Chitosan-based films filled with nanoencapsulated essential oil: Physical-chemical characterization and enhanced wound healing activity.

The economic burden of chronic wounds, the complexity of the process of tissue repair and the possibility of resistant bacterial infections, have triggered a significant research interest in the application of natural alternative therapies for wound healing. Biomolecules are intrinsically multi-active, as they affect multiple mechanisms involved in tissue repair phenomenon, including immunomodulatory, anti-inflammatory, cell proliferation, extra cellular matrix remodeling and angiogenesis. Chitosan features a unique combination of attributes, including intrinsic hemostatic, antimicrobial, and immunomodulatory properties, that make it an exceptional candidate for wound management, in the development of wound dressings and scaffolds. In this study, we produced nanoemulsions (NE) loaded with SFO, characterized them, and evaluated their tissue repairing properties. Dynamic light scattering (DLS) analysis confirmed the formation of a nanoemulsion with a droplet size of 21.12 ± 2.31 nm and a polydispersity index (PdI) of 0.159, indicating good stability for up to 90 days. To investigate the potential wound healing effects, SFO-loaded NE were applied on male C57BL/6 mice for seven consecutive days, producing a significantly higher wound closure efficiency (p < 0.05) for the group treated with SFO-loaded NE compared to the control group treated with the saline solution. This finding indicates that the SFO-loaded NE exhibits therapeutic properties that effectively promote wound healing in this experimental model. Then, SFO-loaded NE were incorporated into chitosan:polyvinyl alcohol (PVA)-based films. The inclusion of NE into the polymer matrix resulted in increased lipophilicity reflected by the contact angle results, while decreasing moisture absorption, water solubility, and crystallinity. Moreover, FTIR analysis confirmed the formation of new bonds between SFO-NE and the film matrix, which also impacted on porosity properties. Thermal analysis indicated a decrease in the glass transition temperature of the films due to the presence of SFO-NE, suggesting a plasticizing role of NE, confirmed by XRD results, that showed a decrease in the crystallinity of the blend films upon the addition of SFO-NE. AFM images showed no evidence of NE droplet aggregation in the Chitosan:PVA film matrix. Moisture absorption and water content decreased upon incorporation of SFO-loaded NE. Although the inclusion of NE increased hydrophobicity and water contact angle, the values remained within an acceptable range for wound healing applications. Overall, our results emphasize the significant tissue repairing properties of SFO-loaded NE and the potential of Chitosan:PVA films containing nanoencapsulated SFO as effective formulations for wound healing with notable tissue repairing properties.

A Strategy Utilizing Protein-Protein Interaction Hubs for the Treatment of Cancer Diseases.

We describe a strategy for the development of a rational approach of neoplastic disease therapy based on the demonstration that scale-free networks are susceptible to specific attacks directed against its connective hubs. This strategy involves the (i) selection of up-regulated hubs of connectivity in the tumors interactome, (ii) drug repurposing of these hubs, (iii) RNA silencing of non-druggable hubs, (iv) in vitro hub validation, (v) tumor-on-a-chip, (vi) in vivo validation, and (vii) clinical trial. Hubs are protein targets that are assessed as targets for rational therapy of cancer in the context of personalized oncology. We confirmed the existence of a negative correlation between malignant cell aggressivity and the target number needed for specific drugs or RNA interference (RNAi) to maximize the benefit to the patient's overall survival. Interestingly, we found that some additional proteins not generally targeted by drug treatments might justify the addition of inhibitors designed against them in order to improve therapeutic outcomes. However, many proteins are not druggable, or the available pharmacopeia for these targets is limited, which justifies a therapy based on encapsulated RNAi.

Virtual reality as a telerehabilitation strategy for people with autism spectrum disorder during the COVID-19 quarantine scenario: physical activity, motor performance and enjoyment.

