[Skeletal effect of xianzhen gubao on preventing prednisone-induced osteoporosis in male rats].
OBJECTIVE
To study the effect of Chinese medicine Xianzhengubao (XZGB) capsules of compound prescription on corticosteroid-induced osteoporosis in rats.


METHODS
3-month-old SD male rats were randomly divided into basal control and aging control, prednisone (4.5 mg.kg-1, ig, twice a week) and XZGB capsules were used in three different doses (0.2, 0.4, 0.8 g.kg-1.d-1 ig)6 times a week. All the rats were killed. On the 90th day afteradministration. The proximal tibiae were processed in undecalcified sections at a thickness of 4-10 microns for histomorphometric analysis.


RESULTS
Compared with the aging controls corticosteroid reduced markedly the trabecular bone mass due to increase of bone resorption and decrease of bone formation (%Tb. Ar 52.9%). Treatment with XZGB capsules in high doses increased significantly the trabecular area as compared with the hormone control(% Tb. Ar + 91.2%). The protective mechanism of XZGB capsules mainly consists in suppressing bone resorption and mildly increasing bone formation in rats.


CONCLUSIONS
Xianzhen gubao capsules have an effect on preventing bone loss in rats induced by corticosteroid, and higher doses produce greater effect.
Hu
B
B
Bone Biology Laboratory, Guangdong Medical College, Guangzhou 524023.
Li
Q
Q
Li
C
C
Wu
T
T
Huang
L
L
D000818:Animals; D002214:Capsules; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D008297:Male; D010012:Osteogenesis / Q000187:drug effects; D010024:Osteoporosis / Q000139:chemically induced / Q000517:prevention & control*; D008517:Phytotherapy; D011241:Prednisone; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D013977:Tibia / Q000503:physiopathology
D002214:Capsules; D004338:Drug Combinations; D004365:Drugs, Chinese Herbal; D011241:Prednisone