Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 2.888
Filtrar
1.
BMC Public Health ; 23(1): 2407, 2023 12 04.
Artículo en Inglés | MEDLINE | ID: mdl-38049776

RESUMEN

BACKGROUND: The HIV prevalence among Ethiopian female sex workers (FSWs) is estimated to be around 18.5%, which implies that FSWs' sexual partners are significantly exposed to HIV infection and that may be a major factor in HIV transmission in the community. However, it has long been known that using condoms correctly and consistently is an extremely cost-effective global method for preventing HIV infection, but inconsistent condom use (ICU) would pose the greatest proximal risk of HIV acquisition and transmission. Understanding the prevalence and associated risk factors of inconsistence condom use among FSWs would inform policymakers to design programmatic interventions in the context of Ethiopia. METHODS: This analysis used data from the 'National HIV and STIs Bio-behavioral Survey (NHSBS)', which was conducted between December 2019 up to May 2020 by using a respondent-driven sampling (RDS) technique among FSWs aged 15 years and older who were selling sex in selected major cities and towns in Ethiopia. A multi-level logistic regression model was fitted to assess town and individual-level variations simultaneously to adjust hierarchical variations. Statistical significance was determined by using a P-value less than 0.05 with a 95% confidence interval (CI) not including one. RESULTS: Overall, 6,085 FSWs from 16 cities and towns participated in the study. The prevalence of inconsistent condom use across the 16 cities and towns was 17.1% [95% CI (16.5, 17.8)]. Inconsistent condom use was significantly higher among FSWs who had depression compared to those without depression [AOR = 1.43; 95% CI (1.13,1.82)], used any drug [AOR = 1.43; 95% CI (1.14-1.79)], had history of sexual violence [AOR = 1.75; 95% CI (1.43, 2.16)], changed sex selling location [AOR = 1.27; 95% CI (1.06, 1.51)], longer period of sex selling experience [AOR = 3.01; 95% CI (2.27, 3.99)], ever had anal sex [AOR = 2.74; 95% CI (2.15, 3.5)], had ≥ 2 non-paying sexual partner [AOR = 2.99; 95% CI(2.26, 3.95)], selling sex `in more than two cities [AOR = 3.01;95% CI (2.27, 3.99)], who lacked access to condom [AOR = 2.1; 95% CI (1.69, 2.67)], and did not have HIV knowledge [AOR = 1.39; 95% CI (1.15, 1.68)]. CONCLUSION: Inconsistent condom use among FSWs is prevalent in Ethiopia and is associated with marital status, education status, depression, alcohol drinking, drug use, sexual violence, being raped, lack of knowledge about HIV, practising anal sex, selling sex in different locations, having more than two non-paying sexual partners, working in more than two cities, and lack of access to condom at the workplace. Programme interventions to enhance consistent condoms use among FSWs need to take these factors into consideration.


Asunto(s)
Infecciones por VIH , Trabajadores Sexuales , Humanos , Femenino , Condones , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Infecciones por VIH/etiología , Prevalencia , Etiopía/epidemiología
2.
JAMA ; 330(8): 736-745, 2023 08 22.
Artículo en Inglés | MEDLINE | ID: mdl-37606666

RESUMEN

Importance: An estimated 1.2 million persons in the US currently have HIV, and more than 760 000 persons have died of complications related to HIV since the first cases were reported in 1981. Although treatable, HIV is not curable and has significant health consequences. Therefore, effective strategies to prevent HIV are an important public health and clinical priority. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate the benefits and harms of preexposure prophylaxis with antiretroviral therapy for the prevention of HIV acquisition, and the diagnostic accuracy of risk assessment tools to identify persons at increased risk of HIV acquisition. Population: Adolescents and adults who do not have HIV and are at increased risk of HIV. Evidence Assessment: The USPSTF concludes with high certainty that there is a substantial net benefit from the use of effective antiretroviral therapy to reduce the risk of acquisition of HIV in persons at increased risk of acquiring HIV. Recommendation: The USPSTF recommends that clinicians prescribe preexposure prophylaxis using effective antiretroviral therapy to persons at increased risk of HIV acquisition to decrease the risk of acquiring HIV. (A recommendation).


Asunto(s)
Antirretrovirales , Infecciones por VIH , Profilaxis Pre-Exposición , Adolescente , Adulto , Humanos , Comités Consultivos , Antirretrovirales/administración & dosificación , Antirretrovirales/efectos adversos , Antirretrovirales/uso terapéutico , Infecciones por VIH/diagnóstico , Infecciones por VIH/epidemiología , Infecciones por VIH/etiología , Infecciones por VIH/prevención & control , Profilaxis Pre-Exposición/métodos , Profilaxis Pre-Exposición/normas , Servicios Preventivos de Salud , Salud Pública , Medición de Riesgo/métodos , Medición de Riesgo/normas , Estados Unidos/epidemiología
3.
Harm Reduct J ; 20(1): 97, 2023 07 28.
Artículo en Inglés | MEDLINE | ID: mdl-37507721

