Systematic analysis of ocular features and responses of cultured spotted wolffish (Anarhichas minor).

A better understanding of unique anatomical and functional features of the visual systems of teleost fish could provide key knowledge on how these systems influence the health and survival of these animals in both wild and culture environments. We took a systematic approach to assess some of the visual systems of spotted wolffish (Anarhichas minor), a species of increasing importance in North Atlantic aquaculture initiatives. The lumpfish (Cyclopterus lumpus) was included in these studies in a comparative manner to provide reference. Histology, light and electron microscopy were used to study the spatial distribution and occurrence of cone photoreceptor cells and the nature of the retinal tissues, while immunohistochemistry was used to explore the expression patterns of two photoreceptor markers, XAP-1 and XAP-2, in both species. A marine bacterial infection paradigm in lumpfish was used to assess how host-pathogen responses might impact the expression of these photoreceptor markers in these animals. We define a basic photoreceptor mosaic and present an ultrastructural to macroscopic geographical configuration of the retinal pigment tissues in both animals. Photoreceptor markers XAP-1 and XAP-2 have novel distribution patterns in spotted wolffish and lumpfish retinas, and exogenous pathogenic influences can affect the normal expression pattern of XAP-1 in lumpfish. Live tank-side ophthalmoscopy and spectral domain optical coherence tomography (SD-OCT) revealed that normal cultured spotted wolffish display novel variations in the shape of the retinal tissue. These two complementary imaging findings suggest that spotted wolffish harbour unique ocular features not yet described in marine teleosts and that visual function might involve specific retinal tissue shape dynamics in these animals. Finally, extensive endogenous biofluorescence is present in the retinal tissues of both animals, which raises questions about how these animals might use retinal tissue in novel ways for visual perception and/or communication. This work advances fundamental knowledge on the visual systems of two economically important but now threatened North Atlantic teleosts and provides a basic foundation for further research on the visual systems of these animals in health versus disease settings. This work could also be useful for understanding and optimizing the health and welfare of lumpfish and spotted wolffish in aquaculture towards a one health or integrative perspective.

Burden and Correlates of Mental Health Symptoms Among Young Black Gay, Bisexual, and Other Men Who Have Sex with Men Engaged in HIV Care in Atlanta.

Mental health comorbidities are prevalent among young Black gay, bisexual, and other men who have sex with men (YB-GBMSM) living with HIV and can adversely impact HIV-related outcomes. We conducted a cross-sectional survey study with 100 YB-GBMSM recruited from two HIV care centers in Atlanta, and constructed multivariable logistic and linear regression models to examine correlates of depression, anxiety, trauma symptoms, and general well-being. In adjusted models, full-time employment was associated with fewer depressive symptoms, while HIV stigma and substance use were associated with higher levels of depressive symptoms. Younger age and full-time employment were negatively associated with severe anxiety, while HIV stigma was positively associated with severe anxiety and trauma symptoms. Trust in physicians, lower HIV stigma, full-time employment, and lack of substance use were associated with higher average general well-being scores. In conclusion, we found high frequency of depressive, anxiety, and trauma-related symptoms among this sample of YB-GBMSM living with HIV. Unemployment, substance use, and HIV stigma emerged as particularly salient correlates of psychological morbidity, suggesting a need for structural and community-level interventions to address mental health in this population.

Bullying victimization, psychosocial functioning, and protective factors: Comparing African American heterosexual and sexual minority adolescents in Chicago's Southside.

African American heterosexual and sexual minority (SM) adolescents report widespread bullying victimization (BV), which is associated with poorer psychosocial functioning. However, studies examining potential protective factors that moderate this association are limited. Using data from a cross-sectional study conducted in Chicago, we examined the association between BV and psychosocial functioning among a sample of heterosexual (n = 475) and SM (n = 105) African American adolescents and examined whether four empirically-supported protective factors moderated these associations. Among SM adolescents, having close parents was protective against psychosomatic symptoms for those who reported high BV and having caring teachers was protective against substance use for those who reported both high and low BV. Among heterosexual adolescents, having close parents was protective against substance use for those who reported high BV but having high neighborhood support exacerbated the risk of developing psychosomatic symptoms for those who reported high BV. Implications for school and parental-based interventions are discussed.

