Knowledge of the workers of the construction industry about acquired immunodeficiency syndrome and associated factors.

BACKGROUND: Sexually Transmitted Infections (STIs), such as Human Immunodeficiency Virus (HIV) transmitted by biological, socioeconomic and cultural factors that increase the vulnerability of certain population groups such as civil construction workers. OBJECTIVE: To evaluate the knowledge of workers in the construction industry about infection by HIV and associated factors. METHODS: A cross-sectional, analytical study was conducted, including 381 construction workers, in the cities of João Pessoa, Cabedelo, and Santa Rita, in the State of Paraíba, Brazil, performed through interviews, using a data collection instrument with social demographic variables and the HIV Knowledge Questionnaire. Data were analyzed using descriptive measures, and for comparison between the categories the Kruskal-Wallis test was used, with margin of error of 5% . RESULTS: A predominance of male workers was observed (97.4%) among 381 workers; aged 30-39 (34.1%); married (81.4%); with up to eight years of education (66.6%); family income of up to 2x the minimum wage (52.8%) and coming from the country (43.8%). The average of correct responses was 63.3%, with higher indices (70.0%) related to transmission and forms of prevention. There were higher percentages of hits among those who had studied for 12 years or more. Workers from the capital of Paraíba presented a higher number of correct responses (67.44%). CONCLUSIONS: There is a low index of knowledge of construction workers about HIV, highlighting their consequent vulnerability to acquiring this infection.

Screening of variables affecting the selective leaching of valuable metals from waste motherboards' PCBs.

The presence of valuable and hazardous metals in waste printed circuit boards, especially, motherboards, makes their recovery necessary as implies great economic and environmental advantages and develops urban mining processes. Hence, this research is focused on the selective leaching of Cu, Pb, and Sn as base metals using nitric acid and hydrochloric acid and Au, Ag, and Pd as precious metals using thiourea and sodium thiosulfate from waste motherboards' PCBs in a sequential eco-friendly two-stage process. Previously, thiourea and sodium thiosulfate were used as leaching agents to investigate their applicability for the leaching of metals from PCBs in a single-stage process. Screening experimental design was applied to screen the variables affecting the leaching process in order to evaluate their impact on the recovery of metals and select the significant factors. The results demonstrated that base and precious metals can be leached appropriately in two consecutive stages compared to a single-stage process. Nitric acid was found to be a much more efficient agent to leach Cu and Pb in comparison with hydrochloric acid which was more suitable for the leaching of Sn. In the case of precious metals, higher amounts of Au were leached using thiourea, whereas sodium thiosulfate was able to leach more Pd. Roughly similar results were obtained for the leaching of Ag using these leaching agents. Nitric acid concentration, average particle size, temperature, and leaching time were found to be significant to maximize the leaching of Cu and Pb and minimize that for Au, Ag, and Pd in the first stage. Initial pH was the only variable influencing the second stage, in particular, Au leaching by thiourea.

Sexual behavior of university students in the context of the COVID-19 pandemic: a mixed-methods study.

OBJECTIVE: To analyze the sexual behaviors of university students during the COVID-19 pandemic. METHOD: Mixed study, carried out on four campuses of a public university in Paraíba, Brazil, between March 2021 and April 2022. The research followed ethical precepts. RESULTS: 404 university students were included, with an average age of 23.7 years, predominantly female, brown and single. The prevalence of self-reported sexually transmitted infections was 7.9%. Male students were more likely to engage in risky sexual behavior. Multiple logistic regression indicated that university students aged 25 or over who had engaged in casual sex in the last 12 months and had received or paid for sex were more likely to have sexually transmitted infections. The content analysis showed that social isolation was reflected in reduced consumption of alcohol and other substances, reduced sexual practices, increased use of social networks, as well as low adherence to condoms. CONCLUSION: Physical distancing has an impact on the sexual behavior of university students, as well as on the consumption of alcohol and other substances.

S/N/O-Enriched Carbons from Polyacrylonitrile-Based Block Copolymers for Selective Separation of Gas Streams.

A series of polyacrylonitrile (PAN)-based block copolymers with poly(methyl methacrylate) (PMMA) as sacrificial bock were synthesized by atom transfer radical polymerization and used as precursors for the synthesis of porous carbons. The carbons enriched with O- and S-containing groups, introduced by controlled oxidation and sulfuration, respectively, were characterized by Raman spectroscopy, scanning electron microscopy, and X-ray photoelectron spectrometry, and their surface textural properties were measured by a volumetric analyzer. We observed that the presence of sulfur tends to modify the structure of the carbons, from microporous to mesoporous, while the use of copolymers with a range of molar composition PAN/PMMA between 10/90 and 47/53 allows the obtainment of carbons with different degrees of porosity. The amount of sacrificial block only affects the morphology of carbons stabilized in oxygen, inducing their nanostructuration, but has no effect on their chemical composition. We also demonstrated their suitability for separating a typical N2/CO2 post-combustion stream.

