Antibiotic in colonic lumen

Antibiotic in colonic lumen" refers not to a single molecule or therapeutic target but to any antibiotic compound that reaches the lumen of the colon after systemic, oral, or enema administration[3][4][2]. In the context of human health and disease, the presence of antibiotics in the colonic lumen affects the composition and function of the gut microbiota, disrupts the colonic mucus barrier, alters nutrient and metabolite profiles, and may influence susceptibility to certain infections or inflammatory responses[3][4][2][1]. For example, broad-spectrum antibiotics are well-documented to reduce the abundance of protective commensal bacteria, break down the mucus barrier, and facilitate colonization by pathogenic or drug-resistant bacteria such as carbapenem-resistant Enterobacteriaceae (CRE)[2][3][1]. However, "Antibiotic in colonic lumen" is *not* a molecular entity or receptor and should not be listed as a target for drug discovery or mechanistic annotation. If actual antibiotic molecules are intended as targets, those should be specified individually (e.g., "Ciprofloxacin," "Vancomycin") rather than the generic spatial context in the colon.

Other names

Colonic luminal antibioticAntibiotic exposure in colon