Cannabidiol in the dorsal hippocampus attenuates emotional and cognitive impairments related to neuropathic pain: The role of prelimbic neocortex-hippocampal connections.

BACKGROUND AND PURPOSE: Chronic neuropathic pain (NP) is commonly associated with cognitive and emotional impairments. Cannabidiol (CBD) presents a broad spectrum of action with a potential analgesic effect. This work investigates the CBD effect on comorbidity between chronic NP, depression, and memory impairment. EXPERIMENTAL APPROACH: The connection between the neocortex and the hippocampus was investigated with biotinylated dextran amine (BDA) deposits in the prelimbic cortex (PrL). Wistar rats were submitted to chronic constriction injury (CCI) of the sciatic nerve and CA1 treatment with CBD (15, 30, 60 nmol). KEY RESULTS: BDA-labeled perikarya and terminal buttons were found in CA1 and dentate gyrus. CCI-induced mechanical and cold allodynia increased c-Fos protein expression in the PrL and CA1. The number of astrocytes in PrL and CA1 increased, and the number of neuroblasts decreased in CA1. Animals submitted to CCI procedure showed increasing depressive-like behaviors, such as memory impairment. CBD (60 nmol) treatment decreased mechanical and cold allodynia, attenuated depressive-associated behaviors, and improved memory performance. Cobalt chloride (CoCl2: 1 nM), WAY-100635 (0.37 nmol), and AM251 (100 nmol) intra-PrL reversed the effect of CA1 treatment with CBD (60 nmol) on nociceptive, cognitive, and depressive behaviors. CONCLUSION: CBD represents a promising therapeutic perspective in the pharmacological treatment of chronic NP and associated comorbidities such as depression and memory impairments. The CBD effects possibly recruit the CA1-PrL pathway, inducing neuroplasticity. CBD acute treatment into the CA1 produces functional and molecular morphological improvements.

Food consumption profile of rural riverside populations.

INTRODUCTION: The uniqueness of the way of life of rural riverside populations is of interest because they are the largest traditional Amazonian population. Their eating habits reveal their life conditions and relationship with the urban environment and is a poorly investigated subject. This research aimed to describe and analyze the food consumption of Amazonian riverside populations based on the food types consumed and reported by the families. METHODS: A cross-sectional study was carried out on the rural riverside population occupying part of the riverbank of Rio Negro, in Manaus County, North Brazil. This population can only be accessed by river. Random, systematic, stratified sampling was conducted on 287 households. A questionnaire about consumed food, socioeconomic conditions and food obtainment was applied. The analysis was performed in R software. Descriptive statistical analysis and log-binomial regression were carried out. RESULTS: It was observed that eating habits were mainly based on in natura (unprocessed) or minimally processed foods, according to the food classification system NOVA. Food diversity was low and the most consumed food types were coffee, flour and rice. The influence of small local markets, income and traditional practices on food intake based on food processing level was also observed. Thus, the chances of eating fish in locations with a small grocery shop were lower (p=0.009) and of eating chicken were higher (p≤0.001). The chances of consuming in natura or minimally processed foods among the literate population (p=0.041) with higher income (p≤0.001) were higher. The chances of eating processed foods were lower where fishing (p=0.007) and farming (p=0.009) were practiced. CONCLUSION: Based on these unexpected results, the present research highlights the food consumption of a riverside population and reduces the shortage of information about the largest traditional Amazonian population.

E-learning as a strategy in dentistry in the context of COVID-19: a path to follow?

The current study aims to assess the effectiveness of e-learning in compliance with the new biosafety recommendations in dentistry in the context of COVID-19 applied to the clinical staff of a dental school in Brazil. A quasi-experimental epidemiological study was carried out by means of a structured, pre-tested online questionnaire, applied before and after an educational intervention, using an e-learning format. After data collection, statistical tests were performed. A total of 549 members of the clinical staff participated in the study in the two collection phases, with a return rate of 26.9%. After the e-learning stage, a reduction was found in the reported use of disposable gloves, protective goggles, and surgical masks. The course had no impact on the staff's knowledge concerning the proper sequence for donning PPE and showed 100% effectiveness regarding proper PPE doffing sequence. Knowledge about avoiding procedures that generate aerosols in the clinical setting was improved. Despite the low rate of return, it can be concluded that online intervention alone was ineffective in significantly improving learning about the new clinical biosafety guidelines. Therefore, the use of hybrid teaching and repetitive training is highly recommended.

Acanthoscurria gomesiana spider-derived Mygalin in the prelimbic prefrontal cortex modulates neuropathic pain and depression comorbid.