Chemical conjugation of aptamer-sphingomyelin nanosystems and their potential as inhibitors of tumour cell proliferation in breast cancer cells.

Breast cancer is a complex and heterogeneous disease with a high mortality rate due to non-specific cytotoxicity, low intratumoral accumulation and drug resistance associated with the ineffectiveness of chemotherapy. In recent years, all efforts have been focused on finding new markers and therapeutic targets, protein kinase MNK1b being a promising candidate. Recently, an aptamer known as apMNK2F showed a highly specific interaction with this protein kinase, leading to a significant reduction in tumour cell proliferation, migration and colony formation. However, as aptamers are unable to penetrate the cell membrane and reach the target, these small biomolecules need to be conjugated to suitable vectors that can transport and protect them inside the cells. In this work, covalent conjugation between biocompatible and non-harmful nanoemulsions of vitamin E and sphingomyelin and the aptamer was performed to facilitate intracellular delivery of the therapeutic aptamer apMNK2F. All strategies employed were based on 2-step bioconjugation and optimized to get the simplest and most reproducible vehicle with the highest association efficiency (about 70% in all cases). The ability of the nanosystems to successfully deliver the conjugated therapeutic aptamer was demonstrated and compared to other commercial transfection agents such as Lipofectamine 2000, leading to an effective decrease of breast cancer cell proliferation in the MDA-MB-231 cell line. The proliferation inhibition of the aptamer nanoconjugates compared to the non-conjugated aptamer provides evidence that the antitumoral capacity derived from kinase interaction is improved in a dose-dependent manner. Furthermore, various experiments including cell migration and colony formation assays, along with apoptosis induction experiments, emphasize the significant antitumoral potential. Overall, the obtained results indicate that the developed formulation could be a promising therapy for the treatment of breast cancer.

(Dys)functional insights into nucleic acids and RNA-binding proteins modulation of the prion protein and α-synuclein phase separation.

Prion diseases are prototype of infectious diseases transmitted by a protein, the prion protein (PrP), and are still not understandable at the molecular level. Heterogenous species of aggregated PrP can be generated from its monomer. α-synuclein (αSyn), related to Parkinson's disease, has also shown a prion-like pathogenic character, and likewise PrP interacts with nucleic acids (NAs), which in turn modulate their aggregation. Recently, our group and others have characterized that NAs and/or RNA-binding proteins (RBPs) modulate recombinant PrP and/or αSyn condensates formation, and uncontrolled condensation might precede pathological aggregation. Tackling abnormal phase separation of neurodegenerative disease-related proteins has been proposed as a promising therapeutic target. Therefore, understanding the mechanism by which polyanions, like NAs, modulate phase transitions intracellularly, is key to assess their role on toxicity promotion and neuronal death. Herein we discuss data on the nucleic acids binding properties and phase separation ability of PrP and αSyn with a special focus on their modulation by NAs and RBPs. Furthermore, we provide insights into condensation of PrP and/or αSyn in the light of non-trivial subcellular locations such as the nuclear and cytosolic environments.

Intermediate Molecular Phenotypes to Identify Genetic Markers of Anthracycline-Induced Cardiotoxicity Risk.

Cardiotoxicity due to anthracyclines (CDA) affects cancer patients, but we cannot predict who may suffer from this complication. CDA is a complex trait with a polygenic component that is mainly unidentified. We propose that levels of intermediate molecular phenotypes (IMPs) in the myocardium associated with histopathological damage could explain CDA susceptibility, so variants of genes encoding these IMPs could identify patients susceptible to this complication. Thus, a genetically heterogeneous cohort of mice (n = 165) generated by backcrossing were treated with doxorubicin and docetaxel. We quantified heart fibrosis using an Ariol slide scanner and intramyocardial levels of IMPs using multiplex bead arrays and QPCR. We identified quantitative trait loci linked to IMPs (ipQTLs) and cdaQTLs via linkage analysis. In three cancer patient cohorts, CDA was quantified using echocardiography or Cardiac Magnetic Resonance. CDA behaves as a complex trait in the mouse cohort. IMP levels in the myocardium were associated with CDA. ipQTLs integrated into genetic models with cdaQTLs account for more CDA phenotypic variation than that explained by cda-QTLs alone. Allelic forms of genes encoding IMPs associated with CDA in mice, including AKT1, MAPK14, MAPK8, STAT3, CAS3, and TP53, are genetic determinants of CDA in patients. Two genetic risk scores for pediatric patients (n = 71) and women with breast cancer (n = 420) were generated using machine-learning Least Absolute Shrinkage and Selection Operator (LASSO) regression. Thus, IMPs associated with heart damage identify genetic markers of CDA risk, thereby allowing more personalized patient management.