RESUMEN

BACKGROUND: Significant heterogeneity exists among people who use drugs (PWUD). We identify distinct profiles of syringe service program (SSP) clients to (a) evaluate differential risk factors across subgroups and (b) inform harm reduction programming. METHODS: Latent class analysis (LCA) was applied to identify subgroups of participants (N = 3418) in a SSP in Columbus, Ohio, from 2019 to 2021. Demographics (age, sex, race/ethnicity, sexual orientation, housing status) and drug use characteristics (substance[s] used, syringe gauge, needle length, using alone, mixing drugs, sharing supplies, reducing use, self-reported perceptions on the impact of use, and treatment/support resources) were used as indicators to define latent classes. A five-class LCA model was developed, and logistic regression was then employed to compare risk factors at program initiation and at follow-up visits between latent classes. RESULTS: Five latent classes were identified: (1) heterosexual males using opioids/stimulants with housing instability and limited resources for treatment/support (16.1%), (2) heterosexual individuals using opioids with stable housing and resources for treatment/support (33.1%), (3) individuals using methamphetamine (12.4%), (4) young white individuals using opioids/methamphetamine (20.5%), and (5) females using opioids/cocaine (17.9%). Class 2 served as the reference group for logistic regression models, and at the time of entry, class 1 was more likely to report history of substance use treatment, overdose, HCV, sharing supplies, and mixing drugs, with persistently higher odds of sharing supplies and mixing drugs at follow-up. Class 3 was more likely to report history of overdose, sharing supplies, and mixing drugs, but outcomes at follow-up were comparable. Class 4 was the least likely to report history of overdose, HCV, and mixing drugs, but the most likely to report HIV. Class 5 was more likely to report history of substance use treatment, overdose, HCV, sharing supplies, and mixing drugs at entry, and higher reports of accessing substance use treatment and testing positive for HCV persisted at follow-up. CONCLUSIONS: Considerable heterogeneity exists among PWUD, leading to differential risk factors that may persist throughout engagement in harm reduction services. LCA can identify distinct profiles of PWUD accessing services to tailor interventions that address risks, improve outcomes, and mitigate disparities.


Asunto(s)
Sobredosis de Droga , Infecciones por VIH , Hepatitis C , Metanfetamina , Abuso de Sustancias por Vía Intravenosa , Trastornos Relacionados con Sustancias , Humanos , Masculino , Femenino , Compartición de Agujas/efectos adversos , Abuso de Sustancias por Vía Intravenosa/epidemiología , Abuso de Sustancias por Vía Intravenosa/complicaciones , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Infecciones por VIH/etiología , Analgésicos Opioides , Análisis de Clases Latentes , Ohio/epidemiología , Trastornos Relacionados con Sustancias/epidemiología , Trastornos Relacionados con Sustancias/complicaciones , Sobredosis de Droga/complicaciones , Hepatitis C/epidemiología , Hepatitis C/complicaciones
4.
J Adolesc Health ; 73(2): 262-270, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-37294251

RESUMEN

PURPOSE: To determine changes in bone mineral density (BMD) and bone metabolism-related biomarkers among Thai adolescents with perinatally acquired HIV infection (PHIVA) at 3 years following completion of vitamin D and calcium (VitD/Cal) supplementation. METHODS: An observational follow-up study was conducted among PHIVA who received 48-week VitD/Cal supplementation (either high-dose [3,200 IU/1,200 mg daily] or standard-dose [400 IU/1,200 mg daily]). Lumbar spine BMD (LSBMD) was assessed by dual-energy x-ray absorptiometry. Serum 25-hydroxyvitamin D, intact parathyroid hormone, and bone turnover markers were measured. Changes in LSBMD z-scores and other bone parameters at 3 years after stopping VitD/Cal supplementation compared with baseline or week 48 of supplementation were assessed among participants previously receiving high-dose and standard-dose VitD/Cal supplementation. RESULTS: Of 114 enrolled PHIVA, 46% and 54% had previously received high-dose and standard-dose VitD/Cal supplementation, respectively. The median age was 20 years; 53% were male. At 3 years after completion of VitD/Cal supplementation, we observed a significant decline in 25-hydroxyvitamin D and increase in intact parathyroid hormone but no significant rebounds of C-terminal telopeptides of collagen type I and procollagen type I amino-terminal propeptides and no significant changes in LSBMD z-scores among PHIVA in both treatment groups, compared with the measurements at week 48 of supplementation. Notably, LSBMD z-scores at 3 years after stopping VitD/Cal supplements were not significantly altered from baseline evaluations in both PHIVA groups. DISCUSSION: Three years after completion of high-dose or standard-dose VitD/Cal supplementation, LSBMD z-scores of our Thai PHIVA were not significantly changed from baseline and week 48 of supplementation. VitD/Cal supplementation of PHIVA during periods of peak bone mass accrual may have sustained and long-term skeletal benefits.


Asunto(s)
Densidad Ósea , Infecciones por VIH , Adolescente , Adulto , Femenino , Humanos , Masculino , Adulto Joven , Calcio/uso terapéutico , Suplementos Dietéticos , Estudios de Seguimiento , VIH , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/etiología , Infecciones por VIH/transmisión , Hormona Paratiroidea/uso terapéutico , Pueblos del Sudeste Asiático , Vitamina D , Vitaminas/uso terapéutico , Transmisión Vertical de Enfermedad Infecciosa
5.
Lancet HIV ; 10(5): e332-e342, 2023 05.
Artículo en Inglés | MEDLINE | ID: mdl-37062293

