Dataset Information
Dabigatran etexilate retards the initiation and progression of atherosclerotic lesions and inhibits the expression of oncostatin M in apolipoprotein E-deficient mice.
Ontology highlight
ABSTRACT: Objective
Thrombin has multiple proatherogenic effects including platelet activation and the induction of inflammatory processes. Recently, the cytokine oncostatin M has been shown to have proinflammatory effects. This study was designed to investigate the effects of thrombin inhibition on the initiation and progression of atherosclerosis and on the expression of oncostatin M.Methods
Apolipoprotein E-deficient mice at different ages were fed the thrombin inhibitor dabigatran etexilate. The mean lesion area was measured in the aortic sinus and in the innominate artery. CD45-positive cells within the aortic tissue were measured by flow cytometry. Oncostatin M expression was measured in the tissue sections by immunocytochemistry.Results
Treatment with dabigatran etexilate resulted in a significant reduction of the mean area of atherosclerotic lesions in the aortic sinus in both the young mice (11,176±1,500 ?m(2) (control) versus 3,822±836 ?m(2) (dabigatran etexilate), P<0.05) and selectively in the older mice at 28 weeks (234,099±13,500 ?m(2) (control) versus 175,226±16,132 ?m(2) (dabigatran etexilate), P<0.05). There were also fewer CD45-positive cells within the aortas of the dabigatran-treated mice and enhanced NO production in endothelial cells pretreated with dabigatran. In addition, the expression of oncostatin M was reduced in the lesions of dabigatran etexilate-treated mice.Conclusion
Inhibition of thrombin by dabigatran retards the development of early lesions and the progression of some established lesions in ApoE-/- mice. It improves endothelial function and retards macrophage accumulation within the vascular wall. Dabigatran also inhibits the expression of oncostatin M, and this suggests that oncostatin M may play a role in the initiation and progression of atherosclerosis.
SUBMITTER: Preusch MR
PROVIDER: S-EPMC4572747 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
Publications
Dabigatran etexilate retards the initiation and progression of atherosclerotic lesions and inhibits the expression of oncostatin M in apolipoprotein E-deficient mice.
Drug design, development and therapy 20150910
<h4>Objective</h4>Thrombin has multiple proatherogenic effects including platelet activation and the induction of inflammatory processes. Recently, the cytokine oncostatin M has been shown to have proinflammatory effects. This study was designed to investigate the effects of thrombin inhibition on the initiation and progression of atherosclerosis and on the expression of oncostatin M.<h4>Methods</h4>Apolipoprotein E-deficient mice at different ages were fed the thrombin inhibitor dabigatran etex ...[more]