Response to Vaccine-Derived Polioviruses Detected through Environmental Surveillance, Guatemala, 2019.

Guatemala implemented wastewater-based poliovirus surveillance in 2018, and three genetically unrelated vaccine-derived polioviruses (VDPVs) were detected in 2019. The Ministry of Health (MoH) response included event investigation through institutional and community retrospective case searches for acute flaccid paralysis (AFP) during 2018-2020 and a bivalent oral polio/measles, mumps, and rubella vaccination campaign in September 2019. This response was reviewed by an international expert team in July 2021. During the campaign, 93% of children 6 months <7 years of age received a polio-containing vaccine dose. No AFP cases were detected in the community search; institutional retrospective searches found 37% of unreported AFP cases in 2018‒2020. No additional VDPV was isolated from wastewater. No evidence of circulating VDPV was found; the 3 isolated VDPVs were classified as ambiguous VDPVs by the international team of experts. These detections highlight risk for poliomyelitis reemergence in countries with low polio vaccine coverage.

Association Between Sense of Coherence and Tobacco Use Among Brazilian Adolescent Students.

Background: Investigating tobacco use and associated factors is essential to set priorities and health promotion strategies among adolescents. Several studies examined the relationship between this behavior and the psychosocial salutogenic construct Sense of Coherence (SOC), but the evidence is limited to adolescents in high-income countries. This study aimed to analyze the association between tobacco use and SOC among Brazilian adolescent students. Methods: A cross-sectional school-based survey was conducted in 2018. Dependent variables were categorical binary (Yes/No): (1) Smoking experimentation (at least one puff in a lifetime); (2) Current smoking (at least one cigarette smoked in the last 30 days); (3) Daily cigarette smoking; and (4) Experimentation with hookah and/or other tobacco products (at least once in a lifetime). Independent variable SOC was assessed with the SOC-13 item scale. Independent-samples t-Test and Logistic regression were used in the statistical analyses. Potential confounders were identified using a Directed Acyclic Graph. Results: Participants were 3034 adolescents aged 13-19. The mean SOC scores were higher among adolescents who answered no to each of the dependent variables than among those who answered yes (p < .05). In the regression analysis, those with higher SOC scores were less likely to report smoking experimentation, current use, daily use, and experimentation with hookah and/or other tobacco products, than those with lower SOC scores. The associations remained after controlling for sociodemographic and/or social-environmental factors. Conclusion: An inverse relationship between SOC and tobacco use was observed among Brazilian adolescent students.

Intersectoral Collaboration to Promote Child Development: The Contributions of the Actor-Network Theory.

An integrated intersectoral care model promises to meet complex needs to promote early child development and address health determinants and inequities. Nevertheless, there is a lack of understanding of actors' interactions in producing intersectoral collaboration networks. The present study aimed to analyze the intersectoral collaboration in the social protection network involved in promoting early child growth and development in Brazilian municipalities. Underpinned by the tenets of actor-network theory, a case study was conducted with data produced from an educational intervention, entitled "Projeto Nascente." Through document analysis (ecomaps), participant observation (in Projeto Nascente seminars), and interviews (with municipal management representatives), our study explored and captured links among actors; controversies and resolution mechanisms; the presence of mediators and intermediaries; and an alignment of actors, resources, and support. The qualitative analysis of these materials identified three main themes: (1) agency fragility for intersectoral collaboration, (2) attempt to form networks, and (3) incorporation of fields of possibilities. Our findings revealed that intersectoral collaboration for promoting child growth and development is virtually non-existent or fragile, and local potential is missed or underused. These results emphasized the scarcity of action by mediators and intermediaries to promote enrollment processes to intersectoral collaboration. Likewise, existing controversies were not used as a mechanism for triggering changes. Our research supports the need to mobilize actors, resources, management, and communication tools that promote processes of interessement and enrollment in favor of intersectoral collaboration policies and practices for child development.

Immune response to co-administration of measles, mumps, and rubella (MMR), and yellow fever vaccines: a randomized non-inferiority trial among one-year-old children in Argentina.

