Evolution of attack in handball when playing 7 vs. 6 with empty goal between 2020 and 2023: coaches' perception vs. observational results.

Introduction: Recently, several studies on the 7 vs. 6 "empty goal" (EG) in handball have produced different and even contradictory results. The aim of the present study was to investigate the behavior of teams and players in the 7 vs. 6 EG attack in the European (Euro) and World Championships (WCh) between 2020 and 2023 and characterize the coaches' perceptions. Methods: A mixed-methods approach was used, consisting of the following: (i) an observational methodology and instrument developed and validated to collect observational data on player and team behavior; and (ii) a developed and validated questionnaire to coaches on their perceptions of the 7 vs. 6 game. Observational data were collected during the Euro 2020 and 2022 games (n = 62) and the WCh 2021 and 2023 games (n = 70). A total of 132 games and 391 situations of 7 vs. 6 attacking sequences were observed. In total, 156 coaches participated (146 men), with a mean age 42.33 ± 11.87 years, 19 nationalities, and with 12.77 ± 9.45 years of experience. Results and discussion: The choice of 7 vs. 6 offensive play was mostly made in the second half (>73%). The effectiveness of 7 vs. 6 offensive sequences was higher in the top six teams than in the team's ranked 7th to 12th (Euro 2020 51.6%-50.0%; WCh 2021 52.0%-50.0%; Euro 2022 53.1%-41.7%; WCh 2023 50.0%-43.8%). Some patterns of association were found (p < 0.05 and with values >±1.96): (i) scoring a goal with a breakthrough shot was significantly associated with the effectiveness of the 7 vs. 6 attack (Euro 2020 2.61; WCh 2021 2.87; Euro 2022 2.68; WCh 2023 2.32); (ii) teams in the top six significantly used 7 vs. 6 when they were winning (Euro 2020 2.17; WCh 2021 3.52; Euro 2022 5.88; WCh 2023 2.54); and (iii) teams in the bottom six used it when they were losing by at least four goals (Euro 2020 7.56; Euro 2022 6.64; WCh 2023 4.37) or when they were winning by four goals or more (WCh 2021 2.58). Coaches that agree with the possibility of playing 7 vs. 6 (74.4%), rarely or never do so (55.6%) because it brings little or no advantage (52.6%). The results of the analysis confirmed the perception of the coaches, the low use of 7 vs. 6, the low advantage associated with it, and the influence of the result and the moment of the game on its use.

Mitochondria as central hubs in synaptic modulation.

Mitochondria are present in the pre- and post-synaptic regions, providing the energy required for the activity of these very specialized neuronal compartments. Biogenesis of synaptic mitochondria takes place in the cell body, and these organelles are then transported to the synapse by motor proteins that carry their cargo along microtubule tracks. The transport of mitochondria along neurites is a highly regulated process, being modulated by the pattern of neuronal activity and by extracellular cues that interact with surface receptors. These signals act by controlling the distribution of mitochondria and by regulating their activity. Therefore, mitochondria activity at the synapse allows the integration of different signals and the organelles are important players in the response to synaptic stimulation. Herein we review the available evidence regarding the regulation of mitochondrial dynamics by neuronal activity and by neuromodulators, and how these changes in the activity of mitochondria affect synaptic communication.

Intracranial Subdural Hygroma: A Rare Complication of Failed Neuraxial Anesthesia?

The unintentional puncture of the dura during epidural procedures is a noteworthy and prevalent complication in obstetric patients. Early recognition can be difficult, particularly when attempts at neuraxial anesthesia are unsuccessful. Rare intracranial complications, such as subdural hematomas and subdural hygromas, can occur after dural puncture and they should be suspected in the presence of atypical headaches or other neurological symptoms. We describe a case of a woman who had an unrecognized dural puncture following failed neuraxial anesthesia and later presented with symptoms of intracranial hypotension. Urgent investigation with cranial CT scan revealed two intracranial subdural hygromas. We discuss the diagnosis, follow-up, and successful management of this case with an epidural blood patch. It is crucial to maintain a high level of suspicion for complications after neuraxial anesthesia and to have a low threshold for imaging and investigation to prevent unfavorable or fatal consequences.

(R)-ketamine attenuates neurodevelopmental disease-related phenotypes in a mouse model of maternal immune activation.

Infections during pregnancy are associated with an increased risk of neuropsychiatric disorders with developmental etiologies, such as schizophrenia and autism spectrum disorders (ASD). Studies have shown that the animal model of maternal immune activation (MIA) reproduces a wide range of phenotypes relevant to the study of neurodevelopmental disorders. Emerging evidence shows that (R)-ketamine attenuates behavioral, cellular, and molecular changes observed in animal models of neuropsychiatric disorders. Here, we investigate whether (R)-ketamine administration during adolescence attenuates some of the phenotypes related to neurodevelopmental disorders in an animal model of MIA. For MIA, pregnant Swiss mice received intraperitoneally (i.p.) lipopolysaccharide (LPS; 100 µg/kg/day) or saline on gestational days 15 and 16. The two MIA-based groups of male offspring received (R)-ketamine (20 mg/kg/day; i.p.) or saline from postnatal day (PND) 36 to 50. At PND 62, the animals were examined for anxiety-like behavior and locomotor activity in the open-field test (OFT), as well as in the social interaction test (SIT). At PND 63, the prefrontal cortex (PFC) was collected for analysis of oxidative balance and gene expression of the cytokines IL-1ß, IL-6, and TGF-ß1. We show that (R)-ketamine abolishes anxiety-related behavior and social interaction deficits induced by MIA. Additionally, (R)-ketamine attenuated the increase in lipid peroxidation and the cytokines in the PFC of the offspring exposed to MIA. The present work suggests that (R)-ketamine administration may have a long-lasting attenuation in deficits in emotional behavior induced by MIA, and that these effects may be attributed to its antioxidant and anti-inflammatory activity in the PFC.

Important steps for PrEP uptake among adolescent men who have sex with men and transgender women in Brazil.

