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Obesity intestine inflammation

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https://www.readbyqxmd.com/read/29933033/progress-and-challenges-of-selective-farnesoid-x-receptor-modulation
#1
REVIEW
Vittoria Massafra, Roberto Pellicciari, Antimo Gioiello, Saskia W C van Mil
Bile acids are amphipathic molecules that were previously known to serve as fat solubilizers in the intestine in postprandial conditions. In the last two decades, bile acids have been recognized as signaling molecules regulating energy metabolism pathways via, amongst others, the farnesoid X receptor (FXR). Upon bile acid activation, FXR controls expression of genes involved in bile acid, lipid, glucose and amino acid metabolism. In addition, FXR activation has been shown to limit the inflammatory response...
June 19, 2018: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29921789/fatty-acid-stimulated-insulin-secretion-vs-lipotoxicity
#2
REVIEW
Petr Ježek, Martin Jabůrek, Blanka Holendová, Lydie Plecitá-Hlavatá
Fatty acid (FA)-stimulated insulin secretion (FASIS) is reviewed here in contrast to type 2 diabetes etiology, resulting from FA overload, oxidative stress, intermediate hyperinsulinemia, and inflammation, all converging into insulin resistance. Focusing on pancreatic islet β-cells, we compare the physiological FA roles with the pathological ones. Considering FAs not as mere amplifiers of glucose-stimulated insulin secretion (GSIS), but as parallel insulin granule exocytosis inductors, partly independent of the KATP channel closure, we describe the FA initiating roles in the prediabetic state that is induced by retardations in the glycerol-3-phosphate (glucose)-promoted glycerol/FA cycle and by the impaired GPR40/FFA1 (free FA1) receptor pathway, specifically in its amplification by the redox-activated mitochondrial phospholipase, iPLA2γ...
June 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29920475/alterations-in-the-liver-of-intrauterine-growth-retarded-piglets-may-predispose-to-development-of-insulin-resistance-and-obesity-in-later-life
#3
K Ferenc, P Pietrzak, M Wierzbicka, P Matyba, E Grzesiuk, Z Gajewski, R Zabielski
Intrauterine growth retardation (IUGR) leads to increased predisposition to metabolic syndrome in adult life but the mechanisms remain obscure. Considering a significant number of functional similarities, IUGR piglets appear to be a good model to study the development of this syndrome in humans. The aim of the present study was to investigate the ultrastructure and proteomic profile of the liver in IUGR pig neonates to discover early markers of predisposition to obesity and insulin resistance. In our study intestine and liver tissue samples were investigated in 7 day old IUGR and normal body weight (NBW) littermate piglets using histometry, mass spectrometry, in-tissue cytometry analysis and confocal microscopy...
April 2018: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29899272/high-glucose-or-fructose-diet-cause-changes-of-the-gut-microbiota-and-metabolic-disorders-in-mice-without-body-weight-change
#4
Moon Ho Do, Eunjung Lee, Mi-Jin Oh, Yoonsook Kim, Ho-Young Park
High fat diet-induced changes in gut microbiota have been linked to intestinal permeability and metabolic endotoxemia, which is related to metabolic disorders. However, the influence of a high-glucose (HGD) or high-fructose (HFrD) diet on gut microbiota is largely unknown. We performed changes of gut microbiota in HGD- or HFrD-fed C57BL/6J mice by 16S rRNA analysis. Gut microbiota-derived endotoxin-induced metabolic disorders were evaluated by glucose and insulin tolerance test, gut permeability, Western blot and histological analysis...
June 13, 2018: Nutrients
https://www.readbyqxmd.com/read/29870676/fecal-transplant-from-resveratrol-fed-donors-improves-glycaemia-and-cardiovascular-features-of-the-metabolic-syndrome-in-mice
#5
Ty T Kim, Nirmal Parajuli, Miranda M Sung, Suresh C Bairwa, Jody Levasseur, Carrie-Lynn M Soltys, David S Wishart, Karen Madsen, Jonathan D Schertzer, Jason R B Dyck
Oral administration of resveratrol attenuates several symptoms associated with the metabolic syndrome such as impaired glucose homeostasis and hypertension. Recent work has shown that resveratrol can improve glucose homeostasis in obesity via changes in the gut microbiota. Studies involving fecal microbiome transplants (FMTs) suggest that either live gut microbiota or bacterial-derived metabolites from resveratrol ingestion are responsible for producing the observed benefits in recipients. Herein, we show that obese mice receiving FMTs from healthy resveratrol-fed mice have improved glucose homeostasis within 11 days of the first transplant, and that resveratrol-FMTs is more efficacious than oral supplementation of resveratrol for the same duration...
