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EFFECT OF HYPERBARIC OXYGEN THERAPY ON NERVE REGENERATION IN RATS

OBJECTIVE: To evaluate histological changes in peripheral nerves of rats after sciatic nerve neurorrhaphy, according to the time of exposure to hyperbaric oxygen chamber treatment. METHODS: Twenty-five Wistar rats were divided into 5 groups according to the amount of exposure to hyperbaric oxygen ch...

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Detalles Bibliográficos
Autores principales: BARROS, THIAGO FELIPE DOS SANTOS, PAULOS, RENATA GREGORIO, IWASE, FERNANDA DO CARMO, SANTOS, GUSTAVO BISPO DOS, REZENDE, MARCELO ROSA DE, MATTAR, RAMES
Formato: Online Artículo Texto
Lenguaje:English
Publicado: ATHA EDITORA 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9210508/
https://www.ncbi.nlm.nih.gov/pubmed/35765575
http://dx.doi.org/10.1590/1413-785220223002191015
Descripción
Sumario:OBJECTIVE: To evaluate histological changes in peripheral nerves of rats after sciatic nerve neurorrhaphy, according to the time of exposure to hyperbaric oxygen chamber treatment. METHODS: Twenty-five Wistar rats were divided into 5 groups according to the amount of exposure to hyperbaric oxygen chamber treatment. Group 1 was the control and there was no use of hyperbaric oxygen chamber; group 2 received one week of therapy; group 3, two weeks; group 4, three weeks; and group 5, four weeks. After the fourth postoperative week, the animals were submitted to euthanasia and a sciatic nerve sample sent for histological analysis. Axons proximal and distal to the neurorrhaphy were counted with axonal regeneration index measurement. RESULTS: We observed that the number of axons distal to neurorrhaphy increases with the amount of hyperbaric oxygen chamber exposure, the results were more expressive from the third week of treatment. However, the statistical analysis found no significant difference between the groups. CONCLUSION: The descriptive analysis suggests benefit of using hyperbaric oxygen chamber directly proportional to the time of therapy. The study, however, did not present statistically relevant results, probably due to the reduced sample size. Subsequent studies with more significant sampling would be of great value. Level of Evidence II, Prospective Comparative Study.