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1.
Am J Public Health ; 112(S4): S413-S419, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35763749

RESUMO

Researchers are increasingly recognizing the importance of studying and addressing intersectional stigma within the field of HIV. Yet, researchers have, arguably, struggled to operationalize intersectional stigma. To ensure that future research and methodological innovation is guided by frameworks from which this area of inquiry has arisen, we propose a series of core elements for future HIV-related intersectional stigma research. These core elements include multidimensional, multilevel, multidirectional, and action-oriented methods that sharpen focus on, and aim to transform, interlocking and reinforcing systems of oppression. We further identify opportunities for advancing HIV-related intersectional stigma research, including reducing barriers to and strengthening investments in resources, building capacity to engage in research and implementation of interventions, and creating meaningful pathways for HIV-related intersectional stigma research to produce structural change. Ultimately, the expected payoff for incorporating these core elements is a body of HIV-related intersectional stigma research that is both better aligned with the transformative potential of intersectionality and better positioned to achieve the goals of Ending the HIV Epidemic in the United States and globally. (Am J Public Health. 2022;112(S4):S413-S419. https://doi.org/10.2105/AJPH.2021.306710).


Assuntos
Infecções por HIV , Transtornos Mentais , Infecções por HIV/epidemiologia , Humanos , Estigma Social , Estados Unidos
2.
AIDS Care ; 33(6): 706-711, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-32838546

RESUMO

New modalities of Pre-exposure Prophylaxis (PrEP) such as long-acting injectable PrEP (LAI-PrEP) promise increased prevention of HIV transmission; however, similar biomedical interventions have not been met with universal adoption by healthcare providers or populations most affected by HIV. This qualitative study explores healthcare provider considerations for the rollout of LAI-PrEP. Eleven key-informant in-depth interviews were conducted with clinicians who prescribe daily oral PrEP. Participants reviewed a currently proposed LAI regimen and were asked to reflect on its implications for their clinical practice. Interviews were transcribed verbatim and thematically coded, with results organized using the Consolidated Framework for Implementation Research (CFIR). All participants expressed interest in prescribing LAI-PrEP and anticipated that at least some patients would be interested. Participants identified characteristics of the intervention, inner intervention setting, and outer intervention setting that will be influential in bringing LAI-PrEP to scale. Clinicians in the South have unique insights into the challenges of and opportunities for successful rollout of future PrEP regimens. Bringing these insights into a CFIR framework highlights the nuances surrounding LAI-PrEP, including structural concerns such as cost barriers and access to in-person healthcare services. It is critical to address these challenges to ensure successful implementation of new PrEP formulations.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , Profilaxia Pré-Exposição , Fármacos Anti-HIV/uso terapêutico , Georgia , Infecções por HIV/tratamento farmacológico , Infecções por HIV/prevenção & controle , Pessoal de Saúde , Humanos
3.
Sex Transm Infect ; 96(6): 429-431, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-31444277

RESUMO

OBJECTIVES: Emerging literature shows that racialised police brutality, a form of structural racism, significantly affects health and well-being of racial/ethnic minorities in the USA. While public health research suggests that structural racism is a distal determinant of sexually transmitted infections (STIs) among Black people, no studies have empirically linked police violence to STIs. To address this gap, our study measures associations between police killings and rates of STIs among Black residents of US metropolitan statistical areas (MSAs). METHODS: This cross-sectional ecological analysis assessed associations between the number of Black people killed by police in 2015 and rates of primary and secondary syphilis, gonorrhoea and chlamydia per 100 000 Black residents of all ages in 2016 in 75 large MSAs. Multivariable models controlled for MSA-level demographic and socioeconomic characteristics, police expenditures, violent crime, arrest and incarceration rates, insurance rates and healthcare funding. RESULTS: In 2015, the median number of Black people killed by police per MSA was 1.0. In multivariable models, police killings were positively and significantly associated with syphilis and gonorrhoea rates among Black residents. Each additional police killing in 2015 was associated with syphilis rates that were 7.5% higher and gonorrhoea rates that were 4.0% higher in 2016. CONCLUSIONS: Police killings of Black people may increase MSA-level risk of STI infections among Black residents. If future longitudinal analyses support these findings, efforts to reduce STIs among Black people should include reducing police brutality and addressing mechanisms linking this violence to STIs.