June 5, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29858841/the-development-of-probiotics-therapy-to-obesity-a-therapy-that-has-gained-considerable-momentum
#6
REVIEW
Yongbo Kang, Yue Cai
Obesity is a growing epidemic worldwide. The most frequent cause leading to the development of obesity is an imbalance between energy intake and energy expenditure. The gut microbiota is an environmental factor involved in obesity and metabolic disorders which reveals that obese animal and human subjects present alterations in the composition of the gut microbiota compared to their lean counterparts. Furthermore, evidence has so far demonstrated that the gut microbiota, which influences whole-body metabolism, by affecting energy balance, but also inflammation and gut barrier function, integrates peripheral and central food intake regulatory signals, thereby altering body weight...
April 16, 2018: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29849871/changes-of-plasma-fabp4-crp-leptin-and-chemerin-levels-in-relation-to-different-dietary-patterns-and-duodenal-jejunal-omega-switch-surgery-in-sprague-dawley-rats
#7
Dominika Stygar, Elżbieta Chełmecka, Tomasz Sawczyn, Bronisława Skrzep-Poloczek, Jakub Poloczek, Konrad Wojciech Karcz
Background: Pathophysiological links between inflammation, obesity, and adipokines can be used for the treatment of metabolic dysregulation. Aims: To examine the influence of duodenal-jejunal omega switch surgery in combination with different diet patterns on plasma concentrations of fatty acid-binding protein 4 (FABP4), C-reactive protein (CRP), leptin, and chemerin. Methods: After 8 weeks on a high-fat diet (HF) or control diet (CD), rats underwent surgery...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29787870/oral-hydroxysafflor-yellow-a-reduces-obesity-in-mice-by-modulating-the-gut-microbiota-and-serum-metabolism
#8
Juan Liu, Shijun Yue, Zhirui Yan, Wuwen Feng, Xintong Meng, Aiting Wang, Cheng Peng, Changyun Wang, Dan Yan
Given the high and increasing prevalence of obesity, the safe and effective treatment of obesity would be beneficial. Here, we examined whether oral hydroxysafflor yellow A (HSYA), an active compound from the dried florets of Carthamus tinctorius L., can reduce high-fat (HF) diet-induced obesity in C57BL/6 J mice. Our results showed that the average body weight of HF group treated by HSYA was significantly lower than that of the HF group (P < 0.01). HSYA also reduced fat accumulation, ameliorated insulin resistance, restored glucose homeostasis, reduced inflammation, enhanced intestinal integrity, and increased short-chain fatty acids ((SCFAs)) production in HF diet-fed mice...
May 19, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29762384/microbial-metabolism-in-the-mammalian-gut-molecular-mechanisms-and-clinical-implications
#9
Anne Hall, James Versalovic
Human intestinal microbes participate actively at the interface of diet, nutrition, and overall health status. These biodiverse communities of microorganisms have a broader metabolic repertoire compared with their host, and they are able to synthesize and degrade substrates that would be otherwise unavailable. In recent years, we have recognized that healthy microbial communities are important for energy harvest and the regulation of body systems outside the digestive tract. Microbial dysbiosis, however, has been implicated in a number of human disorders, including obesity and inflammation...
June 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29756563/cyclooxygenase-2-inhibitors-as-a-therapeutic-target-in-inflammatory-diseases
#10
Miguel D Ferrer, Carla Busquests-Cortes, Xavier Capo, Silvia Tejada, Josep A Tur, Antoni Pons, Antoni Sureda
Inflammation plays a crucial role in the development of many complex diseases and disorders including autoimmune diseases, metabolic syndrome, neurodegenerative diseases, and cardiovascular pathologies. Prostaglandins play a regulatory role in inflammation. Cyclooxygenases are the main mediators of inflammation by catalyzing the initial step of arachidonic acid metabolism and prostaglandin synthesis. The differential expression of the constitutive isoform COX-1 and the inducible isoform COX-2, and the finding that COX-1 is the major form expressed in the gastro-intestinal tract, lead to the search for COX-2-selective inhibitors as anti-inflammatory agents that might diminish the gastrointestinal side effects of traditional non-steroidal anti-inflamatory drugs (NSAIDs)...
May 13, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29745332/interactions-of-dietary-fiber-with-nutritional-components-on-gut-microbial-composition-function-and-health-in-monogastrics
#11
A Seidu, Che Dongsheng, Qin Guixin, Jiang Hailong, Rui Han, Cornelius Tlotliso Sello
The relation between dietary fiber and wellbeing of human and other monogastrics has recently became a hot topic as showed in an increasing number of publication of the related research. The aim of this review is to describe through a logical approach the scientific suggestion linking possible benefits of dietary fiber on nutritional components and their effect on the gastrointestinal composition in relation to disease conditions in humans or animals. Dietary fiber plays a key role in influencing blood glucose or insulin concentrations, stool bulkiness, reduce the pH within the digestive tract, synthesize volatile fatty acids (VFA), reduce intestinal transit time, stimulate growth of intestinal microbes, and constructively enhance various blood parameters...
