Istanbul University
UniversityIstanbul, Türkiye
Research output, citation impact, and the most-cited recent papers from Istanbul University (Türkiye). Aggregated across the NobleBlocks index of 300M+ scholarly works.
Top-cited papers from Istanbul University
Background: in 2010, the European Working Group on Sarcopenia in Older People (EWGSOP) published a sarcopenia definition that aimed to foster advances in identifying and caring for people with sarcopenia. In early 2018, the Working Group met again (EWGSOP2) to update the original definition in order to reflect scientific and clinical evidence that has built over the last decade. This paper presents our updated findings. Objectives: to increase consistency of research design, clinical diagnoses and ultimately, care for people with sarcopenia. Recommendations: sarcopenia is a muscle disease (muscle failure) rooted in adverse muscle changes that accrue across a lifetime; sarcopenia is common among adults of older age but can also occur earlier in life. In this updated consensus paper on sarcopenia, EWGSOP2: (1) focuses on low muscle strength as a key characteristic of sarcopenia, uses detection of low muscle quantity and quality to confirm the sarcopenia diagnosis, and identifies poor physical performance as indicative of severe sarcopenia; (2) updates the clinical algorithm that can be used for sarcopenia case-finding, diagnosis and confirmation, and severity determination and (3) provides clear cut-off points for measurements of variables that identify and characterise sarcopenia. Conclusions: EWGSOP2's updated recommendations aim to increase awareness of sarcopenia and its risk. With these new recommendations, EWGSOP2 calls for healthcare professionals who treat patients at risk for sarcopenia to take actions that will promote early detection and treatment. We also encourage more research in the field of sarcopenia in order to prevent or delay adverse health outcomes that incur a heavy burden for patients and healthcare systems.
The last decade has seen a sharp increase in the number of scientific publications describing physiological and pathological functions of extracellular vesicles (EVs), a collective term covering various subtypes of cell-released, membranous structures, called exosomes, microvesicles, microparticles, ectosomes, oncosomes, apoptotic bodies, and many other names. However, specific issues arise when working with these entities, whose size and amount often make them difficult to obtain as relatively pure preparations, and to characterize properly. The International Society for Extracellular Vesicles (ISEV) proposed Minimal Information for Studies of Extracellular Vesicles ("MISEV") guidelines for the field in 2014. We now update these "MISEV2014" guidelines based on evolution of the collective knowledge in the last four years. An important point to consider is that ascribing a specific function to EVs in general, or to subtypes of EVs, requires reporting of specific information beyond mere description of function in a crude, potentially contaminated, and heterogeneous preparation. For example, claims that exosomes are endowed with exquisite and specific activities remain difficult to support experimentally, given our still limited knowledge of their specific molecular machineries of biogenesis and release, as compared with other biophysically similar EVs. The MISEV2018 guidelines include tables and outlines of suggested protocols and steps to follow to document specific EV-associated functional activities. Finally, a checklist is provided with summaries of key points.
The dementia with Lewy bodies (DLB) Consortium has revised criteria for the clinical and pathologic diagnosis of DLB incorporating new information about the core clinical features and suggesting improved methods to assess them. REM sleep behavior disorder, severe neuroleptic sensitivity, and reduced striatal dopamine transporter activity on functional neuroimaging are given greater diagnostic weighting as features suggestive of a DLB diagnosis. The 1-year rule distinguishing between DLB and Parkinson disease with dementia may be difficult to apply in clinical settings and in such cases the term most appropriate to each individual patient should be used. Generic terms such as Lewy body (LB) disease are often helpful. The authors propose a new scheme for the pathologic assessment of LBs and Lewy neurites (LN) using alpha-synuclein immunohistochemistry and semiquantitative grading of lesion density, with the pattern of regional involvement being more important than total LB count. The new criteria take into account both Lewy-related and Alzheimer disease (AD)-type pathology to allocate a probability that these are associated with the clinical DLB syndrome. Finally, the authors suggest patient management guidelines including the need for accurate diagnosis, a target symptom approach, and use of appropriate outcome measures. There is limited evidence about specific interventions but available data suggest only a partial response of motor symptoms to levodopa: severe sensitivity to typical and atypical antipsychotics in approximately 50%, and improvements in attention, visual hallucinations, and sleep disorders with cholinesterase inhibitors.
Obesity is a chronic metabolic disease characterised by an increase of body fat stores. It is a gateway to ill health, and it has become one of the leading causes of disability and death, affecting not only adults but also children and adolescents worldwide. In clinical practice, the body fatness is estimated by BMI, and the accumulation of intra-abdominal fat (marker for higher metabolic and cardiovascular disease risk) can be assessed by waist circumference. Complex interactions between biological, behavioural, social and environmental factors are involved in regulation of energy balance and fat stores. A comprehensive history, physical examination and laboratory assessment relevant to the patient's obesity should be obtained. Appropriate goals of weight management emphasise realistic weight loss to achieve a reduction in health risks and should include promotion of weight loss, maintenance and prevention of weight regain. Management of co-morbidities and improving quality of life of obese patients are also included in treatment aims. Balanced hypocaloric diets result in clinically meaningful weight loss regardless of which macronutrients they emphasise. Aerobic training is the optimal mode of exercise for reducing fat mass while a programme including resistance training is needed for increasing lean mass in middle-aged and overweight/obese individuals. Cognitive behavioural therapy directly addresses behaviours that require change for successful weight loss and weight loss maintenance. Pharmacotherapy can help patients to maintain compliance and ameliorate obesity-related health risks. Surgery is the most effective treatment for morbid obesity in terms of long-term weight loss. A comprehensive obesity management can only be accomplished by a multidisciplinary obesity management team. We conclude that physicians have a responsibility to recognise obesity as a disease and help obese patients with appropriate prevention and treatment. Treatment should be based on good clinical care, and evidence-based interventions; should focus on realistic goals and lifelong multidisciplinary management.