Assuntos
Negro ou Afro-Americano/estatística & dados numéricos , Homicídio/estatística & dados numéricos , Polícia , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções por Chlamydia/epidemiologia , Estudos Transversais , Gonorreia/epidemiologia , Humanos , Análise Multivariada , Fatores Socioeconômicos , Sífilis/epidemiologia , Estados Unidos/epidemiologia
4.
AIDS Behav ; 23(Suppl 3): 266-275, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31463712

RESUMO

Minority stress theory posits that homonegativity-whether experienced, anticipated, or internalized-adversely impacts health. We conducted qualitative interviews with 28 YB-GBMSM living with HIV to explore manifestations of homonegativity over the life course. Thematic analysis identified patterns in the ways that homonegativity was discussed at different points in participants' lives. Stifling, and sometimes traumatic, familial and religious environments led to experienced homonegativity early in life. These experiences led to anticipated and internalized homonegativity, which in turn shaped sexual identity formation processes in adolescence and into young adulthood. Ultimately, many participants distanced themselves from home environments, seeking and often finding extrafamilial support. Most participants eventually reached self-acceptance of both their sexuality and HIV status. In conclusion, experienced, anticipated and internalized homonegativity were pervasive as YB-GBMSM navigated family and religious environments over the life course. Future interventions should work with youth, families, and churches to prevent these harmful experiences.


Assuntos
Bissexualidade/etnologia , População Negra/psicologia , Negro ou Afro-Americano/psicologia , Infecções por HIV/diagnóstico , Homossexualidade Masculina/etnologia , Adolescente , Adulto , Bissexualidade/psicologia , População Negra/etnologia , Georgia/epidemiologia , Infecções por HIV/etnologia , Infecções por HIV/psicologia , Homossexualidade Masculina/psicologia , Humanos , Entrevistas como Assunto , Masculino , Grupos Minoritários , Pesquisa Qualitativa , Comportamento Sexual , Minorias Sexuais e de Gênero/psicologia , Adulto Jovem
5.
Clin Infect Dis ; 66(6): 936-944, 2018 03 05.
Artigo em Inglês | MEDLINE | ID: mdl-29069298

RESUMO

Background: Much has been written about the impact of human immunodeficiency virus (HIV) among young (13-24) sexual minority men (SMM). Evidence for concern is substantial for emerging adult (18-24 years) SMM. Data documenting the burden and associated risk factors of HIV among adolescent SMM (<18 years) remain limited. Methods: Adolescent SMM aged 13-18 years were recruited in 3 cities (Chicago, New York City, and Philadelphia) for interview and HIV testing. We used χ2 tests for percentages of binary variables and 1-way analysis of variance for means of continuous variables to assess differences by race/ethnicity in behaviors. We calculated estimated annual HIV incidence density (number of HIV infections per 100 person-years [PY] at risk). We computed Fisher's exact tests to determine differences in HIV prevalence by selected characteristics. Results: Of 415 sexually active adolescent SMM with a valid HIV test result, 25 (6%) had a positive test. Estimated annual HIV incidence density was 3.4/100 PY; incidence density was highest for blacks, followed by Hispanics, then whites (4.1, 3.2, and 1.1/100 PY, respectively). Factors associated with higher HIV prevalence included black race; ≥4 male partners, condomless anal sex, and exchange sex in the past 12 months; and a recent partner who was older, black, HIV-infected, or had ever been in jail or prison (P < .05). Conclusions: HIV-related risk behaviors, prevalence, and estimated incidence density for adolescent SMM were high, especially for minority SMM. Our findings suggest that initiating intervention efforts early may be helpful in combating these trends.


