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Microbiota and diabetes

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https://www.readbyqxmd.com/read/28524868/diabetes-associated-microbiota-in-fa-fa-rats-is-modified-by-roux-en-y-gastric-bypass
#1
Tulika Arora, Florian Seyfried, Neil G Docherty, Valentina Tremaroli, Carel W le Roux, Rosie Perkins, Fredrik Bäckhed
Roux-en-Y gastric bypass (RYGB) and duodenal jejunal bypass (DJB), two different forms of bariatric surgery, are associated with improved glucose tolerance, but it is not clear whether the gut microbiota contributes to this effect. Here we used fa/fa rats as a model of impaired glucose tolerance to investigate whether (i) the microbiota varies between fa/fa and nondiabetic fa/+ rats; (ii) the microbiota of fa/fa rats is affected by RYGB and/or DJB; and (iii) surgically induced microbiota alterations contribute to glucose metabolism...
May 19, 2017: ISME Journal
https://www.readbyqxmd.com/read/28511646/emergence-of-microbial-diversity-due-to-cross-feeding-interactions-in-a-spatial-model-of-gut-microbial-metabolism
#2
Milan J A van Hoek, Roeland M H Merks
BACKGROUND: The human gut contains approximately 10(14) bacteria, belonging to hundreds of different species. Together, these microbial species form a complex food web that can break down nutrient sources that our own digestive enzymes cannot handle, including complex polysaccharides, producing short chain fatty acids and additional metabolites, e.g., vitamin K. Microbial diversity is important for colonic health: Changes in the composition of the microbiota have been associated with inflammatory bowel disease, diabetes, obesity and Crohn's disease, and make the microbiota more vulnerable to infestation by harmful species, e...
May 16, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28504618/butyrate-reduces-high-fat-diet-induced-metabolic-alterations-hepatic-steatosis-and-pancreatic-beta-cell-and-intestinal-barrier-dysfunctions-in-prediabetic-mice
#3
V A Matheus, Lcs Monteiro, R B Oliveira, D A Maschio, C B Collares-Buzato
In this study, we investigated the effect of diet supplementation with sodium butyrate (5% w/w), a short-chain fatty acid produced by the intestinal microbiota, on metabolic parameters, body adiposity, hepatic and pancreatic lipid accumulation, beta cell function/mass as well as on the structure and function of the tight junction-mediated intestinal epithelial barrier in both normal and obese/prediabetic C57 mice fed a regular (control) or high-fat diet for 60 days, respectively. Butyrate treatment significantly inhibited all the high-fat-induced metabolic dysfunctions evaluated, i...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28504567/effects-of-lactobacillus-casei-ccfm419-on-insulin-resistance-and-gut-microbiota-in-type-2-diabetic-mice
#4
X Li, E Wang, B Yin, D Fang, P Chen, G Wang, J Zhao, H Zhang, W Chen
The antidiabetic effect of Lactobacillus is increasingly recognized worldwide. In this research, the hypoglycemic activity of Lactobacillus casei CCFM419 was investigated in mice with high-fat and low-dose streptozotocin induced type 2 diabetes. Oral L. casei CCFM419 administration favourably regulated blood glucose balance, increased glucose tolerance and protected islets in the diabetic mice, accompanied by an improvement in lipid metabolism. The homeostasis model of insulin resistance, insulin level and insulin tolerance test and mRNA expression of PI3K/Akt signalling pathway indexes revealed that L...