OBJECTIVE: The 1980 American College of Rheumatology (ACR) classification criteria for systemic sclerosis (SSc) lack sensitivity for early SSc and limited cutaneous SSc. The present work, by a joint committee of the ACR and the European League Against Rheumatism (EULAR), was undertaken for the purpose of developing new classification criteria for SSc. METHODS: Using consensus methods, 23 candidate items were arranged in a multicriteria additive point system with a threshold to classify cases as SSc. The classification system was reduced by clustering items and simplifying weights. The system was tested by 1) determining specificity and sensitivity in SSc cases and controls with scleroderma-like disorders, and 2) validating against the combined view of a group of experts on a set of cases with or without SSc. RESULTS: It was determined that skin thickening of the fingers extending proximal to the metacarpophalangeal joints is sufficient for the patient to be classified as having SSc; if that is not present, 7 additive items apply, with varying weights for each: skin thickening of the fingers, fingertip lesions, telangiectasia, abnormal nailfold capillaries, interstitial lung disease or pulmonary arterial hypertension, Raynaud's phenomenon, and SSc-related autoantibodies. Sensitivity and specificity in the validation sample were, respectively, 0.91 and 0.92 for the new classification criteria and 0.75 and 0.72 for the 1980 ACR classification criteria. All selected cases were classified in accordance with consensus-based expert opinion. All cases classified as SSc according to the 1980 ACR criteria were classified as SSc with the new criteria, and several additional cases were now considered to be SSc. CONCLUSION: The ACR/EULAR classification criteria for SSc performed better than the 1980 ACR criteria for SSc and should allow for more patients to be classified correctly as having the disease.
Dementia has been increasingly more recognized to be a common feature in patients with Parkinson's disease (PD), especially in old age. Specific criteria for the clinical diagnosis of dementia associated with PD (PD-D), however, have been lacking. A Task Force, organized by the Movement Disorder Study, was charged with the development of clinical diagnostic criteria for PD-D. The Task Force members were assigned to sub-committees and performed a systematic review of the literature, based on pre-defined selection criteria, in order to identify the epidemiological, clinical, auxillary, and pathological features of PD-D. Clinical diagnostic criteria were then developed based on these findings and group consensus. The incidence of dementia in PD is increased up to six times, point-prevelance is close to 30%, older age and akinetic-rigid form are associated with higher risk. PD-D is characterized by impairment in attention, memory, executive and visuo-spatial functions, behavioral symptoms such as affective changes, hallucinations, and apathy are frequent. There are no specific ancillary investigations for the diagnosis; the main pathological correlate is Lewy body-type degeneration in cerebral cortex and limbic structures. Based on the characteristic features associated with this condition, clinical diagnostic criteria for probable and possible PD-D are proposed.
BACKGROUND: Patisiran, an investigational RNA interference therapeutic agent, specifically inhibits hepatic synthesis of transthyretin. METHODS: In this phase 3 trial, we randomly assigned patients with hereditary transthyretin amyloidosis with polyneuropathy, in a 2:1 ratio, to receive intravenous patisiran (0.3 mg per kilogram of body weight) or placebo once every 3 weeks. The primary end point was the change from baseline in the modified Neuropathy Impairment Score+7 (mNIS+7; range, 0 to 304, with higher scores indicating more impairment) at 18 months. Other assessments included the Norfolk Quality of Life-Diabetic Neuropathy (Norfolk QOL-DN) questionnaire (range, -4 to 136, with higher scores indicating worse quality of life), 10-m walk test (with gait speed measured in meters per second), and modified body-mass index (modified BMI, defined as [weight in kilograms divided by square of height in meters]×albumin level in grams per liter; lower values indicated worse nutritional status). RESULTS: A total of 225 patients underwent randomization (148 to the patisiran group and 77 to the placebo group). The mean (±SD) mNIS+7 at baseline was 80.9±41.5 in the patisiran group and 74.6±37.0 in the placebo group; the least-squares mean (±SE) change from baseline was -6.0±1.7 versus 28.0±2.6 (difference, -34.0 points; P<0.001) at 18 months. The mean (±SD) baseline Norfolk QOL-DN score was 59.6±28.2 in the patisiran group and 55.5±24.3 in the placebo group; the least-squares mean (±SE) change from baseline was -6.7±1.8 versus 14.4±2.7 (difference, -21.1 points; P<0.001) at 18 months. Patisiran also showed an effect on gait speed and modified BMI. At 18 months, the least-squares mean change from baseline in gait speed was 0.08±0.02 m per second with patisiran versus -0.24±0.04 m per second with placebo (difference, 0.31 m per second; P<0.001), and the least-squares mean change from baseline in the modified BMI was -3.7±9.6 versus -119.4±14.5 (difference, 115.7; P<0.001). Approximately 20% of the patients who received patisiran and 10% of those who received placebo had mild or moderate infusion-related reactions; the overall incidence and types of adverse events were similar in the two groups. CONCLUSIONS: In this trial, patisiran improved multiple clinical manifestations of hereditary transthyretin amyloidosis. (Funded by Alnylam Pharmaceuticals; APOLLO ClinicalTrials.gov number, NCT01960348 .).
The chemical diversity of antioxidants makes it difficult to separate and quantify antioxidants from the vegetable matrix. Therefore, it is desirable to establish a method that can measure the total antioxidant activity level directly from vegetable extracts. The current literature clearly states that there is no "total antioxidant" as a nutritional index available for food labeling because of the lack of standard quantitation methods. Thus, this work reports the development of a simple, widely applicable antioxidant capacity index for dietary polyphenols and vitamins C and E, utilizing the copper(II)-neocuproine [Cu(II)-Nc] reagent as the chromogenic oxidizing agent. Because the copper(II) (or cupric) ion reducing ability of polyphenols is measured, the method is named by our research group "cupric reducing antioxidant capacity" abbreviated as the CUPRAC method. This method should be advantageous over the ferric reducing antioxidant power (FRAP) method because the redox chemistry of copper(II)-as opposed to that of ferric ion-involves faster kinetics. The method comprises mixing of the antioxidant solution (directly or after acid hydrolysis) with a copper(II) chloride solution, a neocuproine alcoholic solution, and an ammonium acetate aqueous buffer at pH 7 and subsequent measurement of the developed absorbance at 450 nm after 30 min. Because the color development is fast for compounds such as ascorbic acid, gallic acid, and quercetin but slow for naringin and naringenin, the latter compounds were assayed after incubation at 50 degrees C on a water bath for 20 min [after Cu(II)-Nc reagent addition] so as to force the oxidation reaction to reach completion. The flavonoid glycosides were hydrolyzed to their corresponding aglycons by refluxing in 1.2 M HCl-containing 50% MeOH so as to exert maximal reducing power toward Cu(II)-Nc. Certain compounds also needed incubation after acid hydrolysis to fully exhibit their reducing capability. The CUPRAC antioxidant capacities of synthetic mixtures of antioxidants were experimentally measured as Trolox equivalents and compared to those theoretically found by making use of the principle of additivity of absorbances assuming no chemical interaction between the mixture constituents. Because ascorbic acid is not resistant to elevated temperature incubation, it should be assayed initially by measuring the absorbance (at 450 nm) difference of original and ascorbate oxidase-added mixture solutions at the end of 1 min of Cu(II)-Nc reagent addition. Thus, the total CUPRAC antioxidant capacity of a mixture containing various antioxidants should be that finally measured after a suitable combination of hydrolysis and incubation procedures, added to the initially measured capacity due to ascorbate. The antioxidant polyphenolic compounds tested demonstrate that the highest capacities in the CUPRAC method were observed for epicatechin gallate, epigallocatechin gallate, quercetin, fisetin, epigallocatechin, catechin, and caffeic acid in this order, in accordance with theoretical expectations, because the number and position of the hydroxyl groups as well as the degree of conjugation of the whole molecule are important. The antioxidant potency of flavonoids is nearly proportional to the total number of -OH groups and is positively affected by the presence of an o-dihydroxy moiety in the B-ring. beta-Carotene, which did not react with the CUPRAC reagent in alcoholic aqueous medium, could be assayed in dichloromethane solvent. Linear calibration curves for ascorbic acid and flavonoids were redrawn in synthetic solutions containing a mixture of antioxidants, and also in real matrices such as grape and orange juices, green tea, and blackberry tea, showing an initial nonzero absorbance with the CUPRAC reagent. The parallellism of the linear calibration curves of pure compounds in a given complex matrix effectively demonstrated that there were no interferent chemical interactions among the solution constituents and that the antioxidant capacities of the tested antioxidants were additive. The CUPRAC reagent is reasonably selective, stable, easily accessible, and sensitive toward thiol-type oxidants, unlike the FRAP method. The reaction is carried out at nearly physiological pH as opposed to the unrealistic acidic pH of FRAP.
