HIV-1 Molecular Epidemiology, Transmission Clusters and Transmitted Drug Resistance Mutations in Central Brazil

Frontiers in Microbiology
Tayana Serpa Ortiz TanakaAna Rita Coimbra Motta-Castro

Abstract

We aimed to characterize HIV-1 molecular epidemiology and transmission clusters among heterosexual (HET) and men who have sex with men (MSM) individuals, as well as transmitted drug resistance mutations (TDRM) in Central-Western Brazil. This cross-sectional survey was conducted among 190 antiretroviral naïve HIV-1 infected individuals. Proviral DNA was extracted, and nested PCR amplified partial polymerase gene (PR/RT). After sequencing, subtypes were assigned, and the sequences were analyzed for the occurrence of possible transmission networks. Calibrated Population Resistance (CPR) tool from Stanford HIV Database was used to investigate the presence of TDRM. Among 150 individuals whose samples were successfully sequenced, the most prevalent HIV-1 subtype was B, followed by recombinant forms. The occurrence of twenty transmission clusters composed by at least two sequences was verified, suggesting the existence of transmission clusters among individuals from the same or distinct sexual orientations. Intermediate level of TDRM (12%) was found in the study population, and almost half of the subjects with TDRM had more than one resistance mutation. No correlations between sexual orientation and the presence of TDRM, HIV-1 subtype...Continue Reading

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Citations

Jun 3, 2021·International Journal of Molecular Sciences·Ana Santos-PereiraNuno S Osório

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Datasets Mentioned

BETA
MF545192
MF545340

Methods Mentioned

BETA
electrophoresis
PCR
ELISA
genotyping

Software Mentioned

Cluster Matcher
SimPlot
MEGA
PhyML
Clustal W
Basic Local Alignment Search Tool ( BLASTn )
SPSS
Cluster picker
DNASTAR
bootscan

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