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Vitamin D AND alzheimers

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https://www.readbyqxmd.com/read/29124111/potential-implications-of-practice-effects-in-alzheimer-s-disease-prevention-trials
#1
Diane M Jacobs, M Colin Ard, David P Salmon, Douglas R Galasko, Mark W Bondi, Steven D Edland
Introduction: Practice effects (PEs) present a potential confound in clinical trials with cognitive outcomes. A single-blind placebo run-in design, with repeated cognitive outcome assessments before randomization to treatment, can minimize effects of practice on trial outcome. Methods: We investigated the potential implications of PEs in Alzheimer's disease prevention trials using placebo arm data from the Alzheimer's Disease Cooperative Study donepezil/vitamin E trial in mild cognitive impairment...
November 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/28988826/clinical-diagnostic-tools-for-vitamin-d-assessment
#2
Iltaf Shah, M Kalim Akhtar, Soleiman Hisaindee, Muhammad A Rauf, Mohammed Sadig, S Salman Ashraf
Vitamin D deficiency has been implicated in a plethora of diseases including rheumatoid arthritis, Parkinson's disease, Alzheimer's disease, and osteoporosis. Deficiency of this vitamin is a global epidemic affecting both developing and developed nations. Within a clinical context, the qualitative and quantitative analysis of vitamin D is therefore vital. The main metabolic markers for assessing vitamin D status in humans are the hydroxylated forms of vitamin D, 25OHD3 and 25OHD2 on account of their long half-lives within the body and excellent stability...
October 5, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28985720/effects-of-homocysteine-on-white-matter-diffusion-parameters-in-alzheimer-s-disease
#3
Chen-Chang Lee, Shih-Wei Hsu, Chi-Wei Huang, Wen-Neng Chang, Sz-Fan Chen, Ming-Kung Wu, Chiung-Chih Chang, Lain-Chyr Hwang, Po-Chou Chen
BACKGROUND: The clinical features of Alzheimer's disease (AD) are related to brain network degeneration, and hyperhomocysteinemia is related to greater white matter hyperintensities. We investigated the changes in four diffusion tensor imaging parameters in the white matter of patients with early stage AD, examined their associations with homocysteine level, and tested the clinical significance of the diffusion tensor imaging parameters and homocysteine level in correlation analysis with cognitive test scores...
October 6, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28984598/vitamin-d-and-the-risk-of-dementia-the%C3%A2-rotterdam-study
#4
Silvan Licher, Renée F A G de Bruijn, Frank J Wolters, M Carola Zillikens, M Arfan Ikram, M Kamran Ikram
BACKGROUND: Vitamin D has gained interest as a potentially modifiable risk factor for dementia because of its putative neuroprotective effects. However, longitudinal studies examining the association between vitamin D and dementia have provided inconsistent results. OBJECTIVE: To determine the relationship of serum vitamin D with prevalent and incident dementia in the general population. METHODS: Within the prospective Rotterdam Study, we measured serum 25-hydroxyvitamin D concentrations between 1997 and 2001 using electrochemiluminescence-immunoassay in 6220 participants 55 years or older...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28980606/-modern-conception-of-the-pathogenesis-of-neurodegenerative-diseases-and-therapeutic-strategy
#5
I V Litvinenko, I V Krasakov, G N Bisaga, D I Skulyabin, I D Poltavsky
Here we discuss the pathogenesis of the inflammatory and degenerative nervous system disorders on the example of Parkinson's disease, Alzheimer's disease, multiple sclerosis. Common mechanisms of neurodegeneration in these diseases are reviewed. The role of neurodegeneration as the main process leading to the resistant disability of patients with multiple sclerosis is discussed. The authors consider a contribution of inflammatory process and chronic infection to the manifestation and progressing of a neurodegenerative disease and discuss the use of treatment not usually indicated including interferon, anti-inflammatory drugs, statin, vitamin D, monoclonal antibodies, correction of the intestinal microbiota in Parkinson's disease and Alzheimer's disease...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28974906/alzheimer-s-disease-and-osteoporosis
#6
REVIEW
Yu-Hung Chen, Raymond Y Lo
Alzheimer's disease (AD) and osteoporosis are both common degenerative diseases in the elderly population. The incidence of both diseases increases with age and will be posing enormous societal burden worldwide. It may appear that AD and osteoporosis are two distinct diseases although many risk factors are shared. Previous observational studies have shown that patients with osteoporosis have higher risks of developing AD than those who do not have osteoporosis. Although osteoporosis, falls, and fractures are more often seen in patients with AD than other older adults, the association between these two diseases may be due to a pathophysiological link rather than one condition causing the other...
