温度变化对家兔离体小肠平滑肌运动的影响

doi:10.16431/j.cnki.1671-7236.2016.08.019

Abstract

Abstract:

In order to explore the influence of temperature changes on animal digestive tract smooth muscle,the contractility of isolated rabbit small intestine (duodenum,jejunum and ileum) were measured at different temperatures (39→32℃,32→39℃,39→42℃ and 42→39℃) using the biological signal processing system.The results showed that the contraction frequency of duodenum and jejunum was positively correlated with temperature changes between 39 and 32℃,while the amplitude and tension of duodenum were negatively correlated with temperature changes.Only the contraction frequency of ileum was positively correlated with temperature changes between 39 and 32℃.Changes of frequency,amplitude and tension of duodenum between 39 and 42℃ were similar with those changes between 39 and 32℃.However,the contraction of jejunum and ileum was irregular.When the temperature was decreased from 42 to 39℃,the contraction of small intestine could not return to the condition in 39℃.The results suggested that the optimal bath temperature was 37℃ in contraction test of rabbit small intestine in vitro,and the present results could be referenced to explore the disorder of gastrointestinal movement due to the change of environment temperature in animals.

Key words: rabbit; small intestine; smooth muscle; temperature; contraction frequency; contraction amplitude; contraction tension

CLC Number:

S829.1

KALIBIXATI·Aimulajiang, ZHOU Yu-dong, YAN Shu-ping, HALIDAN·Ahemaiti, ZHAO Hong-qiong. Effects of Temperature Changes on the Contractility of Isolated Small Intestinal Smooth Muscle in Rabbits[J]. , 2016, 43(8): 2060-2065.

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Effects of Temperature Changes on the Contractility of Isolated Small Intestinal Smooth Muscle in Rabbits

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