HIV Pre-exposure prophylaxis (PrEP) is an effective prevention tool, but there are still few studies about PrEP uptake among adolescents. We aimed to analyze the PrEP uptake process and factors associated with daily oral PrEP initiation among adolescent men who have sex with men (aMSM) and transgender women (aTGW) in Brazil. Baseline data from the first demonstration PrEP cohort study among aMSM and aTGW 15-19 years old (yo) ongoing in three large Brazilian cities (PrEP1519). After completing informed consent procedures, participants were enrolled in the cohort from February/2019 to February/2021. A socio-behavioral questionnaire was applied. Factors associated with PrEP initiation were assessed using a logistic regression model with adjusted prevalence ratios (aPR) and 95% confidence intervals (95%CI). Among recruited participants, 174 (19,2%) were aged 15-17 yo and 734 (80,8%) 18-19 yo. The rate of PrEP initiation was 78.2% and 77.4% for 15-17 yo and 18-19 yo, respectively. Factors associated with PrEP initiation were: black or mixed race (aPR 2.31; 95%CI: 1.10-4.84) among the younger adolescents 15-17 yo; experienced violence and/or discrimination due to their sexual orientation or gender identity (aPR 1.21; 95%CI: 1.01-1.46); transactional sex (aPR 1.32; 95%CI: 1.04-1.68); and having had between 2 to 5 sexual partners in the previous three months (aPR 1.39; 95%CI: 1.15-1.68) among those 18-19 yo. Unprotected receptive anal intercourse in the previous six months was associated with PrEP initiation in both age groups (aPR 1.98; 95%CI: 1.02-3.85 and aPR 1.45; 95%CI: 1.19-1.76 among 15-17 yo and 18-19 yo, respectively). The biggest challenge to promoting PrEP use for aMSM and aTGW was in the first steps of the PrEP uptake process. Once they were linked to the PrEP clinic, initiation rates were high.

PrEP perception and experiences of adolescent and young gay and bisexual men: an intersectional analysis.

Studies indicate gaps in knowledge about the barriers to access and adhere to HIV pre-exposure prophylaxis (PrEP) in adolescents. In this article, we explore the perceptions and experiences of young gay, bisexual, and other men who have sex with men (YGBMSM) of the search, use and adherence to PrEP, considering their positions according to social markers of difference such as race/skin color, gender, sexuality, and social status. Intersectionality provides theoretical and methodological tools to interpret how the interlinking of these social markers of difference constitutes barriers and facilitators in the PrEP care continuum. The analyzed material is part of the PrEP1519 study and is comprised of 35 semi-structured interviews with YGBMSM from two Brazilian capitals (Salvador and São Paulo). The analyses suggest connections between social markers of difference, sexual cultures, and the social meanings of PrEP. Subjective, relational and symbolic aspects permeate the awareness of PrEP in the range of prevention tools. Willingness to use and adhere to PrEP is part of a learning process, production of meaning, and negotiation in the face of getting HIV and other sexually transmittable infections and the possibilities of pleasure. Thus, accessing and using PrEP makes several adolescents more informed about their vulnerabilities, leading to more informed decision-making. Interlinking the PrEP continuum of care among YGBMSM with the intersections of the social markers of difference may provide a conceptual framework to problematize the conditions and effects of implementing this prevention strategy, which could bring advantages to HIV prevention programs.

Between risk and pleasure: reflections on HIV prevention and care in the current context of PrEP use by men who have sex with men.

This study offers a set of reflections on the relationship between risk and pleasure in the field of HIV prevention and care, as it mediates new biomedical prevention/care technologies, particularly pre-exposure prophylaxis (PrEP), among men who have sex with men (MSM). We begin by investigating some studies about condomless sex between men, more specifically barebacking and PrEP use among young MSM. We base our analysis on the assumption that PrEP, as one of these new actants, has reconfigured the field of HIV prevention/care, especially in relation to the dimensions of risk and pleasure, with the potential to considerably reduce the chances of HIV infection while enabling maximum pleasure and a sense of greater safety and freedom. Despite this progress, we also problematize some of the ambivalences, tensions, and moral conflicts that still exist in the field of prevention, especially the potential for condomless sex. Finally, taking a praxiographic perspective on health care and foregrounding the situated practices of human and non-human actors/actants in interaction, we consider HIV/AIDS prevention as a more fluid, non-linear, erratic phenomenon that involves multiple types of knowledge, feelings, and participations, and is open to different kinds of experimentation. Besides a "logic of choice", we hold that health care is a permeable, continuous process that is enacted in situated practices and may produce different effects in response to a heterogeneous network of interactions.

Building bridges to care: the experience of peer navigation in enabling linkage to PrEP for adolescent men who have sex with men and transgender women.

Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others' care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant's needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users' specific characteristics and lived experiences.

Between risk and pleasure: reflections on HIV prevention and care in the current context of PrEP use by men who have sex with men / Entre o risco e o prazer: reflexões sobre a prevenção e tratamento do HIV no contexto atual do uso da PrEP por homens que fazem sexo com homens / Entre el riesgo y el placer: reflexiones sobre la prevención del VIH y la atención en salud en el contexto actual del uso de PrEP por hombres que tienen sexo con hombres

This study offers a set of reflections on the relationship between risk and pleasure in the field of HIV prevention and care, as it mediates new biomedical prevention/care technologies, particularly pre-exposure prophylaxis (PrEP), among men who have sex with men (MSM). We begin by investigating some studies about condomless sex between men, more specifically barebacking and PrEP use among young MSM. We base our analysis on the assumption that PrEP, as one of these new actants, has reconfigured the field of HIV prevention/care, especially in relation to the dimensions of risk and pleasure, with the potential to considerably reduce the chances of HIV infection while enabling maximum pleasure and a sense of greater safety and freedom. Despite this progress, we also problematize some of the ambivalences, tensions, and moral conflicts that still exist in the field of prevention, especially the potential for condomless sex. Finally, taking a praxiographic perspective on health care and foregrounding the situated practices of human and non-human actors/actants in interaction, we consider HIV/AIDS prevention as a more fluid, non-linear, erratic phenomenon that involves multiple types of knowledge, feelings, and participations, and is open to different kinds of experimentation. Besides a "logic of choice", we hold that health care is a permeable, continuous process that is enacted in situated practices and may produce different effects in response to a heterogeneous network of interactions.

