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

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1002-1006
Number of pages5
JournalClinical and Experimental Pharmacology and Physiology
Volume27
Issue number12
DOIs
Publication statusPublished - 2000

Keywords

  • Anti-oxidant
  • Free radicals
  • Trilinolein

ASJC Scopus subject areas

  • Physiology
  • Pharmacology (medical)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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