FABIANO INACIO DE SOUZA
Projetos de Pesquisa
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LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
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article 10 Citação(ões) na Scopus SPINAL CORD INJURY EXPERIMENTAL MODEL AND MOTION EVALUATION PROTOCOL IN WISTAR RATS(2011) SANTOS, Gustavo Bispo dos; CRISTANTE, Alexandre Fogaca; MARCON, Raphael Martus; SOUZA, Fabiano Inacio de; BARROS FILHO, Tarcisio Eloy Pessoa de; DAMASCENO, Marcelo LoquetteObjectives: To determine a standardized spinal cord contusion model and a method for motor assessment in rats with paraplegia. Methods: This study used 20 Wistar rats divided into 4 groups according to level of severity of spinal cord injury; standardized intermediate lesions were made through system MASCIS IMPACTOR (Multicenter Animal Spinal Cord Injury Study): group 1, 12.5mm (mild injury); group 2,25mm (moderate injury); group 3,50mm (severe injury; in the group 4 the animals suffered no injury (control group). Motor function was assessed after 48 hours, using the scale proposed by Basso, Beattie and Bresnahan. Results: Using the model, we observed that the mild contusions (12.5mm height) were effective, and the animals presented acute urinary tract infection one week after the injury. Moderate contusions (25mm height) were effective, and the animals presented urinary infection until 2 weeks after injury. The severe contusions (50mm height) were effective, and the animals presented urinary infection for 3 to 4 weeks and autophagy. Conclusion: The model of spinal cord injury using the system MASCIS IMPACTOR and the functional assessment proposed by Basso, Beattie and Bresnahan is reproducible and can be used, enabling information exchange among different researchers.article 2 Citação(ões) na Scopus Avaliação histológica da neurorrafia término-lateral. Estudo experimental em ratos(2011) SOUZA, Fabiano Inacio de; SANTOS, Gustavo Bispo dos; SILVA, Ciro Ferreira da; MATTAR JUNIOR, Rames; ZUMIOTTI, Arnaldo ValdirObjective: The aim of this study was to histologically compare the axonal sprouting after end-to-side neurorrhaphy with or without epineurotomy. Methods: twenty male Wistar rats were used, divided into two groups of 10 rats each. A 1.0cm segment of the tibial nerve E was dried and sutured on the opposite side, where it was sutured into the sciatic nerve D. In Group I, the suture was made directly in the epineurium and in Group II, epineurotomy was performed. After 4 weeks, histological evaluation was carried out of the transposed segment and the sciatic nerve distal to the suture. Results: the results showed a small number of remyelinated fibers, varying from 7 to 51 fibers in Group I and from 10 to 91 fibers in Group II. The Mann-Whitney U test was used, with p=0.311, showing there is no statistically significant difference between the two groups. There was no positive relation between the number of remyelinated fibers in the graft and in the suture site distal to the sciatic lesion. Conclusion: lateral-ending neurorrhaphy, with or without epineural window, does not promote efficient remyelinization. Level of Evidence: Level II, prospective comparative study.