PURPOSE: People with autism spectrum disorder could benefit from physical activity during the pandemic and COVID-19 restrictions, mainly to maintain adequate physical activity. We aimed to evaluate the feasibility, enjoyment, and potential effect of telerehabilitation using a serious game named 'MoveHero'. MATERIALS AND METHODS: Registered in Clinical Trials (NCT04402034). We adopted a remotely run Telerehabilitation research design with 44 participants recruited: 22 People with ASD people and 22 non-ASD individuals. RESULTS: All participants safely participated, 100% adherence to sessions, ∼60% enjoying the task, and significantly improved performance, with better performance for the NA group at most practice moments. CONCLUSIONS: Our findings support both how to implement a gaming intervention and the need to investigate the efficacy of serious games to motivate moderate intensity physical activity in people with ASD.

A new and thrilling way to promote physical activity is through telerehabilitation to people with Autism Spectrum Disorder.A tool that can possibly influence the mood of people with Autism Spectrum Disorder.Help to implement home-based rehabilitation to people with Autism Spectrum Disorder.

Association of physical activity and sitting with metabolic syndrome and hyperglycemic clamp parameters in adolescents - BRAMS pediatric study.

Introduction: Obesity and metabolic syndrome (MetS) have immediate and long-term consequences on adolescent health and well-being. Among the available treatments for MetS in adolescents, behavioral interventions such as increasing physical activity (PA) are preferred. This study aimed to investigate the association of PA and sitting time with MetS and a complete set of metabolic health parameters. Methods: Data from the Pediatric Brazilian Metabolic Syndrome Study (BRAMS-P), a cross-sectional multicenter study conducted using a convenience sample of 448 Brazilian adolescents (10y-19y), were used. Sociodemographic and lifestyle information were collected using a standardized questionnaire. Daily PA and sitting time were estimated from the International PA Questionnaire. Anthropometric parameters, body composition, and blood pressure were measured by trained researchers. Blood lipids, uric acid, hepatic enzymes, creatinine, glycated hemoglobin, glucose, and insulin were measured in fasting blood samples, and the Homeostasis Model Assessment for Insulin Resistance was calculated. A subsample of 57 adolescents underwent the hyperglycemic clamp protocol. Results: The odds for metabolic syndrome were higher among adolescents who spent >8h sitting (OR (95%CI)=2.11 (1.02 - 4.38)), but not in those classified as active (OR (95%CI)=0.98 (0.42 - 2.26)). Adolescents who spent more time sitting had higher BMI, waist circumference, sagittal abdominal diameter, neck circumference, percentage of body fat, and worse blood lipid profile. The insulin sensitivity index was moderately and positively correlated with moderate-to-high PA in minutes per day (rho=0.29; p=0.047). Conclusion: Time spent sitting was associated with worse metabolic parameters and must be restricted in favor of adolescent health. Regular PA is associated with improved insulin sensitivity and may be encouraged not only in adolescents with obesity or metabolic disorders but also to prevent adverse metabolic outcomes in normal-weight adolescents.

Analysis of Heart Rate, Perception of Physical Effort and Performance of Individuals with Down Syndrome Submitted to a Protocol of Virtual Games for Home-Based Telerehabilitation.

Down syndrome (DS) is a genetic condition associated with impairments in several body systems, which may negatively influence the habit of practicing physical activities (PAs), increasing sedentary habits and the risk of comorbidities. Additionally, difficulty in accessing services, financial limitations and lack of interest may interfere with the practice of PAs. Considering the necessity of developing effective treatment alternatives, to increase the possibility of access and the interest of participants, we conducted a study using telerehabilitation with a virtual task to promote PA and analyze the motor performance of DS individuals. Our protocol consisted of 11 sessions of the virtual game called MoveHero. A total of 34 individuals with DS and 34 individuals with typical development participated in the study. Heart rate (HR) and rating of perceived effort (RPE) were collected at rest and during the game. Our results show that virtual reality presents a great possibility to promote PA and a way out of a sedentary lifestyle for DS individuals, considering the enhancement in HR and RPE found during the protocol for both groups. Moreover, our results show positive outcomes regarding motor performance, with significant improvement in the task with practice, demonstrating that individuals with DS are able to improve their motor proficiency with adequate stimuli in the virtual environment.

