ArticleJournal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi2014
Effect of colonic distension on gastric adaptive relaxation in rats: barostatic evaluation using an orally introduced gastric balloon.
Article in Journal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
While the gastrocolonic reflex has been known, the cologastric relationship has not been clarified especially with regard to gastric adaptive relaxation. Therefore, in this study we have examined the correlation between gastric adaptive relaxation and colonic distension. Male Sprague-Dawley rats were used after fasting for 18 hrs. Colonic distension was performed by injecting 2.2 ml of air into a colonic balloon inserted into the colon for 5 min in conscious state. After urethane anesthesia, gastric adaptive relaxation was investigated by using a slightly modified gastric balloon introduced into the stomach through the mouth. Gastric balloon volumes increased gradually just after an increment in the gastric balloon pressure (1 to 8 mmHg), and reached a plateau within 1 min. This increased volume was defined as gastric adaptive relaxation. In control rats, gastric adaptive relaxation increased with pressure increments in a pressure dependent manner. In the colon-distended rats, gastric adaptive relaxation increased also in a pressure dependent manner, but was significantly inhibited as compared with control at 8 mmHg (P<0.05). These findings show that colonic distension inhibits the gastric adaptive relaxation and suggests the existence of a cologastric relationship in rats.
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