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논문 기본 정보

자료유형
학술저널
저자정보
박형진 (가톨릭대학 의학부 생리학교실) 심여림 (가톨릭대학 의학부 생리학교실) 조양혁 (가톨릭대학 의학부 생리학교실)
저널정보
대한생리학회 대한생리학회지 대한생리학회지 제17권 제2호
발행연도
1983.1
수록면
103 - 107 (5page)

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초록· 키워드

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This experiment was undertaken to see whether dopamine has any effect on a uterine function and whether the uterus has a dopamine receptor. We used 14 female rats in the diestrus state which was identified by a vaginal smear. Under ether anesthesia, 3 pieces(1 cm length) from each side of the uterus were dissected out and mounted in 3 tissue chambers (4 cm diameter, 10 cm height) that contained Krebs-Ringer solution. The solution was continuously aerated with 95% $O_2$ containing 5% $CO_2$ and kept $37^{\circ}C$ consistantly during the whole experimental period. The spontaneous contractile activity of the isolated uterus was recorded using a force transducer. After a recovery period of 15 min in the chamber, the following experiments were carried out. In 7 rats, each piece of the uterus was received dopamine at concentrations of $10^{-4}$, $10^{-5}$ or $10^{-6}\;M$ for 10 min and then followed by domperidone at a concentration of $10^{-5}\;M$. In another 7 rats, each piece was received domperidone, a specific peripheral dopamine receptor antagonist, was administered at a concentration of $10^{-5}\;M$ for 5 min prior to dopamine at concentrations of $10^{-4}$, $10^{-5}$, or $10^{-6}\;M$. Dopamine inhibited the spontaneous uterine contraction dose-dependently (r=0.99, p<.01). The inhibited contractility by dopomine was significantly (P<.05) resumed by post-treatment of domperidone. Pre-treatment of domperidone also blocked significantly(p<.05) the inhibitory effect of dopamine. It is concluded from these results that dopamine has inhibitory role upon the spontaneous uterine contraction of the rat in the diestrus state and domperidone antagonized the inhibitory effect of dopamine. These results suggest strongly that dopamine may exert the inhibitory effect via the dopamine receptor in the rat uterus.

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