Assuntos
Infecções por HIV/epidemiologia , Homossexualidade Masculina , Adolescente , Negro ou Afro-Americano/estatística & dados numéricos , Chicago/epidemiologia , Cidades , Preservativos , HIV , Infecções por HIV/etnologia , Hispânico ou Latino/estatística & dados numéricos , Humanos , Incidência , Masculino , Cidade de Nova Iorque/epidemiologia , Philadelphia/epidemiologia , Prevalência , Fatores de Risco , Assunção de Riscos , Comportamento Sexual , Parceiros Sexuais , Minorias Sexuais e de Gênero , População Branca/estatística & dados numéricos
6.
AIDS Behav ; 22(9): 3024-3032, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29619586

RESUMO

Social capital, the sum of an individual's resource-containing social network connections, has been proposed as a facilitator of successful HIV care engagement. We explored relationships between social capital, psychological covariates (depression, stigma and internalized homonegativity), and viral suppression in a sample of young Black gay, bisexual and other men who have sex with men (YB-GBMSM). We recruited 81 HIV-positive YB-GBMSM 18-24 years of age from a clinic setting. Participants completed a cross-sectional survey, and HIV-1 viral load (VL) measurements were extracted from the medical record. Sixty-five percent (65%) were virally suppressed (HIV-1 VL ≤ 40 copies/ml). Forty-seven percent (47%) had a positive depression screen. Depressive symptoms affected viral suppression differently in YB-GBMSM with lower vs. higher social capital (p = 0.046, test for statistical interaction between depression and social capital). The odds of viral suppression among YB-GBMSM with lower social capital was 93% lower among those with depressive symptoms (OR 0.07, p = 0.002); however, there was no association between depressive symptoms and viral suppression among those with higher social capital. Our results suggest that social capital may buffer the strong negative effects of depressive symptoms on clinical outcomes in YB-GBMSM living with HIV. In addition to treating depression, there is a role for interventions to augment social capital among YB-GBMSM living with HIV as a strategy for enhancing care engagement.


Assuntos
População Negra/psicologia , Depressão/psicologia , Infecções por HIV/psicologia , Homossexualidade Masculina/psicologia , Minorias Sexuais e de Gênero/psicologia , Capital Social , Carga Viral , Adolescente , Adulto , Estudos Transversais , Depressão/diagnóstico , Depressão/etnologia , Infecções por HIV/terapia , Homossexualidade Masculina/etnologia , Humanos , Masculino , Viabilidade Microbiana , Preconceito/psicologia , Comportamento Sexual/estatística & dados numéricos , Estigma Social , Adulto Jovem
7.
AIDS Care ; 30(sup4): 51-58, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30626207

RESUMO

Young Black gay/bisexual and other men who have sex with men (YB-GBMSM) are disproportionately impacted by HIV/AIDS. Novel intervention strategies are needed to optimize engagement in HIV care for this population. We sought to develop a group-level intervention to enhance resilience by augmenting social capital (defined as the sum of resources in an individual's social network) among YB-GBMSM living with HIV, with the ultimate goal of improving engagement in HIV care. Our multiphase, community-based participatory research (CBPR) intervention development process included: (1) Development and maintenance of a youth advisory board (YAB) comprised of YB-GBMSM living with HIV; (2) Qualitative in-depth interviews with YB-GBMSM living with HIV; (3) Qualitative in-depth interviews with care and service providers at clinics and community-based organizations; and (4) Collaborative development of intervention modules and activities with our YAB, informed by social capital theory and our formative research results. The result of this process is Brothers Building Brothers By Breaking Barriers, a two-day, 10-module group-level intervention. The intervention does not focus exclusively on HIV, but rather takes a holistic approach to supporting youth and enhancing resilience. Intervention modules aim to develop resilience at the individual level (exploration of black gay identity, development of critical self-reflection and coping skills), social network level (exploring strategies for navigating family and intimate relationships) and community level (developing strategies for navigating clinical spaces and plans for community participation). Most intervention activities are interactive, in order to facilitate new social network connections - and accompanying social capital - within intervention groups. In summary, our intensive CBPR approach resulted in a novel, culturally-specific intervention designed to enhance HIV care engagement by augmenting resilience and social capital among YB-GBMSM living with HIV.


