title: Association between cervical lesion grade and micronucleus frequency in the Papanicolaou test.
abstract: The aim of this study was to evaluate the association between the frequency of micronuclei (MN) and the cellular changes detected in the conventional Papanicolaou test. One hundred and seventy-four Papanicolaou test smears with cellular changes were examined. MN screening was done in cytopathological smears by counting 1,000 cervical cells in a light microscope. MN frequencies were significantly higher in the group with cellular changes compared to the control group (p < 0.001). The mean MN frequencies were 0.95 ± 1.12 (mean ± SD) in the control group (n = 223), 2.98 ± 1.20 in individuals with atypical squamous cells of undetermined significance (ASC-US) (n = 50), 4.04 ± 1.45 in cervical intraepithelial neoplasia (CIN) I (n = 52), 5.97 ± 1.83 in CIN II (n = 30), 7.29 ± 1.55 in CIN III (n = 17) and 8.64 ± 1.55 in invasive cancer (n = 25). These findings suggest that MN monitoring should be included as an additional criterion for the early detection of cytogenetic damage in routine examinations. This monitoring should be done in the same smear as used for cytopathological examination. More specific and systematic studies are necessary to confirm this proposal.
authors.affiliation: Curso de Graduação em Biomedicina , Universidade Luterana do Brasil , Canoas, RS , Brazil .
authors.forename: Caroline Tanski
authors.initials: CT
authors.lastname: Bueno
authors.affiliation: Centro de Desenvolvimento Científico e Tecnológico , Fundação Estadual de Produção e Pesquisa em Saúde , Porto Alegre, RS , Brazil .
authors.forename: Cláudia Maria
authors.initials: CM
authors.lastname: Dornelles da Silva
authors.affiliation: Centro de Desenvolvimento Científico e Tecnológico , Fundação Estadual de Produção e Pesquisa em Saúde , Porto Alegre, RS , Brazil .
authors.forename: Regina Bones
authors.initials: RB
authors.lastname: Barcellos
authors.affiliation: Laboratório de Genética Toxicológica , Programa de Pós-graduação em Genética e Toxicologia Aplicada , Universidade Luterana do Brasil , Canoas, RS , Brazil .
authors.forename: Juliana
authors.initials: J
authors.lastname: da Silva
authors.affiliation: Curso de Graduação em Biomedicina , Universidade Luterana do Brasil , Canoas, RS , Brazil .
authors.forename: Carla Rossana
authors.initials: CR
authors.lastname: Dos Santos
authors.affiliation: Laboratório Cediclin , Canoas, RS , Brazil .
authors.forename: João Evangelista Sampaio
authors.initials: JE
authors.lastname: Menezes
authors.affiliation: Laboratório Cediclin , Canoas, RS , Brazil . ; Instituto de Cardiologia, Fundação Universidade de Cardiologia , Porto Alegre, RS , Brazil .
authors.forename: Honório Sampaio
authors.initials: HS
authors.lastname: Menezes
authors.affiliation: Centro de Desenvolvimento Científico e Tecnológico , Fundação Estadual de Produção e Pesquisa em Saúde , Porto Alegre, RS , Brazil . ; Programa de Pós-graduação em Genética e Toxicologia Aplicada , Universidade Luterana do Brasil , Canoas, RS , Brazil .
authors.forename: Maria Lucia Rosa
authors.initials: ML
authors.lastname: Rossetti
keywords: Papanicolaou test; cervical cancer; cervical lesions; micronucleus