scholarly journals Molecular detection of oncogenic subtypes of human papillomavirus (HPV) in a group of women in the Amazon region of Brazil

2020 ◽  
Vol 42 ◽  
pp. e50005
Author(s):  
Alessandra Silva e Silva ◽  
Cláudia Giuliano Bica ◽  
Aniúsca Vieira ◽  
Cleiton Fantin

The natural history of cervical cancer is strongly related to the presence of human papillomavirus (HPV) infection, with its relationship with cervical cancer being a matter of concern. It is estimated that 70% of all cervical cancers worldwide are caused by HPV 16 and 18. Accordingly, the present study aimed to contribute to the identification of HPV subtypes circulating in a group of women of Manaus-Brazil.  Cervical samples were collected from 49 women, following the eligibility criteria of the study, and DNA was then extracted from the samples, which were analyzed for the presence of the virus in the genetic material through the polymerase chain reaction (PCR) using generic primers (GP05/06). Finally, identification of the viral subtypes was performed using specific primers for the detection of the main subtypes already examined (16 and 18). Positive HPV DNA was detected in 100% of the samples included in the study. Human papillomavirus 16 was the most prevalent subtype in the majority of lesions, accounting for 29 (59.2%) of the positive cases, and HPV 18 was detected in four (8.2%) women. In these 4 cases there was co-infection, with the presence of both HPV 18 and HPV 16. Therefore, 40.8% (20 cases) in which HPV DNA was detected presented infection with other subtypes of HPV not included in the study. This data has clinical implications related to cervical cancer prevention, as the current prophylactic HPV vaccines are only effective against high-risk HPV 16 and 18 subtypes.

2016 ◽  
Vol 19 (1) ◽  
pp. 160-166 ◽  
Author(s):  
Gustavo David García Muentes ◽  
Lindsay Karen García Rodríguez ◽  
Ramiro Israel Burgos Galarraga ◽  
Franklin Almeida Carpio ◽  
Juan Carlos Ruiz Cabezas

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.


Author(s):  
Daniel Duarte ◽  
Rodrigo Vieira ◽  
Elza Brito ◽  
Maria Pinheiro ◽  
Jeniffer Monteiro ◽  
...  

Purpose The aim of this study was to evaluate the overall and type-specific prevalence of human papillomavirus (HPV) infection among females living in riverside communities in the state of Pará, in the Eastern Brazilian Amazon. These communities are inhabited by low-income people, and are accessible only by small boats. Cervical cytology and risk factors for HPV infection were also assessed. Methods Cervical samples from 353 women of selected communities were collected both for Papanicolau (Pap) test and HPV detection. Conventional polymerase chain reaction (PCR) and real-time PCR were used to assess the overall and type-specific prevalence of HPV-16 and HPV-18, the main oncogenic types worldwide. Epidemiological questionnaires were used for the assessment of the risk factors for HPV infection. Results The mean age of the participants was 37 years (standard deviation [SD] ± 13.7). Most were married or with a fixed sexual partner (79%), and had a low educational level (80%) and family monthly income (< U$ 250; 53%). Overall, HPV prevalence was 16.4% (n = 58), with 8 cases of HPV-16 (2.3%) and 5 of HPV-18 (1.4%). Almost 70% of the women surveyed had never undergone the Pap test. Abnormal cytology results were found in 27.5% (n = 97) of the samples, with higher rates of HPV infection according to the severity of the lesions (p = 0.026). Conclusions The infections by HPV-16 and HPV-18 were not predominant in our study, despite the high prevalence of overall HPV infection. Nevertheless, the oncogenic potential of these types and the low coverage of the Pap test among women from riverside communities demonstrate a potential risk for the development of cervical lesions and their progression to cervical cancer, since the access to these communities is difficult and, in most cases, these women do not have access to primary care and public health services.


