Given the fundamental role played by the intestinal microbial community in influencing host health, it is not surprising that recent decades have been marked by increased efforts to determine the taxonomic composition of the human gut microbiota and its associated functions. Despite their generally accepted importance, these large-scale human-centered studies prevent an exhaustive overview of those mechanisms and factors that contribute to the mammalian gut microbiota assembly. However, Next-Generation Sequencing techniques and associated bioinformatic tools provide an exciting opportunity to rapidly expand our knowledge on the intestinal microbial communities associated with members of the Mammalia class. These non-human-focused studies established that dietary, host phylogeny, host physiology and anthropogenic influences represent the main factors driving the selection of a specific gut microbial consortium in mammals. The current review is aimed at providing a comprehensive overview on the impact that the above-mentioned factors exert on the assembly of the mammalian gut microbiota.
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http://dx.doi.org/10.1016/j.copbio.2021.06.028 | DOI Listing |
Circ Res
January 2025
Hypertension Research Laboratory, School of Biological Sciences (R.R.M., T.Z., E.D., L.X., A.B.-W., H.A.J., M.N., M.P., K.C.L., W.Q., J.A.O.D., F.Z.M.).
Background: Fermentation of dietary fiber by the gut microbiota leads to the production of metabolites called short-chain fatty acids, which lower blood pressure and exert cardioprotective effects. Short-chain fatty acids activate host signaling responses via the functionally redundant receptors GPR41 and GPR43, which are highly expressed by immune cells. Whether and how these receptors protect against hypertension or mediate the cardioprotective effects of dietary fiber remains unknown.
View Article and Find Full Text PDFJ Oral Microbiol
January 2025
Integrative Microecology Clinical Center, Shenzhen Clinical Research Center for Digestive Disease, Shenzhen Technology Research Center of Gut Microbiota Transplantation, The Clinical Innovation & Research Center, Shenzhen Key Laboratory of Viral Oncology, Department of Clinical Nutrition, Shenzhen Hospital, Southern Medical University, Shenzhen, China.
Background: This study aims to develop an oral microbiota-based model for gastric cancer (GC) risk stratification and prognosis prediction.
Methods: Oral microbial markers for GC prognosis and risk stratification were identified from 99 GC patients, and their predictive potential was validated on an external dataset of 111 GC patients. The identified bacterial markers were used to construct a Deep Neural Network (DNN) model, a Random Forest (RF) model, and a Support Vector Machine (SVM) model for predicting GC prognosis.
Front Vet Sci
January 2025
Gansu Key Laboratory of Herbivorous Animal Biotechnology, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China.
Meat quality is a key indicator of meat performance in ruminants, and its mechanism and regulation are also key to ruminant research. Studies have shown that animal meat quality is related to the gut microbiota. In this study, RT-qPCR and 16S omics were employed to assess meat quality and intestinal microbiota.
View Article and Find Full Text PDFFront Pharmacol
January 2025
Heat Stroke Treatment and Research Center of Chinese PLA General Hospital, Sanya, China.
Exertional heat stroke (EHS) is a life-threatening condition characterized by hyperthermia and multi-organ dysfunction, often associated with intestinal barrier disruption. This study evaluated the protective effects of Huoxiang Zhengqi Dropping Pills (HXZQD) against EHS in a rat model. HXZQD was administered via oral gavage at low, medium, and high doses, followed by EHS induction through exercise under high-temperature and high-humidity conditions.
View Article and Find Full Text PDFFront Immunol
January 2025
Institute of Medical Genetics and Reproductive Immunity, School of Medical Science and Laboratory Medicine, Jiangsu College of Nursing, Huai'an, China.
The intestinal epithelium, beyond its role in absorption and digestion, serves as a critical protective mechanical barrier that delineates the luminal contents and the gut microbiota from the lamina propria within resident mucosal immune cells to maintain intestinal homeostasis. The barrier is manifested as a contiguous monolayer of specialized intestinal epithelial cells (IEC), interconnected through tight junctions (TJs). The integrity of this epithelial barrier is of paramount.
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