May 7, 2018: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29731838/analysis-of-changes-in-intestinal-flora-and-intravascular-inflammation-and-coronary-heart-disease-in-obese-patients
#12
Xv Li, Chuantao Li
Changes in intestinal flora in obese patients and intravascular C-reactive protein (CRP), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) and coronary heart disease (CHD) were analyzed. A total of 75 cases of obese patients were divided into obesity (OB) alone (n=40) and OB with CHD group (n=35). There was no statistically significant difference in age, sex, pre-existing basic diabetes, history of hypertension, and body mass index (P>0.05). Results showed that total bacterial load of CHD was obviously higher than that of OB group...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29723205/dietary-yeast-derived-mannan-oligosaccharides-have-immune-modulatory-properties-but-do-not-improve-high-fat-diet-induced-obesity-and-glucose-intolerance
#13
Lisa R Hoving, Hendrik J P van der Zande, Amanda Pronk, Bruno Guigas, Ko Willems van Dijk, Vanessa van Harmelen
The indigestible mannan oligosaccharides (MOS) derived from the outer cell wall of yeast Saccharomyces cerevisiae have shown potential to reduce inflammation. Since inflammation is one of the underlying mechanisms involved in the development of obesity-associated metabolic dysfunctions, we aimed to determine the effect of dietary supplementation with MOS on inflammation and metabolic homeostasis in lean and diet-induced obese mice. Male C57BL/6 mice were fed either a low fat diet (LFD) or a high fat diet (HFD) with, respectively, 10% or 45% energy derived from lard fat, with or without 1% MOS for 17 weeks...
2018: PloS One
https://www.readbyqxmd.com/read/29694905/obesity-suppresses-cell-competition-mediated-apical-elimination-of-rasv12-transformed-cells-from-epithelial-tissues
#14
Ayana Sasaki, Takahiro Nagatake, Riku Egami, Guoqiang Gu, Ichigaku Takigawa, Wataru Ikeda, Tomoya Nakatani, Jun Kunisawa, Yasuyuki Fujita
Recent studies have revealed that newly emerging transformed cells are often eliminated from epithelial tissues via cell competition with the surrounding normal epithelial cells. This cancer preventive phenomenon is termed epithelial defense against cancer (EDAC). However, it remains largely unknown whether and how EDAC is diminished during carcinogenesis. In this study, using a cell competition mouse model, we show that high-fat diet (HFD) feeding substantially attenuates the frequency of apical elimination of RasV12-transformed cells from intestinal and pancreatic epithelia...
April 24, 2018: Cell Reports
https://www.readbyqxmd.com/read/29690638/neurotensin-is-a-lipid-induced-gastrointestinal-peptide-associated-with-visceral-adipose-tissue-inflammation-in-obesity
#15
Ilaria Barchetta, Flavia Agata Cimini, Danila Capoccia, Laura Bertoccini, Valentina Ceccarelli, Caterina Chiappetta, Frida Leonetti, Claudio Di Cristofano, Gianfranco Silecchia, Marju Orho-Melander, Olle Melander, Maria Gisella Cavallo
Neurotensin (NT) is a 13-amino acid peptide localized in the neuroendocrine cells of the small intestine, which promotes fat absorption and fatty acids translocation in response to lipid ingestion. NT-knock-out mice fed with a high-fat diet are protected from obesity, fatty liver, and the development of insulin-resistance. In humans, higher plasma levels of pro-NT, which is the stable circulating precursor of NT, predict obesity, type 2 diabetes (T2D), and cardiovascular disease. In obesity, the presence of visceral adipose tissue (VAT) inflammation leads to unfavorable metabolic outcomes and is associated with the development of T2D and non-alcoholic fatty liver disease (NAFLD)...
April 23, 2018: Nutrients
https://www.readbyqxmd.com/read/29684027/chronic-calcitriol-supplementation-improves-the-inflammatory-profiles-of-circulating-monocytes-and-the-associated-intestinal-adipose-tissue-alteration-in-a-diet-induced-steatohepatitis-rat-model
#16
Yen-Bo Su, Tzu-Hao Li, Chia-Chang Huang, Hung-Cheng Tsai, Shiang-Fen Huang, Yun-Cheng Hsieh, Ying-Ying Yang, Yi-Hsiang Huang, Ming-Chih Hou, Han-Chieh Lin
Vitamin D deficiency and up-regulated TNFα-related signals are reported to be involved in abnormalities including intestinal hyper-permeability, bacterial translocation, systemic/portal endotoxemia, intestinal/adipose tissue/hepatic inflammation, and hepatic steatosis in nonalcoholic steatohepatitis (NASH). This study aims to explore the molecular mechanisms and effects of chronic calcitriol [1,25-(OH)2D3, hormonal form of vitamin D] on gut-adipose tissue-liver axis abnormalities using a high-fat diet (HFD)-fed rat model of NASH...