O artigo fornece um conjunto de reflexões sobre a relação entre risco e prazer no campo da prevenção e tratamento do HIV, além de colocar na agenda a mediação das novas tecnologias biomédicas de prevenção e tratamento, particularmente a profilaxia pré-exposição (PrEP) entre homens que fazem sexo com homens (HSH). Começamos por rever alguns estudos sobre o sexo sem preservativo entre homens, mais especificamente o barebacking e o uso de PrEP por HSH jovens. Baseamos a análise na pressuposição de que a PrEP, enquanto uma das novas tecnologias, reconfigurou o campo da prevenção e tratamento do HIV, especialmente em relação às dimensões de risco e prazer, com o potencial para reduzir consideravelmente o risco de infecção pelo HIV ao mesmo tempo em que permite o prazer máximo e uma sensação de maior segurança e liberdade. Não obstante esses avanços, também problematizamos algumas das ambivalências, tensões e conflitos morais que persistem no campo da prevenção, principalmente o potencial para sexo sem preservativo. Finalmente, a partir de uma perspectiva praxiográfica sobre os cuidados de saúde e destacando as práticas de atores/actantes humanos e não humanos na interação, consideramos a prevenção do HIV/aids como um fenômeno mais fluido, não linear e errático, que envolve múltiplos tipos de conhecimento, sentimentos e participações, e que está aberto a diferentes tipos de experimentação. Além de uma "lógica de escolha", propomos que os cuidados de saúde constituem um processo permeável e contínuo que é instituído em práticas situadas e que podem produzir efeitos diferentes em resposta a uma rede heterogênea de interações.

Este trabajo ofrece un conjunto de reflexiones sobre la relación entre riesgo y placer, en el ámbito de la prevención y tratamiento del VIH, ya que debate el impacto de las nuevas tecnologías de prevención/cuidado biomédicas, particularmente la profilaxis de preexposición (PrEP) entre los hombres que tienen sexo con hombres (HSH). Empezamos investigando algunos estudios sobre el sexo sin condón entre hombres, más específicamente a pelo, y el uso de PrEP por parte de jóvenes HSH. Basamos nuestro análisis en la asunción de que la PrEP, uno de estos nuevos actantes, ha reconfigurado el campo de la prevención y cuidados del VIH, especialmente, en relación con las dimensiones de riesgo y placer, con el potencial de reducir considerablemente las posibilidades de infección por VIH, mientras que permite un máximo placer y sensación de una mayor seguridad y libertad. A pesar de este progreso, también problematizamos algunas de las ambivalencias, tensiones, y conflictos morales que todavía existen en el ámbito de la prevención, especialmente el potencial del sexo sin condón. Finalmente, teniendo en consideración una perspectiva praxiográfica sobre la atención en salud, y destacando las prácticas mencionadas de actores/actantes humanos y no humanos en la interacción, consideramos la prevención de VIH/SIDA como un fenómeno errático más fluido, no lineal, que implica múltiples tipos de conocimiento, sentimientos, y participaciones, y está abierto a diferentes tipos de experimentación. Además de la "lógica de elección", sostenemos que la atención sanitaria constituye un proceso permeable, continuo que se concreta en las prácticas mencionadas y puede producir diferentes efectos como respuesta a una heterogénea red de interacciones.

PrEP perception and experiences of adolescent and young gay and bisexual men: an intersectional analysis / Percepção e experiências da PrEP de homens gays e bissexuais jovens e adolescentes: uma análise interseccional / Percepción y experiencias de la PrEP de adolescentes y hombres jóvenes gais y bisexuales: análisis interseccional

Studies indicate gaps in knowledge about the barriers to access and adhere to HIV pre-exposure prophylaxis (PrEP) in adolescents. In this article, we explore the perceptions and experiences of young gay, bisexual, and other men who have sex with men (YGBMSM) of the search, use and adherence to PrEP, considering their positions according to social markers of difference such as race/skin color, gender, sexuality, and social status. Intersectionality provides theoretical and methodological tools to interpret how the interlinking of these social markers of difference constitutes barriers and facilitators in the PrEP care continuum. The analyzed material is part of the PrEP1519 study and is comprised of 35 semi-structured interviews with YGBMSM from two Brazilian capitals (Salvador and São Paulo). The analyses suggest connections between social markers of difference, sexual cultures, and the social meanings of PrEP. Subjective, relational and symbolic aspects permeate the awareness of PrEP in the range of prevention tools. Willingness to use and adhere to PrEP is part of a learning process, production of meaning, and negotiation in the face of getting HIV and other sexually transmittable infections and the possibilities of pleasure. Thus, accessing and using PrEP makes several adolescents more informed about their vulnerabilities, leading to more informed decision-making. Interlinking the PrEP continuum of care among YGBMSM with the intersections of the social markers of difference may provide a conceptual framework to problematize the conditions and effects of implementing this prevention strategy, which could bring advantages to HIV prevention programs.

Os estudos revelam lacunas no conhecimento sobre as barreiras ao acesso e à adesão à profilaxia pré-exposição do HIV (PrEP) em adolescentes. O artigo explora as percepções e experiências de jovens gays e bissexuais e outros homens que fazem sexo com homens (JGBHSH) na busca, uso e adesão à PrEP, considerando suas posições de acordo com marcadores sociais de diferença como raça/cor da pele, gênero, sexualidade e nível social. A interseccionalidade fornece suporte teórico e metodológico para interpretar de que maneira a interconexão desses marcadores sociais de diferença constitui barreiras e facilitadores no continuum de cuidados. O material empírico faz parte do estudo PrEP1519 e consiste em 35 entrevistas semiestruturadas com JGBHSH de duas capitais brasileiras (Salvador e São Paulo). As análises identificam conexões entre marcadores sociais de diferença, culturas sexuais e os sentidos sociais da PrEP. Aspectos estruturais subjetivos, relacionais e simbólicos permeiam o conhecimento da PrEP dentro do leque de possibilidades de prevenção. A disposição de usar e aderir à PrEP faz parte de um processo de aprendizagem, produção de sentido e negociação frente ao risco de HIV e de outras infecções sexualmente transmissíveis e as possibilidades para obter prazer. O conhecimento, acesso e uso da PrEP fazem com que muitos adolescentes estejam mais informados sobre suas vulnerabilidades, resultando em decisões com mais informação. A interconexão do continuum de cuidados em PrEP entre JGBHSH com as intersecções dos marcadores sociais de diferença pode fornecer um arcabouço conceitual para problematizar as condições e os efeitos da implementação dessa estratégia preventiva, com o potencial de trazer vantagens para os programas de prevenção do HIV.