Mild cognitive impairment is common in nondemented Parkinson's disease (PD) patients and may be a harbinger of dementia. In view of its importance, the Movement Disorder Society commissioned a task force to delineate diagnostic criteria for mild cognitive impairment in PD. The proposed diagnostic criteria are based on a literature review and expert consensus. This article provides guidelines to characterize the clinical syndrome and methods for its diagnosis. The criteria will require validation, and possibly refinement, as additional research improves our understanding of the epidemiology, presentation, neurobiology, assessment, and long-term course of this clinical syndrome. These diagnostic criteria will support future research efforts to identify at the earliest stage those PD patients at increased risk of progressive cognitive decline and dementia who may benefit from clinical interventions at a predementia stage.
Humans express a wide array of ideal mate preferences. Around the world, people desire romantic partners who are intelligent, healthy, kind, physically attractive, wealthy, and more. In order for these ideal preferences to guide the choice of actual romantic partners, human mating psychology must possess a means to integrate information across these many preference dimensions into summaries of the overall mate value of their potential mates. Here we explore the computational design of this mate preference integration process using a large sample of n = 14,487 people from 45 countries around the world. We combine this large cross-cultural sample with agent-based models to compare eight hypothesized models of human mating markets. Across cultures, people higher in mate value appear to experience greater power of choice on the mating market in that they set higher ideal standards, better fulfill their preferences in choice, and pair with higher mate value partners. Furthermore, we find that this cross-culturally universal pattern of mate choice is most consistent with a Euclidean model of mate preference integration.
PURPOSE: Focal cortical dysplasias (FCD) are localized regions of malformed cerebral cortex and are very frequently associated with epilepsy in both children and adults. A broad spectrum of histopathology has been included in the diagnosis of FCD. An ILAE task force proposes an international consensus classification system to better characterize specific clinicopathological FCD entities. METHODS: Thirty-two Task Force members have reevaluated available data on electroclinical presentation, imaging, neuropathological examination of surgical specimens as well as postsurgical outcome. KEY FINDINGS: The ILAE Task Force proposes a three-tiered classification system. FCD Type I refers to isolated lesions, which present either as radial (FCD Type Ia) or tangential (FCD Type Ib) dyslamination of the neocortex, microscopically identified in one or multiple lobes. FCD Type II is an isolated lesion characterized by cortical dyslamination and dysmorphic neurons without (Type IIa) or with balloon cells (Type IIb). Hence, the major change since a prior classification represents the introduction of FCD Type III, which occurs in combination with hippocampal sclerosis (FCD Type IIIa), or with epilepsy-associated tumors (FCD Type IIIb). FCD Type IIIc is found adjacent to vascular malformations, whereas FCD Type IIId can be diagnosed in association with epileptogenic lesions acquired in early life (i.e., traumatic injury, ischemic injury or encephalitis). SIGNIFICANCE: This three-tiered classification system will be an important basis to evaluate imaging, electroclinical features, and postsurgical seizure control as well as to explore underlying molecular pathomechanisms in FCD.
Abbreviations ACE: angiotensin-converting enzyme; BP: blood pressure; DBP: diastolic blood pressure; eGFR: estimated glomerular filtration rate; ESC: European Society of Cardiology; ESH: European Society of Hypertension; ET: endothelin; IMT: carotid intima-media thickness; JNC: Joint National Committee; LVH: left ventricular hypertrophy; LVM: left ventricular mass; PDE-5: phosphodiesterase-5; PPAR-γ: peroxisome proliferators-activated receptor-γ; PWV: pulse wave velocity; SBP: systolic blood pressure; WHO: World Health Organization. Introduction In the 2 years since the publication of the 2007 guidelines for the management of arterial hypertension of the European Society of Hypertension (ESH) and the European Society of Cardiology (ESC) [1], research on hypertension has actively been pursued and the results of new important studies (including several large randomized trials of antihypertensive therapy) have been published. Some of these studies have reinforced the evidence on which the recommendations of the 2007 ESH/ESC guidelines were based. However, other studies have widened the information available in 2007, modifying some of the previous concepts, and suggesting that new evidence-based recommendations could be appropriate. The aim of this document of the ESH is to address a number of studies on hypertension published in the last 2 years in order to assess their contribution to our expanding knowledge of hypertension. Furthermore, some critical appraisal of the current recommendations of the ESH/ESC, as well as of other guidelines, might be a useful step toward the preparation of a third version of the European guidelines in the future. The most important conclusions are summarized in boxes. The points that will be discussed are reported in Box 1.Box. 1Assessment of subclinical organ damage for stratification of total cardiovascular risk The 2007 ESH/ESC guidelines recommend total cardiovascular risk be evaluated in each patient to decide about important aspects of treatment: the blood pressure (BP) threshold at which to commence drug administration, the target BP to be reached by treatment, the use of two-drug combinations as the initial treatment step, and the possible addition to the antihypertensive treatment regimen of lipid-lowering and antiplatelet agents [1]. Among the criteria to assess total cardiovascular risk, the European guidelines consider subclinical organ damage to be a very important component, because asymptomatic alterations of the cardiovascular system and the kidney are crucial intermediate stages in the disease continuum that links risk factors such as hypertension to cardiovascular events and death. On the basis of a number of criteria (prognostic importance, prevalence in the population, availability and cost of the assessment procedures, etc.), the 2007 European guidelines considered detection of organ damage as important for the diagnostic and prognostic evaluation of hypertensive patients. They further subdivided the different types of organ damage into (1) those that can be identified by relatively simple and cheap procedures [electrocardiogram, serum creatinine, estimated glomerular filtration rate (eGFR), and measurement of urinary protein excretion in order to detect microalbuminuria or proteinuria], which were thus regarded as suitable for routine search in the whole hypertensive population, and (2) those that require more complex procedures or instrumentations (echocardiogram, carotid ultrasonography, pulse wave velocity), which were for this reason only recommended for a more in-depth characterization of the hypertensive patient. Since then, other studies have added useful information on the importance of detecting subclinical organ damage in the hypertensive population, strengthening the recommendation to use the most easily available and the least costly procedures in the routine examination of individuals with hypertension. Heart A few recent papers have revived interest in the power of the electrocardiogram to predict the risk of cardiovascular events. In a prospective survey including 7495 American adults, a new indicator of left ventricular hypertrophy (LVH), the Novacode estimate of left ventricular mass index that is based on both voltage and strain pattern criteria, has been reported to be significantly related to 10-year cardiovascular mortality [2]. The relation remained significant after adjusting for age, SBP, smoking, cholesterol, and diabetes. Furthermore, in