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https://www.readbyqxmd.com/read/29786594/-brain-microbleeds-definition-pathophysiology-and-the-consequences
#1
Marek Mazurek, Ewa Papuć, Konrad Rejdak
Brain microbleeds are defined as small, circular hypointense changes in T2-sequensec of brain MRI, well demarcated from the surrounding tissue. They represent the phagocytized products of blood distribution extravasated from pathologically altered vessels. The echo-T2-dependent gradient (GRE) and magnetic susceptibility testing (SWI) sequences are usually used to visualize them. The pathogenesis of microbleeds very complex but angiopathy associated with arterial hypertension and cerebral amyloid angiopathy play a special role...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29767706/associations-between-vigorous-physical-activity-and-chronic-diseases-in-older-adults-a-study-in-13-european-countries
#2
Adilson Marques, Miguel Peralta, Hugo Sarmento, João Martins, Miguel González Valeiro
Background: This study aimed to assess cross-sectional and prospective relationships between vigorous physical activity (VPA) and the risk of major chronic diseases among European older adults. Methods: Participants were 37 524 older adults who responded to the fourth (in 2011) and fifth (in 2013) wave of the SHARE project, from 13 European countries. Participants answered interview questions about the presence of chronic conditions and VPA. The cross-sectional and prospective association between PA and the number of chronic diseases was assessed using logistic regression models...
May 14, 2018: European Journal of Public Health
https://www.readbyqxmd.com/read/29765306/microglial-activation-is-modulated-by-captopril-in-vitro-and-in-vivo-studies
#3
Keren Asraf, Nofar Torika, Ron N Apte, Sigal Fleisher-Berkovich
The renin-angiotensin system (RAS) is an important peripheral system involved in homeostasis modulation, with angiotensin II (Ang II) serving as the main effector hormone. The main enzyme involved in Ang II formation is angiotensin-converting enzyme (ACE). ACE inhibitors (ACEIs) such as captopril (Cap) are predominantly used for the management of hypertension. All of the components of the RAS have also been identified in brain. Centrally located hormones such as Ang II can induce glial inflammation. Moreover, in Alzheimer's disease (AD) models, where glial inflammation occurs and is thought to contribute to the propagation of the disease, increased levels of Ang II and ACE have been detected...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29761569/cognitive-and-functional-progression-in-alzheimer-disease-a-prediction-model-of-latent-classes
#4
Miriam L Haaksma, Amaia Calderón-Larrañaga, Marcel G M Olde Rikkert, René J F Melis, Jeannie-Marie S Leoutsakos
OBJECTIVE: We sought to replicate a previously published prediction model for progression, developed in the Cache County Dementia Progression Study, using a clinical cohort from the National Alzheimer's Coordinating Center. METHODS: We included 1120 incident Alzheimer disease (AD) cases with at least one assessment after diagnosis, originating from 31 AD centres from the United States. Trajectories of the Mini-Mental State Examination (MMSE) and Clinical Dementia Rating sum of boxes (CDR-sb) were modelled jointly over time using parallel-process growth mixture models in order to identify latent classes of trajectories...
May 15, 2018: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/29722330/use-of-curcumin-in-diagnosis-prevention-and-treatment-of-alzheimer-s-disease
#5
REVIEW
Min Chen, Zhi-Yun Du, Xi Zheng, Dong-Li Li, Ren-Ping Zhou, Kun Zhang
This review summarizes and describes the use of curcumin in diagnosis, prevention, and treatment of Alzheimer's disease. For diagnosis of Alzheimer's disease, amyloid-β and highly phosphorylated tau protein are the major biomarkers. Curcumin was developed as an early diagnostic probe based on its natural fluorescence and high binding affinity to amyloid-β. Because of its multi-target effects, curcumin has protective and preventive effects on many chronic diseases such as cerebrovascular disease, hypertension, and hyperlipidemia...