Assuntos
Antirretrovirais/uso terapêutico , Bissexualidade/psicologia , População Negra/psicologia , Infecções por HIV/tratamento farmacológico , Homossexualidade Masculina/psicologia , Resiliência Psicológica , Comportamento Social , Capital Social , Adaptação Psicológica , Adolescente , Adulto , Negro ou Afro-Americano/psicologia , Infecções por HIV/epidemiologia , Infecções por HIV/psicologia , Humanos , Relações Interpessoais , Entrevistas como Assunto , Masculino , Pesquisa Qualitativa , Minorias Sexuais e de Gênero
9.
AIDS Behav ; 21(1): 227-237, 2017 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27830344

RESUMO

MSM bear a disproportionate burden of the HIV epidemic. Enacted stigma (overt negative actions) against sexual minorities may play an important role in increasing HIV risk among this population. Using data from the 2011 National HIV Behavioral Surveillance system, MSM cycle, we examined the independent associations between three measures of enacted stigma (verbal harassment, discrimination, physical assault) and engagement in each of four HIV-related risk behaviors as outcomes: condomless anal intercourse (CAI) at last sex with a male partner of HIV discordant or unknown status and, in the past 12 months, CAI with a male partner, ≥4 male sex partners, and exchange sex. Of 9819 MSM, 32% experienced verbal harassment in the past 12 months, 23% experienced discrimination, and 8% experienced physical assault. Discordant CAI at last sex with a male partner was associated with previous discrimination and physical assault. Past 12 month CAI with a male partner, ≥4 male sex partners, and exchange sex were each associated with verbal harassment, discrimination, and physical assault. These findings indicate that a sizable proportion of MSM report occurrences of past 12 month enacted stigma and suggest that these experiences may be associated with HIV-related risk behavior. Addressing stigma towards sexual minorities must involve an integrated, multi-faceted approach, including interventions at the individual, community, and societal level.


Assuntos
Infecções por HIV , Comportamentos de Risco à Saúde , Comportamento Sexual , Estigma Social , Adolescente , Adulto , Bissexualidade , Preservativos/estatística & dados numéricos , Homossexualidade Masculina , Humanos , Masculino , Pessoa de Meia-Idade , Assunção de Riscos , Parceiros Sexuais , Minorias Sexuais e de Gênero , Sexo sem Proteção , Adulto Jovem
10.
J Infect Dis ; 213(5): 776-83, 2016 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-26486637

RESUMO

BACKGROUND: Over half of human immunodeficiency virus (HIV) infections in the United States occur among men who have sex with men (MSM). Among MSM, 16% of estimated new infections in 2010 occurred among black MSM <25 years old. METHODOLOGY: We analyzed National HIV Behavioral Surveillance data on MSM from 20 cities. Poisson models were used to test racial disparities, by age, in HIV prevalence, HIV awareness, and sex behaviors among MSM in 2014. Data from 2008, 2011, and 2014 were used to examine how racial/ethnic disparities changed across time. RESULTS: While black MSM did not report greater sexual risk than other MSM, they were most likely to be infected with HIV and least likely to know it. Among black MSM aged 18-24 years tested in 2014, 26% were HIV positive. Among white MSM aged 18-24 years tested in 2014, 3% were HIV positive. The disparity in HIV prevalence between black and white MSM increased from 2008 to 2014, especially among young MSM. CONCLUSIONS: Disparities in HIV prevalence between black and white MSM continue to increase. Black MSM may be infected with HIV at younger ages than other MSM and may benefit from prevention efforts that address the needs of younger men.


