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  • Title: High levels of HPV-16 DNA are associated with high-grade cervical lesions in women at risk or infected with HIV.
    Author: Fontaine J, Hankins C, Mayrand MH, Lefevre J, Money D, Gagnon S, Rachlis A, Pourreaux K, Ferenczy A, Coutlée F, Canadian Women's HIV Study Group.
    Journal: AIDS; 2005 May 20; 19(8):785-94. PubMed ID: 15867492.
    Abstract:
    OBJECTIVE: To examine associations between levels of episomal and integrated human papillomavirus (HPV) 16 DNA and the grade of cervical disease. DESIGN: Cross-sectional data were obtained from a cohort of women with and without HIV infection and with high-risk sexual behaviour. METHODS: Episomal and integrated HPV-16 DNA loads were measured in cervicovaginal lavages collected from 75 women (58 HIV seropositive, 17 HIV seronegative) using real-time polymerase chain reaction assays, controlling for cell content and the presence of inhibitors. RESULTS: HPV-16 viral loads were significantly higher in women with high-grade squamous intraepithelial lesions (n = 6) than in women with normal cytology (n = 44), whether total (10(8.28) versus 10(5.10) HPV-16 DNA copies/microg DNA), episomal (10(7.99) versus 10(4.61)) or integrated (10(7.95) versus 10(4.77)) HPV-16 viral loads were measured (P < 0.02 for each comparison). Thirty-nine women had colposcopy [11 normal cervix, 16 cervical intraepithelial neoplasia (CIN) 1, six CIN 2, six CIN 3] and 24 additional women had three consecutive normal cytology smears. Controlling for age, race, CD4 cell count and HIV status, total (OR 3.5, 95% CI 1.2-10.4; P = 0.02), episomal (OR 2.9, 95% CI 1.2-7.4; P = 0.02,) and integrated (OR 1.6, 95% CI 1-2.6; P = 0.05) HPV-16 DNA loads were significantly associated with CIN 2,3, but the differences between CIN 1 and CIN 2,3 were not significant (P > 0.06). A greater amount of cellular DNA was collected from women with CIN 2,3 (P = 0.007). CONCLUSION: Higher HPV-16 DNA loads are associated with cervical lesions detected by either histology or cytology. No additional information is gained by measuring integrated or episomal over total HPV-16 DNA loads.
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