全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

High Prevalence and Genotypic Diversity of the Human Papillomavirus in Amazonian Women, Brazil

DOI: 10.1155/2013/514859

Full-Text   Cite this paper   Add to My Lib

Abstract:

The aim of this study was to determine the prevalence of human papillomavirus (HPV) in a women population living within the state of Amazonas, Brazil, and to determine the viral genotypes found. The study included 361 sexually active women over 18 years of age. We performed the Pap test and the molecular diagnosis for HPV DNA using polymerase chain reaction (PCR). The amplicons obtained were sequenced in automatic sequencer for genotyping. The presence of HPV DNA was found in 29.1% (105) of the women. Only 321 women presented satisfactory slides for cytological diagnosis, 97.9% (314) had normal cytology (negative for cancer), and 2.1% (7) had abnormal cytology (4 ASCUS, 1 LSIL, and 2 HSIL). The types more frequently found were HPV 16 (58.1%) and HPV 58 (20.0%). Additionally, we found more 13 types of HPV. Compared with previous studies in Brazil, our data confirmed a high prevalence and genotypic diversity of HPV in Brazilian women. 1. Introduction Cervical cancer, whose most strongly associated etiologic agent is the HPV, a sexually transmitted pathogen, is a leading cause of death among women [1]. In 2013, the National Cancer Institute estimates that there will be approximately 17,540 new cases of this disease in Brazil, occupying the third position among the most common cancers affecting among women, second only skin cancer (not melanoma) and breast cancer. For the state of Amazonas, the numbers are even more concerning because it is estimated that this disease will occupy the first position among the most common cancers in women [2]. There are over 100 genotypes of HPV, identified by numbers indicating the sequence of historical description. They are divided into groups according to oncogenic risk: low risk (e.g., HPV6 and HPV11, related to the development of benign lesions) and high risk (mainly represented by HPV16 and HPV18, involved in malign transformation of epithelium) [3, 4]. Reports of the prevalence of HPV demonstrate that the infection of HPV 16 is the most prevalent in the world. However, the frequency of the other types of HPV exhibits a wide geographical variability [5, 6]. The Amazon region is known as an area with a high level of sexually transmitted infections (STI) and high incidence of cervical cancer. It is a region that has a large territory, where there are many isolated communities in rural and indigenous areas where access is possible only by river, and even small urban areas have a very precarious health system, making hard the access to primary and secondary preventions. The aim of this study was to determine the prevalence

