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1.
Brain Behav Immun ; 120: 151-158, 2024 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-38777283

RESUMEN

OBJECTIVE: This epigenomics sub-study embedded within a randomized controlled trial examined whether an evidenced-based behavioral intervention model that decreased stimulant use altered leukocyte DNA methylation (DNAm). METHODS: Sexual minority men with HIV who use methamphetamine were randomized to a five-session positive affect intervention (n = 32) or an attention-control condition (n = 21), both delivered during three months of contingency management for stimulant abstinence. All participants exhibited sustained HIV virologic control - an HIV viral load less than 40 copies/mL at baseline and six months post-randomization. The Illumina EPIC BeadChip measured leukocyte methylation of cytosine-phosphate-guanosine (CpG) sites mapping onto five a priori candidate genes of interest (i.e., ADRB2, BDNF, FKBP5, NR3C1, OXTR). Functional DNAm pathways and soluble markers of immune dysfunction were secondary outcomes. RESULTS: Compared to the attention-control condition, the positive affect intervention significantly decreased methylation of CpG sites on genes that regulate ß2 adrenergic and oxytocin receptors. There was an inconsistent pattern for the direction of the intervention effects on methylation of CpG sites on genes for glucocorticoid receptors and brain-derived neurotrophic factor. Pathway analyses adjusting for the false discovery rate (padj < 0.05) revealed significant intervention-related alterations in DNAm of Reactome pathways corresponding to neural function as well as dopamine, glutamate, and serotonin release. Positive affect intervention effects on DNAm were accompanied by significant reductions in the self-reported frequency of stimulant use. CONCLUSIONS: There is an epigenetic signature of an evidence-based behavioral intervention model that reduced stimulant use, which will guide the identification of biomarkers for treatment responses.

2.
J Urban Health ; 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38831153

RESUMEN

Among sexual minority men (SMM), HIV and use of stimulants such as methamphetamine are linked with immune activation and systemic inflammation. Throughout the COVID-19 pandemic, SMM encountered financial challenges and structural obstacles that might have uniquely contributed to immune dysregulation and systemic inflammation, beyond the impacts of HIV and stimulant use. Between August 2020 and February 2022, 72 SMM with and without HIV residing in South Florida enrolled in a COVID-19 prospective cohort study. Multiple linear regression analyses examined unemployment, homelessness, and history of arrest as structural correlates of soluble markers of immune activation (i.e., sCD14 and sCD163) and inflammation (i.e., sTNF-α receptors I and II) at baseline after adjusting for HIV status, stimulant use, and recent SARS-CoV-2 infection. Enrolled participants were predominantly Latino (59%), gay-identified (85%), and with a mean age of 38 (SD, 12) years with approximately one-third (38%) of participants living with HIV. After adjusting for HIV status, SARS-CoV-2 infection, and recent stimulant use, unemployment independently predicted higher levels of sCD163 (ß = 0.24, p = 0.04) and sTNF-α receptor I (ß = 0.26, p = 0.02). Homelessness (ß = 0.25, p = 0.02) and history of arrest (ß = 0.24, p = 0.04) independently predicted higher levels of sCD14 after adjusting for HIV status, SARS-CoV-2 infection, and recent stimulant use. Independent associations exist between structural barriers and immune activation and systemic inflammation in SMM with and without HIV. Future longitudinal research should further elucidate complex bio-behavioral mechanisms linking structural factors with immune activation and inflammation.

3.
Int J Behav Med ; 2024 Apr 29.
Artículo en Inglés | MEDLINE | ID: mdl-38684565

RESUMEN

BACKGROUND: Important gaps exist in our understanding of loneliness and biobehavioral outcomes among sexual minority men (SMM), such as faster HIV disease progression. At the same time, SMM who use methamphetamine are approximately one-third more likely than non-users to develop cardiovascular disease. This study examined associations of loneliness, stimulant use, and cardiovascular risk in SMM with and without HIV. METHOD: Participants were enrolled from August 2020 to February 2022 in a 6-month prospective cohort study. The study leveraged self-report baseline data from 103 SMM, with a subset of 56 SMM that provided a blood sample to measure markers of cardiovascular risk. RESULTS: Loneliness showed negative bivariate associations with total cholesterol and LDL cholesterol in the cardiometabolic subsample (n = 56). SMM with methamphetamine use (t(101) = 2.03, p < .05; d = .42) and those that screened positive for a stimulant use disorder (t(101) = 2.07, p < .05; d = .46) had significantly higher mean loneliness scores. In linear regression analyses, negative associations of loneliness with LDL and total cholesterol were observed only among SMM who used methamphetamine. CONCLUSION: We observed lower cholesterol in SMM reporting loneliness and methamphetamine use. Thus, in addition to the observed associations of loneliness with cholesterol, there are important medical consequences of methamphetamine use including cardiovascular risk, higher HIV acquisition risk and progression, as well as stimulant overdose death. This cross-sectional study underscores the need for clinical research to develop and test interventions targeting loneliness among SMM with stimulant use disorders.

