Mechanism of action, resistance, synergism, and clinical implications of azithromycin

J Clin Lab Anal. 2022 Jun;36(6):e24427. doi: 10.1002/jcla.24427. Epub 2022 Apr 21.

Abstract

Background: Azithromycin (AZM), sold under the name Zithromax, is classified as a macrolide. It has many benefits due to its immunomodulatory, anti-inflammatory, and antibacterial effects. This review aims to study different clinical and biochemisterial aspects and properties of this drug which has a priority based on literature published worldwide.

Methods: Several databases including Web of Science, Google Scholar, PubMed, and Scopus were searched to obtain the relevant studies.

Results: AZM mechanism of action including the inhibition of bacterial protein synthesis, inhibition of proinflammatory cytokine production, inhibition of neutrophil infestation, and macrophage polarization alteration, gives it the ability to act against a wide range of microorganisms. Resistant organisms are spreading and being developed because of the irrational use of the drug in the case of dose and duration. AZM shows synergistic effects with other drugs against a variety of organisms. This macrolide is considered a valuable antimicrobial agent because of its use as a treatment for a vast range of diseases such as asthma, bronchiolitis, COPD, cystic fibrosis, enteric infections, STIs, and periodontal infections.

Conclusions: Our study shows an increasing global prevalence of AZM resistance. Thus, synergistic combinations are recommended to treat different pathogens. Moreover, continuous monitoring of AZM resistance by registry centers and the development of more rapid diagnostic assays are urgently needed.

Keywords: Zithromax; azithromycin; pharmacology; resistance; synergism.

Publication types

  • Review

MeSH terms

  • Anti-Bacterial Agents / pharmacology
  • Anti-Bacterial Agents / therapeutic use
  • Azithromycin* / pharmacology
  • Azithromycin* / therapeutic use
  • Bacterial Proteins
  • Cystic Fibrosis* / drug therapy
  • Cystic Fibrosis* / microbiology
  • Humans

Substances

  • Anti-Bacterial Agents
  • Bacterial Proteins
  • Azithromycin