July 2017: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/28949008/vitamin-d-deficiency-accelerates-ageing-and-age-related-diseases-a-novel-hypothesis
#7
Michael J Berridge
Ageing can occur at different rates, but what controls this variable rate is unknown. Here I have developed a hypothesis that vitamin D may act to control the rate of ageing. The basis of this hypothesis emerged from studyng the various cellular processes that control ageing. These processes such as autophagy, mitochondrial dysfunction, inflammation, oxidative stress, epigenetic changes, DNA disorders and alterations in Ca(2+) and reactive oxygen species (ROS) signalling are all known to be regulated by vitamin D...
November 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28936398/vitamin-d-is-associated-with-severity-and-mortality-of-non-alcoholic-fatty-liver-disease-a-us-population-based-study
#8
Hyun-Seok Kim, Laura Rotundo, Neil Kothari, Sung-Hoon Kim, Nikolaos Pyrsopoulos
Background and Aims: There has been increasing evidence that vitamin D deficiency may increase the risk of metabolic syndrome. Since metabolic syndrome is a major risk factor for non-alcoholic fatty liver disease (NAFLD), we aimed to investigate the association between vitamin D and the severity and mortality of NAFLD. Methods: Data was obtained from the United States Third National Health and Nutrition Examination Survey conducted in 1988-1994, with follow-up mortality data through 2011. NAFLD was defined by ultrasonographic detection of hepatic steatosis in the absence of other liver diseases and categorized as normal, mild, moderate or severe...
September 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28915381/adult-vitamin-d-deficiency-exacerbates-impairments-caused-by-social-stress-in-balb-c-and-c57bl-6-mice
#9
Natalie J Groves, Mei Zhou, Dhanisha J Jhaveri, John J McGrath, Thomas H J Burne
Vitamin D deficiency is prevalent in adults throughout the world. Epidemiological studies have shown significant associations between vitamin D deficiency and an increased risk of various neuropsychiatric and neurodegenerative disorders, such as schizophrenia, depression, Alzheimer's disease and cognitive impairment. However, studies based on observational epidemiology cannot address questions of causality; they cannot determine if vitamin D deficiency is a causal factor leading to the adverse health outcome...
December 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28816551/1%C3%AE-25-dihydroxyvitamin-d3-up-regulates-il-34-expression-in-sh-sy5y-neural-cells
#10
Dong Zhang, Miaomiao Li, Yang Dong, Xinhui Zhang, Xingyun Liu, Zhangming Chen, Yongji Zhu, Huiming Wang, Xuwen Liu, Jialiang Zhu, Yujun Shen, Heinrich Korner, Songcheng Ying, Shengyun Fang, Yuxian Shen
Vitamin D supplementation is regarded as a novel approach to treat Alzheimer's disease, but the underlying mechanism remains elusive. The cytokine IL-34 provides strong neuroprotective and survival signals in brain injury and neurodegeneration and could be an immunological mediator for the vitamin D-induced protection. The aim of this study was to investigate whether human IL-34 is up-regulated in neuronal cells by the hormonally active form of vitamin D, 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3]. We found that IL-34 was detectable in a variety of cell lines and its expression was strongly induced in SH-SY5Y neural cells in a dose- and time-dependent manner by 1α,25(OH)2D3 through the vitamin D receptor (VDR)...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28807434/nutritional-strategies-in-the-management-of-alzheimer-disease-systematic-review-with-network-meta-analysis
#11
Shirley Steffany Muñoz Fernández, Terry Ivanauskas, Sandra Maria Lima Ribeiro
BACKGROUND: Alzheimer disease (AD) is the major cause of dependency and disability in the elderly. Numerous studies have sought to achieve its prevention and/or management examining a role for modifiable risk factors, such as nutrition. This work aims to investigate the effects of food and/or nutrients in the management of AD at different stages. METHODS: Electronic databases were searched for clinical trials examining the effect of nutrient intervention in individuals with AD, compared with placebo, published up to 2014...