the LIFE trial, the investigators have reported that in hypertensive patients with electrocardiographic LVH, left bundle branch block identifies individuals at increased risk of cardiovascular mortality (hazard ratio 1.6), sudden cardiovascular death (hazard ratio 3.5), and hospitalization for heart failure (hazard ratio 1.7) [3]. Finally, a very recent prospective study [4] focused on the R-wave voltage in lead aVL as being rather closely associated with left ventricular mass (LVM), and additionally predictive of incident cardiovascular events even when hypertension is not accompanied by electrocardiographic LVH (9% higher risk for each 0.1 mV higher R-wave). Additional evidence is also available on the predictive power of cardiac abnormalities, as detected by echocardiography, an approach of continuing interest because of its ability to more directly and precisely quantify LVM and geometric LVH patterns. A retrospective study has recently updated information from more than 35 000 normotensive and hypertensive participants with normal left ventricular ejection fraction [5]. Despite normal left ventricular function, an abnormal left ventricular geometric pattern was found in 46% of the patients (35% left ventricular concentric remodeling and 11% LVH), and the associated risk of all-cause mortality was twice as large as that of patients with normal left ventricular geometry. Although in another study on an African–American population, the relationship between left ventricular geometric patterns and all-cause mortality was markedly attenuated after adjusting for baseline variables, and remained significant only in men [6], the increased risk associated with LVH has been confirmed by other observations. In a prospective study on a cohort of 1652 Greek hypertensive patients followed up for 6 years, echocardiographic LVH was significantly associated with either a composite of all-cause mortality and cardiovascular events (hazard ratio 1.53) and with stroke (hazard ratio 2.01), after adjustment for major cardiovascular risk factors [7]. Furthermore, a retrospective analysis of 1447 Japanese hypertensive patients who participated in the CASE-J trial showed that cardiovascular events occurred about 2.6 times more frequently in patients with a LVM index 125 g/m2 or more compared with those with a LVM index below this value [8]. Finally, in the PAMELA population, echocardiographic LVH was associated with a four-fold to five-fold significant increase in cardiovascular morbidity and mortality when data were adjusted for a large number of potential confounders, including office, home, and ambulatory BP values. A 10% increase in LVM increased the risk more markedly when baseline LVM was already abnormal, but an increasing risk was evident also when calculated from LVM values within the normal range [9]. Blood vessels The relationship of carotid intima–media thickness (IMT) and plaques with subsequent cardiovascular events, already discussed in the 2007 guidelines, has been further strengthened by data from ELSA [10], which have shown that baseline carotid IMT predicts cardiovascular events independent of BP (clinic and ambulatory) and this occurs both for the IMT value at the carotid bifurcations and for the IMT value at the level of the common carotid artery. This suggests that both atherosclerosis (reflected by the IMT value at the bifurcations) and vascular hypertrophy (reflected by the common carotid IMT) exert an adverse prognostic effect in addition to that of high BP. An adverse prognostic significance of carotid plaques (hazard ratio 2.3) has also been reported in a sample of residents of the Copenhagen County free of overt cardiovascular disease, which was prospectively followed for about 13 years [11]. Evidence has also accrued on the adverse prognostic value of arterial stiffening. In the Copenhagen County population, an increased pulse wave velocity (PWV >12 m/s) was associated with a 50% increase in the risk of a cardiovascular event [11]. Furthermore, an independent predictive value of PWV for cardiovascular events has been shown in Japanese men followed for 8.2 years [12]. Finally, indirect indices of aortic stiffness and wave reflection, such as central BP and augmentation index, have been confirmed as independent predictors of cardiovascular events in two recent studies [13,14]. In particular, in one of these studies of 1272 normotensive and untreated hypertensive patients, only central SBP consistently and independently predicted cardiovascular mortality after adjustment for various cardiovascular risk factors, including LVM and carotid IMT [14]. However, it should be emphasized that in most available studies, the additive predictive value of central BP beyond brachial pressure appears limited, which leaves the question whether central BP measurements should be regularly considered in the clinical profiling of hypertensive patients in need of further investigation. Kidney Several new data [15] reinforce the already solid evidence on the prognostic value of eGFR that was available at the time of the 2007 guidelines [1]. In the population of Gubbio (Italy), an eGFR in the lowest decile was associated with a significantly higher incidence of cardiovascular events (hazard ratio 2.14) [16], and in the above-mentioned Greek study [7], an eGFR between 15 and 59 ml/min per 1.73 m2 was associated with a 66% increase in the composite endpoint of all cause mortality and cardiovascular events after adjustment for baseline cardiovascular risk and independent of LVH [7]. Likewise, in a post hoc analysis of data from the VALUE trial [17], eGFR according to the MDRD formula was significantly predictive of all outcomes except stroke (with hazard ratios between 1.23 and 1.70 according to the different outcomes) and was more sensitive than calculation of the creatinine clearance value according to the Cockroft–Gault formula, which was only predictive of all-cause mortality. The baseline eGFR by the MDRD formula turned out to be importantly predictive of both renal and cardiovascular events also in the large number (n = 11 140) of type 2 diabetic patients included in the ADVANCE trial, even when data were adjusted for many potential confounders, including the concomitant urinary protein excretion value. For every 50% reduction of baseline eGFR the risk of cardiovascular events significantly increased 2.2-fold, the concomitant increase in the risk of cardiovascular death and renal events being 3.6-fold and 63.6-fold, respectively [18]. New evidence is also available to support the already large amount of data in favor of the prognostic value of the moderate increase in urinary protein excretion, defined as microalbuminuria [19,20]. In two population studies, the Gubbio study [16] and the Copenhagen County study [11], microalbuminuria was confirmed as an important predictor of cardiovascular outcome, the adjusted hazard ratio being, respectively, 2.15-fold and 3.10-fold greater in patients with microalbuminuria compared with those without. In the Gubbio study, the association of microalbuminuria with low eGFR had a multiplicative effect (hazard ratio 5.93). In the ADVANCE trial [18], a change from one clinical stage of albuminuria to the next was associated with a 1.6-fold, 2.0-fold, and 3.3-fold increase in the multivariate-adjusted risk of cardiovascular events, cardiovascular death, and renal events, respectively, this being the case also when the change from normoalbuminuria to microalbuminuria was involved. The effects of higher baseline urinary protein excretion and reduced eGFR were independent of each other and the association of microalbuminuria and an eGFR value less than 60 ml/min per 1.73 m2 brought about an additional increase in risk: 3.2-fold for cardiovascular events, 5.9-fold for cardiovascular mortality, and 22.2-fold for renal events. Additional measures of organ damage The 2007 European guidelines mention a number of additional measures of organ damage for which evidence of prognostic relevance was available, but no use in the clinical practice could be foreseen because of drawbacks of practical relevance, such as the high cost and low availability of the devices involved, the