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microbiota metabolism syndrome

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https://www.readbyqxmd.com/read/28624548/glucocorticoids-and-gut-bacteria-the-galf-hypothesis-in-the-metagenomic-era
#1
REVIEW
David J Morris, Jason M Ridlon
A new concept is emerging in biomedical sciences: the gut microbiota is a virtual 'organ' with endocrine function. Here, we explore the literature pertaining to the role of gut microbial metabolism of endogenous adrenocorticosteroids as a contributing factor in the etiology of essential hypertension. A body of literature demonstrates that bacterial products of glucocorticoid metabolism are absorbed into the portal circulation, and pass through the kidney before excretion into urine. Apparent Mineralocorticoid Excess (AME) syndrome patients were found to have congenital mutations resulting in non-functional renal 11β-hydroxysteroid dehydrogenase-2 (11β-HSD2) and severe hypertension often lethal in childhood...
June 14, 2017: Steroids
https://www.readbyqxmd.com/read/28609252/fecal-microbiota-transplantation-in-metabolic-syndrome-history-present-and-future
#2
P F de Groot, M N Frissen, N C de Clercq, M Nieuwdorp
The history of fecal microbiota transplantation (FMT) dates back even to ancient China. Recently, scientific studies have been looking into FMT as a promising treatment of various diseases, while in the process teaching us about the interaction between the human host and its resident microbial communities. Current research focuses mainly on Clostridium difficile infections, however interest is rising in other areas such as inflammatory bowel disease (IBD) and the metabolic syndrome. With regard to the latter, the intestinal microbiota might be causally related to the progression of insulin resistance and diabetes...
May 4, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28608320/chronic-treatment-with-prebiotics-probiotics-and-synbiotics-attenuated-cardiac-dysfunction-by-improving-cardiac-mitochondrial-dysfunction-in-male-obese-insulin-resistant-rats
#3
Wannipa Tunapong, Nattayaporn Apaijai, Sakawdaurn Yasom, Pongpan Tanajak, Keerati Wanchai, Titikorn Chunchai, Sasiwan Kerdphoo, Sathima Eaimworawuthikul, Parameth Thiennimitr, Anchalee Pongchaidecha, Anusorn Lungkaphin, Wasana Pratchayasakul, Siriporn C Chattipakorn, Nipon Chattipakorn
PURPOSE: In metabolic syndrome, the composition of gut microbiota has been disrupted, and is associated with left ventricular (LV) dysfunction. Several types of prebiotics, probiotics, and synbiotics have been shown to exert cardioprotection by restoring gut microbiota from dysbiosis and reducing systemic inflammation. However, the effects of prebiotics such as xylooligosaccharides (XOS); probiotics such as Lactobacillus paracasei STII01 HP4, and synbiotics on metabolic and LV function in obese insulin-resistant rats have not been investigated...
June 12, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28606217/nutritional-support-for-low-birth-weight-infants-insights-from-animal-studies
#4
Na Li, Wei Wang, Guoyao Wu, Junjun Wang
Infants born with low birth weights (<2500 g, LBW), accounting for about 15 % of newborns, have a high risk for postnatal growth failure and developing the metabolic syndromes such as type 2 diabetes, CVD and obesity later in life. Improper nutrition provision during critical stages, such as undernutrition during the fetal period or overnutrition during the neonatal period, has been an important mediator of these metabolic diseases. Considering the specific physiological status of LBW infants, nutritional intervention and optimisation during early life merit further attention...
June 13, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28597812/microbial-impact-on-host-metabolism-opportunities-for-novel-treatments-of-nutritional-disorders
#5
Hubert Plovier, Patrice D Cani
Malnutrition is the cause of major public health concerns worldwide. On the one hand, obesity and associated pathologies (also known as the metabolic syndrome) affect more than 10% of the world population. Such pathologies might arise from an elevated inflammatory tone. We have discovered that the inflammatory properties of high-fat diets were linked to the translocation of lipopolysaccharide (LPS). We proposed a mechanism associating the gut microbiota with the onset of insulin resistance and low-grade inflammation, a phenomenon that we called "metabolic endotoxemia...
