• 1. Department of Vascular Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100730, China;
  • 2. National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100730, China;
LIYong-jun, Email: yongj_93@hotmail.com
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Objective To evaluate the effects of nerve growth factor (NGF) on angiogenesis and skeletal muscle fiber remodeling in ischemic hindlimbs, and study the relationship of NGF and vascular endothelial growth factor (VEGF) to angiogenesis. Methods Eighteen mice were randomly allocated to normal control group (n=6), blank control group (n=6), and NGF gene transfection group (n=6). The left hindlimb ischemia model was established by ligating the femoral artery. NGF plasmid (125μg) was injected into the mouse ischemic gastrocnemius in the NGF gene transfection group. The same volume of normal saline (200μL) was injected into the mouse ischemic gastrocnemius in the blank control group. The gastrocnemius of left hindlimb was harvested under the condition of peritoneal cavity anesthesia on the 21th day after operation, and then the mice were sacrificed. The gastrocnemius of three groups were tested by hematoxylin-eosin staining, proliferating cell nuclear antigen (PCNA) and CD34 were determined by immunohistochemistry staining. Skeletal muscle fiber type was tested by myosin ATPase staining. NGF and VEGF protein expression were detected by enzyme linked immunosorbent assay. Results On the 21th day after surgery, compared with the blank control group, the skeletal muscle atrophy degree was weaker, the functional assessment score was significantly lower (P < 0.05), the endothelial cell proliferation index, capillary density, the typeⅠskeletal muscle fiber proportion, NGF and VEGF expression were significantly higher (P < 0.05) in the NGF gene transfection group. Conclusions NGF gene transfection could promote NGF and VEGF expression and angiogenesis in ischemic hindlimbs, and induce typeⅠskeletal muscle fibers formation in ischemic hindlimbs. The molecular regulation mechanism still needs to be further studied.

Citation: DIAOYong-peng, GUOLi-long, LIANLi-shan, YANSheng, CHENHou-zao, LIYong-jun. Nerve Growth Factor Promotes Angiogenesis and Skeletal Muscle Fiber Remodeling in A Mouse Hindlimb Ischemic Model. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2015, 22(2): 166-170. doi: 10.7507/1007-9424.20150045 Copy

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