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1.
Biosci. j. (Online) ; 37: e37032, Jan.-Dec. 2021. ilus, tab, graf
Artigo em Inglês | LILACS | ID: biblio-1359884

RESUMO

There is an increasing interest in the use of herbal remedies as healing agents, due to their lower cost in relation to other drugs and the vast Brazilian fauna. The objective of this research was to evaluate the cicatrization effect of the guariroba leaf (Campomanesia pubescens) on the healing of infected wounds. We used 45 Wistar rats, distributed in five groups (n = 9) all with surgically induced skin injury, differing in the presence of contamination and treatment, with evaluation periods of 3, 7 and 14 days, being: G1- negative control without contamination, treated with Physiological Solution 0.9%; G2- control with contamination, treated with Physiological Solution 0.9%; G3 negative with contamination, treated with Carbopol in 0.5% gel; G4- positive control with contamination, treated with Colagenase at 0.6 U / g + 0.01 g Chloramphenicol; G5- positive test with contamination treated with Campomanesia pubescens at 3%, whose vehicle was Carbopol at 0.5%. The wound was made with a metal punch 8 mm in diameter, and a cutaneous fragment was removed from the animals' backs and wound infection was applied to S. aureus in groups G2 to G5. Euthanasia was performed for a lethal dose of anesthetic, and the edges of the wounds were removed for histopathological study. The fibrinoleukocytic crust was present in all animals in the groups of 3, 7 and 14 days. The contraction of the wound was also evaluated, and all groups showed low percentage of wound regression in the 3-day treatment and with 14 days presented a high percentage of regression. Of the 5 groups, the only one that presented complete epithelialization was G5. Of the 5 groups, the ones with the best epithelialization were G4 and G5. The group with the highest amount of mature collagen fibers was G4, followed by G5, and the one with the highest proportion of immature fibers was G1. At the end of the experiment, G4 was the group that gained the most weight and G1 the one that had the lowest weight gain. Guariroba leaf extract (Campomanesia pubescens) was able to promote healing in infected skin wounds similar to the group treated with antibiotics.


Assuntos
Cicatrização , Infecção dos Ferimentos , Myrtaceae/química , Medicamento Fitoterápico
2.
JBI Evid Synth ; 18(6): 1313-1319, 2020 06.
Artigo em Inglês | MEDLINE | ID: mdl-32813380

RESUMO

OBJECTIVE: This systematic review aims to synthesize the available evidence on the effects of transcranial direct current stimulation on heart rate modulation, indexed by heart rate variability parameters in healthy individuals and those with clinical disorders. INTRODUCTION: There is some evidence that altered heart rate variability parameters are associated with different clinical disorders. For example, diminished parasympathetic activity has been explored as a potential biomarker for some chronic pain conditions. Considering the dynamic interaction between brain and heart, neuromodulatory strategies targeting this relationship could exert a positive influence on the cardiac autonomic system. Transcranial direct current stimulation is a non-invasive neuromodulation technique that has been presenting recent advances in the treatment of various clinical disorders. However, the evidence concerning transcranial direct current stimulation application focusing on brain-heart interaction is still controversial. INCLUSION CRITERIA: This review will consider studies that investigate the effects of transcranial direct current stimulation on heart rate variability in healthy participants or those with clinical disorders. METHODS: This review will follow JBI systematic review methodology recommendations. PubMed, Embase, CINAHL, Web of Science, PsycNET, Cochrane Controlled Register of Trials (CENTRAL) and Physiotherapy Evidence Database (PEDro) will be searched, along with several sources of gray literature. Retrieval of full-text studies, and assessment of methodological quality and data extraction, will be performed independently by two reviewers. Data will be pooled in statistical meta-analysis, where possible. SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO CRD42018114105.


Assuntos
Dor Crônica , Estimulação Transcraniana por Corrente Contínua , Encéfalo , Frequência Cardíaca , Humanos , Metanálise como Assunto , Revisões Sistemáticas como Assunto , Estimulação Magnética Transcraniana
3.
Biosci. j. (Online) ; 35(2): 629-639, mar./apr. 2019. tab, ilus
Artigo em Inglês | LILACS | ID: biblio-1048616

RESUMO

Neonatal sepsis is a clinical syndrome defined by systemic signs of infection in newborns accompanied by bacteremia. Can be responsible for serious consequences for the newborn child,characterized at the birth as early sepsis or late onset sepsis, with high rate of neonatal morbidity and mortality. Pathological agents such as Escherichia coli (E. coli), Streptococcus agalactiae (S. agalactiae), Ureaplasma urealyticum and Mycoplasma hominis are most often responsible for intrauterine infections. The objective of this study is to evaluate the factors of neonatal sepsis predisposition in pregnant women through histopathological examination and the apoptotic index of placental tissues and detect DNA of E. coli and S. agalactiae using the Polymerase Chain Reaction (PCR). Histopathological analyses were made and the apoptotic index was determined to verify the levels of possible inflammatory infiltrates and cell death. Placenta samples were collected from November 2013 to May 2014. After DNA extraction, a PCR was performed amplifying the target fragment from the conserved regions of the rpoB (beta-RNA polymerase) polymorphism of E. coli and the factor 1 of S. agalactiae. The apoptosis index was tested with Acridine Orange and the histological procedure with Hematoxylin-Eosin staining. Among 100 samples of placental tissues analyzed by PCR, 48 represented the control group and did not present a risk factor associated with neonatal sepsis, and 52 samples representing the study group had at least one risk factor. Among these 52 samples, 7 (13.4%) had a PCR positive for E. coli. No placenta samples showed a positive PCR for S. agalactiae. The quantification of the apoptotic index did not show statistical significances between the groups and no inflammatory infiltrates were observed. However, histological sections showed fibrinoid necrosis, infarct areas and areas of calcification in all samples. Therefore, the results allow to conclude that the seven patients of experimental group with positive PCR for E. coli had eminent risk factors of neonatal sepsis, and the infection of the urinary tract (UTI) is the main aggravating circumstance. The histopathological examination demonstrated that the risk factors caused significant alterations, producing fibrinoid necrosis and infarcted areas in the placenta, contrary to apoptotic index that didn't differ from the group with unprecedented risk


