Effect of BBC-containing serum on the activity and apoptosis of osteoclasts in osteoblasts and osteoclasts co-culture system / 中国病理生理杂志

ABSTRACT

AIM: To study the effect of Bone-benefiting capsule(BBC)-containing serum on activity and apoptosis of osteoclasts(OC) in osteoblasts(OB) and osteoclasts co-culture system.METHODS:(1) OB were separated from the skull of SD rats aged 1 d and OC from the thighbone and shinbone of SD rats aged 5 d,the plane OB and OC co-culture system was established,in which the cells in each culture system did not intermix,but the culture medium communicated,and BBC-containing serum group and control group were concluded in the experiment.(2) Female SD rats aged 10 months were divided into BBC group and control group to prepare BBC-containing serum and control serum.(3) The TRAP secreted by OC was measured by the diazol method and the absorption of lacuna formed by OC was observed by microscope in OB and OC co-culture system to determine the activity of OC with the effect of BBC-containing serum.(4) The effect of BBC-containing serum on OC apoptosis in OB and OC co-culture system was examined by optical microscopes and fluorescence microscopes.RESULTS: In OB and OC co-culture system,the activity of TRAP secreted by OC of BBC-containing serum group were obviously lower than that of control group in 48 h,72 h and 96 h,the OC surviving numbers were obviously lower than that of control group and the rate of OC apoptosis was markedly higher than that of control group which showed an obvious time-efficiency relationship;the amount of the absorption of lacuna formed by OC in BBC-containing serum group was evidently lower than that of control group(P