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diabetic neural changes

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https://www.readbyqxmd.com/read/29141105/the-feasibility-of-intraperitoneal-placenta-derived-mesenchymal-stem-cell-injection-in-stomachs-of-diabetic-mice
#1
Jong Min Park, Sang Hwan Lee, Kwang Il Kim, Won Hee Kim, Joo Young Cho, Ki Baik Hahm, Sung Pyo Hong
BACKGROUND/AIMS: Diabetic gastropathy is associated with loss of Interstitial cells of Cajal (ICCs) and autonomic neuropathy. Effective management for diabetic gastropathy is still unavailable. This study was aimed to confirm the pathogenetic changes in diabetic gastropathy and to examine the effect of treatment with placental derived mesenchymal stem cells (PDMSCs) in stomachs of animal models. METHODS: Fourteen NOD/ShiLtJ mice of 8 weeks were bled until week 30...
November 15, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29120924/potential-mechanisms-underlying-the-effect-of-bariatric-surgery-on-eating-behaviour
#2
Roxanna Zakeri, Rachel L Batterham
PURPOSE OF REVIEW: Reduced energy intake, resulting from favourable changes in eating behaviour, is the predominant driver of weight loss following bariatric surgery. Here we review the most recent studies examining the impact of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy, the two most common bariatric procedures, upon eating behaviour and the suggested underlying biological mechanisms. RECENT FINDINGS: Following RYGB or sleeve gastrectomy, most people report subjective changes in appetite, taste and food preference, with decreased high-fat preference most commonly reported...
November 7, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29098550/enteric-glial-dysfunction-evoked-by-apolipoprotein-e-deficiency-contributes-to-delayed-gastric-emptying
#3
Seiichiro Fukuhara, Tatsuhiro Masaoka, Soraya Nishimura, Masaya Nakamura, Juntaro Matsuzaki, Hitoshi Tsugawa, Sawako Miyoshi, Hideki Mori, Satoshi Kawase, Shinsuke Shibata, Hideyuki Okano, Takanori Kanai, Hidekazu Suzuki
BACKGROUND AND AIM: Diabetes is the main cause of gastroparesis accompanying decreased neuronal nitric oxide synthase (nNOS) in myenteric ganglia of the stomach. Decreased nNOS expression in the stomach also results from defects in apolipoprotein E (ApoE), which is secreted by astrocytes and has neuroprotective effects on the central nervous system. However, the roles of ApoE and enteric glial cells on gastric motility are uncertain. In this study, ApoE and enteric glial cell alterations in gastroparesis were investigated...
December 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29081148/-follow-up-of-resting-state-brain-function-with-magnetic-resonance-imaging-in-patients-with-type-2-diabetes-mellitus
#4
N Qi, Y Cui, J C Liu, M Yu, G J Teng
Objective: To investigate the changes of resting brain function with time in patients with type 2 diabetes mellitus (T2DM) by using regional homogeneity (ReHo) with resting-state functional magnetic resonance imaging (rs-fMRI). Methods: Multidimensional cognitive function tests and rs-fMRI scans were performed in 21 T2DM patients and 12 healthy controls in 2012 and 2015 respectively.The differences in clinical variables and the ReHo values before and after were measured by paired sample t test, and the correlation between the change of ReHo value and the change of clinical variables was measured by Pearson correlation analysis based on voxel...
October 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29065411/gut-microbiota-and-host-metabolism-what-relationship
#5
Gilles Mithieux
A large number of genomic studies have reported associations between the gut microbiota composition and metabolic diseases such as obesity or type 2 diabetes. This led to the widespread idea that a causal relationship could exist between intestinal microbiota and metabolic diseases. At odds with this idea, some compelling studies reported that global changes in microbiota composition have no effect on the host metabolism in obese mice or humans. However, specific bacteria are able to confer host metabolic benefits, such as Akkermansia muciniphila or Prevotella copri, when they are given by gavage in obese mice...
