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Obesity intestine inflammation

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https://www.readbyqxmd.com/read/29221725/protective-effects-of-polyphenol-rich-infusions-from-carob-ceratonia-siliqua-leaves-and-cladodes-of-opuntia-ficus-indica-against-inflammation-associated-with-diet-induced-obesity-and-dss-induced-colitis-in-swiss-mice
#1
Ikram Aboura, Abdelhafid Nani, Meriem Belarbi, Babar Murtaza, Aurélie Fluckiger, Adélie Dumont, Chahid Benammar, Moufida Saidani Tounsi, François Ghiringhelli, Mickaël Rialland, Naim Akhtar Khan, Aziz Hichami
In the present study, we have investigated the effects of polyphenol-rich infusions from carob leaves and OFI-cladodes on inflammation associated with obesity and dextran sulfate sodium (DSS)-induced ulcerative colitis in Swiss mice. In vitro studies revealed that aqueous extracts of carob leaves and OFI-cladodes exhibited anti-inflammatory properties marked by the inhibition of IL-6, TNF-α and nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells concomitant with NF-κβ nucleus translocation inhibition...
December 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29211803/hypoxia-and-inactivity-related-physiological-changes-precede-or-take-place-in-absence-of-significant-rearrangements-in-bacterial-community-structure-the-planhab-randomized-trial-pilot-study
#2
Robert Šket, Nicole Treichel, Susanne Kublik, Tadej Debevec, Ola Eiken, Igor Mekjavić, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Matevž Likar, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the randomized crossover design of run-in (5 day) and experimental phases (21-day normoxic bed rest (NBR), hypoxic bed rest (HBR) and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, with balanced fluid and dietary intakes, controlled circadian rhythm, microbial ambiental burden and 24/7 medical surveillance. The fraction of inspired O2 (FiO2) and partial pressure of inspired O2 (PiO2) were 0.209 and 133...
2017: PloS One
https://www.readbyqxmd.com/read/29202334/berberine-treatment-increases-akkermansia-in-the-gut-and-improves-high-fat-diet-induced-atherosclerosis-in-apoe-mice
#3
Lin Zhu, Danying Zhang, Hong Zhu, Jimin Zhu, Shuqiang Weng, Ling Dong, Taotao Liu, Yu Hu, Xizhong Shen
BACKGROUND AND AIMS: Gut microbiota plays a major role in metabolic disorders. Berberine is used to treat obesity, diabetes and atherosclerosis. The mechanism underlying the role of berberine in modulating metabolic disorders is not fully clear because berberine has poor oral bioavailability. Thus, we evaluated whether the antiatherosclerotic effect of berberine is related to alterations in gut microbial structure and if so, whether specific bacterial taxa contribute to the beneficial effects of berberine...
November 24, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29190550/green-tea-extract-protects-against-hepatic-nf%C3%AE%C2%BAb-activation-along-the-gut-liver-axis-in-diet-induced-obese-mice-with-nonalcoholic-steatohepatitis-by-reducing-endotoxin-and-tlr4-myd88-signaling
#4
Jinhui Li, Geoffrey Y Sasaki, Priyankar Dey, Chureeporn Chitchumroonchokchai, Allison N Labyk, Joshua D McDonald, Joshua B Kim, Richard S Bruno
Green tea extract (GTE) reduces NFκB-mediated inflammation during nonalcoholic steatohepatitis (NASH). We hypothesized that its anti-inflammatory activities would be mediated in a Toll-like receptor 4 (TLR4)-dependent manner. Wild-type (WT) and loss-of-function TLR4-mutant (TLR4m) mice were fed a high-fat diet containing GTE at 0 or 2% for 8 weeks before assessing NASH, NFκB-mediated inflammation, TLR4 and its adaptor proteins MyD88 and TRIF, circulating endotoxin, and intestinal tight junction protein mRNA expression...
November 3, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29188819/colonic-bacteroides-are-positively-associated-with-trabecular-bone-structure-and-programmed-by-maternal-vitamin-d-in-male-but-not-female-offspring-in-an-obesogenic-environment
#5
C R Villa, A Taibi, J Chen, W E Ward, E M Comelli
BACKGROUND/OBJECTIVES: The gut microbiota is determined early in life, possibly including pregnancy. Pioneering data suggests vitamin D, a nutrient important for bone health, affects this microbiota. We found that high maternal vitamin D lowered circulating lipopolysaccharide, improved intestinal barrier and bone health in male but not female offspring in an obesogenic environment. This study determined if high maternal dietary vitamin D programs Bacteroides and Prevotella and whether this associates with bone mineral content, density and structure of male and female adult offspring fed an obesogenic diet...
