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Alzheimers and obesity

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https://www.readbyqxmd.com/read/28723664/detecting-the-genetic-link-between-alzheimer-s-disease-and-obesity-using-bioinformatics-analysis-of-gwas-data
#1
Qi-Shuai Zhuang, Hao Zheng, Xiao-Dan Gu, Liang Shen, Hong-Fang Ji
Alzheimer's disease (AD) represents the major form of dementia in the elderly. In recent years, accumulating evidence indicate that obesity may act as a risk factor for AD, while the genetic link between the two conditions remains unclear. This bioinformatics analysis aimed to detect the genetic link between AD and obesity on single nucleotide polymorphisms (SNPs), gene, and pathway levels based on genome-wide association studies data. A total of 31 SNPs were found to be shared by AD and obesity, which were linked to 7 genes...
July 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28712011/fgf21-attenuates-high-fat-diet-induced-cognitive-impairment-via-metabolic-regulation-and-anti-inflammation-of-obese-mice
#2
Qingzhi Wang, Jing Yuan, Zhanyang Yu, Li Lin, Yinghua Jiang, Zeyuan Cao, Pengwei Zhuang, Michael J Whalen, Bo Song, Xiao-Jie Wang, Xiaokun Li, Eng H Lo, Yuming Xu, Xiaoying Wang
Accumulating studies suggest that overnutrition-associated obesity may lead to development of type 2 diabetes mellitus and metabolic syndromes (MetS). MetS and its components are important risk factors of mild cognitive impairment, age-related cognitive decline, vascular dementia, and Alzheimer's disease. It has been recently proposed that development of a disease-course modification strategy toward early and effective risk factor management would be clinically significant in reducing the risk of metabolic disorder-initiated cognitive decline...
July 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28701250/the-ketogenic-diet-making-a-comeback
#3
Thomas Walczyk, Jeannette Y Wick
Americans have embraced a large number of diets in an attempt to manage obesity, improve quality of life, and address specific health problems. Among diets developed to address health problems, the ketogenic diet has had a long and variable history. Developed in the 1920s by a faith healer to help children with epilepsy, this diet induces a state that mimics carbohydrate starvation. As medications became available and effectively addressed seizures, the diet fell out of favor. During the last few decades, researchers and clinicians have learned that it can be useful in children and adults with refractory epilepsy and a variety of other conditions...
July 1, 2017: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28697560/relationship-between-body-mass-index-apoe4-status-and-pet-based-amyloid-and-neurodegeneration-markers-in-amyloid-positive-subjects-with-normal-cognition-or-mild-cognitive-impairment
#4
Janusch Blautzik, Sebastian Kotz, Matthias Brendel, Julia Sauerbeck, Franziska Vettermann, Yaroslav Winter, Peter Bartenstein, Kazunari Ishii, Axel Rominger
Body weight loss in late-life is known to occur at a very early stage of Alzheimer's disease (AD). Apolipoprotein E4 (ApoE4) represents a major genetic risk factor for AD and is linked to an increased cortical amyloid-β (Aβ) accumulation. Since the relationship between body weight, ApoE4, and AD pathology is poorly investigated, we aimed to evaluate whether ApoE4 allelic status modifies the association of body mass index (BMI) with markers of AD pathology. A total of 368 Aβ-positive cognitively healthy or mild cognitive impaired subjects had undergone [18F]-AV45-PET, [18F]-FDG-PET, and T1w-MRI examinations...
July 5, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28692781/depression-as-a-risk-factor-of-organic-diseases-an-international-integrative-review
#5
Teodora Bica, Ruth Castelló, Loren L Toussaint, Pilar Montesó-Curto
PURPOSE AND DESIGN: This integrative review offers a systematic synthesis of the international literature regarding the role of depression as a risk factor in physical illnesses and the mechanisms of this connection. Special attention is paid to those modifiable factors. FINDINGS: Published studies of depression and physical illness and disease(N = 24) from five countries that were indexed in PubMed, the Cumulative Index to Nursing and Allied Health Literature (CINAHL), APA PsycNET, Scopus, Dialnet, and CUIDEN were examined...
