The renal mRNA levels of TGF-β1 (Fig. 3a), HGF (Fig. 3b), and WT-1 (Fig. 3d) were significantly higher whereas renal mRNA levels of BMP-7 (Fig. 3c) and Pax-2 (Fig. 3e) were significantly lower in CKD rats compared with those of healthy rats. Here, BMP7 is linked to chronic kidney disease.