Characteristics of Received HIV Prevention Advocacy from Persons Living with HIV in Uganda, and Associations with HIV Testing and Condom Use Among Social Network Members.

Receiving peer advocacy has been shown to result in increased HIV protective behaviors, but little research has gone beyond assessment of the mere presence of advocacy to examine aspects of advocacy driving these effects. With baseline data from a controlled trial of an advocacy training intervention, we studied characteristics of HIV prevention advocacy received among 599 social network members of persons living with HIV in Uganda and the association of these characteristics with the social network members' recent HIV testing (past six months) and consistent condom use, as well as perceived influence of advocacy on these behaviors. Participants reported on receipt of advocacy specific to HIV testing and condom use, as well as on measures of advocacy content, tone of delivery, support for autonomous regulation, and perceived influence on behavior. Receiving HIV testing advocacy and condom use advocacy were associated with recent HIV testing [65.2% vs. 51.4%; OR (95% CI) = 1.77 (1.11-2.84)], and consistent condom use with main sex partner [19.3% vs. 10.0%; OR (95% CI) = 2.16 (1.12-4.13)], respectively, compared to not receiving advocacy. Among those who received condom advocacy, perceived influence of the advocacy was positively correlated with consistent condom use, regardless of type of sex partner; support of autonomous regulation was a correlate of consistent condom use with casual sex partners, while judgmental advocacy was a correlate of consistent condom use with serodiscordant main partners. Among those who received testing advocacy, HIV testing in the past 6 months was positively correlated with receipt of direct support for getting tested. In multiple regression analysis, perceived influence of both HIV testing and condom use advocacy were positively correlated with advocacy that included access information and support of autonomous regulation; confrontational advocacy and judgmental advocacy were independent positive correlates of perceived influence of testing and condom use advocacy, respectively. These findings support associations that suggest potential benefits of peer advocacy from PLWH on HIV testing and condom use among their social network members, and indicate that advocacy content, tone of delivery, and support of autonomous regulation advocacy may play an important role in the success of advocacy.

Substance Use and Mental Health as Mediators of the Association Between Intimate Partner Violence Victimization and Condomless Sex with Serodiscordant Partners Among Black Sexual Minority Men Living with HIV.

Black sexual minority men (SMM) are disproportionately impacted by HIV in the United States. Intimate partner violence (IPV), substance use, and depression are associated with HIV risk behavior such as condomless sex. In this study, we assessed cross-sectional associations between multiple types of IPV victimization and condomless sex with serodiscordant partners. We then evaluated the mediating roles of mental health and substance use, in a sample of 213 Black SMM living with HIV. We used validated scales to assess IPV victimization, depression, post-traumatic stress symptoms, general mental health, and substance use. All independent variables (IPV type) that had at least a marginal (p < .10) association with the dependent variable (condomless sex with a serodiscordant partner) and any potential mediator were included in mediation models. Mediator role was determined based on a statistically significant outcome (p < .05) in the mediation model. Physical assault, injury-inducing IPV, and sexual coercion were each positively correlated with condomless sex. Depression, overall mental health, and substance use were associated with physical assault and injury-inducing IPV, and depression was associated with sexual coercion IPV. Both physical assault and injury-inducing IPV were associated with overall mental health, but none of the mental health and substance use measures mediated the associations between IPV and condomless sex. Findings suggest that HIV prevention efforts for Black SMM may need to incorporate IPV screening and prevention services. Further research is needed to understand the psychosocial pathways by which physical forms of IPV relate to condom use.

Correlated order at the tipping point in the kagome metal CsV3Sb5.

Spontaneously broken symmetries are at the heart of many phenomena of quantum matter and physics more generally. However, determining the exact symmetries that are broken can be challenging due to imperfections such as strain, in particular when multiple electronic orders are competing. This is exemplified by charge order in some kagome systems, where evidence of nematicity and flux order from orbital currents remains inconclusive due to contradictory measurements. Here we clarify this controversy by fabricating highly symmetric samples of a member of this family, CsV3Sb5, and measuring their transport properties. We find that a measurable anisotropy is absent at any temperature in the unperturbed material. However, a pronounced in-plane transport anisotropy appears when either weak magnetic fields or strains are present. A symmetry analysis indicates that a perpendicular magnetic field can indeed lead to in-plane anisotropy by inducing a flux order coexisting with more conventional bond order. Our results provide a unifying picture for the controversial charge order in kagome metals and highlight the need for materials control at the microscopic scale in the identification of broken symmetries.

