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| Registros recuperados: 34 | |
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| Brenna,S.M.F.; Zeferino,L.C.; Pinto,G.A.; Souza,R.A.; Andrade,L.A.L.; Vassalo,J.; Martinez,E.Z.; Syrjänen,K.J.. |
| The c-myc protein is known to regulate the cell cycle, and its down-regulation can lead to cell death by apoptosis. The role of c-myc protein as an independent prognostic determinant in cervical cancer is controversial. In the present study, a cohort of 220 Brazilian women (mean age 53.4 years) with FIGO stage I, II and III (21, 28 and 51%, respectively) cervical squamous cell carcinomas was analyzed for c-myc protein expression using immunohistochemistry. The disease-free survival and relapse-rate were analyzed using univariate (Kaplan-Meier) survival analysis for 116 women who completed the standard FIGO treatment and were followed up for 5 years. Positive c-myc staining was detected in 40% of carcinomas, 29% being grade 1, 9% grade 2, and 2% grade 3.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C-myc; Oncogene; Cervical cancer; Prognosis. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000400003 |
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| Bueno,Caroline Tanski; Silva,Cláudia Maria Dornelles da; Barcellos,Regina Bones; Silva,Juliana da; Santos,Carla Rossana dos; Menezes,João Evangelista Sampaio; Menezes,Honório Sampaio; Rossetti,Maria Lucia Rosa. |
| 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cervical cancer; Cervical lesions; Micronucleus; Papanicolaou test. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000400004 |
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| Carvalho,M.O.O; Carestiato,F.N; Perdigão,P.H; Xavier,M.P.P.T; Silva,KC; Botelho,M.O; Oliveira,L.H.S.; Cavalcanti,S.M.B.. |
| There is considerable data to support a central role for human papillomavirus (HPV) in the etiology of cervical cancer. More than a 100 HPV types have been described, and 40 have been isolated from benign and malignant genital lesions. Consequently, there is strong motivation to evaluate HPV testing for cervical cancer screening. Few studies concerning the natural history of HPV infection have been conducted in the state of Rio de Janeiro. We determined the prevalence of HPV types in female genital lesions by using Hybrid Capture Assay (HCA) and we retrospectively analyzed the course of HPV infection. Our sample included 788 women attended at Laboratórios Sérgio Franco. The average age of the participants was 29.6 years. HPV prevalence and cytological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HPV; Cervical cancer; Rio de Janeiro; Brazil. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000500007 |
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| Coelho,F.R.G.; Prado,J.C.M.; Pereira Sobrinho,J.S.; Hamada,G.; Landman,G.; Pinto,C.A.; Nonogaki,S.; Villa,L.L.. |
| Estrogen (ER) and progesterone (PR) receptors in the normal uterine cervix, cervical intraepithelial neoplasia and invasive carcinoma were studied in consecutive samples from Hospital do Câncer, São Paulo, between 1996 and 1997. Tissue was collected by removing a fragment of the tumoral area using a 5-mm diameter biopsy punch, followed by removal of a macroscopically normal area as close as possible from the tumor. Histopathological confirmation was obtained for all specimens analyzed. A total of 24 normal tissues, 17 cases of cervical intraepithelial neoplasia and 7 of invasive carcinomas were studied. The ER/PR ratio was determined by immunohistochemistry using monoclonal antibodies specific for each receptor. Adjacent tissue slides were submitted to... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Estrogen receptor; Progesterone receptor; Cervical cancer; Cervical intraepithelial neoplasia; Human papillomavirus. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000100012 |
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| Coimbra,E.C.; Gomes,F.B.; Campos,J.F.; D’arc,M.; Carvalho,J.C.; Mariz,F.C.; Jesus,A.L.S.; Stocco,R.C.; Beçak,W.; Freitas,A.C.. |
| Human papillomavirus (HPV) infection is the most common sexually transmitted disease in the world and is related to the etiology of cervical cancer. The most common high-risk HPV types are 16 and 18; however, the second most prevalent type in the Midwestern region of Brazil is HPV-33. New vaccine strategies against HPV have shown that virus-like particles (VLP) of the major capsid protein (L1) induce efficient production of antibodies, which confer protection against the same viral type. The methylotrophic yeast Pichia pastoris is an efficient and inexpensive expression system for the production of high levels of heterologous proteins stably using a wild-type gene in combination with an integrative vector. It was recently demonstrated that P. pastoris can... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human papillomavirus; Cervical cancer; Pichia pastoris; L1. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001200003 |
