Viral characteristics of human papillomavirus infection and antioxidant levels as risk factors for cervical dysplasia.
Genital human papillomavirus (HPV) infection is the major causal factor of cervical intraepithelial neoplasia (CIN).
The potential role of nutrition as an additional, independent risk factor for CIN has not been appropriately addressed in the context of HPV.
This case-control study evaluated the etiologic role of HPV in terms of viral type and load and examined the association between CIN and plasma levels of micronutrients adjusting for HPV.
Cases (n=378) with histo-pathologically confirmed CIN and controls (n=366) with no history of abnormal Pap smears were recruited from colposcopy and gynecology clinics, respectively.
Risk of CIN was significantly increased among women who were infected with multiple HPV types (odds ratio [OR]=21.06), a high viral load (OR=13.08) and HPV 16 (OR=62.49).
After adjusting for HPV positivity and demographic factors, there was an inverse correlation between plasma alpha-tocopherol and risk of CIN (OR=0.15).
Plasma ascorbic acid was protective at a high level of >=0.803 mgldl (OR=0.46).
CIN was not associated with plasma retinol and bêta-carotene levels.
The effect of genital HPV infection on CIN development is highly influenced by oncogenic viral type and high viral load.
Vitamins C and E may play an independent protective role in development of CIN that needs to be confirmed in prospective studies.
Mots-clés Pascal : Dysplasie, Col utérus, Virose, Infection, Papillomavirus humain, Papillomavirus, Papovaviridae, Virus, Souche, Antioxydant, Micronutriment, Rétinol, Carotène, Tocophérol, Acide ascorbique, Vitamine, Facteur risque, Epidémiologie, Etiologie, Etats Unis, Amérique du Nord, Amérique, Etude cas témoin, Homme, Lésion précancéreuse, Col utérus pathologie, Appareil génital femelle pathologie, Charge virale
Mots-clés Pascal anglais : Dysplasia, Uterine cervix, Viral disease, Infection, Human papillomavirus, Papillomavirus, Papovaviridae, Virus, Strain, Antioxidant, Micronutrient, Retinol, Carotene, Tocopherol, Ascorbic acid, Vitamin, Risk factor, Epidemiology, Etiology, United States, North America, America, Case control study, Human, Premalignant lesion, Uterine cervix diseases, Female genital diseases, Viral load
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0522573
Code Inist : 002B20C02. Création : 23/03/1999.