Los estudios muestran que existen lagunas en el conocimiento sobre las barreras para acceder y adherirse a la profilaxis preexposición contra el VIH (PrEP) en el segmento adolescente. En este artículo, exploramos las percepciones y experiencias de jóvenes gays, bisexuales, y otros hombres que mantienen sexo con hombres (JGBHSH) sobre la búsqueda, uso y adherencia a la PrEP, considerando sus posiciones respecto a los marcadores sociales de las diferencias tales como: raza/color, género, sexualidad y estatus social. La interseccionalidad aporta apoyo teórico y metodológico para interpretar cómo la interrelación de estos marcadores sociales de la diferencia constituye barreras y facilitadores en el continuum del cuidado por PrEP. El material empírico analizado es parte del estudio PrEP1519 y comprende 35 entrevistas semiestructuradas con JGBHSH, procedentes de dos capitales de estados brasileños (Salvador y São Paulo). Los análisis apuntan conexiones entre marcadores sociales de la diferencia, culturas sexuales, y los significados sociales de la PrEP. Aspectos estructurales subjetivos, de relaciones y simbólicos permean la concientización de la PrEP en el rango de las posibilidades de prevención. La voluntad de utilizar y adherirse a la PrEP es parte de un proceso de aprendizaje, producción de significado, y negociación frente al riesgo de VIH y otras enfermedades de trasmisión sexual, así como la posibilidad de obtener placer. Tener conocimiento sobre el acceso y uso de la PrEP consigue que muchos adolescentes estén más informados sobre sus vulnerabilidades, logrando una toma de decisiones más informadas. Interrelacionar el continuum de la atención PrEP entre JGBHSH con las intersecciones de los marcadores sociales de diferencia tal vez pueda proveer un marco conceptual para problematizar las condiciones y efectos de implementar esta estrategia de prevención, lo que podría traer ventajas para los programas de prevención del VIH.

Building bridges to care: the experience of peer navigation in enabling linkage to PrEP for adolescent men who have sex with men and transgender women / Construindo pontes para o cuidado: a experiência da navegação de pares na habilitação do vínculo com a PrEP para homens adolescentes que fazem sexo com homens e mulheres transgêneros / Construcción de puentes hacia el cuidado: la experiencia de navegación entre pares para permitir la vinculación con la PrEP para hombres adolescentes que tienen relaciones sexuales con hombres y mujeres transgénero

Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others' care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant's needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users' specific characteristics and lived experiences.

Populações vulneráveis têm maior risco de contrair HIV/aids, especialmente homens adolescentes que fazem sexo com homens (AHSH) e mulheres transgêneros adolescentes e travestis. A profilaxia pré-exposição (PrEP) é um componente da combinação de prevenção do HIV e já está disponível para essas populações no Brasil. No entanto, garantir a captação da PrEP implica certos desafios, uma vez que o acesso e a vinculação aos serviços públicos de saúde relacionados a ela tem sido tradicionalmente marcados pela desigualdade e por outras barreiras. A navegação de pares pode ser uma forma de mediar o processo de vinculação pois envolve os pares que acompanham as rotinas de cuidado dos outros, estimulando dinamicamente a vinculação ao cuidado de acordo com as necessidades dos usuários e dos atores envolvidos em seus cotidianos. Este estudo propõe, portanto, analisar a vinculação ao cuidado com a PrEP mediada por navegação de pares para homens que fazem sexo com homens e mulheres transgênero de 15 a 19 anos do projeto PrEP1519 em Salvador, Bahia, Brasil. Foram analisados 15 cadernos/diários de campo escritos por 4 navegadores(as) de pares em abril a julho de 2019 assim como as transcrições de um grupo focal e 20 entrevistas semiestruturadas com adolescentes (17 HSH e três mulheres trans) de junho a dezembro de 2019. O vínculo entre navegador e participante é influenciado pela dinâmica emocional e características pessoais compartilhadas. É fluido e instável e necessita que as práticas de cuidado sejam moldadas para atender às necessidades de cada participante. Para que a navegação de pares seja adotada como estratégia de cuidado para prevenir e tratar infecções sexualmente transmissíveis, o método deve prever não apenas o aumento da vinculação ao cuidado mas também a sensibilidade às características específicas dos usuários e as suas experiências de vida.

Las poblaciones vulnerables tienen mayor riesgo de contraer el VIH/SIDA, especialmente los hombres adolescentes que tienen sexo con hombres (AHSH) y las mujeres adolescentes transgénero y travestis. La profilaxis previa a la exposición (PrEP) es un componente de la combinación de prevención del VIH y ahora está disponible para estas poblaciones en Brasil. Sin embargo, la obtención de la PrEP implica ciertos desafíos, ya que el acceso y los vínculos con los servicios de salud pública relacionados con la PrEP han sido marcados en general por la desigualdad y otras barreras. La navegación entre pares puede ser una forma de mediar el proceso de vinculación, puesto que involucra a los pares acompañando las rutinas de cuidado de los demás, estimulando dinámicamente el vínculo del cuidado según las necesidades de los usuarios y actores involucrados en su cotidiano. Este estudio propone analizar el vínculo del cuidado de la PrEP mediada por la navegación entre pares para hombres que tienen relaciones sexuales con hombres y mujeres transgénero, con edades entre los 15 y los 19 años y que participan en el proyecto PrEP1519 en Salvador, Bahia, Brasil. Cuatro navegantes pares analizaron 15 cuadernos/diarios de campo escritos entre abril y julio de 2019, así como las transcripciones de un grupo focal y 20 entrevistas semiestructuradas con adolescentes (17 HSH y tres mujeres trans) realizadas de junio a diciembre de 2019. El vínculo entre el navegador y el participante estuvo influenciado por dinámicas emocionales y características personales compartidas. Este vínculo es fluido e inestable, además requiere que las prácticas de cuidado sean capaces de satisfacer las necesidades de cada participante. Para que la navegación entre pares sea una estrategia de cuidado en la prevención y tratamiento de las infecciones de transmisión sexual, el método necesita proporcionar no solo una mayor vinculación con el cuidado, sino también una concientización de las características específicas de los usuarios y sus experiencias de vida.