Racialized Sexual Discrimination (RSD) in the Age of Online Sexual Networking: Are Young Black Gay/Bisexual Men (YBGBM) at Elevated Risk for Adverse Psychological Health?

Young Black gay/bisexual men (YBGBM) are a highly marginalized population across multiple health outcomes. Most research on YBGBM health has focused on HIV/sexual health, but there is a demonstrable need for research examining racism and psychosocial functioning among this population. Racialized Sexual Discrimination (RSD), also known as sexual racism, is an important but under-investigated phenomenon that may have implications for the psychological health and well-being of YBGBM. This paper provides an overview of empirical research on RSD as experienced by gay/bisexual men of color in online partner-seeking venues. First, the researchers discuss how racialized experiences are a documented online phenomenon, with a variety of manifestations, and identify the potential effects that this phenomenon may have on the psychosocial health of YBGBM, and gay/bisexual men of color as a whole. Second, the researchers synthesize the RSD literature with a broader literature examining psychological well-being across race and sexual orientation. Third, the researchers present a theoretically grounded conceptual model detailing the pathways between RSD and psychological well-being using a stress and coping framework. The paper concludes with recommendations for future research on this topic, including scale development and hypothesis testing.

Awareness and Acceptability of pre-exposure prophylaxis (PrEP) among gay, bisexual and other men who have sex with men (GBMSM) in Kenya.

Kenyan gay, bisexual, and other men who have sex with men (GBMSM) are significantly affected by HIV. Pre-exposure prophylaxis (PrEP) is an effective biomedical approach to HIV prevention. We conducted a cross-sectional survey of 459 HIV-negative Kenyan GBMSM to assess individual and interpersonal correlates of PrEP awareness/acceptability using univariate and hierarchical logistic regression modeling. We found that 64.3% of participants had heard of PrEP and 44.9% were willing to use PrEP. In hierarchical logistic regression models for PrEP awareness, condom use with regular partners, higher condom use self-efficacy, higher perceived ability to use PrEP, history of STI, and membership in LGBT organization were significantly associated with being aware of PrEP (χ2 = 69.6, p < .001). In hierarchical logistic regression models for PrEP acceptability, higher self-esteem, higher condom use self-efficacy, depression/anxiety, higher perceived ability to use PrEP, willingness to engage in PrEP follow-up visits, coercion at sexual debut, and family exclusion were significantly associated with being acceptable to PrEP (χ2 = 231.8, p < .001). Individual and interpersonal factors were significantly associated with PrEP awareness and acceptability. Our findings underscore the need to promote awareness and understanding of PrEP as an effective HIV prevention tool in combination with other safer-sex methods that are appropriate given an individual's personal circumstances.

Psychosocial Functioning and Decisional Balance to Use Condoms in a Racially/Ethnically Diverse Sample of Young Gay/Bisexual Men Who Have Sex with Men.

Young gay/bisexual and other men who have sex with men (YGBMSM; ages 18-24) are experiencing an increase in HIV infection rates, particularly if they are Black or Latino. Psychosocial functioning is consistently implicated in HIV risk behaviors; however, less is known about the role of these factors in YGBMSM's decision-making process to use condoms (i.e., decisional balance to use condoms; DBC). We examined whether YGBMSM's psychological functioning was associated differentially with their DBC across racial/ethnic groups. Using data from a cross-sectional web-survey of single YGBMSM (N = 1380; 9.9% Black; 18.6% Latino; 71.5% White), we performed racial/ethnic-specific multivariable regression models to explore the association between DBC and psychological factors (e.g., depression, anxiety), demographics (e.g., age, education, HIV status, prior STI diagnosis), and perceived difficulty implementing safer sex strategies. Black YGBMSM reported lower DBC if they reported higher depression symptoms (ß = -.31, p < .05), were HIV-negative (ß = -.20, p < .05), and had greater difficulty implementing safer sex strategies (ß = -.32, p < .001). Latino participants reported greater DBC to use condoms if they reported greater anxiety symptoms (ß = .21, p < .05). White participants reported greater DBC if they were younger (ß = -.09, p < .01), did not report a prior STI (ß = .10, p < .001), and had fewer difficulties implementing safer sex strategies (ß = -.27, p < .001); DBC had no association to psychological well-being among White participants. Psychological factors may be differentially associated with DBC across racial/ethnic group categories. Health promotion initiatives targeting condom use may benefit from culturally tailored interventions that address psychosocial functioning and its role in YGBMSM's condom use decision-making.

