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The objective of this study was to investigate the impact of femoral head perfusion by traditional Chinese medicine Guanxinning injection promoting blood circulation for removing blood stasis on the expression of Bcl-2 and Bax induced by liquid nitrogen freezing-mediated femoral head necrosis. 90 rabbits were randomized into three groups. Normal control group was not subjected to any medication. Saline and Guanxinning group were perfused with 0.9% saline and Guanxinning injection once every three days through the hip joint, respectively. Six animals in each group were sacrificed at weeks 1, 3, 6, 9, and 12. PCR and Western blot measured the expressions of Bcl-2 and Bax in the femoral head. The bax expression in the Guanxinning group reduced at the third week significantly compared to the normal control group ( P  < 0.01). The Bcl-2 expression in the Guanxinning group increased substantially at the third week ( P  < 0.05 or  P  < 0.01). Prolonged treatment elevated the expression of Bcl-2 in the Guanxinning group while that of Bax reduced remarkably ( P  < 0.01). Moreover, the ratio of Bcl-2 to Bax increased gradually in the Guanxinning group with prolonged drug administration. Guanxinning injection can inhibit the cell apoptosis of femoral head necrosis through the treatment by femoral head perfusion.

Study of Guanxinning Injection on Regulatory Mechanism of Bcl-2 and Bax by Liquid Nitrogen Freezing-Mediated Femoral Head Necrosis