Avaliação do efeito genotóxico do aripiprazol em camundongos

Aripiprazol é um fármaco antipsicótico utilizado no tratamento da esquizofrenia. Neste trabalho, foi analisado o potencial genotóxico da administração aguda do fármaco em camundongos CF-1. Os animais receberam injeções intra-peritoniais de aripiprazol nas doses de 1, 3, 10 mg/kg. Amostras de sangue periférico foram coletadas 3 e 24 h após a administração das doses e tecido cerebral ao final do experimento (24 h), para a realização do ensaio cometa. Amostras de medula óssea foram coletadas para o teste de micronúcleos. Os resultados mostraram que o fármaco não apresentou efeitos genotóxicos e mutagênicos

Effects of a multidisciplinary program on autonomic modulation in overweight or obese children and adolescents

Purpose: this study evaluated the effects of a multidisciplinary program on autonomic modulation in overweight or obese children and adolescents. Methods: fi fteen individuals with 10,93±2,28 years were submitted to autonomic evaluation using heart rate variability before and after a program based on physical exercises for three months, three times a week, 60 minutes per session and psychological and nutritional counseling. Data was analyzed using the paired t-test or Wilcoxon test and the level of signifi cance was set at P < 0.05. Results: multidisciplinary program was able to promote benefi ts in autonomic modulation observed thought temporal (SDNN: 39,96 ± 10,33 x 49,44 ± 12,31; p = 0,019; rMSSD: 28,97 ± 11,50 x 37,26 ± 11,17; p = 0,018), spectral (LFnu: 64,49 ± 12,21 x 56,74 ± 11,18; p = 0,014; HFnu: 35,50 ± 12,21 x 43,25 ± 11,18; p = 0,014) and geometrical (SD1: 20,51 ± 8,13 x 26,36 ± 7,90; p = 0,018 SD2: 52,31 ± 13,04 x 64,58 ± 16,33; p = 0,031) indices in overweigh and obese children and adolescents. Also, after the intervention there was a reduction on resting heart rate (88,53 ± 9,24 x 83,09 ± 7,93; p = 0,023) and there were changes in the classifi cation of overweigh 26,67% x 46,66% and obesity 73,33% x 53,33%, although not significant changes in body mass index. Conclusions: exercise program together with nutritional and psychological counseling is able to promote benefi ts in autonomic modulation in children and adolescents who are overweight or obese

Dental Biofilm Microbiota Dysbiosis Is Associated With the Risk of Acute Graft-Versus-Host Disease After Allogeneic Hematopoietic Stem Cell Transplantation

Acute graft-versus-host disease (aGVHD) is one of the major causes of death after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Recently, aGVHD onset was linked to intestinal microbiota (IM) dysbiosis. However, other bacterial-rich gastrointestinal sites, such as the mouth, which hosts several distinctive microbiotas, may also impact the risk of GVHD. The dental biofilm microbiota (DBM) is highly diverse and, like the IM, interacts with host cells and modulates immune homeostasis. We characterized changes in the DBM of patients during allo-HSCT and evaluated whether the DBM could be associated with the risk of aGVHD. DBM dysbiosis during allo-HSCT was marked by a gradual loss of bacterial diversity and changes in DBM genera composition, with commensal genera reductions and potentially pathogenic bacteria overgrowths. High Streptococcus and high Corynebacterium relative abundance at preconditioning were associated with a higher risk of aGVHD (67% vs. 33%; HR = 2.89, P = 0.04 and 73% vs. 37%; HR = 2.74, P = 0.04, respectively), while high Veillonella relative abundance was associated with a lower risk of aGVHD (27% vs. 73%; HR = 0.24, P < 0.01). Enterococcus faecalis bloom during allo-HSCT was observed in 17% of allo-HSCT recipients and was associated with a higher risk of aGVHD (100% vs. 40%; HR = 4.07, P < 0.001) and severe aGVHD (60% vs. 12%; HR = 6.82, P = 0.01). To the best of our knowledge, this is the first study demonstrating that DBM dysbiosis is associated with the aGVHD risk after allo-HSCT