A sepse neonatal é uma síndrome clínica definida por sinais sistêmicos de infecção em recém-nascidos acompanhados de bacteremia. Pode ser responsável por sérias consequências para o recém-nascido, caracterizadas ao nascimento como sepse precoce ou sepse tardia, com alta taxa de morbidade emortalidade neonatal. Agentes patológicos como Escherichia coli (E. coli), Streptococcus agalactiae (S. agalactiae), Ureaplasma urealyticum e Mycoplasma hominis são mais frequentemente responsáveis por infecções intra-uterinas. O objetivo deste estudo é avaliar os fatores de predisposição da sepse neonatal em gestantes através do exame histopatológico e do índice apoptótico de tecidos placentários e detectar DNA de E. coli e S. agalactiae utilizando a reação em cadeia da polimerase (PCR). Análises histopatológicas foram realizadas e o índice apoptótico foi determinado para verificar os níveis de possíveis infiltrados inflamatórios e morte celular. Amostras de placenta foram coletadas de novembro de 2013 a maio de 2014. Após a extração de DNA, foi realizada uma PCR amplificando o fragmento alvo das regiões conservadas do polimorfismo rpoB (polimerase beta-RNA) de E. coli e o fator 1 de S. agalactiae. O índice de apoptose foi testado com alaranjado de acridina e o procedimento histológico com coloração de hematoxilina-eosina. Entre 100 amostras de tecidos placentários analisados por PCR, 48 representaram o grupo controle e não apresentaram fator de risco associado à sepse neonatal, e 52 amostras representativas do grupo de estudo apresentaram pelo menos um fator de risco. Entre essas 52 amostras, 7 (13,4%) apresentaram PCR positivo para E. coli. Nenhuma amostra de placenta foi positivo para S. agalactiae na PCR. A quantificação do índice apoptótico não mostrou significância estatística entre os grupos e não foram encontrados infiltrados inflamatórios. No entanto, cortes histológicos mostraram necrose fibrinóide, áreas de infarto e áreas de calcificação em todas as amostras. Portanto, os resultados permitem concluir que as sete pacientes do grupo experimental com PCR positivo para E. coliapresentavam fatores de risco eminentes de sepse neonatal, sendo a infecção do trato urinário (ITU), o principal agravante. O exame histopatológico demonstrou que os fatores de risco causaram alterações significativas, produzindo necrose fibrinóide e áreas infartadas na placenta, ao contrário o índice apoptótico que não diferiu do grupo sem precedentes de risco.


Assuntos
Placenta , Bacteriemia , Escherichia coli , Sepse Neonatal , Streptococcus agalactiae , Reação em Cadeia da Polimerase
4.
Braz J Cardiovasc Surg ; 33(2): 115-121, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29898139

RESUMO

OBJECTIVE: The aim of the present study was to evaluate the ability of ischemic postconditioning, atorvastatin and both associated to prevent or minimize reperfusion injury in the lung of rats subjected to ischemia and reperfusion by abdominal aortic clamping. METHODS: We used 41 Wistar norvegic rats, which were distributed into 5 groups: ischemia and reperfusion (I/R), ischemic postcondictioning (IPC), postconditioning + atorvastatin (IPC+A), atorvastatin (A) and SHAM. It was performed a medium laparotomy, dissection and isolation of the infra-renal abdominal aorta; except for the SHAM group, all the others were submitted to the aortic clamping for 70 minutes (ischemia) and posterior clamp removal (reperfusion, 70 minutes). In the IPC and IPC+A groups, postconditioning was performed between the ischemia and reperfusion phases by four cycles of reperfusion and ischemia lasting 30 seconds each. In the IPC+A and A groups, preceding the surgical procedure, administration of 3.4 mg/day of atorvastatin was performed for seven days by gavage. After the surgical procedure, the right caudal lobe was removed from the lung for histological study, using tissue injury score ranging from grade 1 (normal tissue) to grade 4 (intense lesion). RESULTS: The mean lung injury was 3.6 in the I/R group, 1.6 in the IPC group, 1.2 in the IPC+A group, 1.2 in the A group, and 1 in the SHAM group (P<0.01). CONCLUSION: Ischemic postconditioning and atorvastatin were able to minimize lung reperfusion injury, alone or in combination.


Assuntos
Atorvastatina/uso terapêutico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Pós-Condicionamento Isquêmico/métodos , Pulmão/irrigação sanguínea , Traumatismo por Reperfusão/prevenção & controle , Animais , Aorta Abdominal , Terapia Combinada , Isquemia/patologia , Isquemia/prevenção & controle , Pulmão/patologia , Masculino , Ratos Wistar , Traumatismo por Reperfusão/patologia , Reprodutibilidade dos Testes , Fatores de Tempo , Resultado do Tratamento
5.
J. health sci. (Londrina) ; 20(2)30/06/2018.
Artigo em Português | LILACS | ID: biblio-909376

RESUMO

The change in lower extremity movement pattern has been previously associated with severe knee disorders, including anterior cruciate ligament rupture, patellar tendinopathy, iliotibial band syndrome, and patellofemoral pain (PFP). The aim of this study was to verify the clinical reliability of ankle dorsiflexion range of motion (ADROM) measurement with weight bearing (WB) using an app on the smartphone (iHand) and to verify if there is correlation between the limitation of the ADROM and the PFP. A total of 67 women, mean age 34.3 ± 2.4, height 182 ± 3.6, weight 73.7 ± 4.2, were allocated to the control group (n = 23) and the PFP group (n = 23). Two examiners evaluated the active ADROM (lunge test) in both ankles at two times to test inter-examiner and intra-examiner reliability. It was observed in the PFP group that the mean ADROM was 17.7 ± 2.5 and the control group was 35.3 ± 6.2 (right) and 17.1 ± 2.9 and 32.9 ± 5, 4 (left). It is concluded that the use of the smartphone app proved to be reliable for clinical application in the evaluation of ADROM with WB and that there is a relation between the low DFT of DFT with the presence of patellofemoral pain. (AU).


A alteração no padrão de movimento da extremidade inferior tem sido previamente associada com severas desordens do joelho, incluindo a ruptura do ligamento cruzado anterior, tendinopatia patelar, síndrome da banda iliotibial e dor patelofemoral - DPF. O objetivo do estudo foi verificar a confiabilidade clínica da mensuração da dorsiflexão de tornozelo - DFT com descarga de peso - WB utilizando um app no smartphone (iHand) e verificar se há correlação entre a limitação da DFT com a DPF. Participaram 67 mulheres, idade média 34,3±2,4, altura 182±3,6, peso 73,7±4,2, alocadas em grupo controle (n=23) e grupo DFP (n=23). Dois examinadores avaliaram a DFT ativa (lunge test) em ambos os tornozelos em dois momentos para se testar a confiabilidade inter-examinador e intra-examinador. O coeficiente de correlação intraclasse - CCI foi utilizado para a análise da confiabilidade das medidas. Observou-se alta confiabilidade (0,9965 [p<0,0001]) e (0,9949 [p<0,0001]) para tornozelo direito e esquerdo respectivamente. Observou-se no grupo DFP que a ADM média de DFT foi de 17,7±2,5 e grupo controle de 35,3±6,2 (direito) e 17,1±2,9 e 32,9±5,4 (esquerdo). Conclui-se que a utilização do app de smartphone se mostrou confiável para aplicação clínica na avaliação da DFT com WB e que há relação entre a baixa ADM de DFT com a presença de dor patelofemoral. (AU).

