The use of MHC multimers allows precise and direct detecting and analyzing of antigen-specific T-cell populations and provides new opportunities to characterize T-cell responses in humans and animals. MHC-multimers enable us to enumerate specific T-cells targeting to viral, tumor and vaccine antigens with exceptional sensitivity and specificity. In the field of HIV/SIV immunology, this technique provides valuable information about the frequencies of HIV- and SIV-specific CD8(+) cytotoxic T lymphocytes (CTLs) in different tissues and sites of infection, AIDS progression, and pathogenesis. Peptide-MHC multimer technology remains a very sensitive tool in detecting virus-specific T -cells for evaluation of the immunogenicity of vaccines against HIV-1 in preclinical trials. Moreover, it helps to understand how immune responses are formed following vaccination in the dynamics from priming point until T-cell memory is matured. Here we review a diversity of peptide-MHC class I multimer applications for fundamental immunological studies in different aspects of HIV/SIV infection and vaccine development.
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http://dx.doi.org/10.1586/14760584.2015.962520 | DOI Listing |
PLoS One
January 2025
Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America.
End-user feedback early in product development is important for optimizing multipurpose prevention technologies for HIV and pregnancy prevention. We evaluated the acceptability of the 90-day dapivirine levonorgestrel ring (DPV-LNG ring) used for 14 days compared to a dapivirine-only ring (DVR-200mg) in MTN-030/IPM 041 (n = 23), and when used for 90 days cyclically or continuously in MTN-044/IPM 053/CCN019 (n = 25). We enrolled healthy, non-pregnant, HIV-negative women aged 18-45 in Pittsburgh, PA and Birmingham, AL (MTN-030 only).
View Article and Find Full Text PDFJ Acquir Immune Defic Syndr
December 2024
The Johns Hopkins University, Baltimore, MD.
Background: On demand, topical PrEP is desired by those preferring episodic, nonsystemic PrEP. PC-1005 gel (MIV-150, zinc, and carrageenan) exhibits in vitro antiviral HIV-1, human papillomavirus (HPV), and herpes simplex virus type 2 (HSV-2) activity, attractive for a multipurpose prevention technology candidate. We evaluated the safety, pharmacokinetics, and antiviral effect of rectally applied PC-1005.
View Article and Find Full Text PDFAIDS Res Hum Retroviruses
January 2025
Department of Infectious Disease, The Affiliated Hospital of Southwest Medical University, Luzhou, China.
In 2023, we published a case study involving a 10-year-old HIV-1-infected child with low-level viremia (LLV). We showed that this child patient achieved successful viral suppression by modifying the antiretroviral therapy (ART) regimen according to the HIV-1 DNA genotypic drug resistance testing. In this study, we aimed to address whether HIV-1 DNA genotypic drug resistance testing could direct successfully virological suppression in HIV-1-infected patients experiencing persistent LLV based on evidence from a cohort study.
View Article and Find Full Text PDFEmergencias
December 2024
Servicio de Urgencias, Hospital Clínic, IDIBAPS, Universitat de Barcelona, Barcelona, España.
Hidden infections and late diagnoses are currently the main challenges of the HIV pandemic. Emergency departments (EDs) are one of the health care system's key resources addressing these challenges. In 2020, the Spanish Society of Emergency Medicine (SEMES) published recommendations for ordering HIV serology testing for patients with certain health conditions, and in 2021 SEMES launched the "Leave Your Mark" (Deja tu Huella - DTH) program to facilitate implementing the recommendations during emergency care.
View Article and Find Full Text PDFBackground: Accurate estimates of incremental cost (IC) attributable to antimicrobial resistance (AMR) provide information of immense public health importance to the policy makers. Here, we present the IC from patient perspective for treating antimicrobial-resistant pathogens in India.
Methods: This cohort study was conducted in eight hospitals including government (GH), private (PH) and trust hospitals (TH), considering their ownership, geographical location and categories of cities.
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