Learning challenges in Physical Therapy, Speech-Language-Hearing Sciences, and Occupational Therapy undergraduate programs during the COVID-19 pandemic.

PURPOSE: COVID-19 posed numerous challenges to educational programs that had to quickly adapt to remote online learning (ROL) to ensure the continuity of health professional training over the pandemic. We aimed to assess the students' and professors' perceptions of the teaching-learning process in the Physical Therapy, Speech-Language-Hearing Sciences, and Occupational Therapy undergraduate programs at a Brazilian public university. METHODS: We used an electronic self-reported questionnaire with multiple-choice questions on a Likert scale ranged 1-5; higher the score, higher the level of agreement/importance/satisfaction. RESULTS: Most of undergraduate students and teachers had previous experience using information and communication technologies, and 85% stated their preference for in-person learning. Students expressed their appreciation for more active learning methodologies with clear objectives, accessible content, and visualization of abstract concepts. Regarding benefits and barriers, some similar perceptions were observed between students and teachers with ROL favoring time management, benefits in the teaching-learning process, satisfaction and motivation with the course content, and low attendance rates to general academic activities due to absent or poor access to technological resources. CONCLUSION: ROL is an alternative learning mode when the in-person classes cannot be carried out, as in the case of the COVID-19 pandemic. ROL is believed to be unfit to replace in-person learning, although it can complement the traditional classroom-based education in a hybrid model, respecting the nature of each program in the field of health that requires in-person practical training.

Gait Training with Functional Electrical Stimulation Improves Mobility in People Post-Stroke.

(1) Background: Stroke is one of the leading causes of disability. To identify the best treatment strategies for people with stroke (PwS), the aim of the current study was to compare the effects of training on a treadmill with functional electrical stimulation (TT-FES) with training on a treadmill (TT), and to analyze the effects of sequence of training on mobility and the parameters of walking ability. (2) Methods: Prospective, longitudinal, randomized and crossover study, in which 28 PwS were distributed into groups, namely the A-B Group (TT-FES followed by TT) and B-A Group (TT followed by TT-FES), using the foot drop stimulator, and were measured with functional tests. (3) Results: We found improved mobility, balance, non-paretic limb coordination, and endurance only in the group that started with TT-FES. However, sensorimotor function improved regardless of the order of training, and paretic limb coordination only improved in the B-A Group, but after TT-FES. These data indicate that the order of the protocols changed the results. (4) Conclusions: Although biomechanical evaluation methods were not used, which can be considered a limitation, our results showed that TT-FES was superior to isolated training on a treadmill with regard to balance, endurance capacity, and coordination of the non-paretic limb.

Cardiac autonomic modulation in response to postural transition during a virtual reality task in individuals with spinal cord injury: A cross-sectional study.

PURPOSE: The postural transition from sitting to standing is a moment of dysautonomic occurrence in individuals with Spinal Cord Injury (SCI). Different tools can be used to minimize this event, such as virtual reality. Thus, we aimed to analyze cardiac autonomic modulation in individuals with SCI during postural transition from the sitting to orthostatism position using a cognitive virtual reality (VR) task. METHODS: Individuals with and without SCI were positioned on the Easy Stand® device, sitting at rest, at 0° considering the angle between the seat and the floor, elevation at 45°, and orthostatism at 90°, for 5 minutes in each position. Heart rate variability (HRV) measures of sympathovagal balance were collected (heart rate receiver: Polar V800). The groups were subdivided into two groups, one that performed VR as an intervention during the postural angle changes and another group that did not perform VR. RESULTS: We evaluated 76 individuals, 40 with a medical diagnosis of SCI and 36 who composed the able-bodied control group without SCI, matched by age and sex. The HRV results showed that the SCI group who performed the task in VR demonstrated no significant difference in parasympathetic activation and global variability between the sitting versus 90° positions. There was better sympathovagal balance in SCI and able-bodied control groups who performed the VR task between the sitting versus 90° positions. CONCLUSION: The use of a VR task seems to contribute to better sympathovagal balance, with the potential to reduce dysautonomia during postural changes.