4.
Clin Infect Dis ; 77(3): 425-427, 2023 08 14.
Artículo en Inglés | MEDLINE | ID: mdl-37017008

RESUMEN

We created a brief version of The Index, a validated patient-reported measure that has potential to quickly identify patients at risk for poor retention. We analyzed Index scores from 2406 patients from 2016 to 2017 in a national cohort of patients in human immunodeficiency virus (HIV) care. Index scores predicted poor retention 12 months after administered.


Asunto(s)
Infecciones por VIH , VIH , Humanos , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Carga Viral
5.
AIDS Behav ; 27(8): 2523-2534, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-36682008

RESUMEN

Troubling disparities in viral suppression persist among transgender (trans) women living with HIV in the US. We utilized baseline data from a randomized controlled trial of a behavioral intervention among trans women living with HIV in San Francisco and Los Angeles, to identify the socio-ecological correlates of biologically confirmed viral suppression (< 200 HIV-1 RNA copies/mL). Among 253 participants, the mean age was 43 (SD = 11), 46% identified as Black or African American and 35% were virally non-suppressed. In adjusted Poisson regression models, the following barriers to viral suppression were identified: injection drug use [adjusted risk ratio (aRR) 0.78, 95% CI 0.65-0.93, Z = - 2.64, p = 0.008], methamphetamine use (aRR 0.65, 95% CI 0.51-0.83, Z = - 3.45, p = 0.001), amphetamine use (aRR 0.62, 95% CI 0.44-0.87, Z = - 2.75, p = 0.006), homelessness (aRR 0.79, 95% CI 0.63-0.98, Z = - 2.06, p = 0.039), and sex work (aRR 0.60, 95% CI 0.41-0.86, Z = - 2.77, p = 0.009). These findings underscore the importance of interventions that address the socio-ecological barriers to viral suppression among trans women in urban settings.


RESUMEN: Persisten disparidades preocupantes en la supresión viral entre las mujeres transgénero (trans) que viven con el VIH en los EE. UU. Utilizamos datos de referencia de un ensayo controlado aleatorizado de una intervención conductual entre mujeres trans que viven con el VIH en San Francisco y Los Ángeles, para identificar los correlatos socioecológicos de la supresión viral confirmada biológicamente (< 200 copias/ml de ARN del VIH-1). Entre 253 participantes, la edad media fue de 43 años (DE = 11), el 46% se identificó como negro o afroamericano y el 35% no tenía supresión viral. En modelos de regresión de Poisson ajustados, se identificaron las siguientes barreras para la supresión viral: uso de drogas inyectables [razón de riesgo ajustada (aRR) 0,78, IC del 95% 0,65­0,93, Z = − 2,64, p = 0,008], uso de metanfetamina (aRR 0,65, IC 95% 0,51­0,83, Z = − 3,45, p = 0,001), consumo de anfetaminas (aRR 0,62, IC 95% 0,44­0,87, Z = − 2,75, p = 0,006), falta de vivienda (aRR 0,79, IC 95% 0,63­0,98, Z = − 2,06, p = 0,039), y trabajo sexual (aRR 0,60, IC 95% 0,41­0,86, Z = − 2,77, p = 0,009). Estos hallazgos subrayan la importancia de las intervenciones que abordan las barreras socioecológicas para la supresión viral entre las mujeres trans en entornos urbanos.


