Objectives:To compare the effect of glial cell line derived neurotrophic factor(GDNF) and methylprednisolone(MP) on intracellular free calcium([Ca 2+ ]i) and capacity of containing water(CCW) after spinal cord injury(SCI).

• 目的 :比较胶质细胞源性神经营养因子 (GDNF)与甲泼尼龙 (MP)对脊髓损伤组织细胞内游离钙及水含量的影响。