complexity and time consumption inherent in the procedures, and in several instances the lack of standardization of the values obtained between laboratories and across countries. Based on the evidence available in the last 2 years, no addition to the measures of organ damage included in the 2007 guidelines can be supported, although the growing availability of more sophisticated techniques and the reduced cost of their use brought about by technological progress, makes future additions likely. In this context, the use of nuclear magnetic resonance deserves special mention. Although not prospective in nature, a very recent study systematically employing nuclear magnetic resonance imaging in a group of 142 hypertensive patients without overt cardiovascular disease has provided the interesting information that silent cerebrovascular lesions are even more prevalent (44%) than cardiac (21%) and renal (26%) subclinical damage, and do frequently occur in the absence of other signs of organ damage [21]. Increasing evidence also relates these lesions to cognitive dysfunction [22,23], a problem of primary importance because of the senescence of the population [24]. With magnetic resonance imaging becoming more and more frequently employed in diagnostic procedures, silent cerebrovascular disease is likely to become more frequently investigated in prognostic and therapeutic studies in hypertension. The prognostic value of structural alterations in small subcutaneous arteries has recently been confirmed by two independent studies [25,26]. However, the invasive nature of this measurement prevents larger scale application of this method. A new noninvasive method for assessing the media–lumen ratio of small retinal arteries seems promising for large-scale evaluation [27], although its predictive value remains to be investigated. Evidence remains inconclusive on a marker of a vascular alteration that has been actively investigated in the past decade, namely endothelial dysfunction. In a population sample of individuals without overt cardiovascular disease (67% with hypertension and 22% with diabetes mellitus) from the Northern Manhattan study, measures of flow-mediated vasodilatation predicted the incidence of cardiovascular events, but this effect was not independent of traditional cardiovascular risk factors [28]. Likewise, in the large cohort of elderly patients of the Cardiovascular Health Study, flow-mediated vasodilatation added very little to the prognostic accuracy of traditional risk factors [29]. On the contrary, Muiesan et al.[30] have recently reported that in a small cohort (n = 172) of uncomplicated hypertensive persons followed for about 8 years, flow-mediated vasodilatation of the brachial artery below the median value was significantly associated with a 2.7-fold increase in incident cardiovascular events even after adjusting for all major cardiovascular risk factors. However, the same group of investigators also have reported that endothelial dysfunction in the subcutaneous vessels of hypertensive patients was not predictive of cardiovascular events [31], possibly because endothelial dysfunction in different vascular beds may have a different prognostic significance. Clearly, the prognostic value of endothelial dysfunction in hypertension remains to be further elucidated. It should be emphasized that the addition of new measures of organ damage to the assessment of total cardiovascular risk requires not only the demonstration of their prognostic importance, but it has to improve the power to predict the incidence of cardiovascular events. This is by no means easy to be documented, and indeed data are available that in some instances new risk factors of individual prognostic significance do not improve, when added to the others, the accuracy by which cardiovascular risk can be quantified, thus only making the diagnostic procedures more complex, time consuming, and costly. This is exemplified by the recent results of the Framingham study, which showed that inclusion of inflammatory markers did not lead to any substantial improvement in the accuracy (sensitivity and specificity) by which total cardiovascular risk was assessed [32]. Subclinical organ damage as a marker of high cardiovascular risk Although subclinical organ damage undoubtedly increases the level of cardiovascular risk, the question arises whether it always brings the patient into the high-risk category, that is, an absolute risk of at least 20 cardiovascular events in 10 years per 100 patients. The 2007 European guidelines classify hypertensive patients with subclinical organ damage among those with a high total cardiovascular risk. This is further supported by more recent evidence on the contribution of subclinical cardiac, vascular, and renal damage to the total cardiovascular risk. As regards to subclinical cardiac damage, analysis of the data provided by some of the major prospective studies indicates that in hypertensive patients, echocardiographic LVH, particularly if of the concentric variety, is associated with an incidence of cardiovascular events equal to or above 20% in 10 years [5,7,33]. An incidence greater than 20% in 10 years has also been reported for men, but not for women, with echocardiographic LVH in the Framingham population study [34]. Finally, in the hypertensive patients of the CASE-J trial, echocardiographic LVH was associated with a 10-year incidence of cardiovascular events of 24% compared with the 10% incidence seen in patients without LVH [8]. Similar evidence exists for vascular damage. In the elderly patients of the Cardiovascular Health Study [35], the 10-year incidence of major cardiovascular events was higher than 20% when the common carotid IMT was 1.06 mm or more (fourth and fifth quintiles) and below 10% in those with an IMT in the first quintile (<0.87 mm). In the hypertensive patients of the ELSA study [10], the incidence of all (major and minor) cardiovascular events was greater than 20% in 10 years when IMT (common carotid plus bifurcation) was in the third and fourth quartiles (≥1.16 mm) or when at least one plaque had been detected. In contrast, patients with IMT in the first or the smallest IMT quartile (<0.98 mm) had incident cardiovascular events below 10% in 10 years. In hypertensive patients, the 10-year incidence of major cardiovascular events was higher than 20% when carotid-femoral PWV (aortic stiffness) was 16.3 m/s or more (fifth quintile) and below 10% in those with an aortic stiffness in the first and second quintiles [36]. Furthermore, even asymptomatic peripheral vascular disease as detected by a positive ankle-brachial index has prospectively been found to be associated in men with an incidence of cardiovascular events approaching 20% in 10 years [37,38]. Finally, old and recent evidence leaves little doubt that in hypertensive individuals, renal subclinical organ damage is associated with a 10-year risk of cardiovascular events of 20% or more. It has already been reported some years ago that reduced renal function, defined by a serum creatinine more than 1.5 mg/dl is associated with a 10-year incidence of cardiovascular events 20% or more [39,40]. In the recent prospective cohort of Greek hypertensive patients [7], a low eGFR was associated with incident cardiovascular events of about 20% in 10 years, an even higher incidence being observed when low eGFR occurred together with LVH. Furthermore, in the hypertensive patients prospectively studied by Jensen et al.