Factors associated with women's psychosocial profile during prenatal

Objective: analyze the factors associated with the psychosocial profile of women during prenatal care at the University Hospital – Maternal-Child Unit of the Federal University of Maranhão – HUUFMA. Methods: a cross-sectional study conducted with 160 pregnant women without age limit assisted at the HUUFMA Obstetrics Outpatient Clinic from March to October 2017. The assessment of the psychosocial profile was measured using the Prenatal Psychosocial Profile (PPP-VP). Results: most pregnant women, about 41.25% (66) had only completed high school; aged from 15 to 35 years old, about 65.66% (105); in the last gestational trimester 46.25% (74); most of them primigravid, 60% (96); with less than six prenatal appointments performed 67.52% (108). As for the gestational trimester, there was no statistical significance with the PPP-VP constructs; concerning parity, multiparas were the ones who showed more stress, and the Tukey test showed that this group had more stress when compared to nulliparas. Conclusion: it is pertinent to infer that about the gestational trimester, there was no influence on the constructs of the psychosocial profile, but when relating parity, the opposite situation was observed, especially in multiparous women, in which the greater number of births directly reflected in the maladjusted level of stress. Greater attention is necessary to these issues for adequate prenatal care.Objetivo: analisar os fatores associados ao perfil psicossocial de mulheres durante o pré-natal no Hospital Universitário – Unidade Materno Infantil da Universidade  Federal do Maranhão – HUUFMA.  Métodos: estudo transversal realizado com 160 gestantes sem limite de faixa etária, atendidas no Ambulatório de Obstetrícia do HUUFMA no período de março a outubro de 2017. A avaliação do perfil psicossocial foi mensurada por meio do Prenatal Psychosocial Profile (PPP-VP).  Resultados: a maioria das gestantes, cerca de 41,25% (66), possui somente o Ensino Médio completo, faixa etária de 15 a 35 anos , cerca de 65,66% (105), no último trimestre gestacional 46,25% (74), a maior parte primigesta, 60% (96), com menos de seis consultas pré-natais realizadas, 67,52% (108). Quanto ao trimestre gestacional, não houve significância estatística com os constructos do PPP-VP, relativo à paridade, as multíparas foram as que mais evidenciaram estresse e o teste de Tukey demonstrou que as multíparas tiveram mais estresse quando comparada com as nulíparas. Conclusão: é pertinente inferir que, em relação ao trimestre gestacional, não houve influência relativa aos  constructos do perfil psicossocial, porém ao se relacionar paridade, a situação contrária foi observada, principalmente em multíparas, onde o maior número de partos refletia diretamente no nível desajustado do estresse, sendo assim é necessária uma maior atenção a essas questões para uma assistência pré-natal adequada

Comparison of the Effects of Hydration with Water or Isotonic Solution on the Recovery of Cardiac Autonomic Modulation

Despite the importance of hydration during exercise, the impact of ingesting water or isotonic solution during and after exercise on the regulation of autonomic modulation is unclear. The study aimed to compare the effect of ingesting water or isotonic solution (Gatorade (R), Brazil) on cardiac autonomic modulation in young people after submaximal aerobic exercise. Thirty-one young men were subjected to a protocol consisting of 4 steps: 1) incremental test, 2) control protocol without hydration, 3) protocol with ingestion of water, and 4) protocol with ingestion of isotonic solution. The protocol consisted of 10 min of rest, 90 min of treadmill exercise at 60% VO2peak, and 60 min of recovery at rest. In the hydration protocols, hydration occurred during and after exercise, every 15 min beginning after the 15th minute of exercise, with the amount ingested proportional to body mass lost in the control protocol. Autonomic modulation was evaluated by heart rate variability. The hydration protocols promoted a more efficient recovery of autonomic modulation, and for the exercise performed, regardless of the hydration administered, the effect on autonomic modulation was similar.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP

Effects of water ingestion throughout exercise and recovery on cardiac autonomic modulation during and after exercise

Abstract Purpose: To analyze the effects of water intake on heart rate variability (HRV) during and after exercise. Methods: Thirty-one young males performed three different procedures: I) a maximal exercise test to determine the load for the protocols; II) the control protocol (CP); III) the experimental protocol (EP). The protocols comprised 10 minutes at rest, 90 minutes of treadmill exercise (60% of VO2 peak), and 60 minutes of recovery. No rehydration beverage consumption was allowed during the CP. During the EP, the participants were given water every 15 minutes, being that the amount of water to be ingested by each volunteer was divided over the time of exercise and recovery. For the analysis of HRV data, time and frequency domain indices were investigated in the following moments (M): M1 (5 minutes final of rest), M2 (25-30 minutes of exercise), M3 (55-60 minutes of exercise), M4 (85-90 minutes of exercise), M5 (5-10 minutes of recovery), M6 (15-20 minutes of recovery), M7 (25-30 minutes of recovery), M8 (40-45 minutes of recovery), and M9 (55-60 minutes of recovery). Results: There was no statistically significant difference between the groups that were examined during the exercise. HRV values for the CP and EP at the end of the exercise period were as follows SDNN (5.95±1.89 vs 6.89±2.11); RMSSD (3.29±0.78 vs 3.39±0.95); HF [nu] (24.06±14.26 vs 19.10±11.94); LF [nu] (75.93±14.26 vs 80.89±11.94); HF [ms2] (0.90±1.16 vs 0.94±0.89); LF [ms2] (4.65±5.94 vs 5.35±5.09); and LF/HF ratio (4.64±3.15 vs 6.95±5.57). HRV values for the CP and the EP at the end of the recovery period were as follows: SDNN (39.63±19.63 vs 49.95±17.79); RMSSD (21.63±15.55 vs 36.43±22.73); HF [ms2] (285.51±392.27 vs 699.29±699.66); LF [nu] (74.55±13.25 vs 61.19±19.27); and HF [nu] (25.44±13.25 vs 38.8±19.27). Conclusion: The hydration with water was not enough to significantly influence the linear HRV indices during exercise; however, it promoted faster recovery of these variables after exercise