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Alzheimers and obesity

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https://www.readbyqxmd.com/read/28179815/considering-sex-and-gender-in-alzheimer-disease-and-other-dementias
#1
Jessica L Podcasy, C Neill Epperson
Suffering related to dementia is multifaceted because cognitive and physical functioning slowly deteriorates. Advanced age and sex, two of the most prominent risk factors for dementia, are not modifiable. Lifestyle factors such as smoking, excessive alcohol use, and poor diet modulate susceptibility to dementia in both males and females. The degree to which the resulting health conditions (eg, obesity, type 2 diabetes, and cardiovascular disease) impact dementia risk varies by sex. Depending on the subtype of dementia, the ratio of male to female prevalence differs...
December 2016: Dialogues in Clinical Neuroscience
https://www.readbyqxmd.com/read/28152057/potent-effects-of-flavonoid-nobiletin-on-amplitude-period-and-phase-of-the-circadian-clock-rhythm-in-per2-luciferase-mouse-embryonic-fibroblasts
#2
Ayako Shinozaki, Kenichiro Misawa, Yuko Ikeda, Atsushi Haraguchi, Mayo Kamagata, Yu Tahara, Shigenobu Shibata
Flavonoids are natural polyphenols that are widely found in plants. The effects of flavonoids on obesity and numerous diseases such as cancer, diabetes, and Alzheimer's have been well studied. However, little is known about the relationships between flavonoids and the circadian clock. In this study, we show that continuous or transient application of flavonoids to the culture medium of embryonic fibroblasts from PER2::LUCIFERASE (PER2::LUC) mice induced various modifications in the circadian clock amplitude, period, and phase...
2017: PloS One
https://www.readbyqxmd.com/read/28115234/positive-effects-of-intermittent-fasting-in-ischemic-stroke
#3
David Yang-Wei Fann, Gavin Yong Quan Ng, Luting Poh, Thiruma V Arumugam
Intermittent fasting (IF) is a dietary protocol where energy restriction is induced by alternate periods of ad libitum feeding and fasting. Prophylactic intermittent fasting has been shown to extend lifespan and attenuate the progress and severity of age-related diseases such as cardiovascular (e.g. stroke and myocardial infarction), neurodegenerative (e.g. Alzheimer's disease and Parkinson's disease) and cancerous diseases in animal models. Stroke is the second leading cause of death, and lifestyle risk factors such as obesity and physical inactivity have been associated with elevated risks of stroke in humans...
January 20, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28108292/reversal-of-high-fat-diet-induced-obesity-improves-glucose-tolerance-inflammatory-response-%C3%AE-amyloid-accumulation-and-cognitive-decline-in-the-app-psen1-mouse-model-of-alzheimer-s-disease
#4
Jennifer M Walker, Shilpy Dixit, Anjelica C Saulsberry, James M May, Fiona E Harrison
This study assessed the extent to which high fat diet (HFD)-induced β-amyloid accumulation and cognitive decline in APP/PSEN1 mice are reversible through control of fat intake. Ten months of HFD (60% calories from fat) led to significant deficits in a 2-trial Y maze task, and nest building assay, and decreased voluntary locomotor activity. The HFD induced an inflammatory response, indicated by increased expression of several inflammatory markers. Substituting a low fat diet led to pronounced weight loss and correction of glucose intolerance, decreases in the inflammatory response, and improved performance on behavioral tasks in both wild-type and APP/PSEN1 transgenic mice...
January 17, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28071980/metabolic-syndrome-hypertension-and-nervous-system-injury-epidemiological-correlates
#5
Giovanna Ricci, Isabel Pirillo, Daniele Tomassoni, Ascanio Sirignano, Iolanda Grappasonni
: Metabolic syndrome (MetS) is a common and complex disorder combining hypertension, obesity, dyslipidemia, and insulin resistance. MetS represents a risk factor for changes in cognitive functions in older age, and several studies have suggested that MetS may be linked to dementia. This article reviews the main evidences about the relationship between MetS and neurodegenerative disease. Starting from an epidemiological point of view, the article analyzes medico-social aspects related to MetS, considering the reduction of work capacity and the condition of disability that it involves...