October 24, 2017: Neuroendocrinology
https://www.readbyqxmd.com/read/29049850/-epigenetic-control-of-early-neurodegenerative-events-in-diabetic-retinopathy-by-the-histone-deacetylase-sirt6
#6
María A Zorrilla-Zubilete, Ada Yeste, Francisco J Quintana, Debra Toiber, Raul Mostoslavsky, Dafne M Silberman
Diabetic retinopathy (DR) is one of the common complications associated with diabetes mellitus (DM) and the leading cause of blindness worldwide. Recent research has demonstrated that DR is not only a microvascular disease but may be a result of neurodegenerative processes. Moreover, glucose-induced neuron and glial cell damage may occur shortly after the onset of diabetes which makes the disease hard to diagnose at early stages. SIRT6, a NAD-dependent sirtuin deacylase, modulates aging, energy metabolism and neurodegeneration...
October 19, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28988945/neurodegeneration-in-diabetic-retinopathy-potential-for-novel-therapies
#7
Alistair J Barber, Basma Baccouche
The complex pathology of diabetic retinopathy (DR) affects both vascular and neural tissue. The characteristics of neurodegeneration are well-described in animal models but have more recently been confirmed in the clinical setting, mostly by using non-invasive imaging approaches such as spectral domain optical coherence tomography (SD-OCT). The most frequent observations report loss of tissue in the nerve fiber layer and inner plexiform layer, confirming earlier findings from animal models. In several cases the reduction in inner retinal layers is reported in patients with little evidence of vascular lesions or macular edema, suggesting that degenerative loss of neural tissue in the inner retina can occur after relatively short durations of diabetes...
October 14, 2017: Vision Research
https://www.readbyqxmd.com/read/28972183/the-actin-related-p41arc-subunit-contributes-to-p21-activated-kinase-1-pak1-mediated-glucose-uptake-into-skeletal-muscle-cells
#8
Ragadeepthi Tunduguru, Jing Zhang, Arianne Aslamy, Vishal A Salunkhe, Joseph T Brozinick, Jeffrey S Elmendorf, Debbie C Thurmond
Defects in translocation of the glucose transporter GLUT4 are associated with peripheral insulin resistance, pre-clinical diabetes, and progression to type 2 diabetes. GLUT4 recruitment to the plasma membrane of skeletal muscle cells requires filamentous (F)-actin remodeling. Insulin signaling in muscle requires p21-activated kinase-1 (PAK1), whose downstream signaling triggers actin remodeling that promotes GLUT4 vesicle translocation and glucose uptake into skeletal muscle cells. Actin remodeling is a cyclic process, and while PAK1 is known to initiate changes to the cortical actin-binding protein cofilin to stimulate the depolymerizing arm of the cycle, how PAK1 might trigger the polymerizing arm of the cycle remains unresolved...
September 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28965983/mitochondrial-targeted-therapies-where-do-we-stand-in-mental-disorders
#9
REVIEW
Dorit Ben-Shachar, Hila M Ene
The neurobiology of psychiatric disorders is still unclear, although changes in multiple neuronal systems, specifically the dopaminergic, glutamatergic, and gamma-aminobutyric acidergic systems as well as abnormalities in synaptic plasticity and neural connectivity, are currently suggested to underlie their pathophysiology. A growing body of evidence suggests multifaceted mitochondrial dysfunction in mental disorders, which is in line with their role in neuronal activity, growth, development, and plasticity...
August 15, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28964868/the-neuroprotective-role-of-rosiglitazone-in-advanced-glycation-end-product-treated-human-neural-stem-cells-is-ppargamma-dependent
#10
Ming-Chang Chiang, Yi-Chuan Cheng, Christopher J Nicol, Chien-Hung Lin
Hyperglycemia is accompanied by an accelerated formation rate of advanced glycation end products (AGEs), which is associated with the pathogenesis of diabetic neuronal deficits. Peroxisome proliferator-activated receptor gamma (PPARγ) belongs to a family of ligand-activated nuclear receptors and its ligands are known to control many physiological, pathological and inflammatory pathways. Weinvestigated the hypothesis that the PPARγ agonist (rosiglitazone) would abrogate AGEs-mediated neurotoxic effects on human neural stem cells (hNSCs), by whichAGEs may play a role in diabetic-related neuronal impairment...