June 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28585202/microbiota-and-lipotoxicity
#6
Evren Doruk Engin
Obesity and metabolic syndrome is a multisystemic disorder, that is characterized by excess caloric intake and spillover lipotoxicity caused by ectopic lipid accumulation in non-adipose tissues. Low grade chronic inflammation and insulin resistance are the hallmarks of the disorder, which further aggravate the condition. Gut microbiota constitutes an indispensible part of human superorganism's energy harvesting apparatus. The dynamic composition of microbiota changes with age, life style and host metabolic background...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28573213/chemoproteomic-profiling-of-bile-acid-interacting-proteins
#7
Shentian Zhuang, Qiang Li, Lirong Cai, Chu Wang, Xiaoguang Lei
Bile acids (BAs) are a family of endogenous metabolites synthesized from cholesterol in liver and modified by microbiota in gut. Being amphipathic molecules, the major function of BAs is to help with dietary lipid digestion. In addition, they also act as signaling molecules to regulate lipid and glucose metabolism as well as gut microbiota composition in the host. Remarkably, recent discoveries of the dedicated receptors for BAs such as FXR and TGR5 have uncovered a number of novel actions of BAs as signaling hormones which play significant roles in both physiological and pathological conditions...
May 24, 2017: ACS Central Science
https://www.readbyqxmd.com/read/28557822/gut-microbiota-and-the-gut-brain-axis-new-insights-in-the-pathophysiology-of-metabolic-syndrome
#8
Nicolien de Clercq, Myrthe N Frissen, Albert K Groen, Max Nieuwdorp
OBJECTIVE: Emerging pre-clinical evidence has shown that the bidirectional signaling between the gastrointestinal tract and the brain, the so-called gut-brain axis, plays an important role in both host metabolism and behavior. In this review, we will discuss the potential mechanisms of the brain-gut axis in relation to the pathophysiology of metabolic syndrome. METHODS: A selective literature review was conducted to evaluate gastrointestinal and brain interactions...
May 27, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28545248/ephedra-treated-donor-derived-gut-microbiota-transplantation-ameliorates-high-fat-diet-induced-obesity-in-rats
#9
Jing-Hua Wang, Bong-Soo Kim, Kyungsun Han, Hojun Kim
Changes in gut microbiota (GM) are closely associated with metabolic syndrome, obesity, type 2 diabetes and so on. Several medicinal herbs, including Ephedra sinica (Es), have anti-obesity effects that ameliorate metabolic disorders. Therefore, in this study we evaluated whether Es maintains its anti-obesity effect through Es-altered gut microbiota (EsM) transplantation. GM was isolated from cecal contents of Es treated and untreated rats following repeated transplants into obese rats via oral gavage over three weeks...
May 23, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28542544/development-and-characterization-of-an-experimental-model-of-diet-induced-metabolic-syndrome-in-rabbit
#10
Oscar Julián Arias-Mutis, Vannina G Marrachelli, Amparo Ruiz-Saurí, Antonio Alberola, Jose Manuel Morales, Luis Such-Miquel, Daniel Monleon, Francisco J Chorro, Luis Such, Manuel Zarzoso
Metabolic syndrome (MetS) has become one of the main concerns for public health because of its link to cardiovascular disease. Murine models have been used to study the effect of MetS on the cardiovascular system, but they have limitations for studying cardiac electrophysiology. In contrast, the rabbit cardiac electrophysiology is similar to human, but a detailed characterization of the different components of MetS in this animal is still needed. Our objective was to develop and characterize a diet-induced experimental model of MetS that allows the study of cardiovascular remodeling and arrhythmogenesis...
2017: PloS One
https://www.readbyqxmd.com/read/28540475/-intestinal-microbiota-in-individualized-therapies
#11
REVIEW
T Witte, D H Pieper, B Heidrich
During recent years, the analysis of the human microbiota has been receiving more and more scientific focus. Deep sequencing analysis enables characterization of microbial communities in different environments without the need of culture-based methods. Hereby, information about microbial communities is increasing enormously. Numerous studies in humans and animal models revealed the important role of the microbiome in emergence and natural course of diseases such as autoimmune diseases and metabolic disorders, e...
