Objective To understand the synergistic effect of zinc and vitamin C on the anti-oxidative ability of sport training mouse. Methods 30 mice were randomly divided into 5 groups, blank control, normal saline solution, zinc , vitamin C and zinc + vitamin C. After 3 weeks of treatment, the activity of superoxide dismutase (SOD) and the content of malondialdehyde (MDA) in the serum, liver and brain were determined. Results Compared with the control, the activity of SOD in the serum, liver and brain of the mice treated with zinc and vitamin C significantly increased, the content of MDA showed a significant decrease, the combination of zinc and vitamin C presented the best effect. Conclusion Combination of zinc and vitamin C has a significant synergistic effect in improvement of anti-oxidative ability.

Objective: To explore the efficacy of percutaneous vertebroplasty (PVP) in the treatment of osteoporotic vertebral compression fractures (OVCF). Methods: A retrospective analysis of 76 patients with OVCF treated with single and double pedicle approach PVP from April 2016 to June 2017 in the First Affiliated Hospital of He′nan University was conducted.According to the operation method, the patients were divided into unilateral group (42 patients, unilateral pedicle approach), and bilateral group (34 cases, bilateral pedicle approach). The operation time, number of intraoperative X-rays, amount of bone cement injection, height of the vertebral body and the complications were compared between the two groups.The visual analogue scale (VAS) and the Oswestry dysfunction index(ODI) score were used to assess the recovery of the patients. Results: The unilateral group had less operative time[(33.01±3.78)min], intraoperative X-ray number[(22.06±3.85) times]and bone cement injection[(3.53±0.42) mL] compared with the bilateral group (t=8.54, 5.98, 4.74, all P<0.05). There were no statistically significant differences in the recovery of vertebral height and complications between the two groups (all P>0.05). The postoperative VAS and ODI of the two groups were significantly improved compared with those before operation (all P<0.05). Conclusion In the case of reasonable indications, the unilateral approach PVP is better than bilateral, and unilateral approach PVP should be the first choice for OVCF.