Resistance of osteosclerotin knockout mice to glucocorticoid induced bone microstructure degeneration / 中国医师杂志

ABSTRACT

Objective To observe the changes in bone mineral density and microstructure parameters in sclerostin (SOST) gene knockout mice treated with glucocorticoid.Methods 12 4-week-old SOST knockout mice were randomly divided into two groups (n =6)methylprednisolone intervention group [SOM group,methylprednisolone 3 mg/(kg· d),subcutaneous injection],placebo group (SOS group,isovolumetric saline subcutaneous injection).12 wild-type mice were randomly divided into two groups (n =6)wild-type placebo group (WTS group,isovolumetric saline subcutaneous injection),wild methylprednisolone intervention group [WTM group,methylprednisolone 3 mg/(kg · d),subcutaneous injection].12 weeks later,mice were sacrificed and one lumbar vertebra of each mouse was selected for microCT analysis.Results There was no difference in bone mineral density (BMD),trabecular volume fraction,trabecular number and trabecular thickness between SOM and SOS groups (P ＞ 0.05).BMD,trabecular volume fraction,trabecular number and trabecular thickness in SOM and SOS groups were significantly higher than those in WTS and WTM groups (P ＜0.05).BMD,trabecular volume fraction,trabecular number and trabecular thickness in WTM group were significantly lower than those in WTS group (P ＜ 0.05).Conclusions Sclerotin gene knockout mice can resist glucocorticoid-induced bone loss and bone microarchitectural deterioeration.The treatment of osteoporosis with SOST/sclerotin as a target will be an effective method in the future.