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DDVP가 가토 대뇌피질 Na-K-ATPase 활성도에 미치는 효소 역학적 분석
장병조,이영우 대한신경외과학회 1982 Journal of Korean neurosurgical society Vol.11 No.1
The Kinetics of inhibition of Na-K-ATPase activity by o, o-dimethyl o-(2, 2-dichlorovinly) phosphate(DDVP) was investigated with homogenate of rabbit cerebral cortex. The results were summarized as the follows : 1. Inhibition of Na-K-ATPase activity by DDVP showed a dose-dependent manner with an estimated I_(50) of 3.5×10^(-4) M. 2. Altered pH and activity curves for Na-K-ATPase activity demonstrated comparable inhibition by DDVP in buffered acidic, neutral and alkaline pH ranges. 3. Kinetic studies of cationic-substrate activation of Na-K-ATPase showed noncompetitive inhibition with respect to substrate and K^(+) and a mixed type inhibition with respect to Na^(+). These results suggest that DDVP appeared to exert its effects on Na-K-ATPase activity by interfering with the formation of Na-dependent phosphoenzyme.
장병조,이영우 대한신경외과학회 1983 Journal of Korean neurosurgical society Vol.12 No.3
The first report of growing skull fractures of children was in 1861 by John How ship who noted partial absorption of the right parietal bone, arising from a blow on the head in a child aged 9 months. The cases of cranial defects that develop from fractures of the skull in childhood are not common but post-traumatic arachnoid cyst by delivery forceps had rarely reported in world literature. Consequently the author had a case of post-traumatic arachnoid cyst by delivery forceps with its common features and evaluated on various aspects of this syndrome. This case had been treated by surgery with removal of cyst, cranioplasty and V-P shunt.