BACKGROUND: In yellow fever (YF) endemic areas, measles, mumps, and rubella (MMR), and YF vaccines are often co-administered in childhood vaccination schedules. Because these are live vaccines, we assessed potential immune interference that could result from co-administration. METHODS: We conducted an open-label, randomized non-inferiority trial among healthy 1-year-olds in Misiones Province, Argentina. Children were randomized to one of three groups (1:1:1): Co-administration of MMR and YF vaccines (MMR1YF1), MMR followed by YF vaccine four weeks later (MMR1YF2), or YF followed by MMR vaccine four weeks later (YF1MMR2). Blood samples obtained pre-vaccination and 28 days post-vaccination were tested for immunoglobulin G antibodies against measles, mumps, and rubella, and for YF virus-specific neutralizing antibodies. Non-inferiority in seroconversion was assessed using a -5% non-inferiority margin. Antibody concentrations were compared with Kruskal-Wallis tests. RESULTS: Of 851 randomized children, 738 were correctly vaccinated, had ≥ 1 follow-up sample, and were included in the intention-to-treat population. Non-inferior seroconversion was observed for all antigens (measles seroconversion: 97.9% in the MMR1YF1 group versus 96.3% in the MMR1YF2 group, a difference of 1.6% [90% CI -1.5, 4.7]; rubella: 97.9% MMR1YF1 versus 94.7% MMR1YF2, a difference of 3.3% [-0.1, 6.7]; mumps: 96.7% MMR1YF1 versus 97.9% MMR1YF2, a difference of -1.3% [-4.1, 1.5]; and YF: 96.3% MMR1YF1 versus 97.5% YF1MMR2, a difference of -1.2% [-4.2, 1.7]). Rubella antibody concentrations and YF titers were significantly lower following co-administration; measles and mumps concentrations were not impacted. CONCLUSION: Effective seroconversion was achieved and was not impacted by the co-administration, although antibody levels for two antigens were lower. The impact of lower antibody levels needs to be weighed against missed opportunities for vaccination to determine optimal timing for MMR and YF vaccine administration. TRIAL REGISTRATION: The study was retrospectively registered in ClinicalTrials.gov (NCT03368495) on 11/12/2017.

Exosome-like systems: Nanotechnology to overcome challenges for targeted cancer therapies.

Exosomes are natural extracellular nanovesicles (30-150 nm in diameter) with the ability to interact with and be taken up by specific cells. They are being explored as delivery systems and imaging agents for biomedical purposes owing to their biocompatibility, biostability in extracellular biofluids, and organotropic properties. However, their usefulness, efficacy, and clinical application are limited by certain critical parameters, including the need for more robust and reproducible manufacturing processes, characterization, quality control assessment, and clinical studies. Recently, exosome-like systems have emerged as alternatives for overcoming the limitations of natural exosomes. These systems are based on surface engineering approaches and nanoscale platforms that offer a deeper understanding and allow for more exhaustive standardization compared with natural exosomes. By combining the latest knowledge related to exosome research with the most promising developments in nanotechnology, exosome-like systems can be developed as a competitive approach for innovative targeted anti-cancer therapies. This review aims to provide a critical overview of the latest advances in designing and testing innovative exosome-like systems and the most promising modalities that can be translated into the clinic. Future perspectives and challenges in this field are discussed.

The NIH-led research response to COVID-19.

Investment, collaboration, and coordination have been key.

Prevalence of atherogenic dyslipidemia, related factors and level of lipid control in the general population of Galicia. GALIPEMIAS study. / Prevalencia de dislipemia aterogénica, factores relacionados y grado de control lipídico en la población general de Galicia. Estudio GALIPEMIAS.

OBJECTIVES: GALIPEMIAS is a study designed to establish the prevalence of familial dyslipidemia in the general population of Galicia. The objective of the present study was to assess the prevalence of atherogenic dyslipidemia (AD), its relationship with other cardiovascular risk (CVR) factors, and the degree of lipid control. METHODS: Cross-sectional study carried out in the general population over 18 years of age residing in Galicia and with a health card from the Galician Health Service (N=1,000). Selection of the sample by means of random sampling by conglomerates. The AD prevalence adjusted for age and sex and the related variables were analyzed. RESULTS: The prevalence of AD adjusted for age and sex was 6.6% (95% CI: 5.0-8.3%). Arterial hypertension, altered basal glycemia, type 2 diabetes mellitus and cardiovascular disease were more frequent in subjects with AD than in the rest of the population. 47.5% of the subjects with AD had a high or very high CVR. Lipid-lowering drugs were received by 38.9% (30.5% statins) of the participants with AD (46.1% of those with high and 71.4% of those with very high CVR). 25.4% of the subjects with AD had target LDL-c levels, all of them with low or moderate CVR. CONCLUSIONS: The prevalence of AD in the general adult population of Galicia is not negligible, and it was related to several CVR factors and cardiovascular disease. Despite this, this lipid alteration was underdiagnosed and undertreated.

Intermediate molecular phenotypes to identify genetic markers of anthracycline-induced cardiotoxicity risk.