6.
Rev. bras. cir. cardiovasc ; 33(2): 115-121, Mar.-Apr. 2018. tab, graf
Artigo em Inglês | LILACS | ID: biblio-958394

RESUMO

Abstract Objective: The aim of the present study was to evaluate the ability of ischemic postconditioning, atorvastatin and both associated to prevent or minimize reperfusion injury in the lung of rats subjected to ischemia and reperfusion by abdominal aortic clamping. Methods: We used 41 Wistar norvegic rats, which were distributed into 5 groups: ischemia and reperfusion (I/R), ischemic postcondictioning (IPC), postconditioning + atorvastatin (IPC+A), atorvastatin (A) and SHAM. It was performed a medium laparotomy, dissection and isolation of the infra-renal abdominal aorta; except for the SHAM group, all the others were submitted to the aortic clamping for 70 minutes (ischemia) and posterior clamp removal (reperfusion, 70 minutes). In the IPC and IPC+A groups, postconditioning was performed between the ischemia and reperfusion phases by four cycles of reperfusion and ischemia lasting 30 seconds each. In the IPC+A and A groups, preceding the surgical procedure, administration of 3.4 mg/day of atorvastatin was performed for seven days by gavage. After the surgical procedure, the right caudal lobe was removed from the lung for histological study, using tissue injury score ranging from grade 1 (normal tissue) to grade 4 (intense lesion). Results: The mean lung injury was 3.6 in the I/R group, 1.6 in the IPC group, 1.2 in the IPC+A group, 1.2 in the A group, and 1 in the SHAM group (P<0.01). Conclusion: Ischemic postconditioning and atorvastatin were able to minimize lung reperfusion injury, alone or in combination.


Assuntos
Animais , Masculino , Traumatismo por Reperfusão/prevenção & controle , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Pós-Condicionamento Isquêmico/métodos , Atorvastatina/uso terapêutico , Pulmão/irrigação sanguínea , Aorta Abdominal , Fatores de Tempo , Traumatismo por Reperfusão/patologia , Reprodutibilidade dos Testes , Resultado do Tratamento , Ratos Wistar , Terapia Combinada , Isquemia/patologia , Isquemia/prevenção & controle , Pulmão/patologia
7.
Arq Bras Cir Dig ; 30(3): 197-200, 2017.
Artigo em Inglês, Português | MEDLINE | ID: mdl-29019561

RESUMO

BACKGROUND: Some studies have shown that statins have a promising effect on protection against reperfusion injury. AIM: To evaluate the ability of ischemic postconditioning, statins and both associated to prevent or minimize reperfusion injury in the liver of rats subjected to ischemia and reperfusion by abdominal aorta clamping. METHOD: Were used 41 Wistar rats, which were distributed into five groups: ischemia and reperfusion (I/R), ischemic postcondictioning (IPC), postconditioning + statin (IPC+S), statin (S) and Sham. It was performed a medium laparotomy, dissection and isolation of the infra-renal abdominal aorta; excepting Sham group, all the others were submitted to the aorta clamping for 70 min (ischemia) and posterior clamping removing (reperfusion, 70 min). In the IPC and IPC+S groups, postconditioning was performed between the ischemia and reperfusion phases by four cycles of reperfusion and ischemia lasting 30 s each. In IPC+S and S groups, preceding the surgical procedure, administration of 3.4 mg/day of atorvastatin was performed for seven days by gavage. The left hepatic lobe was removed for histological study and euthanasia was performed. RESULTS: The mean hepatic injury was 3 in the I/R group, 1.5 in the IPC group, 1.2 in the IPC+S group, 1.2 in the S group, and 0 in the SHAM group. The I/R group had a higher degree of tissue injury compared to the others in the statistical analysis and there was no difference between the others (p<0.01). CONCLUSION: Ischemic postconditioning and atorvastatin were able to minimize hepatic reperfusion injury, either alone or in combination.


Assuntos
Atorvastatina/uso terapêutico , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Fígado/irrigação sanguínea , Traumatismo por Reperfusão/prevenção & controle , Animais , Pós-Condicionamento Isquêmico , Masculino , Ratos , Ratos Wistar
8.
ABCD (São Paulo, Impr.) ; 30(3): 197-200, July-Sept. 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-885726

RESUMO

ABSTRACT Background: Some studies have shown that statins have a promising effect on protection against reperfusion injury. Aim: To evaluate the ability of ischemic postconditioning, statins and both associated to prevent or minimize reperfusion injury in the liver of rats subjected to ischemia and reperfusion by abdominal aorta clamping. Method: Were used 41 Wistar rats, which were distributed into five groups: ischemia and reperfusion (I/R), ischemic postcondictioning (IPC), postconditioning + statin (IPC+S), statin (S) and Sham. It was performed a medium laparotomy, dissection and isolation of the infra-renal abdominal aorta; excepting Sham group, all the others were submitted to the aorta clamping for 70 min (ischemia) and posterior clamping removing (reperfusion, 70 min). In the IPC and IPC+S groups, postconditioning was performed between the ischemia and reperfusion phases by four cycles of reperfusion and ischemia lasting 30 s each. In IPC+S and S groups, preceding the surgical procedure, administration of 3.4 mg/day of atorvastatin was performed for seven days by gavage. The left hepatic lobe was removed for histological study and euthanasia was performed. Results: The mean hepatic injury was 3 in the I/R group, 1.5 in the IPC group, 1.2 in the IPC+S group, 1.2 in the S group, and 0 in the SHAM group. The I/R group had a higher degree of tissue injury compared to the others in the statistical analysis and there was no difference between the others (p<0.01). Conclusion: Ischemic postconditioning and atorvastatin were able to minimize hepatic reperfusion injury, either alone or in combination.


RESUMO Racional: Alguns estudos têm demonstrado que as estatinas apresentam efeito promissor contra a lesão de reperfusão. Objetivo: Avaliar a capacidade do pós-condicionamento, estatina e ambos associados em prevenir ou minimizar a lesão de reperfusão à distância no fígado em ratos submetidos à isquemia e reperfusão por clampeamento aórtico. Método: Foram utilizados 41 ratos Wistar distribuídos em cinco grupos: isquemia e reperfusão (I/R), pós-condicionamento isquêmico (PCI), pós-condicionamento + estatina (PCI+E), estatina (E) e SHAM. Os animais foram anestesiados, submetidos à laparotomia, dissecção e isolamento da aorta abdominal infrarrenal; exceto o grupo SHAM, todos os outros foram submetidos ao clampeamento aórtico por 70 min (isquemia) e posterior retirada do clampe (reperfusão). Nos grupos PCI e PCI+E o pós-condicionamento foi realizado entre as fases de isquemia e reperfusão por quatro ciclos de reperfusão e isquemia durando 30 s cada. Nos grupos PCI+E e E, previamente ao procedimento cirúrgico foi realizada a administração de 3,4 mg/dia de atorvastatina durante sete dias por gavagem. Resultados: A média de lesão hepática foi 3 no grupo I/R, 1,5 no grupo PCI, 1,2 no grupo PCI+E, 1,2 no grupo E e 0 no grupo SHAM. O grupo I/R teve maior grau de lesão tecidual (p<0,01). Conclusão: O pós-condicionamento isquêmico e atorvastatina foram capazes de minimizar a lesão hepática de reperfusão remota, isoladamente e em associação.