RESUMEN

Intramuscular injection of long-acting cabotegravir and rilpivirine is a novel, long-acting antiretroviral therapy (ART) combination approved for use as a fully suppressive regimen for people living with HIV. Long-acting cabotegravir with rilpivirine ART has reduced required dosing frequency from once daily to once every month or every 2 months injections. This new era of long-acting ART, which includes other antiretrovirals and formulations in various stages of clinical development, holds tremendous promise to change the standard of HIV treatment. Although long-acting ART has high potential to be revolutionary in the landscape of HIV care, prevention, and treatment cascade, more data are needed to substantiate its efficacy and cost-effectiveness among patients at risk of non-adherence and across age groups, pregnancy, and post partum. Advocacy efforts and policy changes to optimise a sustained, high-quality, equitable reach of long-acting ART, especially in low-income and middle-income countries where most people living with HIV reside, are needed to realise the full benefits of long-acting ART.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Humanos , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/etiología , Antirretrovirales/uso terapéutico , Rilpivirina/efectos adversos , Inyecciones Intramusculares/efectos adversos
6.
AIDS Care ; 35(11): 1741-1748, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-36912767

RESUMEN

Evidence suggests adverse health effects from vaporized nicotine (VN) use, such as electronic "e" cigarettes, and limited efficacy to aid tobacco cessation. People with HIV (PWH) smoke tobacco at higher rates than the general population, with greater morbidity, highlighting the necessity of effective tobacco cessation tools. PWH may be more vulnerable to adverse effects of VN. Using semi-structured 1:1 interviews, we examined health beliefs regarding VN, patterns of use, and perceived effectiveness for tobacco cessation among PWH in HIV care at three geographically diverse U.S. sites. PWH (n = 24) had limited understanding of VN product content or health effects, presuming VN less harmful than tobacco cigarettes (TC). VN failed to adequately replicate the psychoactive effects or desired ritual of smoking TC. Concurrent TC use, and continuous VN use throughout the day, was common. Satiety using VN was elusive, and consumption quantity was difficult to track. VN had limited desirability and durability as a TC cessation tool among the interviewed PWH.


Asunto(s)
Infecciones por VIH , Cese del Hábito de Fumar , Humanos , Nicotina , Dispositivos para Dejar de Fumar Tabaco/efectos adversos , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/etiología , Estado de Salud , Fumar/efectos adversos , Fumar/epidemiología
7.
PLoS One ; 18(2): e0271666, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36758059

RESUMEN

BACKGROUND: Prisoners generally have a higher prevalence of HIV infection compared to the general population from which they come. Whether this higher prevalence reflects a higher HIV prevalence in those entering prisons or intramural transmission of HIV within prisons or both is unclear. Any of these possibilities would increase the prevalence found in resident prisoners above that in the general population. Moreover, comparisons of HIV prevalence in entrants and residents and in men and women in African prisons are not well documented. The purpose of this study was to estimate and compare the prevalence and risk factors for HIV infection amongst both male as well as female and entrant and resident prisoners in a large Ethiopian Federal Prison. METHODS: We studied consenting prisoners cross-sectionally from August 2014 through November 2016. Prison entrants were screened continuously for HIV infection and its associated risk factors and residents were screened in two waves one year apart. HIV was diagnosed at the prison hospital laboratory based on the Ethiopian national HIV rapid antibody testing protocol. An external, internationally-accredited reference laboratory confirmed results. Agreement of results between the laboratories were assessed. RESULTS: A total of 10,778 participants were screened for HIV. Most participants were young (median age of 26 years, IQR: 21-33), male (84%), single (61%), literate (89%), and urban residents (91%) without prior incarceration (96%). Prevalence of HIV was 3.4% overall. Rates of HIV (p = 0.80) were similar in residents and entrants in wave 1 and in entrants in both waves, but were 1.9-fold higher (5.4% vs 2.8%) in residents than entrants in wave 2 (both p<0.001). At entrance to the prison women were more likely to be HIV+ than men (5.5% in women vs 2.5% in men, p< 0.001). In contrast resident women were less likely to be HIV+, but this difference was not statistically significant (3.2% in women vs 4.3% in men, p = 0.125). Other risk factors associated with HIV infection were increasing age (p<0.001), female gender (p<0.001), marital status (never vs other categories, p = 0.016), smaller number of rooms in their houses pre-imprisonment (p = 0.031), TB diagnosis ever (p<0.001), number of lifetime sex partners (especially having 2-10, p<0.001), and genital ulcer (p = 0.037). CONCLUSIONS: Prevalence of HIV in the residents at this large, central Ethiopian prison was higher than that estimated for the general population and lower than in many other studies from other smaller Ethiopian prisons. A higher prevalence in residents than in entrants were found only in our second wave of screening after one year of continuous screening and treatment, possibly representing increased willingness of residents at increased risk of HIV to participate in the second wave. Thus, this findings did not clearly support intramural transmission of HIV or the effectiveness of screening to reduce prevalence. Finally, the higher HIV prevalence in women than men requires that they be similarly screened and treated for HIV infection.


