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There is a need to understand better the complex interrelationship between the adoption of masculinity during adolescence and the development of early romantic and sexual relationships. The purpose of this study was to describe features of adolescent masculinity and how it is expressed in the contexts of early to middle adolescent males’ romantic and sexual relationships. Thirty-three 14- to 16-year-old males were recruited from an adolescent clinic serving a community with high sexually transmitted infection rates and were asked open-ended questions about their relationships—how they developed, progressed, and ended. Participants described a high degree of relationally oriented beliefs and behaviors related to romantic and sexual relationships, such as a desire for intimacy and trust. The males also described a more limited degree of conventionally masculine beliefs and behaviors. These beliefs and behaviors often coexisted or overlapped. Implications for the clinical care of similar groups of adolescents are described. [ABSTRACT FROM PUBLISHER]

Objectives. We assessed factors associated with engagement in transactional sex among men who have sex with men recruited from one of the largest Internet sites for men seeking social or sexual interactions with other men in Latin America. Methods. We constructed multilevel logistic regression models to analyze factors associated with engagement in transactional sex in 17 Latin American countries in 2012. Results. Of 24 051 respondents, 1732 (7.2%) reported being paid for sexual intercourse in the past 12 months. In a multivariable model, higher country-level unemployment was associated with increased odds of transactional sex (adjusted odds ratio [AOR] = 1.07 per 1% increase in unemployment; 95% confidence interval [CI] = 1.00, 1.13). Individual or interpersonal factors associated with increased odds of engagement in transactional sex included self-reported HIV (AOR = 1.33; 95% CI = 1.04, 1.69) or sexually transmitted infection (AOR = 1.33; 95% CI = 1.11, 1.59), childhood sexual abuse history (AOR = 1.75; 95% CI = 1.48, 2.06), intimate partner violence (past 5 years, AOR = 1.68; 95% CI = 1.45, 1.95), and sexual compulsivity (AOR = 1.77; 95% CI = 1.49, 2.11). Conclusions. Structural-level economic interventions and those that address individual and interpersonal factors may improve HIV prevention efforts among men who have sex with men who engage in transactional sex. (Am J Public Health. 2015;105:e95–e102. doi:10.2105/AJPH.2014.302402) [ABSTRACT FROM AUTHOR]

The Internet is a commonly used medium for recruiting geographically dispersed, smaller populations quickly, such as young adult men-who-have-sex-with-men (YMSM). One approach to improve reach and representativeness is to employ multiple Internet platforms to recruit this hard-to-reach population. The utility of this approach has not been studied adequately, and its impact on the study sample recruited is not yet known. Using data from a study of 18- to 24-year-old HIV-uninfected, Black, Hispanic, and White United States (US) YMSM, this investigation compared advertising and enrollment metrics and participant characteristics of those recruited across Internet platforms. Of the 2,444 participants, their median age was 22 years old; 21% were Black, 37% Hispanic, and 42% White; 90% had been tested for HIV at least once in their life; and 87% reported prior condomless anal intercourse (CAI) with another man. There were noticeable differences across platforms in the number of people accessing the study website, meeting study eligibility requirements, consenting to participate, consenting to participate per day of advertising and per click, as well as costs of advertising per consented participant. Participants recruited also varied across platform by race/ethnicity, geographic area of residence in the US, health-care insurance status, years of formal education, history of HIV testing, and CAI by partner type and sexual positioning. The investigation results indicate that the Internet platforms used for recruitment significantly impact not only enrollment but also diversity and characteristics of the sample obtained and consequently, the observations and conclusions rendered.

About one-half of new HIV infections in the U.S. are among young men who have sex with men (YMSM). Research concerning HIV risk among YMSM, particularly in rural communities, is limited. This study utilized the theory of planned behavior to examine rural YMSM's views of HIV/AIDS prevention. Five YMSM were recruited from rural counties in southern Indiana and interviewed. Several commonalities and key concepts emerged among them. HIV/AIDS was not prominent in their lives. Consistent condom use was a normative belief among their peers but was not always practiced. The Internet provided a non-judgmental and comfortable forum for obtaining sexual health information. These young men's stories demonstrate the need for comprehensive approaches to HIV prevention for YMSM in rural communities. [ABSTRACT FROM AUTHOR]

