Candida Infections and Human Defensins

Area of Science:

• Immunology
• Microbiology
• Biochemistry

Background:

• Candida species infections pose a global health challenge, affecting both immunocompromised and healthy individuals.
• The innate immune response, particularly antimicrobial peptides called defensins, serves as a primary defense against Candida.
• Defensins are produced at mucosal surfaces and exhibit activity against bacteria, viruses, and fungi.

Purpose of the Study:

• To review existing literature on defensins in the context of Candida spp. infections.
• To investigate and clarify the precise anti-fungal mechanisms employed by defensins.

Main Methods:

• A comprehensive literature search was conducted in PubMed and Google Scholar databases.
• Studies published between 1985 and 2017 were identified using keywords: "Candida", "Defensins", "Innate immune system", "fungi".

Main Results:

• Defensins play a critical role in the immune response against Candida infections.
• Defensins can differentiate between host and fungal cells by recognizing the unique composition of the fungal cell wall.
• Defensins disrupt the fungal cell wall through membrane permeabilization.

Conclusions:

• Defensins are key players in combating Candida infections due to their pathogen-specific cell wall recognition and disruption.
• Additional research is necessary to fully elucidate the mechanisms of defensin action against Candida albicans and other Candida species.
• Current understanding of defensin anti-fungal mechanisms is incomplete.