Abstract:
:Transforming growth factor-β1 (TGF-β1) has been thought to play a major role during cardiac fibrosis in the development of diabetic cardiomyopathy, and cardiac fibrosis mainly as a result of an increase of collagen type III occurs in the human hearts with diabetes. Thrombospondin-1 (TSP-1) has been reported to activate the latent complex of TGF-β1. We examined the effects of TSP-1 on the expression of TGF-β1 and collagen type III by rat cardiac fibroblasts in high ambient glucose. We demonstrated that high glucose induces the mRNA and protein expression of collagen type III, TGF-β1, and TSP-1. Furthermore, the mRNA and protein expression of collagen type III induced by high glucose was downregulated after treatment with TGF-β1 antibody, or TSP-1 siRNA. The expression of TGF-β1 increased by high glucose was also reversed after treatment with TSP-1 siRNA. Our findings suggest that the TSP-1 participates in the upregulation of TGF-β1, collagen type III by high glucose and may provide new therapeutic strategies for diabetic cardiomyopathy.
journal_name
Mol Cell Biochemjournal_title
Molecular and cellular biochemistryauthors
Tang M,Zhou F,Zhang W,Guo Z,Shang Y,Lu H,Lu R,Zhang Y,Chen Y,Zhong Mdoi
10.1007/s11010-010-0590-7subject
Has Abstractpub_date
2011-01-01 00:00:00pages
49-56issue
1-2eissn
0300-8177issn
1573-4919journal_volume
346pub_type
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