Background: In 2010, the iPrEx trial demonstrated that oral antiretroviral pre-exposure prophylaxis (PrEP) reduced the risk of HIV acquisition among high-risk men who have sex with men (MSM). The impact of iPrEx on PrEP knowledge and actual use among at-risk MSM is unknown. Online surveys were conducted to assess PrEP awareness, interest and experience among at-risk MSM before and after iPrEx, and to determine demographic and behavioral factors associated with these measures. Methods and Findings: Cross-sectional, national, internet-based surveys were administered to U.S. based members of the most popular American MSM social networking site 2 months before (n = 398) and 1 month after (n = 4 558) publication of iPrEx results. Comparisons were made between these samples with regards to PrEP knowledge, interest, and experience. Data were collected on demographics, sexual risk, and experience with post-exposure prophylaxis (PEP). Regression analyses were performed to identify factors associated with PrEP awareness, interest, and experience post-iPrEx. Most participants were white, educated, and indicated high-risk sexual behaviors. Awareness of PrEP was limited pre- and post-iPrEx (13% vs. 19%), whereas interest levels after being provided with a description of PrEP remained high (76% vs. 79%). PrEP use remained uncommon (0.7% vs. 0.9%). PrEP use was associated with PEP awareness (OR 7.46; CI 1.52–36.6) and PEP experience (OR 34.2; CI 13.3–88.4). PrEP interest was associated with older age (OR 1.01; CI 1.00–1.02), unprotected anal intercourse with ≥1 male partner in the prior 3 months (OR 1.40; CI 1.10–1.77), and perceiving oneself at increased risk for HIV acquisition (OR 1.20; CI 1.13–1.27). Conclusions: Among MSM engaged in online networking, awareness of PrEP was limited 1 month after the iPrEx data were released. Utilization was low, although some MSM who reported high-risk behaviors were interested in using PrEP. Studies are needed to understand barriers to PrEP utilization by at-risk MSM.

Research has focused on adolescents' feelings about their first sexual experiences, but little research has examined this topic in sexual minority adolescents. In this study, we examined how experiencing emotional and physical satisfaction at first same-sex anal sex differed by age of first sex for young gay and bisexual men. We applied the time-varying effect model to data from an Internet survey of men who initiated first sex between ages 14–26 (n = 6401) to examine emotional and physical satisfaction at first same-sex anal sex across continuous age of onset and by partner factors. The majority of men reported satisfaction across all ages; however, satisfaction was generally less likely for men who had first anal sex with a non-relationship partner, an older partner, or a partner they had sex with only once and this was particularly true at earlier ages. Findings suggest that many young gay and bisexual men report satisfaction with their first anal sex and that relationship context can be important in predicting satisfaction, particularly at younger ages. [ABSTRACT FROM AUTHOR]

Sexual and gender minority (SGM) adverse childhood experiences (ACEs) are identity-based forms of early life adversity. Exposure to SGM ACEs is associated with increased odds of depression, anxiety, and post-traumatic stress disorder in SGM adults. The purpose of this study was to further test a revised version of the measure in a U.S. sample with more robust and clinically relevant mental health outcomes. In May and June 2022, a national sample of SGM adults (N=4,445) was recruited from a Qualtrics Panel to complete a 20-minute online survey that included questions regarding ACEs, SGM ACEs, depression, anxiety, and post-traumatic stress disorder. Exploratory factor analysis and confirmatory factor analysis were used to examine factor structure. Multivariable regression was used to assess criterion validity, and a sensitivity analysis was conducted. Data were analyzed in February 2023. Respondents indicate that vicarious trauma (81%) and school bullying (67%) were the most common experiences and that all SGM ACEs were frequently occurring before adulthood. Confirmatory factor analysis determined a 1-factor solution. Participants with more SGM adverse childhood experiences exposure had worse anxiety, depression, and post-traumatic stress disorder symptoms (β=0.16, β=0.18, β=0.26, respectively, p <0.0001) after controlling for ACEs exposure and demographic factors. A sensitivity analysis indicated that estimates were similar in terms of magnitude and direction. SGM ACEs commonly and frequently occur before adulthood and impact adult SGM mental health. Overall, the measure had good-to-excellent psychometric properties. Future research should consider integrating SGM ACEs and Minority Stress Theory. [ABSTRACT FROM AUTHOR]

An abstract of the article "HIV Care Continuum among MSM in Latin America Using Online Sexual Networking: Is Engagement in Care Related to Sexual Risk-taking?" by Jessica F. Magidson, Katie B. Biello and colleagues is presented.