Assuntos
Envelhecimento , Infecções por HIV/psicologia , Homossexualidade Masculina/estatística & dados numéricos , Grupos Raciais/psicologia , Adolescente , Adulto , Coleta de Dados , Infecções por HIV/epidemiologia , Infecções por HIV/etnologia , Humanos , Masculino , Pessoa de Meia-Idade , Distribuição de Poisson , Fatores de Risco , Fatores de Tempo , Estados Unidos/epidemiologia , Adulto Jovem
11.
Am J Public Health ; 106(5): 808-14, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-26890175

RESUMO

Several studies have implicated the sexual networks of Black men who have sex with men (MSM) as facilitating disproportionally high rates of new HIV infections within this community. Although structural disparities place these networks at heightened risk for infection, HIV prevention science continues to describe networks as the cause for HIV disparities, rather than an effect of structures that pattern infection. We explore the historical relationship between public health and Black MSM, arguing that the current articulation of Black MSM networks is too often incomplete and counterproductive. Public health can offer a counternarrative that reconciles epidemiology with the social justice that informs our discipline, and that is required for an effective response to the epidemic among Black MSM.


Assuntos
Negro ou Afro-Americano , Infecções por HIV/etnologia , Infecções por HIV/prevenção & controle , Homossexualidade Masculina , Saúde Pública , Justiça Social , Disparidades nos Níveis de Saúde , Humanos , Masculino , Fatores de Risco , Comportamento Sexual , Apoio Social
13.
J Psychopathol Clin Sci ; 133(4): 321-332, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38661640

RESUMO

Although suicide rates are stable or decreasing among White communities, rates are increasing among Black communities, a trend that appears to be disproportionately affecting Black lesbian, gay, bisexual, and queer (LGBQ) people. To understand the structural drivers and mechanisms of these trends, we examined associations between U.S. state-level racist and heterosexist criminal legal policies and policing, discrimination, and suicidality among White and Black, heterosexual and LGBQ, communities. We recruited 5,064 participants in 2021 using online census-driven quota sampling. Structural equation modeling estimated associations from objective indicators of racist and heterosexist criminal legal policies to self-reported police stops, discrimination, and suicidal ideation and behavior. For White heterosexual participants, racist (ß = -.22, SE = 0.03, p < .001) and heterosexist (ß = -.26, SE = 0.03, p < .001) policies were negatively associated with police stops. For White LGBQ participants, racist and heterosexist policies were not significantly associated with police stops. For Black heterosexual participants, racist (ß = .30, SE = 0.11, p = .005), but not heterosexist, policies were positively associated with police stops. For Black LGBQ participants, racist (ß = .57, SE = 0.08, p < .001) and heterosexist (ß = .65, SE = 0.09, p < .001) policies were positively associated with police stops which, in turn, were positively associated with discrimination and suicidal ideation and behavior. Results provide evidence that racist and heterosexist state policies are linked to policing and interpersonal drivers of suicide inequities and suggest that repealing/preventing oppressive policies should be a suicide prevention imperative. (PsycInfo Database Record (c) 2024 APA, all rights reserved).


Assuntos
Polícia , Racismo , Minorias Sexuais e de Gênero , Ideação Suicida , População Branca , Humanos , Masculino , Estados Unidos/epidemiologia , Feminino , População Branca/psicologia , População Branca/estatística & dados numéricos , Adulto , Minorias Sexuais e de Gênero/psicologia , Racismo/psicologia , Polícia/psicologia , Negro ou Afro-Americano/psicologia , Negro ou Afro-Americano/estatística & dados numéricos , Pessoa de Meia-Idade , Adulto Jovem , Política Pública/legislação & jurisprudência
14.
Elife ; 122024 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-38385642