SARS-CoV-2 Spike protein induces TLR4-mediated long-term cognitive dysfunction recapitulating post-COVID-19 syndrome in mice.

Cognitive dysfunction is often reported in patients with post-coronavirus disease 2019 (COVID-19) syndrome, but its underlying mechanisms are not completely understood. Evidence suggests that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Spike protein or its fragments are released from cells during infection, reaching different tissues, including the CNS, irrespective of the presence of the viral RNA. Here, we demonstrate that brain infusion of Spike protein in mice has a late impact on cognitive function, recapitulating post-COVID-19 syndrome. We also show that neuroinflammation and hippocampal microgliosis mediate Spike-induced memory dysfunction via complement-dependent engulfment of synapses. Genetic or pharmacological blockage of Toll-like receptor 4 (TLR4) signaling protects animals against synapse elimination and memory dysfunction induced by Spike brain infusion. Accordingly, in a cohort of 86 patients who recovered from mild COVID-19, the genotype GG TLR4-2604G>A (rs10759931) is associated with poor cognitive outcome. These results identify TLR4 as a key target to investigate the long-term cognitive dysfunction after COVID-19 infection in humans and rodents.

The use of serial casting in the treatment of children with cerebral palsy: a study protocol

Introduction: Cerebral Palsy (CP) is characterized by a disorder of posture and movement, commonly leading to disabling orthopedic alterations, including muscle shortening, especially in the lower limbs. Stretching methods, performed gradually, are necessary to delay the impairment in function from muscle shortening. The use of serial casting aims to promote proper alignment, and an ideal and stable support base, in addition to better bone and joint health, leading to better posture, mobility, muscle function, and, subsequently, increased fitness and health.Objective: evaluate range of motion, postural control, and motor performance in children with CP, using serial casting, as well as to measure its effect on fitness through the autonomic nervous system (ANS).Methods: Sixty children and adolescents with CP, of both sexes, 3 to 12 years of age, will be divided into three groups: Groups A, B, and C, with 20 individuals each. Group A will use serial casting, Group B will use the orthosis continuously (with removal only allowed for bathing), and Group C will use the orthosis in their daily routine. Range of motion of the ankle of first and second resistance levels (R1 and R2), gross motor function measure (GMFM), and balance (measured by BERG scale) will be used in the initial and final assessments, and after 6 months and one year of follow-up. Timed-up-and-go (TUG), load distribution (baropodometry), motor performance measured through a real basketball game and the virtual MoveHero game, analysis of body angulation with "mydartfish", and cardiac autonomic modulation through heart rate variability will be assessed in three different situations: barefoot, with orthosis, and with casting.Conclusion: Serial casting demonstrates the potential to produce positive results in the treatment of individuals with CP regarding better alignment, with consequent motor and autonomic improvement.

Bilateral Transfer of Performance between Real and Non-Immersive Virtual Environments in Post-Stroke Individuals: A Cross-Sectional Study.