May 15, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28496408/the-impact-of-microbiota-gut-brain-axis-on-diabetic-cognition-impairment
#5
REVIEW
Youhua Xu, Hua Zhou, Quan Zhu
Progressive cognitive dysfunction is a central characteristic of diabetic encephalopathy (DE). With an aging population, the incidence of DE is rising and it has become a major threat that seriously affects public health. Studies within this decade have indicated the important role of risk factors such as oxidative stress and inflammation on the development of cognitive impairment. With the recognition of the two-way communication between gut and brain, recent investigation suggests that "microbiota-gut-brain axis" also plays a pivotal role in modulating both cognition function and endocrine stability...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28495997/extracellular-vesicles-in-metabolic-syndrome
#6
REVIEW
M Carmen Martínez, Ramaroson Andriantsitohaina
Metabolic syndrome defines a cluster of interrelated risk factors for cardiovascular disease and diabetes mellitus. These factors include metabolic abnormalities, such as hyperglycemia, elevated triglyceride levels, low high-density lipoprotein cholesterol levels, high blood pressure, and obesity, mainly central adiposity. In this context, extracellular vesicles (EVs) may represent novel effectors that might help to elucidate disease-specific pathways in metabolic disease. Indeed, EVs (a terminology that encompasses microparticles, exosomes, and apoptotic bodies) are emerging as a novel mean of cell-to-cell communication in physiology and pathology because they represent a new way to convey fundamental information between cells...
May 12, 2017: Circulation Research
https://www.readbyqxmd.com/read/28488210/food-additives-contaminants-and-other-minor-components-effects-on-human-gut-microbiota-a-review
#7
REVIEW
Paula Roca-Saavedra, Veronica Mendez-Vilabrille, Jose Manuel Miranda, Carolina Nebot, Alejandra Cardelle-Cobas, Carlos M Franco, Alberto Cepeda
Gut bacteria play an important role in several metabolic processes and human diseases, such as obesity and accompanying co-morbidities, such as fatty liver disease, insulin resistance/diabetes, and cardiovascular events. Among other factors, dietary patterns, probiotics, prebiotics, synbiotics, antibiotics, and non-dietary factors, such as stress, age, exercise, and climatic conditions, can dramatically impact the human gut microbiota equilibrium and diversity. However, the effect of minor food constituents, including food additives and trace contaminants, on human gut microbiota has received less attention...
May 9, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28470190/corrigendum-disentangling-type-2-diabetes-and-metformin-treatment-signatures-in-the-human-gut-microbiota
#8
Kristoffer Forslund, Falk Hildebrand, Trine Nielsen, Gwen Falony, Emmanuelle Le Chatelier, Shinichi Sunagawa, Edi Prifti, Sara Vieira-Silva, Valborg Gudmundsdottir, Helle Krogh Pedersen, Manimozhiyan Arumugam, Karsten Kristiansen, Anita Yvonne Voigt, Henrik Vestergaard, Rajna Hercog, Paul Igor Costea, Jens Roat Kultima, Junhua Li, Torben Jørgensen, Florence Levenez, Joël Dore, H Bjørn Nielsen, Søren Brunak, Jeroen Raes, Torben Hansen, Jun Wang, S Dusko Ehrlich, Peer Bork, Oluf Pedersen
No abstract text is available yet for this article.
May 3, 2017: Nature
https://www.readbyqxmd.com/read/28467926/a-specific-gut-microbiota-dysbiosis-of-type-2-diabetic-mice-induces-glp-1-resistance-through-an-enteric-no-dependent-and-gut-brain-axis-mechanism
#9
Estelle Grasset, Anthony Puel, Julie Charpentier, Xavier Collet, Jeffrey E Christensen, François Tercé, Rémy Burcelin
Glucagon-like peptide-1 (GLP-1)-based therapies control glycemia in type 2 diabetic (T2D) patients. However, in some patients the treatment must be discontinued, defining a state of GLP-1 resistance. In animal models we identified a specific set of ileum bacteria impairing the GLP-1-activated gut-brain axis for the control of insulin secretion and gastric emptying. Using prediction algorithms, we identified bacterial pathways related to amino acid metabolism and transport system modules associated to GLP-1 resistance...
May 2, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28450222/probiotic-treatment-protects-against-the-pro-depressant-like-effect-of-high-fat-diet-in-flinders-sensitive-line-rats
#10
Anders Abildgaard, Betina Elfving, Marianne Hokland, Sten Lund, Gregers Wegener
Major depressive disorder (MDD) is highly associated with dysmetabolic conditions, such as obesity and diabetes mellitus type 2, and the gut microbiota may interact with both disease entities. We have previously shown that a high-fat diet (HFD) exacerbated depressive-like behaviour uniquely in Flinders Sensitive Line (FSL) rats that inherently present with an increased level of depressive-like behaviour compared with Flinders Resistant Line (FRL) rats. We therefore investigated whether multispecies probiotics possessed anti-depressant-like effect in FSL rats or protected against the pro-depressant-like effect of HFD...
