Publications by authors named "Hector Bolivar"

Article Synopsis
  • Cocaine is a commonly abused drug among people living with HIV, negatively affecting their health by slowing down the decline of viral production after starting antiretroviral therapy and leading to higher viral loads and faster disease progression.
  • The study focused on 434 women with varying ancestry participating in a national cohort study, analyzing the impact of cocaine use on the HIV latent reservoir in their CD4+ T-cells.
  • Results showed that current and prior cocaine users have significantly larger HIV latent reservoir sizes compared to non-users, highlighting the need for more research on cocaine's effects on women's HIV outcomes.
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Integrase strand-transfer inhibitors (INSTIs) are associated with weight gain in women living with HIV (WLH). Relationships between drug exposure, baseline obesity, and INSTI-associated weight gain remain unclear. Data from 2006 to 2016 were analyzed from virally suppressed WLH enrolled in the Women's Interagency HIV Study, who switched/added an INSTI to antiretroviral therapy: [raltegravir (RAL), dolutegravir (DTG), or elvitegravir (EVG)].

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Hepatitis D virus (HDV) requires co-infection with hepatitis B virus (HBV). Human immunodeficiency virus (HIV) shares transmission routes with these viruses. Among 4,932 US women infected with or at-risk for HIV during 1994-2015, HBV surface antigen (HBsAg) positivity was more common in women with HIV (2.

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Background: Fracture rates have been reported to be higher among older women living with HIV (WLWH) than HIV- women. Hormone therapy with estrogen can reduce vasomotor symptoms (VMS) associated with menopause and prevent fractures. As data are limited on the benefits of hormone therapy use in WLWH, we examined associations of hormone therapy, use and fractures.

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The Middle East plays a central role in human history harbouring a vast diversity of ethnic, cultural and religious groups. However, much remains to be understood about past and present genomic diversity in this region. Here we present a multidisciplinary bioarchaeological analysis of two individuals dated to the late 7th and early 8th centuries, the Umayyad Era, from Tell Qarassa, an open-air site in modern-day Syria.

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Background: Prior studies have found that human immunodeficiency virus (HIV) infection is associated with impaired lung function and increased risk of chronic lung disease, but few have included large numbers of women. In this study, we investigate whether HIV infection is associated with differences in lung function in women.

Methods: This was a cross-sectional analysis of participants in the Women's Interagency HIV Study, a racially and ethnically diverse multicenter cohort of women with and without HIV.

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Background: Aging in people with HIV is associated with increased risk of developing synergistic conditions such as neurocognitive impairment, polypharmacy, and falls. We assessed associations between polypharmacy (use of 5 or more non-ART medications), use of neurocognitive adverse effects (NCAE) medications, and odds of falls in women with HIV (WWH) and without HIV (HIV-).

Methods: Self-reported falls and medication use data were contributed semiannually by 1872 (1315 WWH and 557 HIV-) Women's Interagency HIV Study participants between 2014 and 2016.

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Neurologic complications of the human immunodeficiency virus (HIV) are common in treated individuals, and toxicity of certain antiretroviral therapies (ART) may contribute to cognitive impairment. We investigated exposures to specific ART and cognition among women living with HIV (WLWH). Virologically suppressed (viral load <200 copies/mL during at least two semi-annual visits) WLWH and age/race matched HIV-seronegative controls enrolled in the Women's Interagency HIV Study who completed at least two biennial cognitive assessments were included.

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Background: Given the challenges and costs associated with implementing HIV-1 incidence assay testing, there is great interest in evaluating the use of commercial HIV diagnostic tests for determining recent HIV infection. A diagnostic test with the capability of providing reliable data for the determination of recent HIV infection without substantial modifications to the test protocol would have a significant impact on HIV surveillance. The Abbott ARCHITECT HIV Ag/Ab Combo Assay is an antigen/antibody immunoassay, which meets the criteria as the first screening test in the recommended HIV laboratory diagnostic algorithm for the United States.

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Cognitive impairment remains frequent and heterogeneous in presentation and severity among virally suppressed (VS) women with HIV (WWH). We identified cognitive profiles among 929 VS-WWH and 717 HIV-uninfected women from 11 Women's Interagency HIV Study sites at their first neuropsychological (NP) test battery completion comprised of: Hopkins Verbal Learning Test-Revised, Trail Making, Symbol Digit Modalities, Grooved Pegboard, Stroop, Letter/Animal Fluency, and Letter-Number Sequencing. Using 17 NP performance metrics (T-scores), we used Kohonen self-organizing maps to identify patterns of high-dimensional data by mapping participants to similar nodes based on T-scores and clustering those nodes.

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Background: Frailty may occur at younger ages among HIV+ populations. We evaluated associations of the frailty status with self-reported single and recurrent falls in the Women's Interagency HIV Study (WIHS).

Methods: The frailty status was defined using the Fried Frailty Phenotype (FFP) among 897 HIV+ and 392 HIV- women; median age 53 years.

