2017-03-242017-03-242016-06-10PENHA, Nelson Elias Abrahão da. Efeitos anti-inflamatórios e neuroprotetores do extrato de gergelim (Sesamum indicum L.) em um modelo experimental de lesão aguda da medula espinhal de ratos. 2016. 88 f. Tese (Doutorado) - Universidade Federal do Pará, Instituto de Ciências Biológicas, Belém, 2016. Programa de Pós-Graduação em Neurociências e Biologia Celular.https://repositorio.ufpa.br/handle/2011/7994The spinal cord is a component of central nervous system (CNS) with crucial functions for locomotion, motor skills, somatosensory and authonomic control. Spinal injuries are among the more serious and debilitating pathological conditions to human health with large worldwide. The use of experimental models of spinal cord injury (SCI) is pivotal to understandthe SCI pathophysiology as well as search for treatments to minimize the neurological deficits and improve functional recovery. In this work, we aimed to investigate the neuroprotective and anti-inflammatory effects of supercritical gergelim (Sesamum indicum L.) extract in the acute phase of SCI in adult rats. Male Adult rats were submitted to spinal cord (SC) hemissection at T8. The sham (non lesioned) and control animals were treated with 5% tween(veicle), while treated animals received intraperitoneal (i.p) injections of Gergelim extract (150 mg/kg divided in two doses per day). Animals were allowed to recovery and were perfused at 1, 3 and 7 days post-lesion. 20 μm sections were obtained using a cryostat and stained with methylen blue, hematoxylin-eosin (HE), trichromic of Gomori and cresyl violet for gross histopathology. In addition, sections were immunolabeled with specific antibodies against neutrophils (anti-MBS-1) and activated microglia/macrophages (anti-ED1). The muscle force was assessed through electromiographic records performed in both control and treated animals at 1 and 7 days postlesion. The control animals presented progressive SC cavitation concomitant with neutrophil recruitment and microglia/macrophage activation. The treatment with gergelim extract induced tissue preservation and considerable decrease of neutrophil recruitment at 1 and 3 days, which was confirmed by quantitative analysis (ANOVA-Tukey, p<0.05). The gergelim treatment also decreased the microglia/macrophage activation at 7 days (ANOVA-Tukey, p<0.05). The electromiographic records revealed that the gergelim treatment improved the muscular force in about 50% compared to control animals. The results suggest that black gergelim seed extract is anti-inflammatory, neuroprotective and induces muscle force recovery in adults rats submitted to acute SCI. Future studies should confirm that a phytotherapic obtained from black sesame extract can be used as possible neuroprotective agent for human SCI.Acesso AbertoLesão medularExtrato de gergelimGergelimAgentes antiinflamatóriosNeuroproteçãoNeuroinflamaçãoMedula espinhalRato como animal de laboratórioSemente de gergelimSesamum indicum L.TeseCNPQ::CIENCIAS BIOLOGICAS::FISIOLOGIA::FISIOLOGIA GERAL::NEUROFISIOLOGIA