Gastrointestinal symptoms are the first signs of fluoride (F) toxicity. In the present study, the jejunum of rats chronically exposed to F was evaluated by proteomics, as well as by morphological analysis. Wistar rats received water containing 0, 10 or 50 mgF/L during 30 days. HuC/D, neuronal Nitric Oxide (nNOS), Vasoactive Intestinal Peptide (VIP), Calcitonin Gene Related Peptide (CGRP), and Substance P (SP) were detected in the myenteric plexus of the jejunum by immunofluorescence. The density of nNOS-IR neurons was significantly decreased (compared to both control and 10 mgF/L groups), while the VIP-IR varicosities were significantly increased (compared to control) in the group treated with the highest F concentration. Significant morphological changes were seen observed in the density of HUC/D-IR neurons and in the area of SP-IR varicosities for F-treated groups compared to control. Changes in the abundance of various proteins correlated with relevant biological processes, such as protein synthesis, glucose homeostasis and energy metabolism were revealed by proteomics.

Ingested fluoride (F) is absorbed mainly in the small intestine, which is controlled by the Enteric Nervous System (ENS). Although important intestinal symptomatology has been described after excessive F exposure, there have been no studies reporting the effects of F on the ENS. In this study, the effects of chronic F exposure were evaluated on the duodenums of rats through proteomic and morphological analyses. Concentrations of 0, 10, or 50 ppm of F were applied to the drinking water for 30 days. Immunofluorescence techniques were performed in the myenteric plexus of the duodenum to detect HuC/D, neuronal nitric oxide (nNOS), vasoactive intestinal peptide (VIP), calcitonin gene related peptide (CGRP), and substance P (SP). The 50 ppm F group presented a significant decrease in the density of nNOS-IR neurons. Significant morphological alterations were also observed in HUC/D-IR and nNOS-IR neurons; VIP-IR, CGRP-IR, and SP-IR varicosities for both groups (10 and 50 ppm F). Proteomic analysis of the duodenum demonstrated alterations in the expression of several proteins, especially those related to important biological processes, such as protein polymerization, which helps to explain the downregulation of many proteins upon exposure to 50 ppm of F.

Our aim was to test the hypothesis that tele-supervised home-based exercise training (exercise) is an effective strategy for improving cardiovascular, respiratory, and functional capacity parameters in individuals that were hospitalized due to coronavirus disease 2019 (COVID-19). Thirty-two individuals (52 ± 10 years; 17F) randomly assigned to exercise (N = 12) and control groups (N = 20), had their anthropometric (weight, body mass index), hemodynamic (brachial and central blood pressure), vascular (arterial stiffness), ventilatory (pulmonary function and respiratory muscle strength), and functional parameters (handgrip strength, five-time sit to stand [FTSTS], timed up and go test [TUG] and six-minute walking test [6MWT]) assessed at baseline (30 to 45 days of hospital discharged) and after 12 weeks of follow-up. Both groups similarly increased (P < 0.001) forced vital capacity (absolute and % of predicted), forced expiratory volume in the first second (absolute and % of predicted), and handgrip strength during follow-up. However, only exercise group reduced carotido-femoral pulse wave velocity (-2.0 ± 0.6 m/s, P = 0.048), and increased (P < 0.05) resting oxygen saturation (1.9 ± 0.6 %), mean inspiratory pressure (24.7 ± 7.1 cmH2O), mean expiratory pressure (20.3 ± 5.8 cmH2O) and % of predicted mean expiratory pressure (14 ± 22 %) during follow-up. No significant changes were found in any other variable during follow-up. Present findings suggest that tele-supervised home-based exercise training can a potential adjunct therapeutic to rehabilitate individuals that were hospitalized due to COVID-19