Cardiotoxicity due to anthracyclines (CDA) affects cancer patients, but we cannot predict who may suffer from this complication. CDA is a complex disease whose polygenic component is mainly unidentified. We propose that levels of intermediate molecular phenotypes in the myocardium associated with histopathological damage could explain CDA susceptibility; so that variants of genes encoding these intermediate molecular phenotypes could identify patients susceptible to this complication. A genetically heterogeneous cohort of mice generated by backcrossing (N = 165) was treated with doxorubicin and docetaxel. Cardiac histopathological damage was measured by fibrosis and cardiomyocyte size by an Ariol slide scanner. We determine intramyocardial levels of intermediate molecular phenotypes of CDA associated with histopathological damage and quantitative trait loci (ipQTLs) linked to them. These ipQTLs seem to contribute to the missing heritability of CDA because they improve the heritability explained by QTL directly linked to CDA (cda-QTLs) through genetic models. Genes encoding these molecular subphenotypes were evaluated as genetic markers of CDA in three cancer patient cohorts (N = 517) whose cardiac damage was quantified by echocardiography or Cardiac Magnetic Resonance. Many SNPs associated with CDA were found using genetic models. LASSO multivariate regression identified two risk score models, one for pediatric cancer patients and the other for women with breast cancer. Molecular intermediate phenotypes associated with heart damage can identify genetic markers of CDA risk, thereby allowing a more personalized patient management. A similar strategy could be applied to identify genetic markers of other complex trait diseases.

Comprometimento da saúde no pós-alta de pacientes tratados por hanseníase e fatores relacionados: revisão de escopo / Post-discharge health impairment of patients treated for leprosy and related factors: scope review / Deterioro de la salud tras el alta en pacientes tratados por lepra y factores re-lacionados: una revisión general

Objetivo: mapear evidências na literatura científica sobre o comprometimento de saúde no pós-alta de pacientes tratados por Hanseníase e fatores relacionados. Materiais e Método: revisão de escopo realizada a partir das bases de dados CINAHL, LILACS, MEDLINE, PUBMED, SCOPUS e Web of Science em março de 2021, norteados pela estratégia mnemônica que auxilia na identificação do Problema, Conceito e Contexto propostos pelo Instituto Joanna Briggs, sistematizados por meio do fluxograma PRISMA-ScR e registrados na Open Science Framework (osf.io/vmdc6). Foram incluídos estudos sobre a temática publicados até fevereiro de 2021 no cenário nacional e internacional. Resultados: dos dez artigos incluídos na amostra final, nove evidenciaram algum grau de comprometimento funcional, demonstrando fragilidades no acompanhamento desde o diagnóstico até o período pós-alta. Conclusões: evidencia-se acometimentos com maior frequência sobretudo de ordem física, que impactam diretamente a funcionalidade nas atividades de vida diária e social dessas pessoas. As fragilidades no monitoramento pós-alta foram relacionadas ao déficit de profissionais capacitados, ao desconhecimento de técnicas de avaliação e classificação do grau de incapacidade, à carência na oferta de educação em saúde, à dificuldade de acesso aos serviços de saúde, ao atraso no tratamento dos episódios reacionais e reabilitação biopsicossocial e à ausência da sistematização do cuidado.(AU)

Objective: to map evidence in the scientific literature on the post-discharge health impairment of patients treated for leprosy and related factors. Materials and Method: scope review carried out from the CINAHL, LILACS, MEDLINE, PUBMED, SCOPUS and Web of Science databases in March 2021, guided by the mnemonic strategy that helps to identify the Problem, Concept and Context proposed by the Joanna Institute Briggs, systematized through the PRISMA-ScR flowchart, and registered in the Open Science Framework (osf.io/vmdc6). Studies on the subject published until February 2021 in the national and international scenario were included. Results: of the ten articles included in the final sample, nine showed some degree of functional impairment, demonstrating weaknesses in follow-up from diagnosis to the post-discharge period. Conclusions: there is evidence of more frequent involvement, especially of a physical nature, which directly impact the functionality of these people's daily and social activities. Weaknesses in post-discharge monitoring were related to the lack of trained professionals, lack of knowledge of assessment techniques and classification of the degree of disability, lack of health education provision, difficulty in accessing health services, delay in treatment of reactional episodes and biopsychosocial rehabilitation and the absence of systematization of care.(AU)