Between risk and pleasure: reflections on HIV prevention and care in the current context of PrEP use by men who have sex with men / Entre o risco e o prazer: reflexões sobre a prevenção e tratamento do HIV no contexto atual do uso da PrEP por homens que fazem sexo com homens / Entre el riesgo y el placer: reflexiones sobre la prevención del VIH y la atención en salud en el contexto actual del uso de PrEP por hombres que tienen sexo con hombres

This study offers a set of reflections on the relationship between risk and pleasure in the field of HIV prevention and care, as it mediates new biomedical prevention/care technologies, particularly pre-exposure prophylaxis (PrEP), among men who have sex with men (MSM). We begin by investigating some studies about condomless sex between men, more specifically barebacking and PrEP use among young MSM. We base our analysis on the assumption that PrEP, as one of these new actants, has reconfigured the field of HIV prevention/care, especially in relation to the dimensions of risk and pleasure, with the potential to considerably reduce the chances of HIV infection while enabling maximum pleasure and a sense of greater safety and freedom. Despite this progress, we also problematize some of the ambivalences, tensions, and moral conflicts that still exist in the field of prevention, especially the potential for condomless sex. Finally, taking a praxiographic perspective on health care and foregrounding the situated practices of human and non-human actors/actants in interaction, we consider HIV/AIDS prevention as a more fluid, non-linear, erratic phenomenon that involves multiple types of knowledge, feelings, and participations, and is open to different kinds of experimentation. Besides a "logic of choice", we hold that health care is a permeable, continuous process that is enacted in situated practices and may produce different effects in response to a heterogeneous network of interactions.

O artigo fornece um conjunto de reflexões sobre a relação entre risco e prazer no campo da prevenção e tratamento do HIV, além de colocar na agenda a mediação das novas tecnologias biomédicas de prevenção e tratamento, particularmente a profilaxia pré-exposição (PrEP) entre homens que fazem sexo com homens (HSH). Começamos por rever alguns estudos sobre o sexo sem preservativo entre homens, mais especificamente o barebacking e o uso de PrEP por HSH jovens. Baseamos a análise na pressuposição de que a PrEP, enquanto uma das novas tecnologias, reconfigurou o campo da prevenção e tratamento do HIV, especialmente em relação às dimensões de risco e prazer, com o potencial para reduzir consideravelmente o risco de infecção pelo HIV ao mesmo tempo em que permite o prazer máximo e uma sensação de maior segurança e liberdade. Não obstante esses avanços, também problematizamos algumas das ambivalências, tensões e conflitos morais que persistem no campo da prevenção, principalmente o potencial para sexo sem preservativo. Finalmente, a partir de uma perspectiva praxiográfica sobre os cuidados de saúde e destacando as práticas de atores/actantes humanos e não humanos na interação, consideramos a prevenção do HIV/aids como um fenômeno mais fluido, não linear e errático, que envolve múltiplos tipos de conhecimento, sentimentos e participações, e que está aberto a diferentes tipos de experimentação. Além de uma "lógica de escolha", propomos que os cuidados de saúde constituem um processo permeável e contínuo que é instituído em práticas situadas e que podem produzir efeitos diferentes em resposta a uma rede heterogênea de interações.

Este trabajo ofrece un conjunto de reflexiones sobre la relación entre riesgo y placer, en el ámbito de la prevención y tratamiento del VIH, ya que debate el impacto de las nuevas tecnologías de prevención/cuidado biomédicas, particularmente la profilaxis de preexposición (PrEP) entre los hombres que tienen sexo con hombres (HSH). Empezamos investigando algunos estudios sobre el sexo sin condón entre hombres, más específicamente a pelo, y el uso de PrEP por parte de jóvenes HSH. Basamos nuestro análisis en la asunción de que la PrEP, uno de estos nuevos actantes, ha reconfigurado el campo de la prevención y cuidados del VIH, especialmente, en relación con las dimensiones de riesgo y placer, con el potencial de reducir considerablemente las posibilidades de infección por VIH, mientras que permite un máximo placer y sensación de una mayor seguridad y libertad. A pesar de este progreso, también problematizamos algunas de las ambivalencias, tensiones, y conflictos morales que todavía existen en el ámbito de la prevención, especialmente el potencial del sexo sin condón. Finalmente, teniendo en consideración una perspectiva praxiográfica sobre la atención en salud, y destacando las prácticas mencionadas de actores/actantes humanos y no humanos en la interacción, consideramos la prevención de VIH/SIDA como un fenómeno errático más fluido, no lineal, que implica múltiples tipos de conocimiento, sentimientos, y participaciones, y está abierto a diferentes tipos de experimentación. Además de la "lógica de elección", sostenemos que la atención sanitaria constituye un proceso permeable, continuo que se concreta en las prácticas mencionadas y puede producir diferentes efectos como respuesta a una heterogénea red de interacciones.