May 24, 2017: Der Internist
https://www.readbyqxmd.com/read/28522975/hypoxia-and-inactivity-related-physiological-changes-constipation-inflammation-are-not-reflected-at-the-level-of-gut-metabolites-and-butyrate-producing-microbial-community-the-planhab-study
#12
Robert Šket, Nicole Treichel, Tadej Debevec, Ola Eiken, Igor Mekjavic, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the run-in (5 day) and experimental phases [21-day normoxic bed rest (NBR), hypoxic bedrest (HBR)], and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, 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 133.1 ± 0.3 mmHg for NBR and 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28521872/non-alcoholic-fatty-liver-disease-an-update-with-special-focus-on-the-role-of-gut-microbiota
#13
REVIEW
Michael Doulberis, Georgios Kotronis, Dimitra Gialamprinou, Jannis Kountouras, Panagiotis Katsinelos
Non-alcoholic fatty liver disease (NAFLD) is a significant global health burden in children, adolescents and adults with substantial rise in prevalence over the last decades. Accumulating data from manifold studies support the idea of NAFLD as a hepatic manifestation of metabolic syndrome, being rather a systemic metabolic disease than a liver confined pathology. Emerging data support that the gut microbiome represents a significant environmental factor contributing to NAFLD development and progression. Apart from other regimens, probiotics may have a positive role in the management of NAFLD through a plethora of possible mechanisms...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28506730/-the-human-gut-microbiota-interactions-with-the-host-and-dysfunctions
#14
P Lepage
The human intestinal microbiota is composed of approximately 100,000 billion microorganisms with the average total number of different commensal bacterial species estimated at over 500 per individual. The human intestinal microbiota can be considered as an organ within another, which co-evolved with its host to achieve a symbiotic relationship leading to physiological homeostasis. The host provides an environment enriched in nutrients and the microbiota provides essential functions. Dysbiosis of the intestinal microbiota (changes in bacterial composition) has been associated with local dysfunctions of the gastrointestinal tract, such as inflammatory bowel disease or irritable bowel syndrome but also with obesity and metabolic diseases...
May 12, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28501098/alterations-in-intestinal-microbiota-relate-to-intestinal-failure-associated-liver-disease-and-central-line-infections
#15
Panliang Wang, Ying Wang, Lina Lu, Weihui Yan, Yijing Tao, Kejun Zhou, Jie Jia, Wei Cai
BACKGROUND: The gut microbiota plays a vital role in modulating the metabolic and immune functions of the intestines. We aimed to analyze the dysbiosis of microbiota in infants with short bowel syndrome (SBS) with different complications. PROCEDURE: We included 26 fecal samples from 18 infants with SBS during parenteral nutrition. The samples were categorized into three groups: asymptomatic, parenteral nutrition-associated liver disease (PNALD), and central line-associated bloodstream infection (CLABSI)...
May 3, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28495997/extracellular-vesicles-in-metabolic-syndrome
#16
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/28463404/a-synbiotic-composed-of-lactobacillus-fermentum-cect5716-and-fos-prevents-the-development-of-fatty-acid-liver-and-glycemic-alterations-in-rats-fed-a-high-fructose-diet-associated-with-changes-in-the-microbiota
#17
Belén Rivero-Gutiérrez, Reyes Gámez-Belmonte, María Dolores Suárez, José Luis Lavín, Ana María Aransay, Mónica Olivares, Olga Martínez-Augustin, Fermín Sánchez de Medina, Antonio Zarzuelo
We investigated the effect of a high fructose diet (HFD) on Sprague Dawley rats and the impact of a synbiotic composed of Lactobacillus fermentum CECT5716 and fructooligosaccharides. Feeding the HFD for 5 weeks resulted in liver steatosis and insulin resistance but not obesity. These changes were associated with increased production of short-chain fatty acids and increased Bacteroidetes in feces, with an augmented Bacteroidetes/Firmicutes ratio, among other changes in the microbiota. In addition, barrier function was weakened, with increased LPS plasma levels...
May 2, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28462587/conditionally-pathogenic-gut-microbes-promote-larval-growth-by-increasing-redox-dependent-fat-storage-in-high-sugar-diet-fed-drosophila
#18
Tae Woong Whon, Na-Ri Shin, Mi-Ja Jung, Dong-Wook Hyun, Hyun Sik Kim, Pil Soo Kim, Jin-Woo Bae
AIMS: Changes in the composition of the gut microbiota contribute to the development of obesity and subsequent complications that are associated with metabolic syndrome. However, the role of increased numbers of certain bacterial species during the progress of obesity and factor(s) controlling the community structure of gut microbiota remain unclear. Here, we demonstrate the inter-relationship between Drosophila melanogaster and their resident gut microbiota under chronic high-sugar diet (HSD) conditions...
May 24, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28429701/-microbiota-and-metabolic-syndrome
#19
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/28425133/fecal-microbiota-signatures-of-adult-patients-with-different-types-of-short-bowel-syndrome
#20
Yuhua Huang, Feilong Guo, Yousheng Li, Jian Wang, Jieshou Li
BACKGROUND AND AIM: Short bowel syndrome (SBS) is a common cause of intestinal failure and can be divided into three types depending on intestinal anatomy. Gut dysbiosis has been observed in pediatric SBS patients and is associated with impaired outcome. Little is known about the changes in gut microbiota of adult SBS patients. Therefore, we aim to characterize the fecal microbiota of adult patients with different types of SBS. METHODS: Fifteen fecal samples from healthy controls and adult patients with type II or type III SBS were collected (five in each group)...
April 19, 2017: Journal of Gastroenterology and Hepatology
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