Asunto(s)
Infecciones por VIH , Prisioneros , Humanos , Masculino , Femenino , Adulto Joven , Adulto , Infecciones por VIH/epidemiología , Infecciones por VIH/etiología , Prisiones , Prevalencia , Factores de Riesgo , VIH
8.
J Int AIDS Soc ; 26(1): e26054, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-36600479

RESUMEN

INTRODUCTION: Sexualized drug use (SDU), the use of psychoactive drugs in the context of sexual intercourse, has been identified as a risk factor for HIV among men who have sex with men (MSM) in Asia. Given the distinct social and cultural context of same-sex relationships and drug-using practice in Asia, we aimed to describe the prevalence of SDU in East and South Asian countries and its associations with condomless anal sex (CAI) and HIV status. Synthesizing SDU research in this region, including SDU definitions, prevalence and outcomes, provides insights to inform future research and improved programme planning, resourcing and advocacy. METHODS: We systematically searched OVID Medline, OVID EMBASE, OVID Global Health, CINAHL, PsycINFO and SCOPUS publication databases for scientific articles published from 1990 to 2022 measuring SDU among MSM in East and South Asian countries. A narrative synthesis was utilized to describe key study attributes and findings, and meta-analyses using random pooled effect models were used to estimate SDU prevalence and its associations with CAI and HIV status. Subgroup meta-analyses, sensitivity analysis and assessment of publication bias examined potential sources of heterogeneity for the pooled SDU prevalence estimates. RESULTS AND DISCUSSION: Of the 1788 publications screened, 49 publications met the selection criteria and 18 were suitable for meta-analyses. Findings highlight SDU definitions distinct from other regions but inconsistencies in the definition of SDU between studies that have been highlighted in research elsewhere. The pooled prevalence of recent SDU (past 12 months) was 13% (95% CI = 10-16%; I2 = 97.6) but higher when studies utilized self-administered surveys (15%; 95% CI = 12-19%; p<0.05). SDU was associated with greater odds of CAI (pooled odds ratio [OR] = 3.21; 95% CI = 1.82-5.66) and living with diagnosed HIV (OR = 4.73; 95% CI = 2.27-8.21). CONCLUSIONS: SDU is common among MSM in East and South Asian countries, but varying SDU definitions limit between-study comparisons. Responses to SDU-related harms should consider local contexts, including specific drug types used and their relative risks.


Asunto(s)
Infecciones por VIH , Minorías Sexuales y de Género , Trastornos Relacionados con Sustancias , Humanos , Masculino , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/epidemiología , Infecciones por VIH/etiología , Homosexualidad Masculina , Prevalencia , Trastornos Relacionados con Sustancias/complicaciones , Sexo Inseguro , Asunción de Riesgos
9.
BMC Womens Health ; 22(1): 456, 2022 11 18.
Artículo en Inglés | MEDLINE | ID: mdl-36401326

RESUMEN

BACKGROUND: Gonadal hormones can modify immune function, which may impact susceptibility to infectious diseases, including Human Immunodeficiency Virus (HIV). There is limited knowledge about how hormonal contraceptives (HC) influence the immune response during the course of use. The CHIME study aims to evaluate the effect of long-acting progestin-based hormonal contraceptives (depot medroxyprogesterone acetate, etonogestrel implant, and levonorgestrel intrauterine device) on immunologic changes in the female genital tract (FGT) and systemic compartment. METHODS: CHIME is an observational cohort study where participants attend 2 visits prior to initiating the HC method of their choice, and then attend 6 visits over 12 months with biological sampling (vaginal swabs, cervicovaginal lavage, cytobrush and blood) for immunological, bacteriological, and virological analyses at each visit. Immune profiling will be evaluated by multi-color flow cytometry to determine how different T-cell subsets, in particular the CD4 T-cell subsets, change during the course of contraceptive use and whether they have different profiles in the FGT compared to the systemic compartment. The study aims are (1) to characterize the alterations in FGT and systemic immune profiles associated with three long-acting progestin-only HC and (2) to evaluate the vaginal microenvironment, determined by 16 s rRNA sequencing, as an individual-level risk factor and moderator of genital and systemic immune profile changes following exposure to three commonly used HC. Data collection started in March 2019 and is scheduled to be completed in October 2024. DISCUSSION: The CHIME study aims to contribute to the body of research designed to evaluate the comparative impact of three long-acting progestin-only HC on innate and adaptive immune functions to understand how immunologic effects alter STI and HIV susceptibility.


Asunto(s)
Anticonceptivos Femeninos , Infecciones por VIH , Femenino , Humanos , Progestinas , Estudios Prospectivos , Genitales Femeninos , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/etiología , Anticoncepción/métodos , Estudios Observacionales como Asunto
10.
PLoS One ; 17(9): e0270545, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36149904

RESUMEN

INTRODUCTION: Voluntary medical male circumcision (VMMC) remains an effective biomedical intervention for HIV prevention in high HIV prevalence countries. In South Africa, United States Agency for International Development VMMC partners provide technical assistance to the Department of Health, at national and provincial levels in support of the establishment of VMMC sites as well as in providing direct VMMC services at site level since April 2012. We describe the outcomes of the Right to Care (RTC) VMMC program implemented in South Africa from 2012 to 2017. METHODS: This retrospective study was undertaken at RTC supported facilities across six provinces. Young males aged ≥10 years who presented at these facilities from 1 July 2012 to 31 September 2017 were included. Outcomes were VMMC uptake, HIV testing uptake and rate of adverse events (AEs). Using a de-identified observational database of these clients, summary statistics of the demographic characteristics and outcomes were calculated. RESULTS: There were a total 1,001,226 attendees of which 998,213 (99.7%) were offered VMMC and had a median age of 15 years (IQR = 12-23 years). Of those offered VMMC, 99.6% (994,293) consented, 96.7% (965,370) were circumcised and the majority (46.3%) were from Gauteng province. HIV testing uptake was 71% with a refusal rate of 15%. Of the newly diagnosed HIV positives, 64% (6,371 / 9,972) referrals were made. The rate of AEs, defined as bleeding, infection, and insufficient skin removal) declined from 3.26% in 2012 to 1.17% in 2017. There was a reduction in infection-related AEs from 2,448 of the 2,602 adverse events (94.08%) in 2012 to 129 of the 2,069 adverse events (6.23%) in 2017. CONCLUSION: There was a high VMMC uptake with a decline in AEs over time. Adolescent men contributed the most to the circumcised population, an indication that the young population accesses medical circumcision more. VMMC programs need to implement innovative demand creation strategies to encourage older males (20-34 years) at higher risk of HIV acquisition to get circumcised for immediate impact in reduction of HIV incidence. HIV prevalence in the total population increased with increasing age, notably in clients above 25 years.