2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/27988430/kinin-receptors-key-regulators-of-autoimmunity
#6
REVIEW
Rafael Cypriano Dutra
The central function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body, and preventing the onset of illness and infection. Moreover, the immune system is constantly challenged to discriminate self vs. non-self and mediate the correct response, a phenomenon called self-tolerance. The failure of mechanisms responsible for self-tolerance and induction of an immune response against components of the self, induces autoimmunity and culminates however, in several autoimmune diseases...
February 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/27939359/a-story-of-metformin-butyrate-synergism-to-control-various-pathological-conditions-as-a-consequence-of-gut-microbiome-modification-genesis-of-a-wonder-drug
#7
REVIEW
Kunal Maniar, Amal Moideen, Ankur Mittal, Amol Patil, Amitava Chakrabarti, Dibyajyoti Banerjee
The most widely prescribed oral anti-diabetic agent today in the world today is a member of the biguanide class of drugs called metformin. Apart from its use in diabetes, it is currently being investigated for its potential use in many diseases such as cancer, cardiovascular diseases, Alzheimer's disease, obesity, comorbidities of diabetes such as retinopathy, nephropathy to name a few. Numerous in-vitro and in-vivo studies as well as clinical trials have been and are being conducted with a vast amount of literature being published every day...
December 8, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27933671/causal-inference-in-obesity-research
#8
REVIEW
P W Franks, N Atabaki-Pasdar
Obesity is a risk factor for a plethora of severe morbidities and premature death. Most supporting evidence comes from observational studies that are prone to chance, bias and confounding. Even data on the protective effects of weight loss from randomized controlled trials will be susceptible to confounding and bias if treatment assignment cannot be masked, which is usually the case with lifestyle and surgical interventions. Thus, whilst obesity is widely considered the major modifiable risk factor for many chronic diseases, its causes and consequences are often difficult to determine...
December 8, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27932945/monoaminergic-and-histaminergic-strategies-and-treatments-in-brain-diseases
#9
REVIEW
Giuseppe Di Giovanni, Dubravka Svob Strac, Montse Sole, Mercedes Unzeta, Keith F Tipton, Dorotea Mück-Šeler, Irene Bolea, Laura Della Corte, Matea Nikolac Perkovic, Nela Pivac, Ilse J Smolders, Anna Stasiak, Wieslawa A Fogel, Philippe De Deurwaerdère
The monoaminergic systems are the target of several drugs for the treatment of mood, motor and cognitive disorders as well as neurological conditions. In most cases, advances have occurred through serendipity, except for Parkinson's disease where the pathophysiology led almost immediately to the introduction of dopamine restoring agents. Extensive neuropharmacological studies first showed that the primary target of antipsychotics, antidepressants, and anxiolytic drugs were specific components of the monoaminergic systems...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27923524/the-therapeutic-potential-of-metabolic-hormones-in-the-treatment-of-age-related-cognitive-decline-and-alzheimer-s-disease
#10
REVIEW
John Grizzanti, Hyoung-Gon Lee, Antoni Camins, Merce Pallas, Gemma Casadesus
Aging leads to a number of physiological alterations, specifically changes in circulating hormone levels, increases in fat deposition, decreases in metabolism, changes in inflammatory responses, and reductions in growth factors. These progressive changes in physiology and metabolism are exacerbated by modern culture and Western diet and give rise to diseases such as obesity, metabolic syndrome, and type 2 (non-insulin-dependent) diabetes (T2D). These age and lifestyle-related metabolic diseases are often accompanied by insulin and leptin resistance, as well as aberrant amylin production and signaling...
