Effects of trilinolein on superoxide dismutase activity and mRNA levels in aortic smooth muscle cells

Paul Chan, Jun Jen Chang, Fu Chean Chen, Ming Shun Wu, Brian Tomlinson, Juei Tang Cheng

研究成果: 雜誌貢獻文章同行評審

4 引文 斯高帕斯(Scopus)

摘要

1. Atherosclerotic cardiovascular disease is still the leading cause of death in Western countries. Oxygen free radicals are considered to be intimately involved in the development of atherosclerosis. Anti-oxidants may help to protect mammalian cells from the damage induced by these reactive oxygen species. Many reports have indicated that anti-oxidants used in the treatment or prevention of disease could modify the levels of superoxide dismutase (SOD). However, the effects of long-term anti-oxidant treatment on the levels of SOD in smooth muscle cells (SMC) is still unclear. In the present study, the effects of the lipophilic anti-oxidant trilinolein on the activity and gene expression of SOD in SMC were evaluated. 2. After 2 days incubation with 0.1 μmol/L trilinolein, the activity and mRNA levels of SOD were increased in rat aortic SMC (A7r5), but there was no significant change in these parameters with a higher concentration of 1 μmol/L trilinolein. 3. In contrast, after 7 days incubation with trilinolein, both the activity and mRNA levels of SOD were lowered in a dose-dependent manner. 4. These data emphasize the importance of choosing an optimal dosage for supplementation with anti-oxidants in humans for the scavenging of oxygen free radicals.

原文英語
頁(從 - 到)1002-1006
頁數5
期刊Clinical and Experimental Pharmacology and Physiology
27
發行號12
DOIs
出版狀態已發佈 - 2000

ASJC Scopus subject areas

  • 生理學
  • 藥學(醫學)
  • 藥理學、毒理學和藥劑學 (全部)

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