Rifaximin: beyond the traditional antibiotic activity

Fiorella Calanni1, Cecilia Renzulli1, Miriam Barbanti1

  • 1Research and Development Department, Alfa Wassermann SpA, Bologna, Italy.

Insights

Rifaximin, an oral antibiotic, treats gastrointestinal diseases by targeting bacteria and reducing inflammation. Its unique properties offer benefits beyond antibacterial action for gut health.

Area of Science:

  • Pharmacology and microbiology
  • Gastroenterology

Background:

  • Rifaximin is a broad-spectrum oral antibiotic derived from rifampin.
  • Approved in 1987, it treats various gastrointestinal diseases worldwide.

Purpose of the Study:

  • To review the pharmacology and pharmacodynamics of rifaximin.
  • Highlight its actions beyond antibacterial effects.

Main Methods:

  • Literature review of rifaximin's properties.
  • Analysis of its effects on bacterial virulence, adherence, and translocation.
  • Assessment of its anti-inflammatory and microbiota impact.

Main Results:

  • Rifaximin exhibits broad-spectrum antibacterial activity.
  • It modulates bacterial virulence, prevents mucosal adherence, and inhibits translocation.
  • Rifaximin has anti-inflammatory effects with minimal impact on gut microbiota composition.

Conclusions:

  • Rifaximin possesses multifaceted actions beneficial for gastrointestinal health.
  • Its unique pharmacological profile supports its use in treating diverse gut conditions.

Related Concept Videos

Inhibitors of Bacterial DNA Synthesis01:28

Inhibitors of Bacterial DNA Synthesis

Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These...
125
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
6.0K
Inhibitors of Bacterial Protein Synthesis01:25

Inhibitors of Bacterial Protein Synthesis

Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
98
Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents01:18

Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents

Acute diarrhea, a common gastrointestinal disturbance, is characterized by the rapid evacuation of fluid stools, leading to an excessive weight in fluid. This condition typically arises from disorders affecting intestinal water and electrolyte transport. It can be triggered by an increased osmotic load within the intestine, excessive secretion of electrolytes and water, mucosal exudation of protein and fluid, or altered intestinal motility. The primary risks of acute diarrhea are dehydration...
588
Inhibitors of Gram-positive Cell Wall Synthesis01:23

Inhibitors of Gram-positive Cell Wall Synthesis

Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...
178
Antibiotic Selection00:57

Antibiotic Selection

Overview
48.8K