Toward a design of affordable, topical microbicides: acylcarnitine analogues.

Abstract:

:Most heterosexual women want to reduce the risk of acquiring a sexually transmitted infection; many also want to control their fertility. Several chemical agents have been proposed to dramatically slow the spread of HIV infections. Ideally, vaginal microbicides, with or without contraceptive properties, should be safe, effective, and affordable for women everywhere. Amphiphiles, which are surfactants that can act as detergents, have a long history as microbicides against many pathogens. Amphiphiles have several desirable traits; e.g., they are inexpensive, fast-acting, and capable of a broad spectrum of activity. An "ideal" amphiphilic microbicide will rapidly and selectively inactivate pathogens and sperm without irritating tissue. In this review, we discuss a homologous series of amphiphilic acylcarnitine analogues as microbicides. Two homologues, Z-14 and Z-15, possess excellent spermicidal, anti-HIV, anti-chlamydial, anti-gonorrhea, and anti-Haemophilus activities; both have outstanding anti-Candida activity. A 4% Z-15 gel that is comprised of 3% carboxymethylcellulose in water gives a dramatically low score in a rabbit-vaginal-irritation study. The mechanisms of action of these compounds are not fully understood as yet, but we present several possibilities. Moreover, the results of our limited structure-activity study with a homologous series have stimulated additional questions and ideas for designing the next generation of microbicidal amphiphiles. The above studies support the idea that Z-14 and Z-15 can potentially serve as safe (non-irritating), effective topical microbicides.

journal_name

Curr Pharm Des

authors

Gandour RD

doi

10.2174/138161205774580705

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

3757-67

issue

29

eissn

1381-6128

issn

1873-4286

journal_volume

11

pub_type

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