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2015 ; 8
(5
): 7306-14
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Icariin attenuates glucocorticoid-induced bone deteriorations, hypocalcemia and
hypercalciuria in mice
#MMPMID26221270
Zhang J
; Song J
; Shao J
Int J Clin Exp Med
2015[]; 8
(5
): 7306-14
PMID26221270
show ga
OBJECTIVE: This study was performed to investigate bone deteriorations and
calcium homeostasis of GIOP mice in response to the treatment of icariin.
METHODS: The biomarkers in serum and urine were measured, tibias were taken for
the measurement on bone calcium, gene expression, histomorphology and micro-CT.
RESULTS: Glucocorticoid-treated facilitated to induce hypocalcemia and
hypercalciuria in mice, and icariin-treated showed a greater increase in serum
calcium and decrease in urine calcium. Icariin reversed DXM-induced trabecular
deleterious effects and stimulated bone remodeling, including an increase in bone
calcium, OCN and FGF-23 and a decrease in a critical bone resorption markers CTX
and TRAP-5b. H&E staining and micro-CT showed the increased disconnections and
separation among growth plate and trabecular bone network as well as the
reduction of trabecular bone mass of primary and secondary spongiosa throughout
the proximal metaphysis of tibia in DXM group. Importantly, icariin reversed
DXM-induced trabecular deleterious effects and stimulated bone remodeling.
Moreover, the results showed that the mRNA expression of MMP-9 and CAII was
significantly increased in DXM group compared with control group. Icariin
treatment could suppress the expression of MMP-9 and CAII in the tibia of mice.
CONCLUSIONS: The present study demonstrated the protective effects of icariin
against bone deteriorations, hypocalcemia and hypercalciuria in experimentally
DIOP mice. Furthermore, these results provided further evidence to support the
dual role of icariin as a bone formation enhancer and bone resorption inhibitor.