Link found between obesity and Alzheimer ’s disease

Normal ageing, combined with a diet that leads to obesity, may contribute to the development to Alzheimer’s, according to a study inPhysiological Reports.Medical Xpress
Source: Society for Endocrinology - Category: Endocrinology Source Type: news

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This study showed that potential vicious cycles underlying ARDs are quite diverse and unique, triggered by diverse and unique factors that do not usually progress with age, thus casting doubts on the possibility of discovering the single molecular cause of aging and developing the single anti-aging pill. Rather, each disease appears to require an individual approach. However, it still cannot be excluded that some or all of these cycles are triggered by fundamental processes of aging, such as chronic inflammation or accumulation of senescent cells. Nevertheless, experimental data showing clear cause and effect relationships...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
The role of oxidized lipids in aging is often studied in the context of comparative biology, comparing different species with divergent life spans in order to try to identify the properties of cellular metabolism that are most influential on life span. It appears that the degree to which lipids are resistant to oxidative reactions is an important factor, and this has given rise to the membrane pacemaker hypothesis. There is something in mitochondrial function and resilience of lipids in mitochondrial membranes to forms of damage that is important in life span, at least at the scale of differences between species. Do lipid ...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
Publication date: 1 April 2019Source: NeuroImage, Volume 189Author(s): Claudia Metzler-Baddeley, Jilu P. Mole, Erika Leonaviciute, Rebecca Sims, Emma J. Kidd, Benyamin Ertefai, Aurora Kelso-Mitchell, Florence Gidney, Fabrizio Fasano, John Evans, Derek K. Jones, Roland J. BaddeleyAbstractMidlife obesity is a risk factor of late onset Alzheimer's disease (LOAD) but why this is the case remains unknown. As systemic inflammation is involved in both conditions, obesity-related neuroinflammation may contribute to damage in limbic structures important in LOAD. Here, we investigated the hypothesis that systemic inflammation would ...
Source: NeuroImage - Category: Neuroscience Source Type: research
In this study, we examined the benefits of early-onset, lifelong AET on predictors of health, inflammation, and cancer incidence in a naturally aging mouse model. Lifelong, voluntary wheel-running (O-AET; 26-month-old) prevented age-related declines in aerobic fitness and motor coordination vs. age-matched, sedentary controls (O-SED). AET also provided partial protection against sarcopenia, dynapenia, testicular atrophy, and overall organ pathology, hence augmenting the 'physiologic reserve' of lifelong runners. Systemic inflammation, as evidenced by a chronic elevation in 17 of 18 pro- and anti-inflammatory cytokin...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In this study, we assessed the presence of a correlat ion between plasma VIS level and insulin resistance or AD. Sixty participants were enrolled in this study; 34 patients with AD and 26 healthy subjects. All subjects underwent comprehensive evaluations including Mini-mental score exam (MMSE) for the diagnosis of dementia. Subjects with MMSE score  27. Fasting blood sugar (FBS) and insulin levels were measured by enzyme-linked immunosorbent assay. The results indicate a significant elevation in FBS from 103 ± 3.0 to 147 ± 7.6 in AD patients (p ≤ 0.001). Add...
Source: Acta Neurologica Belgica - Category: Neurology Source Type: research
Researchers here suggest a possible explanation for the observed association between disrupted sleep in later life and the development and progression of Alzheimer's disease. Sleep appears necessary to clear out tau produced during waking hours, and loss of sleep means raised levels of tau persist. The more tau in circulation, the more that an altered form of tau will be generated and aggregate into neurofibrillary tangles to damage brain cells. More research would be needed to quantify the size of this effect in comparison to, say, the contributions of lack of exercise or obesity. In the long run, however, one would hope ...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
Abstract The frequently studied polysaccharide, chitosan oligosaccharide (COS) is the major degradation product of chitosan/chitin via chemical hydrolysis or enzymatic degradation involving deacetylation and depolymerization processes. Innumerable studies have revealed in the recent decade that chitooligosaccharide (COS) has various promising biomedical implications in the past analysis, current developments and potential applications in a biomedical, pharmaceutical and agricultural sector. Innovations into COS derivatization has broadened its application in cosmeceutical and nutraceutical productions as well as i...
Source: International Journal of Biological Macromolecules - Category: Biochemistry Authors: Tags: Int J Biol Macromol Source Type: research
ROCHESTER, Minn. -- Diabetes, stress-induced aging and Alzheimer's disease, immigration-related obesity, and implantable drug testing devices are the targets of the research awards from the Minnesota Partnership for Biotechnology and Medical Genomics in 2019. This marks the partnership's 16th year of spearheading new scientific ideas from Minnesota to improve health care for Minnesotans. The state-funded [...]
Source: Mayo Clinic Minnesota News - Category: Hospital Management Source Type: news
In this study, we show that calorie restriction is protective against age-related increases in senescence and microglia activation and pro-inflammatory cytokine expression in an animal model of aging. Further, these protective effects mitigated age-related decline in neuroblast and neuronal production, and enhanced olfactory memory performance, a behavioral index of neurogenesis in the SVZ. Our results support the concept that calorie restriction might be an effective anti-aging intervention in the context of healthy brain aging. Greater Modest Activity in Late Life Correlates with Lower Incidence of Dementia ...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Increased oxidative stress and abundance of reactive oxygen species (ROS) are positively correlated with a variety of pathophysiologies, including cardiovascular disease, type 2 diabetes, Alzheimer's disease, and neuroinflammation. In adipose biology, diabetic obesity is correlated with increased ROS in an age- and depot-specific manner and is mechanistically linked to mitochondrial dysfunction, endoplasmic reticulum (ER) stress, potentiated lipolysis, and insulin resistance. The cellular quality control systems that homeostatically regulate oxidative stress in the lean state are down-regulated in obesity as a consequence ...
Source: Journal of Biological Chemistry - Category: Chemistry Authors: Tags: JBC Reviews Source Type: research
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