Serum neutralizing antibodies against the human immunodeficiency virus were frequently detected in infected individuals, and low or absent serum neutralizing titers correlated with poor prognosis. Multiple diverse human immunodeficiency virus isolates were found to exhibit similar susceptibility to neutralization by a panel of human seropositive sera, suggesting that neutralizing antibodies are largely directed against conserved viral domains. Furthermore, utilizing antisera raised against a library of synthetic env peptides, four regions which are important in the neutralization process have been identified within both human immunodeficiency virus envelope glycoproteins (gp41 and gp120). Three of these are in conserved domains and should be considered for inclusion in a candidate vaccine.
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http://dx.doi.org/10.1128/JVI.61.6.2024-2028.1987 | DOI Listing |
Cien Saude Colet
January 2025
Faculdade de Medicina, Universidade de São Paulo. Av. Dr. Arnaldo 455, 2º andar, sala 2216, Cerqueira Cesar. 01246-903 São Paulo SP Brasil.
Prophylaxis based on antiretrovirals, such as pre-exposure prophylaxis to HIV (PrEP), has the potential to protect the populations most vulnerable to infection, which renews optimism for controlling the HIV epidemic. Against this backdrop, the aim of this article is to analyze the perceptions, negotiations and tensions surrounding the use of PrEP by men who have sex with men (MSM). This is a qualitative cross-section of a multicenter study, analyzing semi-structured interviews with 18 users of specialized HIV/AIDS healthcare facilities in the city of São Paulo/SP.
View Article and Find Full Text PDFPLoS One
January 2025
Faculty of Sciences and Technology (FAST), Laboratory of Biology and Molecular Typing in Microbiology (LBTMM), University of Abomey-Calavi, Atlantic, Benin.
Background: Antiretroviral treatment increases the risk of accumulation of resistance mutations that negatively impact the possibilities of future treatment. This study aimed to present the frequency of HIV-1 antiretroviral resistance mutations and the genetic diversity among children with virological failure in five pediatric care facilities in Benin.
Methods: A cross-sectional study was carried out from November 20, 2020, to November 30, 2022, in children under 15 years of age who failed ongoing antiretroviral treatment at five facilities care in Benin (VL > 3log10 on two consecutive realizations three months apart).
PLoS One
January 2025
Centre for Community-Based Research, Human Science Research Council, Pretoria, South Africa.
Purpose: Adolescent girls are at high risk for depression and human immunodeficiency virus (HIV) acquisition. Poor mental health can increase vulnerability to risky sexual behaviours. Therefore, this study aims to determine the prevalence of depressive symptomology and explore the convergence of HIV risk factors with depressive symptoms amongst cis-gender adolescent girls and young women (AGYW) in rural KwaZulu-Natal (KZN) and peri-urban Western Cape (WC) communities in South Africa.
View Article and Find Full Text PDFPLoS One
January 2025
CHIP, Rigshospitalet, University of Copenhagen, Denmark.
Many HIV clinics with poor IT-infrastructure are unable to report data on individuals in care with HIV, on antiretroviral treatment (ART) and virologically suppressed (VS), with the aim of monitoring the HIV Continuum of Care to estimate efficacy of HIV treatment programmes. We developed an estimation-tool, ESTIHIV, and determined the minimal data required for a random sample, to produce representative estimates, with a specified level of precision, of people with HIV on ART and VS. For proof of concept, 8852 HIV positive persons from seven clinics in seven different countries, with a follow-up visit during 2017, were included.
View Article and Find Full Text PDFPLoS One
January 2025
Department of Biomedical Sciences, Faculty of Health Sciences, University of Bamenda, Bambili, North West Region, Cameroon.
Background: Malaria and HIV are leading causes of death in Africa, including Cameroon. Antiretroviral therapy (ART) is expected to boost immunity and reduce vulnerability to opportunistic infections. Reports on comorbidities including malaria are common in Cameroon.
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