Recent explorations of the human gut microbiota suggest that perturbations of microbial communities may increase predisposition to different disease phenotypes. Dietary nutrients may be converted into metabolites by intestinal microbes that serve as biologically active molecules affecting regulatory functions in the host. Probiotics may restore the composition of the gut microbiome and introduce beneficial functions… Continue reading Effects of #probiotics on gut #microbiota: mechanisms of intestinal immunomodulation and neuromodulation
Tag: gut-microbiota
Vitamin #D metabolites and the gut #microbiome in older men
The vitamin D receptor is highly expressed in the gastrointestinal tract where it transacts gene expression. With current limited understanding of the interactions between the gut microbiome and vitamin D, we conduct a cross-sectional analysis of 567 older men quantifying serum vitamin D metabolites using LC-MSMS and defining stool sub-Operational Taxonomic Units from16S ribosomal RNA… Continue reading Vitamin #D metabolites and the gut #microbiome in older men
Gut #microbiota depletion by chronic antibiotic treatment alters the #sleep/wake architecture and sleep #EEG power spectra in mice
Dysbiosis of the gut microbiota affects physiological processes, including brain functions, by altering the intestinal metabolism. Here we examined the effects of the gut microbiota on sleep/wake regulation. C57BL/6 male mice were treated with broad-spectrum antibiotics for 4 weeks to deplete their gut microbiota. Metabolome profiling of cecal contents in antibiotic-induced microbiota-depleted (AIMD) and control… Continue reading Gut #microbiota depletion by chronic antibiotic treatment alters the #sleep/wake architecture and sleep #EEG power spectra in mice
The gut #microbiota is associated with #immune cell dynamics in humans
The gut microbiota influences development and homeostasis of the mammalian immune system, and is associated with human inflammatory and immune diseases as well as responses to immunotherapy. Nevertheless, our understanding of how gut bacteria modulate the immune system remains limited, particularly in humans, where the difficulty of direct experimentation makes inference challenging. Here we study… Continue reading The gut #microbiota is associated with #immune cell dynamics in humans
Dietary #Fructose Alters the Composition, Localization and Metabolism of Gut #Microbiota in Association with Worsening #Colitis
The incidence of inflammatory bowel diseases has increased over the last half century, suggesting a role for dietary factors. Fructose consumption has increased in recent years. Recently, a high fructose diet (HFrD) was shown to enhance DSS-induced colitis in mice. The primary objectives of the current study were to elucidate the mechanism(s) underlying the pro-colitic… Continue reading Dietary #Fructose Alters the Composition, Localization and Metabolism of Gut #Microbiota in Association with Worsening #Colitis
Depicting #SARS-CoV-2 faecal viral activity in association with #gut microbiota composition in patients with COVID-19
Although severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA was detected in faeces of patients with COVID-19, the activity and infectivity of the virus in the GI tract during disease course is largely unknown. We investigated temporal transcriptional activity of SARS-CoV-2 and its association with longitudinal faecal microbiome alterations in patients with COVID-19.. Seven (46.7%)… Continue reading Depicting #SARS-CoV-2 faecal viral activity in association with #gut microbiota composition in patients with COVID-19
Warmth Prevents #Bone Loss Through the Gut #Microbiota
Osteoporosis is the most prevalent metabolic bone disease, characterized by low bone mass and microarchitectural deterioration. Here, we show that warmth exposure (34°C) protects against ovariectomy-induced bone loss by increasing trabecular bone volume, connectivity density, and thickness, leading to improved biomechanical bone strength in adult female, as well as in young male mice. Transplantation of… Continue reading Warmth Prevents #Bone Loss Through the Gut #Microbiota
Association Between the Gut #Microbiota and Blood #Pressure in a Population Cohort of 6953 Individuals
Several small‐scale animal studies have suggested that gut microbiota and blood pressure (BP) are linked. However, results from human studies remain scarce and conflicting. We wanted to elucidate the multivariable‐adjusted association between gut metagenome and BP in a large, representative, well‐phenotyped population sample. We performed a focused analysis to examine the previously reported inverse associations… Continue reading Association Between the Gut #Microbiota and Blood #Pressure in a Population Cohort of 6953 Individuals
High-Fat Diet and Antibiotics Cooperatively Impair Mitochondrial Bioenergetics to Trigger #Dysbiosis that Exacerbates Pre-inflammatory Bowel Disease
The clinical spectra of irritable bowel syndrome (#IBS) and inflammatory bowel disease (#IBD) intersect to form a scantily defined overlap syndrome, termed pre-IBD. We show that increased Enterobacteriaceae and reduced Clostridia abundance distinguish the fecal microbiota of pre-IBD patients from IBS patients. A history of antibiotics in individuals consuming a high-fat diet was associated with… Continue reading High-Fat Diet and Antibiotics Cooperatively Impair Mitochondrial Bioenergetics to Trigger #Dysbiosis that Exacerbates Pre-inflammatory Bowel Disease
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