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Space Medicine & Medical Engineering ; (6)2006.
Artigo em Chinês | WPRIM | ID: wpr-577988

RESUMO

Objective To observe the effect of digestive load from senna on the adaptive thermogenesis in hypothyroid rats.Methods After being born(d1),rats were given the intraperitoneal injection with a series ratio of 131Ⅰ at neutral temperature 28℃ and a graded developmental hypothyrosis was resulted in.Since d56,they were fed with higher lipid 24 h then fasted 24 h interval to make them sensitive to digestive load.Since d70,senno sides were given intragastrical administration for 14 d to resulted in the digestive load with its empting function of the bowels.Pre-(d67-69)and post-(d85-86)administration of senna under the neutral environmental temperature,all changes of rat temperature,included peaks(℃)and areas under curve(℃?h),were measured and recorded with physiography,during 180 min after being injected with 106 ?g?kg-1 isoprenaline intravenously.The correlation between the effect and the logarithmic dose of 131Ⅰ(nCi?g-1)was analyzed.As well as EC50,the decreased thermogenesis induced by 131Ⅰ,was calculated with peaks and areas under curve respectively.The correlative analysis between the digestive load and the adaptive thermogenesis was performed especially with senna.Results Before and after administrated senna,it was negative correlation between rat temperature change(peaks and areas under curve)induced with isoprenaline and the degree of hypothyrodism(P

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