How Intimate Partner Violence Is Influenced by Social Identity Among Sexual Minority Men.

Purpose: Sexual minority men (SMM) experience intimate partner violence (IPV) at disproportionately high rates. The objective of this article was to identify the experiences of SMM and health care providers on how social identity impacts IPV. Methods: SMM participants (N = 23) were recruited from online community settings and a lesbian, gay, bisexual, transgender, queer, and others (LGBTQ+) organization in Los Angeles; providers (N = 10) were recruited from LGBTQ+ organizations. Semistructured interviews were audio recorded and transcribed verbatim. An applied thematic analysis approach was implemented to create memos, inductively generate a codebook, apply codes to the transcripts, and identify key themes in data. Results: Three main themes were identified. The first theme was weaponizing social identity to control a partner, which had three subthemes: (1) immigration status, race/ethnicity, and skin color, (2) threatening to "out" the partner's sexual orientation, and (3) abusing power inequity. Men who perpetrated IPV often used minority identities or undisclosed sexuality to leverage power over their partner. The second theme was use of IPV to establish masculinity, by exerting power over the more "feminine" partner. The third theme was internalized homophobia as a root cause of IPV, which details how internalized homophobia was often expressed in violent outbursts toward partners. Conclusion: These findings highlight how IPV among SMM can be influenced by social and sexual identity. Future research must consider socially constructed power structures and the multiple identities of SMM when developing interventions to address IPV in this population.

Correlates of HIV Prevention Advocacy by Persons Living with HIV in Kampala, Uganda: A Cross-sectional Evaluation of a Conceptual Model.

BACKGROUND: HIV prevention advocacy empowers persons living with HIV (PLWH) to act as advocates and encourage members of their social networks to engage in protective behaviors such as HIV testing, condom use, and antiretroviral therapy (ART) adherence. We examined correlates of HIV prevention advocacy among PLWH in Uganda. METHOD: A cross-sectional analysis was conducted with baseline data from 210 PLWH (70% female; mean age = 40 years) who enrolled in a trial of an HIV prevention advocacy training program in Kampala, Uganda. The baseline survey, which was completed prior to receipt of the intervention, included multiple measures of HIV prevention advocacy (general and specific to named social network members), as well as internalized HIV stigma, HIV disclosure, HIV knowledge, positive living (condom use; ART adherence), and self-efficacy for HIV prevention advocacy. RESULTS: Consistent with our hypotheses, HIV disclosure, HIV knowledge, consistent condom use, and HIV prevention advocacy self-efficacy were all positively correlated with at least one measure of HIV prevention advocacy, after controlling for the other constructs in multiple regression analysis. Internalized HIV stigma was positively correlated with advocacy in bivariate analysis only. CONCLUSION: These findings identify which characteristics of PLWH are associated with acting as change agents for others in their social network to engage in HIV protective behaviors.

Culturally Relevant Africultural Coping Moderates the Association Between Discrimination and Antiretroviral Adherence Among Sexual Minority Black Americans Living with HIV.

Exposure to discrimination has been linked to lower HIV antiretroviral therapy (ART) adherence and poor HIV care outcomes among Black Americans. Coping has been shown to mitigate the harmful effects of discrimination on health behaviors, but the use of cultural relevant Africultural coping strategies is understudied as a moderator of the association between intersectional discrimination and ART adherence among Black Americans. We used adjusted logistic regression to test whether Africultural coping strategies (cognitive/emotional debriefing; collective; spiritual-centered; ritual-centered) moderated associations between multiple forms of discrimination (HIV, sexual orientation, race) and good ART adherence (minimum of 75% or 85% of prescribed doses taken, as measured by electronic monitoring in separate analyses) among 92 sexual minority Black Americans living with HIV. Mean adherence was 66.5% in month 8 after baseline (36% ≥ 85% adherence; 49% ≥ 75% adherence). Ritual-centered coping moderated the relationship between each of the three types of discrimination at baseline and good ART adherence in month 8 (regardless of the minimum threshold for good adherence); when use of ritual coping was low, the association between discrimination and adherence was statistically significant. The other three coping scales each moderated the association between racial discrimination and good ART adherence (defined by the 75% threshold); cognitive/emotional debriefing was also a moderator for both HIV- and race-related discrimination at the 85% adherence threshold. These findings support the benefits of Africultural coping, particularly ritual-centered coping, to help sexual minority Black Americans manage stressors associated with discrimination and to adhere well to ART.