Asunto(s)
Infecciones por VIH , Respuesta Virológica Sostenida , Personas Transgénero , Adulto , Femenino , Humanos , Negro o Afroamericano , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Los Angeles/epidemiología , San Francisco/epidemiología , Masculino
6.
J Neurovirol ; 28(3): 446-455, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35821194

RESUMEN

Although co-occurring methamphetamine (meth) use and HIV amplify the risk for neuropsychiatric comorbidities, the underlying neuroimmune mechanisms are not well characterized. We examined whether a detectable viral load and dysregulated metabolism of amino acid precursors for neurotransmitters predicted subsequent levels of sexual compulsivity and sexual sensation seeking. This 15-month longitudinal study enrolled 110 sexual minority men (SMM) living with HIV who had biologically confirmed meth use (i.e., reactive urine or hair toxicology results). Peripheral venous blood samples collected at baseline, 6 months, 12 months, and 15 months were used to measure a detectable viral load (> 40 copies/mL), the kynurenine/tryptophan (K/T) ratio, and the phenylalanine/tyrosine (P/T) ratio. The K/T and P/T ratios index dysregulated serotonin and catecholamine (e.g., dopamine) synthesis, respectively. In a cross-lagged panel model, a detectable viral load at 6 months predicted greater sexual compulsivity at 12 months after adjusting for prior levels of sexual compulsivity and recent stimulant use (ß = 0.26, p = 0.046). A greater P/T ratio at baseline predicted decreased sexual sensation seeking at 6 months (ß = - 0.25, p = 0.004) after adjusting for baseline sexual sensation seeking and recent stimulant use. Taken together, HIV replication and dysregulated catecholamine synthesis could potentiate sexual compulsivity while decreasing sexual pleasure in SMM who use meth.


Asunto(s)
Infecciones por VIH , Metanfetamina , Minorías Sexuales y de Género , Catecolaminas , Homosexualidad Masculina/psicología , Humanos , Estudios Longitudinales , Masculino , Metanfetamina/efectos adversos , Sexualidad
7.
Clin Infect Dis ; 73(7): e2175-e2183, 2021 10 05.
Artículo en Inglés | MEDLINE | ID: mdl-33372942

RESUMEN

BACKGROUND: We investigated the prospective association between a brief self-report measure of engagement in human immunodeficiency virus (HIV) care (the Index of Engagement in HIV Care; hereafter "Index") and suboptimal retention and viral suppression outcomes. METHODS: The Centers for AIDS Research Network of Integrated Clinical Systems cohort study combines medical record data with patient-reported outcomes from 8 HIV clinics in the United States, which from April 2016 to March 2017 included the 10-item Index. Multivariable logistic regression was used to estimate the risk and odds ratios of mean Index scores on 2 outcomes in the subsequent year: (1) not keeping ≥75% of scheduled HIV care appointments; and (2) for those with viral suppression at Index assessment, having viral load >200 copies/mL on ≥1 measurement. We also used generalized linear mixed models (GLMMs) to estimate the risk and odds ratios of appointment nonattendance or unsuppressed viral load at any given observation. We generated receiver operating characteristic curves for the full models overlaid with the Index as a sole predictor. RESULTS: The mean Index score was 4.5 (standard deviation, 0.6). Higher Index scores were associated with lower relative risk of suboptimal retention (n = 2576; logistic regression adjusted risk ratio [aRR], 0.88 [95% confidence interval, .87-.88]; GLMM aRR, 0.85 [.83-.87]) and lack of sustained viral suppression (n = 2499; logistic regression aRR, 0.75 [.68-.83]; GLMM aRR, 0.74 [.68-.80]). The areas under the receiver operating characteristic curve for the full models were 0.69 (95% confidence interval, .67-.71) for suboptimal retention and 0.76 (.72-.79) for lack of sustained viral suppression. CONCLUSIONS: Index scores are significantly associated with suboptimal retention and viral suppression outcomes.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Retención en el Cuidado , Fármacos Anti-VIH/uso terapéutico , Estudios de Cohortes , VIH , Infecciones por VIH/tratamiento farmacológico , Humanos , Medición de Resultados Informados por el Paciente , Estados Unidos , Carga Viral
8.
J Neurovirol ; 27(1): 178-182, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33460015

RESUMEN

This longitudinal study with 76 sexual minority men living with HIV who use methamphetamine examined whether dysregulation of essential amino acid precursors for neurotransmitters at baseline predicted positive and negative affect at 15 months. After controlling for covariates including baseline positive affect, a higher baseline kynurenine/tryptophan (K/T) ratio independently predicted lower positive affect at 15 months (ß = - 18.31; 95% CI = - 35.35, - 1.27; p = 0.036). Future clinical research should examine whether bio-behavioral interventions targeting tryptophan degradation could optimize treatments for people living with co-occurring HIV and stimulant use disorders.


