摘要
Objective: To investigate the effects of magnesium sulfate on traumatic brain edema and explore its possible mechanism. Methods: Forty-eight Sprague-Dawley (SD) rats were randomly divided into three groups: Control, Trauma and Treatment groups. In Treatment group, magnesium sulfate was intraperitoneally administered immediately after the induction of brain trauma. At 24 h after trauma, total tissue water content and Na +, K +, Ca 2+, Mg 2+ contents were measured. Permeability of blood-brain barrier (BBB) was assessed quantitatively by Evans Blue (EB) dye technique. The pathological changes were also studied. Results: Water, Na +, Ca 2+ and EB contents in Treatment group were significantly lower than those in Trauma group (P< 0.05). Results of light microscopy and electron microscopy confirmed that magnesium sulfate can attenuate traumatic brain injury and relieve BBB injury. Conclusions: Treatment with MgSO 4 in the early stage can attenuate traumatic brain edema and prevent BBB injury.
基金
SupportedbytheScienceFoundationofShanghaiSecondMedicalUniversity (98 11)
