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1.
BMC Public Health ; 24(1): 1151, 2024 Apr 24.
Artículo en Inglés | MEDLINE | ID: mdl-38658900

RESUMEN

INTRODUCTION: Pre-exposure prophylaxis (PrEP) is an HIV prevention strategy that can reduce the risk of HIV acquisition by more than 90% if taken consistently. Although South Africa has been implementing PrEP since 2016, initially for selected population groups before expanding access to more people, there is a dearth of research focused on PrEP among adolescent boys and young men (ABYM), despite them experiencing high rates of HIV infection. To address this gap, we compared PrEP initiation rates by service delivery points (SDPs) among ABYM in KwaZulu-Natal, South Africa. METHODS: We conducted a population-based prospective study in 22 SDPs from July 2021 to July 2022 in KwaZulu-Natal, South Africa. Sexually active ABYM aged 15-35 years who tested HIV negative were recruited at purposively selected PrEP SDPs (i.e., healthcare facilities, secondary schools and Technical Vocational Education and Training (TVET) colleges, and community-based youth zones). We collected baseline quantitative data from each participant using self-administered electronic questionnaires built into REDCap, including demographic information such as age, sex, employment status and level of education, as well as PrEP initiation outcomes. We extracted data from REDCap and exported it to Stata version 17.0 for analysis, and then eliminated discrepancies and removed duplicates. We described baseline characteristics using summary and descriptive statistics (median, interquartile range [IQR] and proportions) and reported PrEP initiation proportions overall and by SDPs. RESULTS: The study included 1104 ABYM, with a median age of 24 years (interquartile range (IQR): 21-28)). Almost all participants were black African (n = 1090, 99%), with more than half aged 15-24 years (n = 603, 55%) and 45% (n = 501) aged 25-35 years. The majority (n = 963; 87%) had attained a secondary level of education. Overall PREP initiation rate among adolescent boys and young men was low: among 1078 participants who were eligible for PrEP, 13% (n = 141) were started on PrEP. Among the participants who were initiated on PrEP, over three quarters (78%, n = 58) were initiated from high schools, compared with community-based youth zones (40%, n = 37), TVET colleges (26%, n = 16) and healthcare facilities (4%, n = 30). CONCLUSIONS: This study provided evidence suggesting that expanding PrEP services to non-traditional settings, such as high schools, TVET colleges, and community-based organizations, may have a potential to increase PrEP access among ABYM in South Africa.


Asunto(s)
Infecciones por VIH , Profilaxis Pre-Exposición , Humanos , Masculino , Adolescente , Sudáfrica , Profilaxis Pre-Exposición/estadística & datos numéricos , Estudios Prospectivos , Adulto Joven , Infecciones por VIH/prevención & control , Adulto
2.
Lancet Reg Health Am ; 33: 100738, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38659491

RESUMEN

Background: PrEP was approved for HIV prevention in the US in 2012; uptake has been slow. We describe relative equity with the PrEP Equity Ratio (PER), a ratio of PrEP-to-Need Ratios (PnRs). Methods: We used commercial pharmacy data to enumerate PrEP users by race and ethnicity, sex, and US Census region from 2012 to 2021. We report annual race and ethnicity-, sex-, and region-specific rates of PrEP use and PnR, a metric of PrEP equity, to assess trends. Findings: PrEP use increased for Black, Hispanic and White Americans from 2012 to 2021. By 2021, the rate of PrEP use per population was similar in Black and White populations but slightly lower among Hispanic populations. PnR increased from 2012 to 2021 for all races and ethnicities and regions; levels of PrEP use were inconsistent across regions and highly inequitable by race, ethnicity, and sex. In all regions, PnR was highest for White and lowest for Black people. Inequity in PrEP use by race and ethnicity, as measured by the PER, grew early after availability of PrEP and persisted at a level substantially below equitable PrEP use. Interpretation: From 2012 to 2021, PrEP use increased among Americans, but PrEP equity for Black and Hispanic Americans decreased. The US South lagged all regions in equitable PrEP use. Improved equity in PrEP use will be not only just, but also impactful on the US HIV epidemic; persons most at-risk of acquiring HIV should have the highest levels of access to PrEP. Prevention programs should be guided by PrEP equity, not PrEP equality. Funding: National Institutes of Health, Gilead Sciences.