October 1, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28707894/vitamin-d-receptor-regulates-amyloid-beta-1-42-production-with-protein-disulfide-isomerase-a3
#12
Duygu Gezen-Ak, Irem L Atasoy, Esin Candaş, Merve Alaylioglu, Selma Yılmazer, Erdinç Dursun
The challenge of understanding the biology of neuronal amyloid processing could provide a basis for understanding the amyloid pathology in Alzheimer's disease (AD). Based on our previous studies, we have suggested that AD might be the consequence of a hormonal imbalance in which the critical hormone is vitamin D. The present study primarily focused on the creation of a condition that prevents the genomic or nongenomic action of vitamin D by disrupting vitamin D receptors (VDR or PDIA3/1,25MARRS); the effects of these disruptions on the series of proteins involved in secretases that play a crucial role in amyloid pathology and on amyloid beta (Aβ) production in primary cortical neurons were observed...
July 28, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28669880/role-of-vitamin-d-in-amyloid-clearance-via-lrp-1-upregulation-in-alzheimer-s-disease-a-potential-therapeutic-target
#13
REVIEW
Parmi Patel, Jigna Shah
Amyloid beta (Aβ) deposition is considered to be one of the primary reason to trigger Alzheimer's disease (AD). Literature clearly suggests decline in Aβ clearance to be accountable for progression of late onset AD as compared to augmented Aβ production. There may be several pathways for Aβ clearance out of which one of the major pathway is the vascular-mediated removal of Aβ from the brain across the blood-brain barrier (BBB) via efflux pumps or receptors. Among Aβ scavenger receptors, low density lipoprotein receptor related protein (LRP-1) has been most extensively studied...
November 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28611659/vitamin-d-homocysteine-and-folate-in-subcortical-vascular-dementia-and-alzheimer-dementia
#14
Rita Moretti, Paola Caruso, Matteo Dal Ben, Corrado Conti, Silvia Gazzin, Claudio Tiribelli
Dementia is a worldwide health problem which affects millions of patients; Alzheimer's disease (AD) and subcortical vascular dementia (sVAD) are the two most frequent forms of its presentation. As no definite therapeutic options have been discovered, different risk factors for cognitive impairment have been searched for potential therapies. This report focuses on the possible evidence that vitamin D deficiency and hyper-homocysteinemia can be considered as two important factors for the development or the progression of neurodegenerative or vascular pathologies...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28580183/role-of-pro-inflammatory-cytokines-and-vitamin-d-in-probable-alzheimer-s-disease-with-depression
#15
Anindita Banerjee, Vineet Kumar Khemka, Debashree Roy, Aparajita Dhar, Tapan Kumar Sinha Roy, Atanu Biswas, Barun Mukhopadhyay, Sasanka Chakrabarti
Symptoms of depression are present in a significant proportion of Alzheimer's disease (AD) patients. While epidemiological studies have shown a strong association between depression and AD, it has not been established whether depression is a risk factor or merely a co-morbidity of AD. It is also uncertain if depression affects the pathogenesis of AD. In this paper, we address these questions by measuring the serum levels of two common metabolic risk factors of AD and depression, inflammatory cytokines (IL 6 and TNF alpha) and serum 25-hydroxyvitamin D, in a case-control study...