Assuntos
Animais , Masculino , Ratos , Traumatismo por Reperfusão/prevenção & controle , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , Atorvastatina/uso terapêutico , Fígado/irrigação sanguínea , Ratos Wistar , Pós-Condicionamento Isquêmico
9.
Rev. bras. med. esporte ; 22(3): 227-230, graf
Artigo em Português | LILACS | ID: lil-787680

RESUMO

RESUMO Introdução: A flexibilidade muscular é descrita como a capacidade do músculo realizar a extensão de suas fibras, influenciando a mobilidade articular. A diatermia aplicada à musculatura prepara o corpo para atividades físicas, por acelerar o metabolismo das fibras musculares e diminuir a resistência intramuscular, aumentando assim a variedade de movimento e a eficiência mecânica. A crioterapia tem diversas funções fisiológicas quando aplicada ao corpo humano, as quais, em conjunto, propiciam o relaxamento muscular. Objetivo: Avaliar o comportamento da flexibilidade dos músculos isquiotibiais frente à aplicação de alongamento passivo associado a termoterapias quente e fria. Métodos: Este estudo foi composto de 24 voluntários, de ambos os sexos, distribuídos aleatoriamente em três grupos, sendo eles: grupo alongamento passivo (G1), grupo crioterapia precedendo alongamento passivo (G2) e grupo diatermia precedendo alongamento passivo (G3). Os voluntários foram submetidos a avaliações de amplitude de movimento através da goniometria da flexão de quadril com o joelho estendido, sendo uma avaliação inicial realizada antes de iniciar o protocolo e reavaliações ao final de cada uma das quatro semanas de intervenção. Resultados: Verificou-se aumento significativo da flexão de quadril no G2 e G3 com relação ao G1. Não houve diferença estatística entre G2 e G3. Conclusão: O uso da diatermia, assim como da crioterapia, associado ao alongamento passivo é favorável para o ganho de flexibilidade muscular e, consequentemente, de amplitude de movimento em jovens saudáveis.


ABSTRACT Introduction: Muscle flexibility is described as the ability of the muscle to extend its fibers, influencing joint mobility. Diathermy applied to the muscles prepares the body for physical activity, by accelerating the metabolism of the muscle fibers and decreasing the intramuscular resistance, thereby increasing the range of motion and the mechanical efficiency. Cryotherapy has various physiological functions when applied to the human body, which, together, provide muscle relaxation. Objective: To evaluate the flexibility of hamstring muscles by applying passive stretching associated with hot and cold thermotherapy. Methods: This study consisted of 24 volunteers of both sexes randomly divided into three groups: passive stretching group (G1), cryotherapy preceding passive stretching group (G2) and diathermy preceding passive stretching group (G3). The volunteers were evaluated for range of motion by goniometry of hip flexion with the knee extended, with an initial assessment carried out before starting the protocol and revaluations at the end of each of the four weeks of intervention. Results: There was significant increase in hip flexion in G2 and G3 compared to G1. There was no statistical difference between G2 and G3. Conclusion: The use of diathermy and cryotherapy associated with passive stretching is favorable for increasing muscular flexibility and hence the amplitude of motion in healthy young adults.


RESUMEN Introducción: La flexibilidad muscular se describe como la capacidad del músculo para lograr la extensión de sus fibras, que afecta a la movilidad articular. La diatermia aplicada a los músculos prepara el cuerpo para la actividad física, mediante la aceleración del metabolismo de las fibras musculares y disminución de la resistencia intramuscular, lo que aumenta el rango de movimiento y la eficiencia mecánica. La crioterapia tiene diversas funciones fisiológicas cuando es aplicada al cuerpo humano, que, en conjunto, proporcionan la relajación muscular. Objetivo: Evaluar la flexibilidad de los músculos isquiotibiales frente a la aplicación de alongamiento pasivo asociado a termoterapia caliente y fría. Métodos: Este estudio se compone de 24 voluntarios de ambos sexos divididos aleatoriamente en tres grupos, a saber: grupo de estiramiento pasivo (G1), grupo de crioterapia antes del estiramiento pasivo (G2) y grupo de diatermia antes del estiramiento pasivo (G3). Los voluntarios fueron sometidos a evaluaciones de amplitud de movimiento a través de la goniometría de la flexión de cadera con la rodilla extendida, siendo una evaluación inicial realizada antes de iniciar el protocolo y reevaluaciones al final de cada una de las cuatro semanas de intervención. Resultados: No hubo aumento significativo de la flexión de la cadera en G2 y G3 en comparación con G1. No hubo diferencia estadística entre G2 y G3. Conclusión: El uso de diatermia y crioterapia asociado con el estiramiento pasivo es favorable para aumentar la flexibilidad muscular y por lo tanto el rango de movimiento en adultos jóvenes sanos.

10.
Cien Saude Colet ; 21(1): 225-32, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26816179

RESUMO

In Brazil, leprosy is endemic in three regions: the North, Northeast, and Mid-West. Counties with contiguous binational urban areas are characterized by a constant flow of people, goods, and services, which facilitates the transmission of diseases and influences the epidemiological profile of leprosy. The purpose of this study was to examine territorial differences in relation to the incidence of leprosy, focusing on border counties with contiguous binational urban areas or otherwise. Each county was taken as an information unit for leprosy cases reported during 2001-2011, based on data from original notification records of the state's Department of Health. In counties with contiguous binational urban areas detection rates showed tendency to increase, Virchowian (lepromatous) disease and disability grade II predominated when compared with Groups II and III: 0.64 and 0.54/100,000 inhabitants for Virchowian disease and 0.14 and 0.27/100,000 inhabitants for disability grade II respectively, and were associated with higher transmission rates. The findings demonstrate the role of border areas in maintaining the endemicity of leprosy.


Assuntos
Hanseníase , Brasil/epidemiologia , Humanos , Incidência , Hanseníase/diagnóstico , Hanseníase/epidemiologia , Hanseníase/transmissão , Paraguai/epidemiologia
11.
Ciênc. Saúde Colet. (Impr.) ; 21(1): 225-232, Jan. 2016. tab, graf
Artigo em Inglês | LILACS | ID: lil-770670

RESUMO

Abstract In Brazil, leprosy is endemic in three regions: the North, Northeast, and Mid-West. Counties with contiguous binational urban areas are characterized by a constant fow of people, goods, and services, which facilitates the transmission of diseases and influences the epidemiological profile of leprosy. The purpose of this study was to examine territorial differences in relation to the incidence of leprosy, focusing on border counties with contiguous binational urban areas or otherwise. Each county was taken as an information unit for leprosy cases reported during 2001-2011, based on data from original notification records of the state's Department of Health. In counties with contiguous binational urban areas detection rates showed tendency to increase, Virchowian (lepromatous) disease and disability grade II predominated when compared with Groups II and III: 0.64 and 0.54/100,000 inhabitants for Virchowian desease and 0.14 and 0.27/100,000 inhabitants for disability grade II respectively, and were associated with higher transmission rates. The findings demonstrate the role of border areas in maintaining the endemicity of leprosy.


