Exercise enhance the ectopic bone formation of calcium phosphate biomaterials in muscles of mice

Materials Science & Engineering. C, Materials for Biological Applications
L ChengZheng Shi

Abstract

To investigate whether exercise can enhance ectopic bone formation of calcium phosphate (Ca-P) biomaterials in muscles of mice. Firstly, ten transient receptor potential vanilloid subfamily member 1 (TRPV1) knockout mice (group KO) and ten C57BL/6 mice (group WT) were randomly chosen, 10μg Ca-P biomaterials were implanted into the thigh muscle pouch of each mouse which was far away from femur; after that, all animals were kept in open field for free exploration 5min, and the movement time and distance were automatically analyzed. Ten weeks later, the Ca-P samples were harvested for histological staining and immunochemistry. Secondly, the Ca-P biomaterials were implanted into the thigh muscle pouch of C57BL/6 mice the same as previous operation, and then randomly divided into two groups: running group and non-running group (n=10); in running group, all mice run 1h as a speed of 6m/h in a treadmill for 10weeks. Ten weeks later, the blood was collected to detect the interleukin-4 (IL-4) and IL-12 levels by enzyme linked immunosorbent assay (ELISA), and the samples were harvested for histological staining. In groups KO and WT, both the movement time and distance were significant higher in group KO than that in group WT (P<0.05); fu...Continue Reading

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