Figure 7

Local cues and activation of transcription factors. (A) Gene expression analysis. Quantitative gene expression analysis of the injured tissues shows relative mRNA of Il-1β and Tnfα expressions at days 7, 14 and 21 post muscle injury. (B) NF-κB activation in MFs of injured muscle. Nuclear translocation of p65 subunit at different times of the injury is shown. (C) Effect of Tyrphostin AG-370 on MFs in vitro. MFs are isolated from day 21 injured muscles and cultured for 24 h in the presence of plain medium (sham control) and Tyrphostin (20 μM). The resultant cells were analysed for the localization of p65NF-κB, Foxo3a and Caspase3 using specific antibodies. The bar diagrams show respective responses, determined on the basis of morphometric analyses of 6 fields each (20× magnification) using the ImageJ software. Data were presented as mean ± SEM. ***p < 0.001, **p < 0.01.