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Clinical and Vaccine Immunology, September 2007, p. 1102-1107, Vol. 14, No. 9
1071-412X/07/$08.00+0     doi:10.1128/CVI.00386-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Cervicovaginal Levels of Lactoferrin, Secretory Leukocyte Protease Inhibitor, and RANTES and the Effects of Coexisting Vaginoses in Human Immunodeficiency Virus (HIV)-Seronegative Women with a High Risk of Heterosexual Acquisition of HIV Infection{triangledown}

Richard M. Novak,1* Betty A. Donoval,2 Parrie J. Graham,1 Lucy A. Boksa,1 Gregory Spear,2 Ronald C. Hershow,1 Hua Yun Chen,1 and Alan Landay2

University of Illinois at Chicago,1 Rush University, Chicago, Illinois2

Received 17 October 2006/ Returned for modification 16 January 2007/ Accepted 23 July 2007

Innate immune factors in mucosal secretions may influence human immunodeficiency virus type 1 (HIV-1) transmission. This study examined the levels of three such factors, genital tract lactoferrin [Lf], secretory leukocyte protease inhibitor [SLPI], and RANTES, in women at risk for acquiring HIV infection, as well as cofactors that may be associated with their presence. Women at high risk for HIV infection meeting established criteria (n = 62) and low-risk controls (n = 33) underwent cervicovaginal lavage (CVL), and the CVL fluid samples were assayed for Lf and SLPI. Subsets of 26 and 10 samples, respectively, were assayed for RANTES. Coexisting sexually transmitted infections and vaginoses were also assessed, and detailed behavioral information was collected. Lf levels were higher in high-risk (mean, 204 ng/ml) versus low-risk (mean, 160 ng/ml, P = 0.007) women, but SLPI levels did not differ, and RANTES levels were higher in only the highest-risk subset. Lf was positively associated only with the presence of leukocytes in the CVL fluid (P < 0.0001). SLPI levels were lower in women with bacterial vaginosis [BV] than in those without BV (P = 0.04). Treatment of BV reduced RANTES levels (P = 0.05). The influence, if any, of these three cofactors on HIV transmission in women cannot be determined from this study. The higher Lf concentrations observed in high-risk women were strongly associated with the presence of leukocytes, suggesting a leukocyte source and consistent with greater genital tract inflammation in the high-risk group. Reduced SLPI levels during BV infection are consistent with an increased risk of HIV infection, which has been associated with BV. However, the increased RANTES levels in a higher-risk subset of high-risk women were reduced after BV treatment.

* Corresponding author. Mailing address: University of Illinois at Chicago, 808 S. Wood St., M/C 735, Rm. 888, Chicago, IL 60612. Phone: (312) 996-6763. Fax: (312) 413-1657. E-mail: rmnovak{at}uic.edu

{triangledown} Published ahead of print on 1 August 2007.

Clinical and Vaccine Immunology, September 2007, p. 1102-1107, Vol. 14, No. 9
1071-412X/07/$08.00+0     doi:10.1128/CVI.00386-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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