3.
Nordisk Alkohol Nark ; 41(2): 212-225, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38645972

RESUMEN

Aim: The aim of the present study was to investigate the expansion and prevalence of anabolic steroid use by examining the divergent effects between health and drug abuse and to create more awareness around the harmful consequences of these drugs when administered at abusive levels. Methods: A focused and concise literature search was conducted, and 101 high-quality articles were included in the review. Results: The findings underscore the adverse health risks of steroid abuse, emphasizing the stark contrast between health and drug abuse. Conclusions: While steroids and other performance-enhancing drugs can yield muscle growth, strength and even fat loss, abusing these substances can lead to adverse health outcomes. Furthermore, within the fitness subculture, particularly in the realm of bodybuilding, steroid abuse fosters an atmosphere of cheating and deception, frequently downplaying or ignoring the negative and sometimes deadly consequences it brings.

4.
Curr Res Microb Sci ; 6: 100234, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38646593

RESUMEN

Two recently published randomized trials of doxycycline post exposure prophylaxis (PEP) have concluded that this intervention is highly effective at reducing the incidence of bacterial sexually transmitted infections (STIs) and has little or no risk of promoting the spread of antimicrobial resistance (AMR). In this perspective piece, we review four types of evidence that suggest that the risk of promoting AMR has been inadequately assessed in these studies. 1) The studies have all used proportion resistant as the outcome measure. This is a less sensitive measure of resistogenicity than MIC distribution. 2) These RCTs have not considered population-level pathways of AMR selection. 3) In populations with very high antimicrobial consumption such as PrEP cohorts, the relationship between antimicrobial consumption and resistance may be saturated. 4) Genetic linkage of AMR means that increased tetracycline use may select for AMR to not only tetracyclines but also other antimicrobials in STIs and other bacterial species. We recommend novel study designs to more adequately assess the AMR-inducing risk of doxycycline PEP.

6.
Int J STD AIDS ; : 9564624241244835, 2024 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-38630433

RESUMEN

BACKGROUND: Methamphetamine is associated with increased HIV risk and suboptimal adherence to pre-exposure prophylaxis (PrEP). Interventions to support PrEP adherence for people who use methamphetamine are needed. METHODS: We evaluated peer navigation to support adherence among people initiating PrEP who use methamphetamine. The HIV Prevention in Methamphetamine Users (HMU!) study enrolled participants from May 2018-January 2022 in Seattle, WA, and followed them for 6 months. Surveys collected sociodemographic, drug use, and sexual behavior data at enrollment, month 3, and month 6. Dried blood spots (DBS) were collected at months 1, 3, and 6 to measure PrEP adherence. RESULTS: We enrolled 21 participants of a target sample of 40, of whom 20 were prescribed PrEP. Nine participants (43%) received peer navigation and 12 (57%) received standard of care or text messaging. At baseline, most participants reported at least weekly methamphetamine use (17, 81%) and condomless receptive anal intercourse (CRAI) (16, 76%). One-third reported CRAI with a partner with HIV. Among those who provided a DBS, 78% and 50% had results commensurate with ≥4 pills/week at the month 3 and 6 visit, respectively. More than half of those prescribed PrEP completed a month 6 visit (11, 55%). Retention was not associated with peer support compared to standard of care or text messaging (p = .20). CONCLUSIONS: We enrolled half our target sample size despite extensive recruitment efforts. As expected, participants had challenges with PrEP adherence and persistence. While peer navigation interventions should be studied further, additional interventions are likely needed to support PrEP uptake, adherence, and persistence among people who use methamphetamine.