Intimate Partner Violence and the Sexual Health of Sexual Minority Men.

Purpose: This qualitative study explores the pathways by which various forms of intimate partner violence (IPV) impact the sexual health behaviors of cisgender identified sexual minority men (SMM). Methods: Semi-structured interviews were conducted with 23 racially and ethnically diverse SMM who recently experienced IPV and 10 clinical and social service providers focused on how experiences of IPV directly or indirectly influences sexual risk as well as engagement in HIV prevention behaviors (e.g., pre-exposure prophylaxis [PrEP] use). Applied thematic analysis, including cycles of analytic memo writing and coding, aided the identification of patterns across the data. Results: Analyses yielded three overarching themes: use of condoms, use of PrEP, and HIV and sexually transmitted infections (STIs). Participants described different ways condom use or nonuse was a mechanism by which power and/or control might be asserted by one partner over the other partner. A range of responses to questions about PrEP were identified, including partners encouraging PrEP use, as well as avoidance of conversations about PrEP or actual PrEP use, to prevent experiencing aggression or IPV from partners. Responses regarding HIV/STIs included those ranging from a new diagnosis being a potential trigger for violence to the exploitation of status to control partners. Conclusion: These findings suggest that in relationships with IPV, HIV prevention strategies can be sources of relationship control and trigger abuse. Addressing IPV may help to prevent HIV/STI transmission and promote the health of SMM. In addition, long-acting formulations of PrEP may be a promising strategy for SMM experiencing IPV when oral PrEP medications may be a risk factor for violence.

Knowledge Mediates the Effects of Game Changers for Cervical Cancer Prevention (GC-CCP) Intervention on Increased VIA Screening Advocacy in Uganda.

Game Changers for Cervical Cancer Prevention (GC-CCP), a group advocacy training intervention, has been shown to increase cervical cancer prevention and screening advocacy. In this secondary analysis, we examined mediators and moderators of this effect. A randomized controlled trial of GC-CCP-a 7-session, peer led intervention designed to empower women to engage in cervical cancer prevention advocacy-was conducted with women who had recently been screened by visual inspection of the cervix with acetic acid for cervical cancer. Participants were assessed at baseline and month 6 follow-up. Cervical cancer-related constructs targeted by the intervention were examined as mediators using multivariate linear regression analysis. Individual and social network characteristics were examined as moderators. Change in cervical cancer knowledge fully mediated the intervention effect on increased cervical cancer prevention advocacy; change in cervical cancer risk management self-efficacy was a partial mediator. Moderators of the effect included no secondary education, having a main sex partner, and having trustworthy, supportive, non-stigmatizing peers. The effect of GC-CCP on cervical cancer prevention advocacy seems largely driven by its impact on cervical cancer knowledge, and the intervention may be most effective among women who are partnered, less educated, and have trusting, supportive social networks. PREVENTION RELEVANCE: Enhancing cervical cancer knowledge among women who have screened for cervical cancer is key to empowering these women to engage in cervical cancer prevention advocacy and acting as change agents for encouraging other women to screen.

Effects of a peer advocacy intervention on cervical cancer screening among social network members: results of a randomized controlled trial in Uganda.

Cervical cancer (CC) is the most common cancer among women in Uganda, yet lifetime CC screening is as low as 5%. Training women who have screened for CC to engage in peer advocacy could increase uptake of CC screening in social networks. We conducted a randomized controlled trial of a peer-facilitated, manualized, 7-session group intervention to train women to engage in CC prevention advocacy. Forty women recently screened for CC (index participants) enrolled and were assigned to receive the intervention (n = 20) or wait-list control (n = 20). Each index was asked to recruit up to three female social network members (alters) who had not been screened for CC (n = 103 enrolled alters). All index and alter participants were assessed at baseline and month-6 follow-up. All but one (n = 39; 98%) index and 98 (95%) alter participants completed the month 6 assessment. In multivariate regression models controlling for baseline outcome measures and demographic covariates, intervention alters were more likely to have been screened for CC at month 6 [67% vs. 16%; adjusted OR (95% CI) = 12.13 (4.07, 36.16)], compared to control alters. Data also revealed significant increased engagement in CC prevention advocacy, among both index and alter participants in the intervention group at month 6, compared to the control group. The intervention was highly effective in increasing CC screening uptake among social network members, and engagement in CC prevention advocacy among not only intervention recipients, but also targets of advocacy, suggesting the potential for wide dissemination of CC knowledge.Trial Registration. NIH Clinical Trial Registry NCT04960748 ( clinicaltrials.gov ).