Resumo A hanseníase no Brasil é endêmica em três regiões: norte, nordeste e centro-oeste. As cidades com áreas urbanas contíguas entre o Brasil e Paraguai têm como característica intenso fluxo de pessoas, bens e serviços, cuja mobilidade favorece a transmissão de doenças e influencia no perfil epidemiológico da hanseníase. O objetivo do estudo é analisar as diferenças territoriais relacionadas aos casos de hanseníase, considerando os municípios da linha de fronteira com e sem áreas urbanas contiguas e demais municípios de Mato Grosso do Sul. Cada município foi tratado como unidade de informação para os casos de hanseníase notificados no período de 2001 a 2011, sendo os dados obtidos a partir da base de dados composta pelas fichas de notificação originais da Secretaria de Estado de Saúde. Em municípios com áreas urbanas contiguas, a detecção de casos mostra tendência de aumento, maior coeficientes da forma clínica virchowiana e grau de incapacidade II, em relação aos grupos II e III, que apresentaram 0,64 e 0,54/100.000 da forma clínica virchowiana, respectivamente, e 0,14 e 0,27/100.000, respectivamente, para o grau II de incapacidade. Situação que implica no aumento da transmissão da doença e configura o território de fronteira como cidade urbana contigua importante na manutenção da hanseníase como endêmica.


Assuntos
Humanos , Hanseníase , Paraguai/epidemiologia , Brasil/epidemiologia , Incidência , Hanseníase/diagnóstico , Hanseníase/transmissão , Hanseníase/epidemiologia
12.
Acta Cir Bras ; 30(4): 255-63, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25923258

RESUMO

PURPOSE: To evaluate the biocompatibility and osteogenesis of castor oil polymer doped with SiO2 or BaTiO3 nanoparticles. METHODS: Twenty four male rats Wistar were submitted to bone defect filled with castor oil polymer. The animals were distributed in two experimental groups had been formed with 12 animals each: Group 1 - Castor oil polymer doped with 0.30 grams of SiO2 replacing 0.30 grams of CaCO3. Group 2 - Castor oil polymer doped with 0.30 grams of BaTiO3 replacing 0.30 grams of CaCO3. Euthanasia occurred 30 and 60 days after surgery and the femurs were sent to histological analysis and MEV. RESULTS: The implants were biocompatible and allowed for progressive osteogenesis through osteoconduction in both observation periods. There was significant bone neoformation at 30 and 60 days in both groups within the histomorphometric evaluation, but group 1's osteogenesis was lesser in the 30 and 60-day periods observed when compared to the animals of group 2. The MEV morphometric evaluation evidenced a lesser percentage of osseous tissue filling within the BaTiO2-doped polymer. CONCLUSION: The castor oil polymer doped with SiO2 or BaTiO3 remained biocompatible and allowed for progressive osteogenesis in both observation periods.


Assuntos
Compostos de Bário/farmacologia , Materiais Biocompatíveis/farmacologia , Biopolímeros/farmacologia , Óleo de Rícino/farmacologia , Nanopartículas/química , Osteogênese/efeitos dos fármacos , Dióxido de Silício/farmacologia , Titânio/farmacologia , Animais , Regeneração Óssea/efeitos dos fármacos , Fêmur/efeitos dos fármacos , Fêmur/patologia , Implantes Experimentais , Masculino , Teste de Materiais , Microscopia Eletrônica de Varredura , Osseointegração/efeitos dos fármacos , Distribuição Aleatória , Ratos Wistar , Reprodutibilidade dos Testes , Fatores de Tempo
13.
Acta cir. bras ; 30(4): 255-263, 04/2015. tab, graf
Artigo em Inglês | LILACS | ID: lil-744282

RESUMO

PURPOSE: To evaluate the biocompatibility and osteogenesis of castor oil polymer doped with SiO2 or BaTiO3 nanoparticles. METHODS: Twenty four male rats Wistar were submitted to bone defect filled with castor oil polymer. The animals were distributed in two experimental groups had been formed with 12 animals each: Group 1 - Castor oil polymer doped with 0.30 grams of SiO2 replacing 0.30 grams of CaCO3. Group 2 - Castor oil polymer doped with 0.30 grams of BaTiO3 replacing 0.30 grams of CaCO3. Euthanasia occurred 30 and 60 days after surgery and the femurs were sent to histological analysis and MEV. RESULTS: The implants were biocompatible and allowed for progressive osteogenesis through osteoconduction in both observation periods. There was significant bone neoformation at 30 and 60 days in both groups within the histomorphometric evaluation, but group 1's osteogenesis was lesser in the 30 and 60-day periods observed when compared to the animals of group 2. The MEV morphometric evaluation evidenced a lesser percentage of osseous tissue filling within the BaTiO2-doped polymer. CONCLUSION: The castor oil polymer doped with SiO2 or BaTiO3 remained biocompatible and allowed for progressive osteogenesis in both observation periods. .


Assuntos
Animais , Masculino , Compostos de Bário/farmacologia , Materiais Biocompatíveis/farmacologia , Biopolímeros/farmacologia , Óleo de Rícino/farmacologia , Nanopartículas/química , Osteogênese/efeitos dos fármacos , Dióxido de Silício/farmacologia , Titânio/farmacologia , Regeneração Óssea/efeitos dos fármacos , Fêmur/efeitos dos fármacos , Fêmur/patologia , Implantes Experimentais , Teste de Materiais , Microscopia Eletrônica de Varredura , Osseointegração/efeitos dos fármacos , Distribuição Aleatória , Ratos Wistar , Reprodutibilidade dos Testes , Fatores de Tempo
14.
Rev. bras. promoç. saúde (Impr.) ; 28(1): 5-15, mar. 2015. Ilus
Artigo em Inglês, Português | LILACS | ID: lil-794451

