Effect on expression of vascular smooth muscle cell calcium channel in rats exposed in low temperature / 中华劳动卫生职业病杂志
Chinese Journal of Industrial Hygiene and Occupational Diseases
;
(12): 224-226, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-272659
ABSTRACT
<p><b>OBJECTIVE</b>To observe the expression of vascular smooth muscle cells calcium channel α1C subunit (LTCCα1C) in rats exposed in low temperature.</p><p><b>METHODS</b>Cold-induced hypertension was established and blood pressure was measured every two weeks. The mRNA expression of L type calcium channel α1C was determined by RT-PCR.</p><p><b>RESULTS</b>The blood pressure of the rats exposed to cold environment increased. The blood pressure of experimental groups [(102.8 ± 2.25) mm Hg] began to increase from the first two weeks, compared with the control group [(89.2 ± 3.73) mm Hg], there were significant difference (P < 0.05). The blood pressure of experimental groups were (114.5 ± 4.21), (121.9 ± 3.03) mm Hg respectively at 4, 6 weeks. Compared with the control group, the expression of LTCCα1C mRNA of the cold exposure group increased significantly (P < 0.01). There was a significant correlation between the expression of LTCCα1C mRNA and the blood pressure of the rats (r = 0.86, P < 0.01).</p><p><b>CONCLUSION</b>Repeated cold exposure can establish cold-induced hypertension, and the level of vascular smooth muscle cells LTCCα1C expression increase.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Blood Pressure
/
Rats, Sprague-Dawley
/
Cold Temperature
/
Calcium Channels, L-Type
/
Hypertension
/
Metabolism
/
Muscle, Smooth, Vascular
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Industrial Hygiene and Occupational Diseases
Year:
2011
Type:
Article
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