April 2018: Neural Regeneration Research
https://www.readbyqxmd.com/read/29719518/body-mass-index-in-mild-cognitive-impairment-according-to-age-sex-cognitive-intervention-and-hypertension-and-risk-of-progression-to-alzheimer-s-disease
#6
Soo Hyun Joo, Se Hee Yun, Dong Woo Kang, Chang Tae Hahn, Hyun Kook Lim, Chang Uk Lee
Introduction: Mild cognitive impairment (MCI) is a prodromal stage of dementia. The association of body mass index (BMI) and progression to Alzheimer's disease (AD) in MCI subjects according to age, sex, and cognitive intervention remains unknown. We investigated the relationship between BMI and the risk of progression to AD in subjects with MCI, as well as the effect of BMI on progression to AD depending on age, sex, cognitive intervention, and chronic diseases. Methods: Three hundred and eighty-eight MCI subjects were followed for 36...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29718387/investigating-predictors-of-cognitive-decline-using-machine-learning
#7
Ramon Casanova, Santiago Saldana, Michael W Lutz, Brenda L Plassman, Maragatha Kuchibhatla, Kathleen M Hayden
Objectives: Genetic risks for cognitive decline are not modifiable; however their relative importance compared to modifiable factors is unclear. We used machine learning to evaluate modifiable and genetic risk factors for Alzheimer's disease(AD), to predict cognitive decline. Methods: Health and Retirement Study participants, aged 65-90, with DNA and >2 cognitive evaluations, were included (n=7,142). Predictors included age, body mass index, gender, education, APOE ε4, CVD, hypertension, diabetes, stroke, neighborhood socio-economic status(NSES), and AD risk genes...
April 27, 2018: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29710725/prevalence-of-dementia-and-associated-risk-factors-a-population-based-study-in-the-philippines
#8
Jacqueline Dominguez, Ma Fe de Guzman, Macario Reandelar, Thien Kieu Thi Phung
BACKGROUND: The Philippines is experiencing rapid demographic aging and with it, the dementia epidemic. Prevalence of dementia and associated risk factors have not been studied in the Philippines. OBJECTIVES: The study aimed to provide a reliable estimate of dementia prevalence and identify associated risk factors in the Filipino population. METHODS: 1460 participants 60 years and older were randomly selected from the Marikina City's senior registry...
April 25, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29684077/medication-burden-attributable-to-chronic-co-morbid-conditions-in-the-very-old-and-vulnerable
#9
Kelly L Moore, Kanan Patel, W John Boscardin, Michael A Steinman, Christine Ritchie, Janice B Schwartz
OBJECTIVE: Polypharmacy is common in older patients but relationships between polypharmacy and common co-morbid conditions have not been elucidated. Our goal was to determine relationships between daily oral medication use and common co-morbid disease dyads and triads using comprehensive medication and diagnostic data from a national sample of nursing homes (NH). DESIGN: Retrospective, cross-sectional study. SETTING: Nationally representative sample of U...
2018: PloS One
https://www.readbyqxmd.com/read/29669100/the-impact-of-changes-in-population-health-and-mortality-on-future-prevalence-of-alzheimer-s-disease-and-other-dementias-in-the-united-states
#10
Julie M Zissimopoulos, Bryan C Tysinger, Patricia A St Clair, Eileen M Crimmins
Objectives: We assessed potential benefits for older Americans of reducing risk factors associated with dementia. Methods: A dynamic simulation model tracked a national cohort of persons 51 and 52 years of age to project dementia onset and mortality in risk reduction scenarios for diabetes, hypertension, and dementia. Results: We found reducing incidence of diabetes by 50% did not reduce number of years a person ages 51 or 52 lived with dementia and increased the population ages 65 and older in 2040 with dementia by about 115,000...
April 16, 2018: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29660933/medical-comorbidity-in-alzheimer-s-disease-a-nested-case-control-study
#11
Jen-Hung Wang, Ya-Ju Wu, Boon Lead Tee, Raymond Y Lo
BACKGROUND: Little is known about the distribution of medical comorbidities in Alzheimer's disease (AD). OBJECTIVE: We aimed to describe the comorbidity pattern of AD in a nested case-control study. METHODS: Incident AD cases were identified by International Classification of Diseases codes in a random sample of 2 million individuals in Taiwan National Health Insurance program during 2001-2011. We further restricted cases to those treated with AD drugs of approved reimbursement...
