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Objective To investigate the effect of basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF) on limb ischemia/reperfusion injury of rats and the mechanism Methods The hind limb ischemia/reperfusion injury of male SD rats was induced by tourniquet for 2 hours and then reperfusing for 12 hours with administration of different agents Animals were divided into control, bFGF 10 and bFGF 50, VEGF 10 and VEGF 50 group by infusing physiological saline, 10 and 50?μg/kg bFGE, 10 and 50?μg/kg VEGF, respectively Blood was collected to determine malonyldialdehyde (MDA), and the ischemic reperfused gastrocnemius muscle and the contralateral control one were harvested together for measurement of tissue viability, water content, myeloperoxidose (MPO) activity, ATP and MDA concentration Results Compared with control group, tissue viability of ischemia/reperfusion limb in bFGF 10 and bFGF 50 group increased by 16 0% ( P <0 05) and 32 8% ( P <0 01), ATP content increased by 14 8% and 35 6% ( P <0 01), and plasma MDA level decreased by 45 2% and 56 2% ( P <0 01) 10?μg/kg bFGF had no significant effect on tissue water content, MPO activity, MDA concentration of ischemia/reperfusion limb, while 50?μg/kg of bFGF lowered these values by 15 7%, 32 5% and 13 6% ( P <0 05) and 14 7% ( P <0 01), MPO activity augmented by 44 9% and 96 1% ( P <0 01), ATP content decreased by 13 1% ( P <0 05) and 33 3% ( P <0 01) Plasma and tissue MDA concentrations in VEGF 10 group had no significant changes ( P >0 05), while in VEGF 50 group, these values were elevated by 46 4% and 38 6% ( P <0 01) Conclusion bFGF attenuated, while VEGF exacerbated ischemia/reperfusion injury of rat limb significantly, the mechanism of which was probably related to preventing or enhancing lipid peroxide, and increasing or decreasing energy store
Objective To investigate the effect of basic fibroblast growth factor (bFGF) and vascular endothelial growth factor (VEGF) on limb ischemia / reperfusion injury of rats and the mechanism Methods The hind limb ischemia / reperfusion injury of male SD rats was induced by tourniquet for 2 hours and then reperfusing for 12 hours with administration of different agents Animals were divided into control, bFGF 10 and bFGF 50, VEGF 10 and VEGF 50 groups by infusing physiological saline, 10 and 50 μg / kg bFGE, 10 and 50 μg / kg VEGF, respectively Blood was collected to determine malonyldialdehyde (MDA), and the ischemic reperfused gastrocnemius muscle and the contralateral control one were harvested together for measurement of tissue viability, water content, myeloperoxidose (MPO) activity, ATP and MDA concentration Results Compared with control group, tissue viability of ischemia / reperfusion limb in bFGF 10 and bFGF 50 group increased by 16 0% (P <0 05) and 32 8% ( (P <0.01), ATP content increased by 14 8% and 35 6% (P <0.01), and plasma MDA level decreased by 45 2% and 56 2% no significant effect on tissue water content, MPO activity, MDA concentration of ischemia / reperfusion limbs, while 50 μg / kg of bFGF reduced these values by 15 7%, 32 5% and 13 6% (P <0.05) and 14 ATP content decreased by 13 1% (P <0 05) and 33 3% (P <0 01) with a significant increase in MPO activity augmented by 44 9% and 96 1% (P <0.01) Plasma and tissue MDA concentrations in VEGF 10 group had no significant changes (P> 0.05), while in VEGF 50 group, these values were elevated by 46 4% and 38 6% (P <0.01) Conclusion bFGF attenuated while VEGF exacerbated ischemia / reperfusion injury of rat limb significantly, the mechanism of which was probably related to preventing or enhancing lipid peroxide, and increasing or decreasing energy store