RESUMO

OBJETIVO: Verificar a prevalência dos fatores de risco para desenvolver diabetes mellitustipo 2 (DM2) em uma população universitária. MÉTODOS: Estudo observacional, transversal, realizado entre 2013 e 2014 em uma universidade de Parnaíba-PI, com indivíduos maiores de 18 anos que estudam ou trabalham no campus. Do total populacional disposto no campus (4.310 pessoas), participaram da pesquisa 74% (111) dos docentes (G1), 77,68% (94) dos técnicos administrativos (G2) e 32,10% (1.299) dos discentes, totalizando 1.504 indivíduos que responderam ao questionário "Are you at risk for type 2 diabetes?", traduzido para a língua portuguesa, de forma impressa, individual e anônima, com as respostas obtidas através de autopreenchimento. Calculou-se o risco de desenvolver DM2 para cada grupo, a associação entre o grupo e o risco de DM2 com teste do Qui-Quadrado (p<0,05) e o risco relativo (RR) para desenvolvimento de DM2 considerando os escores obtidos no grupo. RESULTADOS: A amostra contemplou 34,89% (1504) do n amostral. O risco de DM2 foi apresentado por 16,21% (18) dos indivíduos do G1, 13,82% (13) do G2 e 1,23% (16) do G3. Quanto à hipertensão, verificou-se a incidência de 17,1% (19) no G1, 12,8% (12) no G2 e 5,9% (77) no G3. Nos G1, G2 e G3, 59,5% (66), 38,3% (36) e 41,26% (536), respectivamente, não eram fisicamente ativos. O risco de desenvolver DM2 foi elevado no G1 e no G2, significativamente diferente do G3. CONCLUSÃO: Encontrou-se a prevalência do risco de desenvolver diabetes mellitus tipo 2 (DM2) de 16,21% no grupo de docentes, 13,82% no grupo de técnicos administrativos e 1,23% no grupo de discentes, destacando-se a obesidade e a inatividade física como fatores de risco mais comuns


OBJECTIVE: To determine the prevalence of risk factors for developing type 2 diabetes mellitus (T2DM) in a university population. METHODS: Observational, cross-sectional study, carried out between 2013 and 2014, in a university of Parnaíba, Piauí State, with individuals aged over 18 years, who study or work in campus. Of the total campus population provision (4,310 individuals), participated in the survey 74% (111) of teachers (G1), 77.68% (94) of the administrative staff (G2), and 32.10% (1,299) of the students, total ling 1,504 individuals who answered the questionnaire "Are you at risk for type 2 diabetes?", translated into Portuguese, in a written, individual, and anonymous form, with responses obtained through self- administration. The risk of developing T2DM was calculated for each group, as well as the association between the group and the T2DM risk, using the chi-square test (p<0.05), and the relative risk of T2DM development, considering the scores obtained in the group. RESULTS: The sample included 34.89% (1504) of the total sample n. T2DM risk was presented by 16.21% (18) of the individuals in G1, 13.82% (13) of G2, and 1.23% (16) of G3. For hypertension, the incidence of 17.1% (19) in G1, 12.8% (12) in G2, and 5.9% (77) in G3 was found. In G1, G2 and G3, 59.5% (66), 38.3% (36), and 41.26% (536), respectively, were not physically active. The risk of developing T2DM was higher in G1 and G2, and significantly different from G3. CONCLUSION: The prevalence of risk of developing type 2 diabetes was found at 16.21% in the teachers group, 13.82% in the administrative staff group, and 1.23% in the students group, with obesity and physical inactivity evidenced as the most common risk factors


OBJETIVO: Verificar la prevalencia de los factores de riesgo para el desarrollo de la Diabetes Mellitus tipo 2 (DM2) en una población universitaria. MÉTODOS: Estudio observacional y transversal realizado entre 2013 y 2014 en una universidad de Parnaíba-PI con individuos mayores de 18 años que estudian o trabajan em el campus. Del total poblacional del campus (4.310 personas), participaron de la investigación el 74% (111) de los docentes (G1), el 77,68% (94) de los técnicos administrativos (G2) y el 32,10% (1.299) de los discentes en un total de 1.504 individuos que contestaron el cuestionario "Are you at risk for type 2 diabetes?", que fue traducido para el idioma portugués, de forma impresa, individual y anónima con las respuestas obtenidas a través de auto aplicación. Se calculó el riesgo de desarrollo de la DM2 em cada grupo, la asociación del grupo y el riesgo de DM2 con la prueba de Chi-cuadrado (p<0,05) y el riesgo relativo (RR) para el desarrollo de la DM2 considerando las puntuaciones obtenidas en el grupo. RESULTADOS: La muestra incluyó el 34,89% (1504) del cálculo total de la muestra. El riesgo de la DM2 se diós en el 16,21% (18) de los individuos del G1, el 13,82% (13) del G2 y el 1,23% (16) del G3. Sobre la hipertensión, se verifico la incidência del 17,1% (19) en el G1, el 12,8% (12) en el G2 y el 5,9% (77) en el G3. En el G1, G2 y G3, el 59,5% (66), el 38,3% (36) y el 41,26% (536), respectivamente, no eran físicamente activos. El riesgo del desarrollo de la DM2 fue elevado en el G1 y el G2, significativamente distinto del G3. CONCLUSIÓN: Se encontró uma prevalencia del riesgo de desarrollo de la Diabetes Mellitus tipo 2 (DM2) del 16,21% en el grupo de docentes, del 13,82% en elgrupo de técnicos administrativos y del 1,23% en el grupo de discentes destacándose la obesidad y la inactividad física como factores de riesgo más comunes


Assuntos
Humanos , Fatores de Risco , Inquéritos e Questionários , Universidades
15.
Cad. saúde pública ; 30(12): 2631-2642, 12/2014. tab, graf
Artigo em Português | LILACS | ID: lil-733117

RESUMO

Este estudo analisou a magnitude da tuberculose pulmonar no período de 2007 a 2010 em municípios sul-mato-grossenses fronteiriços ao Paraguai e à Bolívia. Na região de fronteira, as taxas de incidência (49,1/100 mil habitantes), de mortalidade (4,0/100 mil) e de abandono do tratamento (11,3%) foram 1,6, 1,8 e 1,5 vez maiores do que na região não fronteiriça. Entre indígenas da fronteira, as taxas de incidência (253,4/100 mil habitantes), mortalidade (11,6/100 mil) e coinfecção por HIV (1,9/100 mil) foram, respectivamente, 6,4, 3,2 vezes e 1,9 vez maiores do que entre os não indígenas nesta região. Estar na região de fronteira revelou-se fator de proteção contra coinfecção por HIV. Constatou-se associação entre ser indígena e não abandonar o tratamento. Conclui-se que a população residente nesses municípios de fronteira vivencia elevado risco de adoecimento, de morte e de abandono do tratamento de tuberculose pulmonar, o que requer ações diferenciadas de vigilância em saúde.


This study analyzed the epidemiological profile of pulmonary tuberculosis from 2007 to 2010 in municipalities (counties) in Mato Grosso do Sul State, Brazil, that border on Paraguay and Bolivia. In the border region, the incidence rate (49.1/100,000 inhabitants), mortality rate (4.0/100,000 inhabitants), and treatment dropout rate (11.3%) were 1.6, 1.8, and 1.5 times higher than in the non-border region. Among indigenous individuals in the border region, the rates for incidence (253.4/100,000 inhabitants), mortality (11.6/100,000 inhabitants), and HIV/TB co-infection (1.9/100,000 inhabitants) were 6.4, 3.2, and 1.9 times higher than in non-indigenous individuals in this region. Living in the border regions was inversely associated with HIV/TB co-infection. Indigenous ethnicity was associated statistically with not abandoning TB treatment. The study concludes that the population residing in these municipalities along the border is exposed to high risk of pulmonary TB and TB mortality and treatment dropout, thus requiring special health surveillance interventions.


