OBJECTIVE Ferumoxtran-10 is an MRI contrast agent, which accumulates in macrophages and induces magnetic susceptibility artifacts (MSAs). We evaluated the ability of ferumoxtran-10-enhanced MRI to quantify focal macrophage infiltration in the aortic wall of hypercholesterolemic rabbits. METHODS AND RESULTS Six weeks after a double-balloon injury of the infrarenal aorta, 12 hypercholesterolemi...

Objective: To investigate the effects of Chinese yellow wine on the synthesis of homocysteine (Hcy)-induced intracellular MMP-2 in rat vascular endothelial cells (VECs). Methods: Isolation, cultivation, purification and identification of vascular endothelial cells of rat thoracic aorta in vitro were conducted. The VECs in passages 3 to 4 were used in all studies. HCY was used to induce VECs to ...

Matrix metalloproteinase (MMP)-2 and -9 (gelatinases) participate in extracellular protein remodeling. Moreover, they are involved in the development of hepatic fibrosis. The goal of this study was to evaluate liver gelatinase activities after erythropoietin (Epo) treatment (1U/dose, sc) in experimentally damaged livers of rats treated with D-galactosamine (Gal, 800 mg/kg/dose, ip). Sixty rats ...

PURPOSE To investigate the effect of transforming growth factor (TGF)-beta2 on the expression of (1) elastin and type VI collagen (ColVI), (2) extracellular matrix (ECM)-degrading matrix-metalloproteinases (MMPs) and regulators of their activity/activation, and (3) the involvement of connective tissue growth factor (CTGF) in the TGF-beta2-mediated regulations in cultured human type-1A and -1B o...

Adiponectin, circulating levels of which are reduced in obesity and diabetes, mediates cardiac extracellular matrix (ECM) remodeling in response to pressure overload (PO). Here, we performed a detailed temporal analysis of progressive cardiac ECM remodelling in adiponectin knockout (AdKO) and wild-type (WT) mice at 3 days and 1, 2, 3 and 4 weeks following the induction of mild PO via minimally ...

Background: The effects of Chinese yellow wine on the production of homocysteine (Hcy) induced intracellular MMP-2 in cultured rats vascular endothelial cells (VECs) has not been investigated. Methods: Isolation, cultivation, purification and identification of vascular endothelial cells of rat thoracic aorta in vitro were conducted. The VECs in passages 3 to 4 were used in all studies. HCY was ...

Matrix metalloproteinases (MMPs) are a family of proteinases that degrade the basement membrane and have been implicated in promoting tumor metastasis. MMP-2, one member of this family, was recently found to be a p53 target and subject to p53 upregulation. In this study, we examined the correlation between the expression of MMP-2 and the increased expression of p53 after gamma-irradiation. Thre...

Gelatinase A, a member of the matrix metalloproteinase (MMP) family, plays an important role during angiogenesis. It is constitutively expressed by human endothelial cells as a latent enzyme and requires activation. Thrombin is the only described physiological inducer of gelatinase A in human endothelial cells. In this study, we investigated the mechanisms of gelatinase A activation by another ...

The present work is undertaken to study the expression of levels of gelatinases in tumorogenesis by Rous sarcoma virus(RSV) in layer chicks and explored the possibility of using gelatinases as potential biological markers in metastatic neoplasms. Two days old chicks (40) were divided into two groups (Gp I and Gp II). Gp-I (20) treated with Rous sarcoma virus for tumor induction. The Gp II (cont...