7.
Emerg Infect Dis ; 30(13): S68-S74, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38561803

RESUMEN

Preexposure prophylaxis (PrEP) is underused in persons who use drugs and justice-involved persons. In an ongoing randomized controlled trial in 4 US locations comparing patient navigation versus mobile health unit on time to initiation of HIV medication or PrEP for justice-involved persons who use stimulants or opioids and who are at risk for or living with HIV, we assessed HIV risk factors, perceived HIV risk, and interest in PrEP. Participants without HIV (n = 195) were 77% men, 65% White, 23% Black, and 26% Hispanic; 73% reported a recent history of condomless sex, mainly with partners of unknown HIV status. Of 34% (67/195) reporting injection drug use, 43% reported sharing equipment. Despite risk factors, many persons reported their risk for acquiring HIV as low (47%) or no (43%) risk, although 51/93 (55%) with PrEP indications reported interest in PrEP. Justice-involved persons who use drugs underestimated their HIV risk and might benefit from increased PrEP education efforts.


Asunto(s)
Infecciones por VIH , Profilaxis Pre-Exposición , Masculino , Humanos , Femenino , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Factores de Riesgo , Hispánicos o Latinos , Homosexualidad Masculina
8.
AIDS Care ; : 1-9, 2024 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-38574278

RESUMEN

Young MSM (YMSM), aged 15-24, account for nearly half of new HIV infections in Thailand. Pre-exposure prophylaxis (PrEP) is an effective prevention medicine for populations at substantial HIV risk, yet YMSM frequently have suboptimal uptake of and adherence to PrEP. We conducted 35 in-depth interviews with YMSM to explore barriers and facilitators of both PrEP initiation and adherence. Interviews also elicited the perceptions and experiences of healthcare providers (HCPs) working with YMSM at three clinics in Bangkok. Primary barriers to PrEP initiation were limited accessibility, insufficient knowledge, and efficacy concerns; HCPs identified no-to-low self-perception of HIV risk, pre-existing health problems, fears of side effects, and living in distant provinces as barriers to PrEP initiation. YMSM primarily reported PrEP information and self-perceptions of elevated HIV risk as facilitators to PrEP initiation. Additionally, forgetfulness and low HIV risk awareness were common barriers to PrEP adherence. Reminders were a prominent facilitator of PrEP adherence alongside disclosure to close relationships, the routinization of regimens, and convenient facilities. HCPs regarded counseling as the leading facilitator of PrEP adherence. By understanding the barriers/facilitators of PrEP use, the current study seeks to help develop evidence-informed PrEP intervention programs among YMSM while considering cultural sensitivity.

9.
BMC Womens Health ; 24(1): 218, 2024 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-38570779

RESUMEN

BACKGROUND: Daily oral pre-exposure prophylaxis (PrEP) is an effective HIV prevention option for those who are most vulnerable to HIV infection, especially young women (YW). Objection by or lack of support from male sexual partners has been shown to impact YW's ability to take PrEP consistently. We explored the views of YW, and male partners and male peers of YW in Siaya County, Western Kenya, to illustrate how men influence, and can support, YW in using PrEP. METHODS: We used Photovoice to capture the views of YW ages 18-24 who were currently or previously enrolled in the DREAMS program and with current or previous experience taking PrEP. We also captured the views of YW's sexual partners and male peers. The YW completed eight photo assignments that focused on identifying factors influencing their PrEP use, and male participants completed four photo assignments focused on identifying ways men support or hinder YW's PrEP use. Photographs were presented and discussed in same- and mixed-gender groups using the SHOWeD method. YW also participated in in-depth interviews. The analysis focused on identifying themes that described men's influence on YW's PrEP adherence and persistence. RESULTS: Among YW, a restricting male influence on PrEP use emerged in the majority of photo assignments such that YW's photographs and discussions revealed that men were more often viewed as barriers than supporters. YW perceived that they had little autonomy over their sexual lives and choice to use PrEP. YW's PrEP use was perceived to be hindered by stigmatizing community narratives that influenced men's support of PrEP use among women. Male participants suggested that men would support YW's PrEP use if PrEP was better promoted in the community and if men were more knowledgeable about its benefits. CONCLUSIONS: A lack of support from male partners and peers and stigmatizing community narratives influence YW's PrEP use. Community-based programs should include education about PrEP specifically for male partners and peers of YW to positively influence PrEP use among YW.