December 2016: Nutrition Research
https://www.readbyqxmd.com/read/27920671/proceedings-of-the-fourth-annual-deep-brain-stimulation-think-tank-a-review-of-emerging-issues-and-technologies
#11
Wissam Deeb, James J Giordano, Peter J Rossi, Alon Y Mogilner, Aysegul Gunduz, Jack W Judy, Bryan T Klassen, Christopher R Butson, Craig Van Horne, Damiaan Deny, Darin D Dougherty, David Rowell, Greg A Gerhardt, Gwenn S Smith, Francisco A Ponce, Harrison C Walker, Helen M Bronte-Stewart, Helen S Mayberg, Howard J Chizeck, Jean-Philippe Langevin, Jens Volkmann, Jill L Ostrem, Jonathan B Shute, Joohi Jimenez-Shahed, Kelly D Foote, Aparna Wagle Shukla, Marvin A Rossi, Michael Oh, Michael Pourfar, Paul B Rosenberg, Peter A Silburn, Coralie de Hemptine, Philip A Starr, Timothy Denison, Umer Akbar, Warren M Grill, Michael S Okun
This paper provides an overview of current progress in the technological advances and the use of deep brain stimulation (DBS) to treat neurological and neuropsychiatric disorders, as presented by participants of the Fourth Annual DBS Think Tank, which was convened in March 2016 in conjunction with the Center for Movement Disorders and Neurorestoration at the University of Florida, Gainesveille FL, USA. The Think Tank discussions first focused on policy and advocacy in DBS research and clinical practice, formation of registries, and issues involving the use of DBS in the treatment of Tourette Syndrome...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27911319/autotaxin-is-related-to-metabolic-dysfunction-and-predicts-alzheimer-s-disease-outcomes
#12
Kelsey E McLimans, Auriel A Willette
BACKGROUND: Obesity and insulin resistance are associated with neuropathology and cognitive decline in Alzheimer's disease (AD). OBJECTIVE: Ecto-nucleotide pyrophosphatase/phosphodiesterase 2, also called autotaxin, is produced by beige adipose tissue, regulates metabolism, and is higher in AD prefrontal cortex (PFC). Autotaxin may be a novel biomarker of dysmetabolism and AD. METHODS: We studied Alzheimer's Disease Neuroimaging Initiative participants who were cognitively normal (CN; n = 86) or had mild cognitive impairment (MCI; n = 135) or AD (n = 66)...
December 1, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27863851/long-term-exposition-to-a-high-fat-diet-favors-the-appearance-of-%C3%AE-amyloid-depositions-in-the-brain-of-c57bl-6j-mice-a-potential-model-of-sporadic-alzheimer-s-disease
#13
Oriol Busquets, Miren Ettcheto, Mercè Pallàs, Carlos Beas-Zarate, Ester Verdaguer, Carme Auladell, Jaume Folch, Antoni Camins
AIMS: The sporadic and late-onset form of Alzheimer's disease (AD) constitutes the most common form of dementia. This non-familiar form could be a consequence of metabolic syndrome, characterized by obesity and the development of a brain-specific insulin resistance known as type III diabetes. This work demonstrates the development of a significant AD-like neuropathology due to these metabolic alterations. METHODS: C57BL/6J mice strain were divided into two groups, one fed with a diet rich in palmitic acid (high-fat diet, HFD) since their weaning until 16 months of age, and another group used as a control with a regular diet...
November 15, 2016: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/27846718/-rab-proteins-intracellular-transport-and-cancer
#14
R Černochová, M Nekulová, J Holčaková
BACKGROUND: Rab proteins are small monomeric enzymes which belong to the large Ras protein superfamily and allow hydrolysis of guanosine triphosphate (GTP) to guanosine (GDP). Up to now more than 60 proteins have been described that act primarily as regulators of intracellular transport. Rab GTPases are mostly located at the intracellular membranes, where they provide connections to motor proteins and to the cytoskeleton and control various steps of the traffic pathways including the formation and movement of vesicles or membrane fusion controlling secretion, endocytosis, recycling and degradation of proteins...
December 0: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
https://www.readbyqxmd.com/read/27832290/sorting-receptor-sorla-cellular-mechanisms-and-implications-for-disease
#15
REVIEW
Vanessa Schmidt, Aygul Subkhangulova, Thomas E Willnow
Sorting-related receptor with A-type repeats (SORLA) is an intracellular sorting receptor that directs cargo proteins, such as kinases, phosphatases, and signaling receptors, to their correct location within the cell. The activity of SORLA assures proper function of cells and tissues, and receptor dysfunction is the underlying cause of common human malignancies, including Alzheimer's disease, atherosclerosis, and obesity. Here, we discuss the molecular mechanisms that govern sorting of SORLA and its cargo in multiple cell types, and why genetic defects in this receptor results in devastating diseases...