Objectives: Gay and bisexual men may feel discomfort discussing sensitive topics such as sexual behaviors and substance use with their health providers, which may prevent them from receiving important health information. This study investigates whether patients' perceptions of their provider's sexual orientation predicts patient-provider discussions of sexual and general health topics, and whether this relationship is moderated by patients' disclosure of sexual orientation to providers.Methods: Data were collected online from a sample of 576 gay and bisexual men living in the USA, aged 18-26. Adjusted risk ratios were estimated by using modified Poisson regression with robust error variance.Results: Participants who believed their providers were gay or bisexual were more likely to have discussed sexual health topics, but not general health topics; simple slopes analyses revealed that this effect was stronger among those who had not disclosed to their providers. Disclosure was also consistently associated with increased likelihood of discussing almost all topics.Conclusions: Findings highlight differences in communication based on disclosure and perceived sexual orientation of provider, suggesting the need to further explore how these differences influence young gay and bisexual men's health.Practice Implications: Dyads may be more likely to discuss sexual health topics when patients believe their providers are sexual minorities themselves. In addition, patient-provider dyads may be likelier to discuss various health topics when providers are aware of patients' sexual minority statuses. [ABSTRACT FROM AUTHOR]

Despite being grouped together in epidemiological risk categories, gay, bisexual, and other men who have sex with men (GBM) are not a homogenous group. In addition to traditional segmentation along race, ethnicity, and socioeconomic status, many GBM also identify with sexual subcultural communities. Previous research has shown differences across a variety of health outcomes between these sexual subcultural communities. The purpose of this study was to determine whether HIV prevention practices among GBM differed according to sexual subcultural community. The study was conducted in collaboration with a popular social and sexual networking smartphone application company. A total of 23,577 GBM responded to the survey. A latent class analysis identified 6 distinct classes related to sexual subcultural community identification. We found significant differences across sociodemographic characteristics, HIV prevention practices, and condomless anal sex in the past 6 months related to sexual subculture identification. Findings suggest that sexual subcultural identity is related to decision-making around HIV prevention among GBM. Differences in HIV prevention strategies are likely a function of group norms, unique shared experiences among GBM identifying with a particular sexual subculture community, and sociodemographic characteristics associated with these groups. As such, sexual subculture identity should be considered in developing interventions and social marketing campaigns to increase uptake of biomedical HIV prevention tools among GBM. Identifying group norms and shared experiences related to HIV prevention practices among sexual subcultures is necessary to understand the role these identities play in lives of GBM, especially as it relates to their sexual health and well-being. [ABSTRACT FROM AUTHOR]

Objectives: In the United States, all men who have sex with men (MSM) were banned from donating blood from 1985 through 2015. In 2016, the guideline was amended such that men who had sexual contact with other men within the previous 12 months could not donate blood. We aimed to identify blood donation practices and their relationship with HIV risk and testing among young adult MSM (YMSM) at risk for having HIV. Methods: In 2014, we recruited HIV-negative non-Hispanic black, Hispanic, and non-Hispanic white YMSM aged 18-24 from across the United States through social media platforms to complete an online survey. Among these YMSM who previously donated blood, we conducted a secondary analysis examining the relationship between having donated blood within the past 12 months and sexual risk behavior from recent condomless anal intercourse (CAI), HIV testing, and self-perceived risk of having an undiagnosed HIV infection. Results: Of the 2261 YMSM surveyed, 1104 (48.8%) had ever previously donated blood and 305 (13.5%) had donated blood within the past 12 months. Of the 305 blood donors, 50 (16.4%) had ever had CAI before their most recent blood donation. Among YMSM who donated blood, past–12-month blood donation was more likely among YMSM who never had CAI (adjusted odds ratio [aOR] = 1.84; 95% confidence interval [CI], 1.24-2.73) than among YMSM who had CAI and more likely among YMSM who believed it was not possible at all that they had an undiagnosed HIV infection (aOR = 1.57; 95% CI, 1.14-2.16) than among YMSM who believed there was any possibility of having an undiagnosed HIV infection; it was not related to past–12-month HIV testing. Conclusions: YMSM donated blood frequently, suggesting that the deferral process in place did not prevent YMSM from donating blood. The current donor screening process should be reconsidered if it is to prevent YMSM from donating blood. Future research could identify screening questions that permit YMSM with a low risk of HIV infection to donate blood while maintaining the safety of the blood supply. [ABSTRACT FROM AUTHOR]