Depression has a high rate of comorbidity with neuropathic pain. This study aims to investigate the effect of Mygalin, an acylpolyamine synthesized from a natural molecule in the hemolymph of the Acanthoscurria gomesiana spider, injected into the prelimbic (PrL) region of the medial prefrontal cortex on chronic neuropathic pain and depression comorbidity in rats. To investigate that comorbidity, neuropathic pain was induced by chronic constriction injury (CCI) of the sciatic nerve in male Wistar rats. The biotinylated biodextran amine (BDA) bidirectional neural tract tracer was microinjected into the PrL cortex to study brain connections. Rodents were further subjected to von Frey (mechanical allodynia), acetone (cold allodynia), and forced swim (depressive-like behavior) tests. BDA neural tract tracer-labeled perikarya were found in the dorsal columns of the periaqueductal gray matter (dPAG) and the dorsal raphe nucleus (DRN). Neuronal activity of DRN neurons decreased in CCI rats. However, PrL cortex treatment with Mygalin increased the number of spikes on DRN neurons. Mygalin treatment in the PrL cortex decreased both mechanical and cold allodynia and immobility behavior in CCI rats. PrL cortex treatment with N-methyl-D-aspartate (NMDA) receptor receptors attenuated the analgesic and antidepressive effects caused by Mygalin. The PrL cortex is connected with the dPAG and DRN, and Mygalin administration into the PrL increased the activity of DRN neurons. Mygalin in the PrL cortex produced antinociceptive and antidepressive-like effects, and the NMDA agonist reversed these effects.

E-learning as a strategy in dentistry in the context of COVID-19: a path to follow?

Abstract The current study aims to assess the effectiveness of e-learning in compliance with the new biosafety recommendations in dentistry in the context of COVID-19 applied to the clinical staff of a dental school in Brazil. A quasi-experimental epidemiological study was carried out by means of a structured, pre-tested online questionnaire, applied before and after an educational intervention, using an e-learning format. After data collection, statistical tests were performed. A total of 549 members of the clinical staff participated in the study in the two collection phases, with a return rate of 26.9%. After the e-learning stage, a reduction was found in the reported use of disposable gloves, protective goggles, and surgical masks. The course had no impact on the staff's knowledge concerning the proper sequence for donning PPE and showed 100% effectiveness regarding proper PPE doffing sequence. Knowledge about avoiding procedures that generate aerosols in the clinical setting was improved. Despite the low rate of return, it can be concluded that online intervention alone was ineffective in significantly improving learning about the new clinical biosafety guidelines. Therefore, the use of hybrid teaching and repetitive training is highly recommended.

Hand-foot syndrome caused by capecitabine: incidence, risk factors and the role of dermatological evaluation.

Hand-foot syndrome (HFS), or palmar-plantar erythrodysesthesia, is characterised by erythema, oedema and dysesthesia, which can progress to blistering and ulceration. This condition is described as a common adverse effect of the chemotherapeutic agent capecitabine. The study set out to evaluate real-world incidences; assess severity based on clinical criteria, such as local symptoms, dyschromia, erythema, oedema and ulcerations; and associated factors, such as type of solid tumour, chemotherapy regimen, number of cycles, sex, age and Eastern Cooperative Oncology Group Performance Scale of HFS, related to the use of capecitabine. This is a single-centre prospective cohort study carried out jointly by the departments of clinical oncology and dermatology of a university hospital in the southeast of Brazil. The study showed a 34% incidence of HFS, with most cases classified as mild. There was statistical significance in the correlation of the syndrome with sex and performance scores. HFS is the most common and limiting adverse reaction to capecitabine, and causes significant functional and quality impairments in patients with cancer. With this study, we have reinforced the importance of multidisciplinary assessment for early diagnosis and adequate follow-up.

Processamento fonológico e leitura em crianças com dificuldade de aprendizagem em escolas bilíngues português-inglês: relatos de casos / Phonological processing and reading in children with learning difficulties in Portuguese-English bilingual schools: case reports / Procesamiento y lectura fonológica en niños con dificultades de aprendizaje en escuelas bilingües portugués-inglés: reporte de casos

Introdução: Há influência positiva no desenvolvimento da linguagem, quando ocorre a exposição a um novo idioma. No entanto, quando se considera esse contexto em crianças com dificuldade de aprendizagem, o deficit apresentado na primeira língua pode ser transferido para o aprendizado da segunda. Objetivo: O objetivo do presente estudo é caracterizar o desempenho em processamento fonológico e leitura em três crianças com dificuldade de aprendizagem em escolas bilíngues português-inglês. Método: Os dados gerais sobre o desenvolvimento e desempenho nas habilidades de consciência fonológica, memória de trabalho fonológica, acesso ao léxico mental e leitura em três crianças de 8 a 9 anos de idade, cursando 2º e 3º ano do ensino fundamental foram descritos; todos com, ao menos, dois anos de exposição à escola bilíngue, especialmente na alfabetização. Na avaliação, foram aplicados os protocolos CONFIAS, Memória de Trabalho Fonológica, TENA, RAN e Protocolo de Avaliação da Compreensão Leitora de Textos Expositivos. Resultado: as crianças apresentaram desempenho aquém do esperado nas habilidades do processamento fonológico, na fluência da leitura oral, bem como na compreensão leitora. Conclusão: esses resultados podem contribuir tanto para a compreensão de aspectos da linguagem escrita na atuação do fonoaudiólogo com crianças bilíngues, quanto para as implicações clínicas e educacionais, haja vista a escassez de estudos nessa área, no Brasil.