Asunto(s)
Fármacos Anti-VIH , Infecciones por VIH , Humanos , Masculino , Femenino , Infecciones por VIH/prevención & control , Infecciones por VIH/tratamiento farmacológico , Fármacos Anti-VIH/uso terapéutico , Kenia , Hombres , Conducta Sexual
10.
BMC Infect Dis ; 24(1): 376, 2024 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-38575877

RESUMEN

There is considerable interest in the use of doxycycline post exposure prophylaxis (PEP) to reduce the incidence of bacterial sexually transmitted infections (STIs). An important concern is that this could select for tetracycline resistance in these STIs and other species. We searched PubMed and Google Scholar, (1948-2023) for randomized controlled trials comparing tetracycline PEP with non-tetracycline controls. The primary outcome was antimicrobial resistance (AMR) to tetracyclines in all bacterial species with available data. Our search yielded 140 studies, of which three met the inclusion criteria. Tetracycline PEP was associated with an increasedprevalence of tetracycline resistance in Neisseria gonorrhoeae, but this effect was not statistically significant (Pooled OR 2.3, 95% CI 0.9-3.4). PEP had a marked effect on the N. gonorrhoeae tetracycline MIC distribution in the one study where this was assessed. Prophylactic efficacy was 100% at low MICs and 0% at high MICs. In the one study where this was assessed, PEP resulted in a significant increase in tetracycline resistance in commensal Neisseria species compared to the control group (OR 2.9, 95% CI 1.5-5.5) but no significant effect on the prevalence of tetracycline resistance in Staphylococcus aureus. The available evidence suggests that PEP with tetracyclines could be associated with selecting tetracycline resistance in N. gonorrhoeae and commensal Neisseria species.


Asunto(s)
Gonorrea , Enfermedades de Transmisión Sexual , Humanos , Tetraciclina/farmacología , Tetraciclina/uso terapéutico , Resistencia a la Tetraciclina , Profilaxis Posexposición , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Neisseria gonorrhoeae , Pruebas de Sensibilidad Microbiana , Tetraciclinas/farmacología , Tetraciclinas/uso terapéutico , Mitomicina/uso terapéutico , Gonorrea/tratamiento farmacológico , Gonorrea/epidemiología , Gonorrea/prevención & control
12.
Acad Pediatr ; 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38631476

RESUMEN

PURPOSE: Oral pre-exposure prophylaxis (PrEP) is effective in preventing HIV transmission. However, oral PrEP uptake is low, particularly among sexual and gender minority youth who are vulnerable to HIV infection. Alternative methods of PrEP delivery, such as long-acting injectable (LAI) PrEP may overcome barriers and be preferred. However, attitudes and preferences of younger sexual and gender minorities towards LAI PrEP have not been well studied. The purpose of this study is to describe preferences for initiating LAI PrEP among sexual and gender minority youth. METHODS: We analyzed data collected as part of an HIV prevention randomized trial from January 2022 to February 2023, using multiple regression to identify factors associated with a preference for LAI PrEP. RESULTS: The study sample (N=265) was 50% youth of color, mean age 25 years (SD=3.4, range=18-31), and primarily identified as gay (71%) and male (91%). 42% had heard of LAI PrEP and 31% preferred LAI PrEP over other prevention methods. In multiple regression analysis, LAI PrEP preference was associated with identifying as White, previous PrEP experience, and perceived LAI PrEP efficacy. DISCUSSION: We conclude that gaps in awareness exist for LAI PrEP, however it may be preferred over other prevention methods especially in White youth, those with PrEP experience and higher perceptions of its efficacy. More education and outreach are needed to prevent extension of existing race/ethnicity disparities in use of oral daily PrEP to LAI PrEP. WHAT'S NEW: Findings from this study suggest that awareness of LAI PrEP is low, however it may be preferred over other prevention methods especially in White youth, those with PrEP experience and higher perceptions of its efficacy.

