[Preventive and therapeutic effects of Yishen Huanji Decoction on kidney injury in rats induced by simulation of military overtraining].
OBJECTIVE
To observe the preventive and therapeutic effects of Yishen Huanji Decoction (YSHJD), a compound traditional Chinese herbal medicine, on military overtraining-induced kidney injury in a rat model.


METHODS
Thirty SD rats were randomly divided into normal control group, untreated group and YSHJD-treated group. The military overtraining-induced kidney injury in rats was established by forcing to run on the treadmill for 8 weeks. The rats in YSHJD-treated group were administered with YSHJD at the same time. The 24-hour urines were collected every weekend for detecting the contents of urinary sediment, 24-hour urine total protein, 24-hour urine albumin and activity of N-acetyl-beta-D-glucosaminidase (NAG). The blood and renal tissues were collected after 8-week training, and the levels of serum urea nitrogen (BUN) and creatinine (SCr) were detected. Angiotensin II (Ang II) was detected by radioimmunoassay and activity of Na(+), K(+)-ATPase in kidney was analyzed by chemical colorimetric method.


RESULTS
Compared with the normal control group, after 8-week training, the contents of 24-hour urine protein, activities of NAG in urine, and the levels of BUN and SCr in rats in the untreated group and YSHJD-treated group were obviously increased (P<0.05), and these parameters of the YSHJD-treated group were lower than those of the untreated group (P<0.05). The contents of Ang II in blood plasma and kidney of rats in the untreated group and YSHJD-treated group were higher than those of the normal control group (P<0.05), and had no statistical difference between the untreated group and YSHJD-treated group. Compared with the normal control group, the activity of Na(+), K(+)-ATPase in kidney of rats in the untreated group was obviously decreased (P<0.05), and had no statistical difference between the normal control group and YSHJD-treated group.


CONCLUSIONS
YSHJD can protect against military overtraining-induced kidney injury in rats by decreasing the contents of 24-hour urine protein, BUN and SCr, and the activity of NAG, and increasing the activity of Na(+), K(+)-ATPase.
Chen
Hong
H
Department of Nephrology, Navy General Hospital of People's Liberation Army, Beijing 100037, China. chenhongqjhl@sina.com
Yang
Jun
J
Zhou
Chun-hua
CH
D000419:Albuminuria / Q000652:urine; D000818:Animals; D001806:Blood Urea Nitrogen; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D007674:Kidney Diseases / Q000209:etiology / Q000473:pathology / Q000517:prevention & control*; D008297:Male; D008889:Military Personnel; D005082:Physical Exertion; D008517:Phytotherapy; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
D004365:Drugs, Chinese Herbal