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Objective: Statistical techniques used to study cognitive function in HIV typically yield normative estimates and can mask the heterogeneity in cognitive trajectories over time. We applied a novel statistical approach to identify clusters of individuals with distinct patterns of change in declarative memory in HIV-seropositive (HIV+) and HIV-seronegative (HIV-) women.

Methods: 1731 women from the Women's Interagency HIV Study, a multi-center, prospective cohort study, completed the Hopkins Verbal Learning Test-Revised (HLVT-R) at >2 visits.

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Background: Integrase strand transfer inhibitors (INSTIs) have been associated with weight gain among women living with HIV. We aimed to investigate the association between INSTIs and change in cardiometabolic risk indicators.

Setting: Retrospective cohort.

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Introduction: Foreign-born persons comprise ~13% of the US population. Immigrants, especially women, often face a complex set of social and structural factors that negatively impact health outcomes including greater risk of HIV infection. We described socio-demographic, clinical and immunological characteristics and AIDs and non-AIDS death among foreign-born women living with HIV (FBWLWH) participating in the US Women's Interagency HIV Study (WIHS) in the US from 1994 to 2016.

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Article Synopsis
  • HIV infection leads to ongoing immune activation and the presence of latent infected cells, which can affect a patient's quality of life despite effective antiretroviral therapy (ART) that suppresses viral load.
  • A new vaccine called HIVAX, when administered during ART, has been shown to significantly reduce immune activation and inflammation, and also decrease the levels of latent HIV infection over a 16-week period.
  • Interestingly, while immune activation decreased, there was an increase in specific memory T cell markers, and changes in gene expression related to immune and antiviral responses were observed, indicating complex effects of the vaccine on the immune system.
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Introduction: Marijuana use is common among persons living with HIV, but whether it's use increases the risk of type 2 diabetes in this population has not been explored.

Objective: To determine whether self-reported marijuana use is associated with incident type 2 diabetes in women and men living with and at risk for HIV.

Methods: We analyzed data from the Women's Interagency HIV Study (WIHS) and Multicenter AIDS Cohort Study (MACS), between 2000-2017 (WIHS) and 1999-2017 MACS.

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Background: Susceptibility to metabolic diseases may be influenced by mitochondrial genetic variability among people living with human immunodeficiency virus (HIV; PLWH), but remains unexplored in populations with African ancestry. We investigated the association between mitochondrial DNA (mtDNA) haplogroups and the homeostatic model assessments of β-cell function (HOMA-B) and insulin resistance (HOMA-IR), as well as incident diabetes mellitus (DM), among Black women living with or at risk for HIV.

Methods: Women without DM who had fasting glucose (FG) and insulin (FI) data for ≥2 visits were included.

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Objective: To determine whether domain-specific neurocognitive (NC) impairments predict falls in HIV+ compared with HIV- women.

Design: Cross-sectional data analysis from 825 HIV+ and 392 HIV- women in the Women's Interagency HIV Study with NC testing within 2 years before falls surveys.

Methods: NC impairment (T score <40) was assessed in 7 domains: executive function, psychomotor speed, attention, learning, memory, fluency, and fine motor function.

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Background: Integrase strand-transfer inhibitor (INSTI)-based antiretroviral therapy (ART) is recommended for human immunodeficiency virus (HIV) management. Although studies have suggested associations between INSTIs and weight gain, women living with HIV (WLHIV) have been underrepresented in research. We evaluated the effect of switching or adding INSTIs among WLHIV.

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Purpose: Voting may play a critical role in the allocation of social and structural resources to communities, which in turn shapes neighborhood environments, and ultimately, an individual's sexually transmitted infection (STI) risk. We assessed relationships among county-level voter turnout and felony voter disenfranchisement, and STIs.

Methods: This cross-sectional multilevel analysis included 666 women in Alabama, Florida, Georgia, Mississippi, and North Carolina enrolled in the Women's Interagency HIV Study between 2013 and 2015.

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Article Synopsis
  • - This study analyzed how social and physical neighborhood factors affect sexual network characteristics in HIV-seropositive and seronegative women in the U.S. South using data from 734 participants in the Women's Interagency HIV Study.
  • - Findings revealed that women living in socioeconomically disadvantaged areas perceived higher sex partner risk if they were HIV-positive, while HIV-negative women reported less non-monogamy in similar contexts.
  • - Additionally, greater neighborhood trust and cohesion lowered partner risk for both groups, although the number of alcohol outlets and non-profits showed no significant correlation with partner risk factors. Future research should focus on exploring the causal pathways linking neighborhood characteristics to partner selection and risks.
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Background: Although fracture rates are higher in HIV+ than HIV- women, whether HIV infection increases risk of falls is unclear. We determined the longitudinal occurrence and risk factors for falls in the Women's Interagency HIV Study (WIHS), and explored associations with cognitive complaints.

Methods: Recent (prior 6 months) self-reported falls were collected in 1,816 (1,250 HIV+; 566 HIV-) women over 24 months.

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