Seminal plasma reduces the effectiveness of topical polyanionic microbicides

Sarju Patel, Ehsan Hazrati, Natalia V. Cheshenko, Benjamin T. Galen, Heyi Yang, Esmeralda Guzman, Rong Wang, Betsy Herold, Marla J. Keller

Research output: Contribution to journalArticle

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Abstract

The objective of this study was to test the activity of microbicides against herpes simplex virus type 2 (HSV-2) introduced in seminal plasma. We found that seminal plasma interfered with the activity of PRO 2000 and of cellulose sulfate, increasing by 100-fold the concentration of drug required to inhibit 90% of viral plaque formation. Seminal plasma competitively inhibited binding of the microbicides to the HSV-2 envelope. Most of the interference was found in a high molecular-weight fraction; tandem mass spectrometry identified the proteins as fibronectin-1 and lactoferrin. In a murine model, the interference translated in vivo into a loss in protection. We found that 2% PRO 2000 gel protected 100% of mice challenged intravaginally with HSV-2 introduced in PBS, whereas only 55% of mice were protected if virus was introduced in seminal plasma (P=.0007, log rank test). If these findings are reflective of what occurs in humans, modifications to microbicides to ensure that they retain activity in the presence of seminal plasma are indicated.

Original languageEnglish (US)
Pages (from-to)1394-1402
Number of pages9
JournalJournal of Infectious Diseases
Volume196
Issue number9
DOIs
StatePublished - Nov 1 2007

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Local Anti-Infective Agents
Semen
Human Herpesvirus 2
Anti-Infective Agents
Lactoferrin
Tandem Mass Spectrometry
Fibronectins
Molecular Weight
Gels
Viruses
Pharmaceutical Preparations
Proteins

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Immunology

Cite this

Seminal plasma reduces the effectiveness of topical polyanionic microbicides. / Patel, Sarju; Hazrati, Ehsan; Cheshenko, Natalia V.; Galen, Benjamin T.; Yang, Heyi; Guzman, Esmeralda; Wang, Rong; Herold, Betsy; Keller, Marla J.

In: Journal of Infectious Diseases, Vol. 196, No. 9, 01.11.2007, p. 1394-1402.

Research output: Contribution to journalArticle

Patel, Sarju ; Hazrati, Ehsan ; Cheshenko, Natalia V. ; Galen, Benjamin T. ; Yang, Heyi ; Guzman, Esmeralda ; Wang, Rong ; Herold, Betsy ; Keller, Marla J. / Seminal plasma reduces the effectiveness of topical polyanionic microbicides. In: Journal of Infectious Diseases. 2007 ; Vol. 196, No. 9. pp. 1394-1402.
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