References

[1]  W. I. Al-Daraji and J. H. F. Smith, “Infection and cervical neoplasia: facts and fiction,” International Journal of Clinical and Experimental Pathology, vol. 2, no. 1, pp. 48–64, 2009.
[2]  BRASIL, National Institute of Cancer José Alencar Gomes da Silva. Estimativa 2012: Incidência de Cancer no Brasil, Instituto Nacional do Cancer, Rio de Janeiro, Brazil, 2011.
[3]  E.-M. de Villiers, C. Fauquet, T. R. Broker, H.-U. Bernard, and H. zur Hausen, “Classification of papillomaviruses,” Virology, vol. 324, no. 1, pp. 17–27, 2004.
[4]  X. Yuan, Y. Yang, D. Gu, H. Liu, H. Yang, and M. Wang, “Prevalence of human papillomavirus infection among women with and without normal cervical histology in Shandong Province, China,” Archives of Gynecology and Obstetrics, vol. 283, no. 6, pp. 1385–1389, 2011.
[5]  G. N. L. Camara, D. M. Cerqueira, A. P. G. Oliveira, E. O. Silva, L. G. S. Carvalho, and C. R. F. Martins, “Prevalence of human papillomavirus types in women with pre-neoplastic and neoplastic cervical lesions in the federal district of Brazil,” Memorias do Instituto Oswaldo Cruz, vol. 98, no. 7, pp. 879–883, 2003.
[6]  I. E. Calleja-Macias, L. L. Villa, J. C. Prado et al., “Worldwide genomic diversity of the high-risk human papillomavirus types 31, 35, 52, and 58, four close relatives of human papillomavirus type 16,” Journal of Virology, vol. 79, no. 21, pp. 13630–13640, 2005.
[7]  I. M. Magalh?es, N. Moysés, L. A. Afonso, L. H. S. Oliveira, and S. M. B. Cavalcanti, “Comparison of two pairs of primers used in polymerase chain reaction for the detection of human papillomaviruses in cervical smears,” Jornal Brasileiro de Doen?as Sexualmente Transmissiveis, vol. 20, no. 2, pp. 93–98, 2008.
[8]  J. Sambrook, E. F. Fritsch, and T. Maniatis, Molecular Cloning: A Laboratory Manual, Cold Spring Harbor Laboratory, Spring Harbor, NY, USA, 2nd edition, 1989.
[9]  M. N. Manos, Y. Ting, D. K. Wright, A. J. Lewis, T. R. Broker, and S. M. Wolinsky, “Use of polymerase chain reaction for the detection of genital human papillomaviruses,” in Molecular Diagnostics of Human Cancer, M. Furth and M. Greaves, Eds., vol. 7 of Cancer Cell, pp. 209–214, Cold Spring Harbor Laboratory, 1989.
[10]  A.-M. de Roda Husman, J. M. M. Walboomers, A. J. C. van den Brule, C. J. L. M. Meijer, and P. J. F. Snijders, “The use of general primers GP5 and GP6 elongated at their 3' ends with adjacent highly conserved sequences improves human papillomavirus detection by PCR,” Journal of General Virology, vol. 76, no. 4, pp. 1057–1062, 1995.
[11]  E. M. Fredizzi, C. G. Schlup, M. E. Menezes, and M. Ocampos, “Human Papillomavirus (HPV) infection in women of Florianópolis, Santa Catarina, Brazil,” Jornal Brasileiro de Doen?as Sexualmente Transmissiveis, vol. 20, no. 2, pp. 73–79, 2008.
[12]  N. Moysés, D. S. Balthazar, L. A. Afonso, L. H. S. Oliveira, and S. M. B. Cavalcanti, “Evaluation of the combined use of papanicolaou screen test and the polymerase chain reaction for the identification of patients at risk of cervical cancer,” Jornal Brasileiro de Doen?as Sexualmente Transmissiveis, vol. 20, no. 2, pp. 99–103, 2008.
[13]  S. A. Lippman, M. C. A. Sucupira, H. E. Jones et al., “Prevalence, distribution and correlates of endocervical human papillomavirus types in Brazilian women,” International Journal of STD and AIDS, vol. 21, no. 2, pp. 105–109, 2010.
[14]  R. R. Finan, H. Tamim, and W. Y. Almawi, “Identification of Chlamydia trachomatis DNA in human papillomavirus (HPV) positive women with normal and abnormal cytology,” Archives of Gynecology and Obstetrics, vol. 266, no. 3, pp. 168–171, 2002.
[15]  N. Tábora, A. Zelaya, J. Bakkers, W. J. G. Melchers, and A. Ferrera, “Chlamydia trachomatis and genital human papillomavirus infections in female university students in Honduras,” American Journal of Tropical Medicine and Hygiene, vol. 73, no. 1, pp. 50–53, 2005.
[16]  M. M. Castro, I. P. Farias, C. M. Borborema-Santos, G. Correia, and S. Astolfi-Filho, “Prevalence of human papillomavirus (HPV) type 16 variants and rare HPV types in the central Amazon region,” Genetics and Molecular Research, vol. 10, no. 1, pp. 186–196, 2011.
[17]  A. T. de Mattos, L. B. de Freitas, B. M. C. Lima, A. E. Miranda, and L. C. Spano, “Diversity and uncommon HPV types in HIV seropositive and seronegative women attending an STI clinic,” Brazilian Journal of Microbiology, vol. 42, no. 2, pp. 786–793, 2011.
[18]  M. Oliveira-Silva, C. X. Lordello, L. M. Zardo, C. R. Bonvicino, and M. A. Moreira, “Human papillomavirus in Brazilian women with and without cervical lesions,” Virology Journal, vol. 8, article 4, pp. 1–6, 2011.
[19]  J. C. Canche, I. R. López, N. G. Suárez et al., “High prevalence and low E6 genetic variability of human papillomavirus 58 in women with cervical cancer and precursor lesions in Southeast Mexico,” Memorias do Instituto Oswaldo Cruz, vol. 105, no. 2, pp. 144–148, 2010.
[20]  K. Takehara, T. Toda, T. Nishimura, et al., “Human papillomavirus types 52 e 58 are prevalent at uterine cervical squamous lesions from Japanese women,” Pathology Research International, vol. 2011, Article ID 246936, 7 pages, 2011.
[21]  N. Mu?oz, X. Castellsagué, A. B. González, and L. Gissmann, “Chapter 1: HPV in the etiology of human cancer,” Vaccine, vol. 24, no. S3, pp. S1–S10, 2006.
[22]  F. G. Melga?o, M. L. G. Rosa, E. F. Augusto, et al., “Human papillomavirus genotypes distribution in cervical samples from women living with human immunodeficiency virus,” Archives of Gynecology and Obstetrics, vol. 283, no. 4, pp. 809–817, 2011.
[23]  E. M. Burd, “Human papillomavirus and cervical cancer,” Clinical Microbiology Reviews, vol. 16, no. 1, pp. 1–17, 2003.
[24]  J. Musa, B. Taiwo, S. Goldsmith, S. Sutton, B. Berzins, and R. L. Murphy, “Predictors of atypical squamous cell of undetermined significance cervical cytology with high-risk human papilloma virus genotypes,” Archives of Gynecology and Obstetrics, vol. 283, no. 2, pp. 343–348, 2011.
[25]  B. Dondog, G. M. Clifford, S. Vaccarella et al., “Human papillomavirus infection in Ulaanbaatar, Mongolia: a population-based study,” Cancer Epidemiology Biomarkers and Prevention, vol. 17, no. 7, pp. 1731–1738, 2008.
[26]  N. Keita, G. M. Clifford, M. Koulibaly et al., “HPV infection in women with and without cervical cancer in Conakry, Guinea,” British Journal of Cancer, vol. 101, no. 1, pp. 202–208, 2009.
[27]  H. Trottier and E. L. Franco, “The epidemiology of genital human papillomavirus infection,” Vaccine, vol. 24, supplement 1, pp. S4–S15, 2006.
[28]  S. Sanjosé, M. Diaz, X. Castellsangué, et al., “Worldwide prevalence and genotype distribution of cervical human papillomavirus DNA in women with normal cytology: ametanalysis,” The Lancet Infectious Diseases, no. 7, pp. 453–459, 2007.

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413