http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가토심장동방결절 및 방실결절세포의 전기적 특성에 미치는 Taurocholate 및 Cholate의 효과
홍일부,고상돈,김기순 한양대학교 의과대학 1987 한양의대 학술지 Vol.7 No.1
The present study was designed to investigate effects of taurocholate (TCA) and cholate (CA) on transmembrane potentials of pacemaker cells of the rabbit heart. And also the electrophysiological effect of these bile acids on sinoatrial node was compared with on atrioventricular node. The results obtained were as follows: 1. Following superfusion of central sinus node cell (CSN) with CA (o.023-0.05%) action potential amplitude (APA) increased, while rate of spontaneous firing (RSF) decreased markedly. 2. When the peripheral sinus node cell (PSN) was superfused with TCA (O.05%), RSF of pacemaker was decreased, whereas action potential duration (APD60) was prolonged. On the other hand APA of PSN was increased by CA (0.05%). 3. Superfusion of atrioventricular mode cells (AVN) with CA (0.025-0.05%) and TCA (0.025-0.05%) resulted in a decrement in RSF and a prolongation of APD60. And also an increment in APA was observed during superfusion of the cells with TCA (0.05%). 4. To compare effects of bile acids on transmembrane potentials of the CSN and PSN, APA and RSF of CSN pacemaker cells were altered by CA while RSF and APD60 of PSN were changed by TCA. 5. When effects of bile acids on cellular potentials were compared between the CSN and the AVN, it was found that only Rsf and APD60 of AVN were decreased after wuperfusion with CA. 6. The minimun concentration of CA that reduced RSF of both sinoatrial and AVN cells was 0.025% and the lowest concentration of TCA that altered APD60 of AVN was 0.025% also. However, APA of all these pacemaker cells were increased following superfusion with 0.05% TCA or CA.
홍일부,이영우 대한신경외과학회 1979 Journal of Korean neurosurgical society Vol.8 No.2
The author had investigated the effects of Na-K-ATPase activity on the incubation period, ATP and enzyme concentration, and various electrolytes in brain homogenate of Korean native goat. The results were summarized as follows: 1) The initial velocity of Na-K-ATPase reaction was in proportion to incubation period and enzyme concentration. However, the optimal reaction was found at 2 mM ATP, 50-100 mM Na, 5-10 mM K, 2-4 mM Mg, and pH 7.4 in medium. 2) Na concentration for the optimal activity of Na-K-ATPase was varied by K concentration and the ratio of K to Na concentration for optimal activity was roughly 1 to 5. 3) The Na-K-ATPase activity was inhibited by Ca. The inhibitory effect by Ca was an apparently mixed type with respect to Na activation of the Na-K-ATPase, by reducing apparent Vmax but increasing the apparent Km for Na. 4) The Na-K-ATPase activity was inhibited by cadmium and ouabain, The Km for cadmium and ouabain was 8X10 M and 1X10 M, respectively The general characteristics of Na-K-ATPase activity in goat cerebral cortex were similar that of another animals.
石在鎬,朴魯憲,洪一夫,朱東善 大韓神經精神醫學會 1970 신경정신의학 Vol.9 No.2
The Authors observed a rare cases of tuberous sclerosis in a 18 years old girl. Because of her psychotic symptoms, this patient were consulted to our clinic, even though her seizure were controlled with anticonvulsanr. The several clinical aspect of this case are discussed and the literature are reviewed.