November 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29183872/endotoxin-initiated-inflammation-reduces-testosterone-production-in-men-of-reproductive-age
#6
Kelton Tremellen, Natalie McPhee, Karma Pearce, Sven Bedson, Manfred Schedlowski, Harald Engler
Inflammation, both acute and chronic is associated with testosterone deficiency, raising the possibility of a direct causal link. One potential trigger for inflammation in obese men is the passage of intestinal bacteria into the circulation due to a breakdown in mucosal barrier integrity. Recently we hypothesized that this endotoxin exposure may cause androgen deficiency in obese men. To test this hypothesis, we analysed the relationship between serum levels of lipopolysaccharide binding protein (LBP), an indirect measure of endotoxin exposure, against male reproductive hormones, inflammatory markers (CRP, IL-1β, IL-6, TNF-α) and adiposity in 75 men...
November 28, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29176006/gpr120-mechanism-of-action-role-and-potential-for-medical-applications
#7
Hanna Karakuła-Juchnowicz, Joanna Róg, Dariusz Juchnowicz, Justyna Morylowska-Topolska
G protein-coupled receptors (GPCRs) constitute a family of transmembrane proteins that mediate many cellular processes. GPR120/FFAR4, a receptor from this family that is activated by fatty acids, has received considerable attention recently. This paper presents a literature review concerning the role of GPR120 and its mechanism of action in animal and human studies as well as the potential use of GPR120 for the treatment of chronic diseases. Two electronic databases - Medline and Google Scholar - were searched for available studies addressing the review topic that were written in English and published from 2000 to June 2017...
November 19, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/29166392/intestinal-ralstonia-pickettii-augments-glucose-intolerance-in-obesity
#8
Shanthadevi D Udayappan, Petia Kovatcheva-Datchary, Guido J Bakker, Stefan R Havik, Hilde Herrema, Patrice D Cani, Kristien E Bouter, Clara Belzer, Julia J Witjes, Anne Vrieze, Noor de Sonnaville, Alice Chaplin, Daniel H van Raalte, Steven Aalvink, Geesje M Dallinga-Thie, Hans G H J Heilig, Göran Bergström, Suzan van der Meij, Bart A van Wagensveld, Joost B L Hoekstra, Frits Holleman, Erik S G Stroes, Albert K Groen, Fredrik Bäckhed, Willem M de Vos, Max Nieuwdorp
An altered intestinal microbiota composition has been implicated in the pathogenesis of metabolic disease including obesity and type 2 diabetes mellitus (T2DM). Low grade inflammation, potentially initiated by the intestinal microbiota, has been suggested to be a driving force in the development of insulin resistance in obesity. Here, we report that bacterial DNA is present in mesenteric adipose tissue of obese but otherwise healthy human subjects. Pyrosequencing of bacterial 16S rRNA genes revealed that DNA from the Gram-negative species Ralstonia was most prevalent...
2017: PloS One
https://www.readbyqxmd.com/read/29160087/glyoxalase-1-modulation-in-obesity-and-diabetes
#9
Naila Rabbani, Paul J Thornalley
SIGNIFICANCE: Obesity and type 2 diabetes mellitus are increasing globally. There is also increasing associated complications, such as non-alcoholic fatty liver disease (NAFLD) and vascular complications of diabetes. There is currently no licensed treatment for NAFLD and no recent treatments for diabetic complications. New approaches are required, particularly addressing mechanism-based risk factors for health decline and disease progression. Recent advances: Dicarbonyl stress is the abnormal accumulation of reactive dicarbonyl metabolites such as methylglyoxal leading to cell and tissue dysfunction...
November 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29142285/blockade-of-cb1-cannabinoid-receptor-alters-gut-microbiota-and-attenuates-inflammation-and-diet-induced-obesity
#10
Pegah Mehrpouya-Bahrami, Kumaraswamy Naidu Chitrala, Mitra S Ganewatta, Chuanbing Tang, E Angela Murphy, Reilly T Enos, Kandy T Velazquez, Jamie McCellan, Mitzi Nagarkatti, Prakash Nagarkatti
Obesity is characterized by chronic low-grade, systemic inflammation, altered gut microbiota, and gut barrier disruption. Additionally, obesity is associated with increased activity of endocannabinoid system (eCB). However, the clear connection between gut microbiota and the eCB system in the regulation of energy homeostasis and adipose tissue inflammation and metabolism, remains to be established. We investigated the effect of treatment of mice with a cannabinoid receptor 1 (CB1) antagonist on Diet-Induced Obesity (DIO), specifically whether such a treatment that blocks endocannabinoid activity can induce changes in gut microbiota and anti-inflammatory state in adipose tissue...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29139555/tauroursodeoxycholic-acid-inhibits-intestinal-inflammation-and-barrier-disruption-in-nafld-mice
#11
Weijun Wang, Jinfang Zhao, Wenfang Gui, Dan Sun, Haijiang Dai, Li Xiao, Huikuan Chu, Fan Du, Qingjing Zhu, Bernd Schnabl, Kai Huang, Ling Yang, Xiaohua Hou
BACKGROUND AND PURPOSE: The gut-liver axis is associated with the progression of non-alcoholic fatty liver disease (NAFLD). Targeting the gut-liver axis and bile acid-based pharmaceuticals are potential therapies for NAFLD. The effect of tauroursodeoxycholic acid (TUDCA), a candidate medicine for NAFLD, on intestinal barrier function, intestinal inflammation, gut lipid transport and microbiota composition in a murine NAFLD model were analysed. EXPERIMENTAL APPROACHES: An NAFLD mouse model was established by feeding mice with a high-fat diet (HFD) for 16 weeks...
