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논문 기본 정보

자료유형
학술저널
저자정보
Sung, Dae-Suk (College of Life Science and Natural Resources, Sungkyunkwan University) Seo, Dong-Wan (College of Life Science and Natural Resources, Sungkyunkwan University) Choi, Don-Woong (College of Life Science and Natural Resources, Sungkyunkwan University) Ahn, Seong-Hoon (College of Life Science and Natural Resources, Sungkyunkwan University) Hong, Sung-Youl (College of Life Science and Natural Resources, Sungkyunkwan University) Lee, Hoi-Young (Department of Medicine, Konyang University) Han, Jeung-Whan (Department of Medicine, Konyang University) Lee, Hyang-Woo (Department of Medicine, Konyang University)
저널정보
한국응용약물학회 The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology The journal of applied pharmacology : the official journal of the Korean Society of Applied Pharmacology 제7권 제2호
발행연도
1999.1
수록면
105 - 111 (7page)

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Nitric oxide (NO), a cellular messenger synthesized from L-arginine by NO synthase (NOS, EC.1.14.13.39), is considered to be a regulator of gastric secretion. In the present study, the role of NO in the regulation of exocrine secretion was investigated in rat gastric chief cells. Treatment of chief cells with carba-chol resulted in an increase in the arginine conversion to citrulline, the amount of $NO_{x}$, the release of pepsine-gen, and the level of cGMP Especially, carbachol-stimulated increase of arginine to citrulline transformation, the amount of $NO_{x}$, cGMP level and the release of pepsinogen were partially reduced by the natural NOS inhibitor, $N^{G}$-monomethyl-L-arginine (MMA) and $N^{G}$, $N^{G}$-dimethyl-L-arginine (DMA). Furthermore, MMA- and DMA-induced decrease of pepsinogen secretion showed dose-dependent patters. Activation of NOS is one of the early events in receptor-mediated cascade of reactions in gastric chief cells and NO, not completely, but partially mediates gastric secretion. Agonist-stimulated pepsinogen secretion in chief cells has been considered to be mediated in adenosine 3',5'-cyclic monophosphate pathway and/or guanosine 3', 5'-cyclic monophosphate (cGMP) pathway. Taken together, the above results suggest that partial decrease of exocrine secretion following treatment of NOS inhibitor may result from the inactivation of NOS and subsequent guano- late cyclase, and NO/cGMP pathway may play a pivotal role in exocrine secretion.

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