Introduction: There is a positive influence on language development when there is exposure to a new language. However, when considering this context in children with learning difficulties, the deficits presented in the first language can be transferred to the learning of the second. Objective: The aim of the present study was to characterize the performance in phonological processing and reading in three children with learning difficulties from Brazilian-English bilingual schools. Method: General data on the development and performance in phonological awareness skills, phonological working memory, access to mental lexicon and reading in three children aged 8 to 9 years, attending the 2nd and 3rd year of elementary school were described; all with at least two years of exposure to bilingual school, especially in literacy. In the evaluation, the protocols CONFIAS, Phonological Working Memory, TENA, RAN and Protocol for Assessment of Reading Comprehension of Expository Texts were applied. Results: The children performed below expectations in terms of phonological processing skills, difficulties in oral reading fluency, as well as in reading comprehension. Conclusion: These results can contribute to the understanding of aspects of written language in the performance of speech therapists with bilingual children, regarding clinical and educational implications, given the scarcity of studies in this area in Brazil.;Introducción: Existe una influencia positiva en el desarrollo del lenguaje cuando hay exposición a un nuevo idioma. Sin embargo, al considerar este contexto en niños con dificultades de aprendizaje, los déficits presentados en el primer idioma se pueden trasladar al aprendizaje del segundo. Objetivo: El objetivo del presente estudio fue caracterizar el desempeño en procesamiento fonológico y lectura en tres niños con dificultades de aprendizaje de escuelas bilingües brasileño-inglés. Método: Se describieron datos generales sobre el desarrollo y desempeño en las habilidades de conciencia fonológica, memoria de trabajo fonológica, acceso al léxico mental y lectura en tres niños de 8 a 9 años de 2º y 3º de primaria; todos con al menos dos años de exposición a la escuela bilingüe, especialmente en alfabetización. En la evaluación se aplicaron los protocolos CONFIAS, Memoria Fonológica de Trabajo, TENA, RAN y Protocolo de Evaluación de la Comprensión Lectora de Textos Expositivos. Resultados: Los niños se desempeñaron por debajo de las expectativas en términos de habilidades de procesamiento fonológico, dificultades en la fluidez de la lectura oral, así como en la comprensión lectora. Conclusión: Estos resultados pueden contribuir a la comprensión de aspectos del lenguaje escrito en el desempeño de logopedas con niños bilingües, en cuanto a implicaciones clínicas y educativas, dada la escasez de estudios en esta área en Brasil.

Introduction: There is a positive influence on language development when there is exposure to a new language. However, when considering this context in children with learning difficulties, the deficits presented in the first language can be transferred to the learning of the second. Objective: The aim of the present study was to characterize the performance in phonological processing and reading in three children with learning difficulties from Brazilian-English bilingual schools. Method: General data on the development and performance in phonological awareness skills, phonological working memory, access to mental lexicon and reading in three children aged 8 to 9 years, attending the 2nd and 3rd year of elementary school were described; all with at least two years of exposure to bilingual school, especially in literacy. In the evaluation, the protocols CONFIAS, Phonological Working Memory, TENA, RAN and Protocol for Assessment of Reading Comprehension of Expository Texts were applied. Results: The children performed below expectations in terms of phonological processing skills, difficulties in oral reading fluency, as well as in reading comprehension. Conclusion: These results can contribute to the understanding of aspects of written language in the performance of speech therapists with bilingual children, regarding clinical and educational implications, given the scarcity of studies in this area in Brazil.;Introducción: Existe una influencia positiva en el desarrollo del lenguaje cuando hay exposición a un nuevo idioma. Sin embargo, al considerar este contexto en niños con dificultades de aprendizaje, los déficits presentados en el primer idioma se pueden trasladar al aprendizaje del segundo. Objetivo: El objetivo del presente estudio fue caracterizar el desempeño en procesamiento fonológico y lectura en tres niños con dificultades de aprendizaje de escuelas bilingües brasileño-inglés. Método: Se describieron datos generales sobre el desarrollo y desempeño en las habilidades de conciencia fonológica, memoria de trabajo fonológica, acceso al léxico mental y lectura en tres niños de 8 a 9 años de 2º y 3º de primaria; todos con al menos dos años de exposición a la escuela bilingüe, especialmente en alfabetización. En la evaluación se aplicaron los protocolos CONFIAS, Memoria Fonológica de Trabajo, TENA, RAN y Protocolo de Evaluación de la Comprensión Lectora de Textos Expositivos. Resultados: Los niños se desempeñaron por debajo de las expectativas en términos de habilidades de procesamiento fonológico, dificultades en la fluidez de la lectura oral, así como en la comprensión lectora. Conclusión: Estos resultados pueden contribuir a la comprensión de aspectos del lenguaje escrito en el desempeño de logopedas con niños bilingües, en cuanto a implicaciones clínicas y educativas, dada la escasez de estudios en esta área en Brasil.