2019 ◽  
Vol 221 (9) ◽  
pp. 1488-1493 ◽  
Author(s):  
Catharina J Alberts ◽  
Isabelle Heard ◽  
Ana Canestri ◽  
Lucie Marchand ◽  
Jean-François Fléjou ◽  
...  

Abstract Background Prospective data on the natural history of anal human papillomavirus (HPV) infection are scarce in human immunodeficiency virus (HIV)-infected men who have sex with men (MSM). Methods We analyzed incidence and clearance of HPV-16 and HPV-18 in a French cohort of HIV-infected MSM, aged ≥35 years, followed-up annually (n = 438, 2014–2018). Results Human papillomavirus-16 and HPV-18 incidence were similar (~10% incident infections at 24 months). Human papillomavirus-16 incidence was higher among high-grade versus no lesion at baseline (adjusted incidence rate ratio = 3.0; 95% confidence interval, 1.07–8.18). Human papillomavirus-16 cleared significantly slower than HPV-18 (32% versus 54% by 24 months). Conclusions In conclusion, anal HPV-16 is more persistent than HPV-18, and its incidence correlates with a prior detection of high-grade lesions.


2010 ◽  
Vol 4 (11) ◽  
pp. 732-739 ◽  
Author(s):  
Zaitouna Alhamany ◽  
Mohammed El Mzibri ◽  
Aicha Kharbach ◽  
Abderrahman Malihy ◽  
Redouane Abouqal ◽  
...  

Introduction: Many studies have indicated a causal relationship between genital human papillomavirus (HPV) infections and cervical cancer. This study aimed to determine the prevalence and genotypes of six high-risk oncogenic human papillomaviruses in cervical lesions from Moroccan women with normal and abnormal cytology. Methodology: The study included 938 women from the Children's and Mothers' Pathology Department of Ibn Sina Hospital, Rabat. Cytopathology examination was done by routine PAP smear testing. HPV DNA testing was conducted using DNA amplification by Polymerase Chain Reaction with subsequent typing by hybridization with specific probes for HPV types 16, 18, 31, 33, 35 and 45. Results: Cytopathology testing showed that only 16.3 % had an abnormal cytology, with a predominance of atypical squamous cell of undetermined significance (ASCUS) cases. The overall HPV prevalence was 15.7%. According to the cytology results, HPV infection was detected in 15.8% of normal and 14.38% of abnormal cases. Specific HPV genotyping showed a predominance of HPV 16 and 18. Double infection (HPV 16 + 18) was found in two cases whereas multiple infections (HPV 16+18+31) were detected in only one case. Evaluation of the relationship between HPV status and some environmental risk factors, including individual, socio-economic, and hygiene status, showed a significant association between HPV infection and oral contraceptive use. Conclusion: Based on these data, a combination of cytology and HPV DNA testing allows for identification of patients with a high risk of developing high-grade cervical lesions and improves cervical cancer prevention.


2003 ◽  
Vol 14 (4) ◽  
pp. 258-265 ◽  
Author(s):  
B Nonnenmacher ◽  
J Pintos ◽  
M C Bozzetti ◽  
I Mielzinska-Lohnas ◽  
A T Lorincz ◽  
...  

A population at low risk for developing cervical cancer in Southern Brazil was studied to identify the main determinants of serological response to human papillomavirus (HPV). Enzyme-linked immunosorbent assay tests were performed in 976 women to detect serum IgG antibodies against HPV 16 L1 virus-like particles (VLPs) and HPVs 16, 18, 6 and 11 L1 VLPs as a mixture of antigens. Women with four or more sexual partners were more likely to be seropositive than women with one partner (HPV 16 serology odds ratio [OR]=3.06, 95% confidence interval [CI]: 2.0-4.8; HPV 6/11/16/18 serology OR=4.64, 95% CI: 3.0-7.2). HPV DNA and both serological responses were associated. Those positives to HPV 16 serology were twice as likely to have a cytological diagnosis of squamous intraepithelial lesions (SILs) than seronegatives (OR=2.07; 95% CI: 1.0-4.5, and OR=1.73; 95% CI: 0.8-3.8). Seropositivity to HPV 16 and HPV 6/11/16/18 antigens seem to be better markers of past sexual activity than current HPV infection, and humoral response to HPV 16 or HPV 6/11/16/18 may not be a strong indicator of cervical lesions in populations at low risk for cervical lesions.