RESUMO

CD4 T follicular helper cells (Tfh) are essential for establishing serological memory and have distinct helper attributes that impact both the quantity and quality of the antibody response. Insights into Tfh subsets that promote antibody persistence and functional capacity can critically inform vaccine design. Based on the Tfh profiles evoked by the live attenuated measles virus vaccine, renowned for its ability to establish durable humoral immunity, we investigated the potential of a Tfh1/17 recall response during the boost phase to enhance persistence of HIV-1 Envelope (Env) antibodies in rhesus macaques. Using a DNA-prime encoding gp160 antigen and Tfh polarizing cytokines (interferon protein-10 (IP-10) and interleukin-6 (IL-6)), followed by a gp140 protein boost formulated in a cationic liposome-based adjuvant (CAF01), we successfully generated germinal center (GC) Tfh1/17 cells. In contrast, a similar DNA-prime (including IP-10) followed by gp140 formulated with monophosphoryl lipid A (MPLA) +QS-21 adjuvant predominantly induced GC Tfh1 cells. While the generation of GC Tfh1/17 cells with CAF01 and GC Tfh1 cells with MPLA +QS-21 induced comparable peak Env antibodies, the latter group demonstrated significantly greater antibody concentrations at week 8 after final immunization which persisted up to 30 weeks (gp140 IgG ng/ml- MPLA; 5500; CAF01, 2155; p<0.05). Notably, interferon γ+Env-specific Tfh responses were consistently higher with gp140 in MPLA +QS-21 and positively correlated with Env antibody persistence. These findings suggest that vaccine platforms maximizing GC Tfh1 induction promote persistent Env antibodies, important for protective immunity against HIV.


Assuntos
Vacinas contra a AIDS , HIV-1 , Animais , Macaca mulatta , Quimiocina CXCL10 , Anticorpos Anti-HIV , DNA
15.
Artigo em Inglês | MEDLINE | ID: mdl-38661910

RESUMO

The Counter Narrative Project (CNP) was founded to shift narratives and shatter stereotypes about Black gay, bisexual, and queer men to advance social justice. This paper describes three programs CNP implemented that were organized around collective memory as a strategy to respond to collective trauma experienced by this community.


Assuntos
Negro ou Afro-Americano , Minorias Sexuais e de Gênero , Justiça Social , Humanos , Masculino , Negro ou Afro-Americano/psicologia , Homossexualidade Masculina/psicologia , Homossexualidade Masculina/etnologia , Minorias Sexuais e de Gênero/psicologia
16.
J Acquir Immune Defic Syndr ; 93(1): 55-63, 2023 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-36706362

RESUMO

OBJECTIVES: This uncontrolled pilot study examined the feasibility, acceptability, and preliminary HIV and psychological health effects of iTHRIVE 365, a multicomponent intervention designed by and for Black same gender loving men (SGLM) to promote: health knowledge and motivation, Black SGLM social support, affirming health care, and housing and other economic resources. DESIGN METHODS: We conducted a 14-day daily diary study with 32 Black SGLM living with HIV connected to THRIVE SS in Atlanta, GA. Daily surveys assessed intervention engagement, antiretroviral medication (ART) use, depressive symptoms, anxiety symptoms, and emotion regulation difficulties. App paradata (ie, process data detailing app usage) assessed amount of intervention engagement via page access. Participants began receiving access to the intervention on day 7. After the 14-day daily diary period, participants responded to follow-up items on the user-friendliness, usefulness, helpfulness, and whether they would recommend iTHRIVE 365 to others. Chi-square analyses examined associations between intervention engagement and ART use, and dynamic structural equation modelling assessed longitudinal associations from intervention engagement to next-day psychological health. This intervention trial is registered on ClinicalTrials.gov (NCT05376397). RESULTS: On average, participants engaged with iTHRIVE 365 over once every other day and accessed intervention pages 4.65 times per day. Among participants who engaged with the intervention, 78% reported it was helpful to extremely helpful, 83% reported it was moderately to extremely useful, and 88% reported it was user-friendly and they would recommend it to others. On intervention engagement days, participants had higher odds of ART use, χ 2 (1) = 4.09, P = 0.04, than intervention nonengagement days. On days after intervention engagement, participants showed non-null decreases in depressive symptoms (τ = -0.14; 95% CI : = [-0.23, -0.05]) and emotion regulation difficulties (τ = -0.16; 95% CI : = [-0.24, -0.02]). CONCLUSIONS: Findings suggest iTHRIVE 365 is feasible, acceptable, and positively affects daily ART use, depressive symptoms, and emotion regulation difficulties.