July 2017: Journal of Nursing Scholarship
https://www.readbyqxmd.com/read/28686542/polyunsaturated-fatty-acids-and-endocannabinoids-in-health-and-disease
#6
Hércules Rezende Freitas, Alinny Rosendo Isaac, Renato Malcher-Lopes, Bruno Lourenço Diaz, Isis Hara Trevenzoli, Ricardo Augusto De Melo Reis
Polyunsaturated fatty acids (PUFAs) are lipid derivatives of omega-3 (docosahexaenoic acid, DHA, and eicosapentaenoic acid, EPA) or of omega-6 (arachidonic acid, ARA) synthesized from membrane phospholipids and used as a precursor for endocannabinoids (ECs). They mediate significant effects in the fine-tune adjustment of body homeostasis. Phyto- and synthetic cannabinoids also rule the daily life of billions worldwide, as they are involved in obesity, depression and drug addiction. Consequently, there is growing interest to reveal novel active compounds in this field...
July 7, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28673587/bariatric-surgery-may-reduce-the-risk-of-alzheimer-s-diseases-through-glp-1-mediated-neuroprotective-effects
#7
Hari B Keshava, Ashkan Mowla, Leslie J Heinberg, Philip R Schauer, Stacy A Brethauer, Ali Aminian
Obesity and diabetes are associated with deficits in multiple neurocognitive domains and increased risk for dementia. Over the last two decades, there has been a significant increase in bariatric and metabolic surgery worldwide, driven by rising intertwined pandemics of obesity and diabetes, along with improvement in surgical techniques. Patients undergoing bariatric surgery achieve a significant decrease in their excess weight and a multitude of sequela associated with obesity, diabetes, and metabolic syndrome...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28673105/small-molecules-as-activators-in-medicinal-chemistry-2000-2016
#8
Abdul Hameed, Mariya Al-Rashida, Rima D Alharthy, Maliha Uroos, Ehsan Ullah Mughal, Syed Abid Ali, Khalid Mohammed Khan
From therapeutic point of view, it is often beneficial to enhance the expression of certain enzymes whose low expression is responsible for the observed ailment. Small molecule as activators of several enzymes have great biological potential such as anti-microbial and anti-cancer agents, for the treatment of diabetes, obesity, metabolic disorders, and for the treatment of neurological disorders including Alzheimer's disease. This review covers the patents describing small molecule as activators to leads for the design of even more potent activators...
July 4, 2017: Expert Opinion on Therapeutic Patents
https://www.readbyqxmd.com/read/28660375/the-combined-effect-of-blackcurrant-powder-and-wholemeal-flours-to-improve-health-promoting-properties-of-cookies
#9
A K M Mofasser Hossain, Margaret A Brennan, Susan L Mason, Xinbo Guo, Charles S Brennan
A diet with high glycaemic index, which causes rapid spikes in blood sugar level, can lead to disorders such as significantly increased risk for type 2 diabetes, cardiovascular disease and obesity. These conditions are also linked to the progression of cognitive decline and neurodegenerative diseases including Alzheimer's disease. Blackcurrant powder (BC) is a rich source of dietary fibre and bioactive compounds. Wholemeal wheat, barley and oat flours contain high amount of fibre. In this study, a model food (cookie) was developed and used to investigate the in vitro glycaemic glucose equivalent and antioxidant activities of the cookies made with three different wholemeal flours (wheat, barley and oat) with different replacement levels (5, 10 and 15%) of blackcurrant powder...