Drugs, Sex, and Condoms: Identification and Interpretation of Race-Specific Cultural Messages Influencing Black Gay and Bisexual Young Men Living with HIV.

Black gay and bisexual young men carry a disproportionate burden of HIV in the United States. This study explored Black gay and bisexual young men living with HIV's identification and interpretation of race-specific cultural messages regarding substance use, sexual activity, and condom use. A total of 36 Black gay and bisexual young men living with HIV (ages 16-24, mean = 20.6 years) from four geographically diverse regions of the United States participated in qualitative in-depth interviews. Results from this study elucidate the ways in which these young men interpret various forms of race-specific cultural messages and experiences regarding substance use, sexual activity, and condom use. Participants discussed cultural messages and experiences promoting and discouraging condoms and substance use. Regarding sexual activity, only messages and experiences promoting sex were reported. Across all three categories, messages and experiences promoting risk were predominant. Data further revealed that socially transmitted cultural messages received by young men emanated from multiple sources, such as family, peers, sexual partners, community/neighborhood, and the broader society. Race-specific cultural messages and experiences should be addressed in interventions for this population, and programs should assist young men in developing a critical consciousness regarding these messages and experiences in order to promote health and well-being.

Shear-Thinning Supramolecular Hydrogels with Secondary Autonomous Covalent Crosslinking to Modulate Viscoelastic Properties In Vivo.

Clinical percutaneous delivery of synthetically engineered hydrogels remains limited due to challenges posed by crosslinking kinetics - too fast leads to delivery failure, too slow limits material retention. To overcome this challenge, we exploit supramolecular assembly to localize hydrogels at the injection site and introduce subsequent covalent crosslinking to control final material properties. Supramolecular gels were designed through the separate pendant modifications of hyaluronic acid (HA) by the guest-host pair cyclodextrin and adamantane, enabling shear-thinning injection and high target site retention (>98%). Secondary covalent crosslinking occurred via addition of thiols and Michael-acceptors (i.e., methacrylates, acrylates, vinyl sulfones) on HA and increased hydrogel moduli (E=25.0±4.5kPa) and stability (>3.5 fold in vivo at 28 days). Application of the dual-crosslinking hydrogel to a myocardial infarct model showed improved outcomes relative to untreated and supramolecular hydrogel alone controls, demonstrating its potential in a range of applications where the precise delivery of hydrogels with tunable properties is desired.

Injectable and bioresponsive hydrogels for on-demand matrix metalloproteinase inhibition.

Inhibitors of matrix metalloproteinases (MMPs) have been extensively explored to treat pathologies where excessive MMP activity contributes to adverse tissue remodelling. Although MMP inhibition remains a relevant therapeutic target, MMP inhibitors have not translated to clinical application owing to the dose-limiting side effects following systemic administration of the drugs. Here, we describe the synthesis of a polysaccharide-based hydrogel that can be locally injected into tissues and releases a recombinant tissue inhibitor of MMPs (rTIMP-3) in response to MMP activity. Specifically, rTIMP-3 is sequestered in the hydrogels through electrostatic interactions and is released as crosslinks are degraded by active MMPs. Targeted delivery of the hydrogel/rTIMP-3 construct to regions of MMP overexpression following a myocardial infarction significantly reduced MMP activity and attenuated adverse left ventricular remodelling in a porcine model of myocardial infarction. Our findings demonstrate that local, on-demand MMP inhibition is achievable through the use of an injectable and bioresponsive hydrogel.

The use of mystery shopping for quality assurance evaluations of HIV/STI testing sites offering services to young gay and bisexual men.