Infralimbic medial prefrontal cortex alters electroacupuncture effect in animals with neuropathic chronic pain.

INTRODUCTION: Morphological reorganization in the neural networks of the medial prefrontal cortex (mPFC) may be involved in the development of chronic neuropathic pain (NP). OBJECTIVES: We investigated whether inactivation and neurostimulation of the infralimbic division (IFL) of the mPFC alter electroacupuncture-induced analgesia (EIA) at 2 Hz and 2/100 Hz in animals with chronic NP. METHODS: Wistar rats were submitted to chronic constrictor injury of the ischiadicus nerve (CCI). Von Frey and acetone tests were performed to evaluate mechanical or cold allodynia. Animals were submitted to electroacupuncture (EA) at 2 Hz and 2/100 Hz for 20 min. After EA, the IFL cortex synaptic contacts were inactivated by cobalt chloride (200 nL of 1.0 mM CoCl2). Neurostimulation of the IFL cortex was also performed at 20 µA for 15 s, after EA, using a deep brain stimulation device. RESULTS: EA at 2 Hz and 2/100 Hz attenuated mechanical or cold allodynia in CCI rats. Microinjection of CoCl2 into the IFL division of the mPFC blocked the EA effect. EA at 2 Hz and 2/100 Hz, in association with neurostimulation of the IFL cortex, attenuated mechanical and thermal allodynia. CONCLUSION: EA induces antinociception in CCI rats. The analgesia was potentiated in association with neurostimulation in the IFL division of the mPFC.

Staff Knowledge and Attitudes Towards COVID-19 New Biosafety Practices at a Brazilian Dental School

ABSTRACT Objective To evaluate knowledge and attitudes towards biosafety recommendations during the COVID-19 pandemic at a Brazilian dental school. Material and Methods A cross-sectional study was performed in 2020 with the clinical staff of a Brazilian dental school. The whole clinical staff was sent pre-tested self-administered online questionnaires about knowledge and attitudes towards the recommendations for biosafety in dental settings in the context of the COVID-19 pandemic. Descriptive statistical analyses were carried out for proportion calculation. Results Disposable head covering caps, isolation gowns, and gloves were the most frequently reported personal protective equipment (PPE). The rates ranged from 52.9% to 88.5% for N95 respirators, from 68.6% to 92.6% for face shields, from 47.4% to 67.5% for conventional eye protection shields, and 45.1% to 77.4% for eye protection with solid side shields. Chlorhexidine gluconate was the most frequent mouthwash indicated before clinical dental care. The percentage of agreement to provide clinical care to patients with suspected COVID-19 varied from 23.5% to 50.0%. The percentage of respondents who agreed that bioaerosol-generating procedures should be avoided was higher than 74.5%. Less than 50% knew the correct sequence for doffing of PPE. Conclusion This study revealed important gaps in knowledge and attitudes towards prevention and control measures against infection in dental environments in the context of COVID-19, indicating the need for improvements.

Fibrohistiocitoma maligno de face: uma apresentação rara / Malignant fibrohistiocytoma of face: a rare presentation

Contexto: O fibrohistiocitoma maligno é um sarcoma de tecidos moles muito agressivo, com rara apresentação limitada à pele e tecido subcutâneo em face. O diagnóstico é anatomopatológico com auxílio da imuno-histoquímica. Descrição do caso: Este artigo relata o caso de um paciente com diagnóstico de fibrohistiocitoma maligno restrito à face com boa resposta terapêutica após exérese cirúrgica. Discussão: Tendo em vista a raridade dessa afecção, dificuldade diagnóstica devido ao quadro inespecífico e com rápida evolução, é importante lembrar desse possível diagnóstico e atuar precocemente. Conclusões: O diagnóstico precoce interfere de forma significativa na evolução do quadro, sendo necessária a manutenção do acompanhamento oncológico e dermatológico com o intuito de detectar precocemente recidivas locais e metástases a distância.

The primary motor cortex electrical and chemical stimulation attenuates the chronic neuropathic pain by activation of the periaqueductal grey matter: The role of NMDA receptors.