13.
MSMR ; 31(3): 13-16, 2024 Mar 20.
Artículo en Inglés | MEDLINE | ID: mdl-38621257

RESUMEN

Estimates of HIV pre-exposure prophylaxis (PrEP) coverage in the U.S. military, defined as the proportion of the persons taking HIV PrEP out of the estimated number of persons who had indications for it, have never been published. The objective of this study was to provide an estimate of HIV PrEP coverage comparable to U.S. civilian estimates. The population with indications for HIV PrEP was obtained from the Department of Defense 2018 Health Related Behaviors Survey, a stratified random sample of members of all military service branches. The military PrEP coverage estimate of 31.6% in 2023 was lower than the national U.S. estimate of 36.0% in 2022. Among the military population of men who have sex with men (MSM), an estimated 24.6% of service members had indications for PrEP, similar to the national estimate of 24.7%. MSM comprised 66% of all military service members with HIV PrEP indications, compared to 40% in the U.S. general population. The U.S. military should continue deliberate, sustained, and effective actions to address sexual health inequities among MSM, aligned and coordinated with societal efforts including improved coverage of HIV PrEP to prevent HIV transmission.


Asunto(s)
Infecciones por VIH , Personal Militar , Profilaxis Pre-Exposición , Minorías Sexuales y de Género , Masculino , Humanos , Homosexualidad Masculina , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control
14.
BMC Public Health ; 24(1): 1009, 2024 Apr 11.
Artículo en Inglés | MEDLINE | ID: mdl-38605341

RESUMEN

INTRODUCTION: Few studies focused on the Pre-Exposure Prophylaxis (PrEP) -related aspects, and the applicability of prior evidence to young men who have sex with men (YMSM) students was unknown. This study aimed to assess the awareness, willingness, uptake, and adherence (AWUA) to PrEP among YMSM students in China and to explore the associated factors with these stages. METHODS: A cross-sectional survey with a sizable sample of 1151 was conducted among YMSM students aged 16 and above, who self-identified as men who have sex with men(MSM) and resided in mainland China between October 20 and December 20, 2021. The chi-square test and Fisher's exact test were used for univariate analysis, followed by multivariable logistic regression analysis of influencing factors at all levels. RESULTS: According to the cascade analysis approach, 88.71% of the participants were aware of PrEP, among which 66.7% expressed willingness to use it. Among those who were willing to use PrEP, only 13.80% took it, and of those who took it, 44.68% adhered to it. The students taking PrEP were those with higher education (OR = 4.239, 95% CI: 1.334-13.467), residence in pilot cities (OR = 2.791, 95% CI: 1.498-5.198), residence in high-risk areas (OR = 5.082, 95% CI: 2.224-11.612), engagement in multi-person sexual behavior (OR = 2.186, 95% CI: 1.236-3.867), and substance use (OR = 1.908, 95% CI: 1.167-3.118). Furtherly, students with higher adherence to PrEP were likely to have receptive sexual behaviors (OR = 8.702, 95% CI: 2.070-36.592), absence of substance use (OR = 4.468, 95% CI: 1.371-14.561), and uptake of PrEP through daily oral route. (OR = 7.065, 95% CI: 1.699-29.371). CONCLUSION: YMSM students exhibit distinct patterns of "high awareness, low willingness, low uptake, and low adherence" to PrEP. Strategies for reduction in the acquisition of HIV prioritizing the current features of utilizing PrEP were urgently warranted.