Assuntos
Infecções por HIV , Humanos , Masculino , Antirretrovirais/uso terapêutico , Estudos de Viabilidade , Infecções por HIV/tratamento farmacológico , Motivação , Projetos Piloto
17.
bioRxiv ; 2023 Nov 02.
Artigo em Inglês | MEDLINE | ID: mdl-37503150

RESUMO

CD4 T follicular helper cells (Tfh) are essential for establishing serological memory and have distinct helper attributes that impact both the quantity and quality of the antibody response. Insights into Tfh subsets that promote antibody persistence and functional capacity can critically inform vaccine design. Based on the Tfh profiles evoked by the live attenuated measles virus vaccine, renowned for its ability to establish durable humoral immunity, we investigated the potential of a Tfh1/17 recall response during the boost phase to enhance persistence of HIV-1 Envelope (Env) antibodies in rhesus macaques. Using a DNA-prime encoding gp160 antigen and Tfh polarizing cytokines (interferon protein-10 (IP-10) and interleukin-6 (IL-6)), followed by a gp140 protein boost formulated in a cationic liposome-based adjuvant (CAF01), we successfully generated germinal center (GC) Tfh1/17 cells. In contrast, a similar DNA-prime (including IP-10) followed by gp140 formulated with monophosphoryl lipid A (MPLA)+QS-21 adjuvant predominantly induced GC Tfh1 cells. While the generation of GC Tfh1/17 cells with CAF01 and GC Tfh1 cells with MPLA+QS-21 induced comparable peak Env antibodies, the latter group demonstrated significantly greater antibody concentrations at week 8 after final immunization which persisted up to 30 weeks (gp140 IgG ng/ml- MPLA; 5500; CAF01, 2155; p <0.05). Notably, interferon γ+ Env-specific Tfh responses were consistently higher with gp140 in MPLA+QS-21 and positively correlated with Env antibody persistence. These findings suggest that vaccine platforms maximizing GC Tfh1 induction promote persistent Env antibodies, important for protective immunity against HIV.

18.
Nat Commun ; 14(1): 4789, 2023 08 08.
Artigo em Inglês | MEDLINE | ID: mdl-37553348

RESUMO

Route of immunization can markedly influence the quality of immune response. Here, we show that intradermal (ID) but not intramuscular (IM) modified vaccinia Ankara (MVA) vaccinations provide protection from acquisition of intravaginal tier2 simian-human immunodeficiency virus (SHIV) challenges in female macaques. Both routes of vaccination induce comparable levels of serum IgG with neutralizing and non-neutralizing activities. The protection in MVA-ID group correlates positively with serum neutralizing and antibody-dependent phagocytic activities, and envelope-specific vaginal IgA; while the limited protection in MVA-IM group correlates only with serum neutralizing activity. MVA-ID immunizations induce greater germinal center Tfh and B cell responses, reduced the ratio of Th1 to Tfh cells in blood and showed lower activation of intermediate monocytes and inflammasome compared to MVA-IM immunizations. This lower innate activation correlates negatively with induction of Tfh responses. These data demonstrate that the MVA-ID vaccinations protect against intravaginal SHIV challenges by modulating the innate and T helper responses.