PrEP perception and experiences of adolescent and young gay and bisexual men: an intersectional analysis / Percepção e experiências da PrEP de homens gays e bissexuais jovens e adolescentes: uma análise interseccional / Percepción y experiencias de la PrEP de adolescentes y hombres jóvenes gais y bisexuales: análisis interseccional

Studies indicate gaps in knowledge about the barriers to access and adhere to HIV pre-exposure prophylaxis (PrEP) in adolescents. In this article, we explore the perceptions and experiences of young gay, bisexual, and other men who have sex with men (YGBMSM) of the search, use and adherence to PrEP, considering their positions according to social markers of difference such as race/skin color, gender, sexuality, and social status. Intersectionality provides theoretical and methodological tools to interpret how the interlinking of these social markers of difference constitutes barriers and facilitators in the PrEP care continuum. The analyzed material is part of the PrEP1519 study and is comprised of 35 semi-structured interviews with YGBMSM from two Brazilian capitals (Salvador and São Paulo). The analyses suggest connections between social markers of difference, sexual cultures, and the social meanings of PrEP. Subjective, relational and symbolic aspects permeate the awareness of PrEP in the range of prevention tools. Willingness to use and adhere to PrEP is part of a learning process, production of meaning, and negotiation in the face of getting HIV and other sexually transmittable infections and the possibilities of pleasure. Thus, accessing and using PrEP makes several adolescents more informed about their vulnerabilities, leading to more informed decision-making. Interlinking the PrEP continuum of care among YGBMSM with the intersections of the social markers of difference may provide a conceptual framework to problematize the conditions and effects of implementing this prevention strategy, which could bring advantages to HIV prevention programs.

Os estudos revelam lacunas no conhecimento sobre as barreiras ao acesso e à adesão à profilaxia pré-exposição do HIV (PrEP) em adolescentes. O artigo explora as percepções e experiências de jovens gays e bissexuais e outros homens que fazem sexo com homens (JGBHSH) na busca, uso e adesão à PrEP, considerando suas posições de acordo com marcadores sociais de diferença como raça/cor da pele, gênero, sexualidade e nível social. A interseccionalidade fornece suporte teórico e metodológico para interpretar de que maneira a interconexão desses marcadores sociais de diferença constitui barreiras e facilitadores no continuum de cuidados. O material empírico faz parte do estudo PrEP1519 e consiste em 35 entrevistas semiestruturadas com JGBHSH de duas capitais brasileiras (Salvador e São Paulo). As análises identificam conexões entre marcadores sociais de diferença, culturas sexuais e os sentidos sociais da PrEP. Aspectos estruturais subjetivos, relacionais e simbólicos permeiam o conhecimento da PrEP dentro do leque de possibilidades de prevenção. A disposição de usar e aderir à PrEP faz parte de um processo de aprendizagem, produção de sentido e negociação frente ao risco de HIV e de outras infecções sexualmente transmissíveis e as possibilidades para obter prazer. O conhecimento, acesso e uso da PrEP fazem com que muitos adolescentes estejam mais informados sobre suas vulnerabilidades, resultando em decisões com mais informação. A interconexão do continuum de cuidados em PrEP entre JGBHSH com as intersecções dos marcadores sociais de diferença pode fornecer um arcabouço conceitual para problematizar as condições e os efeitos da implementação dessa estratégia preventiva, com o potencial de trazer vantagens para os programas de prevenção do HIV.

Los estudios muestran que existen lagunas en el conocimiento sobre las barreras para acceder y adherirse a la profilaxis preexposición contra el VIH (PrEP) en el segmento adolescente. En este artículo, exploramos las percepciones y experiencias de jóvenes gays, bisexuales, y otros hombres que mantienen sexo con hombres (JGBHSH) sobre la búsqueda, uso y adherencia a la PrEP, considerando sus posiciones respecto a los marcadores sociales de las diferencias tales como: raza/color, género, sexualidad y estatus social. La interseccionalidad aporta apoyo teórico y metodológico para interpretar cómo la interrelación de estos marcadores sociales de la diferencia constituye barreras y facilitadores en el continuum del cuidado por PrEP. El material empírico analizado es parte del estudio PrEP1519 y comprende 35 entrevistas semiestructuradas con JGBHSH, procedentes de dos capitales de estados brasileños (Salvador y São Paulo). Los análisis apuntan conexiones entre marcadores sociales de la diferencia, culturas sexuales, y los significados sociales de la PrEP. Aspectos estructurales subjetivos, de relaciones y simbólicos permean la concientización de la PrEP en el rango de las posibilidades de prevención. La voluntad de utilizar y adherirse a la PrEP es parte de un proceso de aprendizaje, producción de significado, y negociación frente al riesgo de VIH y otras enfermedades de trasmisión sexual, así como la posibilidad de obtener placer. Tener conocimiento sobre el acceso y uso de la PrEP consigue que muchos adolescentes estén más informados sobre sus vulnerabilidades, logrando una toma de decisiones más informadas. Interrelacionar el continuum de la atención PrEP entre JGBHSH con las intersecciones de los marcadores sociales de diferencia tal vez pueda proveer un marco conceptual para problematizar las condiciones y efectos de implementar esta estrategia de prevención, lo que podría traer ventajas para los programas de prevención del VIH.

Building bridges to care: the experience of peer navigation in enabling linkage to PrEP for adolescent men who have sex with men and transgender women / Construindo pontes para o cuidado: a experiência da navegação de pares na habilitação do vínculo com a PrEP para homens adolescentes que fazem sexo com homens e mulheres transgêneros / Construcción de puentes hacia el cuidado: la experiencia de navegación entre pares para permitir la vinculación con la PrEP para hombres adolescentes que tienen relaciones sexuales con hombres y mujeres transgénero

Vulnerable populations are at increased risk for HIV/AIDS, especially adolescent men who have sex with men (AMSM) and adolescent travestis and transgender women (ATGW). Pre-exposure prophylaxis (PrEP) is one component of combination HIV prevention and is already available for these populations in Brazil. However, ensuring its uptake entails certain challenges since inequality and barriers have traditionally marked access and linkage to the related public health services. Peer navigation could be a way of mediating the linkage process because it involves peers keeping track of others' care schedules, dynamically fostering linkage to care according to the needs of users and the actors involved in their everyday care contexts. Therefore, this study proposes analyzing peer-navigator-mediated linkage to PrEP care for 15- to 19-year-old MSM and transgender women from the PrEP1519 project in Salvador, Bahia State, Brazil. In total, 15 field notebooks/diaries, written in April-July 2019, by four peer navigators were analyzed, as were the transcripts of one focal group and 20 semi-structured interviews with adolescents (17 MSM and three trans women) between June and December 2019. Linkage via peer navigator and participant is influenced by emotional dynamics and shared personal characteristics. It is fluid and unstable and calls for care practices to be shaped to meet each participant's needs. For peer navigation to be adopted as a care strategy for sexually transmitted infection prevention and treatment, it should envisage not only increased linkage to care but also sensitivity to service users' specific characteristics and lived experiences.