Este estudio examinó la magnitud de la tuberculosis pulmonar del 2007 al 2010 en los municipios de Mato Grosso do Sul (Brasil) limítrofes con Paraguay y Bolivia. En la región fronteriza, las tasas de incidencia (49,1/100.000 habitantes), mortalidad (4,0/100.000) y abandono del tratamiento (11,3%) fueron 1,6, 1,8 y 1,5 veces más altas que en la región no fronteriza. En la región fronteriza, las tasas de incidencia (253,4/100.000 habitantes), mortalidad (11,6/100.000) y co-infección por el VIH (1,9/100.000) entre residentes indígenas fueron 6,4, 3,2 y 1,9 veces más altas que en la población no indígena. Vivir en la región fronteriza resultó ser un factor protector contra la co-infección por el VIH. Se identificó asociación entre ser indígena y no abandonar el tratamiento. Los resultados mostraron que la población de estos municipios fronterizos está sujeta a un alto riesgo de enfermedad, muerte y abandono del tratamiento de la tuberculosis pulmonar, lo que requiere acciones de vigilancia de la salud específicas para este contexto.


Assuntos
Humanos , Tuberculose Pulmonar/mortalidade , Bolívia , Brasil/epidemiologia , Incidência , Índios Sul-Americanos/estatística & dados numéricos , Paraguai , Estudos Retrospectivos , Fatores de Risco , Recusa do Paciente ao Tratamento , Tuberculose Pulmonar/etnologia
16.
Rev. bras. ciênc. esporte ; 36(3): 679-684, Jul-Sep/2014. tab, graf
Artigo em Português | LILACS | ID: lil-725616

RESUMO

Relacionou-se a força isométrica dos rotadores do ombro e a capacidade de ativação do músculo transverso abdominal (TrA) entre 15 atletas de handebol e 15 universitários (22 ± 1,64 anos), distribuídos entre GA e GC. Todos foram submetidos às avaliações da capacidade de ativação do TrA por meio da unidade de biofeedback de pressão e da capacidade de ativação dos mm rotadores internos (RI) e externos (RE) do ombro pelo break test por meio do Esfigmomanômetro Modificado. Resultados mostraram significativa a correlação entre a força de RE e o TrA no GA (r = 0,68; p = 0,005). Houve diferenças significativas entre GA e GC para ativação do TrA, RI e RE (p < 0,05). Conclui-se que a prática de handebol melhora a ativação do TrA propor cionalmente à magnitude da ativação dos RE.


The aim of this study was to relate the isometric strength of the rotators and the ability to activate the transversus abdominis muscle (TrA) between 15 handball athletes (GA) and 15 college students (GC) (22 ± 1.64 years). All were subjected to evaluation of the ability of TrA activation by pressure biofeedback unit, and of the ability to activate the muscle internal (IR) and external (ER) rotators with the break test through the Modified Sphygmomanometer. Results showed significant correlation between the strength of the TrA and ER GA (r = 0.68, p = 0.005). There were significant differences between GA and GC for activation of TrA, IR and ER (p <0.05). We conclude that the practice of handball improves the activation of TrA in proportion to the magnitude of activation of ER.


Relató la fuerza isométrica de rotadores y la capacidad de activar el músculo transverso del abdomen (TrA) a atletas de balonmano entre 15 y 15 estudiantes universitarios (22 ± 1,64 años), distribuidos entre GA y GC. Todos fueron sometidos a evaluaciones de la capacidad de la activación TrA través de la UBP, y la capacidad de activación mm rotadores internos (RI) y externos (RE) del hombro, la prueba de "break test" a través de lo Esfigmomanómetro Modificado. Los resultados mostraron correlación significativa entre la fuerza de la TrA y RE GA (r = 0,68, p = 0,005). Hubo diferencias significativas entre GC y GA para la activación de TrA, RI y RE (p < 0,05). Llegamos a la conclusión de que la práctica de balonmano mejora la activación de TrA en la proporción de la magnitud de la activación de RE.

17.
Cad Saude Publica ; 30(12): 2631-42, 2014 Dec.
Artigo em Português | MEDLINE | ID: mdl-26247992

RESUMO

This study analyzed the epidemiological profile of pulmonary tuberculosis from 2007 to 2010 in municipalities (counties) in Mato Grosso do Sul State, Brazil, that border on Paraguay and Bolivia. In the border region, the incidence rate (49.1/100,000 inhabitants), mortality rate (4.0/100,000 inhabitants), and treatment dropout rate (11.3%) were 1.6, 1.8, and 1.5 times higher than in the non-border region. Among indigenous individuals in the border region, the rates for incidence (253.4/100,000 inhabitants), mortality (11.6/100,000 inhabitants), and HIV/TB co-infection (1.9/100,000 inhabitants) were 6.4, 3.2, and 1.9 times higher than in non-indigenous individuals in this region. Living in the border regions was inversely associated with HIV/TB co-infection. Indigenous ethnicity was associated statistically with not abandoning TB treatment. The study concludes that the population residing in these municipalities along the border is exposed to high risk of pulmonary TB and TB mortality and treatment dropout, thus requiring special health surveillance interventions.


Assuntos
Tuberculose Pulmonar/mortalidade , Bolívia , Brasil/epidemiologia , Humanos , Incidência , Índios Sul-Americanos/estatística & dados numéricos , Paraguai , Estudos Retrospectivos , Fatores de Risco , Recusa do Paciente ao Tratamento , Tuberculose Pulmonar/etnologia
18.
Acta Cir Bras ; 27(8): 544-51, 2012 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-22850705

RESUMO

PURPOSE: To evaluate the influence of aerobic exercise on oxidative stress in mice. METHODS: The study included twenty female mice Mus musculus-Swiss divided into two groups: sedentary control (GA) and exercise (GB), each containing ten animals. All animals underwent an adaptation period of seven days isolated in individual boxes. After this period, the animals in the exercise group (GB) were trained in angled running wheel with circumference of 25 cm assembled on an articulated axle during five minutes for three consecutive days. On the fourth day, they underwent an exercise program of one session lasting 45 minutes. The evaluation of oxidative stress was performed by determining the levels of malondialhyde derived of lipid peroxidation by the TBA method. The samples were read in a spectrophotometer at 535 nm. RESULTS: No significant difference was observed in the intergroup comparison of MDA levels in the tissues evaluated. A significant difference was observed in the intragroup comparison of MDA levels in the control group (p = 0.0201).The Tukeys' post hoc test indicated significantly lower values of MDA in the smooth muscle in relation to plasma. In the analysis of variance in the exercise group, a significant difference between tissues (p = 0.0009), with significantly lower values in the smooth muscle in relation to plasma (p<0.001) and higher in striated muscle in relation to smooth muscle (p<0.05) was observed. CONCLUSION: There was no change in the analysis of oxidative stress in mice which were undergone a single session of aerobic exercise.


