1
|
Nunes CC, Sita A, Mallmann L, Birlem GE, de Mattos LG, Da Silva DH, Furlanetto KO, Hansen AW, De Almeida PR, Fleck JD, Spilki FR, de Matos Almeida SE, Weber MN. HIV-1 genetic diversity and transmitted drug resistance to integrase strand transfer inhibitors among recently diagnosed adults in Porto Alegre, South Brazil. J Antimicrob Chemother 2022; 77:3510-3514. [PMID: 36272141 DOI: 10.1093/jac/dkac355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 09/29/2022] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES The HIV-1 genetic diversity and the presence of transmitted drug resistance mutations (TDRMs) against integrase strand transfer inhibitors (INSTIs) were assessed sequencing samples of antiretroviral (ARV)-naive HIV-1-infected individuals from South Brazil. METHODS Viral RNA from 42 ART-naive individuals was submitted to complete HIV-1 integrase gene amplification by RT-PCR and sequencing. RESULTS Viral strains carrying TDRMs against INSTIs were not detected in the present study. However, the polymorphisms L74M and L74I were each observed in 4.8% of the individuals. These accessory mutations have been reported as putative causes of TDRMs in ART with raltegravir, but only when associated with additional major mutations. When submitted to HIV-1 subtyping, 50% were classified as subtype C, 21% as recombinant BC, 19% as subtype B, 4.8% as subtype F1 and 4.8% as recombinant CF1. CONCLUSIONS All 42 ARV-naive individuals were apparently susceptible to INSTIs, included in the Brazilian therapeutic guideline since 2009. To the best of our knowledge, this is the first study to evaluate TDRMs against INSTIs in Brazil. The most prevalent HIV-1 subtypes were subtype C, followed by the recombinant BC and subtype B, which is in agreement with previous studies. However, the presence of subtype F1 and recombinant CF1 reported herein was not observed in previous studies.
Collapse
Affiliation(s)
- Cynara Carvalho Nunes
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil.,Serviço de Atendimento Especializado (SAE) Santa Marta, Secretaria Municipal de Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Alexandre Sita
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Larissa Mallmann
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Gabriela Espindola Birlem
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Larissa Gomes de Mattos
- Serviço de Atendimento Especializado (SAE) Santa Marta, Secretaria Municipal de Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Daila Haemk Da Silva
- Serviço de Atendimento Especializado (SAE) Santa Marta, Secretaria Municipal de Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Karen Oliveira Furlanetto
- Serviço de Atendimento Especializado (SAE) Santa Marta, Secretaria Municipal de Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Alana Witt Hansen
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Paula Rodrigues De Almeida
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Juliane Deise Fleck
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | - Fernando Rosado Spilki
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| | | | - Matheus Nunes Weber
- Instituto de Ciências da Saúde, Laboratório de Microbiologia Molecular, Universidade Feevale, Novo Hamburgo, RS, Brazil
| |
Collapse
|