Young men who have sex with men (YMSM) are at increased risk for HIV and STI infection. While encouraging HIV and STI testing among YMSM remains a public health priority, we know little about the cultural competency of providers offering HIV/STI tests to YMSM in public clinics. As part of a larger intervention study, we employed a mystery shopper methodology to evaluate the LGBT cultural competency and quality of services offered in HIV and STI testing sites in Southeast Michigan (n = 43).We trained and deployed mystery shoppers (n = 5) to evaluate the HIV and STI testing sites by undergoing routine HIV/STI testing. Two shoppers visited each site, recording their experiences using a checklist that assessed 13 domains, including the clinic's structural characteristics and interactions with testing providers. We used the site scores to examine the checklist's psychometric properties and tested whether site evaluations differed between sites only offering HIV testing (n = 14) versus those offering comprehensive HIV/STI testing (n = 29). On average, site scores were positive across domains. In bivariate comparisons by type of testing site, HIV testing sites were more likely than comprehensive HIV/STI testing clinics to ascertain experiences of intimate partner violence, offer action steps to achieve safer sex goals, and provide safer sex education. The developed checklist may be used as a quality assurance indicator to measure HIV/STI testing sites' performance when working with YMSM. Our findings also underscore the need to bolster providers' provision of safer sex education and behavioral counseling within comprehensive HIV/STI testing sites.

Whose Role is It Anyway? Sexual Racism and Sexual Positioning Among Young Sexual Minority Black Men.

Racialized Sexual Discrimination (RSD), also referred to as "sexual racism," is widely reported among young sexual minority Black men (YSMBM). Though RSD is driven in part by sexual scripts and racial stereotypes, little is known about YSMBM's experiences with RSD with respect to their sexual positioning roles. Using data from a cross-sectional web-survey of YSMBM (N = 726), a multivariate Kruskal Wallis test was conducted comparing YSMBM who identified as mostly bottom, versatile, or mostly top, on the degree to which they were affected by four RSD experiences, as well as the frequency with which they encountered these experiences. Men identifying as mostly bottom reported significantly stronger negative reactions to same-race rejection and encountering sexual role assumptions than men identifying as mostly top. Men identifying as versatile encountered same-race rejection significantly more frequently than men identifying as mostly top. Men identifying as mostly bottom encountered White superiority significantly more frequently than men identifying as mostly top. RSD may impact YSMBM differentially based on sexual position. These findings may have implications for culturally competent clinical practice, as well as analytic implications (e.g., estimating more complex statistical models) for sexual racism research, which remains an important yet underexamined field in the health sciences.

Descriptive experiences and sexual vs. nurturant aspects of cuddling between adult romantic partners.

Touch is a critical factor in intimate bonds between romantic partners. Although cuddling is a key expression of intimacy, it has received little empirical attention. Past research suggests that cuddling has some sexual aspects (e.g., it increases testosterone [T]), but there are theoretical reasons to expect cuddling to also involve nurturant intimacy (which should decrease T). In this article, we examined the phenomenon of partner cuddling to: (1) provide a descriptive examination; (2) determine if cuddling involved only nurturant intimacy or also sexual intimacy; and (3) test whether cuddling was perceived as nurturant but experienced as sexual. Via an online questionnaire, 514 participants (338 women) responded to quantitative and qualitative questions about cuddling with their romantic partners. Results suggested that cuddling occurred frequently and for relatively long durations, and was viewed very positively. Findings also showed that cuddling was perceived as nurturant and non-sexual but was experienced as at least somewhat sexual, which may explain why past research had found that cuddling increased T. Correlational analyses linked cuddling frequency and enjoyment positively with partnered sexual activities, but negatively with solitary sexuality. Results were discussed relative to evolutionary theories of distinct but overlapping neurobiological systems underlying pair bonding that involve sexual and nurturant intimacy.

Integrating Ambulatory Addiction Consultation Service Into a Community Mental Health Center.