Asunto(s)
Circuncisión Masculina , Infecciones por VIH , Adolescente , Adulto , Niño , Infecciones por VIH/epidemiología , Infecciones por VIH/etiología , Infecciones por VIH/prevención & control , Humanos , Masculino , Estudios Retrospectivos , Sudáfrica/epidemiología , Programas Voluntarios , Adulto Joven
11.
PLoS One ; 17(6): e0269317, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35657948

RESUMEN

INTRODUCTION: South Africa has the highest national burden of HIV globally. Understanding drivers of HIV acquisition in recently completed, prospective studies in which HIV was an endpoint may help inform the strategy and investments in national HIV prevention efforts and guide the design of future HIV prevention trials. We assessed HIV incidence and correlates of incidence among women enrolled in ECHO (Evidence for Contraceptive Options and HIV Outcomes), a large, open-label randomized clinical trial that compared three highly effective. reversible methods of contraception and rates of HIV acquisition. METHODS: During December 2015 to October 2018, ECHO followed sexually active, HIV-seronegative women, aged 16-35 years, seeking contraceptive services and willing to be randomized to one of three contraceptive methods (intramuscular depot medroxyprogesterone acetate, copper intrauterine device, or levonorgestrel implant) for 12-18 months at nine sites in South Africa. HIV incidence based on prospectively observed HIV seroconversion events. Cox proportional hazards regression models were used to define baseline cofactors related to incident HIV infection. RESULTS: 5768 women were enrolled and contributed 7647 woman-years of follow-up. The median age was 23 years and 62.5% were ≤24 years. A total of 345 incident HIV infections occurred, an incidence of 4.51 per 100 woman-years (95%CI 4.05-5.01). Incidence was >3 per 100 woman-years at all sites. Age ≤24 years, baseline infection with sexually transmitted infections, BMI≤30, and having new or multiple partners in the three months prior to enrollment were associated with incident HIV. CONCLUSIONS: HIV incidence was high among South African women seeking contraceptive services. Integration of diagnostic management of sexually transmitted infections alongside delivery of HIV prevention options in health facilities providing contraception services are needed to mitigate ongoing risks of HIV acquisition for this vulnerable population. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, number NCT02550067 was the main Clinical Trial from which this secondary, non-randomized / observational analysis was derived with data limited to just South African sites.


Asunto(s)
Síndrome de Inmunodeficiencia Adquirida , Anticonceptivos Femeninos , Infecciones por VIH , Enfermedades de Transmisión Sexual , Síndrome de Inmunodeficiencia Adquirida/complicaciones , Adulto , Femenino , Infecciones por VIH/epidemiología , Infecciones por VIH/etiología , Infecciones por VIH/prevención & control , Humanos , Incidencia , Estudios Prospectivos , Enfermedades de Transmisión Sexual/complicaciones , Sudáfrica/epidemiología , Adulto Joven
12.
PLoS One ; 17(1): e0262694, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35061803

RESUMEN

To reach its goal of ending AIDS by 2030, Thailand has adopted antiretroviral treatment as prevention and HIV pre-exposure prophylaxis for men who have sex with men (MSM) and transgender women (TGW) as its core HIV control strategy. However, in the absence of reliable epidemiologic indicators, the impact of these policies on the course of the HIV epidemic in these groups remains unknown. To help answer this question, we formulated an HIV epidemic consensus initiative for Bangkok, Thailand, to analyze epidemiologic and program data and reach agreement between experts and stakeholders on the evolving state of the HIV epidemic among MSM and TGW. A customized Delphi process was used to consult and consolidate viewpoints of experts and stakeholders. Experts presented and discussed HIV prevalence and incidence data from recent and ongoing studies among MSM and TGW in Bangkok (2014 to 2018) during a meeting with stakeholders representing government, donors, and civil society. Agreement about the course of the HIV epidemic among MSM and TGW was attained by voting consensus. Based on presented data, meeting participants agreed that HIV prevalence and incidence had decreased among Bangkok MSM from 2014 to 2018. Despite these declines, HIV prevalence and incidence were found to remain high. This was particularly the case among younger MSM. Participants agreed that there was no evidence for a decrease in HIV prevalence and incidence among Bangkok TGW. Introduction of antiretroviral treatment as prevention and HIV pre-exposure prophylaxis may have contributed to these declines. However, HIV prevalence and incidence remained high, and no signs of a decrease were reported among Bangkok TGW. At the current rate of new HIV infections in MSM and TGW, Thailand will not reach its goal of ending AIDS by 2030. This HIV consensus initiative may serve as a model for building agreement and advocacy on epidemiologic and program data and their implications for a large metropolitan city.


