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Microbiota and diabetes

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https://www.readbyqxmd.com/read/28829397/precision-nutrition-a-review-of-personalized-nutritional-approaches-for-the-prevention-and-management-of-metabolic-syndrome
#1
REVIEW
Juan de Toro-Martín, Benoit J Arsenault, Jean-Pierre Després, Marie-Claude Vohl
The translation of the growing increase of findings emerging from basic nutritional science into meaningful and clinically relevant dietary advices represents nowadays one of the main challenges of clinical nutrition. From nutrigenomics to deep phenotyping, many factors need to be taken into account in designing personalized and unbiased nutritional solutions for individuals or population sub-groups. Likewise, a concerted effort among basic, clinical scientists and health professionals will be needed to establish a comprehensive framework allowing the implementation of these new findings at the population level...
August 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28822177/-berberine-regulates-type-2-diabetes-mellitus-related-with-insulin-resistance
#2
REVIEW
Cheng Li, Jin-Zhi He, Xue-Dong Zhou, Xin Xu
Insulin resistance (IR) is defined as a series of clinical manifestations for diminished effectiveness of insulin in lowering blood sugar levels caused by decreased sensitivity to insulin of liver, muscle and adipose tissue. IR is the major contributor to the etiology and pathogenesis of type 2 diabetes mellitus (T2DM). Berberine, a traditional Chinese herb extract, has been shown to be safe and effective in lowering blood sugar, alleviating insulin resistance and moderating type 2 diabetes mellitus and its complications...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28818268/-metformin-resistant-folic-acid-producing-probiotics-or-folic-acid-against-metformin-s-adverse-effects-like-diarrhea
#3
Abdullah Olgun
Metformin, first line medication in the treatment of type2 diabetes by millions of patients worldwide, causes gastrointestinal adverse effects (i.e. diarrhea) in approximately 30% of patients, frequently leading to discontinuation. Interestingly, metformin was reported to increase life span in a microscopic worm, Caenorhabditis elegans, by decreasing folate and methionine production of bacteria that this worm uses as a food source. Metformin can be expected to have a similar effect on some microorganisms of human gut microbiota...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28818264/the-potential-management-of-oral-candidiasis-using-anti-biofilm-therapies
#4
Warren Chanda, Thomson P Joseph, Wendong Wang, Arshad A Padhiar, Mintao Zhong
Candida albicans is a minor component of the oral microbiota and an opportunistic pathogen that takes advantage of the immunocompromised host and causes oral mucositis and oral candidiasis. This organism is able to undergo phenotypic modification from a yeast to hyphae growth phase, one of the key arsenals for immune cell evasion, tissue invasion and biofilm formation. The latter property coupled with overgrowth and immune compromising factors such as HIV/AIDS, cancer treatments, organ transplantation, diabetes, corticosteroid use, dentures, and broad-spectrum antibiotic use have modified the fungus from a normal component of the microflora to a foe of an oral cavity and resulting in reduced sensitivity towards commonly utilised antifungal agents...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28815303/effect-of-barley-supplementation-on-the-fecal-microbiota-caecal-biochemistry-and-key-biomarkers-of-obesity-and-inflammation-in-obese-db-db-mice
#5
Jose F Garcia-Mazcorro, David A Mills, Kevin Murphy, Giuliana Noratto
PURPOSE: Barley is a low-glycemic index grain that can help diabetic and obese patients. The effect of barley intake depends on the host and the associated gut microbiota. This study investigated the effect of barley intake on the fecal microbiota, caecal biochemistry, and key biomarkers of obesity and inflammation. METHODS: Obese db/db mice were fed diets with and without barley during 8 weeks; lean mice were used as lean controls. Fecal microbiota was evaluated using 16S marker gene sequencing in a MiSeq instrument; several markers of caecal biochemistry, obesity, and inflammation were also evaluated using standard techniques...