November 15, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29112082/a-pilot-study-measuring-the-novel-satiety-hormone-pro-uroguanylin-in-adolescents-with-and-without-obesity
#12
Matthew D Di Guglielmo, Dalal Tonb, Zhaoping He, Adebowale Adeyemi, Kenneth L van Golen
OBJECTIVE: Disruption of satiety signaling may lead to increased caloric intake and obesity. Uroguanylin, the intestinal hormone, travels as a precursor to the central nervous system where it activates guanylyl cyclase C (GUCY2C) and stimulates pro-satiety neurons. Rodent studies have demonstrated that (1) GUCY2C-knockout mice over-eat and have increased weight gain vs. wild-type mice; and (2) hyper-caloric obesity diminishes uroguanylin expression. We measured circulating plasma pro-uroguanylin, along with other gastrointestinal peptides and inflammatory markers, in human adolescents with and without obesity, as a pilot study...
November 3, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29107964/obesogenic-diet-induced-gut-barrier-dysfunction-and-pathobiont-expansion-aggravate-experimental-colitis
#13
June-Chul Lee, Hae-Youn Lee, Tae Kang Kim, Min-Soo Kim, Young Mi Park, Jinyoung Kim, Kihyoun Park, Mi-Na Kweon, Seok-Hyung Kim, Jin-Woo Bae, Kyu Yeon Hur, Myung-Shik Lee
Consumption of a typical Western diet is a risk factor for several disorders. Metabolic syndrome is the most common disease associated with intake of excess fat. However, the incidence of inflammatory bowel disease is also greater in subjects consuming a Western diet, although the mechanism of this phenomenon is not clearly understood. We examined the morphological and functional changes of the intestine, the first site contacting dietary fat, in mice fed a high-fat diet (HFD) inducing obesity. Paneth cell area and production of antimicrobial peptides by Paneth cells were decreased in HFD-fed mice...
2017: PloS One
https://www.readbyqxmd.com/read/29101397/gut-dysbiosis-and-impairment-of-immune-system-homeostasis-in-perinatally-exposed-mice-to-bisphenol-a-precede-obese-phenotype-development
#14
Yann Malaisé, Sandrine Menard, Christel Cartier, Eric Gaultier, Frédéric Lasserre, Corinne Lencina, Cherryl Harkat, Nancy Geoffre, Laïla Lakhal, Isabelle Castan, Maïwenn Olier, Eric Houdeau, Laurence Guzylack-Piriou
Epidemiology evidenced the Bisphenol A (BPA), a chemical found in daily consumer products, as an environmental contributor to obesity and type II diabetes (T2D) in Humans. However, the BPA-mediated effects supporting these metabolic disorders are still unknown. Knowing that obesity and T2D are associated with low-grade inflammation and gut dysbiosis, we performed a longitudinal study in mice to determine the sequential adverse effects of BPA on immune system and intestinal microbiota that could contribute to the development of metabolic disorders...
