Table 2 The change of kidney pathological scores and α-SMA expression scores of DN rat before and after injection of contrast agent

Pathological scores

LOCM

1.02 ± 0.15

1.40 ± 0.14*

1.40 ± 0.13*

1.78 ± 0.15*

1.87 ± 0.14*

IOCM

1.27 ± 0.15

1.33 ± 0.10*

1.43 ± 0.12*

1.80 ± 0.14*

P

–

0.145

0.341

0.001

0.426

α-SMA expression scores

LOCM

3.43 ± 0.20

3.79 ± 0.51

3.73 ± 0.51

4.23 ± 0.17*

4.19 ± 0.38*

IOCM

3.44 ± 0.18

3.60 ± 0.25

3.73 ± 0.30

4.02 ± 0.26*

P

–

0.187

0.642

0.013

0.424