April 11, 2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29655397/team-composition-and-chronic-disease-management-within-primary-healthcare-practices-in-eastern-ontario-an-application-of-the-measuring-organizational-attributes-of-primary-health-care-survey
#12
Julia Lukewich, Dana S Edge, Elizabeth VanDenKerkhof, Tyler Williamson, Joan Tranmer
BACKGROUND: Various organizational-level attributes are being implemented in primary healthcare to improve healthcare delivery. There is a need to describe the distribution and nature of these attributes and explore differences across practices.AimThe aim of this study was to better understand organizational attributes of primary care teams, focusing specifically on team composition, nursing roles, and strategies that support chronic disease management. METHODS: We employed a cross-sectional survey design...
April 15, 2018: Primary Health Care Research & Development
https://www.readbyqxmd.com/read/29615961/hypertension-and-diagnosis-of-parkinson-s-disease-a-meta-analysis-of-cohort-studies
#13
Liyan Hou, Qiujuan Li, Liping Jiang, Hongyan Qiu, Chengyan Geng, Jau-Shyong Hong, Huihua Li, Qingshan Wang
Background: Hypertension has been associated with cognitive dysfunction in the general population and patients with Alzheimer's disease (AD). However, there are contradictory data regarding the potential association between hypertension and diagnosis of Parkinson's disease (PD), the second most common neurodegenerative disorder after AD. The purpose of this meta-analysis is to synthesize data from cohort studies to explore the potential association between preexisting hypertension and subsequent PD diagnosis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29615895/hypertension-accelerates-alzheimer-s-disease-related-pathologies-in-pigs-and-3xtg-mice
#14
Yao-Hsiang Shih, Shih-Ying Wu, Megan Yu, Sheng-Huai Huang, Chu-Wan Lee, Meei-Jyh Jiang, Pao-Yen Lin, Ting-Ting Yang, Yu-Min Kuo
Epidemiological studies suggest there is an association between midlife hypertension and increased risk of late-life Alzheimer's disease (AD). However, whether hypertension accelerates the onset of AD or is a distinct disease that becomes more prevalent with age (comorbidity) remains unclear. This study aimed to test the possible relationship between hypertension and AD pathogenesis. Two animal models were used in this study. For the first model, 7-month-old Lanyu-miniature-pigs were given the abdominal aortic constriction operation to induce hypertension and their AD-related pathologies were assessed at 1, 2, and 3 months after the operation...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29614682/non-genetic-risk-factors-for-degenerative-and-vascular-young-onset-dementia-results-from-the-inspired-and-kgow-studies
#15
Monica Cations, Brian Draper, Lee-Fay Low, Kylie Radford, Julian Trollor, Henry Brodaty, Perminder Sachdev, Peter Gonski, Gerald Anthony Broe, Adrienne Withall
BACKGROUND: Several brain reserve, vascular risk, and other modifiable factors have been associated with late-onset dementia, but their association with young onset dementia (YOD) has not been adequately explored. OBJECTIVE: To examine the association of cognitive reserve enhancing factors, cardiovascular risk factors (including smoking), depression, alcohol use, and traumatic brain injury (TBI) with non-autosomal dominant degenerative and/or vascular YOD. METHODS: Data for this matched case-control study were taken from two larger studies conducted in NSW, Australia...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29606955/an-estimate-of-attributable-cases-of-alzheimer-disease-and-vascular-dementia-due-to-modifiable-risk-factors-the-impact-of-primary-prevention-in-europe-and-in-italy
#16
Flavia Mayer, Alessandra Di Pucchio, Eleonora Lacorte, Ilaria Bacigalupo, Fabrizio Marzolini, Gianluigi Ferrante, Valentina Minardi, Maria Masocco, Marco Canevelli, Teresa Di Fiandra, Nicola Vanacore
Background: Up to 53.7% of all cases of dementia are assumed to be due to Alzheimer disease (AD), while 15.8% are considered to be due to vascular dementia (VaD). In Europe, about 3 million cases of AD could be due to 7 potentially modifiable risk factors: diabetes, midlife hypertension and/or obesity, physical inactivity, depression, smoking, and low educational level. Aims: To estimate the number of VaD cases in Europe and the number of AD and VaD cases in Italy attributable to these 7 potentially modifiable risk factors...