Purpose: Chronic obstructive pulmonary disease (COPD) and abnormalities of left ventricular (LV) geometry often coexist. This study aimed to verify whether LV geometry is associated with airflow obstruction, functional capacity, and grip strength in COPD patients. Methods: Thirty-seven COPD patients (GOLD II, III, and IV) were allocated to three groups according to LV geometry as assessed by transthoracic echocardiography: normal (n = 13), concentric LV remodeling (n = 8), and concentric LV hypertrophy (LVH) (n = 16). Lung function was assessed using spirometry. The Duke Activity Status Index (DASI) was used to estimate functional capacity, and grip strength measurement was performed using a hydraulic hand dynamometer. Results: The concentric LVH group presented lower DASI scores (P = .045) and grip strength (P = .006) when compared with the normal group. Correlations analysis showed the following: relative wall thickness negatively correlated with forced expiratory volume in the first second (r = −0.380; P = .025) and DASI score (r = −0.387, P = .018); LV mass index negatively correlated with grip strength (r = −0.363, P = .038). Conclusions: In COPD patients, LV geometry is associated with airflow limitation, functional capacity, and grip strength. Specifically, concentric LV remodeling is associated with increased airflow limitation and decreased functional capacity whereas increased LV mass is associated with decreased grip strength.

No abstract

A diabetes mellitus tipo 2 (DM2) é uma doença prevalente em idosos e está associada à incapacidade funcional e anormalidades do metabolismo glicêmico. O treinamento multicomponente, composto por exercícios de força, equilíbrio, coordenação, marcha, agilidade e propriocepção, é recomendado para melhorar a função física de idosos, porém seus efeitos no tratamento da DM2 não estão claros. Objetivou-se investigar o efeito de um protocolo de treinamento multicomponente na aptidão funcional e parâmetros glicêmicos de idosos com DM2. Foram incluídos 13 idosos com DM2 e idade de 68 ± 6 anos. Antes e após o período de intervenção foram realizados os seguintes testes: chair stand, arm curl, sentar e alcançar, teste de caminhada de seis minutos (TC6M), glicemia de jejum e hemoglobina glicada (HbA1C). O programa de treinamento foi realizado por 16 semanas, três vezes/semana, em dias não consecutivos. Cada sessão consistiu de 10 minutos de aquecimento, 50 minutos de exercícios multicomponentes (coordenação, força muscular, flexibilidade, equilíbrio e agilidade) e 10 minutos de alongamento e relaxamento. Para a análise estatística foi utilizado o teste t pareado e teste de Wilcoxon (p<0,05). O treinamento induziu melhora nos testes arm curl (p = 0,001), sentar e alcançar (p = 0,004), TC6M (p = 0,009) e HbA1C (p = 0,01). Conclui-se que o protocolo de treinamento multicomponente promoveu melhora da aptidão funcional e do controle glicêmico em idosos com DM2. Entretanto, a glicemia de jejum e a força muscular de membros inferiores permaneceram inalteradas. Palavras-chave: Diabetes mellitus tipo 2. Idoso. Exercício físico. Aptidão física. Glicemia.

No abstract

RESUMO Na unidade de terapia intensiva (UTI) pediátrica, a falha de extubação pode aumentar o risco de mortalidade. Este estudo objetivou: (1) verificar a taxa de falha de extubação na UTI pediátrica de um hospital público do município de Bauru (São Paulo, Brasil); (2) identificar a principal causa atribuída à falha de extubação; (3) avaliar se características como a idade e o tempo de ventilação mecânica invasiva (VMI) estão associadas à falha de extubação; (4) avaliar se o tempo de permanência na UTI e hospital é maior entre os pacientes que apresentaram falha de extubação. Foi realizado estudo de coorte retrospectivo com 89 pacientes internados de maio de 2017 até julho de 2018. Os resultados mostraram taxa de falha de extubação correspondente a 16%. A principal causa atribuída à falha de extubação foi o estridor laríngeo, totalizando 57% dos casos. A comparação intergrupos (sucesso vs. falha de extubação) não mostrou diferenças em relação à idade (p=0,294) e ao tempo de VMI (p=0,228). No entanto, observamos que o grupo falha de extubação apresentou maior tempo de UTI (p=0,000) e hospital (p=0,010). Desta forma, concluímos que a taxa de extubação está de acordo com a observada em outros estudos. O estridor laríngeo foi responsável por mais da metade dos casos de falha de extubação. Embora a idade e o tempo de VMI não tenham sido características associadas à falha de extubação, esta contribuiu para o maior período de permanência na UTI e no hospital.