Increased Knowledge Mediates the Effect of Game Changers for Cervical Cancer Prevention on Diffusion of Cervical Cancer Screening Advocacy Among Social Network Members in a Pilot Trial.

BACKGROUND: Game Changers for Cervical Cancer Prevention (GC-CCP), a peer-led, group advocacy training intervention, increased cervical cancer (CC) prevention advocacy not only among intervention recipients, but also their social network members (referred to as "alters") who were targeted with advocacy in a pilot randomized controlled trial. We examined mediators and moderators of this effect on alter advocacy, to understand how and for whom the intervention had such an effect. METHOD: Forty women (index participants) who had recently screened for CC enrolled and were randomly assigned to receive the GC-CCP intervention (n = 20) or the wait-list control (n = 20). Up to three alters from each participant (n = 103) were surveyed at baseline and month 6. Measures of CC-related cognitive constructs (knowledge, enacted stigma, and risk management self-efficacy), as well as extent of advocacy received from index participants, were assessed as mediators of the intervention effect on alter advocacy using multivariate regression analyses. Alter characteristics were examined as moderators. RESULTS: Increased CC-related knowledge partially mediated the intervention effect on increased alter engagement in CC prevention advocacy; those with greater gains in knowledge reported greater engagement in advocacy. No moderators of the intervention effect were identified. CONCLUSION: The effect of GC-CCP on alter CC prevention advocacy is enhanced by increased alter knowledge pertaining to CC prevention, causes, and treatment and suggests this may be key for diffusion of intervention effects on increased CC prevention advocacy throughout a social network. TRIAL REGISTRATION: NCT04960748 (registered on clinicaltrials.gov , 7/14/2021).

Correlates of cervical cancer prevention advocacy and cervical cancer screening in Uganda: Cross-sectional evaluation of a conceptual model.

An approach to increasing cervical cancer (CC) screening is to empower women who have been screened to act as advocates and encourage other women they know to get screened. We examined correlates of CC screening advocacy and CC screening uptake among constructs in our conceptual model of factors driving engagement in advocacy. A cross-sectional, correlational analysis was conducted with survey data from 40 women (index participants) who had recently screened for CC, and 103 female members of their social network (alter participants) who had not been screened. Variables measured included CC prevention advocacy, as well as internalized CC stigma, sharing of CC screening result, CC knowledge, healthy bodily intake (i.e., diet; alcohol and cigarette use) and self-efficacy related to CC service utilization and CC prevention advocacy, which were hypothesized to be associated with advocacy. Bivariate and multivariable regression analyses, controlling for clustering, were conducted. Among index participants, greater engagement in advocacy was positively correlated with CC knowledge, sharing of CC screening result, and CC service utilization self-efficacy. Women who had screened positive and received treatment for precancerous lesions reported greater CC prevention advocacy, CC knowledge and healthy living, compared to those who screened negative. In multiple regression analyses, CC screening was positively associated with CC prevention advocacy and being age 36 or older, and CC prevention advocacy was also positively associated with CC service utilization self-efficacy. These findings support the validity of our conceptual model regarding factors associated with engagement in CC prevention advocacy among women screened for CC. The strong association between CC prevention advocacy and both CC screening uptake and CC service utilization self-efficacy suggests the potential value of advocacy promotion among women who have been screened, as well as for increasing screening uptake.

Piloting Gain and Loss-Framed PrEP and Childbearing Messaging to Promote HIV Testing in Uganda: Perspectives from Couples and Providers.