Asunto(s)
Afecto/fisiología , Trastornos Relacionados con Anfetaminas/complicaciones , Infecciones por VIH/complicaciones , Infecciones por VIH/metabolismo , Triptófano/metabolismo , Adulto , Estimulantes del Sistema Nervioso Central , Humanos , Estudios Longitudinales , Masculino , Metanfetamina , Persona de Mediana Edad , Ensayos Clínicos Controlados Aleatorios como Asunto , Minorías Sexuales y de Género
9.
J Stroke Cerebrovasc Dis ; 30(5): 105675, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33677311

RESUMEN

OBJECTIVES: Cocaine use has been linked to stroke in several studies. However, few studies have considered the influence of cocaine use on stroke mechanisms such as small vessel disease (SVD). We conducted a study to assess associations between the toxicology-confirmed use of multiple drugs, including cocaine, and a marker of SVD, white matter hyperintensities (WMH). MATERIALS AND METHODS: We conducted a nested case-control study (n = 30) within a larger cohort study (N = 245) of homeless and unstably housed women recruited from San Francisco community venues. Participants completed six monthly study visits consisting of an interview, blood draw, vital sign assessment and baseline brain MRI. We examined associations between toxicology-confirmed use of multiple substances, including cocaine, methamphetamine, heroin, alcohol and tobacco, and WMH identified on MRI. RESULTS: Mean study participant age was 53 years, 70% of participants were ethnic minority women and 86% had a history of cocaine use. Brain MRIs indicated the presence of WMH (i.e., Fazekas score>0) in 54% (18/30) of imaged participants. The odds of WMH were significantly higher in women who were toxicology-positive for cocaine (Odd Ratio=7.58, p=0.01), but not in women who were toxicology-positive for other drugs or had several other cerebrovascular risk factors. CONCLUSIONS: Over half of homeless and unstably housed women showed evidence of WMH. Cocaine use is highly prevalent and a significant correlate of WMH in this population, while several traditional CVD risk factors are not. Including cocaine use in cerebrovascular risk calculators may improve stroke risk prediction in high-risk populations and warrants further investigation.


Asunto(s)
Enfermedades de los Pequeños Vasos Cerebrales/etiología , Trastornos Relacionados con Cocaína/complicaciones , Consumidores de Drogas , Vivienda , Personas con Mala Vivienda , Leucoencefalopatías/etiología , Poblaciones Vulnerables , Salud de la Mujer , Adulto , Enfermedades de los Pequeños Vasos Cerebrales/diagnóstico por imagen , Trastornos Relacionados con Cocaína/diagnóstico , Femenino , Humanos , Leucoencefalopatías/diagnóstico por imagen , Imagen por Resonancia Magnética , Persona de Mediana Edad , Medición de Riesgo , Factores de Riesgo , San Francisco , Detección de Abuso de Sustancias
10.
J Neurovirol ; 26(5): 779-784, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32728896

RESUMEN

Few studies have examined neuroimmune pathways that could contribute to impulsivity in people living with HIV who use substances. Eighty-four methamphetamine-using, sexual minority men with an undetectable HIV viral load were administered the Balloon Analogue Risk Task (BART), a behavioral measure of risk-taking propensity. We examined the associations between kynurenine/tryptophan ratio and phenylalanine/tyrosine ratio with BART scores using multiple linear regression. A higher kynurenine/tryptophan ratio was independently associated with greater BART scores (beta = 0.25; 95% CI = 0.05-1.23; p = 0.034). The phenylalanine/tyrosine ratio was not significantly associated with BART scores. Findings support the need for further research to elucidate the neuroimmune mechanisms linking tryptophan degradation with impulsivity to catalyze the development novel pharmacologic treatments for people living with HIV who use methamphetamine.


Asunto(s)
Fármacos Anti-VIH/uso terapéutico , Infecciones por VIH/psicología , Conducta Impulsiva , Metanfetamina/administración & dosificación , Asunción de Riesgos , Trastornos Relacionados con Sustancias/psicología , Adulto , Terapia Antirretroviral Altamente Activa , Biotransformación , Estudios Transversales , Infecciones por VIH/sangre , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Homosexualidad Masculina , Humanos , Quinurenina/sangre , Masculino , Metanfetamina/metabolismo , Persona de Mediana Edad , Fenilalanina/sangre , Pruebas Psicológicas , Trastornos Relacionados con Sustancias/sangre , Trastornos Relacionados con Sustancias/virología , Triptófano/sangre , Tirosina/sangre , Carga Viral
11.
J Urban Health ; 97(1): 78-87, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31907705

