ARYA Atherosclerosis Journal

Adiponectin inhibits oxidized low density lipoprotein-induced increase in matrix metalloproteinase 9 expression in vascular smooth muscle cells

Document Type : Original Article(s)

Authors

Maryam Saneipour 1
Keihan Ghatreh-Samani 2
Esfandiar Heydarian 3
Effat Farrokhi 4
Narges Abdian 4

1 MSc Student, Clinical Biochemistry Research Center, Shahrekord University of Medical Science, Shahrekord, Iran

2 Assistant Professor, Clinical Biochemistry Research Center, Shahrekord University of Medical Science, Shahrekord, Iran

3 Associate Professor, Clinical Biochemistry Research Center, Shahrekord University of Medical Science, Shahrekord, Iran

4 PhD Candidate, Cellular and Molecular Research Center, Shahrekord University of Medical Science, Shahrekord, Iran

Abstract
BACKGROUND: High expression of matrix metalloproteinase 9 (MMP9) during vascular injury and inflammation plays an important role in atherosclerotic plaque formation and rupture. In the process of atherosclerosis, oxidized low-density lipoprotein (oxLDL) upregulates MMP9 in human aortic vascular smooth muscle cells (HA/VSMCs). Adiponectin is an adipose tissue-derived hormone that has been shown to exert anti-atherogenic and anti-inflammatory effects. The aim of this study was to investigate the effect of adiponectin on MMP9 expression under pathogenic condition created by oxLDL in HA/VSMCs. METHODS: In this experimental study, HA/VSMC were stimulated with oxLDL alone and in the presence of adiponectin for 24 and 48 h. The expression of MMP9 gene was determined by real-time polymerase chain reaction method. The protein level of this gene was investigated by western blotting technique. RESULTS: An oxLDL increased MMP9 expression 2.16 ± 0.24- and 3.32 ± 0.25-fold after 24 and 48 h, respectively and adiponectin decreased oxLDL-induced MMP9 expression in a time-dependent manner. CONCLUSION: These results show that adiponectin changes extracellular matrix by reducing MMP9 mRNA and protein, therefore, may stabilize lesions and reduce atheroma rupture. 

Keywords

Matrix Metalloproteinase 9
Adiponectin
Oxidized Low Density Lipoprotein
ARYA Atherosclerosis Journal
Volume 11, Issue 3 - Serial Number 3
May and June 2015
Pages 191-195

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