2016 ◽  
Vol 2 (3_suppl) ◽  
pp. 18s-19s
Author(s):  
Mu Mu Shwe ◽  
Kyi Kyi Nyunt ◽  
Khin Saw Aye ◽  
Hlaing Myat Thu ◽  
Hla Myat Mo Mo ◽  
...  

Abstract 11 In Myanmar, cervical cancer ranks as the first most frequent cancer among women aged between 15 to 44 years and Human Papillomavirus (HPV) vaccination program is not established yet. Information on HPV genotypes distribution in cervical cancer is crucial to predict the future impact of HPV vaccines. This study aimed to determine the HPV-DNA and genotypes among women with cervical pre-cancer and cancer in Myanmar. A cross-sectional descriptive study was performed in 169 women with cervical neoplasia during 2012 to 2014. After obtaining informed consent, cervical cells were collected from 134 women with cervical intraepithelial neoplasia (CIN) and 35 with squamous cell carcinoma (SCC) of the cervix attending Sanpya General Hospital, Yangon, and Central Women Hospital, Mandalay. HPV-DNA testing and genotyping was performed by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP). HR-HPV was identified in CINI (39.3%), CINII (58.6%), CINIII (66.7%), and SCC (77.1%). Overall, the most common genotypes were HPV-16 (68.1%), followed by HPV-31 (16.5%), HPV-18 (7.7%), HPV-58 (6.6%), and HPV-35 (1.1%). Among SCC, HPV-16 was the most common genotype (66.7%) followed by HPV-18 (14.8%), HPV-31 (11.1%), HPV-35 (3.7%), and HPV-58 (3.7%). In CINI, the most common genotype were HPV-16 (69.7%) followed by HPV-31 (21.2%), HPV-18 (6.1%) and HPV-58 (3.0%). In CINII, HPV-16 was most commonly determined (52.9%) followed by HPV-31 (23.5%), HPV-58 (17.6%), and HPV-18 (5.9%). In CINIII, HPV-16 was also the most common genotype (85.7%) followed by HPV-31 (7.1%) and HPV-58 (7.1%). Vaccine preventable genotype, HPV-16 was the most common genotype in Myanmar. This study highlighted that the establishment of National HPV vaccination program is needed to reduce the incidence and mortality of cervical cancer in Myanmar.[Table: see text][Table: see text] AUTHORS' DISCLOSURES OF POTENTIAL CONFLICTS OF INTEREST: No COIs from the authors.


2019 ◽  
Vol 45 (2) ◽  
pp. 86-92
Author(s):  
Munira Jahan ◽  
Tania Islam ◽  
Sharmin Sultana ◽  
Monira Pervin ◽  
Prof. Ashrafunnessa ◽  
...  

Background: Cervical cancer is one of the most common types of cancer affecting women worldwide. Persistent HPV infection plays a major role in cervical cancer. The risk of cervical cancer has increased in parallel with the incidence of certain genotypes of human papilloma virus (HPV). Methods: The study was aimed to detect the distribution of HPV genotypes among cervical cancer patients from a specialized hospital in Dhaka, Bangladesh. HPV DNA testing was done by polymerase chain reaction (PCR) using SPF-10 broad-spectrum primers followed by genotyping by reverse hybridization using the INNO-LIPA genotyping system at the Department of Virology, Bangabandhu Sheikh Mujib Medical University, Dhaka. Results: HPV 16 was more prevalent (72.0%) in cervical cancer patients from Bangladesh followed by type 18 (6.0%) and 45 (2.0%). Genotype 16 and 18 alone and as co-infection were detected in 88.0% cases. Multiple HPV infection was found in 20% patients. Along with high risk (HR) HPV 16, 18 and 45 HR HPV 56, 39, 31 and 58 were also prevalent in multiple infections. Conclusion: Thus the study concluded that HR HPV 16 and HPV 18 were more prevalent genotypes among cervical cancer patients in a specialised hospital in Bangladesh. Along with HR HPV 16 and HPV 18, HR HPV 45, 56, 39, 31 and 58 were also prevalent Bangladesh Med Res Counc Bull 2019; 45: 86-92