Fears of relationship dissolution and the inability to bear healthy children remain barriers to HIV testing in sub-Saharan Africa. Pre-exposure prophylaxis (PrEP) carries both clinical and symbolic benefits that counter these fears. We conducted a pilot messaging intervention through Uganda's assisted partner notification (APN) program, where providers assist HIV-positive index clients in notifying sexual partners and encourage testing. We randomized providers at three clinics to implement phone scripts over two months with (1) gain-framed or (2) loss-framed information about PrEP and childbearing; or (3) usual care. In 23 in-depth interviews with providers, index clients, and partners, five major themes emerged on intervention acceptability and feasibility: (1) value of PrEP and childbearing messaging in APN; (2) value of this messaging coming earlier in APN; (3) overall preference for gain-framed messages; (4) need to tailor timing of messaging; and (5) need for messaging outside of APN. Register data (109 index clients, 145 partners) indicated most index clients (95%) wanted their potential conception partners informed about PrEP. Preliminary trends suggest the intervention sites outperformed usual care in testing rates among potential conception partners. Messaging that highlights PrEP and safe childbearing may be a promising new communication strategy to promote HIV testing.

Loneliness Among Black/African American Adults Living with HIV: Sociodemographic and Psychosocial Correlates and Implications for Adherence.

Loneliness, an emerging public health problem, is higher among people living with HIV and is associated with negative health outcomes. Black/African Americans have a high burden of HIV, and little is known about the characteristics of loneliness among Black adults living with HIV; therefore, this study sought to understand the sociodemographic and psychosocial correlates of Black adults living with HIV who are lonely and the implications of loneliness for their health outcomes. A sample of 304 Black adults living with HIV (73.8% sexual minority men) in Los Angeles County, CA, USA, completed the survey items assessing sociodemographic and psychosocial characteristics, social determinants of health, health outcomes, and loneliness. Antiretroviral therapy (ART) adherence was assessed electronically with the medication event monitoring system. Bivariate linear regressions analysis showed higher loneliness scores among those with higher levels of internalized HIV stigma, depression, unmet needs, and discrimination related to HIV serostatus, race, and sexual orientation. In addition, participants who were married or living with a partner, had stable housing, and reported receiving more social support had lower levels of loneliness. In multivariable regression models controlling for correlates of loneliness, loneliness was found to be a significant independent predictor of worse general physical health, worse general mental health, and greater depression. Loneliness was marginally associated with lower ART adherence. Findings suggest that Black adults living with HIV, who experience multiple intersectional stigmas, require targeted interventions and resources.

Treatment of Perinatal Depression and Correlates of Treatment Response Among Pregnant Women Living with HIV in Uganda.

INTRODUCTION: Perinatal depression is common among women living with HIV, but depression care is limited in low-resource settings. We examined (1) characteristics of women receiving Problem Solving Therapy (PST) versus antidepressant therapy (ADT), (2) treatment response by modality, and (3) correlates of treatment response. METHODS: This analysis used data from 191 Ugandan women in the intervention arm of a cluster randomized controlled trial of task-shifted, stepped-care depression treatment for pregnant women living with HIV (PWLWH). Treatment response was defined as scoring < 5 on the nine-item Patient Health Questionnaire (PHQ-9). Bivariate analysis and multivariable logistic regression were used to examine characteristics of women by treatment group and correlates of treatment response. RESULTS: Of 134 participants with depression, 129 (96%) were treated: 84 (65%) received PST and 45 (35%) received ADT. Severe depression at treatment initiation was more common in those receiving ADT (28.9% versus 4.8%, Fischer's Exact Test < 0.001). Treatment response was higher for PST (70/84; 83.3%) than ADT (30/45; 66.7%; p = .03). ADT side effects were rare and minor; no infants had serious congenital defects. Of 22 participants (19%) who did not respond to treatment, only five received intensified management. Social support and interpersonal violence were associated with treatment response (adjusted odds ratio, [aOR] = 3.06, 95% CI = 1.08-8.66 and aOR = 0.64, 95% CI = 0.44-0.93). DISCUSSION: Both depression treatment modalities yielded high response rates in Ugandan PWLWH; ADT was well-tolerated. Our results highlight a need to build capacity to implement the stepped-care protocol for non-responders and screen for social support and interpersonal violence.

Mediators and moderators of the effect of the game changers for cervical cancer prevention intervention on cervical cancer screening among previously unscreened social network members in Uganda.