Asunto(s)
Infecciones por VIH/epidemiología , Personas Transgénero/estadística & datos numéricos , Adolescente , Adulto , Factores de Edad , Ciudades/epidemiología , Técnica Delphi , Femenino , Infecciones por VIH/etiología , Homosexualidad Masculina , Humanos , Incidencia , Masculino , Prevalencia , Factores de Riesgo , Tailandia/epidemiología , Adulto Joven
13.
Radiother Oncol ; 167: 233-238, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34999135

RESUMEN

BACKGROUND AND PURPOSE: Prognosis after chemoradiotherapy (CRT) for anal squamous cell carcinoma (ASCC) shows marked differences among patients according to TNM subgroups, however individualized risk assessment tools to better stratify patients for treatment (de-) escalation or intensified follow-up are lacking in ASCC. MATERIALS AND METHODS: Patients' data from eight sites of the German Cancer Consortium - Radiation Oncology Group (DKTK-ROG), comprising a total of 605 patients with ASCC, treated with standard definitive CRT with 5-FU/Mitomycin C or Capecitabine/Mitomycin C between 2004-2018, were used to evaluate prognostic factors based on Cox regression models for disease-free survival (DFS). Evaluated variables included age, gender, Karnofsky performance score (KPS), HIV-status, T-category, lymph node status and laboratory parameters. Multivariate cox models were separately constructed for the whole cohort and the subset of patients with early-stage (cT1-2 N0M0) tumors. RESULTS: After a median follow-up of 46 months, 3-year DFS for patients with early-stage ASCC was 84.9%, and 67.1% for patients with locally-advanced disease (HR 2.4, p < 0.001). T-category (HR vs. T1: T2 2.02; T3 2.11; T4 3.03), N-category (HR versus N0: 1.8 for N1-3), age (HR 1.02 per year), and KPS (HR 0.8 per step) were significant predictors for DFS in multivariate analysis in the entire cohort. The model performed with a C-index of 0.68. In cT1-2N0 patients, T-category (HR 2.14), HIV status (HR 2.57), age (1.026 per year), KPS (HR 0.7 per step) and elevated platelets (HR 1.3 per 100/nl) were associated with worse DFS (C-index of 0.7). CONCLUSION: Classical clinicopathologic parameters like T-category, N-category, age and KPS remain to be significant prognostic factors for DFS in patients treated with contemporary CRT for ASCC. HIV and platelets were significantly associated with worse DFS in patients with early stage ASCC.


Asunto(s)
Neoplasias del Ano , Carcinoma de Células Escamosas , Quimioradioterapia , Neoplasias del Ano/terapia , Carcinoma de Células Escamosas/terapia , Infecciones por VIH/tratamiento farmacológico , Infecciones por VIH/etiología , Humanos , Mitomicina , Pronóstico , Estudios Retrospectivos
15.
PLoS Med ; 18(12): e1003875, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34914696

RESUMEN

BACKGROUND: Scaling up shorter regimens for tuberculosis (TB) prevention such as once weekly isoniazid-rifapentine (3HP) taken for 3 months is a key priority for achieving targets set forth in the World Health Organization's (WHO) END TB Strategy. However, there are few data on 3HP patient acceptance and completion in the context of routine HIV care in sub-Saharan Africa. METHODS AND FINDINGS: The 3HP Options Trial is a pragmatic, parallel type 3 effectiveness-implementation randomized trial comparing 3 optimized strategies for delivering 3HP-facilitated directly observed therapy (DOT), facilitated self-administered therapy (SAT), or informed choice between DOT and SAT using a shared decision-making aid-to people receiving care at a large urban HIV clinic in Kampala, Uganda. Participants and healthcare providers were not blinded to arm assignment due to the nature of the 3HP delivery strategies. We conducted an interim analysis of participants who were enrolled and exited the 3HP treatment period between July 13, 2020 and April 30, 2021. The primary outcome, which was aggregated across trial arms for this interim analysis, was the proportion who accepted and completed 3HP (≥11 of 12 doses within 16 weeks of randomization). We used Bayesian inference analysis to estimate the posterior probability that this proportion would exceed 80% under at least 1 of the 3HP delivery strategies, a coprimary hypothesis of the trial. Through April 2021, 684 participants have been enrolled, and 479 (70%) have exited the treatment period. Of these 479 participants, 309 (65%) were women, mean age was 41.9 years (standard deviation (SD): 9.2), and mean time on antiretroviral therapy (ART) was 7.8 years (SD: 4.3). In total, 445 of them (92.9%, 95% confidence interval (CI): [90.2 to 94.9]) accepted and completed 3HP treatment. There were no differences in treatment acceptance and completion by sex, age, or time on ART. Treatment was discontinued due to a documented adverse event (AE) in 8 (1.7%) patients. The probability that treatment acceptance and completion exceeds 80% under at least 1 of the three 3HP delivery strategies was greater than 99%. The main limitations are that the trial was conducted at a single site, and the interim analysis focused on aggregate outcome data to maintain blinding of investigators to arm-specific outcomes. CONCLUSIONS: 3HP was widely accepted by people living with HIV (PLHIV) in Uganda, and very high levels of treatment completion were achieved in a programmatic setting. These findings show that 3HP can enable effective scale-up of tuberculosis preventive therapy (TPT) in high-burden countries, particularly when delivery strategies are tailored to target known barriers to treatment completion. TRIAL REGISTRATION: ClinicalTrials.gov NCT03934931.


