Dataset Information

Human Immunodeficiency Virus Immune Cell Receptors, Coreceptors, and Cofactors: Implications for Prevention and Treatment.

ABSTRACT: In the last three decades, extensive research on human immunodeficiency virus (HIV) has highlighted its capability to exploit a variety of strategies to enter and infect immune cells. Although CD4(+) T cells are well known as the major HIV target, with infection occurring through the canonical combination of the cluster of differentiation 4 (CD4) receptor and either the C-C chemokine receptor type 5 (CCR5) or C-X-C chemokine receptor type 4 (CXCR4) coreceptors, HIV has also been found to enter other important immune cell types such as macrophages, dendritic cells, Langerhans cells, B cells, and granulocytes. Interestingly, the expression of distinct cellular cofactors partially regulates the rate in which HIV infects each distinct cell type. Furthermore, HIV can benefit from the acquisition of new proteins incorporated into its envelope during budding events. While several publications have investigated details of how HIV manipulates particular cell types or subtypes, an up-to-date comprehensive review on HIV tropism for different immune cells is lacking. Therefore, this review is meant to focus on the different receptors, coreceptors, and cofactors that HIV exploits to enter particular immune cells. Additionally, prophylactic approaches that have targeted particular molecules associated with HIV entry and infection of different immune cells will be discussed. Unveiling the underlying cellular receptors and cofactors that lead to HIV preference for specific immune cell populations is crucial in identifying novel preventative/therapeutic targets for comprehensive strategies to eliminate viral infection.

SUBMITTER: Woodham AW

PROVIDER: S-EPMC4948215 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

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Human Immunodeficiency Virus Immune Cell Receptors, Coreceptors, and Cofactors: Implications for Prevention and Treatment.

Woodham Andrew W AW Skeate Joseph G JG Sanna Adriana M AM Taylor Julia R JR Da Silva Diane M DM Cannon Paula M PM Kast W Martin WM

AIDS patient care and STDs 20160701 7

In the last three decades, extensive research on human immunodeficiency virus (HIV) has highlighted its capability to exploit a variety of strategies to enter and infect immune cells. Although CD4(+) T cells are well known as the major HIV target, with infection occurring through the canonical combination of the cluster of differentiation 4 (CD4) receptor and either the C-C chemokine receptor type 5 (CCR5) or C-X-C chemokine receptor type 4 (CXCR4) coreceptors, HIV has also been found to enter o ...[more]

PMID: 27410493

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Project description:ObjectiveTo understand perspectives on and preferences for preexposure prophylaxis (PrEP) for pregnant individuals who are at risk for human immunodeficiency virus (HIV) infection.MethodsIn this qualitative study, we purposively sampled and conducted in-depth interviews with pregnant participants at risk of HIV infection (indicated by a recent sexually transmitted infection [STI]) from a U.S. urban obstetrics clinic. Interview questions focused on perceived HIV risk, knowledge and perceptions of PrEP, and preferences for different PrEP formulations. We coded data using deductive and inductive codes, created matrices to explore patterns in findings, and wrote memos to interpret emergent themes.ResultsTwenty patients were enrolled. Median age of the participants was 24 years (interquartile range 19-26 years), 95.0% were African American, 65.0% were high school graduates, and 70.0% had unplanned pregnancies. Participants had low knowledge of PrEP and most saw themselves at low to no risk of HIV acquisition, despite their recent STI. Further, participants' low HIV risk perception and medication safety concerns reduced PrEP acceptability. Moreover, very few had discussed PrEP with their obstetrician-gynecologists (ob-gyns) during antenatal care, which further affected perceived acceptability. However, participants who did discuss PrEP with their ob-gyns had favorable perceptions of it. These participants indicated that they would choose a formulation based on individual preferences, which were largely shaped by perceived ease of use, acceptability, and prior experience with other medication regimens.ConclusionObstetrician-gynecologists may play an important role in increasing pregnant individuals' knowledge of and access to PrEP during pregnancy among those who are at risk of HIV acquisition. To maximize uptake and adherence during this time, PrEP formulations should be tailored to individual preferences. Prevention of HIV during this critical life transition is important not only for the long-term health and well-being of pregnant individuals and their infants, but to the plan to end the HIV epidemic in the United States by 2030.

Project description:BackgroundThe Guangxi government initiated two rounds of the Guangxi AIDS Conquering Project (GACP) in 2010 (Phase I) and 2015 (Phase II) to control human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) epidemics. However, the effectiveness of GACP in HIV prevention and treatment has rarely been reported. This study aimed to assess the effectiveness of the GACP implemented in Guangxi, China and provide data for strategy and praxis improvements to achieve Joint United Nations Programme on HIV/AIDS (UNAIDS) 95-95 targets.MethodsWe used spatial approaches to trace the spatiotemporal distribution properties, epidemic trends, and correlation between macroscopic factors and HIV incidence using data from the Chinese HIV/AIDS case reporting system to explore the effects of the GACP.ResultsDuring the GACP era, the HIV epidemic stabilized in urban centers, showing a downward trend in the Hengzhou and Binyang Counties in the eastern region, whereas it continued to increase in rural areas of the northwest region, such as the Long'an, Mashan, Shanglin, and Wuming Districts. The linear directional mean (LDM) of HIV infection reported cases displayed a southeast-northwest direction, with an LDM value of 12.52°. Compared with that in Phase I, Hengzhou withdrew from the high-high clustering area, and the west-north suburban counties pulled out the low-low clustering area during Phase II. Significant HIV clusters were identified in the eastern region during Phase I, whereas these clusters emerged in the northwestern areas during Phase II. Regarding HIV, socioeconomic status, population mobility, and medical care levels were the key social drivers of heterogeneous spatial distribution.ConclusionsThe GACP assisted in effectively managing the HIV epidemic in urban and eastern areas of Nanning City. However, prevention and control efforts in rural regions, particularly those located in the northwest, may not have yielded comparable outcomes. To address this disparity, allocating additional resources and implementing tailored intervention measures for these rural areas are imperative.

Dataset Information

Human Immunodeficiency Virus Immune Cell Receptors, Coreceptors, and Cofactors: Implications for Prevention and Treatment.

Publications

Human Immunodeficiency Virus Immune Cell Receptors, Coreceptors, and Cofactors: Implications for Prevention and Treatment.

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