(1) Background: Post-stroke presents motor function deficits, and one interesting possibility for practicing skills is the concept of bilateral transfer. Additionally, there is evidence that the use of virtual reality is beneficial in improving upper limb function. We aimed to evaluate the transfer of motor performance of post-stroke and control groups in two different environments (real and virtual), as well as bilateral transfer, by changing the practice between paretic and non-paretic upper limbs. (2) Methods: We used a coincident timing task with a virtual (Kinect) or a real device (touch screen) in post-stroke and control groups; both groups practiced with bilateral transference. (3) Results: Were included 136 participants, 82 post-stroke and 54 controls. The control group presented better performance during most parts of the protocol; however, it was more evident when compared with the post-stroke paretic upper limb. We found bilateral transference mainly in Practice 2, with the paretic upper limb using the real interface method (touch screen), but only after Practice 1 with the virtual interface (Kinect), using the non-paretic upper limb. (4) Conclusions: The task with the greatest motor and cognitive demand (virtual-Kinect) provided transfer into the real interface, and bilateral transfer was observed in individuals post-stroke. However, this is more strongly observed when the virtual task was performed using the non-paretic upper limb first.

Nanosystems for gene therapy targeting brain damage caused by viral infections.

Several human pathogens can cause long-lasting neurological damage. Despite the increasing clinical knowledge about these conditions, most still lack efficient therapeutic interventions. Gene therapy (GT) approaches comprise strategies to modify or adjust the expression or function of a gene, thus providing therapy for human diseases. Since recombinant nucleic acids used in GT have physicochemical limitations and can fail to reach the desired tissue, viral and non-viral vectors are applied to mediate gene delivery. Although viral vectors are associated to high levels of transfection, non-viral vectors are safer and have been further explored. Different types of nanosystems consisting of lipids, polymeric and inorganic materials are applied as non-viral vectors. In this review, we discuss potential targets for GT intervention in order to prevent neurological damage associated to infectious diseases as well as the role of nanosized non-viral vectors as agents to help the selective delivery of these gene-modifying molecules. Application of non-viral vectors for delivery of GT effectors comprise a promising alternative to treat brain inflammation induced by viral infections.

Association of serum and erythrocyte zinc levels with breastfeeding and complementary feeding in preterm and term infants.

Zinc is an important nutrient involved in cell division, physical growth, and immune system function. Most studies evaluating the nutritional status related to zinc and prematurity were conducted with hospitalized preterm infants. These studies show controversial results regarding the prevalence of deficiency, clinical implications, and the effect of zinc supplementation on mortality, infectious diseases, and growth in these groups. This study aimed to compare serum and erythrocyte zinc levels in a group of preterm and full-term infants after 9 months of age, and related the zinc levels to dietary intake and anthropometric indicators in both groups. This cross-sectional study compared 43 preterm infants (24 to 33 weeks) aged 9-24 months to 47 full-term healthy infants. Outcome measures: anthropometric indicators and dietary intake. Blood sample for serum and erythrocyte zinc levels (ICP-MS, Inductively Coupled Plasma Mass Spectrometry). There was no difference between the groups regarding the mean of serum and erythrocyte zinc. Variables associated with higher serum zinc levels were breastfeeding at evaluation (ß = 20.11 µg/dL, 95% CI 9.62-30.60, p < 0.001) and the later introduction of solid foods (ß = 6.6 µg/dL, 95% CI 5.3-11.4, p < 0.001). Breastfeeding was also associated with higher erythrocyte zinc levels. The zinc levels were adequate in both groups, there was no association with anthropometric indicators or dietary intake and were slightly influenced by breastfeeding and time of solid food introduction.

Comportamento de idosos para a promoção da saúde: análise segundo a teoria de Nola Pender / Older adults' behavior for health promotion: analysis according to Nola Pender's theory / Comportamiento de ancianos para promover la salud: análisis según la teoría de Nola Pender

