Shimane Journal of Medical Science

Shimane University Faculty of Medicine
ISSN :0386-5959(冊子体)
ISSN :2433-2410(オンライン)

クリエイティブ・コモンズ・ライセンス
これらの論文は クリエイティブ・コモンズ 表示 - 非営利 - 改変禁止 4.0 国際 ライセンスの下に提供されています。
ダウンロード数 : ?
Shimane Journal of Medical Science 9 1
1985-11-01 発行

Possible Role of Prostaglandins in the Regulation of Insulin Release from Rat Pancreatic Islets

正木 洋治
谷川 敬一郎
大国 智司
土山 真一
野手 信哉
ファイル
内容記述(抄録等)
To clarify whether prostaglandin synthesis is involved in the regulation of insulin release from isolated rat islets, we performed three different experiments. The direct effects of prostaglandin E_1 and prostacyclin on insulin release were investigated. Neither prostaglandin had any effect in the presence of low and high concentrations of glucose. Indomethacin, aspirin^<[○!R]> (acetylsalicylic acid) and flurbiprofen, inhibitors of cyclooxygenase, did not have a significant effect on insulin release evoked by glucose. Exogenous phospholipase A_2 purified from bee venom and melittin stimulated insulin release. A potent and selective inhibitor of phospholipase A_2,mepacrine, inhibited glucose-induced insulin release. The present work indicates that 1) cyclooxygenase does not participate early release of insulin from islet 2) activation of phospholipase A_2 might be involved in insulin stimulus-secretion coupling.