September 28, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28944718/obesity-is-associated-with-altered-mid-insula-functional-connectivity-to-limbic-regions-underlying-appetitive-responses-to-foods
#11
Jason A Avery, Joshua N Powell, Florence J Breslin, Rebecca J Lepping, Laura E Martin, Trisha M Patrician, Joseph E Donnelly, Cary R Savage, W Kyle Simmons
Obesity is fundamentally a disorder of energy balance. In obese individuals, more energy is consumed than is expended, leading to excessive weight gain through the accumulation of adipose tissue. Complications arising from obesity, including cardiovascular disease, elevated peripheral inflammation, and the development of Type II diabetes, make obesity one of the leading preventable causes of morbidity and mortality. Thus, it is of paramount importance to both individual and public health that we understand the neural circuitry underlying the behavioral regulation of energy balance...
September 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28926876/-advances-in-the-research-of-characteristics-and-treatment-of-burns-in-the-elderly
#12
R Liu, Z Y Li
With the development of society and the improvement of medical level, the average life span of human has been increasing year by year. The proportion of elderly burn patients is also increasing yearly, which has become a social problem that can not be ignored. Because of physiological characteristics, such as decreased function of heart, lung, and kidney, degenerative changes of neural system, reduced gastrointestinal function and immunological function, and mostly accompanied by primary diseases of diabetes and cardiovascular diseases, elderly burn patients suffer from high shock rate and mortality, and their wounds are not easy to heal...
September 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28902411/functional-changes-in-the-neural-retina-occur-in-the-absence-of-mitochondrial-dysfunction-in-a-rodent-model-of-diabetic-retinopathy
#13
Dustin R Masser, Laura Otalora, Nicholas W Clark, Michael T Kinter, Michael H Elliott, Willard M Freeman
Diabetic retinopathy is a neurovascular diabetes complication resulting in vision loss. A wealth of literature reports retinal molecular changes indicative of neural deficits, inflammation, and vascular leakage with chronic diabetes, but the mechanistic causes of disease initiation and progression are unknown. Microvascular mitochondrial DNA (mtDNA) damage leading to mitochondrial dysfunction has been proposed to drive vascular dysfunction in retinopathy. However, growing evidence suggests that neural retina dysfunction precedes and may cause vascular damage...
December 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28882554/the-impact-of-androgen-actions-in-neurons-on-metabolic-health-and-disease
#14
REVIEW
Jamie J Morford, Sheng Wu, Franck Mauvais-Jarvis
The male hormone testosterone exerts different effects on glucose and energy homeostasis in males and females. Testosterone deficiency predisposes males to visceral obesity, insulin resistance and type 2 diabetes. However, testosterone excess predisposes females to similar metabolic dysfunction. Here, we review the effects of testosterone actions in the central nervous system on metabolic function in males and females. In particular, we highlight changes within the hypothalamus that control glucose and energy homeostasis...
September 4, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28860463/decision-making-in-primary-onset-middle-age-type-2-diabetes-mellitus-a-bold-fmri-study
#15
Dan-Miao Sun, Ye Ma, Zong-Bo Sun, Lei Xie, Jin-Zhuang Huang, Wei-Song Chen, Shou-Xing Duan, Zhi-Rong Lin, Rui-Wei Guo, Hong-Bo Le, Wen-Can Xu, Shu-Hua Ma
Although type 2 diabetes mellitus (T2DM) is a well-recognized risk factor for dementia, the neural mechanisms that underlying cognitive impairment in T2DM remain unclear. We used functional magnetic resonance imaging (fMRI) during a computerized version of the Iowa Gambling Task to investigate the neural basis of decision making at the initial onset stage of T2DM. Eighteen newly diagnosed middle-aged T2DM patients, with no previous diabetic treatment history, and 18 matched controls were recruited. Results indicated that T2DM patients made more disadvantageous decisions than controls...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28855790/safety-of-lower-extremity-neurodynamic-exercises-in-adults-with-diabetes-mellitus-a-feasibility-study
#16
Benjamin S Boyd, Robert J Nee, Betty Smoot
OBJECTIVES: Neurodynamic exercises aim to improve neural mechanosensitivity in order to promote pain-free movement and function. People with diabetes mellitus (DM) may be candidates for neurodynamic exercises to address common DM-related impairments such as reduced lower extremity range of motion (ROM) and altered neural mechanosensitivity. However, no studies have examined the safety and immediate effects of neurodynamic exercise in people with DM. This study aims to determine the feasibility of applying neurodynamic exercises in adults with DM by evaluating the rate of adverse events and quantifying immediate changes in straight leg raise (SLR) ROM...