[41], the incidence of ischemic heart disease was 20% in 10 years in the presence of microalbuminuria and of only 5% in its absence. Also, in the Gubbio population study, the incidence of cardiovascular events was greater than 20% in 10 years, but only in those individuals in whom microalbuminuria in the highest decile was associated with eGFR in the lowest decile [16]. Over 78% of these patients had hypertension. The 2007 European guidelines classify patients with subclinical organ damage as being at high risk also when BP is in the high normal range, but admittedly evidence that this is invariably the case is less clear. In the general population of the Framingham study, no information was made available on the prognostic value of echographic LVH, separately in the normotensive and hypertensive population [34]. Furthermore, in the same population, the association of renal dysfunction with cardiovascular events was lost after adjustment for cardiovascular risk factors, including BP [42]. In the PREVEND population study [43], microalbuminuria (20–200 mg/l) was associated with only a 4.7% cardiovascular mortality in 10 years, that is, a moderate absolute risk according to the SCORE classification [44], and in the nonhypertensive, nondiabetic individuals of the Framingham study, a microalbuminuria above the median value was associated with a rate of incident cardiovascular events of only 8.8% in 10 years compared with a 2.9% rate in individuals with microalbuminuria below the median value [45]. Prognostic value of treatment-induced modifications of subclinical organ damage The 2007 European guidelines have emphasized that treatment-induced changes of organ damage affect the incidence of cardiovascular events, thereby recommending that organ damage be measured also during treatment. Reference was made to the data obtained in the LIFE study [46], in which hypertensive patients in whom treatment was accompanied by regression of echocardiographic LVH or a delayed increase in LVM had less incident cardiovascular events, including sudden death, than those in whom no regression from or earlier progression to LVH occurred. It was also mentioned that both in LIFE [47] and in other studies [48], a similar relationship was found between treatment-induced changes in and renal or cardiovascular events. This means compared with patients in whom treatment had little or no reduction in was associated with a reduced incidence of cardiovascular events and less progression to renal Since 2007, data on the relationship between treatment-induced changes in cardiac damage and cardiovascular have been by further of the LIFE study, which have shown that also treatment-induced changes in left left ventricular and in electrocardiographic signs of LVH with incident cardiovascular event rate Furthermore, have been that in changes in LVM during treatment affect cardiovascular Finally, the predictive power of treatment-induced IMT changes in the carotid arteries has for the first time been investigated in a recent analysis of ELSA trial This analysis to a predictive of IMT but the of these changes compared with the large individual in baseline IMT makes it to conclusions The of treatment-induced changes in with cardiovascular event incidence has been by some of the In this trial on a large number of high or very high cardiovascular risk patients, the group with a of an angiotensin-converting and an the study less increase in than the group on with one or the other but this effect was not accompanied by a reduction in cardiovascular events and was even associated with an increase in renal events However, these results do not the important that treatment-induced changes in can be a marker of the more or less effects of treatment because for the results are For in most patients had a normal renal and few overt which in a very number of the endpoint that for renal that is, renal Furthermore, in the very high cardiovascular risk population the of the system provided by the and might have an adverse effect of its that and the associated with a reduction in In favor of this are some recent of the ADVANCE study in patients with type 2 diabetes. In these patients, values of showed a independent association with both renal and cardiovascular events, the contribution of being to the concomitant values of eGFR [18]. Evidence on the important prognostic of subclinical organ damage to In both hypertensive patients and the general population, the presence of electrocardiographic and echocardiographic LVH, a carotid plaque or an increased arterial a reduced eGFR by the MDRD or microalbuminuria or increases the total cardiovascular risk, hypertensive patients into the high absolute risk The changes in or detected LVH by treatment the effects on cardiovascular events, thereby information on whether patients are more or less by the treatment Despite some recent results solid evidence suggests that this is the case also for treatment-induced changes in urinary protein excretion, although the problem remains for treatment-induced vascular assessing the presence of subclinical organ damage is of crucial importance in the hypertensive This assessment can use of simple and cheap procedures that can routine information and at various times during treatment. It can also on more sophisticated that can further cardiac and vascular In all organ damage assessment is useful because of the evidence that in the presence of two signs of organ damage when inherent to the same cardiovascular risk may be more markedly with an to the high cardiovascular risk It is not from published data whether subclinical organ damage can total cardiovascular risk to the high range also in patients with high normal BP. However, organ damage when it is particularly or or is accompanied by risk factors, is associated with a or increase in risk also in normotensive individuals and the 2007 guidelines recommend risk as a for the need of treatment in and patients. In this context, it is also important to that the of organ damage in patients that decide to the of several studies that the incidence of cardiovascular events is higher in than in untreated hypertensive patients even after adjustment for cardiovascular risk factors and past clinical This is with the that antihypertensive treatment even if a high total risk to a the that in treatment is organ damage when is not use of organ damage assessment may thus to a more about the of treatment and thus favor its greater Some of the discussed in of subclinical organ damage for stratification of total cardiovascular risk are summarized in Box approach guidelines on the management of hypertension recommend the of antihypertensive in all patients with a SBP or more a or and to the treatment in order for the patients to be below these values. They further recommend drug treatment to be within a BP range, that is, a SBP between and and a between and in patients with diabetes or a of cardiovascular or renal disease, at values The 2007 ESH/ESC guidelines have accompanied these recommendations with information on the evidence are based and a critical of this has recently been by of the in the of further information provided by recent The of the ESH document is to the and the type of evidence on which these recommendations are and thus the and
Protein coding genes constitute only approximately 1% of the human genome but harbor 85% of the mutations with large effects on disease-related traits. Therefore, efficient strategies for selectively sequencing complete coding regions (i.e., "whole exome") have the potential to contribute to the understanding of rare and common human diseases. Here we report a method for whole-exome sequencing coupling Roche/NimbleGen whole exome arrays to the Illumina DNA sequencing platform. We demonstrate the ability to capture approximately 95% of the targeted coding sequences with high sensitivity and specificity for detection of homozygous and heterozygous variants. We illustrate the utility of this approach by making an unanticipated genetic diagnosis of congenital chloride diarrhea in a patient referred with a suspected diagnosis of Bartter syndrome, a renal salt-wasting disease. The molecular diagnosis was based on the finding of a homozygous missense D652N mutation at a position in SLC26A3 (the known congenital chloride diarrhea locus) that is virtually completely conserved in orthologues and paralogues from invertebrates to humans, and clinical follow-up confirmed the diagnosis. To our knowledge, whole-exome (or genome) sequencing has not previously been used to make a genetic diagnosis. Five additional patients suspected to have Bartter syndrome but who did not have mutations in known genes for this disease had homozygous deleterious mutations in SLC26A3. These results demonstrate the clinical utility of whole-exome sequencing and have implications for disease gene discovery and clinical diagnosis.