June 28, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28659580/palmitic-acid-bsa-enhances-amyloid-%C3%AE-production-through-gpr40-mediated-dual-pathways-in-neuronal-cells-involvement-of-the-akt-mtor-hif-1%C3%AE-and-akt-nf-%C3%AE%C2%BAb-pathways
#10
Jeong Yeon Kim, Hyun Jik Lee, Sei-Jung Lee, Young Hyun Jung, Dae Young Yoo, In Koo Hwang, Je Kyung Seong, Jung Min Ryu, Ho Jae Han
The pathophysiological actions of fatty acids (FAs) on Alzheimer's disease (AD), which are possibly mediated by genomic effects, are widely known; however, their non-genomic actions remain elusive. The aim of this study was to investigate the non-genomic mechanism of extra-cellular palmitic acid (PA) regulating beta-amyloid peptide (Aβ) production, which may provide a link between obesity and the occurrence of AD. In an obese mouse model, a high-fat diet (HFD) significantly increased the expression levels of APP and BACE1 as well as the AD pathology in the mouse brain...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28643167/microbiome-probiotics-and-neurodegenerative-diseases-deciphering-the-gut-brain-axis
#11
REVIEW
Susan Westfall, Nikita Lomis, Imen Kahouli, Si Yuan Dia, Surya Pratap Singh, Satya Prakash
The gut microbiota is essential to health and has recently become a target for live bacterial cell biotherapies for various chronic diseases including metabolic syndrome, diabetes, obesity and neurodegenerative disease. Probiotic biotherapies are known to create a healthy gut environment by balancing bacterial populations and promoting their favorable metabolic action. The microbiota and its respective metabolites communicate to the host through a series of biochemical and functional links thereby affecting host homeostasis and health...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28615163/understanding-mechanisms-and-seeking-cures-for-alzheimer-s-disease-why-we-must-be-extraordinarily-diverse
#12
Madhav Thambisetty
After more than a century since Dr. Alois Alzheimer first described the pathological hallmarks accompanying the defining clinical features of the disease, we have yet to deliver any meaningful disease-modifying treatments to our patients. In this article, we present a rationale for the need to be "extraordinarily diverse" in seeking effective ways to treat or prevent this devastating disease. Our approach is based on applying a systems-biology perspective at the population level, using a diverse array of 'OMICS' methodologies to identify molecular mechanisms associated with well-established AD risk factors including systemic inflammation, obesity and insulin resistance...
June 14, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28612048/obesity-accelerates-alzheimer-related-pathology-in-apoe4-but-not-apoe3-mice
#13
V Alexandra Moser, Christian J Pike
Alzheimer's disease (AD) risk is modified by both genetic and environmental risk factors, which are believed to interact to cooperatively modify pathogenesis. Although numerous genetic and environmental risk factors for AD have been identified, relatively little is known about potential gene-environment interactions in regulating disease risk. The strongest genetic risk factor for late-onset AD is the ε4 allele of apolipoprotein E (APOE4). An important modifiable risk factor for AD is obesity, which has been shown to increase AD risk in humans and accelerate development of AD-related pathology in rodent models...
May 2017: ENeuro
https://www.readbyqxmd.com/read/28611655/obesity-and-co-morbid-conditions-are-associated-with-specific-neuropsychiatric-symptoms-in-mild-cognitive-impairment
#14
Ashley H Sanderlin, David Todem, Andrea C Bozoki
Background: Neuropsychiatric symptoms (NPSs) in MCI, and midlife obesity increase the likelihood of developing Alzheimer's disease. It is unknown whether obesity or related health conditions modify the risk of NPS or severity of cognitive impairment in MCI. Methods: One hundred and thirteen subjects with MCI were assessed near the time of MCI diagnosis. The sample was divided by BMI and related disorders, type-2 diabetes (T2D) and obstructive sleep apnea (OSA) to measure the relationship of these groups with NPS and severity of MCI...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28583368/the-impact-of-obesity-on-neurodegenerative-diseases
#15
REVIEW
Janaína Niero Mazon, Aline Haas de Mello, Gabriela Kozuchovski Ferreira, Gislaine Tezza Rezin
Neurodegenerative diseases are a growing health concern. The increasing incidences of these disorders have a great impact on the patients' quality of life. Although the mechanisms of neurodegenerative diseases are still far from being clarified, several studies look for new discoveries about their pathophysiology and prevention. Furthermore, evidence has shown a strong correlation between obesity and the development of Alzheimer's disease (AD) and Parkinson's disease (PD). Metabolic changes caused by overweight are related to damage to the central nervous system (CNS), which can lead to neural death, either by apoptosis or cell necrosis, as well as alter the synaptic plasticity of the neuron...