May 2017: Aging and Disease
https://www.readbyqxmd.com/read/28567345/dementia-and-osteoporosis-in-a-geriatric-population-is-there-a-common-link
#16
Candice L Downey, Adam Young, Emily F Burton, Simon M Graham, Robert J Macfarlane, Eva-Maria Tsapakis, Eleftherios Tsiridis
AIM: To determine the existence of a common pathological link between dementia and osteoporosis through reviewing the current evidence base. METHODS: This paper reviews the current literature on osteoporosis and dementia in order to ascertain evidence of a common predisposing aetiology. A literature search of Ovid MED-LINE (1950 to June 2016) was conducted. The keywords "osteoporosis", "osteoporotic fracture", "dementia" and "Alzheimer's disease" (AD) were used to determine the theoretical links with the most significant evidence base behind them...
May 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28522216/associations-of-lower-vitamin-d-concentrations-with-cognitive-decline-and-long-term-risk-of-dementia-and-alzheimer-s-disease-in-older-adults
#17
Catherine Feart, Catherine Helmer, Bénédicte Merle, François R Herrmann, Cédric Annweiler, Jean-François Dartigues, Cécile Delcourt, Cécilia Samieri
INTRODUCTION: Hypovitaminosis D has been associated with several chronic conditions; yet, its association with cognitive decline and the risk of dementia and Alzheimer's disease (AD) has been inconsistent. METHODS: The study population consisted of 916 participants from the Three-City Bordeaux cohort aged 65+, nondemented at baseline, with assessment of vitamin D status and who were followed for up to 12 years. RESULTS: In multivariate analysis, compared with individuals with 25(OH)D sufficiency (n = 151), participants with 25(OH)D deficiency (n = 218) exhibited a faster cognitive decline...
May 9, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28478840/alzheimer-s-disease-and-other-neurodegenerative-diseases-may-be-due-to-nutritional-deficiencies-secondary-to-unrecognized-exocrine-pancreatic-insufficiency
#18
Steven R Brenner
Alzheimer's disease (AD) may be related to nutritional deficiencies from exocrine pancreatic insufficiency (EPI) with mal-absorption of essential nutrients, vitamins and minerals. EPI occurs in about twenty percent of the elderly population, sometimes without obvious symptoms, a number similar to the incidence of AD. Other Neurological degenerative diseases with potential nutritional components such as Parkinson's disease, frailty of age and Multiple Sclerosis, a disease with increased activity from vitamin D deficiency, may also be related to untreated exocrine pancreatic insufficiency causing impaired absorption of essential dietary elements...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28471760/magnesium-supplementation-in-vitamin-d-deficiency
#19
Pramod Reddy, Linda R Edwards
BACKGROUND: Vitamin D and magnesium (Mg) are some of the most studied topics in medicine with enormous implications for human health and disease. Majority of the adults are deficient in both vitamin D and magnesium but continue to go unrecognized by many health care professionals. AREAS OF UNCERTAINTY: Mg and vitamin D are used by all the organs in the body, and their deficiency states may lead to several chronic medical conditions. Studies described in the literature regarding these disease associations are contradictory, and reversal of any of these conditions may not occur for several years after adequate replacement...
May 3, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28421328/association-of-adiponectin-leptin-and-resistin-with-inflammatory-markers-and-obesity-in-dementia
#20
Małgorzata Bednarska-Makaruk, Ałła Graban, Anna Wiśniewska, Wanda Łojkowska, Anna Bochyńska, Magdalena Gugała-Iwaniuk, Ksenia Sławińska, Agnieszka Ługowska, Danuta Ryglewicz, Hanna Wehr
The aim of the study was to determine the role of adiponectin, leptin and resistin in various types of dementia and to investigate their association with inflammatory markers, insulin resistance and abdominal obesity. In 205 patients with dementia [89 with Alzheimer's disease (AD), 47 with vascular dementia (VaD), 69 with mixed dementia (MD)], 113 persons with mild cognitive impairment and in 107 controls serum adiponectin, leptin and resistin levels, pro-inflammatory [interleukin-6 (IL-6), C-reactive protein (hsCRP) and chitotriosidase] and anti-inflammatory (25-OH vitamin D, HDL-cholesterol and paraoxonase 1) markers, as well as glucose metabolism parameters (glucose, insulin and HOMA-IR) were determined...
August 2017: Biogerontology
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