RESUMEN

Women who experience housing instability are at high risk for violence and have disproportionately high rates of emergency department (ED) use. However, little has been done to characterize the violence they experience, or to understand how it may be related to ED use. We recruited homeless and unstably housed women from San Francisco shelters, free meal programs, and single room occupancy (SRO) hotels. We used generalized estimating equations to examine associations between violence and any ED use (i.e., an ED visit for any stated reason) every 6 months for 3 years. Among 300 participants, 44% were African-American, and the mean age was 48 years. The prevalence of violence experienced in the prior 6 months included psychological violence (87%), physical violence without a weapon (48%), physical violence with a weapon (18%), and sexual violence (18%). While most participants (85%) who experienced physical violence with a weapon or sexual violence in the prior 6 months had not visited an ED, these were the only two violence types significantly associated with ED use when all violence types were included in the same model (ORphysical/weapon = 1.83, 95% CI 1.02-3.28; ORsexual = 2.15, 95% CI 1.30-3.53). Only violence perpetrated by someone who was not a primary intimate partner was significantly associated with ED use when violence was categorized by perpetrator. The need to reduce violence in this population is urgent. In the context of health care delivery, policies to facilitate trauma-informed ED care and strategies that increase access to non-ED care, such as street-based medicine, could have substantial impact on the health of women who experience homelessness and housing instability.


Asunto(s)
Servicio de Urgencia en Hospital/estadística & datos numéricos , Personas con Mala Vivienda/estadística & datos numéricos , Violencia/estadística & datos numéricos , Adulto , Femenino , Personas con Mala Vivienda/psicología , Vivienda , Humanos , Drogas Ilícitas , Persona de Mediana Edad , Prevalencia , San Francisco/epidemiología , Delitos Sexuales/estadística & datos numéricos
12.
AIDS Behav ; 23(9): 2326-2336, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31324996

RESUMEN

While poverty is an established barrier to achieving success at each step of the HIV care continuum, less is known about specific aspects of poverty and how they overlap with behavior in exceptionally low-income individuals who live in well-resourced areas. We considered unsuppressed viral load over 3 years among women living with HIV in San Francisco who used homeless shelters, low-income hotels and free meal programs. One-hundred twenty study participants were followed; 60% had > 1 unsuppressed viral load and 19% were unsuppressed at every visit. Across six-month intervals, the odds of unsuppressed viral load were 11% higher for every 10 nights spent sleeping on the street [Adjusted Odds Ratio (AOR) 1.11, 95% CI 1.02-1.20]; 16% higher for every 10 nights spent sleeping in a shelter (AOR/10 nights 1.16, 95% CI 1.06-1.27); 4% higher for every 10 nights spent sleeping in a single-room occupancy hotel (AOR/10 nights 1.04, 95% CI 1.02-1.07); and over threefold higher among women who experienced any recent incarceration (AOR 3.56, 95% CI 1.84-6.86). Violence and recent use of outpatient health care did not significantly predict viral suppression in adjusted analysis. While strategies to promote retention in care are important for vulnerable persons living with HIV, they are insufficient to ensure sustained viral suppression in low-income women experiencing homelessness and incarceration. Results presented here in combination with prior research linking incarceration to homelessness among women indicate that tailored interventions, which not only consider but prioritize affordable housing, are critical to achieving sustained viral suppression in low-income women living with HIV.


Asunto(s)
Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/virología , Personas con Mala Vivienda/estadística & datos numéricos , Vivienda Popular/estadística & datos numéricos , Carga Viral/efectos de los fármacos , Adolescente , Adulto , Femenino , Infecciones por VIH/epidemiología , Personas con Mala Vivienda/psicología , Humanos , Estudios Longitudinales , Persona de Mediana Edad , Oportunidad Relativa , Evaluación de Resultado en la Atención de Salud , Pobreza , San Francisco/epidemiología , Pruebas Serológicas , Adulto Joven
13.
AIDS Behav ; 23(9): 2467-2476, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-31407212

RESUMEN

This pilot randomized controlled trial examined the feasibility and acceptability of a Syndemics intervention targeting the intersection of stimulant use, trauma, and difficulties with HIV disease management in cocaine-using women. All participants received contingency management (CM) for 3 months with financial incentives for stimulant abstinence during thrice-weekly urine screening and refilling antiretroviral medications monthly. Sixteen participants were randomized to complete four expressive writing (n = 9) or four neutral writing (n = 7) sessions delivered during the CM intervention period. Completion rates for writing sessions were high (15 of 16 women completed all four sessions) and engagement in CM urine screening was moderate with women randomized to expressive writing providing a median of 11 non-reactive urine samples for stimulants. There were non-significant trends for those randomized to expressive writing to provide more CM urine samples that were non-reactive for stimulants, report greater decreases in severity of cocaine use, and display reductions in log10 HIV viral load at 6 months. Although the Syndemics intervention was feasible and acceptable to many women, qualitative interviews with eligible participants who were not randomized identified structural and psychological barriers to engagement. Further clinical research is needed to test the efficacy of Syndemics interventions with HIV-positive, cocaine-using women.


