Circuit-specific enteric #glia regulate #intestinal motor neurocircuits

Neurons have long been considered the main active cell type within the circuitry of the enteric nervous system (ENS), giving rise to a neurocentric paradigm that has tended to overlook the role of enteric glia as key regulators of gut motility. Understanding how simple synapse-level interactions give rise to complex, network-level behaviors remains a fundamental …

Continue reading Circuit-specific enteric #glia regulate #intestinal motor neurocircuits

#Bile Acids Signal via TGR5 to Activate #Intestinal Stem Cells and Epithelial Regeneration

Renewal and patterning of the intestinal epithelium is coordinated by intestinal stem cells (ISCs); dietary and metabolic factors provide signals to the niche that control ISC activity. Bile acids (BAs), metabolites in the gut, signal nutrient availability by activating the G protein-coupled bile acid receptor 1 (GPBAR1, also called TGR5). TGR5 is expressed in the …

Continue reading #Bile Acids Signal via TGR5 to Activate #Intestinal Stem Cells and Epithelial Regeneration

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

Central sensory-motor crosstalk in the neural gut-brain axis

The neural gut-brain axis consists of viscerosensory and autonomic motor neurons innervating the gastrointestinal (GI) tract. Sensory neurons transmit nutrient-related and non-nutrient-related information to the brain, while motor neurons regulate GI motility and secretion. Previous research provides an incomplete picture of the brain nuclei that are directly connected with the neural gut-brain axis, and no …

Continue reading Central sensory-motor crosstalk in the neural gut-brain axis