Objetivo: mapear en la literatura científica las evidencias sobre el deterioro de la salud post-alta en pacientes tratados por lepra y factores relacionados. Materiales y Métodos: revisión de alcance realizada a partir de las bases de datos CINAHL, LILACS, MEDLINE, PUBMED, SCOPUS y Web of Science en marzo de 2021, guiada por la estrategia mnemotécnica que ayu-da a identificar el Problema, Concepto y Contexto propuesta por el Instituto Joanna Briggs, sistematizada a través del flujograma PRISMA-ScR y registrada en el Open Science Framework (osf.io/vmdc6). Fueron incluidos estudios sobre el tema, publicados hasta febrero de 2021, en el escenario nacional e internacional. Resultados: de los diez artículos incluidos en la muestra final, nueve mostraron algún grado de deterioro funcional, demostrando debilidades en el seguimiento desde el diagnóstico hasta el período posterior al alta. Conclusiones: se evidencia con mayor frecuencia ataques sobre todo de orden físico que impactan directamente en la funcionalidad en las actividades de la vida diaria y social de las personas. Fragilidades en el seguimiento postoperatorio relacionadas con el déficit de profesionales capacitados, el desco-nocimiento de las técnicas de evaluación y clasificación del grado de incapacidad, la carencia en la oferta de educación en salud, la dificultad de acceso a los servicios de salud, el retraso en el tratamiento de los episodios reaccionarios y la rehabilitación biopsicosocial y la ausencia de...(AU)

Phase separation of the mammalian prion protein: Physiological and pathological perspectives.

Abnormal phase transitions have been implicated in the occurrence of proteinopathies. Disordered proteins with nucleic acidbinding ability drive the formation of reversible micron-sized condensates capable of controlling nucleic acid processing/transport. This mechanism, achieved via liquid-liquid phase separation (LLPS), underlies the formation of long-studied membraneless organelles (e.g., nucleolus) and various transient condensates formed by driver proteins. The prion protein (PrP) is not a classical nucleic acid-binding protein. However, it binds nucleic acids with high affinity, undergoes nucleocytoplasmic shuttling, contains a long intrinsically disordered region rich in glycines and evenly spaced aromatic residues, among other biochemical/biophysical properties of bona fide drivers of phase transitions. Because of this, our group and others have characterized LLPS of recombinant PrP. In vitro phase separation of PrP is modulated by nucleic acid aptamers, and depending on the aptamer conformation, the liquid droplets evolve to solid-like species. Herein, we discuss recent studies and previous evidence supporting PrP phase transitions. We focus on the central role of LLPS related to PrP physiology and pathology, with a special emphasis on the interaction of PrP with different ligands, such as proteins and nucleic acids, which can play a role in prion disease pathogenesis. Finally, we comment on therapeutic strategies directed at the non-functional phase separation that could potentially tackle prion diseases or other protein misfolding disorders.

Repertórios interculturais de mulheres sobre concepções de HIV/AIDS em cenário interétnico / Repertorios interculturales de mujeres acerca de concepciones de VIH/SIDA en un escenario interétnico / Intercultural repertories of women on HIV/AIDS conceptions in na interethnic scenario

Resumo Objetivo analisar, sob a perspectiva da interculturalidade, os significados atribuídos ao HIV/AIDS que compõem os repertórios de mulheres em situação interétnica. Método estudo descritivo, retrospectivo, desenvolvido com base no banco de dados de pesquisa primária. A amostra foi constituída por 642 registros, provenientes da aplicação do Teste de Associação Livre de Palavras, com 386 mulheres não indígenas e 256 mulheres indígenas procedentes do município de Rio Tinto-PB. As respostas apreendidas do estímulo indutor AIDS foram categorizadas segundo grupo de pertencimento, idade e conjugalidade. Os dados foram processados pelo software IraMuTeQ, e analisados pelas técnicas de Classificação Hierárquica Descendente, Especificidades Complementares e Análise Fatorial de Correspondência. As discussões apoiaram-se nas três perspectivas que abarcam a interculturalidade: relacional, funcional e crítica. Resultados foram conformadas três classes denominadas: Repertório biomédico; Repertório socioemocional; e Repertório comportamental. O biomédico foi o mais significativo para ambos os grupos, sendo liderado pelas não indígenas, e os constituintes socioemocional e comportamental foram majoritariamente representados pelas indígenas. Considerações Finais e implicações para a prática nesse cenário interétnico, o diálogo intercultural se materializa no intercâmbio de forma heterogênea de pensar-saber-fazer, que se desdobra sob a luz da interculturalidade relacional e funcional, demonstrando movimentos embrionários para a interculturalidade crítica.