INTRODUCTION: Cervical cancer (CC) rates are high in Uganda, yet CC screening rates are very low. Our peer advocacy group intervention, Game Changers for Cervical Cancer Prevention (GC-CCP), was shown to increase CC screening uptake among social network members. In this secondary analysis, we examined mediators and moderators of this effect to better understand how and for whom the intervention was most successful in promoting CC screening. METHODS: We conducted a pilot randomized controlled trial of GC-CCP in Namayingo district, Eastern Uganda between September 2021 and April 2022. Forty adult women who had screened for CC in the past year (index participants) enrolled at baseline: 20 were randomized to receive the 7-session intervention to empower women to engage in CC prevention advocacy, and 20 were assigned to the waitlist control; from these index participants, 103 unscreened social network members (alters) also enrolled. All participants were assessed at baseline and month 6 follow-up. Change in cognitive and behavioral CC-related constructs from baseline to month 6 were examined as mediators, using multivariate linear regression analysis. Index and alter demographics and index CC treatment status were examined as moderators. RESULTS: Increased alter engagement in CC prevention advocacy fully mediated the intervention effect on alter uptake of CC screening, and was associated with an increased likelihood of alter CC screening. CC treatment status of the index participant was the sole moderator of the intervention effect, as those in the intervention group who had screened positive and received treatment for pre-cancerous lesions were more likely to have alters who got screened for CC by month 6. CONCLUSION: The effect of GC-CCP on alter CC screening is greater when the alter reports increased engagement in her own advocacy for CC prevention with others. The intervention effects on increased engagement in CC prevention advocacy among both index and alter participants suggest a diffusion of advocacy, which bodes well for dissemination of knowledge and screening activation throughout a network and the larger community.

Unmet Social Needs are Associated with Lower Adherence to Antiretroviral Therapy (ART) Medication Among a Sample of Black People Living with HIV (PLHIV).

The current study examined the prevalence and typology of unmet needs and the association between unmet needs and HIV antiretroviral therapy (ART) medication adherence among a sample of Black people living with HIV(PLHIV) (N = 304) in Los Angeles, CA. We found a high prevalence of unmet needs, with 32% of participants reporting having two or more unmet needs. The most common unmet needs category was basic benefits needs (35%), followed by subsistence needs (33%), and health needs (27%). Significant correlates of unmet needs included food insecurity, history of homelessness, and history of incarceration. A greater number of unmet needs and any unmet basic benefits needs were each significantly associated with lower odds of HIV ART medication adherence. These findings provide further evidence linking the social determinants of health and social disenfranchisement to ART medication adherence among Black PLHIV.

Effects of M-DEPTH Model of Depression Care on Maternal HIV Viral Suppression and Adherence to the PMTCT Care Continuum Among HIV-Infected Pregnant Women in Uganda: Results from a Cluster Randomized Controlled Trial at Pregnancy Completion.

Perinatal depression has been shown to impede adherence to antiretroviral therapy (ART) and the prevention of mother-to-child transmission (PMTCT) care continuum; therefore, treating perinatal depression may result in increased viral suppression and PMTCT adherence. We examined the effects of the M-DEPTH (Maternal Depression Treatment in HIV) depression care model (including antidepressants and individual Problem Solving Therapy) on depression, maternal viral suppression and adherence to PMTCT care processes in an ongoing cluster-randomized controlled trial of 391 HIV-infected pregnant women (200 usual care; 191 intervention) with at least mild depressive symptoms enrolled across 8 antenatal care clinics in Uganda. At baseline, 68.3% had clinical depression and 41.7% had detectable HIV viral load. Adjusted repeated-measures multivariable regression models found that the intervention group was nearly 80% less likely to be clinically depressed [Adjusted OR (95% CI) 0.22 (0.05, 0.89)] at the 2-month post-pregnancy assessment, compared to the control group. However, the intervention and control groups did not differ meaningfully on maternal viral suppression, ART adherence, and other PMTCT care processes and outcomes. In this sample of women who were mostly virally suppressed and ART adherent at baseline, the depression care model had a strong effect on depression alleviation, but no downstream effects on viral suppression or other PMTCT care processes.Trial Registration NIH Clinical Trial Registry NCT03892915 (clinicaltrials.gov).

Interaction Effects in a 1D Flat Band at a Topological Crystalline Step Edge.

Step edges of topological crystalline insulators can be viewed as predecessors of higher-order topology, as they embody one-dimensional edge channels embedded in an effective three-dimensional electronic vacuum emanating from the topological crystalline insulator. Using scanning tunneling microscopy and spectroscopy, we investigate the behavior of such edge channels in Pb1-xSnxSe under doping. Once the energy position of the step edge is brought close to the Fermi level, we observe the opening of a correlation gap. The experimental results are rationalized in terms of interaction effects which are enhanced since the electronic density is collapsed to a one-dimensional channel. This constitutes a unique system to study how topology and many-body electronic effects intertwine, which we model theoretically through a Hartree-Fock analysis.

