Cellular Responses to Mechanical Stress Selected Contribution: Mechanical strain increases force production and calcium sensitivity in cultured airway smooth muscle cells
Cellular Responses to Mechanical Stress Selected Contribution: Mechanical strain increases force production and calcium sensitivity in cultured airway smooth muscle cells
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细胞对机械应力的反应选定的贡献:机械应变增加了培养的气道平滑肌细胞的力产生和钙敏感性
DOI:
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
F. Brozovich
中科院分区:
文献类型:
--
作者:
Paul G. Smith;C. Roy;S. Fisher;Qi;F. Brozovich
Smith, Paul G., Chaity Roy, Steven Fisher, Qi-Quan Huang, and Frank Brozovich. Selected Contribution: Mechanical strain increases force production and calcium sensitivity in cultured airway smooth muscle cells. J Appl Physiol 89: 2092–2098, 2000.—Cultured airway smooth muscle cells subjected to cyclic deformational strain have increased cell content of myosin light chain kinase (MLCK) and myosin and increased formation of actin filaments. To determine how these changes may increase cell contractility, we measured isometric force production with changes in cytosolic calcium in individual permeabilized cells. The pCa for 50% maximal force production was 6.6 6 0.4 in the strain cells compared with 5.9 6 0.3 in control cells, signifying increased calcium sensitivity in strain cells. Maximal force production was also greater in strain cells (8.6 6 2.9 vs. 5.7 6 3.1 mN). The increased maximal force production in strain cells persisted after irreversible thiophosphorylation of myosin light chain, signifying that increased force could not be explained by differences in myosin light chain phosphorylation. Cells strained for brief periods sufficient to increase cytoskeletal organization but insufficient to increase contractile protein content also produced more force, suggesting that straininduced cytoskeletal reorganization also increases force production.
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影响因子:
3.7
作者:
Paul G. Smith;Rosa Garcia;Lembi Kogerman
通讯作者:
Paul G. Smith;Rosa Garcia;Lembi Kogerman
影响因子:
20.1
作者:
Fisher,SA;Ikebe,M;Brozovich,F
通讯作者:
Brozovich,F
DOI:
10.1152/ajplung.1999.277.2.l343
发表时间:
1999
期刊:
The American journal of physiology
影响因子:
--
作者:
Smith,PG;Roy,C;Dreger,J;Brozovich,F
通讯作者:
Brozovich,F
DOI:
10.1007/3-540-64753-8_5
发表时间:
1999
期刊:
Reviews of physiology, biochemistry and pharmacology
影响因子:
--
作者:
A. Somlyo;Xuqiong Wu;L. Walker;A. Somlyo
通讯作者:
A. Somlyo;Xuqiong Wu;L. Walker;A. Somlyo
DOI:
10.1165/ajrcmb.10.1.8292386
发表时间:
1994
影响因子:
6.4
作者:
Smith,PG;Janiga,KE;Bruce,MC
通讯作者:
Bruce,MC