Objetivo: Analisar o comportamento de idosos em relação à promoção da saúde segundo a teoria de Nola Pender. Métodos: Pesquisa participante de abordagem qualitativa, realizada em uma Instituição de Ensino Superior de Brasília (Distrito Federal), Brasil. Os dados foram coletados ao longo de quatro encontros presenciais, por meio da estratégia de grupo de reflexão, com base em questões norteadoras especificas para cada encontro. Para a análise dos dados, utilizou-se a Teoria de Promoção da Saúde de Nola Pender que pressupõe a avaliação de características e experiências individuais, dos sentimentos e conhecimentos sobre o comportamento que se quer alcançar e do comportamento de promoção da saúde desejável. Resultados: Participaram 13 idosos, os quais revelaram que a autoestima, o trabalho e a participação em diversas atividades familiares, culturais e religiosas os ajudam a realizar ações que promovem sua saúde. Eles desejam modificar alguns comportamentos e conservar outros, em função do beneficio percebido. influências interpessoais e situações como renda, doenças, religião, escolaridade e acesso a bens e serviços são apontados como fatores que influenciam as mudanças de comportamento em saúde. Conclusão: o comportamento dos idosos revelou esforços para manter e ampliar sua saúde e graus de autonomia.

Objective: To analyze older adults' behavior in relation to health promotion according to Nola Pender's theory. Methods: This is participatory research with a qualitative approach, carried out at a Higher Education Institution in Brasília (Federal District), Brazil. Data were collected over four on-site meetings, through the reflection group strategy, based on specific guiding questions for each meeting. For data analysis, Nola Pender's Health Promotion Theory was used, which presupposes assessing individual characteristics and experiences, behavior-specific cognitions and affect and behavioral outcome. Results: The study included 13 older adults, who revealed that self-esteem, work and participation in various family, cultural and religious activities help them carry out actions that promote their health. They wish to modify some behaviors and maintain others, depending on the perceived benefit. Interpersonal influences and situations such as income, illness, religion, education and access to goods and services are highlighted as factors that influence changes in health behavior. Conclusion: Older adults' behavior revealed efforts to maintain and expand their health and degrees of autonomy.

Objetivo: Analizar el comportamiento de los ancianos frente a la promoción de la salud desde la perspectiva del modelo teórico de Nola Pender. Métodos: Estudio de investigación participante con abordaje cualitativo, con 13 ancianos. Los datos fueron recolectados a través de la estrategia de grupos de reflexión, a partir de preguntas orientadoras elaboradas por los investigadores. Se utilizó la Teoría de Enfermería de Promoción de la Salud de Nola Pender. Resultados: Hubo interrelación entre las características y vivencias individuales de los ancianos, sus sentimientos y conocimientos sobre el comportamiento deseado y el comportamiento deseado de promoción de la salud. Conclusión: Este estudio permite reflexionar sobre las condiciones y motivaciones que llevan a los ancianos a tener determinados comportamientos, que influyen en su estado de salud. Contribuciones para la práctica: Reflexión de los profesionales de la salud sobre la creación de nuevas estrategias para la implementación de acciones de promoción de la salud de la población anciana.

Tempo de tela e prática de atividade física entre universitários durante a pandemia / Screen time and physical activity among university students during the pandemic

As Doenças Crônicas não Transmissíveis representam um problema de saúde pública a nível mundial, e são resultantes da combinação de distintos fatores de risco, a exemplo a prática insuficiente de atividade física e o uso excessivo de dispositivos eletrônicos. Identificar a frequência da prática de atividade física e do uso de dispositivos eletrônicos e televisão entre estudantes universitários. Trata-se de um estudo transversal com abordagem quantitativa realizado com 87 universitários de uma IES privada do Distrito Federal no segundo semestre de 2020. A coleta de dados foi realizada mediante questionário eletrônico estruturado. Para a análise dos dados foi utilizado a estatística descritiva através do software Statistical Package for Social Sciences (SPSS) versão 21.0. Observou-se que 63 (72,4%) estudantes relataram praticar algum tipo de atividade física nos últimos três meses. No que diz respeito a frequência da prática de atividade física, 53 (60,9%) discentes relataram praticar por pelo menos uma vez na semana, e 21 (24,1%) informaram a prática de 3 a 4 dias por semana. Quanto ao uso de dispositivos eletrônicos, observou-se que 80 (92,0%) discentes referiram utilizá-los em seu tempo livre, o tempo de uso mais relatado foi de 2-3 horas. Observou-se uma frequência elevada da utilização de dispositivos eletrônicos e da prática insuficiente de atividade física entre universitários durante a pandemia de COVID-19. Sendo assim, é crucial o estabelecimento de intervenções de promoção para adoção de hábitos de vida saudáveis para este grupo.