2018: PloS One
https://www.readbyqxmd.com/read/29669931/targeting-the-gut-microbiome-to-treat-the-osteoarthritis-of-obesity
#17
Eric M Schott, Christopher W Farnsworth, Alex Grier, Jacquelyn A Lillis, Sarah Soniwala, Gregory H Dadourian, Richard D Bell, Madison L Doolittle, David A Villani, Hani Awad, John P Ketz, Fadia Kamal, Cheryl Ackert-Bicknell, John M Ashton, Steven R Gill, Robert A Mooney, Michael J Zuscik
Obesity is a risk factor for osteoarthritis (OA), the greatest cause of disability in the US. The impact of obesity on OA is driven by systemic inflammation, and increased systemic inflammation is now understood to be caused by gut microbiome dysbiosis. Oligofructose, a nondigestible prebiotic fiber, can restore a lean gut microbial community profile in the context of obesity, suggesting a potentially novel approach to treat the OA of obesity. Here, we report that - compared with the lean murine gut - obesity is associated with loss of beneficial Bifidobacteria, while key proinflammatory species gain in abundance...
April 19, 2018: JCI Insight
https://www.readbyqxmd.com/read/29653264/helminth-infection-in-mice-improves-insulin-sensitivity-via-modulation-of-gut-microbiota-and-fatty-acid-metabolism
#18
Fernanda Pace, Bruno M Carvalho, Tamires M Zanotto, Andrey Santos, Dioze Guadagnini, Kelly L C Silva, Maria Carolina S Mendes, Guilherme Z Rocha, Silmara M Alegretti, Gustavo A Santos, Rodrigo R Catharino, Rita Paroni, Franco Folli, Mário José A Saad
Intestinal helminths are prevalent in individuals who live in rural areas of developing countries, where obesity, type 2 diabetes, and metabolic syndrome are rare. In the present study, we analyzed the modulation of the gut microbiota in mice infected with the helminth Strongyloides venezuelensis, and fed either a standard rodent chow diet or high-fat diet (HFD). To investigate the effects of the microbiota modulation on the metabolism, we analyzed the expression of tight-junction proteins present in the gut epithelium, inflammatory markers in the serum and tissue and quantified glucose tolerance and insulin sensitivity and resistance...
April 10, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29619418/the-role-of-intestinal-c-type-regenerating-islet-derived-3-lectins-for-nonalcoholic-steatohepatitis
#19
Sena Bluemel, Lirui Wang, Cameron Martino, Suhan Lee, Yanhan Wang, Brandon Williams, Angela Horvath, Vanessa Stadlbauer, Karsten Zengler, Bernd Schnabl
C-type regenerating islet derived-3 (Reg3) lectins defend against pathogens and keep commensal bacteria at a distance. Deficiency of Reg3g and Reg3b facilitates alcohol-induced bacterial translocation and alcoholic liver disease. Intestinal Reg3g is down-regulated in animal models of diet-induced obesity, but the functional consequences for nonalcoholic steatohepatitis (NASH) are unknown. The aim of this study was to investigate the role of Reg3 lectins in NASH. NASH was induced by a Western-style fast-food diet in mice deficient for Reg3g or Reg3b and in transgenic mice overexpressing Reg3g in intestinal epithelial cells ( Reg3g Tg)...
April 2018: Hepatology Communications
https://www.readbyqxmd.com/read/29550578/non-obese-type-2-diabetes-patients-present-intestinal-b-cell-dysregulations-associated-with-hyperactive-intestinal-tfh-cells
#20
Jingjing Zhou, Yiran Wang, Yifei He, Ye Gao, Renhui Wan, Mengxi Cai, Wenwen Li, Rong Chen, Emma Walker, Xiao Zhai, Qijin Wang
Most current studies of type 2 diabetes (T2D) focus on obesity in the pathogenesis of the disease. However, many individuals develop T2D at non-obese body mass index (BMI) level. It is yet unclear whether certain etiological mechanisms discovered in these obese models can apply to non-obese T2D patients. In the present study, we focused on one aspect that was potentially involved in T2D development, the intestinal inflammation, and examined the difference between non-obese T2D patients and BMI-matched healthy controls...
May 2018: Molecular Immunology
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