Populações vulneráveis têm maior risco de contrair HIV/aids, especialmente homens adolescentes que fazem sexo com homens (AHSH) e mulheres transgêneros adolescentes e travestis. A profilaxia pré-exposição (PrEP) é um componente da combinação de prevenção do HIV e já está disponível para essas populações no Brasil. No entanto, garantir a captação da PrEP implica certos desafios, uma vez que o acesso e a vinculação aos serviços públicos de saúde relacionados a ela tem sido tradicionalmente marcados pela desigualdade e por outras barreiras. A navegação de pares pode ser uma forma de mediar o processo de vinculação pois envolve os pares que acompanham as rotinas de cuidado dos outros, estimulando dinamicamente a vinculação ao cuidado de acordo com as necessidades dos usuários e dos atores envolvidos em seus cotidianos. Este estudo propõe, portanto, analisar a vinculação ao cuidado com a PrEP mediada por navegação de pares para homens que fazem sexo com homens e mulheres transgênero de 15 a 19 anos do projeto PrEP1519 em Salvador, Bahia, Brasil. Foram analisados 15 cadernos/diários de campo escritos por 4 navegadores(as) de pares em abril a julho de 2019 assim como as transcrições de um grupo focal e 20 entrevistas semiestruturadas com adolescentes (17 HSH e três mulheres trans) de junho a dezembro de 2019. O vínculo entre navegador e participante é influenciado pela dinâmica emocional e características pessoais compartilhadas. É fluido e instável e necessita que as práticas de cuidado sejam moldadas para atender às necessidades de cada participante. Para que a navegação de pares seja adotada como estratégia de cuidado para prevenir e tratar infecções sexualmente transmissíveis, o método deve prever não apenas o aumento da vinculação ao cuidado mas também a sensibilidade às características específicas dos usuários e as suas experiências de vida.

Las poblaciones vulnerables tienen mayor riesgo de contraer el VIH/SIDA, especialmente los hombres adolescentes que tienen sexo con hombres (AHSH) y las mujeres adolescentes transgénero y travestis. La profilaxis previa a la exposición (PrEP) es un componente de la combinación de prevención del VIH y ahora está disponible para estas poblaciones en Brasil. Sin embargo, la obtención de la PrEP implica ciertos desafíos, ya que el acceso y los vínculos con los servicios de salud pública relacionados con la PrEP han sido marcados en general por la desigualdad y otras barreras. La navegación entre pares puede ser una forma de mediar el proceso de vinculación, puesto que involucra a los pares acompañando las rutinas de cuidado de los demás, estimulando dinámicamente el vínculo del cuidado según las necesidades de los usuarios y actores involucrados en su cotidiano. Este estudio propone analizar el vínculo del cuidado de la PrEP mediada por la navegación entre pares para hombres que tienen relaciones sexuales con hombres y mujeres transgénero, con edades entre los 15 y los 19 años y que participan en el proyecto PrEP1519 en Salvador, Bahia, Brasil. Cuatro navegantes pares analizaron 15 cuadernos/diarios de campo escritos entre abril y julio de 2019, así como las transcripciones de un grupo focal y 20 entrevistas semiestructuradas con adolescentes (17 HSH y tres mujeres trans) realizadas de junio a diciembre de 2019. El vínculo entre el navegador y el participante estuvo influenciado por dinámicas emocionales y características personales compartidas. Este vínculo es fluido e inestable, además requiere que las prácticas de cuidado sean capaces de satisfacer las necesidades de cada participante. Para que la navegación entre pares sea una estrategia de cuidado en la prevención y tratamiento de las infecciones de transmisión sexual, el método necesita proporcionar no solo una mayor vinculación con el cuidado, sino también una concientización de las características específicas de los usuarios y sus experiencias de vida.

Magnetic Zinc Oxide/Manganese Ferrite Composite for Photodegradation of the Antibiotic Rifampicin.

In this study, a composite of zinc oxide and manganese ferrite was synthesized using co-precipitation and hydrothermal routes, to be used as photocatalysts in reactions with UV/Vis light source. The synthesized materials were characterized by FTIR, XRD, and SEM, where it was possible to verify the efficiency of the syntheses performed, through the identification of the resulting phases, the evaluation of the structural morphology of the particles, and the analysis of the detachments of the main vibration bonds present in these materials. The composite ZnO/MnFe2O4 was used in photodegradation reactions of the antibiotic rifampicin, with catalyst dosage of 0.20; 0.40, and 0.60 g and 10 ppm of rifampicin, reactions using pure ZnO as a catalyst were also performed as a comparative parameter of the influence of MnFe2O4 in this system. The composite ZnO/MnFe2O4 showed a maximum percentage of rifampicin decontamination of 94.72% and ZnO, 74.20%using 0.20 g of photocatalyst after 90 min, which indicates a positive influence on this process. The solution treated with ZnO/MnFe2O4 was subjected to magnetic field induction for attraction and consequently accelerated removal of the solids present, successfully, compacting for the application of ZnO/MnFe2O4 to be presented as a promising material for decontamination of emerging pollutants through photocatalytic reactions.

Playing 7 vs. 6 with an empty goal: Is it really an option for coaches? A comparative analysis between Portugal and the other teams during the Men's European Handball Championship 2020.