Despite the escalation in substance related overdose mortality-culminating in more than 100,000 deaths in each of the first 2 years of the COVID-19 pandemic-healthcare systems have not kept up with the demands for care among people who use drugs. There remains a significant gap in access to evidence-based treatment. The addiction consult services has served to address this gap, as a critical intervention that engages mostly hospitalized patients and initiate addiction treatment in acute settings, but little is known about addiction consult services in ambulatory settings. This model of care could potentially serve to scale up the care for people who use drugs in the community by embedding the limited number of addiction professionals within existing ambulatory systems, thus extending their reach. We describe here an innovative, yet simple and potentially replicable model for an ambulatory addiction consultation service in a large, advanced community mental health center.

Racial/ethnic differences in parenting behaviors as protective factors in adolescent internalizing problems.

The current study explores variations among racially/ethnically diverse adolescents regarding parents' role in mitigating internalizing problems. Adolescents with a higher level of parental awareness, ease of talking to parents, and parental support were less likely to show internalizing problems. Parental awareness was negatively associated with internalizing problems among Whites and Hispanics. The ease of talking to parents was significant for all groups except for American Indians/Alaska Natives. These findings can inform culturally relevant treatments.

Online Dating and Mental Health among Young Sexual Minority Black Men: Is Ethnic Identity Protective in the Face of Sexual Racism?

Racialized Sexual Discrimination (RSD), also known as 'sexual racism,' is pervasive within online dating venues. RSD is associated with poor mental health outcomes among young sexual minority Black men (YSMBM), and there is limited research on factors that may mitigate this association. Ethnic identity has been identified as a potential protective factor for racial/ethnic minorities who encounter racialized stressors, though some evidence suggests that ethnic identity may also intensify the negative effects of racial discrimination. Using data from a cross-sectional web-survey of YSMBM (n = 690), a series of linear regression models were estimated to examine the moderating effect of ethnic identity search and ethnic identity commitment on the relationship between RSD and depressive symptoms/feeling of self-worth. Results indicated that having moderate-to-high scores on commitment attenuated the association between being physically objectified by White men and higher depressive symptoms. However, having high scores on commitment intensified the association between being rejected by Black men and lower feelings of self-worth. Stronger identity commitment may be protective against objectification from White men, though it may also exacerbate negative outcomes related to in-group discrimination. These findings may have important implications for the development of individual and group-level interventions addressing ethnic identity among YSMBM.

A Good App Is Hard to Find: Examining Differences in Racialized Sexual Discrimination across Online Intimate Partner-Seeking Venues.

Young sexual minority Black men (YSMBM) report widespread instances of Racialized Sexual Discrimination (RSD) when seeking intimate partners online. RSD is associated with negative psychological health outcomes; however, little is known about the differences between virtual environments, and whether users are exposed to differential types/frequencies of RSD across different virtual environments. Using data from a cross-sectional web survey of YSMBM (N = 548), a multivariate Kruskal-Wallis test was conducted comparing those who primarily used Jack'd and those who primarily used Grindr to meet intimate partners; the frequency with which these two groups encountered six RSD domains was compared. Men who primarily used Grindr reported more frequent instances of White superiority and rejection from White men compared with men who primarily used Jack'd. Men who primarily used Jack'd reported more frequent instances of physical objectification from Black men compared with men who primarily used Grindr. RSD may manifest differentially based on the specific venue that YSMBM use. Such differences may reflect the sociodemographic makeup of these spaces, as well as differences in acceptability/normalization of different forms of RSD. These findings have implications for the development of anti-RSD initiatives that target the specific sociocultural norms that are unique to different virtual environments.

Development and Evaluation of a Three-Dimensional-Printed Pediatric Intraosseous Infusion Simulator To Enhance Medical Training.

Vascular access is an essential and rate-limiting step during pediatric resuscitation efforts. Intraosseous (IO) access, an effective resuscitative strategy, remains underutilized in emergency departments. Many medical graduates report never performing the procedure before graduation, and it has been recommended that continuing education and in-servicing programs be implemented to increase the use and familiarity of IO access. The goal of this technical report is to describe the development and evaluation of a three-dimensional (3D)-printed Pediatric IO Infusion Model for simulation-based medical education. The simulator was designed by combining open-source models of a human skeleton and a lower leg surface scan in Blender (Blender Foundation, Amsterdam, Netherlands; www.blender.org), scaled to a pediatric size, and manipulated further using a JavaScript program. Polylactic acid was used to simulate bone while silicone molds were used as skin and soft tissue. Two trainers were produced and evaluated by seven emergency medicine physicians, two family medicine residents, and three medical students. Overall, the simulator was positively received with all participants indicating they would recommend it to assist in the training of others. Suggestions focused on enhancing the anatomical representations of both the skin and bones to enhance the learner experience. The content and outcomes of this report support the use of this simulator as part of simulation-based medical education.