BACKGROUND: Motor cortex stimulation (MCS) is proper as a non-pharmacological therapy for patients with chronic and neuropathic pain (NP). AIMS: This work aims to investigate if the MCS in the primary motor cortex (M1) produces analgesia and how the MCS could interfere in the MCS-induced analgesia. Also, to elucidate if the persistent activation of N-methyl-d-aspartic acid receptor (NMDAr) in the periaqueductal grey matter (PAG) can contribute to central sensitisation of the NP. METHODS: Male Wistar rats were submitted to the von Frey test to evaluate the mechanical allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve. The MCS was performed with low-frequency (20 µA, 100 Hz) currents during 15 s by a deep brain stimulation (DBS) device. Moreover, the effect of M1-treatment with an NMDAr agonist (at 2, 4, and 8 nmol) was investigated in CCI rats. The PAG dorsomedial column (dmPAG) was pretreated with the NMDAr antagonist LY 235959 (at 8 nmol), followed by MCS. RESULTS: The MCS decreased the mechanical allodynia in rats with chronic NP. The M1-treatment with an NMDA agonist at 2 and 8 nmol reduced the mechanical allodynia in CCI rats. In addition, dmPAG-pretreatment with LY 235959 at 8 nmol attenuated the mechanical allodynia evoked by MCS. CONCLUSION: The M1 cortex glutamatergic system is involved in the modulation of chronic NP. The analgesic effect of MCS may depend on glutamate signaling recruitting NMDAr located on PAG neurons in rodents with chronic NP.

Perfil clínico, histopatológico e tricoscópico da alopecia frontal fibrosante: estudo retrospectivo de casos de um serviço de referência de dermatologia / Clinical, histopathological and trichoscopic of frontal alopecia fibrosing: retrospective study of cases of a service of dermatology reference

Contexto: Alopecia frontal fibrosante (AFF) é uma alopecia cicatricial que acomete a região frontotemporal, e predomina em mulheres pós-menopausadas. Objetivo: Descrever o perfil clínico, histopatológico e tricoscópico de pacientes com diagnóstico de AFF. Desenho e local: Estudo de coorte retrospectivo observacional que foi desenvolvido no ambulatório de tricologia do departamento de dermatologia do Hospital Santa Casa de Misericórdia de Vitória, Vitória (ES), Brasil. Métodos: O estudo foi realizado por meio da análise de prontuários e de revisão histopatológica de pacientes com diagnóstico de AFF atendidos entre 1 de março de 2019 a 29 de fevereiro de 2020. Resultados: No período, 17 pacientes do sexo feminino foram diagnosticadas com AFF, 76,5% delas na pós-menopausa. Todas apresentavam alopecia frontotemporal e madarose. À tricoscopia, ausência de pelos velus, aberturas foliculares reduzidas, hiperceratose folicular e eritema perifolicular foram encontrados na maioria dos casos. Todas as biópsias mostraram aspectos microscópicos compatíveis com AFF. O tratamento mais utilizado foi tacrolimo 0,1%. Discussão: A patogênese da AFF ainda não é compreendida. A associação com doenças autoimunes sugere a influência da imunidade no quadro. A tricoscopia é uma ferramenta de fácil acesso e não invasiva que pode auxiliar no diagnóstico. Histopatologicamente a AFF é indistinguível do líquen plano pilar. O tratamento objetiva reduzir a inflamação e retardar a progressão da doença. Conclusões: Embora apresentações clínicas e tricoscópicas tenham sido descritas ao longo dos anos, a patogênese, a histologia e os tratamentos eficazes para AFF ainda são debatidos. O reconhecimento e o tratamento precoce da doença permitiriam a redução da progressão da doença.

Biomechanics of the fresh and conserved bovine pericardium.

The use of biological membranes in surgeries is a reality for years, and one of the most used is the bovine pericardium, so the purpose of this research is to describe the bovine pericardium's biomechanics by comparing two directions of a test, one parallel to the longitudinal heart axis and one perpendicular. 20 adult bovine pericardium were tested for the maximum rupture force and rupture elongation, collecting four samples of each pericardium direction. In phase 2, eight pericardia were conserved for 4 months in a 98% glycerine solution, and the solution in which they were submerged was microbiologically analysed monthly. The Mann-Whitney test was used; there was a very significant difference between the perpendicular and parallel groups (p = .0001). The T test showed no significant difference for the rupture elongation (p = .0938). In pericardium preserved in glycerine, the outliers were removed regarding the maximum rupture force, and a Boxcox transformation was performed (λ = 0.25). Outliers were removed for the rupture elongation, and Bartlett's test (p = .7836), and Cramer-Von Mises (p = .5033) were performed and then, the analysis of variance (p < .0001), followed by the Tukey test at 5%. In the microbiological analysis, there was no presence of microorganisms during conservation. The research has shown that the pericardium collection direction influences its resistance and it can be stored in glycerine for 4 months without losing biomechanical characteristics.

