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Content Provider | IEEE Xplore Digital Library |
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Author | Chapman, G.B. Durante, W. Hellums, J.D. Schafer, A.I. |
Copyright Year | 1999 |
Description | Author affiliation: Dept. of Bioeng., Rice Univ., Houston, TX, USA (Chapman, G.B.) |
Abstract | Smooth muscle cells (SMC) are the major cellular component of the blood vessel wall and are continuously exposed to cyclic stretch due to pulsatile blood flow. This study examined the effects of a physiologically relevant level of cyclic stretch on rat aortic vascular SMC proliferation. Treatment of static SMC with serum, platelet-derived growth factor (PDGF), or thrombin stimulated SMC proliferation while exposure of SMC to cyclic stretch blocked the proliferative effect of these growth factors. The stretch-mediated inhibition in SMC growth was not due to cell detachment or increased cell death. Flow cytometry analysis revealed that cyclic stretch arrested SMC in the G/sub 0//G/sub 1/ phase of the cell cycle. Stretch-inhibited G/sub 1//S phase transition was associated with a decrease in retinoblastoma protein phosphorylation (Rb) and with a selective increase in the cyclin-dependent kinase inhibitor p21, but not p27. These results demonstrate that cyclic stretch inhibits SMC growth by blocking cell cycle progression and suggests that physiological levels of cyclic stretch contribute to vascular homeostasis by maintaining SMC in a quiescent, nonproliferative state. |
File Size | 131492 |
File Format | |
ISBN | 0780356748 |
ISSN | 1094687X |
DOI | 10.1109/IEMBS.1999.802037 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1999-10-13 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Muscles Sliding mode control Proteins Blood vessels Blood flow Inhibitors Educational institutions Cells (biology) Pathogens Diseases |
Content Type | Text |
Resource Type | Article |
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