January 2018: Dementia and Geriatric Cognitive Disorders Extra
https://www.readbyqxmd.com/read/29596471/predicting-dementia-from-primary-care-records-a-systematic-review-and-meta-analysis
#17
Elizabeth Ford, Nicholas Greenslade, Priya Paudyal, Stephen Bremner, Helen E Smith, Sube Banerjee, Shanu Sadhwani, Philip Rooney, Seb Oliver, Jackie Cassell
INTRODUCTION: Possible dementia is usually identified in primary care by general practitioners (GPs) who refer to specialists for diagnosis. Only two-thirds of dementia cases are currently recorded in primary care, so increasing the proportion of cases diagnosed is a strategic priority for the UK and internationally. Variables in the primary care record may indicate risk of developing dementia, and could be combined in a predictive model to help find patients who are missing a diagnosis...
2018: PloS One
https://www.readbyqxmd.com/read/29590321/polymorphisms-within-ryr3-gene-are-associated-with-risk-and-age-at-onset-of-hypertension-diabetes-and-alzheimer-s-disease
#18
Shaoqing Gong, Brenda Bin Su, Hugo Tovar, ChunXiang Mao, Valeria Gonzalez, Ying Liu, Yongke Lu, Ke-Sheng Wang, Chun Xu
Background: Hypertension affects 33% of Americans while type 2 diabetes and Alzheimer's disease (AD) affect 10% of Americans, respectively. Ryanodine receptor 3 gene (RYR3) codes for the ryanodine receptor which functions to release stored endoplasmic reticulum calcium ions (Ca2+ ) to increase intracellular Ca2+ concentration. Increasing studies demonstrate that altered levels of intracellular Ca2+ affects cardiac contraction, insulin secretion and neurodegeneration. In this study, we investigated associations of the RYR3 genetic variants with hypertension, AD, and diabetes...
March 26, 2018: American Journal of Hypertension
https://www.readbyqxmd.com/read/29588233/postpartum-increases-in-cerebral-edema-and-inflammation-in-response-to-placental-ischemia-during-pregnancy
#19
Ahsia M Clayton, Qingmei Shao, Nina D Paauw, Ashtin B Giambrone, Joey P Granger, Junie P Warrington
Reduced placental blood flow results in placental ischemia, an initiating event in the pathophysiology of preeclampsia, a hypertensive pregnancy disorder. While studies show increased mortality risk from Alzheimer's disease, stroke, and cerebrovascular complications in women with a history of preeclampsia, the underlying mechanisms are unknown. During pregnancy, placental ischemia, induced by reducing uterine perfusion pressure (RUPP), leads to cerebral edema and increased blood-brain barrier (BBB) permeability; however whether these complications persist after delivery is not known...
March 24, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29574441/lifestyle-and-vascular-risk-effects-on-mri-based-biomarkers-of-alzheimer-s-disease-a-cross-sectional-study-of-middle-aged-adults-from-the-broader-new-york-city-area
#20
Lisa Mosconi, Michelle Walters, Joanna Sterling, Crystal Quinn, Pauline McHugh, Randolph E Andrews, Dawn C Matthews, Christine Ganzer, Ricardo S Osorio, Richard S Isaacson, Mony J De Leon, Antonio Convit
OBJECTIVE: To investigate the effects of lifestyle and vascular-related risk factors for Alzheimer's disease (AD) on in vivo MRI-based brain atrophy in asymptomatic young to middle-aged adults. DESIGN: Cross-sectional, observational. SETTING: Broader New York City area. Two research centres affiliated with the Alzheimer's disease Core Center at New York University School of Medicine. PARTICIPANTS: We studied 116 cognitively normal healthy research participants aged 30-60 years, who completed a three-dimensional T1-weighted volumetric MRI and had lifestyle (diet, physical activity and intellectual enrichment), vascular risk (overweight, hypertension, insulin resistance, elevated cholesterol and homocysteine) and cognition (memory, executive function, language) data...
March 23, 2018: BMJ Open
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