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Allicin enhances the oxidative damage effect of amphotericin B against Candida albicans

MaoMao An1, Hui Shen, YongBing Cao

  • 1Department of Clinical Pharmacology, Chinese People's Liberation Army General Hospital, Beijing, PR China. maoan168@yahoo.com.cn

International Journal of Antimicrobial Agents
|December 20, 2008
PubMed

Insights

Allicin, a compound from garlic, significantly boosts the antifungal power of Amphotericin B against Candida albicans. This synergy is due to allicin enhancing oxidative damage, offering a promising strategy for invasive fungal infections.

Area of Science:

  • Mycology
  • Pharmacology
  • Biochemistry

Background:

  • Amphotericin B (AmB) is a primary antifungal agent for severe mycoses.
  • Oxidative damage contributes to AmB's fungicidal activity.
  • Candida albicans is a common cause of invasive fungal infections.

Purpose of the Study:

  • To investigate the synergistic effect of allicin and AmB against Candida albicans.
  • To elucidate the mechanism behind the observed synergy.
  • To evaluate the potential of this combination therapy for disseminated candidiasis.

Main Methods:

  • In vitro and in vivo experiments were conducted using Candida albicans.
  • The study assessed the fungicidal activity of AmB alone, allicin alone, and the combination.
  • Mechanistic studies focused on oxidative damage pathways and cellular defense mechanisms.

Main Results:

  • Allicin significantly enhanced the antifungal efficacy of AmB against Candida albicans.
  • Allicin alone showed no significant fungicidal effect.
  • The synergy appears to stem from allicin-induced oxidative damage, specifically phospholipid peroxidation, by impairing the fungus's defense against oxidative stress.

Conclusions:

  • Allicin potentiates the action of Amphotericin B against Candida albicans.
  • The combination therapy targets fungal oxidative stress defenses for enhanced fungicidal activity.
  • Combining AmB with allicin presents a promising therapeutic strategy for disseminated candidiasis.

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