February 2017: Journal of Manual & Manipulative Therapy
https://www.readbyqxmd.com/read/28852393/adult-neural-stem-cell-dysfunction-in-the-subventricular-zone-of-the-lateral-ventricle-leads-to-diabetic-olfactory-defects
#17
Yu-Hong Jing, Chu-Chu Qi, Li Yuan, Xiang-Wen Liu, Li-Ping Gao, Jie Yin
Sensitive smell discrimination is based on structural plasticity of the olfactory bulb, which depends on migration and integration of newborn neurons from the subventricular zone. In this study, we examined the relationship between neural stem cell status in the subventricular zone and olfactory function in rats with diabetes mellitus. Streptozotocin was injected through the femoral vein to induce type 1 diabetes mellitus in Sprague-Dawley rats. Two months after injection, olfactory sensitivity was decreased in diabetic rats...
July 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28836097/animal-models-of-diabetic-retinopathy
#18
REVIEW
Ana Maria Olivares, Kristen Althoff, Gloria Fanghua Chen, Siqi Wu, Margaux A Morrisson, Margaret M DeAngelis, Neena Haider
PURPOSE OF REVIEW: Diabetic retinopathy (DR) is one of the most common complications associated with chronic hyperglycemia seen in patients with diabetes mellitus. While many facets of DR are still not fully understood, animal studies have contributed significantly to understanding the etiology and progression of human DR. This review provides a comprehensive discussion of the induced and genetic DR models in different species and the advantages and disadvantages of each model. RECENT FINDINGS: Rodents are the most commonly used models, though dogs develop the most similar morphological retinal lesions as those seen in humans, and pigs and zebrafish have similar vasculature and retinal structures to humans...
August 24, 2017: Current Diabetes Reports
https://www.readbyqxmd.com/read/28834571/the-impact-of-ageing-fasting-and-high-fat-diet-on-central-and-peripheral-glucose-tolerance-and-glucose-sensing-neural-networks-in-the-arcuate-nucleus
#19
M van den Top, F-Y Zhao, R Viriyapong, N J Michael, A C Munder, J T Pryor, L P Renaud, D Spanswick
Obesity and ageing are risk factors for diabetes. In the present study, we investigated the effects of ageing, obesity and fasting on central and peripheral glucose tolerance and on glucose-sensing neuronal function in the arcuate nucleus of rats, with a view to providing insight into the central mechanisms regulating glucose homeostasis and how they change or are subject to dysfunction with ageing and obesity. We show that, following a glucose load, central glucose tolerance at the level of the cerebrospinal fluid (CSF) and plasma is significantly reduced in rats maintained on a high-fat diet (HFD)...
October 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28821394/activation-of-ampk-is-neuroprotective-in-the-oxidative-stress-by-advanced-glycosylation-end-products-in-human-neural-stem-cells
#20
Chien-Hung Lin, Yi-Chuan Cheng, Christopher J Nicol, Kuan-Hung Lin, Chia-Hui Yen, Ming-Chang Chiang
Advanced glycosylation end products (AGEs) formation is correlated with the pathogenesis of diabetic neuronal damage, but its links with oxidative stress are still not well understood. Metformin, one of the most widely used anti-diabetic drugs, exerts its effects in part by activation of AMP-activated protein kinase (AMPK). Once activated, AMPK regulates many pathways central to metabolism and energy balance including, glucose uptake, glycolysis and fatty acid oxidation. AMPK is also present in neurons, but its role remains unclear...
October 15, 2017: Experimental Cell Research
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