November 10, 2016: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/27815120/identification-of-lead-small-molecule-inhibitors-of-glycogen-synthase-kinase-3-beta-using-a-fragment-linking-strategy
#16
Jinhee Kim, Yonghoon Moon, Sungwoo Hong
Glycogen synthase kinase-3 beta (GSK3β) kinase serves as a promising therapeutic target for the treatment of various human diseases, such as diabetes, obesity, and Alzheimer's disease. In this study, we report lead GSK3β inhibitors identified using a fragment-linking strategy. Through the systematic exploration, a six-atom chain unit bearing the rigid double bond was found to be a suitable linker connecting two fragments, which enables favorable contacts with backbone groups of residues in the pockets. As a consequence, potent GSK3β inhibitor 9i was found with IC50 values of 19nM...
October 22, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27802235/mitochondrial-abnormalities-and-synaptic-loss-underlie-memory-deficits-seen-in-mouse-models-of-obesity-and-alzheimer-s-disease
#17
Isaura V A Martins, Jack Rivers-Auty, Stuart M Allan, Catherine B Lawrence
Obesity is associated with impaired memory in humans, and obesity induced by high-fat diets leads to cognitive deficits in rodents and in mouse models of Alzheimer's disease (AD). However, it remains unclear how high-fat diets contribute to memory impairment. Therefore, we tested the effect of a high-fat diet on memory in male and female control non-transgenic (Non-Tg) and triple-transgenic AD (3xTgAD) mice and determined if a high-fat diet caused similar ultrastructural abnormalities to those observed in AD...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27796748/relationship-between-obesity-alzheimer-s-disease-and-parkinson-s-disease-an-astrocentric-view
#18
REVIEW
Cynthia Alexandra Martin-Jiménez, Diana Milena Gaitán-Vaca, Valentina Echeverria, Janneth González, George E Barreto
Obesity is considered one of the greatest risk to human health and is associated with several factors including genetic components, diet, and physical inactivity. Recently, the relationship between obesity and numerous progressive and aging-related neurodegenerative diseases such as Parkinson's disease (PD) and Alzheimer's disease (AD) have been observed. Thus, the involvement of the most abundant and heterogeneous group of glial cells in neurodegenerative diseases, the astrocytes, is caused by a combination of the failure on their normal homeostatic functions and the increase of toxic metabolites upon pathological event...
October 28, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27793638/tau-hyperphosphorylation-in-the-brain-of-ob-ob-mice-is-due-to-hypothermia-importance-of-thermoregulation-in-linking-diabetes-and-alzheimer-s-disease
#19
Maud Gratuze, Noura B El Khoury, Andréanne Turgeon, Carl Julien, François Marcouiller, Françoise Morin, Robert A Whittington, André Marette, Frédéric Calon, Emmanuel Planel
Over the last few decades, there has been a significant increase in epidemiological studies suggesting that type 2 diabetes (T2DM) is linked to a higher risk of Alzheimer's disease (AD). However, how T2DM affects AD pathology, such as tau hyperphosphorylation, is not well understood. In this study, we investigated the impact of T2DM on tau phosphorylation in ob/ob mice, a spontaneous genetic model of T2DM. Tau phosphorylation at the AT8 epitope was slightly elevated in 4-week-old ob/ob mice while 26-week-old ob/ob mice exhibited tau hyperphosphorylation at multiple tau phospho-epitopes (Tau1, CP13, AT8, AT180, PHF1)...
February 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/27789118/adverse-structural-and-functional-effects-of-marijuana-on-the-brain-evidence-reviewed
#20
REVIEW
David E Mandelbaum, Suzanne M de la Monte
The growing use and legalization of cannabis are leading to increased exposures across all age groups, including in adolescence. The touting of its medicinal values stems from anecdotal reports related to treatment of a broad range of illnesses including epilepsy, multiple sclerosis, muscle spasms, arthritis, obesity, cancer, Alzheimer disease, Parkinson disease, post-traumatic stress, inflammatory bowel disease, and anxiety. However, anecdotal data and the high level of interest in this treatment must not obscure objective assessments of any potential and realized short- and long-term adverse effects of cannabis, particularly with respect to age of onset and chronicity of exposure...
January 2017: Pediatric Neurology
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