Resumen Objetivo analizar desde la perspectiva de la interculturalidad los significados atribuidos al VIH y SIDA que componen los repertorios de mujeres en situación interétnica. Método estudio descriptivo, retrospectivo, desarrollado con base en la base de datos de investigación primaria. La muestra estuvo compuesta por 642 registros, provenientes de la aplicación del Test Libre de Asociación de Palabras, con 386 mujeres no indígenas y 256 mujeres indígenas del municipio de Rio Tinto-PB. Las respuestas aprendidas del estímulo inductor del SIDA se clasificaron según pertenencia al grupo, edad y estado civil. Los datos fueron procesados por el software IRaMuTeQ y analizados mediante las técnicas de Clasificación Jerárquica Descendente, Especificidades Complementarias y Análisis de Correspondencia Factorial. Las discusiones se basaron en las tres perspectivas que engloban la interculturalidad: relacional, funcional y crítica. Resultados se formaron tres clases: Repertorio biomédico; Repertorio socioemocional; y Repertorio conductual. El biomédico fue el más significativo para ambos grupos, siendo liderado por mujeres no indígenas, y los constituyentes socioemocionales y conductuales estuvieron mayoritariamente representados por mujeres indias. Consideraciones finales e implicaciones para la práctica en este escenario interétnico, el diálogo intercultural se materializa en el intercambio de una manera heterogénea de pensar-saber-hacer, que se despliega a la luz de la interculturalidad relacional y funcional, evidenciando movimientos embrionarios hacia una interculturalidad crítica.

Abstract Objective to analyze, from the perspective of interculturality, the meanings attributed to HIV/AIDS that make up the repertoires of women in interethnic situations. Method a descriptive, retrospective study, developed based on the primary research database. The sample consisted of 642 records, from the application of the Word Association Test, with 386 non-indigenous women and 256 indigenous women from the municipality of Rio Tinto-PB. The responses learned from the AIDS-inducing stimulus were categorized according to group belonging, age and marital status. Data were processed by the IRaMuTeQ software, and analyzed using the Descending Hierarchical Classification, complementary specificities and factorial correspondence analysis techniques. The discussions were based on the three perspectives that encompass interculturality: relational, functional and critical. Results Three classes were formed: Biomedical Repertoire, Socio-emotional Repertoire and Behavioral Repertoire. Biomedical Repertoire was the most significant for both groups, being led by non-indigenous women; the socio-emotional and behavioral constituents were mostly represented by indigenous women. Final considerations and implications for practice in this interethnic setting, intercultural dialogue materializes in the exchange of a heterogeneous way of thinking-knowing-doing, which unfolds in the light of relational and functional interculturality, demonstrating embryonic movements towards critical interculturality.

Sexual behavior of university students in the context of the COVID-19 pandemic: a mixed-methods study / Comportamiento sexual de los estudiantes universitarios en el contexto de la pandemia de covid-19: un estudio de métodos mixtos / Comportamento sexual de universitários no contexto da pandemia da COVID-19: um estudo de método misto

ABSTRACT Objective: To analyze the sexual behaviors of university students during the COVID-19 pandemic. Method: Mixed study, carried out on four campuses of a public university in Paraíba, Brazil, between March 2021 and April 2022. The research followed ethical precepts. Results: 404 university students were included, with an average age of 23.7 years, predominantly female, brown and single. The prevalence of self-reported sexually transmitted infections was 7.9%. Male students were more likely to engage in risky sexual behavior. Multiple logistic regression indicated that university students aged 25 or over who had engaged in casual sex in the last 12 months and had received or paid for sex were more likely to have sexually transmitted infections. The content analysis showed that social isolation was reflected in reduced consumption of alcohol and other substances, reduced sexual practices, increased use of social networks, as well as low adherence to condoms. Conclusion: Physical distancing has an impact on the sexual behavior of university students, as well as on the consumption of alcohol and other substances.

RESUMEN Objetivo: Analizar el comportamiento sexual de estudiantes universitarios durante la pandemia de COVID-19. Método: Estudio de método mixto realizado en cuatro campus de una universidad pública de Paraíba, Brasil, entre marzo de 2021 y abril de 2022. La investigación siguió preceptos éticos. Resultados: Fueron incluidos 404 estudiantes universitarios, con edad media de 23,7 años, predominantemente del sexo femenino, castaños y solteros. La prevalencia de infecciones de transmisión sexual autodeclaradas fue del 7,9%. Los estudiantes varones eran más propensos a tener conductas sexuales de riesgo. La regresión logística múltiple indicó que los estudiantes universitarios de 25 años o más, que habían mantenido relaciones sexuales ocasionales en los últimos 12 meses y que habían recibido o pagado por mantener relaciones sexuales tenían más probabilidades de padecer infecciones de transmisión sexual. El análisis de contenido mostró que el aislamiento social se reflejaba en una reducción del consumo de alcohol y otras sustancias, una reducción de las prácticas sexuales, un aumento del uso de redes sociales, así como una baja adherencia al preservativo. Conclusión: El distanciamiento físico influye en el comportamiento sexual de los universitarios, así como en el consumo de alcohol y otras sustancias.