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| de Almeida,V.H.; de Melo,A.C.; Meira,D.D.; Pires,A.C.; Nogueira-Rodrigues,A.; Pimenta-Inada,H.K.; Alves,F.G.; Moralez,G.; Thiago,L.S.; Ferreira,C.G.; Sternberg,C.. |
| Cervical cancer is a public health problem and the molecular mechanisms underlying radioresistance are still poorly understood. Here, we evaluated the modulation of key molecules involved in cell proliferation, cell cycle and DNA repair in cervical cancer cell lines (CASKI and C33A) and in malignant tissues biopsied from 10 patients before and after radiotherapy. The expression patterns of epidermal growth factor receptor (EGFR), excision repair cross-complementation group 1 (ERCC1) and p53 were evaluated in cancer cell lines by quantitative PCR and western blotting, and in human malignant tissues by immunohistochemistry. The mutation status of TP53 gene was evaluated by direct sequencing. Among cell lines, absent or weak modulations of EGFR, ERCC1 and p53... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cervical cancer; Radiotherapy; Epidermal growth factor receptor (EGFR); P53; Excision repair cross-complementation group 1 (ERCC1). |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000100608 |
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| Entiauspe,Ludmila G; Silveira,Mariângela; Nunes,Emily M; Basgalupp,Suélen P; Stauffert,Dulce; Dellagostini,Odir A.; Collares,Tiago; Seixas,Fabiana K.. |
| Oncogenic HPV genotypes are strongly associated with premalignant and malignant cervical lesion. The purpose was to determine human papillomavirus (HPV) prevalence and genotypes, and to estimate cervical cancer risk factor associations. Cervical samples were obtained from 251 women seeking gynecological care at the Pelotas School of Medicine Clinic. This is a cross-sectional study. HPV-DNA was amplified by nested-PCR using MY09/11 and GP5/6 primers, and the sequencing was used for genotyping. Sociodemographic and behavioral risk factors were obtained by closed questionnaire, and its relationship to HPV infection prevalence were analyzed. Statistical analyses were performed using SPSS 16.0 software, and differences were considered significant at p <... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: HPV; SDT; Molecular epidemiology; Cervical cancer. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200043 |
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| Fernandes,Thales Allyrio Araújo de Medeiros; Meissner,Rosely de Vasconcellos; Bezerra,Laelson Freire; Azevedo,Paulo Roberto Medeiros de; Fernandes,José Veríssimo. |
| We analyzed cervical specimens of 202 women, aged 15 to 64 years, attended at Luis Antonio Hospital, Natal, Brazil, to determine the prevalence of HPV and identify the more frequent genotypes and risk factors for HPV infection in women attended at a cervical cancer screening service. Two specimens were collected from each patient: one for cytological examination and the other to detect HPV DNA by PCR, and typing by dot blot hybridization. A total of 54.5% of the sample had normal cytology and 45.5% had cytological alterations. HPV was detected in 24.5% of the cytologically normal women and in 59.8% of those with altered cytology. Both single and double HPV infection increased the likelihood of cytological alterations. Thirteen types of HPV were identified,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human papillomavirus; Cervical cancer; Epidemiology; Prevalence; Risk factors. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300031 |
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| Godoy,A.E.G.; Mandelli,J.; Oliveira,F.H.; Calegari,S.; Moura,L.B.; Serafini,E.P.. |
| The purpose of the present study was to identify the expression of p16INK4 in cervical cancer precursor lesions by immunohistochemistry and to correlate it with lesion grade and presence of human papillomavirus (HPV) infection. Cervical specimens from 144 women seen consecutively at the gynecology outpatient clinic of our institution from December 2003 to May 2005 were analyzed by cytopathology, histopathology, polymerase chain reaction for HPV-DNA, and p16INK4 immunostaining. Histologically normal biopsies, HPV-DNA negative by polymerase chain reaction, were used as control. HPV-DNA prevalence, including the control group, was 68.1% and the prevalence of p16INK4 expression was 55.0%. The percentage of cells stained by p16INK4 ranged from 10 to 100%, both... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P16INK4; Cervical cancer; Human papillomavirus; Immunohistochemistry. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000700006 |
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| Golfetto,L.; Alves,E.V.; Martins,T.R.; Sincero,T.C.M.; Castro,J.B.S.; Dannebrock,C.; Oliveira,J.G.; Levi,J.E.; Onofre,A.S.C.; Bazzo,M.L.. |
