Herbal Formula Science (대한한의학방제학회지)

The Korean Medicine Society for the Herbal Formula Study (대한한의학방제학회)
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Effects of Alisma canaliculatum Extract in Pacemaker Potential of Intestinal Interstitial cells of Cajal in mice

생쥐 소장 및 대장 카할세포의 자발적 탈분극에서 택사의 효과에 관한 비교연구

  • Kwon, Hyo Eun (Division of Longevity and Biofunctional Medicine School of Korean Medicine, Pusan National University) ;
  • Park, Dong Suk (Division of Longevity and Biofunctional Medicine School of Korean Medicine, Pusan National University) ;
  • Kim, Jeong Nam (Division of Longevity and Biofunctional Medicine School of Korean Medicine, Pusan National University) ;
  • Kim, Byung Joo (Division of Longevity and Biofunctional Medicine School of Korean Medicine, Pusan National University)
  • 권효은 (부산대학교 한의학전문대학원 양생기능의학교실) ;
  • 박동석 (부산대학교 한의학전문대학원 양생기능의학교실) ;
  • 김정남 (부산대학교 한의학전문대학원 양생기능의학교실) ;
  • 김병주 (부산대학교 한의학전문대학원 양생기능의학교실)
  • Received : 2022.03.02
  • Accepted : 2022.05.11
  • Published : 2022.05.31
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Abstract

Objectives : The purpose of this study was to examine the effects of Alisma canaliculatum Extract (ACE) on pacemaker potentials of small and large intestinal interstitial Cells of Cajal (ICC) in mice. Methods : We used enzymatic digestions to dissociate the ICC in the small and large intestine in mice. The whole-cell patch-clamp method was used to record pacemaker potentials in ICC. Results : 1. The ICC generated the pacemaker potentials in small intestine in mice. ACE (0.1-1mg/ml) induced membrane depolarization and decreased frequency with concentration-dependent manners. 2. Pretreatment with a Ca2+ free solution, Na+ 5 mM solution or 2-APB, a nonselective cation channel blocker, stopped the small intestinal ICC pacemaker potentials. In the case of Ca2+-free solution, Na+ 5 mM solution or 2-APB, ACE had no effects on the membrane depolarizations in small intestinal ICC. 3. The ICC generated the pacemaker potentials in large intestine in mice. Membrane depolarization appears regularly in the small intestine, but irregularly in the large intestine. ACE induced membrane depolarization (0.1-1mg/ml) and increased frequency (0.1-0.5mg/ml). 4. Pretreatment with a Ca2+ free solution, Na+ 5 mM solution or 2-APB, stopped the large intestinal ICC pacemaker potentials. In the case of Ca2+-free solution, Na+ 5 mM solution or 2-APB, ACE depolarized the membrane depolarizations in large intestinal ICC. 5. In mice, intestinal transit rate (ITR) values were dose-dependently decreased by the intragastric administration of ACE. Conclusions : These results suggest that ACE can regulate the pacemaker activity of ICC and the reaction by ACE is different from the small and large intestinal ICC, and the control of the intestinal motion by ACE may be caused by many complex processes.

Keywords

Acknowledgement

이 논문은 부산대학교 기본연구지원사업 (2년)에 의하여 연구되었다.

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