Asunto(s)
Antirretrovirales/uso terapéutico , Trastornos Relacionados con Cocaína/complicaciones , Infecciones por VIH/tratamiento farmacológico , Motivación , Aceptación de la Atención de Salud , Sindémico , Escritura , Adulto , Terapia Conductista , Estimulantes del Sistema Nervioso Central/administración & dosificación , Estimulantes del Sistema Nervioso Central/efectos adversos , Estudios de Factibilidad , Femenino , Infecciones por VIH/psicología , Seropositividad para VIH , Humanos , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Proyectos Piloto , Investigación Cualitativa , Reembolso de Incentivo , Resultado del Tratamiento , Carga Viral
14.
Brain Behav Immun ; 71: 108-115, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29679637

RESUMEN

Stimulant use may accelerate HIV disease progression through biological and behavioral pathways. However, scant research with treated HIV-positive persons has examined stimulant-associated alterations in pathophysiologic processes relevant to HIV pathogenesis. In a sample of 55 HIV-positive, methamphetamine-using sexual minority men with a viral load less than 200 copies/mL, we conducted RNA sequencing to examine patterns of leukocyte gene expression in participants who had a urine sample that was reactive for stimulants (n = 27) as compared to those who tested non-reactive (n = 28). Results indicated differential expression of 32 genes and perturbation of 168 pathways in recent stimulant users. We observed statistically significant differential expression of single genes previously associated with HIV latency, cell cycle regulation, and immune activation in recent stimulant users (false discovery rate p < 0.10). Pathway analyses indicated enrichment for genes associated with inflammation, innate immune activation, neuroendocrine hormone regulation, and neurotransmitter synthesis. Recent stimulant users displayed concurrent elevations in plasma levels of tumor necrosis factor - alpha (TNF-α) but not interleukin 6 (IL-6). Further research is needed to examine the bio-behavioral mechanisms whereby stimulant use may contribute to HIV persistence and disease progression.


Asunto(s)
Infecciones por VIH/inmunología , Leucocitos/efectos de los fármacos , Carga Viral/efectos de los fármacos , Adulto , Cocaína/efectos adversos , Cocaína/metabolismo , Progresión de la Enfermedad , Expresión Génica/efectos de los fármacos , Expresión Génica/genética , VIH/efectos de los fármacos , VIH/patogenicidad , Infecciones por VIH/complicaciones , Infecciones por VIH/fisiopatología , Seropositividad para VIH/metabolismo , Humanos , Interleucina-6/análisis , Interleucina-6/sangre , Masculino , Metanfetamina/metabolismo , Metanfetamina/farmacología , Persona de Mediana Edad , Análisis de Secuencia de ARN , Factor de Necrosis Tumoral alfa/análisis , Factor de Necrosis Tumoral alfa/sangre , Factor de Necrosis Tumoral alfa/efectos de los fármacos
15.
Cogn Behav Pract ; 25(2): 286-295, 2018 May.
Artículo en Inglés | MEDLINE | ID: mdl-32461714

RESUMEN

Among men who have sex with men (MSM), methamphetamine use is associated with multiple, overlapping syndemic conditions including increased risk for HIV seroconversion and onward HIV transmission. Contingency management (CM) is an evidence-based, behavioral intervention implemented to curb methamphetamine use and optimize HIV/AIDS prevention among MSM in San Francisco since 2003. We conducted a program evaluation to document the evolution of this 12-week CM program to include delivery of brief, individual counseling incorporating motivational interviewing and behavioral skills. A drop-in group delivered concurrently with CM urine-screening visits also provides peer support as well as referrals for other social and medical services. From December 2011-October 2013, a total of 131 clients enrolled in the CM program and provided a median of 22 urine samples (Interquartile Range = 10-34) that were non-reactive for methamphetamine. Findings support the feasibility and acceptability of integrating individual and group counseling with community-based CM for methamphetamine-using MSM.

