Expression of mRNA for specific fibroblast growth factors associates with that of the myogenic markers MyoD and proliferating cell nuclear antigen in regenerating and overloaded rat plantaris muscle

Acta Physiologica
Y TanakaK Ishii

Abstract

To examine the relations between specific fibroblast growth factors (FGFs) and satellite cell activation during muscle regeneration and hypertrophy in vivo, we measured mRNA expression of FGFs and myogenic markers in rat plantaris muscle after bupivacaine administration and synergist ablation. mRNA levels for MyoD, myogenin, proliferating cell nuclear antigen (PCNA), p21, M-cadherin, Pax7, FGF-1, FGF-2, FGF-3, FGF-4, FGF-5, FGF-6, FGF-7, FGF-8 and hepatocyte growth factor (HGF) were measured continually for up to 72 h after bupivacaine administration and synergist ablation. FGF-5, FGF-7 and HGF proteins were immunostained at 72 h after bupivacaine administration. MyoD and PCNA mRNAs started increasing 24 h after bupivacaine administration. Myogenin, p21, M-cadherin and Pax7 mRNAs started to increase after 48 and 72 h. After synergist ablation, MyoD, PCNA, M-cadherin and Pax7 mRNAs had increased at 24 and 48 h, and myogenin and p21 mRNAs at 12 and 24 h. FGF-1, FGF-7 and HGF mRNAs after the treatments started to increase at the same time as MyoD and PCNA mRNAs. FGF-5 was expressed at the same time as MyoD and PCNA mRNAs after bupivacaine administration but did not after the ablation. FGF-2, FGF-3, FGF-4, FGF-6 and FGF-8 mRNAs wer...Continue Reading

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Citations

Aug 25, 2012·Journal of Molecular Histology·Yan-Yan FanXing-Biao Li
Jun 23, 2010·International Journal of Biological Sciences·Susan Tsivitse
Aug 28, 2015·Journal of Physical Therapy Science·Shoji TanakaTakao Nakagawa
Sep 22, 2015·Cell Reports·Shanshan HuangXiao-Jiang Li

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