The dynamic of changes in the rules in team games materialize from research and debate between experts and coaches before being implemented by the International Federations. In Handball, the last changes occurred in 2016, and one of them was to substitute the goalkeeper with an additional field player allowing teams to play "empty goal" while using the additional field player. This study aimed to analyze and characterize the use of the 7 vs. 6 strategical-tactical option for the attack in the 2020 Men's European Championship. We also analyzed whether the game time and partial score influenced the use of 7 vs. 6 and its efficiency. Observational methodology and a mixed ad hoc instrument combining field format and category systems validated by experts were used. Data were taken from 28 matches involving teams in the first 12 positions in the 2020 Men's European Championship. The total number of offensive sequences in an organized attack method in 7 vs. 6 with an empty goal (n = 123) were analyzed. Sequential analysis techniques with lags, prospective and retrospective, and polar coordinate analysis were used. The results showed that (a) these solutions had poor efficiency, except for the Portuguese National Team; (b) teams using the 7 vs. 6 tactic option had no negative consequences or increased risk with the opponent response; (c) partial score influenced the decision to use 7 vs. 6 strategic option, and (d) game time was associated with 7 vs. 6 play options and detected patterns.

The Role of Outer Membrane Proteins in UPEC Antimicrobial Resistance: A Systematic Review.

Uropathogenic Escherichia coli (UPEC) are one of the most common agents of urinary tract infection. In the last decade, several UPEC strains have acquired antibiotic resistance mechanisms and some have become resistant to all classes of antibiotics. UPEC outer membrane proteins (OMPs) seem to have a decisive role not only in the processes of invasion and colonization of the bladder mucosa, but also in mechanisms of drug resistance, by which bacteria avoid killing by antimicrobial molecules. This systematic review was performed according to the PRISMA guidelines, aiming to characterize UPEC OMPs and identify their potential role in antimicrobial resistance. The search was limited to studies in English published during the last decade. Twenty-nine studies were included for revision and, among the 76 proteins identified, seven were associated with antibiotic resistance. Indeed, OmpC was associated with ß-lactams resistance and OmpF with ß-lactams and fluoroquinolone resistance. In turn, TolC, OmpX, YddB, TosA and murein lipoprotein (Lpp) were associated with fluoroquinolones, enrofloxacin, novobiocin, ß-lactams and globomycin resistances, respectively. The clinical implications of UPEC resistance to antimicrobial agents in both veterinary and human medicine must propel the implementation of new strategies of administration of antimicrobial agents, while also promoting the development of improved antimicrobials, protective vaccines and specific inhibitors of virulence and resistance factors.

First evaluation of the anxiolytic-like effects of a bromazepam­palladium complex in mice.

A significant fraction of patients are affected by persistent fear and anxiety. Currently, there are several anxiolytic drug options, however their clinical outcomes do not fully manage the symptoms. Here, we evaluated the effects of a bromazepam­palladium derivative [2-{(7-bromo-2-oxo-1,3-dihydro-2H-1,4-benzodiazepin-5-il)pyridinyl-κ2-N,N}chloropalladium(II)], [(BMZ)PdCl2], on fear/anxiety and memory-related behavior in mice. For this, female Swiss mice were treated intraperitoneally (i.p.) with saline (NaCl 0.9%) or [(BMZ)PdCl2] (0.5, 5.0, or 50 µg/kg). After 30 min, different tests were performed to evaluate anxiety, locomotion, and memory. We also evaluated the acute toxicity of [(BMZ)PdCl2] using a cell viability assay (neutral red uptake assay), and whether the drugs mechanism of action involves the γ-aminobutyric acid type A (GABAA) receptor complex by pre-treating animals with flumazenil (1.0 mg/kg, i.p., a competitive antagonist of GABAA-binding site). Our results demonstrate that [(BMZ)PdCl2] induces an anxiolytic-like phenotype in the elevated plus-maze test and that this effect can be blocked by flumazenil. Furthermore, there were no behavioral alterations induced by [(BMZ)PdCl2], as evaluated in the light-dark box, open field, and step-down passive avoidance tests. In the acute toxicity assay, [(BMZ)PdCl2] presented IC50 and LD50 values of 218 ± 60 µg/mL and 780 ± 80 mg/kg, respectively, and GSH category 4. Taken together, our results show that the anxiolytic-like effect of acute treatment with [(BMZ)PdCl2] occurs through the modulation of the benzodiazepine site in the GABAA receptor complex. Moreover, we show indications that [(BMZ)PdCl2] does not promote sedation and amnesia and presents the same toxicity as the bromazepam prototype.

Sugammadex administration in pregnant patients undergoing non-obstetric surgery: a case series.

The use of sugammadex for reversal of rocuronium-induced neuromuscular blockade after caesarean section is nowadays common practice, but concerns exist about its use in pregnant women undergoing non-obstetric surgery. We report six cases of pregnant women submitted to general anesthesia for non-obstetric surgery in which neuromuscular blockade was reversed with sugammadex. We followed the outcome of both mother and baby during and after delivery. Sugammadex seemed to be a safe option for both mother and baby but more reports are necessary to fill the evidence gap and increase the global knowledge about its safety in this special group of patients.

Synthesis of novel thiazolidinic-phthalimide derivatives evaluated as new multi-target antiepileptic agents.

Epilepsy is a disease that affects millions of people around the globe and has a multifactorial cause. Inflammation is a process that can be involved in the development of seizures. Thus, the present study proposed the design and synthesis of new candidates for antiepileptic drugs that would also control the inflammatory process. Nine new derivatives of the substituted thiazophthalimide hybrid core were obtained with satisfactory purity ≥99% and yields between 27% and 87%. All compounds showed cell viability values greater than 90% in the culture of PBMC cells from healthy volunteers and, therefore, were not considered cytotoxic. These compounds modulated proinflammatory cytokines IFN-y and IL-17A and can mitigate inflammation. Acute toxicity studies of compound 7i in an animal model indicated that the compound has low toxicity and an LD50 greater than 2 g/kg in healthy adult rats. The same compound did not show positive results for anticonvulsant activity through the PTZ test. However, 7i demonstrates the interaction with the target GABA-A receptor in silico, indicating a possible activity as an agonist of that receptor. Thus, further studies are needed to investigate the anticonvulsant activity, in particular, using models in which the inflammatory process triggers epileptic seizures.