16.
Sex Transm Infect ; 92(4): 305-8, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-26347544

RESUMEN

OBJECTIVE: The social context of poverty is consistently linked to Trichomonas vaginalis infection, yet few studies regarding T. vaginalis have been conducted exclusively among low-income individuals. We identified social determinants of health associated with prevalent T. vaginalis infection among homeless and unstably housed adult women. METHODS: Between April and October of 2010, we conducted cross-sectional T. vaginalis screening and behavioural interviews in an existing cohort of San Francisco homeless and unstably housed women. Data were analysed using multivariable logistical regression. RESULTS: Among 245 study participants, the median age was 47 years and 72% were of non-Caucasian race/ethnicity. T. vaginalis prevalence was 12%, compared to 3% in the general population, and 33% of infected individuals reported no gynaecological symptoms. In adjusted analysis, the odds of T. vaginalis infection were lower among persons older than 47 years, the population median (OR=0.14, 95% CI 0.04 to 0.38), and higher among those reporting recent short-term homeless shelter stays (OR=5.36, 95% CI 1.57 to 18.26). Race and income did not reach levels of significance. Sensitivity analyses indicated that testing all women who report recent unprotected sex would identify more infections than testing those who report gynaecological symptoms (20/30 vs 10/30; p=0.01). CONCLUSIONS: The prevalence of T. vaginalis is high among homeless and unstably housed adult women, over one-third of infected individuals have no gynaecological symptoms, and correlates of infection differ from those reported in the general population. Targeted screening and treatment among impoverished women reporting recent unprotected sex, particularly young impoverished women and all women experiencing short-term homelessness, may reduce complications related to this treatable infection.


Asunto(s)
Vivienda/estadística & datos numéricos , Personas con Mala Vivienda/estadística & datos numéricos , Factores Socioeconómicos , Vaginitis por Trichomonas/epidemiología , Vaginitis por Trichomonas/microbiología , Trichomonas vaginalis/aislamiento & purificación , Salud Urbana , Salud de la Mujer/estadística & datos numéricos , Adulto , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Pobreza/estadística & datos numéricos , Prevalencia , Factores de Riesgo , San Francisco/epidemiología , Conducta Sexual/estadística & datos numéricos , Vaginitis por Trichomonas/diagnóstico , Vaginitis por Trichomonas/prevención & control , Frotis Vaginal , Servicios de Salud para Mujeres , Adulto Joven
17.
AIDS Behav ; 20(7): 1572-83, 2016 07.
Artículo en Inglés | MEDLINE | ID: mdl-27150895

RESUMEN

Accurate beliefs about partners' viral suppression are important for HIV prevention and care. We fit multilevel mixed effects logistic regression models to examine associations between partners' viral suppression beliefs and objective HIV RNA viral load tests, and whether relationship dynamics were associated with accurate viral suppression beliefs over time. Male couples (N = 266 couples) with at least one HIV-positive partner on antiretroviral therapy completed five assessments over 2 years. Half of the 407 HIV-positive partners were virally suppressed. Of the 40 % who had inaccurate viral load beliefs, 80 % assumed their partner was suppressed. The odds of having accurate viral load beliefs decreased over time (OR = 0.83; p = 0.042). Within-couple differences in dyadic adjustment (OR = 0.66; p < 0.01) and commitment (OR = 0.82; p = 0.022) were negatively associated with accurate viral load beliefs. Beliefs about a partner's viral load may factor into sexual decision-making and social support. Couple-based approaches are warranted to improve knowledge of partners' viral load.


Asunto(s)
Composición Familiar , Infecciones por VIH/prevención & control , Parejas Sexuales , Carga Viral , Síndrome de Inmunodeficiencia Adquirida , Adulto , Comunicación , Infecciones por VIH/virología , Seropositividad para VIH , Humanos , Modelos Logísticos , Estudios Longitudinales , Masculino , San Francisco , Conducta Sexual , Confianza
18.
AIDS Behav ; 20(5): 1132-42, 2016 05.
Artículo en Inglés | MEDLINE | ID: mdl-26696259

RESUMEN

This study documented the outcomes of 108 HIV-positive persons receiving vocational rehabilitation services. Over a 12-month follow-up, participants reported significantly decreased odds of any unstable housing [Adjusted Odds Ratio (AOR) = 0.21; 95 % CI 0.05-0.90; p < .05] and increased odds of being employed at least part-time (AOR = 10.19; 95 % CI 2.40-43.21; p < .01). However, reductions in perceived barriers to employment and increases in income were more pronounced among those not receiving disability benefits at baseline. This was consistent with findings from baseline qualitative interviews with 22 participants where those not on disability were subject to bureaucratic hurdles to rapidly accessing benefits and anticipated stigma of being on disability that propelled them to rejoin the workforce. Vocational rehabilitation could address key structural barriers to optimizing HIV treatment as prevention, and novel approaches are needed to improve outcomes among individuals receiving disability benefits.


