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논문 기본 정보

자료유형
학술저널
저자정보
Lim, Dong-Yoon (Department of Pharmacology, College of Medicine, Chosun University) Lee, Yong-Gyoon (Department of Pharmacology, College of Medicine, Chosun University) Kim, Il-Hwan (Department of Pharmacology, College of Medicine, Chosun University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제25권 제4호
발행연도
2002.1
수록면
511 - 521 (11page)

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이 논문의 연구 히스토리 (9)

2004

Influence of FCCP on Catecholamine Release in the Rat Adrenal Medulla
Lim ,  Dong-Yoon ,  Jo 외 11명 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 2004.01 학술저널

2002

Inhibitory Mechanism of Bromocriptine on Catecholamine Release Evoked by Cholinergic Stimulation and Membrane Depolarization from the Rat Adrenal Medulla
Lim ,  Dong-Yoon ,  Lee 외 3명 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 2002.01 학술저널
Influence of Cytisine on Catecholamine Release in Isolated Perfused Rat Adrenal Glands
Lim ,  Dong-Yoon ,  Jang 외 3명 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 2002.01 학술저널
Influence of CCCP on Catecholamine Secretion from the Perfused Rat Adrenal Medulla
Lim ,  Dong-Yoon ,  Jo 외 3명 대한약학회 학술대회 2002.01 학술대회자료

2001

Influence of Cilnidipine on Catecholamine Release Evoked by Cholinergic Stimulation and Membrane Depolarization in the Perfused Rat Adrenal Gland
Lim ,  Dong-Yoon ,  Woo 외 3명 한국응용약물학회 추계학술발표논문집 2001.01 학술대회자료

2000

Influence of 5′-(N′-Ethylcarboxanlido) Adenosine on Catecholarnine Secretion Evoked by Cholinergic Stimulation and Membrane Depolarization in the Rat Adrenal Gland
Lim ,  Dong-Yoon ,  Oh 외 3명 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 2000.01 학술저널
Influence of Quinidine on Catecholamine Secretion Evoked by Cholinergic Stimulation and Membrane Depolarization from the Perfused Rat Adrenal Gland
Lim ,  Dong-Yoon ,  Jeon 외 11명 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 2000.01 학술저널

1992

Influence of TMB-8 on Secretion of Catecholamines from the Perfused Rat Adrenal Glands
Lim ,  Dong-Yoon ,  Kim 외 3명 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 1992.01 학술저널

1991

Studies on Secretion of Catecholamine Evoked by Caffeine from the Isolated Perfused Rat Adrenal Gland
Lim ,  Dong-Yoon ,  Lee 외 11명 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 1991.01 학술저널

초록· 키워드

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The purpose of this study was to determine whether bromocriptine affects the catecholamines (CA) secretion evoked in isolated perfused rat adrenal glands, by cholinergic stimulation, membrane depolarization and calcium mobilization, and to establish the mechanism of its action. The perfusion of bromocriptine ($1~10{\;}{\mu}M$) into an adrenal vein, for 60 min, produced relatively dose-dependent inhibition in the secretion of catecholamines (CA) evoked by acetylcholine (ACh, 5.32 mM), DMPP ($100{\;}{\mu}M$ for 2 min), McN-A-343 ($100{\;}{\mu}M$ for 2 min), cyclopiazonic acid (CPA, $10{\;}{\mu}M$ for 4 min) and Bay-K-8644 ($10{\;}{\mu}M$ for 4 min). High $K^+$ (56 mM)-evoked CA release was also inhibited, although not in a dose-dependent fashion. Also, in the presence of apomorphine ($100{\;}{\mu}M$), which is also known to be a selective $D_2$-agonist, the CA secretory responses evoked by ACh, high potassium, DMPP, McN-A-343, Bay-K-8644 and cyclopiazonic acid were also significantly depressed. However, in adrenal glands preloaded with bromocriptine ($3{\;}{\mu}M$) in the presence of metoclopramide ($15{\;}{\mu}M$), a selective $D_2$-antagonist, the CA secretory responses evoked by ACh, high potassium, DMPP, McN-A-343, Bay-K-8644 and cyclopiazonic acid considerably recovered as compared to that of bromocriptine only. Taken together, these results suggest that bromocriptine can inhibit the CA secretion evoked by stimulation of cholinergic receptors, as well as by membrane depolarization, in the perfused rat adrenal medulla. It is thought this inhibitory effect of bromocriptine may be mediated by inhibiting the influx of extracellular calcium and the release from intracellular calcium stores, through the activation of dopaminergic $D_2$-receptors located in the rat adrenomedullary chromaffin cells. Furthermore, these findings also suggest that the dopaminergic $D_2$-receptors may play an important role in regulating adrenomedullary CA secretion.
#Bromocriptine #Adrenal medulla #Catecholamine release #Dopaminergic $D_2-Recepto$

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