(1.Department of Physical Education,Xiangnan College,Chenzhou 423000,China;2.Department of Physical Education,Changsha Institute of Vocational and Technical Aviation,Changsha 400124,China;3.School of Physical Education,Hunan Normal University,Changsha 410012,China) Abstract: In order to gain an insight into the effects of lysine with different concentrations on the apoptosis of car-diac and hepatic histiocytes of rats doing an exhaustive exercise, to observe the change which lysine causes to Bax and Bcl-2 (genes that regulate the apoptosis of cardiac and hepatic histiocytes), and to probe into the function of ly-sine in protecting the body of rats doing an exhaustive exercise, the authors divided 32 rats randomly into 4 groups (calm control group, exercise group, low concentration lysine supplied group and high concentration lysine supplied group) for 3 days of adaptation training on a running track, adopted the exercise load model established by Bedford for rats doing an exhaustive exercise, used an immunohistochemical method to test the average optical density, area and content of the positive substance of Bax and Bcl-2 when the experiment was finished, and revealed the follow-ing findings: there is a significant difference (P<0.05) in optical density of Bax between the exercise group/lysine supplied groups and the control group, and also between the lysine supplied groups and the exercise group; no sig-nificant difference was produced by the function of lysine with different concentrations, whose function is pretty much the same; there is a significant difference (P<0.05) in optical density of Bcl-2 between the exercise group and the control group, and also between the lysine supplied groups and the exercise group, and there is a significant dif-ference in hepatic cell expression between the high concentration lysine supplied group and the low concentration lysine supplied group. From the said findings the authors drew the following conclusions: a high intensity acute ex-haustive exercise can cause the damage of cardiac and hepatic tissue of rats, and induce the apoptosis of hepatic cells; L-lysine has the function of protecting cardiac and hepatic tissue of rats doing an exhaustive exercise. Key words: high intensity acute exhaustive exercise;L-lysine;cell apoptosis regulating gene;immunohistochemistry |