Effect of Spinal Nerve Ligation on The Expression of Tweak and Fn14 Genes in EDL Mucsle of Wistar Rats After HIT Training

Document Type : Research Paper

Authors

1 Department of Physical Education and Sport Sciences, Faculty of Literature and Humanities, Vali-e-Asr University, Rafsanjan, Iran.

2 Department of Physical Education and Sport Science, Kerman Branch, Islamic Azad University, Kerman, Iran. & Physiology Research Center, Kerman University of Medical, Kerman, Iran

Abstract

Background and Purpose: The Tweak/Fn14 pathway regulated various physiological responses including cell survival, proliferation, differentiation, angiogenesis, migration and apoptosis. The purpose of the present study was to investigate the effect of SNL on the expression of Tweak and Fn14  genes in the EDL muscle of Wistar rats after HIT training. 
Materials and methods: For this purpose, 24 male Wistar rats were divided into 2 groups of control (C) (n=12) and training (HIT) (n=12). After one-week familiarization, training group participate in four HIT training. Then, they were randomly assigned to HIT (n=6) and HIT-SNL (n=6) groups. At the same time, the control group was divided into two groups: control (C) (n=6) and SNL (C-SNL) (n=6). 4 weeks after the SNL, wistar rats were sacrificed  then EDL and soleuse muscle exetracted.Then gene expressions of Tweak and Fn14 measured with Real time PCR technique. Data were analyzed using 2-way ANOVA.
Results: The results showed that inactivity via SNL has a significant increased of the expression of Tweak and Fn14 genes (P=0.000and P=0.002, respectively). Also, performed before SNL reduced the expression of Tweak and Fn14 genes in SNL-T compared with SNL-C (P=0.0001 and P=0.001 respectively). In addition, the findings indicated that SNL had a significant effect on the weight of soleuse muscle mass/ tibia length (P=0.01). On the other hand, HIT training before SNL significantly increased  ratio weight soleuse muscle mass/ tibia length (P=0.03).
Conclusion: The decrease in activity by SNL is associated with increased in expression of Tweak and Fn14 genes. On the other hand, HIIT training have been effective in reducing atrophic genes. According to these findings, performing HIT training before inactivity can reduced the muscular atrophy process.

Keywords


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