Racialized Sexual Discrimination (RSD) in Online Sexual Networking: Moving from Discourse to Measurement.

Young Black gay/bisexual men (YBGBM) are at disproportionate risk for poor health outcomes due to multilevel stressors, such as community- and individual-level discrimination. Racialized Sexual Discrimination (RSD) is an under-examined type of discrimination experienced by gay/bisexual men of color when seeking partners online. RSD may be a driving force behind sexual network restriction (which elevates YBGBM's risk for HIV infection) and may have an adverse impact on YBGBM's psychological wellbeing. Thus, adequate measurement of this phenomenon is essential. Focus groups with young gay/bisexual men of color were conducted to generate survey content that captured RSD experiences; the resultant information was used to develop an RSD scale. The scale, along with other sociodemographic measures, was administered to a sample of 634 YBGBM. An exploratory factor analysis was conducted on the scale. Results revealed an 8-factor structure: 1-White superiority; 2-White inferiority; 3-White rejection; 4-same-race rejection; 5-White physical objectification; 6-same-race physical objectification); 7-degradation; and 8-role assumptions. The scale was psychometrically sound and demonstrated good reliability, providing preliminary support for the scale's utility in social science research. Future research should further refine the scale and examine the association between RSD and sexual/mental health outcomes among YBGBM.

A Case of Schizophrenia With Catatonia Resistant to Lorazepam and Olanzapine Monotherapy But Responsive to Combination Treatment: Is It Time to Consider Using Select Second-Generation Antipsychotics Earlier in the Treatment Algorithm for This Patient Type?

OBJECTIVE: Catatonia is a distinct psychomotor syndrome that involves a constellation of up to 40 different symptoms. Although conventionally responsive to benzodiazepines, the catatonic syndrome is much more resistant to benzodiazepine treatment when a feature of schizophrenia. METHOD: We present a patient with schizophrenia with catatonic symptoms, marginally responsive to lorazepam challenge, lorazepam, and olanzapine monotherapy, but ultimately began combination treatment with these 2 medications. RESULTS: Our patient's score on the Bush-Francis Catatonia Rating Scale significantly decreased after 2 weeks of combination lorazepam and olanzapine without adverse effects. CONCLUSION: We propose a modification to the standard treatment protocol for catatonia, especially in those patients with schizophrenia with catatonic features.

Gender Role Strain and the Precarious Manhood of Sexual Minority Kenyan Men.

Examining the impact of precarious manhood on the mental health of sexual minority men living in Kenya, we hypothesized that (a) men who have sex with men exclusively (MSME) and men who have sex with men and women (MSMW) would display differential patterns of conformity to norms of masculinity; (b) these differences would result in distinct patterns of association between masculine conformity and symptoms of psychological distress for MSME and MSMW; and (c) conformity to norms of masculinity would be bidirectionally associated with symptoms of depression and anxiety. Using data collected from 391 young men who participated in a community-based, cross-sectional study of HIV-related risk and resilience among young sexual minority men in western Kenya, we ran a multivariate analysis of variance (MANOVA) to assess differences in conformity to masculine norms and four hierarchical linear regression models to examine the associations between conformity to masculine norms and symptoms of anxiety and depression for MSME and MSMW. MANOVA results revealed no significant differences between MSME and MSMW in overall conformity to masculinity, although MSMW were significantly more likely to conform to the masculine norm of power over women. Regression results revealed that conformity to norms of masculinity was bidirectionally associated with psychological distress and that these patterns of association were distinct for MSME and MSMW. The discussion explores possible explanations for revealed differences between MSME and MSMW using existing research. Clinical implications, limitations, and opportunities for future research are also discussed.