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Published in: BMC Infectious Diseases 1/2021

01-12-2021 | Human Papillomavirus | Research article

Viral load and high prevalence of HR-HPV52 and 58 types in black women from rural communities

Authors: Lays Paula Bondi Volpini, Jerusa Araújo Dias, Luciana Bueno de Freitas, Maria Carmen Lopes Ferreira Silva, Angélica Espinosa Miranda, Liliana Cruz Spano

Published in: BMC Infectious Diseases | Issue 1/2021

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Abstract

Background

The high-risk human papillomavirus (HR-HPV) infection is the main cause of cervical cancer development, and the most common types were included in the last approved nonavalent vaccine (9vHPV). Geographical, socioeconomic and ethnic barriers in developing countries challenge primary and secondary prevention measures of cervical cancer. We aimed to determine the prevalence of HPV infection and the viral load of HR-HPV 9vHPV-related types black women resident in rural semi-isolated communities.

Methods

A descriptive study was conducted with 273 cervical samples of women from rural communities of Southeastern Brazil. Viral DNA was amplified by PCR, the genotype was identified by Reverse Line Blot (RLB) and Restriction Fragment Length Polymorphism (RFLP), and real-time PCR was applied to determine the viral load.

Results

HPV frequency was 11.4% (31/273), associated with the presence of cytological abnormalities (32.3%; p < 0.001). Thirty-one distinct genotypes were detected; HR-HPV occurred in 64.5% (20/31) of the samples and the most prevalent type were HPV52 > 58, 59. Multiple infections occurred with up to nine different genotypes. The viral load of HR-HPV 9vHPV-related types was higher in lesions than in normal cytology cases (p = 0.04); “high” and “very high” viral load occurred in HSIL and LSIL, respectively (p = 0.04).

Conclusions

We highlight that despite the low HPV frequency in the black rural women population, the frequency of HR-HPV was high, particularly by the HR-HPV52 and 58 types. Moreover, the HR-HPV viral load increased according to the progression from normal to lesion, being a potential biomarker to identify those women at higher risk of developing cervical lesions in this population.
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Metadata
Title
Viral load and high prevalence of HR-HPV52 and 58 types in black women from rural communities
Authors
Lays Paula Bondi Volpini
Jerusa Araújo Dias
Luciana Bueno de Freitas
Maria Carmen Lopes Ferreira Silva
Angélica Espinosa Miranda
Liliana Cruz Spano
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Infectious Diseases / Issue 1/2021
Electronic ISSN: 1471-2334
DOI
https://doi.org/10.1186/s12879-021-06042-6

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