August 16, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28814977/worse-inflammatory-profile-in-omnivores-than-in-vegetarians-associates-with-the-gut-microbiota-composition
#6
Ana Carolina Franco-de-Moraes, Bianca de Almeida-Pititto, Gabriel da Rocha Fernandes, Everton Padilha Gomes, Alexandre da Costa Pereira, Sandra Roberta G Ferreira
AIMS: To describe the abundance of major phyla and some genera in the gut microbiota of individuals according to dietary habits and examine their associations with inflammatory markers, insulin resistance, and cardiovascular risk profile. METHODS: A total of 268 non-diabetic individuals were stratified into groups of dietary types (strict vegetarians, lacto-ovo-vegetarians, and omnivores). The taxonomic composition and phylogenetic structure of the microbiota were obtained through the analysis of the 16S rRNA gene...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28804483/the-impact-of-western-diet-and-nutrients-on-the-microbiota-and-immune-response-at-mucosal-interfaces
#7
REVIEW
Donjete Statovci, Mònica Aguilera, John MacSharry, Silvia Melgar
Recent findings point toward diet having a major impact on human health. Diets can either affect the gut microbiota resulting in alterations in the host's physiological responses or by directly targeting the host response. The microbial community in the mammalian gut is a complex and dynamic system crucial for the development and maturation of both systemic and mucosal immune responses. Therefore, the complex interaction between available nutrients, the microbiota, and the immune system are central regulators in maintaining homeostasis and fighting against invading pathogens at mucosal sites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28797248/the-role-of-bariatric-surgery-to-treat-diabetes-current-challenges-and-perspectives
#8
REVIEW
Chrysi Koliaki, Stavros Liatis, Carel W le Roux, Alexander Kokkinos
Bariatric surgery is emerging as a powerful weapon against severe obesity and type 2 diabetes mellitus (T2DM). Given its role in metabolic regulation, the gastrointestinal tract constitutes a meaningful target to treat T2DM, especially in light of accumulating evidence that surgery with gastrointestinal manipulations may result in T2DM remission (metabolic surgery). The major mechanisms mediating the weight loss-independent effects of bariatric surgery comprise effects on tissue-specific insulin sensitivity, β-cell function and incretin responses, changes in bile acid composition and flow, modifications of gut microbiota, intestinal glucose metabolism and increased brown adipose tissue metabolic activity...
August 10, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28793934/statin-therapy-causes-gut-dysbiosis-in-mice-through-a-pxr-dependent-mechanism
#9
Jose A Caparrós-Martín, Ricky R Lareu, Joshua P Ramsay, Jörg Peplies, F Jerry Reen, Henrietta A Headlam, Natalie C Ward, Kevin D Croft, Philip Newsholme, Jeffery D Hughes, Fergal O'Gara
BACKGROUND: Statins are a class of therapeutics used to regulate serum cholesterol and reduce the risk of heart disease. Although statins are highly effective in removing cholesterol from the blood, their consumption has been linked to potential adverse effects in some individuals. The most common events associated with statin intolerance are myopathy and increased risk of developing type 2 diabetes mellitus. However, the pathological mechanism through which statins cause these adverse effects is not well understood...
August 9, 2017: Microbiome
https://www.readbyqxmd.com/read/28790923/gut-microbiome-response-to-sucralose-and-its-potential-role-in-inducing-liver-inflammation-in-mice
#10
Xiaoming Bian, Liang Chi, Bei Gao, Pengcheng Tu, Hongyu Ru, Kun Lu
Sucralose is the most widely used artificial sweetener, and its health effects have been highly debated over the years. In particular, previous studies have shown that sucralose consumption can alter the gut microbiota. The gut microbiome plays a key role in processes related to host health, such as food digestion and fermentation, immune cell development, and enteric nervous system regulation. Inflammation is one of the most common effects associated with gut microbiome dysbiosis, which has been linked to a series of human diseases, such as diabetes and obesity...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28783113/-omics-in-human-colostrum-and-mature-milk-looking-to-old-data-with-new-eyes
#11
REVIEW
Flaminia Bardanzellu, Vassilios Fanos, Alessandra Reali
Human Milk (HM) is the best source for newborn nutrition until at least six months; it exerts anti-inflammatory and anti-infective functions, promotes immune system formation and supports organ development. Breastfeeding could also protect from obesity, diabetes and cardiovascular disease. Furthermore, human colostrum (HC) presents a peculiar role in newborn support as a protective effect against allergic and chronic diseases, in addition to long-term metabolic benefits. In this review, we discuss the recent literature regarding "omics" technologies and growth factors (GF) in HC and the effects of pasteurization on its composition...