Author(s):  
N.A. Shmakova ◽  
G.N. Chistyakova ◽  
I.N. Kononova ◽  
I.I. Remizova

Recently, there has been a steady growth of cervical cancer all over the world, especially in Russia. Patients with cervical cancer have become much younger. At the same time, the human papillomavirus is not only the main factor in the neoplastic process, but it is also one of the most common sexually transmitted infections in the world. The aim of the paper is to assess the prevalence and characteristics of human papillomavirus genotypes in patients with cervical intraepithelial neoplasia. Materials and Methods. During the periodic screening we examined 213 women of a reproductive age with HPV infection. All patients underwent liquid-based cytology and human papillomavirus genotyping by polymerase chain reaction. Results. We revealed that the prevalence of cervical intraepithelial neoplasia among women with papillomavirus infection was 80.3 % (n=171). According to human papillomavirus genotyping, HPV 16 (38 %) and HPV 33 (32 %) prevailed. We also observed positive high correlation between high-grade squamous intraepithelial lesions (HSIL) and HPV 18 (r=+0.759, p=0.001), a negative mean correlation between HPV 45 and low-grade squamous intraepithelial lesions (LSIL) (r=-0.643, p=0.002). A cohort of patients with severe intraepithelial cervical lesions demonstrated high viral load rates. Conclusion. According to the results obtained, we established the dominance of HPV 16 and HPV 33 genotypes in cervical intraepithelial neoplasia. There were significant differences between HSIL and LSIL patients with HPV 18 and HPV 45. There was also a correlation between an increase in the viral load with the severity of the pathological process. Keywords: human papillomavirus, intraepithelial cervical neoplasms, cervical cancer. В последние годы в мире, особенно в России, наблюдается неуклонный рост и «омолаживание» рака шейки матки. При этом вирус папилломы человека является не только основным фактором прогрессирования неопластического процесса, но и одной из наиболее распространенных инфекций, предаваемых половым путем, в мире. Цель. Оценить распространенность и характеристику генотипов папилломавирусной инфекции у пациенток с цервикальными интраэпителиальными неоплазиями. Материалы и методы. Проведено обследование 213 пациенток репродуктивного возраста с ВПЧ-инфекцией, пришедших на профилактический осмотр. Всем женщинам было выполнено цитологическое исследование жидкостным методом и генотипирование вируса папилломы человека методом полимеразной цепной реакции. Результаты. Распространенность цервикальных интраэпителиальных неоплазий среди женщин с папилломавирусной инфекцией составила 80,3 % (171 пациентка). Согласно данным генотипирования вируса папилломы человека превалировал 16-й (38 %) и 33-й типы (32 %). Выявлена положительная высокая корреляционная связь между цервикальными неоплазиями высокой степени онкогенного риска (HSIL) и 18-м типом ВПЧ-инфекции (r=+0,759 при р=0,001), отрицательная средняя корреляционная связь 45-го типа ВПЧ с низкой степенью онкогенного риска (LSIL) (r=-0,643 при р=0,002). Продемонстрированы высокие показатели вирусной нагрузки в когорте пациенток с тяжелыми внутриэпителиальными цервикальными поражениями. Выводы. По результатам полученных данных установлено доминирование 16-го и 33-го генотипов ВПЧ при цервикальных интраэпителиальных неоплазиях с наличием значимых различий между пациентами с HSIL и LSIL в отношении 18-го и 45-го типов, а также связь роста уровня вирусной нагрузки с увеличением степени тяжести патологического процесса. Ключевые слова: вирус папилломы человека, интраэпителиальные новообразования шейки матки, рак шейки матки.