Assuntos
Síndrome de Imunodeficiência Adquirida dos Símios , Vírus da Imunodeficiência Símia , Vacínia , Animais , Humanos , Feminino , Síndrome de Imunodeficiência Adquirida dos Símios/prevenção & controle , Vacínia/prevenção & controle , Macaca mulatta , Vaccinia virus , Vacinação , HIV , Anticorpos Antivirais
19.
LGBT Health ; 9(2): 122-130, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34981966

RESUMO

AbstractPurpose: We extended the focus on body image research beyond cisgender, White sexual minority men (SMM) by describing body image concerns among Black and Latinx SMM and transgender/gender nonconforming (TGNC) adults and by examining protective effects of community connection. Methods: From 2016 to 2020, 447 Black and Latinx SMM (94%) and TGNC (6%) individuals in Los Angeles provided data semiannually. Participant endorsement of any body image concerns was determined by five body image codes (weight, fitness, appearance, body area dissatisfaction, and general body image) applied to participants' open-ended lists of health and body concerns. Fixed effects multivariable logistic regression was performed to examine the association between gay and racial/ethnic community connection and odds of any body image concerns, accounting for multiple records per person. An interaction term between gay and racial/ethnic community connection approximated the protective effect of connection to multiple, intersecting communities. Results: The majority of participants (51%) reported a body image concern, most commonly weight concerns, at least once across three years. Body image concerns were more common among Latinx participants (χ2 = 17.79, p < 0.001) and participants experiencing food insecurity (χ2 = 4.11, p = 0.04) and unmet basic financial needs (χ2 = 10.56, p = 0.001). Gay community connection was protective against body image concerns, but only for participants who had high racial/ethnic community connection (adjusted odds ratio = 0.87, p = 0.05). Conclusion: Body image concerns were notable, especially among those with low community connection and higher socioeconomic burden. These findings suggest that building connections within SMM/TGNC and racial/ethnic communities may aid in building a support network that buffers against body image concerns.


Assuntos
Minorias Sexuais e de Gênero , Pessoas Transgênero , Imagem Corporal , Identidade de Gênero , Humanos , Masculino , Razão de Chances , Adulto Jovem
20.
PLoS One ; 17(8): e0264680, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35947604

RESUMO

BACKGROUND: HIV-focused organizations, care providers and research programs often hire Black gay, bisexual and other men who have sex with men (GBMSM) in their efforts to reach highly affected communities. Due to their unique social position within and outside of organizations, Black GBMSM are ideally situated to contribute to HIV care and prevention programming targeting their own communities, but may also be at risk for stress and burnout in these settings. Despite this critical role for Black GBMSM in efforts to end the epidemic, little is known about subjective experiences of Black GBMSM who work in the HIV field. METHODS: We conducted qualitative interviews with 19 Black GBMSM who were identified as key informants. All were working in community-based organizations, clinical or academic settings in the area of HIV prevention and treatment in Atlanta, Georgia. We used a thematic analysis approach to identify salient themes with respect to the workplace experiences of Black GBMSM as well as the role of their identities in their work in the field. RESULTS: Participants discussed: (1) Shared experiences and growth; (2) Work-related stressors; (3) Worker burnout; and (4) Commitment to continue working in the HIV field. On the whole, Black GBMSM derived meaning from their work, and found their intersectional identities to be a strength in fulfilling job duties. At the same time, Black GBMSM described multiple stresses faced as they balanced their personal and professional connections to this work, while also dealing with their own challenges related to discrimination, socioeconomic status, and health. Participants repeatedly described sacrificing their own well-being for the greater good of their communities, highlighting contributors to burnout within and outside of the workplace. CONCLUSIONS: Our participants derived meaning from their work in the HIV field and were affirmed by professional interactions with other Black GBMSM. At the same time, they also faced work-related and other psychosocial stressors that predisposed them to frustration and burnout. To promote workplace equity and wellness for Black GBMSM, we share recommendations for HIV-focused organizations that employ and serve men in this demographic.


Assuntos
Bissexualidade , Esgotamento Psicológico , Infecções por HIV , Homossexualidade Masculina , Síndrome da Imunodeficiência Adquirida , Bissexualidade/psicologia , Infecções por HIV/tratamento farmacológico , Homossexualidade Masculina/psicologia , Humanos , Masculino , Pesquisa Qualitativa , Comportamento Sexual , Minorias Sexuais e de Gênero
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