Table 1. Mean staining score in four groups with α-SMA and E-cadherin .

Group	Mean score (SD)	P
α-SMA staining
1 (Control)	1.16 (0.4)
2 (Diabetic)	3.37 (0.51)	<0.001*
3 (Diabetic & tempol)	2.66 (0.51)	NS
4 (Tempol)	1.33 (0.51)	NS
E-cadherin staining
1 (Control)	2.83 (0.75)
2 (Diabetic)	1.37 (0.51)	0.017*
3 (Diabetic & tempol)	2.00 (0.89)	NS
4 (Tempol)	2.00 (0.89)	NS

*Comparing to group 1(control), NS; not significant.