Chronic Noncommunicable Diseases represent a public health problem worldwide and are the result of a combination of different risk factors such as insufficient physical activity and excessive use of electronic devices. To identify the frequency of physical activity and the use of electronic devices and television among college students. This is a cross-sectional study with a quantitative approach carried out with 87 university students from a private Higher Education Institution in the Federal District during the second half of 2020. Data collection was performed using a structured electronic questionnaire. Descriptive statistics were used for data analysis using the Statistical Package for Social Sciences (SPSS) version 21.0 software. It was observed that 63 (72.4%) students reported practicing some type of physical activity in the last three months. Concerning the frequency of physical activity, 53 (60.9%) students reported practicing at least once a week, and 21 (24.1%) reported practicing 3 to 4 days a week. As for the use of electronic devices, it was observed that 80 (92.0%) students reported using them in their free time, the most reported time of use was 2-3 hours. There was a high frequency of use of electronic devices and insufficient practice of physical activity among university students during the COVID-19 pandemic. Therefore, it is crucial to establish interventions to promote the adoption of healthy lifestyle habits for this group.

Learning challenges in Physical Therapy, Speech-Language-Hearing Sciences, and Occupational Therapy undergraduate programs during the COVID-19 pandemic / Desafios de aprendizagem nos cursos de graduação em Fisioterapia, Fonoaudiologia e Terapia Ocupacional durante a pandemia de COVID-19

ABSTRACT Purpose COVID-19 posed numerous challenges to educational programs that had to quickly adapt to remote online learning (ROL) to ensure the continuity of health professional training over the pandemic. We aimed to assess the students' and professors' perceptions of the teaching-learning process in the Physical Therapy, Speech-Language-Hearing Sciences, and Occupational Therapy undergraduate programs at a Brazilian public university. Methods We used an electronic self-reported questionnaire with multiple-choice questions on a Likert scale ranged 1-5; higher the score, higher the level of agreement/importance/satisfaction. Results Most of undergraduate students and teachers had previous experience using information and communication technologies, and 85% stated their preference for in-person learning. Students expressed their appreciation for more active learning methodologies with clear objectives, accessible content, and visualization of abstract concepts. Regarding benefits and barriers, some similar perceptions were observed between students and teachers with ROL favoring time management, benefits in the teaching-learning process, satisfaction and motivation with the course content, and low attendance rates to general academic activities due to absent or poor access to technological resources. Conclusion ROL is an alternative learning mode when the in-person classes cannot be carried out, as in the case of the COVID-19 pandemic. ROL is believed to be unfit to replace in-person learning, although it can complement the traditional classroom-based education in a hybrid model, respecting the nature of each program in the field of health that requires in-person practical training.