| Persistent human papillomavirus (HPV) infection is an essential factor of cervical cancer. This study evaluated the analytical performance of restriction fragment length polymorphism polymerase chain reaction (PCR-RFLP) assay compared to PapilloCheck® microarray to identify human papilloma virus (HPV) in cervical cells. Three hundred and twenty-five women were analyzed. One sample was used for conventional cytology and another sample was collected using BD SurePath™ kit for HPV tests. Eighty samples (24.6%) were positive for HPV gene by PCR-Multiplex and were then submitted to PCR-RFLP and PapilloCheck® microarray. There was a genotyping agreement in 71.25% (57/80) on at least one HPV type between PCR-RFLP and PapilloCheck® microarray. In 22 samples... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cervical cancer; HPV; Screening; PCR-RFLP; PapilloCheck® microarray. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000500619 |
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| Ili,Carmen G; Brebi,Priscilla; Garcia,Patricia; Leal,Pamela; Lopez,Jaime; Tapia,Oscar; Letelier,Pablo; Weber,Helga; Castillo,Jonathan; Roa,Juan C. |
| Overexpression of Short and Raji variants of Cellular FLICE-like inhibitory protein (c-FLIP) is capable of inhibiting apoptosis, while the function of the Long isoform depends of c-FLIPL concentration in cells. The aim of this study was to determine the effects of c-FLIPL knockdown in cervical cell lines. SiHa, C-4I and C-33A cervical cancer cell lines were analyzed. c-FLIPL level expression was determined by quantitative real-time PCR and western blotting. c-FLIPL was transiently downregulated by siRNA. The effects of knockdown of c-FLIPL on cell viability, proliferation and apoptosis were assessed by comparing with scrambled siRNA-transfected cells. SiHa and C-4I c-FLIPL knockdown cells showed increased viability compared with scrambled siRNA-transfected... |
| Tipo: Journal article |
Palavras-chave: Apoptosis; Proliferation; Cervical cancer; SiRNA; C-FLIPL. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200036 |
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| Jiang,Tao; Chen,Zhao-Hui; Chen,Zhe; Tan,Dan. |
| The objective of this study was to explore the role of the SULF2-mediated ERK/AKT signaling pathway in cervical cancer. SULF2 expression was detected in tumor tissues and tumor-adjacent normal tissues from cervical cancer patients. HeLa cells were divided into six groups: control group, NC group, SULF2 siRNA group, SULF2 group, SULF2 + LY294002 group, and SULF2 + U0125 group. In each group, HeLa cells received the corresponding treatment, followed by measurement of the cellular biological characteristics and expression of the ERK/AKT signaling pathway. We also confirmed the effect of SULF2 in vivo using a xenograft model in nude mice. SULF2 was upregulated in cervical cancer tissues, which was specifically associated with the clinical stage, histological... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: SULF2; Cervical cancer; ERK/AKT; Proliferation; Apoptosis. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2020000200608 |
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| Maciag,P.C.; Villa,L.L.. |
| Squamous cell carcinoma of the cervix (SCCC) is one of the leading causes of death in developing countries. Infection with high-risk human papillomavirus (HPV) is the major risk factor to develop malignant lesions in the cervix. Polymorphisms of the MHC and p53 genes seem to influence the outcome of HPV infection and progression to SCCC, although controversial data have been reported. MHC are highly polymorphic genes that encode molecules involved in antigen presentation, playing a key role in immune regulation, while p53 is a tumor suppressor gene that regulates cell proliferation. The HPV E6 protein from high-risk types binds p53 and mediates its degradation by the ubiquitin pathway. The role of these polymorphisms in genetic susceptibility to HPV... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human papillomavirus; Cervical cancer; HLA; P53; Polymorphism. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000700017 |
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| Núñez,Jisette González; Pinheiro,Jordânia dos Santos; Silveira,Gabriel Fernandes; Beckenkamp,Aline; Buffon,Andréia; Bruno,Alessandra Nejar. |
| Abstract Considering the high prevalence of human cervical cancer and the adverse effects of the available treatments, it is important to develop studies involving plants. Eugenia uniflora L. is a Brazilian native plant widely used in folk medicine and some biological effects have already been described. In this study, we investigated the biologicals effects of the aqueous crude extract of E. uniflora leaves in relation to the viability of human cervical cancer cells (SiHa), non-tumorigenic cells HaCaT and human lymphocytes. Our results demonstrated that different concentrations of E. uniflora’s extract significantly inhibited the viability of the Siha cell line at 24, 48 and 72 hours of treatment, but did not induce significant changes in the HaCat cell... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eugenia uniflora L./effects/antitumoral; Pitangueira; SiHa; HaCat; Plant extract/antitumoral; Cervical cancer. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000200618 |
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| Registros recuperados: 34 | |
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