November 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29082264/role-of-the-gastrointestinal-tract-microbiome-in-the-pathophysiology-of-diabetes-mellitus
#15
REVIEW
Muhammad U Sohail, Asmaa Althani, Haseeb Anwar, Roberto Rizzi, Hany E Marei
The incidence of diabetes mellitus is rapidly increasing throughout the world. Although the exact cause of the disease is not fully clear, perhaps, genetics, ethnic origin, obesity, age, and lifestyle are considered as few of many contributory factors for the disease pathogenesis. In recent years, the disease progression is particularly linked with functional and taxonomic alterations in the gastrointestinal tract microbiome. A change in microbial diversity, referred as microbial dysbiosis, alters the gut fermentation profile and intestinal wall integrity and causes metabolic endotoxemia, low-grade inflammation, autoimmunity, and other affiliated metabolic disorders...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29080342/cross-talk-between-bile-acids-and-gastro-intestinal-and-thermogenic-clues-from-bariatric-surgery
#16
Gabriella Garruti, Agostino Di Ciaula, Helen H Wang, David Q-H Wang, Piero Portincasa
Obesity is rapidly increasing and has reached epidemic features worldwide. It´s linked to insulin resistance, systemic low-grade inflammation and common pathogenic pathways with a number of comorbidities (including cancer), leading to high mortality rates. Besides change of lifestyles (diet and physical exercise) and pharmacological therapy, bariatric surgery is able to rapidly improve several metabolic and morphologic features associated with excessive fat storage, and currently represents an in vivo model to study the pathogenic mechanisms underlying obesity and obesity-related complications...
October 28, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29055387/the-colon-revisited-or-the-key-to-wellness-health-and-disease
#17
C A Gonzalez-Correa, E Mulett-Vásquez, D A Miranda, C H Gonzalez-Correa, P A Gómez-Buitrago
The hypothesis being advanced in this paper is that there is a new medical paradigm emerging from the biomedical research carried out in this century, mainly due to the explosion of the so called "omics" and associated techniques. The main idea is that there is a common pathway from wellbeing and health to chronic disease ("chronopathy") and even to death, which comprises following steps: 1) unhealthy diet, sedentary life style and permanent exposition to xenobiotics and all kinds of noxious stimuli;→2) intestinal dysbiosis;→3) alteration of the intestinal mucus layer (especially that of the colon);→4) disruption of the endothelial tight junctions;→5) metabolic endotoxemia+bacterial translocation;→6) inflammation;→7) exacerbation of the enteric nervous system (ENS) and consequent maladaptation and malfunctioning of the colon;→8) epigenetic manifestations;→9) "chronopathy" and premature death...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28986813/effect-of-jiaotai-pill-on-intestinal-damage-in-partially-sleep-deprived-rats
#18
Wen-Ya Huang, Xin Zou, Fu-Er Lu, Chu Zhang, Yan-Lin Ren, Li-Jun Xu, Kai-Fu Wang, Hui Dong
OBJECTIVE: To explore the effect and mechanism of Jiaotai Pill (, JTW) on intestinal mucosal damage in rats with chronic partial sleep deprivation (PSD). METHODS: Obesity resistant (OR) rats were selected, and underwent 4 h PSD by being exposed to environmental noise for 4 weeks. During the whole PSD period, JTW and estazolam were orally given to the rats respectively in the treating groups. Plasma concentration of lipopolysaccharide (LPS) which is the marker of gut-origin endotoxemia was examined...
October 6, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28970836/fructose-a-dietary-sugar-in-crosstalk-with-microbiota-contributing-to-the-development-and-progression-of-non-alcoholic-liver-disease
#19
REVIEW
Jessica Lambertz, Sabine Weiskirchen, Silvano Landert, Ralf Weiskirchen
Fructose is one of the key dietary catalysts in the development of non-alcoholic fatty liver disease (NAFLD). NAFLD comprises a complex disease spectrum, including steatosis (fatty liver), non-alcoholic steatohepatitis, hepatocyte injury, inflammation, and fibrosis. It is also the hepatic manifestation of the metabolic syndrome, which covers abdominal obesity, insulin resistance, dyslipidemia, glucose intolerance, or type 2 diabetes mellitus. Commensal bacteria modulate the host immune system, protect against exogenous pathogens, and are gatekeepers in intestinal barrier function and maturation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28968517/probiotics-modulate-gut-microbiota-and-improve-insulin-sensitivity-in-dio-mice
#20
Renata A Bagarolli, Natália Tobar, Alexandre G Oliveira, Tiago G Araújo, Bruno M Carvalho, Guilherme Z Rocha, Juliana F Vecina, Kelly Calisto, Dioze Guadagnini, Patrícia O Prada, Andrey Santos, Sara T O Saad, Mario J A Saad
Obesity and type 2 diabetes are characterized by subclinical inflammatory process. Changes in composition or modulation of the gut microbiota may play an important role in the obesity-associated inflammatory process. In the current study, we evaluated the effects of probiotics (Lactobacillus rhamnosus, L. acidophilus and Bifidobacterium bifidumi) on gut microbiota, changes in permeability, and insulin sensitivity and signaling in high-fat diet and control animals. More importantly, we investigated the effects of these gut modulations on hypothalamic control of food intake, and insulin and leptin signaling...
August 26, 2017: Journal of Nutritional Biochemistry
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