RESUMO Objetivo O COVID-19 impôs inúmeros desafios aos programas educacionais que tiveram que se adaptar rapidamente ao aprendizado remoto on-line (ARO) para garantir a continuidade da formação dos profissionais de saúde durante a pandemia. O objetivo do estudo foi avaliar a percepção de alunos e professores sobre o processo ensino-aprendizagem dos cursos de graduação em Fisioterapia, Fonoaudiologia e Terapia Ocupacional de uma universidade pública brasileira. Métodos Foi utilizado um questionário eletrônico autoaplicável com questões de múltipla escolha em escala Likert de 1 a 5; quanto maior a pontuação, maior o nível de concordância/importância/satisfação. Resultados A maioria dos alunos de graduação e professores tinha experiência anterior no uso de tecnologias de informação e comunicação, e 85% afirmaram preferir o ensino presencial. Os alunos expressaram preferência por metodologias de aprendizagem mais ativas, com objetivos claros, conteúdo acessível e visualização de conceitos abstratos. Em relação aos benefícios e barreiras, algumas percepções semelhantes foram observadas entre alunos e professores com ARO favorecendo a gestão do tempo, benefícios no processo ensino-aprendizagem, satisfação e motivação com o conteúdo do curso e baixa frequência às atividades acadêmicas gerais por ausência ou dificuldade de acesso aos recursos tecnológicos. Conclusão O ARO pode ser uma modalidade alternativa de aprendizado quando as aulas presenciais não podem ser realizadas, como no caso da pandemia do COVID-19. Porém, o ARO é inadequado para substituir a aprendizagem presencial, embora possa complementar a educação presencial tradicional em um modelo híbrido, respeitando a natureza de cada programa na área da saúde que exige formação prática presencial.

Effect of Longitudinal Practice in Real and Virtual Environments on Motor Performance, Physical Activity and Enjoyment in People with Autism Spectrum Disorder: A Prospective Randomized Crossover Controlled Trial.

(1) Background: People with ASD commonly present difficulty performing motor skills and a decline in physical activity (PA) level and low enjoyment of PA. We aimed to evaluate whether longitudinal practice of an activity in virtual and real environments improves motor performance and whether this improvement is transferred to a subsequent practice when changing the environment, promoting PA and providing enjoyment; (2) Methods: People with ASD, aged between 10 and 16 years, were included and distributed randomly into two opposite sequences. The participants performed a 10 session protocol, with five sessions practicing in each environment (virtual or real). Heart rate measurement was carried out and an enjoyment scale was applied; (3) Results: 22 participants concluded the protocol. Sequence A (virtual first) presented an improvement in accuracy and precision and transferred this when changing environment; they also had a greater change in heart rate reserve. The majority of participants reported "fun" and "great fun" levels for enjoyment; (4) Conclusions: The virtual reality activity presented a higher level of difficulty, with greater gains in terms of transference to the real environment. Considering PA, our task provided very light to light activity and the majority of participants enjoyed the task.

Phox2b mutation mediated by Atoh1 expression impaired respiratory rhythm and ventilatory responses to hypoxia and hypercapnia.

Mutations in the transcription factor Phox2b cause congenital central hypoventilation syndrome (CCHS). The syndrome is characterized by hypoventilation and inability to regulate breathing to maintain adequate O2 and CO2 levels. The mechanism by which CCHS impact respiratory control is incompletely understood, and even less is known about the impact of the non-polyalanine repeat expansion mutations (NPARM) form. Our goal was to investigate the extent by which NPARM Phox2b mutation affect (a) respiratory rhythm; (b) ventilatory responses to hypercapnia (HCVR) and hypoxia (HVR); and (c) number of chemosensitive neurons in mice. We used a transgenic mouse line carrying a conditional Phox2bΔ8 mutation (same found in humans with NPARM CCHS). We crossed them with Atoh1cre mice to introduce mutation in regions involved with respiratory function and central chemoreflex control. Ventilation was measured by plethysmograph during neonatal and adult life. In room air, mutation in neonates and adult did not greatly impact basal ventilation. However, Phox2bΔ8, Atoh1cre increased breath irregularity in adults. The HVR and HCVR were impaired in neonates. The HVR, but not HCVR, was still partially compromised in adults. The mutation reduced the number of Phox2b+/TH--expressing neurons as well as the number of fos-activated cells within the ventral parafacial region (also named retrotrapezoid nucleus [RTN] region) induced by hypercapnia. Our data indicates that Phox2bΔ8 mutation in Atoh1-expressing cells impaired RTN neurons, as well as chemoreflex under hypoxia and hypercapnia specially early in life. This study provided new evidence for mechanisms related to NPARM form of CCHS neuropathology.