Asunto(s)
Infecciones por VIH , Profilaxis Pre-Exposición , Minorías Sexuales y de Género , Trastornos Relacionados con Sustancias , Masculino , Humanos , Homosexualidad Masculina , Estudios Transversales , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , China/epidemiología
15.
AIDS Care ; : 1-13, 2024 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-38648528

RESUMEN

Men who have sex with men (MSM) are disproportionately affected by HIV. Given that over 70% of MSM meet sexual partners via dating apps, such apps may be an effective platform for promoting HIV pre-exposure prophylaxis (PrEP) use. We aimed to describe preferences among MSM for PrEP advertisements displayed on dating apps. We conducted individual in-depth interviews with 16 MSM recruited from a mobile sexual health unit in Boston, Massachusetts. Two focus groups were also held: one with mobile unit staff (N = 3) and one with mobile unit users (N = 3). Content analysis was used to identify themes related to advertisement content and integration with app use. Mean participant age was 28 (SD 6.8); 37% identified as White and 63% as Latinx. 21% of interviews were conducted in Spanish. Preferences were organized around four themes: (1) relevant and relatable advertisements, (2) expansion of target audiences to promote access, (3) concise and captivating advertisements, and (4) PrEP advertisements and services as options, not obligations. MSM are supportive of receiving information about PrEP on dating apps, but feel that existing advertisements require modification to better engage viewers. Dating apps may be an underutilized tool for increasing PrEP awareness and knowledge among MSM.

16.
medRxiv ; 2024 Mar 30.
Artículo en Inglés | MEDLINE | ID: mdl-38585794

RESUMEN

Background: There are limited population-level data on the pre-exposure prophylaxis (PrEP) care continuum in eastern Africa. Here, we assessed the PrEP care continuum following PrEP rollout in a Ugandan community with ~40% HIV seroprevalence. Methods: We used cross-sectional population-based data collected between September 3 and December 19, 2018 from a Lake Victoria fishing community in southern Uganda to measure levels of self-reported PrEP knowledge, ever use, and discontinuation following 2017 PrEP rollout via a U.S. President's Emergency Plan for AIDS Relief (PEPFAR)-supported phased implementation program. Our analysis included HIV-seronegative persons reporting having ever received an HIV test result. We examined associations between demographic, behavioral, and health utilization factors with each outcome using age-adjusted modified Poisson regression. Results: There were 1,401 HIV-seronegative participants, of whom 1,363 (97.3%) reported ever receiving an HIV test result. Median age was 29 years (IQR: 23-36), and 42.3% (n=577) were women. Most (85.5%; n=1,166) participants reported PrEP knowledge, but few (14.5%; n=197) reported ever using PrEP. Among 375 (47.7%) men and 169 (29.3%) women PrEP-eligible at time of survey, 18.9% (n=71) and 27.8% (n=47) reported ever using PrEP, respectively. Over half (52.3%, n=103) of those who had ever used PrEP, self-reported current use. Conclusion: In this Lake Victoria fishing community, there were low levels of PrEP use despite high levels of PrEP awareness and eligibility, particularly among men. Efforts that enhance awareness of HIV risk and increase PrEP accessibility may help increase PrEP use among HIV-seronegative persons in African settings with high HIV burden.

17.
medRxiv ; 2024 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-38585951

RESUMEN

Antiretroviral therapy (ART) is not a cure. Upon ART cessation, virus rapidly rebounds from latently-infected cells ("the HIV reservoir"). The reservoir is largely stabilized at the time of ART initiation and then decays slowly. Here, leveraging >500 longitudinal samples from 67 people with HIV (PWH) treated during acute infection, we developed a novel mathematical model to predict reservoir decay using the intact proviral DNA assay (IPDA) from peripheral CD4+ T cells. Nonlinear generalized additive models adjusted for initial CD4+ T count, pre-ART viral load, and timing of ART initiation demonstrated rapid biphasic decay of intact DNA (week 0-5: t1/2 ~0.71 months; week 5-24: t1/2 ~3.9 months) that extended out to 1 year of ART, with similar trends for defective DNA. Predicted reservoir decay were faster for participants individuals with earlier timing of ART initiation, higher initial CD4+ T cell count, and lower pre-ART viral load. These estimates are ~5-fold faster than prior reservoir decay estimates among chronic-treated PWH. Thus, these data add to our limited understanding of host viral control at the earliest stages of HIV reservoir stabilization, potentially informing future HIV cure efforts aimed at diverse, global population of PWH initiating ART at varying stages of disease.