CONTEXT: Despite evidence of efficacy of antihypertensive agents in treating hypertensive patients, safety and efficacy of antihypertensive agents for coronary artery disease (CAD) have been discerned only from subgroup analyses in large trials. OBJECTIVE: To compare mortality and morbidity outcomes in patients with hypertension and CAD treated with a calcium antagonist strategy (CAS) or a non-calcium antagonist strategy (NCAS). DESIGN, SETTING, AND PARTICIPANTS: Randomized, open label, blinded end point study of 22 576 hypertensive CAD patients aged 50 years or older, which was conducted September 1997 to February 2003 at 862 sites in 14 countries. INTERVENTIONS: Patients were randomly assigned to either CAS (verapamil sustained release) or NCAS (atenolol). Strategies specified dose and additional drug regimens. Trandolapril and/or hydrochlorothiazide was administered to achieve blood pressure goals according to guidelines from the sixth report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC VI) of less than 140 mm Hg (systolic) and less than 90 mm Hg (diastolic); and less than 130 mm Hg (systolic) and less than 85 mm Hg (diastolic) if diabetes or renal impairment was present. Trandolapril was also recommended for patients with heart failure, diabetes, or renal impairment. MAIN OUTCOME MEASURES: Primary: first occurrence of death (all cause), nonfatal myocardial infarction, or nonfatal stroke; other: cardiovascular death, angina, adverse experiences, hospitalizations, and blood pressure control at 24 months. RESULTS: At 24 months, in the CAS group, 6391 patients (81.5%) were taking verapamil sustained release; 4934 (62.9%) were taking trandolapril; and 3430 (43.7%) were taking hydrochlorothiazide. In the NCAS group, 6083 patients (77.5%) were taking atenolol; 4733 (60.3%) were taking hydrochlorothiazide; and 4113 (52.4%) were taking trandolapril. After a follow-up of 61 835 patient-years (mean, 2.7 years per patient), 2269 patients had a primary outcome event with no statistically significant difference between treatment strategies (9.93% in CAS and 10.17% in NCAS; relative risk [RR], 0.98; 95% confidence interval [CI], 0.90-1.06). Two-year blood pressure control was similar between groups. The JNC VI blood pressure goals were achieved by 65.0% (systolic) and 88.5% (diastolic) of CAS and 64.0% (systolic) and 88.1% (diastolic) of NCAS patients. A total of 71.7% of CAS and 70.7% of NCAS patients achieved a systolic blood pressure of less than 140 mm Hg and diastolic blood pressure of less than 90 mm Hg. CONCLUSION: The verapamil-trandolapril-based strategy was as clinically effective as the atenolol-hydrochlorothiazide-based strategy in hypertensive CAD patients.
MyD88 is a key downstream adapter for most Toll-like receptors (TLRs) and interleukin-1 receptors (IL-1Rs). MyD88 deficiency in mice leads to susceptibility to a broad range of pathogens in experimental settings of infection. We describe a distinct situation in a natural setting of human infection. Nine children with autosomal recessive MyD88 deficiency suffered from life-threatening, often recurrent pyogenic bacterial infections, including invasive pneumococcal disease. However, these patients were otherwise healthy, with normal resistance to other microbes. Their clinical status improved with age, but not due to any cellular leakiness in MyD88 deficiency. The MyD88-dependent TLRs and IL-1Rs are therefore essential for protective immunity to a small number of pyogenic bacteria, but redundant for host defense to most natural infections.
BACKGROUND: Cholinergic deficits are prominent in patients who have dementia associated with Parkinson's disease. We investigated the effects of the dual cholinesterase inhibitor rivastigmine in such patients. METHODS: Patients in whom mild-to-moderate dementia developed at least 2 years after they received a clinical diagnosis of Parkinson's disease were randomly assigned to receive placebo or 3 to 12 mg of rivastigmine per day for 24 weeks. Primary efficacy variables were the scores for the cognitive subscale of the Alzheimer's Disease Assessment Scale (ADAS-cog) and Alzheimer's Disease Cooperative Study-Clinician's Global Impression of Change (ADCS-CGIC). Secondary clinical outcomes were the scores for the Alzheimer's Disease Cooperative Study-Activities of Daily Living, the 10-item Neuropsychiatric Inventory, the Mini-Mental State Examination, Cognitive Drug Research power of attention tests, the Verbal Fluency test, and the Ten Point Clock-Drawing test. RESULTS: A total of 541 patients were enrolled, and 410 completed the study. The outcomes were better among patients treated with rivastigmine than among those who received placebo; however, the differences between these two groups were moderate and similar to those reported in trials of rivastigmine for Alzheimer's disease. Rivastigmine-treated patients had a mean improvement of 2.1 points in the score for the 70-point ADAS-cog, from a baseline score of 23.8, as compared with a 0.7-point worsening in the placebo group, from a baseline score of 24.3 (P<0.001). Clinically meaningful improvements in the scores for the ADCS-CGIC were observed in 19.8 percent of patients in the rivastigmine group and 14.5 percent of those in the placebo group, and clinically meaningful worsening was observed in 13.0 percent and 23.1 percent, respectively (mean score at 24 weeks, 3.8 and 4.3, respectively; P=0.007). Significantly better outcomes were seen with rivastigmine with respect to all secondary efficacy variables. The most frequent adverse events were nausea (affecting 29.0 percent of patients in the rivastigmine group and 11.2 percent of those in the placebo group, P<0.001), vomiting (16.6 and 1.7 percent, P<0.001), and tremor (10.2 and 3.9 percent, P=0.01). CONCLUSIONS: In this placebo-controlled study, rivastigmine was associated with moderate improvements in dementia associated with Parkinson's disease but also with higher rates of nausea, vomiting, and tremor.