O Melanoma pode esperar o Fim da Pandemia da Covid-19? / ¿Puede el Melanoma esperar el Fin de la Pandemia de la Covid-19? / Can Melanoma wait for the End of the COVID-19 Pandemic?

Introdução: A doença pelo coronavírus 2019 (coronavirus disease 2019 - covid-19) e as orientações de isolamento social promoveram uma drástica diminuição da procura pela avaliação dermatológica e cirurgias, fundamentais para a detecção precoce e prognóstico do melanoma. Objetivo: Avaliar a redução no diagnóstico e atendimento de pacientes com melanoma decorrentes da covid-19 entre 20 de março a 30 de junho de 2019 e correlacionar com os dados adquiridos entre 20 de março a 30 de junho de 2020. Método: Estudo retrospectivo de revisão de prontuários de pacientes com diagnóstico de melanoma. Trata-se de resultado parcial obtido de um trabalho que investigou o impacto global da pandemia no ambulatório e residência de dermatologia. Resultados: No período analisado, houve uma redução de 94,1% nos atendimentos de pacientes com câncer de pele melanoma. Negligenciar o melanoma durante a pandemia pode resultar em aumento da mortalidade e morbidade, além de maiores custos de saúde. Conclusão: É importante que os serviços públicos e privados se adequem às limitações do momento e, considerando a situação atual, esforços devem ser feitos para facilitar o acesso controlado ao dermatologista, pois isso evitará atrasos que resultem em pior prognóstico

Introduction: Coronavirus 2019 disease (coronavirus disease 2019 - COVID-19) and social isolation guidelines promoted a drastic reduction of the demand for dermatological evaluation and surgeries, essential for early detection and prognosis of melanoma. Objective: To evaluate the reduced number of diagnoses and consultation of patients with melanoma resulting from COVID-19 between March 20 and June 30, 2019 and correlate with data collected between March 20 and June 30, 2020. Method: Retrospective, review study of medical charts of patients diagnosed with melanoma. It is a partial result obtained from a study that investigated the global impact of the pandemic in the dermatology outpatient clinic and residency. Results: In the period analyzed, a reduction of 94.1% of the consultation of patients with melanoma skin cancer was found. Neglecting melanoma during the pandemic can result in increased mortality and morbidity, in addition to higher healthcare costs. Conclusion: It is important that public and private services adjust to the restrictions in-force and considering the current scenario, efforts to facilitate the controlled access to the dermatologist must be made because it could avoid delays that can lead to worse prognosis

Introducción: La enfermedad del coronavirus 2019 (enfermedad del coronavirus 2019 - covid-19) y las pautas de aislamiento social promovieron una reducción drástica de la demanda, a través de la evaluación dermatológica y las cirugías, esenciales para la detección temprana y el pronóstico del melanoma. Objetivo: Evaluar la reducción en el diagnóstico y atención de pacientes con melanoma por covid-19 entre el 20 de marzo y el 30 de junio de 2019 y correlacionar con los datos adquiridos entre el 20 de marzo y el 30 de junio de 2020. Método: Estudio retrospectivo de revisión de historias clínicas. de los pacientes diagnosticados de melanoma. Este es un resultado parcial obtenido de un estudio que investigó el impacto global de la pandemia en la clínica y residencia de dermatología. Resultados: En el período analizado, hubo una reducción del 94,1% en pacientes con cáncer de piel tipo melanoma. Descuidar el melanoma durante una pandemia puede resultar en una mayor mortalidad y morbilidad, así como en mayores costos de atención médica. Conclusión: Es importante que los servicios públicos y privados se adecúen a las limitaciones del momento y considerando la situación actual, esfuerzos deben ser hechos para facilitar el acceso controlado al dermatologista para evitar retrasos que pueden llevar a peores pronósticos

Desempenho em vocabulário receptivo e variáveis sociodemográficas em escolares com queixa de dificuldades de aprendizagem / Performance in receptive vocabulary and sociodemographic variables in schoolchildren complaining of learning difficulties