April 24, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28446519/cationic-polystyrene-resolves-nonalcoholic-steatohepatitis-nash-obesity-and-metabolic-disorders-by-promoting-eubiosis-of-gut-microbiota-and-decreasing-endotoxemia
#11
Airu Zhu, Jingjing Chen, Pengfei Wu, Mei Luo, Yilan Zeng, Han Zheng, Li Zhang, Zishou Cheng, Qun Sun, Wenwen Li, Yixiang Duan, Danmei Su, Zhixiong Xiao, Zhongping Duan, Sujun Zheng, Li Bei, Xiaohui Zhang, Zhongyuan Ju, Richard Hu, Stephen J Pandol, Yuan-Ping Han
A pandemic of metabolic diseases, consisting of type-2 diabetes, non-alcoholic fatty liver diseases (NAFLD) and obesity, has imposed critical challenges for societies worldwide, prompting investigation of underlying mechanisms and exploration of low cost and effective treatment. In this report, we demonstrate that metabolic disorders in mice generated by feeding with a high-fat diet without dietary vitamin D (HD) can be prevented by oral administration of polycationic amine resin. Oral administration of cholestyramine , but not the control uncharged polystyrene, was able to sequester negatively charged bacterial endotoxin in the gut, leading to (1) reducing plasma endotoxin levels, (2) resolving systemic inflammation and hepatic steatohepatitis,and (3) improving insulin sensitivity...
April 26, 2017: Diabetes
https://www.readbyqxmd.com/read/28444346/resistant-starch-as-a-novel-dietary-strategy-to-maintain-kidney-health-in-diabetes-mellitus
#12
Gar Yee Koh, Matthew J Rowling
The worldwide prevalence of diabetes mellitus is expected to reach 439 million by 2030. Diabetes increases the risk for developing secondary complications such as nephropathy and cardiovascular disease, critical factors that dictate the survival rate of diabetes patients. Compelling evidence has indicated that the positive impact of fermentable carbohydrates in obesity-related diabetes is mediated by the production of short-chain fatty acids and the modulation of colonic microbiota. This review summarizes the potential implications of dietary resistant starch, a class of fermentable fiber, in glucose homeostasis and kidney health in obesity-associated diabetes and examines the mechanisms underlying the protective effect of resistant starch...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28444216/dietary-metabolites-derived-from-gut-microbiota-critical-modulators-of-epigenetic-changes-in-mammals
#13
Mohd Iqbal Bhat, Rajeev Kapila
The mammalian gastrointestinal tract harbors trillions of commensal microorganisms, collectively known as the microbiota. The microbiota is a critical source of environmental stimuli and, thus, has a tremendous impact on the health of the host. The microbes within the microbiota regulate homeostasis within the gut, and any alteration in their composition can lead to disorders that include inflammatory bowel disease, allergy, autoimmune disease, diabetes, mental disorders, and cancer. Hence, restoration of the gut flora following changes or imbalance is imperative for the host...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28436760/diabetes-management-by-probiotics-current-knowledge-and-future-pespective
#14
Aziz Homayouni-Rad, Ahmad-Reza Soroush, Leila Khalili, Leila Norouzi-Panahi, Zahra Kasaie, Hanieh-Sadat Ejtahed
Diabetes mellitus, a multifactorial disorder, is related to the intestinal microbiota via numerous molecular mechanisms. The vast increase in the prevalence of diabetes and its associated complications requires a natural and safe solution. There is a growing evidence of gut microbiota effi ciency in improving insulin resistance, impaired insulin secretion, and metabolic complications in diabetic patients. Probiotics are defi ned as live microorganisms that, when ingested in adequate amounts, exert health benefi ts to the host...
