Chan-Gyun Oh, Yoon-A Jeon, Young Jae Lee, Tae-Beom Seo
{"title":"The effects of combined low-intensity exercise with naringenin on regenerating protein family <i>in vivo</i> and <i>in vitro</i> after sciatic nerve injury.","authors":"Chan-Gyun Oh, Yoon-A Jeon, Young Jae Lee, Tae-Beom Seo","doi":"10.12965/jer.2550124.062","DOIUrl":null,"url":null,"abstract":"<p><p>The purpose of this study was to investigate the effect of combining low-intensity treadmill exercise with naringenin treatment on the expression of axonal regrowth-related proteins following sciatic nerve injury (SNI). The extracts were evaluated for cytotoxicity and cell viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the effects of the extracts were analyzed <i>in vitro</i> using primary cultured Schwann cells and dorsal root ganglion neurons (DRGs). <i>In vivo</i>, axonal regrowth-related protein expression levels and neurite outgrowth were assessed through Western blot and immunofluorescence staining, respectively. The results indicated that neither extract exhibited cytotoxicity. In primary cultured Schwann cells, 10 μM naringin and 10 μM/50 μM naringenin significantly increased growth associated protein-43 (GAP-43) expression, while in DRGs, both naringin and naringenin treatments resulted in increased neurite length. For <i>in vivo</i> experiment, all animals were divided into the vehicle group, the naringin-treated group post-SNI (Gin), the naringenin-treated group post-SNI (Genin), the naringin and exercise group post-SNI (Gin+Ex), and the naringenin and exercise group post-SNI (Genin+Ex). Naringenin treatment after early SNI enhanced GAP-43 expression. Following 14 days of exercise combined with treatment, both GAP-43 and phosphorylated extracellular signal-regulated kinase levels were significantly increased in the Genin and the Genin+Ex groups, whereas phosphorylated-protein kinase B significantly increased only in the Genin+Ex group. Our findings suggest that naringenin, when used in conjunction with low-intensity treadmill exercise, may effectively promote the expression of axonal growth-related proteins following SNI.</p>","PeriodicalId":15771,"journal":{"name":"Journal of Exercise Rehabilitation","volume":"21 2","pages":"53-60"},"PeriodicalIF":1.2000,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12061777/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Exercise Rehabilitation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12965/jer.2550124.062","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/4/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"REHABILITATION","Score":null,"Total":0}
引用次数: 0
Abstract
The purpose of this study was to investigate the effect of combining low-intensity treadmill exercise with naringenin treatment on the expression of axonal regrowth-related proteins following sciatic nerve injury (SNI). The extracts were evaluated for cytotoxicity and cell viability using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the effects of the extracts were analyzed in vitro using primary cultured Schwann cells and dorsal root ganglion neurons (DRGs). In vivo, axonal regrowth-related protein expression levels and neurite outgrowth were assessed through Western blot and immunofluorescence staining, respectively. The results indicated that neither extract exhibited cytotoxicity. In primary cultured Schwann cells, 10 μM naringin and 10 μM/50 μM naringenin significantly increased growth associated protein-43 (GAP-43) expression, while in DRGs, both naringin and naringenin treatments resulted in increased neurite length. For in vivo experiment, all animals were divided into the vehicle group, the naringin-treated group post-SNI (Gin), the naringenin-treated group post-SNI (Genin), the naringin and exercise group post-SNI (Gin+Ex), and the naringenin and exercise group post-SNI (Genin+Ex). Naringenin treatment after early SNI enhanced GAP-43 expression. Following 14 days of exercise combined with treatment, both GAP-43 and phosphorylated extracellular signal-regulated kinase levels were significantly increased in the Genin and the Genin+Ex groups, whereas phosphorylated-protein kinase B significantly increased only in the Genin+Ex group. Our findings suggest that naringenin, when used in conjunction with low-intensity treadmill exercise, may effectively promote the expression of axonal growth-related proteins following SNI.
期刊介绍:
The Journal of Exercise Rehabilitation is the official journal of the Korean Society of Exercise Rehabilitation, and is published six times a year. Supplementary issues may be published. Its official abbreviation is "J Exerc Rehabil". It was launched in 2005. The title of the first volume was Journal of the Korean Society of Exercise Rehabilitation (pISSN 1976-6319). The journal title was changed to Journal of Exercise Rehabilitation from Volume 9 Number 2, 2013. The effects of exercise rehabilitation are very broad and in some cases exercise rehabilitation has different treatment areas than traditional rehabilitation. Exercise rehabilitation can be presented as a solution to new diseases in modern society and it can replace traditional medicine in economically disadvantaged areas. Exercise rehabilitation is very effective in overcoming metabolic diseases and also has no side effects. Furthermore, exercise rehabilitation shows new possibility for neuropsychiatric diseases, such as depression, autism, attention deficit hyperactivity disorder, schizophrenia, etc. The purpose of the Journal of Exercise Rehabilitation is to identify the effects of exercise rehabilitation on a variety of diseases and to identify mechanisms for exercise rehabilitation treatment. The Journal of Exercise Rehabilitation aims to serve as an intermediary for objective and scientific validation on the effects of exercise rehabilitation worldwide. The types of manuscripts include research articles, review articles, and articles invited by the Editorial Board. The Journal of Exercise Rehabilitation contains 6 sections: Basic research on exercise rehabilitation, Clinical research on exercise rehabilitation, Exercise rehabilitation pedagogy, Exercise rehabilitation education, Exercise rehabilitation psychology, and Exercise rehabilitation welfare.