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1.
Rev. bras. epidemiol ; 19(1): 160-166, Jan.-Mar. 2016. tab, graf
Article in English | LILACS | ID: lil-781582

ABSTRACT

ABSTRACT: Introduction: Human papillomavirus (HPV) is considered a necessary causative agent for developing oropharyngeal, anal and cervical cancer. Among women in Ecuadorian population, cervical cancer ranks as the second most common gynecological cancer. Not many studies about HPV burden have been published in Ecuador, and genotypes distribution has not been established yet. The little data available suggest the presence of other genotypes different than 16 and 18. Objectives: In the present study, we attempt to estimate the prevalence of HPV 16, HPV 18 and other 35 genotypes among Ecuadorian women undergoing cervical cancer screening. The overall prevalence of HPV infection was also estimated. Methods: Routine cervical samples were analyzed using Linear Array(r) HPV Genotyping test (Roche). Results: A total of 1,581 cervical samples obtained from Ecuadorian women undergoing cervical cancer screening were included in this study. HPV DNA was detected in 689 cervical samples (43.58%). Of these samples, 604 (38.20%) were positive for a single HPV genotype, while another 85 (5.37%) samples were positive for multiple HPV types. Genotype 16 (5.50%) resulted in the most frequently detected type in both single and multiple infections. HPV 33 (4.55%) and HPV 11 (3.80%) occupied the second and the third place in frequency among all detected genotypes. Conclusions: Viral genotypes different from HPV 16 and HPV 18 are frequently detected among Ecuadorian women. The overall prevalence of HPV resulted higher than the one reported in other South American countries with a greater burden in the second and third decades of life.


RESUMO: Introdução: O papilomavírus humano (HPV) é considerado agente causador necessário para o desenvolvimento de câncer da orofaringe, do colo do útero e anal. Na população feminina do Equador, o câncer de colo do útero é o segundo câncer ginecológico mais comum. No Equador, o número de estudos publicados sobre o HPV é pequeno, e a distribuição de genótipos ainda não foi estabelecida. Os dados limitados sugerem a presença de outros genótipos diferentes dos tipos 16 e 18. Objetivos: No presente estudo, foi estimada a prevalência de HPV 16, HPV 18 e outros 35 genótipos entre as mulheres equatorianas submetidas ao exame de rastreamento para câncer do colo do útero. Métodos: Amostras cervicais de rotina foram analisadas pelo (método) Linear Array(r) VPH (Roche). Resultados: Foram incluídas neste estudo 1.581 amostras cervicais de mulheres equatorianas. O HPV foi detectado em 689 (43,58%) amostras cervicais. Destas, 604 (38,20%) foram positivas para somente um genótipo de HPV, enquanto 85 (5.37%) amostras foram positivas para vários tipos. O genótipo 16 (5,50%) foi a variante mais frequentemente detectada nos casos com infecção única ou múltipla. HPV 33 (4,55%) e HPV 11 (3,80%) ficaram, respectivamente, em segundo e terceiro lugar em frequência entre todos os genótipos detectados. Conclusões: Outros genótipos virais de alto risco diferentes do que HPV 16 e HPV 18 são frequentemente detectados entre as mulheres equatorianas. A prevalência global de infecção cervical pelo HPV foi maior do que a observada em outros países da América do Sul.


Subject(s)
Humans , Female , Adult , Middle Aged , Aged , Young Adult , Cervix Uteri/virology , Genotype , Papillomaviridae/genetics , Papillomaviridae/isolation & purification , Papillomavirus Infections/virology , Cross-Sectional Studies , Early Detection of Cancer , Ecuador/epidemiology , Papillomavirus Infections/epidemiology , Prevalence , Uterine Cervical Neoplasms/diagnosis , Uterine Cervical Neoplasms/virology
2.
Medicina (Guayaquil) ; 11(2): 114-117, jun. 2006.
Article in Spanish | LILACS | ID: lil-652663

ABSTRACT

Pocos son los datos que existen en la población ecuatoriana referentes a la infección por virus del papiloma humano (VPH), entidad íntimamente relacionada con el cáncer de cérvix, patología que según estadísticas del ION-SOLCA, representa el 51% de las neoplasias malignas detectadas en mujeres. Realizamos un estudio transversal junto con el personal del servicio de colposcopía del ION SOLCA. Tomamos muestras citológicas cervicales a 15 pacientes altamente sospechosas de estar infectadas con VPH. Se extrajo el ADN de dichas muestras y se identificó y genotipificó el virus por medio de PCR en tiempo real y PCR-dot blot reverso (INNO-LiPA HPV Genotyping v2) respectivamente. Todas las pacientes fueron positivas para VPH. Los genotipos encontrados fueron: 6, 11, 31, 40, 51, 52, 53, 59 y 68. El 80% de los pacientes mostró infección con más de un genotipo del VPH. No se encontró ningún paciente con genotipo 16 y/o 18.


There are not much information in the Ecuadorian population about human papillomavirus infection (HPV), is associated with cervix cancer, pathology that represent 51% of malignant neoplasm detected in women according to the NOI-SOLCA statistics. It took cervical cytology samples to 15 patients with high risk of be infected by HPV. It got DNA of these samples and it realized a identification a genotype classification of virus by a PCR in real time and reverse PCR-dot blot (INNO-LiPA HPV Genotyping v2). All the patients were positive for HPV. The genotypes founded were: 6, 11,31,40,51,52,53,59 and 68. The 80% of all patients showed infection with more one genotype of HPV. It was not found any patient with genotype 16 and/or 18.


Subject(s)
Adult , Female , Young Adult , Middle Aged , Diagnosis , Nucleic Acid Hybridization , Papillomavirus Infections , Polymerase Chain Reaction
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