Abstract: [11C]Hemicholinium-15 ([11C]HC-15) and [18F]hemicholinium-15 ([18F]HC-15) have been synthesized as new potential PET tracers for the heart high-affinity choline uptake (HACU) system. [11C]HC-15 was prepared by N-[11C]methylation of the appropriate precursor, 4-methyl-2-phenyl-morpholin-2-ol, using [11C]CH3OTf in 55–70% radiochemical yield decay corrected to end of bombardment (EOB) and 2–3Ci/μmol specific activity at end of synthesis (EOS). [18F]HC-15 was prepared by N-[18F]fluoromethylation of the precursor using [18F]FCH2OTf in 20–30% radiochemical yield decay corrected to EOB and >1.0Ci/μmol specific activity at EOS. The biodistribution of both compounds was determined in rats at 20min post-intravenous injection, and the results show the heart region uptakes 1.32±0.75%ID/g in R-ventricle for [11C]HC-15 and 1.28±0.81%ID/g in L-ventricle for [18F]HC-15, respectively. The dynamic PET imaging studies of [11C]HC-15 in rats were acquired 60min post-intravenous injection of the tracer using the IndyPET-II scanner. For the blocking experiments, the rats were intravenously pretreated with 3.0mg/kg of unlabeled HC-15 prior to [11C]HC-15 injection. [11C]HC-15 rat heart PET studies show rapid heart uptake to give clear heart images. The rat heart PET blocking studies found no significant blocking effect. The dynamic PET studies in normal and ablated dogs were performed using Siemens PET scanner with [13N]NH3, [11C]HC-15, and [18F]HC-15. PET studies in dogs of both [11C]HC-15 and [18F]HC-15 also show significant heart uptake and give images of the heart. However, there is no significant change in [11C]HC-15 L-ventricle uptake following radiofrequency ablation in the dog. These results suggest that the localization of HC-15 tracers in the heart is mediated by non-specific processes, and the visualization of HC-15 tracers on the heart is related to non-specific binding of HACU. [Copyright &y& Elsevier]

Purpose: The purpose of this study was to assess the relationship between adverse childhood experiences (ACEs) exposure, perceived discrimination, and anxiety and depressive symptoms in sexual and gender minoritized (SGM) adults in the United States. Methods: Respondents ( n = 4445) from a national Qualtrics research panel completed a web-based survey. Guided by the stress proliferation (mediation model) and stress sensitization (moderation model) models, we examined the relationships between ACEs and perceived discrimination and the severity of anxiety and depressive symptoms in adulthood. Results: Cumulative ACEs exposure was positively associated with everyday discrimination scale (EDS) scores. ACEs and EDS scores had a significant direct association with anxiety and depressive symptoms. We found support for EDS as a mediator for anxiety ( β = 0.12, p < 0.001) and depressive symptoms ( β = 0.14, p < 0.001) and for ACEs as a moderator of the relationship between EDS and anxiety ( β = -0.04, p = 0.004) and depressive ( β = -0.05, p = 0.001) symptoms. Conclusions: These findings suggest that both stress proliferation and stress sensitization likely contribute to disparities in anxiety and depressive symptoms in SGM adults. This finding supports the integration of social safety and minority stress perspectives regarding health disparities in SGM populations. Exposure to early life adversity likely alters neurodevelopment, which in turn increases awareness of the lack of social safety in adulthood, reduces capacity to cope with minority stress exposure, and ultimately contributes to increased anxiety and depressive symptoms. Prevention efforts should focus on building positive and compensatory childhood experiences.

African American men who have sex with men (MSM) are disproportionately impacted by HIV and may benefit from the development of an HIV vaccine. African American MSM are adversely affected by discrimination as a function of both their race and sexual behaviors. This may further increase the challenges associated with persuading them to adopt an HIV vaccine. Developing a knowledge base characterizing African American MSM HIV vaccine perceptions, attitudes, and concerns may help strengthen how healthcare providers and other health stakeholders describe and discuss the advent of an HIV vaccine. This study assessed the knowledge, attitudes, beliefs, and intentions related to HIV vaccination among African American MSM. This study comprised 432 African American MSM, 18-64 years, residing in the United States. Vaccine intention was defined as how likely it is that an individual would adopt an HIV vaccine if a vaccine was available and it was 90% effective against HIV, easy to obtain, free, and had few side effects. Relative to African American MSM who intend to delay receiving an HIV vaccination, controlling for age, education, and income, early vaccine adopters who had received ≥ 2 COVID-19 vaccinations and who had high WHO HIV Vaccine Positive Attitude Scale scores were, respectively, 3.2 times and 2.4 times more likely to report the intention to vaccinate within one year. Early vaccine adopters were also 2.4 times more likely to feel that HIV prevention support discriminates against African American MSM. Those reporting three or more sexual partners and medical mistrust were, respectively, 60% and 59% more likely to report the intention to delay HIV vaccination. The lack of a knowledge base on HIV vaccine perceptions and acceptability is a missed opportunity to provide guidance on how stakeholders, such as health providers and policymakers, should address HIV vaccine hesitancy once this crucial vaccine is licensed. The key factors affecting vaccine adoption are valuable in developing and implementing campaigns to enhance the HIV vaccine coverage in this vulnerable population.

