Avaliação da qualidade de sono e ansiedade em profissionais e estudantes da saúde no contexto da pandemia pela covid-19 / Evaluación de la calidad del sueño y la ansiedad en profesionales y estudiantes de la salud en el contexto de la pandemia de COVID-19 / Assessment of sleep quality and anxiety in healthcare professionals and students in the context of the COVID-19 pandemic

Introdução: Na pandemia desencadeada pela COVID-19, o desenvolvimento progressivo de sintomas de ansiedade e a má qualidade do sono devem ser investigados em profissionais e estudantes da área da saúde para o adequado manejo. Objetivo: Identificar a prevalência de problemas de sono e sintomas ansiosos em profissionais e estudantes da saúde, e analisar o efeito de variáveis sociodemográficas-clínicas na ansiedade e sono dessa população.Metodologia: Neste estudo transversal de caráter quantitativo aplicou-se um formulário online a 3.337 profissionais e estudantes da saúde do Brasil participantes de um congresso virtual, contendo 51 perguntas subdivididas em três categorias: Perfil sociodemográfico-clínico, Escala de Sono de Jenkins e Inventário de Ansiedade de BECK.Resultados: Dentre os participantes, 81,4% eram estudantes da área da saúde e 12,8% profissionais de saúde. Os achados obtidos indicam que 41% dos participantes apresentaram problemas de sono muito frequentes e 46,6% sinais de ansiedade moderada a grave. Houve associação estatisticamente significativa entre as variáveis sociodemográficas-clínicas e os questionários validados de sono e ansiedade. Conclusão: Essa pesquisa identificou importante prevalência de problemasde sono e sintomas ansiosos em profissionais e estudantes da saúde, sendo primordial a identificação precoce dessas alterações para um manejo efetivo (AU).

Introduction: In the pandemic triggered by COVID-19, the progressive development of anxiety symptoms and poor sleep quality should be investigated in healthcare professionals and students for proper management.Objective: To identify the prevalence of sleep problems and anxious symptoms in healthcare professionals and students, and to analyze the effect of sociodemographic-clinical variables on anxiety and sleep in this population. Methodology: In this cross-sectional quantitative study, an online form was applied to 3,337 healthcare professionals and students from Brazil participating in a virtual congress, containing 51 questions subdivided into three categories: Sociodemographic-clinical profile, Jenkins Sleep Scale and BECK Anxiety Inventory.Results: Among the participants, 81.4% were healthcare students and 12.8% were healthcare professionals. The findings indicate that 41% of the participants had very frequent sleep problems and 46.6% showed signs of moderate to severe anxiety. There was a statistically significant association between the sociodemographic-clinical variables and the validated sleep and anxiety questionnaires. Conclusion:This study identified a high prevalence of sleep problems and anxiety symptoms among healthcare professionals and students, and early identification of these alterations is essential for effective management (AU).

Introducción: En la pandemia desencadenada por el COVID-19, el desarrollo progresivo de síntomas de ansiedad y la mala calidad del sueño deben ser investigados en profesionales y estudiantes de la salud para su adecuado manejo. Objetivo: Identificar la prevalencia de problemas de sueño y síntomas ansiosos en profesionales y estudiantes de la salud, y analizar el efecto de las variables sociodemográficas-clínicas sobre la ansiedad y el sueño en esta población. Metodología:En este estudio transversal y cuantitativo, se aplicó un formulario línea 3.337 profesionales y estudiantes de la salud de Brasil que participaron en un congreso virtual, conteniendo 51 preguntas subdivididas en tres categorías: perfil sociodemográfico-clínico, Escala de Sueño de Jenkins e Inventario de Ansiedad de BECK. Resultados: Entre los participantes, 81,4% eran estudiantes de salud y 12,8% profesionales de la salud. Los resultados indican que el 41% de los participantes tenía problemas de sueño muy frecuentes y el 46,6% mostraba signos de ansiedad de moderada a grave. Hubo una asociación estadísticamentesignificativa entre las variables sociodemográficas-clínicas y los cuestionarios validados de sueño y ansiedad. Conclusión:Este estudio identificó una alta prevalencia de problemas de sueño y síntomas de ansiedad en profesionales de la salud y estudiantes, y la identificación precoz de estas alteraciones es esencial para un manejo eficaz (AU).

Distribution of nitric oxide in the rock cavy (Kerodon rupestris) brain II: The brainstem.

In a recent paper, we described the distribution of Nitric oxide (NO) in the diencephalon of the rock cavy (Kerodon rupestris). This present paper follows this work, showing the distribution of NO synthesizing neurons in the rock cavy's brainstem. For this, we used immunohistochemistry against the neuronal form of nitric oxide synthase (NOS) and NADPH diaphorase histochemistry. In contrast to the diencephalon in the rock cavy, where the NOS neurons were seen to be limited to some nuclei in the thalamus and hypothalamus, the distribution of NOS in the brainstem is widespread. Neurons immunoreactive to NOS (NOS-ir) were seen as rostral as the precommissural nuclei and as caudal as the caudal and gelatinous parts of the spinal trigeminal nucleus. Places such as the raphe nuclei, trigeminal complex, superior and inferior colliculus, oculomotor complex, periaqueductal grey matter, solitary tract nucleus, laterodorsal tegmental nucleus, pedunculopontine tegmental, and other nuclei of the reticular formation are among the locations with the most NOS-ir neurons. This distribution is similar, but with some differences, to those described for other rodents, indicating that NO also has an important role in rock cavy's physiology.

Distribution of nitric oxide synthase in the rock cavy (Kerodon rupestris) brain I: The diencephalon.

Nitric oxide (NO) is a highly soluble and membrane-permeable neurotransmitter, so it does not need to be packed in vesicles or have a membrane receptor. In the nervous system, NO is synthesized by the neuronal form of the nitric oxide synthase (NOS) enzyme and has been considered as a local neurotransmitter. NOS distribution is widespread in the nervous system of various vertebrate species, which may explain its participation in many functions such as memory, blood pressure regulation and sexual behavior. Here we used immunohistochemistry against NOS and NADPH diaphorase histochemistry to map the distribution of NO in the diencephalon of the rock cavy (Kerodon rupestris), a rodent endemic to the Brazilian Northeast. Rock cavy has crepuscular habits and is adapted to ecological conditions such as heat and scarcity of water and food. This study found that NOS distribution was more concentrated in the hypothalamus of this animal. Among the hypothalamic nuclei, the median preoptic, supraoptic, paraventricular nucleus of the hypothalamus, ventromedial nucleus of the hypothalamus, ventral and dorsal premammillary nucleus, supramammillary nucleus, lateral mammillary nucleus and dorsal hypothalamic nucleus had the largest collections of NOS immunoreactive (NOS-ir) neurons. Some nuclei of the thalamus and epithalamus such as the paraventricular nucleus of the thalamus, the ventral lateral geniculate nucleus, the medial geniculate nucleus and the lateral habenula showed NOS-ir neurons. This distribution is similar to that described in other rodents, indicating that NO also has an important role in rock cavy's physiology.