RESUMO Objetivo: Analisar os comportamentos sexuais de estudantes universitários durante a pandemia da COVID-19. Método: Estudo misto, realizado em quatro campus de uma universidade pública na Paraíba, Brasil, entre março de 2021 e abril de 2022. A pesquisa seguiu os preceitos éticos. Resultados: Foram incluídos 404 universitários, com idade média de 23,7 anos de idade, com predomínio do sexo feminino, pardo e solteiro. A prevalência de infecções sexualmente transmissíveis por autorrelato foi de 7,9%. Estudantes do sexo masculino apresentaram com maior frequência a prática de comportamentos sexuais de risco. A regressão logística múltipla indicou que universitários com idade igual ou superior a 25 anos, que praticaram relação sexual casual nos últimos 12 meses e já receberam ou pagaram em troca de relação sexual apresentaram maiores chances de incidência de infecções sexualmente transmissíveis. A análise de conteúdo evidenciou que o isolamento social refletiu na diminuição do consumo de álcool e outras substâncias, redução de práticas sexuais, aumento do uso de redes sociais, assim como na baixa adesão ao preservativo. Conclusão: O distanciamento físico repercutiu no comportamento sexual de estudantes universitários, assim como no consumo de álcool e outras substâncias.

Comportamento sexual de mulheres pós-modernas e as infecções sexualmente transmissíveis: um estudo de revisão / Sexual behavior of post-modern women and sexually transmitted infections: a review study / Comportamiento sexual de mujeres posmoderno e infecciones de transmisión sexual: estudio de revisión

Objetivo: identificar as evidências científicas disponíveis na literatura sobre os comportamentos sexuais de risco de mulheres e a relação com a ocorrência de Infecções Sexualmente Transmissíveis. Método: revisão integrativa de artigos disponíveis na íntegra, obtidos nas bases PubMed, EBSCO, Lilacs e Web of Science. Foram utilizados descritores controlados e palavras-chave "women" ou "woman" ou "female", "sexually transmitted disease/transmission" ou "sexually transmitted diseases/transmission" e "comportamento sexual de risco" ou "unsafe sex". Resultados: foram identificados 794 estudos. Desses, treze estudos compuseram a amostra. As evidências mostraram que múltiplos parceiros sexuais; o uso de aplicativos móveis para recrutar parceiros; mulheres que fazem sexo com mulheres independente da orientação sexual; disparidade de idade em relacionamentos; relacionamentos intergeracionais são comportamentos sexuais de risco entre mulheres. Conclusão: presença de novos comportamentos sexuais de risco entre as mulheres pós-modernas. Identificar os novos e velhos comportamentos sexuais de risco é fundamental para o rastreio das infecções sexualmente transmissíveis.

Objective: to identify the scientific evidence available in the literature on the risky sexual behavior of women and the relationship with the occurrence of Sexually Transmitted. Method: integrative review of articles available in full, obtained from PubMed, EBSCO, Lilacs and Web os Science databases. Controlled descriptors and keywords "women" or "woman" or "female", "sexually transmitted disease/transmission" or "sexually transmitted diseases/transmission" and "risky sexual behavior" or "unsafe sex" were used. Results: 794 studies were identified. Of there, thirteen studies composed the sample. Evidence showed that multiple sexual partners; the use of mobile apps to recruit partners; women who have sex with women regardless of sexual orientation; age disparity in relationships; intergenerational relationships are risky sexual behaviors among women. Conclusion: presence of new sexual risk behaviors among post-moderns women. Identify new and old risky sexual behaviors is critical for screening for sexually transmitted infections.

Objetivo: identificar la evidencia científica disponible en la literatura sobre el comportamiento sexual de riesgo de las mujeres y la relación con la ocurrencia de Infecciones de Transmisión Sexual. Método: revisión integradora de artículos disponibles en su totalidad, obtenidos de las bases de datos PubMed, EBSCO, LILACS y Web of Science. Se utilizaron descriptores controlados y palabras clave "women" o "woman" o "female", "sexually transmitted disease/transmission" o "sexually transmitted diseases/ transmission" y "comportamento sexual de risco" o "unsafe sex" se utilizó. Resultados: se identificaron 794 estudios. De estos, trece estudios comprendieron la muestra. La evidencia mostró que múltiples parejas sexuales; el uso de aplicaciones móviles para reclutar socios; mujeres que tienen relaciones sexuales con mujeres independientemente de su orientación sexual; disparidad de edad en las relaciones; las relaciones intergeneracionales son comportamientos sexuales de riesgo entre las mujeres. Conclusión:presencia de nuevos e comportamientos sexuales de riesgo entre mujeres posmodernas. Identificar comportamientos sexuales de riesgo nuevos y antiguos es fundamental para la detección de infecciones de transmisión sexual.