RESUMO Objetivo Descrever e relacionar o desempenho do vocabulário receptivo em escolares com dificuldades de aprendizagem de diferentes gêneros, escolaridades e níveis socioeconômicos. Métodos Estudo documental, entre 2017 e 2019, considerando os dados demográficos gênero, escolaridade e nível socioeconômico da família. Os prontuários incluídos foram aqueles com avaliação fonoaudiológica completa. Para verificar o nível socioeconômico da família, foi utilizado o questionário da Associação Brasileira de Empresas de Pesquisa - ABEP e, para a habilidade do vocabulário receptivo, o Teste de Vocabulário por Figuras USP - TVfusp 139o. Nesse teste, o desempenho em vocabulário é classificado como "muito rebaixado", "rebaixado", "médio", "elevado" e "muito elevado". Para o critério de classificação apresentar-se na média, o escore de acertos por escolaridade é de 105,8 para o 2º ano, 112,8 para o 3º ano e 117,4 para o 4º ano. Resultados Dos 46 participantes da amostra, 31 (67,4%) eram do gênero masculino e 15 (32,6%) do feminino, com predomínio de estudantes no 4º ano (34,80%) e classe socioeconômica entre os níveis B2 e D-E. Na avaliação do vocabulário, 28 (60%) participantes obtiveram classificação média. Houve correlação entre a escolaridade e o desempenho em vocabulário receptivo (p=0,008) e entre a idade e o desempenho em vocabulário receptivo (p=0,007). Conclusão O desempenho em vocabulário receptivo avançou com a idade e a escolaridade, porém, não houve influência do nível socioeconômico.

ABSTRACT Purpose To describe and relate the performance of receptive vocabulary in students with learning difficulties of different genders, educational levels, and socioeconomic levels. Methods Documentary study, approved by the Research Ethics Committee under number 1,012,635, with 46 records between 2017 and 2019, considering demographic data: gender, education, and socioeconomic level of the family. The medical records included were those with complete speech-language assessments. To check the family's socioeconomic level, the questionnaire from the Brazilian Association of Research Companies - ABEP was used, and for the receptive vocabulary skill, the Picture Vocabulary Test - TVfusp139o. In this test, the classification very low, low, medium, high and very high is used. For the classification criterion to be presented as the average, the score of correct answers by education is 2nd grade (105.8), 3rd grade (112.8) and 4th grade (117.4). Results Of the 46 participants in the sample, 31 (67.4%) were male and 15 (32.6%) female, with a predominance of students in the 4th year (34.80%) and socioeconomic class between levels B2 and D-E. In the vocabulary assessment, 28 (60%) of the 46 participants obtained an "average" classification. There was a correlation between education and receptive vocabulary performance (p = 0.008) and; between age and receptive vocabulary performance (p = 0.007). Conclusion Performance in receptive vocabulary advanced with age and education, but there was no influence on a socioeconomic level.

Modelos neuropsicobiológicos para estudo da dor e das emoções / Neuropsychobiological models for the study of pain and emotions / Modelos neuropsicológicos para el estudio del dolor y las emociones

Dor é uma experiência pessoal e subjetiva que pode apenas ser sentida pelo sofredor. A dor aguda tem a finalidade de avisar o indivíduo que algo está errado. Contudo, a dor crônica (DC) é um problema global de saúde, que afeta a qualidade de vida e torna o indivíduo parcial ou totalmente incapacitado. A pesquisa básica utiliza diversos modelos animais para o estudo da dor aguda ou crônica, bem como para o estudo das principais comorbidades oriundas de sua cronificação como a ansiedade e a depressão. Esta revisão aborda os modelos animais mais comumente utilizados neste contexto.

Pain is a personal and subjective experience that can only be felt by the sufferer. Acute pain is intended to warn the individual that something is wrong. However, chronic pain (CP) is a global health problem, affecting the quality of life and making the individual parts or disabled. Basic research uses several animal models for the study of acute or chronic pain, as well as for the study of the main comorbidities arising from their chronicity, such as anxiety and depression. This review focuses on the animal models most commonly used in this context.

El dolor es una experiencia personal y subjetiva que solo puede sentir la víctima. El dolor agudo está destinado a advertir al individuo que algo está mal. Sin embargo, el dolor crónico (EC) es un problema de salud global, que afecta la calidad de vida y hace que el individuo esté parcial o totalmente discapacitado. La investigación básica utiliza varios modelos animales para el estudio del dolor agudo o crónico, así como para el estudio de las principales comorbilidades resultantes de su cronicidad, como la ansiedad y la depresión. Esta revisión se centra en los modelos animales más utilizados en este contexto.

CB1-cannabinoid-, TRPV1-vanilloid- and NMDA-glutamatergic-receptor-signalling systems interact in the prelimbic cerebral cortex to control neuropathic pain symptoms.

