期刊
BULLETIN OF EXPERIMENTAL BIOLOGY AND MEDICINE
卷 136, 期 3, 页码 231-234出版社
SPRINGER
DOI: 10.1023/B:BEBM.0000008970.91695.03
关键词
heart; beta-adrenoceptors; sympathetic control; rat
Electrical stimulation of the right stellate ganglion produces a positive chronotropic effect in 21-, 56- and 100-day-old rats. The response of the heart rate to suprathreshold stimulation increased from the 21st to 100th day. By contrast, during beta-adrenoceptor blockade the heart rate response decreased. The data suggest that the role of beta-adrenoceptor in the regulation of cardiac chronotropic function increased with age.
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