Effects of Temperature Changes on the Contractility of Isolated Small Intestinal Smooth Muscle in Rabbits |
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| Authors: | KALIBIXATI&# Aimulajiang ZHOU Yu-dong YAN Shu-ping HALIDAN&# Ahemaiti ZHAO Hong-qiong |
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| Institution: | 1. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China;
2. Animal Husbandry and Veterinary Station, Xinjiang Production and Construction Corps Seventh Division of Animal Husbandry Bureau, Kuitun 833200, China |
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| 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. |
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| Keywords: | rabbit small intestine smooth muscle temperature contraction frequency contraction amplitude contraction tension |
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