Asunto(s)
Antituberculosos/uso terapéutico , Terapia por Observación Directa , Isoniazida/uso terapéutico , Rifampin/análogos & derivados , Tuberculosis/prevención & control , Adulto , Terapia por Observación Directa/clasificación , Quimioterapia Combinada , Femenino , Infecciones por VIH/etiología , Humanos , Masculino , Persona de Mediana Edad , Rifampin/uso terapéutico , Uganda
16.
PLoS One ; 16(12): e0261563, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34972147

RESUMEN

BACKGROUND: In persons living with HIV, mitochondrial disease (MD) is difficult to diagnose, as clinical signs are non-specific with inconsistent patterns. Fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) are mitokines elevated in MD patients without HIV, and associated with cardiometabolic comorbidities in adults living with HIV. We assessed relationships of these biomarkers with MD in children living with perinatally-acquired HIV infection (CPHIV). SETTING: Cross-sectional study of CPHIV from Pediatric ACTG 219/219C classified by Mitochondrial Disease Criteria (MDC) that defines scores 2-4 as "possible" MD. METHODS: Each case with MDC equaling 4 (MDC4; n = 23) was matched to one randomly selected control displaying no MDC (MDC0; n = 23) based on calendar date. Unmatched cases with MDC equaling 3 (MDC3; n = 71) were also assessed. Plasma samples proximal to diagnoses were assayed by ELISA. Mitokine distributions were compared using Wilcoxon tests, Spearman correlations were calculated, and associations with MD status were assessed by conditional logistic regression. RESULTS: Median FGF21 and GDF15 concentrations, respectively, were highest in MDC4 (143.9 and 1441.1 pg/mL), then MDC3 (104.0 and 726.5 pg/mL), and lowest in controls (89.4 and 484.7 pg/mL). Distributions of FGF21 (paired Wilcoxon rank sum p = 0.002) and GDF15 (paired Wilcoxon rank sum p<0.001) differed in MDC4 vs MDC0. Mitokine concentrations were correlated across all participants (r = 0.33; p<0.001). Unadjusted odds ratios of being MDC4 vs MDC0 were 5.2 [95% confidence interval (CI): 1.06-25.92] for FGF21 and 3.5 (95%CI: 1.19-10.25) for GDF15. Relationships persisted after covariate adjustments. CONCLUSION: FGF21 and GDF15 levels may be useful biomarkers to screen for CPHIV with mitochondrial dysfunction.


Asunto(s)
Factores de Crecimiento de Fibroblastos/biosíntesis , Factor 15 de Diferenciación de Crecimiento/biosíntesis , Infecciones por VIH/etiología , Enfermedades Mitocondriales/diagnóstico , Adolescente , Antirretrovirales/efectos adversos , Antirretrovirales/uso terapéutico , Biomarcadores/metabolismo , Niño , Preescolar , Estudios Transversales , Citocinas/metabolismo , Ensayo de Inmunoadsorción Enzimática , Femenino , Factores de Crecimiento de Fibroblastos/genética , Estudios de Seguimiento , Factor 15 de Diferenciación de Crecimiento/genética , Infecciones por VIH/complicaciones , Infecciones por VIH/metabolismo , Humanos , Lactante , Masculino , Mitocondrias/metabolismo , Enfermedades Mitocondriales/complicaciones , Enfermedades Mitocondriales/metabolismo , Análisis de Regresión , Riesgo , Adulto Joven
17.
J Infect Dev Ctries ; 15(7): 989-996, 2021 07 31.
Artículo en Inglés | MEDLINE | ID: mdl-34343124

RESUMEN

INTRODUCTION: Risk factors and outcomes of sexually-acquired human immunodeficiency virus infection were characterized in Jamaican children and adolescents. METHODOLOGY: Management was carried out by multidisciplinary teams in Infectious Diseases clinics during August 2003 through February 2019 using modified World Health Organization HIV criteria. RESULTS: There were 78 clients, aged 6 to 19 years, with females:males = 4:1 (p < 0.05). Sexual-initiation occurred in 60%, 47 before < 16 years (median 13 years, with four < 10 years; females:males = 7:1). Sexual-initiation preceded HIV diagnosis in all cases (median 2 years). Secondary education 93% (69/77) and living with non-parental relatives 17% (13/78) were associated with early sexual-initiation (p < 0.042); as was later imprisonment in 6% (3/52). Other sexually transmitted infections 36% (19/53) were associated with sexual-initiation ≥ 16 years (p < 0.01). Risks for ongoing HIV-transmission included infrequent condom use 74% (39/53), body-piercings 50% (24/48), illicit drug use 37% (28/76), tattoos 36% (19/52), transactional sex 14% (7/53) and pregnancy 56% of girls. 77% (59/77) had Centres for Diseases Control's Category A HIV infection; 82% (61/75) initiated anti-retroviral therapy; 75% (56/75) had first-line drugs, with helper T lymphocyte counts ≥ 500 cells/µL in 61% (48/78) and HIV viral load of < 1,000 copies/µL in 63% (40/64). Complications included dermatological 39% (20/52), respiratory 25% (13/52) and neurological 15% (8/52). Early sexual initiation was associated with depression 43% (33/76; p < 0.004) and suicidal attempt or ideation 23% (18/77; p < 0.096). Four (5%) died. CONCLUSIONS: Sexually transmitted HIV/AIDS in children and adolescents should preempt prompt medical, legal and psychosocial interventions.