It would be desirable to establish and standardize methods that can measure the total antioxidant capacity level directly from vegetable extracts containing phenolics. Antioxidant capacity assays may be broadly classified as electron transfer (ET)- and hydrogen atom transfer (HAT)-based assays. The majority of HAT assays are kinetics-based, and involve a competitive reaction scheme in which antioxidant and substrate compete for peroxyl radicals thermally generated through the decomposition of azo compounds. ET-based assays measure the capacity of an antioxidant in the reduction of an oxidant, which changes colour when reduced. ET assays include the ABTS/TEAC, CUPRAC, DPPH, Folin-Ciocalteu and FRAP methods, each using different chromogenic redox reagents with different standard potentials. This review intends to offer a critical evaluation of existing antioxidant assays applied to phenolics, and reports the development by our research group of a simple and low-cost antioxidant capacity assay for dietary polyphenols, vitamins C and E, and human serum antioxidants, utilizing the copper(II)-neocuproine reagent as the chromogenic oxidizing agent, which we haved named the CUPRAC (cupric ion reducing antioxidant capacity) method. This method offers distinct advantages over other ET-based assays, namely the selection of working pH at physiological pH (as opposed to the Folin and FRAP methods, which work at alkaline and acidic pHs, respectively), applicability to both hydrophilic and lipophilic antioxidants (unlike Folin and DPPH), completion of the redox reactions for most common flavonoids (unlike FRAP), selective oxidation of antioxidant compounds without affecting sugars and citric acid commonly contained in foodstuffs and the capability to assay -SH bearing antioxidants (unlike FRAP). Other similar ET-based antioxidant assays that we have developed or modified for phenolics are the Fe(III)- and Ce(IV)-reducing capacity methods.
This update and revision of the international guideline for urticaria was developed following the methods recommended by Cochrane and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) working group. It is a joint initiative of the Dermatology Section of the European Academy of Allergology and Clinical Immunology (EAACI), the Global Allergy and Asthma European Network (GA²LEN) and its Urticaria and Angioedema Centers of Reference and Excellence (UCAREs and ACAREs), the European Dermatology Forum (EDF; EuroGuiDerm), and the Asia Pacific Association of Allergy, Asthma and Clinical Immunology with the participation of 64 delegates of 50 national and international societies and from 31 countries. The consensus conference was held on 3 December 2020. This guideline was acknowledged and accepted by the European Union of Medical Specialists (UEMS). Urticaria is a frequent, mast cell-driven disease that presents with wheals, angioedema, or both. The lifetime prevalence for acute urticaria is approximately 20%. Chronic spontaneous or inducible urticaria is disabling, impairs quality of life, and affects performance at work and school. This updated version of the international guideline for urticaria covers the definition and classification of urticaria and outlines expert-guided and evidence-based diagnostic and therapeutic approaches for the different subtypes of urticaria.
IMPORTANCE: The prevalence of cardiometabolic multimorbidity is increasing. OBJECTIVE: To estimate reductions in life expectancy associated with cardiometabolic multimorbidity. DESIGN, SETTING, AND PARTICIPANTS: Age- and sex-adjusted mortality rates and hazard ratios (HRs) were calculated using individual participant data from the Emerging Risk Factors Collaboration (689,300 participants; 91 cohorts; years of baseline surveys: 1960-2007; latest mortality follow-up: April 2013; 128,843 deaths). The HRs from the Emerging Risk Factors Collaboration were compared with those from the UK Biobank (499,808 participants; years of baseline surveys: 2006-2010; latest mortality follow-up: November 2013; 7995 deaths). Cumulative survival was estimated by applying calculated age-specific HRs for mortality to contemporary US age-specific death rates. EXPOSURES: A history of 2 or more of the following: diabetes mellitus, stroke, myocardial infarction (MI). MAIN OUTCOMES AND MEASURES: All-cause mortality and estimated reductions in life expectancy. RESULTS: In participants in the Emerging Risk Factors Collaboration without a history of diabetes, stroke, or MI at baseline (reference group), the all-cause mortality rate adjusted to the age of 60 years was 6.8 per 1000 person-years. Mortality rates per 1000 person-years were 15.6 in participants with a history of diabetes, 16.1 in those with stroke, 16.8 in those with MI, 32.0 in those with both diabetes and MI, 32.5 in those with both diabetes and stroke, 32.8 in those with both stroke and MI, and 59.5 in those with diabetes, stroke, and MI. Compared with the reference group, the HRs for all-cause mortality were 1.9 (95% CI, 1.8-2.0) in participants with a history of diabetes, 2.1 (95% CI, 2.0-2.2) in those with stroke, 2.0 (95% CI, 1.9-2.2) in those with MI, 3.7 (95% CI, 3.3-4.1) in those with both diabetes and MI, 3.8 (95% CI, 3.5-4.2) in those with both diabetes and stroke, 3.5 (95% CI, 3.1-4.0) in those with both stroke and MI, and 6.9 (95% CI, 5.7-8.3) in those with diabetes, stroke, and MI. The HRs from the Emerging Risk Factors Collaboration were similar to those from the more recently recruited UK Biobank. The HRs were little changed after further adjustment for markers of established intermediate pathways (eg, levels of lipids and blood pressure) and lifestyle factors (eg, smoking, diet). At the age of 60 years, a history of any 2 of these conditions was associated with 12 years of reduced life expectancy and a history of all 3 of these conditions was associated with 15 years of reduced life expectancy. CONCLUSIONS AND RELEVANCE: Mortality associated with a history of diabetes, stroke, or MI was similar for each condition. Because any combination of these conditions was associated with multiplicative mortality risk, life expectancy was substantially lower in people with multimorbidity.
A preceding article described the clinical features of Parkinson's disease dementia (PD-D) and proposed clinical diagnostic criteria for "probable" and "possible" PD-D. The main focus of this article is to operationalize the diagnosis of PD-D and to propose practical guidelines based on a two level process depending upon the clinical scenario and the expertise of the evaluator involved in the assessment. Level I is aimed primarily at the clinician with no particular expertise in neuropsychological methods, but who requires a simple, pragmatic set of tests that are not excessively time-consuming. Level I can be used alone or in concert with Level II, which is more suitable when there is the need to specify the pattern and the severity on the dementia of PD-D for clinical monitoring, research studies or pharmacological trials. Level II tests can also be proposed when the diagnosis of PD-D remains uncertain or equivocal at the end of a Level I evaluation. Given the lack of evidence-based standards for some tests when applied in this clinical context, we have tried to make practical and unambiguous recommendations, based upon the available literature and the collective experience of the Task Force. We accept, however, that further validation of certain tests and modifications in the recommended cut off values will be required through future studies.