2020 ◽  
Vol 26 (18) ◽  
pp. 2073-2086
Author(s):  
Saule Balmagambetova ◽  
Andrea Tinelli ◽  
Ospan A. Mynbaev ◽  
Arip Koyshybaev ◽  
Olzhas Urazayev ◽  
...  

High-risk human papillomavirus strains are widely known to be the causative agents responsible for cervical cancer development. Aggregated damage caused by papillomaviruses solely is estimated in at least 5% of all malignancies of the human body and 16% in cancers that affect the female genital area. Enhanced understanding of the complex issue on how the high extent of carcinogenicity is eventually formed due to the infection by the Papoviridae family would contribute to enhancing current prevention strategies not only towards cervical cancer, but also other HPV associated cancers. This review article is aimed at presenting the key points in two directions: the current cervical cancer prevention and related aspects of HPV behavior. Virtually all applied technologies related to HPV diagnostics and screening programs, such as HPV tests, colposcopy-based tests (VIA/VILI), conventional and liquid-based cytology, currently available are presented. Issues of availability, advantages, and drawbacks of the screening programs, as well as vaccination strategies, are also reviewed in the article based on the analyzed sources. The current point of view regarding HPV is discussed with emphasis on the most problematic aspect of the HPV family concerning the observed increasing number of highly carcinogenic types. Present trends in HPV infection diagnostics throughout the human fluids and tissues are also reported, including the latest novelties in this field, such as HPV assay/self-sample device combinations. Besides, a brief outline of the related prevention issues in Kazakhstan, the leading country of Central Asia, is presented. Kazakhstan, as one of the post-soviet middle-income countries, may serve as an example of the current situation in those terrains, concerning the implementation of globally accepted cervical cancer prevention strategies. Along with positive achievements, such as the development of a nationwide screening program, a range of drawbacks is also analyzed and discussed.


2020 ◽  
Vol 25 (3) ◽  
pp. 325-331
Author(s):  
Erkan Özmen ◽  
Ülkü Altoparlak ◽  
Muhammet Hamidullah Uyanık ◽  
Abdulkadir Gülen

Introduction: Human papillomavirus (HPV) is frequently a sexually transmitted virus and can cause cervical cancer in women. Cervical cancer is the second most common type of cancer among the developing countries. In this study, cervical HPV DNA positivity and genotype distributions were investigated in female patients living in our region and the results were compared with different studies. Materials and Methods: Between 1 July, 2017 and 1 March, 2019, 433 cervical swabs were sent to Ataturk University, Medical Faculty Hospital, Medical Microbiology Laboratory due to suspicion of HPV. Swab samples were evaluated for HPV virus using molecular (Polymerase Chain Reaction-PCR) methods. For this purpose, Xpert HPV Test (Cepheid, Inc, Sunnyvale, CA) was used to identify HPV types 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66 and 68 t in a single sample. Results: Mean age of the patients ranged from 20 to 69 years, with a mean of 39.8 years (± 10.0). Positivity was detected in 62 of the 433 patients. Mean age of the positive patients was 40.2 years (± 11.3). When the positive patients were examined in terms of HPV types, the presence of HPV 16 was observed with a rate of 25.6%, while the HPV 18/45 types were found to be 9.0% in total. When patients were evaluated according to age groups, HPV DNA positivity was highest in the 25-34 age group with 38.7%. In our statistical study, there was no significant difference in HPV DNA positivity rate between the ages of 35 and under 35 years. Conclusion: This study demonstrates the prevalence and viral genotype distribution of HPV infection in women in Erzurum region. HPV type 16 is seen with a high rate in our region.


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