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作者

Gavin Brooks Xue-Mei Yu Yuequn Wang M. James C. Crabbe Michael J. Shattock Jane V. Harper

作者单位

Univ Reading, Cardiovasc Res Grp, Sch Anim & Microbial Sci, Div Cell & Mol Biol, Reading R 6AJ, Berks, England 7EH, England Hunan Normal Univ, Coll Life Sci, Changsha 410081, Hunan, Peoples R China Taishan Med Coll, Affiliated Hosp, Endocrinol Sect, Dept Med, Tai An, Shandong, Peoples R China St Thomas Hosp, Univ London Kings Coll, Rayne Inst, Ctr Cardiovasc Biol & Med, London S

刊名

Journal of Pharmacy and Pharmacology

年份

2003

卷号

Vol.55 NO.4

页码

519-526

关键词

Animals Anti-Inflammatory Agents, Non-Steroidal Aorta Aspirin Cell Division Cell Line Diclofenac Dose-Response Relationship, Drug Flow Cytometry Ibuprofen Indomethacin Muscle, Smooth, Vascular Rats Sodium Salicylate Sulindac Support, Non-U.S. Govt

分类号

615.1

摘要

Abnormal vascular smooth muscle cell (VSMC) proliferation plays an important role in the pathogenesis of both atherosclerosis and restenosis. Recent studies suggest that high-dose salicylates, in addition to inhibiting cyclooxygenase activity, exert an antiproliferative effect on VSMC growth both in-vitro and in-vivo. However, whether all non-steroidal anti-inflammatory drugs (NSAIDs) exert similar antiproliferative effects on VSMCs, and do so via a common mechanism of action, remains to be show...更多

Abnormal vascular smooth muscle cell (VSMC) proliferation plays an important role in the pathogenesis of both atherosclerosis and restenosis. Recent studies suggest that high-dose salicylates, in addition to inhibiting cyclooxygenase activity, exert an antiproliferative effect on VSMC growth both in-vitro and in-vivo. However, whether all non-steroidal anti-inflammatory drugs (NSAIDs) exert similar antiproliferative effects on VSMCs, and do so via a common mechanism of action, remains to be shown. In this study, we demonstrate that the NSAIDs aspirin, sodium salicylate, diclofenac, ibuprofen, indometacin and sulindac induce a dose-dependent inhibition of proliferation in rat A10 VSMCs in the absence of significant cytotoxicity. Flow cytometric analyses showed that exposure of A10 cells to diclofenac, indometacin, ibuprofen and sulindac, in the presence of the mitotic inhibitor, nocodazole, led to a significant G0/G1 arrest. In contrast, the salicylates failed to induce a significant G1 arrest since flow cytometry profiles were not significantly different from control cells. Cyclin A levels were elevated, and hyperphosphorylated p107 was present at significant levels, in salicylate-treated A10 cells, consistent with a post-G1/S block, whereas cyclin A levels were low, and hypophosphorylated p107 was the dominant form, in cells treated with other NSAIDs consistent with a G1 arrest. The ubiquitously expressed cyclin-dependent kinase (CDK) inhibitors, p21 and p27, were increased in all NSAID-treated cells. Our results suggest that diclofenac, indometacin, ibuprofen and sulindac inhibit VSMC proliferation by arresting the cell cycle in the G1 phase, whereas the growth inhibitory effect of salicylates probably affects the late S and/or G2/M phases. Irrespective of mechanism, our results suggest that NSAIDs might be of benefit in the treatment of certain vasculoproliferative disorders.收起

学科

【SCI学科】PHARMACOLOGY & PHARMACY 【ESI学科】PHARMACOLOGY & TOXICOLOGY

影响因子

2017年:2.309;2016年:2.405;2015年:2.363;2014年:2.264;2013年:2.161

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期刊

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