August 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28782784/lactobacillus-casei-ccfm419-attenuates-type-2-diabetes-via-a-gut-microbiota-dependent-mechanism
#12
Gang Wang, Xiangfei Li, Jianxin Zhao, Hao Zhang, Wei Chen
Probiotics, as dietary supplements, transmit their major effects through the regulation of gut microbiota. According to a previous study, one possible mechanism of Lactobacillus casei CCFM419 protection against diabetes may involve gut flora. To test this hypothesis, high fat and streptozotocin-induced C57BL/6J mice were fed L. casei CCFM419 at 10(8), 10(9), and 10(10) colony forming units (CFU). Compared to untreated mice, 10(9) CFU of L. casei CCFM419 attenuated several symptoms of diabetes, including fasting blood glucose, postprandial blood glucose, glucose intolerance, and insulin resistance...
August 7, 2017: Food & Function
https://www.readbyqxmd.com/read/28774842/bioinspired-butyrate-functionalized-nanovehicles-for-targeted-oral-delivery-of-biomacromolecular-drugs
#13
Lei Wu, Min Liu, Wei Shan, Xi Zhu, Lijia Li, Zhirong Zhang, Yuan Huang
Ligand-functionalization can increase the affinity of nanoparticles (NPs) with targeted cells. However, one major defect of ligands still exists in oral administration: limited receptor recognition. The hindrance of mucus network and deactivation of enzymes severely challenge the targeting efficiency of macromolecular ligands. Inspired by "molecular exchange" between intestinal microbiota and host cells, we anchored microbiota metabolite butyrate on classical "mucus-inert" polyethylene glycol (PEG) NPs. Butyrate has unique advantages of low molecule weight, high hydrophilicity and chemical stability...
August 1, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28771521/regulation-of-type-1-diabetes-development-and-b-cell-activation-in-nonobese-diabetic-mice-by-early-life-exposure-to-a-diabetogenic-environment
#14
Alessandra De Riva, Maja Wållberg, Francesca Ronchi, Richard Coulson, Andrew Sage, Lucy Thorne, Ian Goodfellow, Kathy D McCoy, Miyuki Azuma, Anne Cooke, Robert Busch
Microbes, including viruses, influence type 1 diabetes (T1D) development, but many such influences remain undefined. Previous work on underlying immune mechanisms has focussed on cytokines and T cells. Here, we compared two nonobese diabetic (NOD) mouse colonies, NODlow and NODhigh, differing markedly in their cumulative T1D incidence (22% vs. 90% by 30 weeks in females). NODhigh mice harbored more complex intestinal microbiota, including several pathobionts; both colonies harbored segmented filamentous bacteria (SFB), thought to suppress T1D...
2017: PloS One
https://www.readbyqxmd.com/read/28770326/the-effects-of-metformin-on-gut-microbiota-and-the-immune-system-as-research-frontiers
#15
REVIEW
Michael Pollak
Recent studies have revealed that metformin influences gut microbiota and the immune system although neither is a classic target of the drug. This research has revealed complexity not previously appreciated, and opened new research directions. The extent to which immunomodulatory effects and actions on the microbiota are related to each other and account for effects on host energy metabolism remains to be determined. These sites of action may be relevant not only to the efficacy of metformin for its established use in type 2 diabetes, but also to proposed novel indications in oncology and other diseases...