Assuntos
Estresse Oxidativo/fisiologia , Condicionamento Físico Animal/fisiologia , Animais , Biomarcadores/análise , Feminino , Peroxidação de Lipídeos/fisiologia , Malondialdeído/análise , Camundongos , Músculo Esquelético/química , Esforço Físico/fisiologia , Tiobarbitúricos , Fatores de Tempo
19.
Acta cir. bras ; 27(8): 544-551, Aug. 2012. ilus, tab
Artigo em Inglês | LILACS | ID: lil-643622

RESUMO

PURPOSE: To evaluate the influence of aerobic exercise on oxidative stress in mice. METHODS: The study included twenty female mice Mus musculus-Swiss divided into two groups: sedentary control (GA) and exercise (GB), each containing ten animals. All animals underwent an adaptation period of seven days isolated in individual boxes. After this period, the animals in the exercise group (GB) were trained in angled running wheel with circumference of 25 cm assembled on an articulated axle during five minutes for three consecutive days. On the fourth day, they underwent an exercise program of one session lasting 45 minutes. The evaluation of oxidative stress was performed by determining the levels of malondialhyde derived of lipid peroxidation by the TBA method. The samples were read in a spectrophotometer at 535 nm. RESULTS: No significant difference was observed in the intergroup comparison of MDA levels in the tissues evaluated. A significant difference was observed in the intragroup comparison of MDA levels in the control group (p = 0.0201).The Tukeys' post hoc test indicated significantly lower values of MDA in the smooth muscle in relation to plasma. In the analysis of variance in the exercise group, a significant difference between tissues (p = 0.0009), with significantly lower values in the smooth muscle in relation to plasma (p<0.001) and higher in striated muscle in relation to smooth muscle (p<0.05) was observed. CONCLUSION: There was no change in the analysis of oxidative stress in mice which were undergone a single session of aerobic exercise.


OBJETIVO: Avaliar a influência do exercício físico aeróbico sobre o estresse oxidativo em camundongos. MÉTODOS: Participaram do estudo 20 camundongos (Swiss), distribuídos em dois grupos: controle-sedentário (GA) e exercício (GB) cada um contendo dez animais. Todos os animais passaram por um período de adaptação de sete dias. Após os animais do grupo (GB) receberam treinamento em roda giratória angulada montada sobre eixo articulado por cinco minutos durante três dias consecutivos. No quarto dia foram submetidos à única sessão de exercício por 45 minutos. A avaliação do estresse oxidativo foi realizada por meio dos níveis de malondiadeído pelo método do TBA. As amostras foram lidas em espectrofotômetro a 535nm. RESULTADOS: Não houve diferença significativa na comparação intergrupos nos tecidos avaliados. Diferença significativa foi observada na comparação intragrupo para o GA (p=0,0201). O post hoc test de Tukey apontou valores significantemente inferiores no músculo liso em relação ao plasma. A análise de variância do GB apontou diferença significativa entre os tecidos (p=0,0009), com valores menores no músculo liso em relação ao plasma (p<0,001), e maiores no músculo estriado em relação ao músculo liso (p<0,05). CONCLUSÃO: Não houve alteração nas análises de malondialdeído tecidual entre os grupos avaliados.


Assuntos
Animais , Feminino , Camundongos , Estresse Oxidativo/fisiologia , Condicionamento Físico Animal/fisiologia , Biomarcadores/análise , Peroxidação de Lipídeos/fisiologia , Malondialdeído/análise , Músculo Esquelético/química , Esforço Físico/fisiologia , Fatores de Tempo , Tiobarbitúricos
20.
Acta cir. bras ; 27(1): 56-62, Jan. 2012. ilus, tab
Artigo em Inglês | LILACS | ID: lil-607997

RESUMO

PURPOSE: To evaluate the biologic behavior of the castor polymer containing silica nanoparticles as a bone substitute in diafisary defect. METHODS: Twenty seven male rattus norvegicus albinus wistar lineage were submitted to bone defect filled with castor oil polymer. Three experimental groups had been formed with nine animals each: (1) castor oil polymer containing only calcium carbonate; (2) castor oil polymer with calcium carbonate and doped with 5 percent of silica nanoparticles; (3) castor polymer with calcium carbonate doped with 10 percent of silica nanoparticles; 3 animals of each group were submitted to euthanasia 15, 30 and 60 days after experimental procedure, and their femurs were removed to histological evaluation. RESULTS: there was bone growth in all the studied groups, with a greater tendency of growth in the group 1. After 30 days all the groups presented similar results. After 60 days a greater amount of fibroblasts, osteoblasts, osteocytes and osteoclasts in group 3 was observed, with integrated activity of 3 kinds of cells involved in the bone activation-reabsorption-formation. CONCLUSIONS: The castor polymer associated to the silica nanoparticles is biocompatible and allows osteoconduction. The presence of osteoprogenitors cells suggests silica osteoinduction capacity.


OBJETIVO: Avaliar o comportamento biológico do polímero de mamona contendo nanopartículas de sílica como substituto ósseo. MÉTODOS: Vinte e sete rattus norvergicus albinus, Wistar foram submetidos a defeito ósseo preenchido com polímero de mamona. Foram formados três grupos experimentais, com nove ratos cada: (1) Polímero com carbonato de cálcio; (2) Polímero com carbonato de cálcio dopado com 5 por cento de nanopartículas de sílica; (3) Polímero com carbonato de cálcio dopado com 10 por cento de nanopartículas de sílica; três animais de cada grupo foram submetidos à eutanásia 15, 30 e 60 dias após o procedimento experimental e os fêmures removidos e submetidos à avaliação histológica. RESULTADOS: Houve crescimento ósseo em todos os grupos estudados, com maior tendência de crescimento no grupo contendo polímero de mamona acrescido apenas por carbonato de cálcio. Aos 30 dias, todos os grupos apresentaram resultados semelhantes. Aos 60 dias, notou-se maior presença de fibroblastos, osteoblastos, osteócitos e osteoclastos no grupo 3, com persistência da atividade integrada dos três tipos de células envolvidas no processo de ativação-reabsorção-formação óssea. CONCLUSÕES: O polímero de mamona associado com nanopartículas de sílica é biocompatível e permite a osteocondução. A presença de células osteoprogenitoras nos implantes contendo 10 por cento de sílica indica sua capacidade osteoindutora.


Assuntos
Animais , Masculino , Ratos , Regeneração Óssea/efeitos dos fármacos , Substitutos Ósseos/uso terapêutico , Óleo de Rícino/uso terapêutico , Nanopartículas/química , Poliuretanos/química , Dióxido de Silício/química , Regeneração Óssea/fisiologia , Óleo de Rícino/química , Teste de Materiais , Osteoblastos/efeitos dos fármacos , Ratos Wistar
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