Competing Interests: Conflict of Interest and Sources of Funding: None declared.

Social biases may influence providers' judgments related to pre-exposure prophylaxis (PrEP) and patients' consequent PrEP access. US primary and HIV care providers (n = 370) completed an experimental survey. Each provider reviewed one fictitious medical record of a patient seeking PrEP. Records varied by patient race (Black or White) and risk behavior (man who has sex with men [MSM], has sex with women [MSW], or injects drugs [MID]). Providers reported clinical judgments and completed measures of prejudice. Minimal evidence of racially biased judgments emerged. Providers expressing low-to-moderate sexual prejudice judged the MSM as more likely than the MSW to adhere to PrEP, which was associated with greater PrEP prescribing intention; sexual prejudice was negatively associated with anticipated MSM adherence. Providers judged the MID to be at higher risk, less likely to adhere, less safety-conscious, and less responsible than both the MSM and MSW; adverse adherence and responsibility judgments were associated with lower prescribing intention., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Expanding PrEP access necessitates training that supports healthcare providers' progression along the PrEP implementation cascade, moving from PrEP awareness to prescription. We surveyed 359 USA providers about PrEP training content and format recommendations. We examined the association between cascade location and training recommendations. Most providers were aware of PrEP (100%), willing to prescribe PrEP (97.2%), had discussed PrEP with patients (92.2%), and had prescribed PrEP (79.9%). Latent class regression analysis revealed that cascade location was associated with training recommendations. Although all providers recommended PrEP-specific content (e.g., patient eligibility), providers who were located further along the cascade also recommended more comprehensive content, including sexual history-taking and sexual and gender minority competence training. Providers further along the cascade were also more likely to recommend interactive training formats (e.g., role-playing). These insights from providers furthest along the cascade indicate the importance of including comprehensive content and interactive formats in future PrEP training initiatives., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

The purpose of this study was to understand how bear identity influenced condom use during the last anal sex event. Participants were recruited to complete an online, anonymous self-report survey through bear-related sexual and social networking websites. A total of 1,080 men who identified as gay or bisexual and as a member of the bear community and were 18 years or older completed the survey. Overall, fewer than a third of men reported condom use during the most recent receptive (28%) and insertive (30%) anal sex event. Men in bear concordant pairings were less likely to use a condom during receptive and insertive anal sex compared to those is discordant pairings (p < .05). Findings suggest that bear identity concordance influences condom use during anal sex after accounting for an individual's relationship to their most recent partner as well as other confounding variables.

We sought to determine, in a sample of 2,813 HIV seronegative young men who had sex with other men age 18-24, whether physical satisfaction would explain emotional satisfaction during first anal intercourse and whether emotional satisfaction would impact having sex with a partner a second time. Emotional satisfaction was explained mostly by physical satisfaction during the event, but partner type also had direct impact on emotional satisfaction. Our findings suggest that first anal intercourse experiences in young men are both emotionally and physically satisfying and may impact subsequent sexual behavior and partner decision-making.

Introduction: Transactional sex has been associated with increased risk of adverse health outcomes, including sexually transmitted infections (STIs)., Methods: Participants included female sex workers and men they recruited utilizing incentivized snowball sampling. Participants provided specimens for STI diagnostic testing and completed a semi-structured interview., Results: Forty-four participants aged 19-65 were interviewed. Participants found self-sampling to be acceptable and overwhelmingly endorsed sampling outside of a clinic (90%) for reasons such as convenience, privacy, and lack of stigma. A substantial minority (38%) tested positive for at least one STI., Conclusion: Novel strategies may encourage sexual health care and prevent STIs among sex workers. High infection and screening acceptance rates across the sample suggests that individuals engaged in transactional sex would benefit from, and would be responsive to, community-based self-sampling for STI screening.