August 2, 2017: Diabetologia
https://www.readbyqxmd.com/read/28769799/allspice-and-clove-as-source-of-triterpene-acids-activating-the-g-protein-coupled-bile-acid-receptor-tgr5
#16
Angela Ladurner, Martin Zehl, Ulrike Grienke, Christoph Hofstadler, Nadina Faur, Fátima C Pereira, David Berry, Verena M Dirsch, Judith M Rollinger
Worldwide, metabolic diseases such as obesity and type 2 diabetes have reached epidemic proportions. A major regulator of metabolic processes that gained interest in recent years is the bile acid receptor TGR5 (Takeda G protein-coupled receptor 5). This G protein-coupled membrane receptor can be found predominantly in the intestine, where it is mainly responsible for the secretion of the incretins glucagon-like peptide 1 (GLP-1) and peptide YY (PYY). The aim of this study was (i) to identify plant extracts with TGR5-activating potential, (ii) to narrow down their activity to the responsible constituents, and (iii) to assess whether the intestinal microbiota produces transformed metabolites with a different activity profile...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28768836/s-equol-activates-camp-signaling-at-the-plasma-membrane-of-ins-1-pancreatic-%C3%AE-cells-and-protects-against-streptozotocin-induced-hyperglycemia-by-increasing-%C3%AE-cell-function-in-male-mice
#17
Hiroko Horiuchi, Atsuko Usami, Rie Shirai, Naoki Harada, Shinichi Ikushiro, Toshiyuki Sakaki, Yoshihisa Nakano, Hiroshi Inui, Ryoichi Yamaji
Background:S-equol, which is enantioselectively produced from daidzein by gut microbiota, has been suggested as a chemopreventive agent against type 2 diabetes mellitus (T2DM), but the underlying mechanisms remain unclear.Objective: We investigated the effects of S-equol on pancreatic β-cell function.Methods: β-Cell growth and insulin secretion were evaluated with male Institute of Cancer Research mice and isolated pancreatic islets from the mice, respectively. The mechanisms by which S-equol stimulated β-cell response were examined in INS-1 β-cells...
August 2, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28765690/diarrhea-after-bariatric-procedures-diagnosis-and-therapy
#18
REVIEW
Yves M Borbély, Alice Osterwalder, Dino Kröll, Philipp C Nett, Roman A Inglin
Diarrhea after bariatric procedures, mainly those with malabsorptive elements including Roux-Y Gastric Bypass and Biliopancreatic Diversion, is common and an essential determinant of quality of life and micro- and macronutrient deficiencies. Bariatric surgery is the only sustainably successful method to address morbid obesity and its comorbidities, particularly gaining more and more importance in the specific treatment of diabetic patients. Approximately half a million procedures are annually performed around the world, with numbers expected to rise drastically in the near future...
July 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28765642/anti-diabetic-effects-of-clostridium-butyricum-cgmcc0313-1-through-promoting-the-growth-of-gut-butyrate-producing-bacteria-in-type-2-diabetic-mice
#19
Lingling Jia, Dongyao Li, Ninghan Feng, Muhammad Shamoon, Zhenghua Sun, Lei Ding, Hao Zhang, Wei Chen, Jia Sun, Yong Q Chen
Patients with type 2 diabetes (T2D) have decreased butyrate-producing bacteria. We hypothesized that supplementation with butyrate-producing bacteria may exert beneficial effects on T2D. The current study investigated the effects of well-characterized butyrate-producing bacteria Clostridium butyricum CGMCC0313.1 (CB0313.1) on hyperglycemia and associated metabolic dysfunction in two diabetic mouse models. CB0313.1 was administered daily by oral gavage to leptin (db/db) mice for 5 weeks starting from 3 weeks of age, and to HF diabetic mice induced by high fat diet (HFD) plus streptozotocin (STZ) in C57BL/6J mice for 13 weeks starting from 4 weeks of age...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28759308/vasopressin-deletion-is-associated-with-sex-specific-shifts-in-the-gut-microbiome
#20
Christopher T Fields, Benoit Chassaing, Matthew J Paul, Andrew T Gewirtz, Geert J de Vries
Brattleboro rats harbor a spontaneous deletion of the arginine-vasopressin (Avp) gene. In addition to diabetes insipidus, these rats exhibit low levels of anxiety and depressive behaviors. Recent work on the gut-brain axis has revealed that gut microbiota can influence anxiety behaviors. Therefore, we studied the effects of Avp gene deletion on gut microbiota. Since Avp gene expression is sexually different, we also examined how Avp deletion affects sex differences in gut microbiota. Males and females show modest but differentiated shifts in taxa abundance across 3 separate Avp deletion genotypes: wildtype (WT), heterozygous (Het) and AVP-deficient Brattleboro (KO) rats...
July 31, 2017: Gut Microbes
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