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Session 149 Poster Abstracts
HIV Prevention: Microbicides and Transmission Models
Session Day and Time: Monday, 1:30 - 3:30 pm
Poster Hall


897
Non-barrier Contraception Increases Mononuclear Cells at the Endocervical Mucosa of Healthy Women
Manyu Prakash*1, S Patterson1, and M Kapembwa2
1Imperial Coll of Sci Tech & Med, Northwick Park and St Marks Hosp, Middlesex, UK and 2Imperial Coll of Sci Tech & Med, Chelsea and Westminster Hosp, London, UK

 

The principal role of contraception is to prevent pregnancy. However, secondary functional and morphological changes may occur in genital tract mucosa. This study examined the effect of non-barrier and barrier contraception on T lymphocyte subsets and macrophages at the intraepithelial layer of the endocervix of healthy women. Mucosal cells were recovered using a cytobrush and analysed by flow cytometry. An increase of T lymphocytes (CD4+ P<0.001, CD8+ P<0.01) and macrophages (P<0.005) was observed in women using non-barrier contraception compared to barrier method users. A further comparison between individual contraceptive users and non-users demonstrated increased mononuclear cell subsets in women using the intra-uterine device (CD4+ P<0.05), combined oral contraceptives (CD4+ P<0.01, CD8+ P<0.05, CD14+ P<0.05) and no contraception  (CD4+ P<0.05, CD14+ P<0.02).  These findings suggest cell subpopulations in the cervical mucosa can be influenced by the type of contraception used.  Increased endocervical mononuclear cells among non-barrier contraceptive users suggest heightened local recruitment that could be a possible factor in the transmission of HIV-1.