Acute spinal cord injury initiates a complex cascade of molecular events termed ＇secondary injury＇, which leads to progressive degeneration ranging from early neuronal apoptosis at the lesion site to delayed degener...Acute spinal cord injury initiates a complex cascade of molecular events termed ＇secondary injury＇, which leads to progressive degeneration ranging from early neuronal apoptosis at the lesion site to delayed degeneration of intact white matter tracts, and, ultimately, expansion of the initial injury. These secondary injury processes include, but are not limited to, inflammation, free radical-induced cell death glutamate excitotoxicity, phospholipase A2 activation, and induction of extrinsic and intrinsic apoptotic pathways, which are important targets in developing neuroprotective strategies for treatment of spinal cord injury. Recently, a number of studies have shown promising results on neuroprotection and recovery of function in rodent models of spinal cord injury using treatments that target secondary injury processes including inflammation, phospholipase A2 activation, and manipulation of the PTEN-AktJmTOR signaling pathway. The present review outlines our ongoing research on the molecular mechanisms of neuroprotection in experimental spinal cord injury and briefly summarizes our earlier findings on the therapeutic potential of pharmacological treatments in spinal cord injury.展开更多
The Crystals of acidic phospholipase A2 from the venom of Agkistrodon blomhoffii bre-vicaudus (i.e. Agkistrodon halys pallas) covalently modified with p-bromo-phenacylbromide wereobtained by the method of hanging drop...The Crystals of acidic phospholipase A2 from the venom of Agkistrodon blomhoffii bre-vicaudus (i.e. Agkistrodon halys pallas) covalently modified with p-bromo-phenacylbromide wereobtained by the method of hanging drop vapor diffusion. Crystallization droplet was composedof 0.06mol’L-1 Na(CH3)2AsO2 (pH=6.5), 24.8% (v/v) 1,4-butanediol, and 4.5mg.mL-1 protein.The crystal data are ot a=b=82.82A., c=32.85A, space group P61. 8945 unique reflections with1.93A resolution were ineasured on a Siemens area detector X-ray diffractometor, of which 8069reflections haring F0 >2σ(F). The experimental results show that the crystals are suitable to astructure analysis of high resolution.展开更多
基金supported by National Institutes of Health(NIH/NINDS NS059622, NS052290, NS050243,NS073636)the Mari Hulman George Endowment Funds(XMX)the Indiana Spinal Cord and Brain Injury Research Funds(ISDH,Grant #A70-2-079609 and A70-9-079138)(NKL&XMX)
文摘Acute spinal cord injury initiates a complex cascade of molecular events termed ＇secondary injury＇, which leads to progressive degeneration ranging from early neuronal apoptosis at the lesion site to delayed degeneration of intact white matter tracts, and, ultimately, expansion of the initial injury. These secondary injury processes include, but are not limited to, inflammation, free radical-induced cell death glutamate excitotoxicity, phospholipase A2 activation, and induction of extrinsic and intrinsic apoptotic pathways, which are important targets in developing neuroprotective strategies for treatment of spinal cord injury. Recently, a number of studies have shown promising results on neuroprotection and recovery of function in rodent models of spinal cord injury using treatments that target secondary injury processes including inflammation, phospholipase A2 activation, and manipulation of the PTEN-AktJmTOR signaling pathway. The present review outlines our ongoing research on the molecular mechanisms of neuroprotection in experimental spinal cord injury and briefly summarizes our earlier findings on the therapeutic potential of pharmacological treatments in spinal cord injury.
文摘The Crystals of acidic phospholipase A2 from the venom of Agkistrodon blomhoffii bre-vicaudus (i.e. Agkistrodon halys pallas) covalently modified with p-bromo-phenacylbromide wereobtained by the method of hanging drop vapor diffusion. Crystallization droplet was composedof 0.06mol’L-1 Na(CH3)2AsO2 (pH=6.5), 24.8% (v/v) 1,4-butanediol, and 4.5mg.mL-1 protein.The crystal data are ot a=b=82.82A., c=32.85A, space group P61. 8945 unique reflections with1.93A resolution were ineasured on a Siemens area detector X-ray diffractometor, of which 8069reflections haring F0 >2σ(F). The experimental results show that the crystals are suitable to astructure analysis of high resolution.
