アブストラクト(21巻3号:神奈川歯学)

神奈川歯学

Japanese

Title : Potassium Gluconate (K-GL) のカリウム維持効果 - 赤血球をモデルとしたK-GLのK+輸送機構 -
Subtitle : 原著
Authors : 又吉勝男, 伊藤春生
Authors(kana) :
Organization : 神奈川歯科大学歯科薬理学教室
Journal : 神奈川歯学
Volume : 21
Number : 3
Page : 350-360
Year/Month : 1986 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」糖質コルチコイドの長期連用, 食物の長期間に渡る摂取不能, 外科処置後などにみられる低カリウム血症の治療に, カリウムを補う目的でカリウム製剤の投与が試みられることは, 口腔外科領域では日常である. さらに一般医科領域でも, 利尿剤が心疾患, その他の浮腫疾患, 高血圧の治療などに降圧剤として使用される機会は多い. とくに降圧利尿剤の長期連用, あるいは心不全, 浮腫の治療を目的とした強力な利尿剤投与によって生ずる低カリウム血症は臨床上の大きな問題点である. 臨床的に用いられているカリウム製剤, potassium chloride (KCl), potassium aspartate (Asp-K), potassium gluconate (K-GL) について比較した場合, 低カリウム血症の改善にはK-GLが最も強い効果を示し, とくにカリウム貯留時間が長いという点で優れている.
Practice : 歯科学
Keywords : K-GL, Asp-K, 赤血球, Na+, K+-ATPase, K+輸送

English

Title : Retentive Effect of Potassium Gluconate (K-GL) on Potassium Level - Mechanism of The Effect of K-GL on Potassium Transport of Rat Erythrocytes -
Subtitle :
Authors : Katsuo MATAYOSHI, Haruo Ito
Authors(kana) :
Organization : Department of Pharmacology, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 21
Number : 3
Page : 350-360
Year/Month : 1986 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] : Effect of potassium gluconate (K-GL) on K+ uptake of rat erythrocytes was investigated. K-GL produced a significant increase in active K+ transport of Na+-rich erythrocytes, while Na+, K+-ATPase activity of hemoglobin-free ghosts without a glycolytic system was unaffected. In the presence of hemolysates, K-GL was the most effective substance for the Na+, K+-ATPase activity of hemoglobin-free ghosts among the three potassium salts (KCl, potassium aspartate, K-GL) examined. When the experiment was carried out in intact erythrocytes, K-GL increased the lactate production and ATP content. In Na+-rich erythrocytes, the glycolysis inhibitors which produced a marked reduction in lactate content abolished the K-GL-induced increase in K+ and ATP content without affecting the KCl-induced increase. These results suggest that the K-GL enhances K+ transport of erythrocytes through acceleration of glycolytic process. This supports the hypothesis that K-GL extends the retention time of blood K+ level via enhancement of active K+ transport across biological membranes as well as erythrocyte membrane.
Practice : Dentistry
Keywords : K-GL, Asp-K, Na+, K+-ATPase