18.
Front Reprod Health ; 6: 1369762, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38596665

RESUMEN

Short- and long-term impacts of the climate crisis continue to be felt across the public health landscape. Many individuals marginalized by the climate crisis also navigate a higher likelihood of exposure to HIV. By understanding this relationship, we can better position HIV prevention, and pre-exposure prophylaxis (PrEP) programs specifically, to meet user needs in communities experiencing the effects of the climate crisis. In support, we propose four recommendations for mitigating the impact of the climate crisis on those who may benefit from PrEP: (1) leverage existing and emerging research and lived experience to intentionally target and appropriately reach individuals affected by the climate crisis who may need or want PrEP; (2) emphasize the need for more climate-resilient PrEP products within the research and development pipeline; (3) build a continued understanding of the role of the climate crisis-HIV relationship in product introduction through national collaboration; and (4) strengthen the integration of PrEP service delivery and response to intimate partner violence. The PrEP market is set for rapid expansion with the introduction of new prevention methods to enable choice. To be comprehensively responsive to potential PrEP users, we must consider and address how the climate crisis changes not only the environmental landscape, but the prevention ecosystem.

19.
Prep Biochem Biotechnol ; : 1-11, 2024 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-38592940

RESUMEN

We established an efficient method using high-speed countercurrent chromatography (HSCCC) combined with preparative high-performance liquid chromatography (prep-HPLC) for isolating and purifying Gelsemium elegans (G. elegans) alkaloids. First, the two-phase solvent system composed of 1% triethylamine aqueous solution/n-hexane/ethyl acetate/ethanol (volume ratio 4:2:3:2) was employed to separate the crude extract (350 mg) using HSCCC. Subsequently, the mixture that resulted from HSCCC was further separated by Prep-HPLC, resulting in seven pure compounds including: 14-hydroxygelsenicine (1, 12.1 mg), sempervirine (2, 20.8 mg), 19-(R)-hydroxydihydrogelelsevirine (3, 10.1 mg), koumine (4, 50.5 mg), gelsemine (5, 32.2 mg), gelselvirine (6, 50.5 mg), and 11-hydroxyhumanmantenine (7, 12.5 mg). The purity of these seven compounds were 97.4, 98.9, 98.5, 99, 99.5, 96.8, and 85.5%, as determined by HPLC. The chemical structures of the seven compounds were analyzed and confirmed by electrospray ionization mass spectrometry (ESI-MS), 1H-nuclear magnetic resonance (1H NMR), and 13 C-nuclear magnetic resonance (13 C NMR) spectra. The results indicate that the HSCCC-prep-HPLC method can effectively separate the major alkaloids from the purified G. elegans, holding promising prospects for potential applications in the separation and identification of other traditional Chinese medicines.

20.
Soc Sci Med ; 348: 116842, 2024 Mar 31.
Artículo en Inglés | MEDLINE | ID: mdl-38593613

RESUMEN

Transmasculine people (TM) constitute an invisibilized group within the transgender population. Little is known about their relationship to sexuality in transgender medicine. Their presence and needs are still unacknowledged within HIV prevention research and services. Pre-exposure prophylaxis (or PrEP) is an oral medication that prevents HIV in HIV-negative individuals at risk of infection with the virus. This paper proposes to bring TM back into the focus of PrEP research by questioning how they navigate and situate themselves in relation to existing PrEP categorization and services, and how they think about and (re)shape the meanings of PrEP. It is based on the "interpretative descriptive" method and a transfeminist theoretical framework applied to the analysis of ten semi-structured interviews with TM conducted in France between 2019 and 2023. Findings show that PrEP is gendered. We identify specific barriers to getting PrEP as well as to access healthcare and we show that a cisnormative and homonormative approach to prevention generates them. PrEP use and PrEP disclosure are embedded in structural and symbolic power relations between cisgender and transgender MSM that are reflected in the intimate sphere. TM use PrEP to prevent sexual assault and to alleviate the difficulty of condom negotiation. PrEP comes into play following major changes in TM's sexualities and is integrated post-exposure.

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