Neuropathic pain (NP) is a challenge due to our limited understanding of the mechanisms that initiate and maintain chronic pain. The prelimbic division (PrL) of the medial prefrontal cortex (mPFC) is an important area of the emotional and cognitive components of pain and pharmacological systems can interact into the neocortex to elaborate the chronic pain. This work aimed to investigate the pharmacological cross-talk between synaptic neurotransmission, neuroanatomical approaches and NP conditions. A bidirectional neural tract tracer, the 3000-molecular-weight biodextran (BDA) was microinjected into the PrL cortex. The mechanical withdrawal threshold (MWT) was recorded by a von Frey test, and the effect of prelimbic cortex CB1, NMDA, and TRPV1 receptor modulation was evaluated 21 days after chronic constriction injury (CCI) of the sciatic nerve in male Wistar rats. Microinjection of a bidirectional neurotracer in the PrL cortex showed connections with the lateral division of the mediodorsal thalamic nucleus (MDL), central division of the mediodorsal thalamic nucleus (MDC), centrolateral thalamic nucleus (CL), ventromedial thalamic nucleus (VM), and the paracentral thalamic nucleus (PC). In detail, AM251, a CB1 receptor antagonist (at 50, 100 and 200 pmol) microinjections intra-PrL cortex decreased the MWT. Administrations of 6-iodonordihydrocapsaicin (6-I-CPS), a transient receptor potential vanilloid type 1 (TRPV1) antagonist, at 3 nmol and the endocannabinoid anandamide (AEA) at 50 and 100 pmol increased the MWT. AEA at 200 pmol injected in the PrL cortex decreased the MWT, and this hyperalgesic effect was blocked by 6-I-CPS at 3 nmol. The AEA (at 100 pmol) anti-allodynic effect was attenuated by AM251 (at 5 pmol). The TRPV1 selective agonist N-oleoyldopamine (OLDA) at 10 µM decreased the MWT. The blockade of the NMDA receptor with LY235959 (at 8 nmol) and 6-I-CPS (at 3 nmol) reversed the OLDA (at 10 µM) hyperalgesic effect. These findings showed that the PrL cortex sends pathways to thalamic nuclei that can mediate the nociception. We also suggest that the PrL cortex is involved in the potentiation and maintenance of mechanical allodynia by NMDA and TRPV1 receptor activation and that attenuation of this allodynia depends on CB1 receptor activation during NP.

Bilingualism in the development of phonological awareness skills: an integrative literature review / O bilinguismo no desenvolvimento das habilidades de consciência fonológica: revisão integrativa da literatura

ABSTRACT Purpose: to verify the influence of bilingualism on the development of phonological awareness. Methods: this is an integrative literature review, built on the hypothesis of the relationship between bilingualism and its influence on the development of phonological skills in children. The construction was carried out in the databases: CAPES, Pubmed, Scielo, Eric, and LILACS, using the following free terms in Portuguese and English: bilingualism AND phonology, bilingualism AND phonological awareness and bilingualism AND phonological skills. The sample selection criteria were: a) scientific papers published in national and international journals with full text, free and available in the database; b) in English and Portuguese; c) that addressed the theme in the last five years. For the selection of the papers, reading the title, followed by the summary, and finally, reading the papers potentially relevant for review were considered. Results: following the eligibility criteria, 2,578 papers were identified. Of these, 87 were selected for complete analysis. The final sample consisted of eight papers, two of them being written by Brazilian authors. Of these, five showed better phonological awareness skills in bilinguals and two in monolinguals. Studies point out that age can be a predictor of language skills and better phonological awareness skills associated with good reading development. Bilinguals, early exposed to this skill, develop reading by phonology and those with late exposition, by semantics. Conclusion: the present study demonstrated that there are still controversies regarding the impacts of bilingualism on phonological awareness, including on the benefits of phonological awareness.

RESUMO Objetivo: verificar a influência do bilinguismo no desenvolvimento da Consciência Fonológica. Métodos: trata-se de uma revisão de literatura integrativa, construída a partir da hipótese de questionamento sobre a relação entre o bilinguismo e sua influência no desenvolvimento das habilidades fonológicas em crianças. A construção foi realizada nas bases de dados: Periódico CAPES, Pubmed, Scielo, Eric e LILACS, utilizando os seguintes termos livres em português e inglês: bilingualism AND phonology, bilingualism AND phonological awareness e bilingualism AND phonological skills. Os critérios de elegibilidade foram: a) artigos publicados em periódicos nacionais e internacionais com texto completo, gratuito e disponível na base de dados; b) em inglês e português; c) que abordassem a temática nos últimos cinco anos. Para a seleção dos artigos foram considerados a leitura pelo título, seguida do resumo e finalmente, a leitura dos artigos completos, potencialmente relevantes para a revisão. Resultados: seguindo os critérios de elegibilidade foram identificados 2.578 artigos. Destes, 87 foram selecionados para a leitura completa. A amostra final foi composta por 8 artigos, sendo 2 artigos de autores brasileiros. Destes, cinco artigos apresentaram melhor habilidade de consciência fonológica nos bilíngues e dois nos monolíngues. Estudos apontam que a idade pode ser um preditor de domínio da língua e de melhores habilidades de consciência fonológica associada ao bom desenvolvimento da leitura. Bilíngues expostos precocemente desenvolvem a leitura pela fonologia e os expostos tardiamente pela semântica. Conclusão: o presente estudo demonstrou que ainda há controvérsias quanto aos impactos do bilinguismo na consciência fonológica, inclusive sobre os benefícios na consciência fonológica.