中文摘要：

目的：探索低频电刺激对中国树嗣血激素水平的影响。方法：给予中国树购低频电刺激或肌内注射利血平后再给予低频电刺激，用放射免疫法检测血清中去甲肾上腺素（NE）、内皮素（ET）、血栓素B：（TXB：）和睾酮（T）水平。结果：放射免疫法检测发现，给予中国树嗣低频电刺激后1h、24h、72h和7d，血清中T水平：电刺激组中24h比1h、72h和7d分别升高了12．49％、7．27％和15．79％，电刺激组比对照组显著升高（P〈0．01）；利血平组中24h、72h和7d比1h分别降低了5．42％、11．80％和18．07％，利血平组比对照组明显降低（P〈0．05或P〈0．01）。血清TXB：水平：电刺激组和利血平组比对照组显著升高（P〈0．01），电刺激组间、利血平组间在1h、24h、72h和7d差异无统计学意义（P〉0．05）。血清ET水平：电刺激组中24h比1h、72h和7d分别升高了9．12％、11．41％和10．85％，电刺激组比对照组显著升高（P〈0．01）；利血平组比对照组明显升高（P〈0．05），利血平组中1h、24h、72h和7d差异无统计学意义（P〉0．05）。血清NE水平：电刺激组中1h比24h、72h和7d分别升高了10．65％、5．83％和19．29％，电刺激组比对照组显著升高（P〈0．01）；利血平组中24h、72h和7d比1h时分别降低了32．85％、43．38％和52．26％，利血平组比对照组明显降低（P〈0．05）。结论：低频电刺激能促进中国树胸血清NE、El＇、TXB：和T释放。利血平可降低低频电刺激对机体的应激作用。

英文摘要：

AIM： To study the low-frequency electric stimulation on the serum hormone levels in Chinese tree shrews. METHODS： Chinese tree shrews were given low-frequency electric stimulation, or intramuscularly injected with reserpine and then given low-frequency electric stimulation. The serum levels of norepinephrine （NE）, endothelin （ET）, thromboxane B2 （TXB2 ） and testosterone （T） were detected by radioimmunoassay. RESULTS： In electric stimulation group, the serum levels of NE, ET, TXB2 and T were significantly increased as compared with control group. After low-fre- quency electric stimulation, the serum level of T at 24 h was higher than those at 1 h, 72 h and 7 d by 12.49%, 7.27% and 15.79%, respectively. Reserpine treatment significantly reduced the T level as compared with control group, and the T level at 24 h, 72 h and 7 d after treated with reserpine was lower than that at 1st h by 5.42%, 11.80% and 5.42%, re- spectively. The levels of TXB~ in electric stimulation group and reserpine group were significantly higher than that in control group, and no difference in electric stimulation groups or in reserpine groups between 1 h, 24 h, 72 h and 7 d after electric stimulation was observed. The level of ET in electric stimulation group at 24 h after electric stimulation was higher than those at 1 h, 72 h and 7 d by 9.12%, 11.41% and 10.85%, respectively. The level of ET in reserpine group was signifi- candy higher than that in control group. However, no difference of the ET level in reserpine groups between 1 h, 24 h, 72 h and 7 d was observed. The level of NE after electric stimulation at 1 h was higher than those at 24 h, 72 h and 7 d by 10.65%, 5.83% and 19.29%, respectively. The levels of NE in reserpine groups at 24 h, 72 h and 7 d after electric stimulation were lower than that at 1st h by 32.85%, 43.38% and 32.85%, respectively. Compared with control group, the level of NE in reserpine group was significantly decreased. CONCLUSION： Low-frequency electric stimulation pro-motes the release