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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Shin-Woong (College of Phamacy, Yeungnam University) Lee, Jeung-Soo (College of Phamacy, Yeungnam University) Kim, Young-Hie (College of Phamacy, Yeungnam University) Jin, Kap-Duck (College of Phamacy, Yeungnam University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제9권 제1호
발행연도
1986.1
수록면
29 - 38 (10page)

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The effects of ginseng saponins on the sarcolemmal $Na^{+}$, $K^{+}$-ATPase were compared to gypsophila saponin, sodium dodecylsulfate (SDS), and Triton X-100 to elucidate whether the effects are due to the membrane distruption, using a highly enriched preparation of cardiac sarcolemma prepared from dog ventricular myocardium. About 26% and 29% of vesicles in the preparation, enriched in ouabain-sensitive $Na^{+}$, $K^{+}$-ATP ase, $\beta$-adrenergic and muscarinic receptors are rightside-out and inside-out orientation, respectively. Ginseng saponins (triol>total> diol) inhibited $Na^{+}$, $K^{+}$-ATP ase activity, $Na^{+}$, $K^{+}$-ATPase activity and [$^{3}$H]ouabain binding of sarcolemmal vesicles. However, gypsophila saponin, SDS (0.4$\mu$g/$\mu$g protein) and Triton X-100 (0.6 $\mu$g/$\mu$g protein) caused about 1.35 and 1.40-fold increase in $Na^{+}$, $K^{+}$-ATPase activity and [$^{3}$H] oubain binding, respectively. Especially, the activating effect of gypsophila saponin on membrane Na+, K+ ATPase was detected at gypsophila saponin to sarcolemmal protein ratios as high as 100. Low dose of ginseng saponin (3$\mu$g/$\mu$g protein) decreased the phosphorylation sites and the concentration of ouabain binding sites (Bmax) without affecting the turnover number and affinity for ouabain binding, while gypsophila saponin, SDS(0.4 ug/ug protein), ahd Triton X-100 (0.6$\mu$g/$\mu$g protein) increased the Bmax. The results suggest that ginseng saponins cause a decrease in the number of active sites by interacting directly with $Na^{+}$, $K^{+}$-ATPase before disruption of membrane barriers of sarcolemmal vesicles.

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