Intestinal microbiota and host intestinal environment

The intestinal microbiota and host intestinal environment represent a complex symbiotic ecosystem comprising trillions of microorganisms, including bacteria, fungi, viruses, and archaea, interacting with the host's epithelial and immune cells (Nature, 2016, https://www.nature.com/articles/nature18849). This system plays a critical role in human health by facilitating nutrient metabolism, synthesizing essential vitamins, and training the host immune system to distinguish between commensal and pathogenic organisms (Science, 2012, https://www.science.org/doi/10.1126/science.1223490). Dysregulation of this environment, known as dysbiosis, is linked to a wide range of conditions, including gastrointestinal diseases like Inflammatory Bowel Disease (IBD) and Clostridioides difficile infection (CDI), as well as systemic metabolic and neurological disorders (NIH, 2012, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3426293/). Therapeutic interventions aim to restore a healthy microbial balance through the use of antibiotics, probiotics, prebiotics, or fecal microbiota transplantation (FDA, 2023, https://www.fda.gov/news-events/press-announcements/fda-approves-first-orally-administered-fecal-microbiota-product-prevent-recurrence-clostridioides). Understanding the bidirectional communication between the microbiota and the host is essential for developing targeted therapies that modulate the intestinal environment to improve clinical outcomes.

Other names

Gut microbiotaGut microbiomeIntestinal floraGastrointestinal microbiomeHost-microbe interface

Modulation of microbial composition, restoration of taxonomic diversity, production of short-chain fatty acids (SCFAs), competitive inhibition of pathogens, and enhancement of host epithelial barrier function.