Asunto(s)
Personas con Discapacidad , Infecciones por VIH/rehabilitación , Rehabilitación Vocacional , Adulto , Empleo , Empleos Subvencionados , Femenino , Humanos , Renta , Entrevistas como Asunto , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Estigma Social
19.
BMC Public Health ; 16: 673, 2016 07 30.
Artículo en Inglés | MEDLINE | ID: mdl-27476110

RESUMEN

BACKGROUND: Contingency management (CM) is an evidence-based intervention providing tangible rewards as positive reinforcement for abstinence from stimulants such as methamphetamine. Integrative approaches targeting affect regulation could boost the effectiveness of CM in community-based settings and optimize HIV/AIDS prevention efforts. METHODS/DESIGN: This randomized controlled trial with HIV-positive, methamphetamine-using men who have sex with men (MSM) is examining the efficacy of a 5-session, individually delivered positive affect regulation intervention - Affect Regulation Treatment to Enhance Methamphetamine Intervention Success (ARTEMIS). ARTEMIS is designed to sensitize individuals to non-drug-related sources of reward as well as assist with managing depression and other symptoms of stimulant withdrawal during CM. HIV-positive, methamphetamine-using MSM who are enrolled in a community-based, 12-week CM program are randomized to receive ARTEMIS or an attention-matched control condition. Follow-up assessments are conducted at 3, 6, 12, and 15 months after enrollment in CM. Four peripheral venous blood samples are collected over the 15-month follow-up with specimen banking for planned biomarker sub-studies. The primary outcome is mean HIV viral load. Secondary outcomes include: sustained HIV viral suppression, T-helper cell count, psychological adjustment, stimulant use, and potentially amplified transmission risk behavior. DISCUSSION: Implementation of this randomized controlled trial highlights the importance of delineating boundaries between research activities and community-based service provision. It also provides insights into best practices for integrating the distinct agendas of academic and community partners in clinical research. This trial is currently enrolling and data collection is anticipated to be completed in September of 2018. TRIAL REGISTRATION: This trial was registered on clinicaltrials.gov ( NCT01926184 ) on August 16, 2013.


Asunto(s)
Trastornos Relacionados con Anfetaminas/rehabilitación , Infecciones por VIH , Homosexualidad Masculina , Metanfetamina , Adulto , Trastornos Relacionados con Anfetaminas/psicología , Terapia Conductista , Humanos , Masculino , Refuerzo en Psicología , Asunción de Riesgos , Parejas Sexuales , Resultado del Tratamiento
20.
Am J Epidemiol ; 181(10): 817-26, 2015 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-25834138

RESUMEN

Most studies about the association between exposure to violence and higher psychological vulnerability have been cross-sectional in nature. Using longitudinal data from the Shelter, Health, and Drug Outcomes Among Women Study on 300 homeless or unstably housed women infected with or at risk of becoming infected with human immunodeficiency virus who were living in San Francisco, California, in 2008-2012, we examined the relationship between recent violent victimization and mental health status, mental health-related emergency department visits, and psychiatric hospitalization. We used generalized estimating equations to account for potentially confounding time-invariant and time-varying variables, including comorbid psychiatric conditions and lifetime history of child abuse. A total of 207 (69%) women experienced childhood abuse. The median number of psychiatric diagnoses per woman at baseline was 8 (interquartile range, 5-11). Recent exposure to violence was associated with lower mental health status (b = -1.85, 95% confidence interval: -3.02, -0.68) and higher risks of mental health-related emergency department visits (adjusted risk ratio = 2.96, 95% confidence interval: 1.51, 5.78) and psychiatric hospitalizations (adjusted risk ratio = 2.32, 95% confidence interval: 1.10, 4.91). We did not find strong evidence of a reciprocal relationship. Among homeless or unstably housed women with severe preexisting comorbid psychiatric conditions, recent violence has adverse mental health consequences. Reducing ongoing violence may improve mental health in this population.


Asunto(s)
Víctimas de Crimen/psicología , Trastorno Depresivo/epidemiología , Personas con Mala Vivienda/psicología , Salud Mental , Violencia/psicología , Adulto , Femenino , Seronegatividad para VIH , Seropositividad para VIH , Estado de Salud , Humanos , Análisis Multivariante , San Francisco/epidemiología
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