August 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28582856/lipidomic-profiles-in-diabetes-and%C3%A2-dementia
#16
Kevin Huynh, Ralph N Martins, Peter J Meikle
Lipids are a diverse class of hydrophobic and amphiphilic molecules which make up the bulk of most biological systems and are essential for human life. The role of lipids in health and disease has been recognized for many decades, as evidenced by the early identification of cholesterol as an important risk factor of heart disease and the development and introduction of statins as a one of the most successful therapeutic interventions to date. While several studies have demonstrated an increased risk of dementia, including Alzheimer's disease (AD), in those with diabetes mellitus, the nature of this risk is not well understood...
May 30, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28582855/diabetes-and-alzheimer-s-disease-can-tea-phytochemicals-play-a-role-in-prevention
#17
Warnakulasuriya M A D B Fernando, Geeshani Somaratne, Kathryn G Goozee, Shehan Williams, Harjinder Singh, Ralph N Martins
Dementia and diabetes mellitus are prevalent disorders in the elderly population. While recognized as two distinct diseases, diabetes has more recently recognized as a significant contributor to risk for developing dementia, and some studies make reference to type 3 diabetes, a condition resulting from insulin resistance in the brain. Alzheimer's disease, the most common form of dementia, and diabetes, interestingly, share underlying pathological processes, commonality in risk factors, and, importantly, pathways for intervention...
May 30, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28577973/membrane-lipid-therapy-a-historical-perspective-of-membrane-targeted-therapies-from-lipid-bilayer-structure-to-the-pathophysiological-regulation-of-cells
#18
EDITORIAL
Pablo V Escribá
Our current understanding of membrane lipid composition, structure and functions has led to the investigation of their role in cell signaling, both in healthy and pathological cells. As a consequence, therapies based on the regulation of membrane lipid composition and structure have been recently developed. This novel field, known as Membrane Lipid Therapy, is growing and evolving rapidly, providing treatments that are now in use or that are being studied for their application to oncological disorders, Alzheimer's disease, spinal cord injury, stroke, diabetes, obesity, and neuropathic pain...
June 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28575011/age-dependent-regulation-of-obesity-and-alzheimer-related-outcomes-by-hormone-therapy-in-female-3xtg-ad-mice
#19
Amy Christensen, Christian J Pike
Depletion of ovarian hormones at menopause is associated with increased Alzheimer's disease (AD) risk. Hormone loss also increases central adiposity, which promotes AD development. One strategy to improve health outcomes in postmenopausal women is estrogen-based hormone therapy (HT), though its efficacy is controversial. The window of opportunity hypothesis posits that HT is beneficial only if initiated near the onset of menopause. Here, we tested this hypothesis by assessing the efficacy of HT against diet-induced obesity and AD-related pathology in female 3xTg-AD mice at early versus late middle-age...
2017: PloS One
https://www.readbyqxmd.com/read/28550257/increasing-body-mass-index-at-midlife-is-associated-with-increased-cortical-thinning-in-alzheimer-s-disease-vulnerable-regions
#20
Marnie E Shaw, Walter P Abhayaratna, Kaarin J Anstey, Nicolas Cherbuin
Higher body mass index (BMI) at midlife is associated with greater decreases in cognitive function at older age as well as increased Alzheimer's disease (AD) risk, compared to those with normal BMI. Here, we tested whether BMI at midlife was associated with cortical thinning in brain regions known to be affected in early AD. We examined a large sample (n = 404) of midlife individuals (44-49 years) from the PATH population-based study. Individuals were scanned with magnetic resonance imaging (1.5T) on up to three occasions over eight years...
2017: Journal of Alzheimer's Disease: JAD
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