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흰쥐 이자에서 Secretin-CCK 상승작용 기전에 관한 연구

Other Titles
 Mechanism of the Potentiating Effect of Secretin-CCK on Rat Pancreas 
 이동기  ;  김준명  ;  권상옥  ;  박경선  ;  정재복  ;  강진경  ;  김경환 
 Korean Journal of Gastroenterology (대한소화기학회지), Vol.29(3) : 380-393, 1997 
Journal Title
 Korean Journal of Gastroenterology (대한소화기학회지) 
Issue Date
Background/Aims: The rnechanism of secretin and CCK potentiation effect was evaluated in the dispersed pancreatic acini of rat. Methods: To observe the presence of potentiating effect of secretin and insulin on CCK, the amount of amylase release according to secretagogues were measured. The mechanism of the potentiating effect of secretagogues were studied by measuring the change of the intracellular amount of cAMP and IP, and concentration of intracellular Ca". Results: In the dispersed pancreatic acini, secretin potentiates the amylase release stimulated by JO and 10'"M CCK-8. Insulin slightly increased the secretory response to secretin plus CCK-8, but with no statistical significance. Secretin or forskolin did not increase the intracellular Ipy accumulation stimulated by CCK-8. Alo insulin had no influence on the intraeellular IP accumulation stimulated by CCK-8 plus secretin. CCK-8 and A23187 significantly decreased the intracellular cAMP accumulation stimulated by secretin. But the insulin did not influence the intracellular cAMP accumulation stimulated by secretin plus CCK-8. Secretin alone did not increase the intracellular concentration of Ca . Secretin and dibutyryl cAMP significantly increa- sed the intracellular concentration of Ca" stimulated by CCK-8. Conclusions: These results verify the presence of the potentiating effect of secretin but not insulin on CCK. Also the poten- tiating effect of amylase secretion by the simultaneous activation of the secretin and CCK was shown to be associated with increased intracellular Ca concentration, without a further elevation of intracellular IP or cAMP accumulation. (Korean J Gastroenterol 1997;29:380 - 393)
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1. College of Medicine (의과대학) > Dept. of Pharmacology (약리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Hwan(김경환)
Chung, Jae Bock(정재복)
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