Autor(es):
Syrjänen, Stina ; Naud, Paulo ; Sarian, Luis ; Derchain, Sophie ; Roteli-Martins, Cecilia ; Longatto, Adhemar ; Tatti, Silvio ; Branca, Margerita ; Erzen, Mojca ; Hammes, Luciano S. ; Costa, Silvano ; Syrjänen, Kari
Data: 2009
Identificador Persistente: https://hdl.handle.net/1822/67649
Origem: RepositóriUM - Universidade do Minho
Assunto(s): Biomarkers, Tumor; Cell Nucleus; Cervical Intraepithelial Neoplasia; DNA, Viral; Disease Progression; Female; Humans; Immunohistochemistry; Papillomaviridae; Papillomavirus Infections; Plasminogen Activator Inhibitor Type 2; Predictive Value of Tests; Up-Regulation; Uterine Cervical Neoplasms; Viral Load; High-risk human papillomavirus; HPV; PAI-2; Serpin-B2; Cytoplasmic; Nuclear; CIN; Baseline; Viral outcomes; Longitudinal predictive values; Surrogate end points
Descrição
Protease inhibitor serpin-B2 (plasminogen activator inhibitor-2 [PAI-2]) protects pRb from degradation in human papillomavirus (HPV)-18+ HeLa cells. Our objective was to assess whether the pRb-mediated HPV-suppressive effect of PAI-2 in cancer cell lines has implications in the outcome of HPV infections. Cervical biopsy specimens from 225 women were analyzed for PAI-2 expression to assess its value as a predictor of cervical intraepithelial neoplasia (CIN) grade, high-risk (HR) HPV at baseline, outcomes of HR-HPV infections, and the development of incident CIN. PAI-2 expression increased in parallel with lesion grade. Nuclear PAI-2 expression was significantly related to HR-HPV detection and had a linear relationship with HR-HPV load. PAI-2 expression was of no value in predicting the outcomes of HR-HPV infections. The same was true for PAI-2 as a predictor of surrogate end points (incident CIN 1+, CIN 2+) of progressive disease. PAI-2 expression is up-regulated on transition from CIN 2 to CIN 3. The HR-HPV suppressive effects of PAI-2 were not related to more favorable outcomes of HR-HPV infections or lower risk of disease progression to CIN.