April 24, 2017: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
https://www.readbyqxmd.com/read/28434196/role-of-gut-microbiota-bile-acids-and-their-crosstalk-in-the-effects-of-bariatric-surgery-on-obesity-and-type-2-diabetes
#15
Haijun Liu, Cheng Hu, Xueli Zhang, Weiping Jia
Type 2 diabetes mellitus is becoming increasingly prevalent worldwide and has become one of the greatest threats to global health. Bariatric surgery was initially designed to achieve weight loss and subsequently was noted to induce improvements or remission of type 2 diabetes. Currently, these bariatric operations such as Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) are the most effective procedures for the treatment of obesity and type 2 diabetes mellitus worldwide. However, the specific mechanism mediating the beneficial effects of metabolic surgery has remained largely unknown...
April 23, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28434033/the-gut-microbiome-as-a-target-for-prevention-and-treatment-of-hyperglycaemia-in-type-2-diabetes-from-current-human-evidence-to-future-possibilities
#16
REVIEW
Louise Brunkwall, Marju Orho-Melander
The totality of microbial genomes in the gut exceeds the size of the human genome, having around 500-fold more genes that importantly complement our coding potential. Microbial genes are essential for key metabolic processes, such as the breakdown of indigestible dietary fibres to short-chain fatty acids, biosynthesis of amino acids and vitamins, and production of neurotransmitters and hormones. During the last decade, evidence has accumulated to support a role for gut microbiota (analysed from faecal samples) in glycaemic control and type 2 diabetes...
April 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28432876/effect-of-pistachio-consumption-on-the-modulation-of-urinary-gut-microbiota-related-metabolites-in-prediabetic-subjects
#17
Pablo Hernández-Alonso, Daniel Cañueto, Simona Giardina, Jordi Salas-Salvadó, Nicolau Cañellas, Xavier Correig, Mònica Bulló
The specific nutritional composition of nuts could affect different metabolic pathways involved in a broad range of metabolic diseases. We therefore investigated whether chronic consumption of pistachio nuts modifies the urine metabolome in prediabetic subjects. We designed a randomized crossover clinical trial in 39 prediabetic subjects. They consumed a pistachio-supplemented diet (PD, 50% carbohydrates, 33% fat, including 57 g/d of pistachios daily) and a control diet (CD, 55% carbohydrates, 30% fat) for 4 months each, separated by a 2-week wash-out...
April 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28429701/-microbiota-and-metabolic-syndrome
#18
Yüksel Altuntaş, Adnan Batman
The role of gut bacteria in the pathogenesis and treatment of various diseases has been a focus of attention in the last 10 years. Prevalence of diabetes, obesity, and cardiovascular diseases continues to increase, in spite of technological developments and treatment alternatives. Microbial dysbiosis, described as the decrease of useful bacteria and the increase of harmful bacteria, has been associated with diabetes, obesity, atherosclerosis, and metabolic syndrome. In microbial dysbiosis, increase of harmful metabolites and changes to composition of bile acids occur via carbohydrate and protein fermentation...
April 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28425154/rifaximin-in-non-alcoholic-steatohepatitis-an-open-label-pilot-study
#19
Jeremy F L Cobbold, Stephen Atkinson, Julian R Marchesi, Ann Smith, Sann N Wai, Julie Stove, Fariba Shojaee-Moradie, Nicola Jackson, A Margot Umpleby, Julie Fitzpatrick, E Louise Thomas, Jimmy D Bell, Elaine Holmes, Simon D Taylor-Robinson, Robert D Goldin, Michael S Yee, Quentin M Anstee, Mark R Thursz
AIM: Gut microbial dysbiosis is implicated in the pathogenesis of non-alcoholic steatohepatitis (NASH). We investigated downstream effects of gut microbiota modulation on markers of hepatic inflammation, steatosis, and hepatic and peripheral insulin sensitivity in patients with NASH using Rifaximin therapy. METHODS: Patients with biopsy-proven NASH and elevated aminotransferase values were included in this open-label pilot study, all receiving 6 weeks Rifaximin 400 mg twice daily, followed by a 6 week observation period...
April 20, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28422177/microbiota-diet-can-protect-against-type-1-diabetes
#20
Elisabeth Kugelberg
No abstract text is available yet for this article.
May 2017: Nature Reviews. Immunology
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