Asunto(s)
Infecciones por VIH/epidemiología , Infecciones por VIH/transmisión , Delitos Sexuales/estadística & datos numéricos , Adolescente , Niño , Abuso Sexual Infantil/estadística & datos numéricos , Femenino , Infecciones por VIH/etiología , Humanos , Jamaica/epidemiología , Masculino , Factores de Riesgo , Enfermedades Virales de Transmisión Sexual/epidemiología , Enfermedades Virales de Transmisión Sexual/etiología , Enfermedades Virales de Transmisión Sexual/transmisión , Adulto Joven
18.
Front Immunol ; 12: 716927, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34394123

RESUMEN

Host restriction factors affect different phases of a viral life cycle, contributing to innate immunity as the first line of defense against viruses, including HIV-1. These restriction factors are constitutively expressed, but triggered upon infection by interferons. Both pre-integration and post-integration events of the HIV-1 life cycle appear to play distinct roles in the induction of interferon-stimulated genes (ISGs), many of which encode antiviral restriction factors. However, HIV-1 counteracts the mechanisms mediated by these restriction factors through its encoded components. Here, we review the recent findings of pathways that lead to the induction of ISGs, and the mechanisms employed by the restriction factors such as IFITMs, APOBEC3s, MX2, and ISG15 in preventing HIV-1 replication. We also reflect on the current understanding of the counter-mechanisms employed by HIV-1 to evade innate immune responses and overcome host restriction factors. Overall, this mini-review provides recent insights into the HIV-1-host cross talk bridging the understanding between intracellular immunity and research avenues in the field of therapeutic interventions against HIV-1.


Asunto(s)
Biomarcadores , Regulación de la Expresión Génica , Infecciones por VIH/etiología , VIH-1/inmunología , Interacciones Huésped-Patógeno/genética , Interacciones Huésped-Patógeno/inmunología , Inmunidad Innata , Susceptibilidad a Enfermedades/inmunología , Infecciones por VIH/metabolismo , Humanos , Familia de Multigenes
19.
Front Immunol ; 12: 682094, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34335583

RESUMEN

Peripheral neutrophils in HIV-infected individuals are characterized by impairment of chemotaxis, phagocytosis, bactericidal activity, and oxidative burst ability regardless of whether patients are receiving antiretroviral therapy or not. Neutrophil dysfunction leads not only to increased susceptibility to opportunistic infections but also to tissue damage through the release of reactive oxygen species (ROS), proteases, and other potentially harmful effector molecules contributing to AIDS progression. In this study, we demonstrated high levels of histone H3 lysine K4 trimethylated (H3K4me3) and dysregulation of DNA transcription in circulating neutrophils of HIV-infected subjects. This dysregulation was accompanied by a deficient response of neutrophils to LPS, impaired cytokine/chemokine/growth factor synthesis, and increased apoptosis. Chromatin immunoprecipitation sequencing (ChIPseq) H3K4me3 histone analysis revealed that the most spectacular abnormalities were observed in the exons, introns, and promoter-TSS regions. Bioinformatic analysis of Gene Ontology, including biological processes, molecular function, and cellular components, demonstrated that the main changes were related to the genes responsible for cell activation, cytokine production, adhesive molecule expression, histone remodeling via upregulation of methyltransferase process, and downregulation of NF-κB transcription factor in canonical pathways. Abnormalities within H3K4me3 implicated LPS-mediated NF-κB canonical activation pathway that was a result of low amounts of κB DNA sites within histone H3K4me3, low NF-κB (p65 RelA) and TLR4 mRNA expression, and reduced free NF-κB (p65 RelA) accumulation in the nucleus. Genome-wide survey of H3K4me3 provided evidence that chromatin modifications lead to an impairment within the canonical NF-κB cell activation pathway causing the neutrophil dysfunction observed in HIV-infected individuals.


Asunto(s)
Secuenciación de Inmunoprecipitación de Cromatina , Infecciones por VIH/etiología , Infecciones por VIH/metabolismo , Histonas/metabolismo , Interacciones Huésped-Patógeno , Neutrófilos/inmunología , Neutrófilos/metabolismo , Adulto , Biomarcadores , Biología Computacional/métodos , Susceptibilidad a Enfermedades/inmunología , Femenino , Infecciones por VIH/patología , Interacciones Huésped-Patógeno/genética , Interacciones Huésped-Patógeno/inmunología , Humanos , Recuento de Leucocitos , Masculino , Persona de Mediana Edad , Anotación de Secuencia Molecular , FN-kappa B/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Transducción de Señal , Adulto Joven
20.
Front Immunol ; 12: 710121, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34434194

RESUMEN

Antiretroviral therapy (ART), which is a life-long therapeutic option, remains the only currently effective clinical method to treat HIV-1 infection. However, ART may be toxic to vital organs including the liver, brain, heart, and kidneys, and may result in systemic complications. In this context, to consider HIV-1 restriction factors from the innate immune system to explore novel HIV therapeutics is likely to be a promising investigative strategy. In light of this, P-selectin glycoprotein ligand 1 (PSGL-1) has recently become the object of close scrutiny as a recognized cell adhesion molecule, and has become a major focus of academic study, as researchers believe that PSGL-1 may represent a novel area of interest in the research inquiry into the field of immune checkpoint inhibition. In this article, we review PSGL-1's structure and functions during infection and/or inflammation. We also outline a comprehensive review of its role and potential therapeutic utility during HIV-1 infection as published in contemporary academic literature.


Asunto(s)
Infecciones por VIH/tratamiento farmacológico , VIH-1 , Glicoproteínas de Membrana/fisiología , Infecciones por VIH/etiología , Humanos , Glicoproteínas de Membrana/química
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...