| First Author | Wilck N | Year | 2012 |
| Journal | Arterioscler Thromb Vasc Biol | Volume | 32 |
| Issue | 6 | Pages | 1418-26 |
| PubMed ID | 22516063 | Mgi Jnum | J:197090 |
| Mgi Id | MGI:5490739 | Doi | 10.1161/ATVBAHA.112.249342 |
| Citation | Wilck N, et al. (2012) Attenuation of early atherogenesis in low-density lipoprotein receptor-deficient mice by proteasome inhibition. Arterioscler Thromb Vasc Biol 32(6):1418-26 |
| abstractText | OBJECTIVE: Low and nontoxic proteasome inhibition has anti-inflammatory, antiproliferative, and antioxidative effects on vascular cells in vitro and in vivo. We hypothesized that low-dose inhibition of the proteasome could provide antiatherogenic protection. The present study investigated the effect of low-dose proteasome inhibition on early lesion formation in low-density lipoprotein receptor-deficient mice fed a Western-type diet. METHODS AND RESULTS: Male low-density lipoprotein receptor-deficient mice, 10 weeks old, were fed a Western-type diet for 6 weeks with intraperitoneal injections of bortezomib or solvent. Bortezomib was injected at a dose of 50 mug/kg body weight. Cholesterol plasma levels were not affected by bortezomib treatment. En face Oil Red O staining of aortae and aortic root cryosections demonstrated significant reduction of atherosclerotic lesion coverage in bortezomib-treated animals. Bortezomib significantly reduced vascular cellular adhesion molecule-1 expression and macrophage infiltration as shown by histological analysis. Bortezomib treatment resulted in a significant reduction of superoxide content, lipid peroxidation and protein oxidation products, serum levels of monocyte chemoattractant protein-1, and interleukin-6. Gene expression microarray analysis showed that expressional changes induced by Western-type diet were attenuated by treatment with low-dose bortezomib. CONCLUSIONS: Low-dose proteasome inhibition exerts antioxidative and anti-inflammatory effects and attenuates development of atherosclerotic lesions in low-density lipoprotein receptor-deficient mice. |