Prevalence and correlates of internalized stigma among adults with HIV and major depressive disorder in rural Malawi.

Internalized stigma is common among individuals with sexually transmitted infections such as HIV and among those with mental health conditions such as major depressive disorder (MDD). As part of a cluster randomized trial, we investigated the prevalence and correlates of internalized stigma among adults living with comorbid HIV and MDD in rural Malawi (n = 339). We found heightened stigma toward HIV and mental illness among those in the cohort: more than half of respondents (54%) endorsed negative perceptions associated with each health condition. Internalized HIV-related stigma was higher among those with no education (p = 0.04), younger adults (p = 0.03), and those with less social support (p = 0.001). Mental illness-related stigma was elevated among those with no source of income (p = 0.001), and it was also strongly associated with HIV-related stigma (p < 0.001). Our findings highlight potential avenues for reducing internalized stigma associated with high-prevalence health conditions in Malawi.Trial registration: ClinicalTrials.gov identifier: NCT04777006.

Randomized Controlled Trial of Rise, A Community-Based Culturally Congruent Counseling Intervention to Support Antiretroviral Therapy Adherence Among Black/African American Adults Living with HIV.

Structural inequities have led to HIV disparities, including relatively low antiretroviral therapy adherence and viral suppression rates among Black Americans living with HIV. We conducted a randomized controlled trial of Rise, a community-based culturally congruent adherence intervention, from January 2018 to December 2021 with 166 (85 intervention, 81 control) Black adults living with HIV in Los Angeles County, California [M (SD) = 49.0 (12.2) years-old; 76% male]. The intervention included one-on-one counseling sessions using basic Motivational Interviewing style to problem solve about adherence, as well as referrals to address unmet needs for social determinants of health (e.g., housing services, food assistance). Assessments included electronically monitored adherence; HIV viral load; and baseline, 7-month follow-up, and 13-month follow-up surveys of sociodemographic characteristics, HIV stigma, medical mistrust, and HIV-serostatus disclosure. Repeated-measures intention-to-treat regressions indicated that Rise led to significantly (two-fold) higher adherence likelihood, lower HIV stigmatizing beliefs, and reduced HIV-related medical mistrust. Effects on HIV viral suppression, internalized stigma, and disclosure were non-significant. Moreover, Rise was cost-effective based on established standards: The estimated cost per person to reach optimal adherence was $335 per 10% increase in adherence. Interventions like Rise, that are culturally tailored to the needs of Black populations, may be optimal for Black Americans living with HIV (ClinicalTrials.gov #NCT03331978).

RESUMEN: Las desigualdades estructurales han dado lugar a disparidades relacionadas con el VIH, incluyendo la relativamente baja adherencia a la terapia antirretroviral (TAR) y las tasas de supresión viral entre los afroamericanos que viven con el VIH. Conducimos una prueba controlada aleatoria de Rise, una intervención de adherencia culturalmente congruente basada en la comunidad, desde Enero de 2018 hasta Diciembre de 2021 con 166 (85 intervención, 81 controlada) adultos afroamericanos que viven con el VIH en el condado de Los Ángeles, California [M (SD) = 49.0 (12,2) años; 76% de hombres]. La intervención incluyó sesiones de asesoramiento individualizadas, usando el estilo básico Motivacional para las entrevistas, para resolver los problemas de adherencia como también referencias para confrontar sus necesidades insatisfechas de los determinantes sociales de la salud (por ejemplo, servicios de vivienda y asistencia de alimentos). Las evaluaciones incluyeron la adherencia monitoreada electrónicamente; la carga viral del VIH; y encuestas de referencia, seguimiento a los 7 meses y seguimiento a los 13 meses sobre características sociodemográficas, el estigma del VIH, la desconfianza médica y divulgación del estado serológico respecto al VIH. Los efectos sobre la supresión viral del VIH, el estigma interiorizado y la revelación de información no fueron significativos. Además, Rise fue rentable según los estándares establecidos: El costo estimado por persona para alcanzar la adherencia óptima fue de 335 dólares por cada 10% de aumento en la adherencia. Las intervenciones como Rise, que se adaptan culturalmente a las necesidades de las poblaciones afroamericana, podrían ser óptimas para los estadounidenses afroamericanos que viven con el VIH.