21-Aminosteroid reduces ion shifts and edema in the rat middle cerebral artery occlusion model of regional ischemia.

21-Aminosteroid reduces ion shifts and edema in the rat middle cerebral artery occlusion model of regional ischemia.
复制标题

21-氨基类固醇可减少大鼠大脑中动脉局部缺血模型中的离子迁移和水肿。

DOI:
10.1161/01.str.19.8.1013
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发表时间:
1988
期刊:
影响因子:
8.3
通讯作者:
DeCrescito,V
DeCrescito,V
中科院分区:
医学1区
文献类型:
--
作者:
Young,W;Wojak,JC;DeCrescito,V

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U 74006 F是一个新的类固醇药物家族的成员,称为21-氨基类固醇,这是一种有效的脂质过氧化抑制剂,很少或没有糖皮质激素或盐皮质激素活性。我们研究了U 74006 F对大鼠大脑中动脉闭塞引起的早期离子性水肿的影响。在闭塞后10分钟和3小时静脉给予3 mg/kg U 74006 F。闭塞后24小时,通过原子吸收光谱法和湿干重测量法测量梗死部位及其周围的Na+、K+和水的组织浓度。与媒介物处理相比,U 74006 F处理在额叶和顶叶皮质中取样的大多数脑区域中使脑水进入、Na+积累、K+损失和净离子迁移减少25-50%。然而,离子性水肿的减少最为显著,并主要在梗死部位附近的额顶叶和顶叶皮质区域达到显著性(p <0.005,非配对双尾t检验)。我们的研究结果表明,没有糖皮质激素或盐皮质激素活性的类固醇药物可以减少脑缺血的水肿,但其作用主要限于可能存在侧支血流的组织。
U74006F is a member of a new family of steroid drugs called 21-aminosteroids, which are potent inhibitors of lipid peroxidation with little or no glucocorticoid or mineralocorticoid activity. We investigated the effects of U74006F on the early ionic edema produced by middle cerebral artery occlusion in rats. Intravenous doses of 3 mg/kg U74006F were given 10 minutes and 3 hours after occlusion. Tissue concentrations of Na+, K+, and water at and around the infarct site were measured by atomic absorption spectroscopy and by wet-dry weight measurements 24 hours after occlusion. Compared with vehicle treatment, U74006F treatment reduced brain water entry, Na+ accumulation, K+ loss, and net ion shift by 25-50% in most brain areas sampled in the frontal and parietal cortex. However, reductions of ionic edema were most prominent and reached significance (p less than 0.005, unpaired two-tailed t test) mostly in the frontoparietal and parietal cortex areas adjacent to the infarct site. Our findings suggest that a steroid drug without glucocorticoid or mineralocorticoid activity can reduce edema in cerebral ischemia but that the effects are largely limited to tissues in which collateral blood flow may be present.
局部脑缺血中组织 Na、K 和 Ca 的变化:测量和解释。
DOI: 10.1089/cns.1986.3.215
发表时间: 1986
期刊: Central nervous system trauma : journal of the American Paralysis Association
影响因子: --
作者:
Young,W;DeCrescito,V;Flamm,ES;Hadani,M;Rappaport,H;Cornu,P
通讯作者: Cornu,P
DOI: --
发表时间: 1981
期刊: Brain Research
影响因子: 2.9
作者:
J. Braughler;E. Hall
通讯作者: E. Hall
脂质过氧化在创伤后脊髓变性中的作用:综述。
DOI: --
发表时间: 1986
期刊: Central Nervous System Trauma
影响因子: --
作者:
E. Hall;J. Braughler
通讯作者: J. Braughler
主要中枢神经系统疾病中的自由基病理学和微循环。
DOI: --
发表时间: 1980
期刊: Acta Physiologica Scandinavica Supplementum
影响因子: --
作者:
H. Demopoulos;E. Flamm;Dennis D. Pietronigro;M. Seligman
通讯作者: M. Seligman
DOI: 10.1161/01.str.18.4.751
发表时间: 1987-07-01
期刊: STROKE
影响因子: 8.3
作者:
YOUNG, W;RAPPAPORT, ZH;FLAMM, ES
通讯作者: FLAMM, ES