Microbicides and HIV: A Review and an update

Area of Science:

• Virology
• Public Health
• Pharmacology

Background:

• HIV remains a significant global health challenge, with lifelong suppressive treatment but no cure.
• Traditional prevention strategies face societal and behavioral barriers, and an HIV vaccine is not yet available.

Purpose of the Study:

• To review the current landscape of microbicides as topical pre-exposure prophylaxis (PrEP) for HIV prevention.
• To categorize microbicides based on their mechanism of action in disrupting HIV transmission pathways.
• To discuss ongoing clinical trials and emerging microbicide approaches.

Main Methods:

• Literature review of microbicide classes and their development.
• Analysis of various formulation types including gels, foams, rings, and films.
• Examination of novel pipeline approaches such as antimicrobial peptides and RNA interference.

Main Results:

• Microbicides are topical agents applied vaginally or rectally to prevent HIV and other sexually transmitted infections.
• Diverse formulations exist, offering various delivery methods for microbicides.
• Several classes of microbicides are under investigation, targeting different stages of HIV transmission.

Conclusions:

• Microbicides represent a vital advancement in HIV prevention, complementing existing strategies.
• Ongoing research into novel compounds and delivery systems holds significant promise for future HIV prevention tools.
• The development of effective microbicides is crucial for controlling the HIV pandemic.