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心筋細胞機能障害と心作動物質

Research Project

Project/Area Number 01624001
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionThe University of Tokyo

Principal Investigator

杉本 恒明  東京大学, 医学部, 教授 (60019883)

Co-Investigator(Kenkyū-buntansha) 西 勝英  熊本大学, 医学部, 教授 (00040220)
平 則夫  東北大学, 医学部, 教授 (60004553)
栗原 敏  慈恵会医科大学, 医学部, 教授 (90057026)
中村 隆雄  大阪大学, 理学部, 教授 (30028112)
栗山 ひろし  九州大学, 医学部, 教授 (40037495)
Project Period (FY) 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥22,000,000 (Direct Cost: ¥22,000,000)
Fiscal Year 1989: ¥22,000,000 (Direct Cost: ¥22,000,000)
Keywordsプロスタグランジン / Gタンパク / GTP / Ca^<2+>トランジエント / 強心薬 / 抗不整脈薬 / 内因性ジギタリス様物質 / エンドセリン
Research Abstract

1.心筋の興奮・収縮に対する心作動物質の作用:べーター活性薬作用、cAMP、タンパク燐酸化、Ca動態の関連が拍動能を保持した単離心室筋細胞を用いた実験系において明らかになった(中村)。他方、乳頭筋標本を用いた実験において、これらの点についての再検討が必要であることが見出された(栗原)。選択的ベーター部分活性薬の薬理学的作用の相異の機序が受容体理論解析から検討され、高親和性選択刺激の重要性が示された(平)。2.心筋細胞膜イオン流の解析:心筋細胞内のイオン活性をイオン選択性電極法を用いて測定し、細胞内Na、Ca、K、そしてHイオンの動きが直接に観察された(西)。心房筋電流系においてアラキドン酸の5ーリポキシゲナーゼ代謝物がGタンパクを活性化し、Kチャネル電流系を開くことが知られた(杉本)。3.病的状態の心筋における検討:低酸素状態で流出する脂肪酸結合タンパクは心筋障害のマーカーになり得ることが見られた(安田)。虚血、再潅流時の心室筋標本のアセチルコリン、ノルエピネフリン量、cAMP量の変動とこれを修飾する要因の関与が検討され(小川)、また、この状況を想定した状態では活動電位立ち上り速度の使用依存性抑制への効果から抗不整脈薬の分類が試みられた(外山)。4.心作動物質:内因性ジギタリス様物質はほぼ精製され、その血管収縮性と細胞内機構の解明が進んだ(杉本)。本物質は糖尿病性心筋症発症に関与することも推測された(竹田)。内因性プロスタサイクリンは血管平滑筋細胞増殖の自己調節作用に関係する(杉本)。エンドセリンは心室筋陽性変力作用をもつが、これは加令にともない減弱する(真崎)。硝酸薬、Kチャネルオープナーの血管平滑筋作用におけるcGMPの関与が検討された(栗山)。

Report

(1 results)
  • 1989 Annual Research Report
  • Research Products

    (41 results)

All Other

All Publications (41 results)

  • [Publications] Yoshida A.et al.: "Bi-directional regulation of dephosphorylation of cAMP-dependent phosphorylated proteins by cAMP and calcium in permeabilized rat heart cells" J Biochem. (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yano T,et al.: "Acidosis depresses delayed afterdepolarization in guinea-pig myocardium" Am J Physiol. 26. (1989)

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      1989 Annual Research Report
  • [Publications] Kurihara S,et al.: "Modulation of Ca transients and tension by beta-adrenergic and muscarinic receptor stimulation in mammalian ventricular muscles" Proc IUPS. 17. 193 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yokoyama H,et al.: "Details of mode and mechanism of action of denopamine, a new orally active cardiotonic agent with affinity for Β_1ーreceptors" J Cardiovasc Pharmacol. 12. 323-331 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yanagisawa T,et al.: "Differential coupling to positive inotropic responses of cyclic AMP produced by stimulation of Β_1-and Β_2-adrenergic receptors" J Cardiovasc Pharmacol. 13. 64-75 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yokoyama H,et al.: "An explanation of bell-shaped,dose-positive inotropic effect curves for dopamine in canine right ventricular muscle" J Cardiovasc Pharmacol. (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yokoyama H,et al.: "Do calcium sensitizers and phosphodiesterase inhibitors affect differently the relation between myocardial contractility and oxgen consumption?" J Cardiovasc Pharmacol. (1989)

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      1989 Annual Research Report
  • [Publications] Morise T,et al.: "Biological activity of partially purified digitalis-like substance and Na-K-ATPase inhibitor in rats" Jpn Circ J. 32. 405-411 (1989)

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      1989 Annual Research Report
  • [Publications] Morise T,et al.: "The possible role of endogenous digitalis-like substance in the regulation of circadian change in urinary electrolyte excretion in man" Endocrinol Japon. (1989)

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      1989 Annual Research Report
  • [Publications] Takeda R,et al.: "Biochemical characterization of digitalis-like substance in human urine,partially purified by high pressure liquid chromatography" Clin Cardiol. (1989)

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      1989 Annual Research Report
  • [Publications] Ikeda M,et al.: "In vivo and in vitro effects of endogeneous digitalis-like substance" Am J Hypertens. (1989)

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      1989 Annual Research Report
  • [Publications] Kodama I,et al.: "Electrophysiological effects of KT-362,a new antiarrhythmic agent with vasodilating action,on isolated guinea pig ventricular muscle" J Cardiovasc Pharmacol. 52. 231-237 (1988)

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      1989 Annual Research Report
  • [Publications] Kodama I,et al.: "Electrophysiological effects of TYB-3823,a new antiarrhythmic agent,on isolated guinea pig ventricular muscles" J Cardiovasc Pharmacol. 13. 616-623 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Honjo H,et al.: "Effects of propafenone on electrical and mechanical activities of single ventricular myocytes isolated from guinea pig hearts" Br J Pharmacol. (1989)

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      1989 Annual Research Report
  • [Publications] Goto A,et al.: "The effects of urinary digitalis-like factor on factor on cultured vascular smooth muscle cells" Hypertension. 11. 645-650 (1988)

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      1989 Annual Research Report
  • [Publications] Ishimitsu T,et al.: "Thromboxane and vascular smooth muscle cell growth in genetically hypertensive rats" Hypertension. 12. 46-51 (1988)

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      1989 Annual Research Report
  • [Publications] Kurachi Y,et al.: "Arachidonic acid metabolites as intracellular modulators of G protein-gated cardiac K^+ channel" Nature. 337. 555-557 (1989)

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      1989 Annual Research Report
  • [Publications] Nakajima T,et al.: "Anticholinergic effects of quinidine,disopyramide,and procainamide in isolated atrial myocytes:Mediation by different molecular mechanisms" Circ Res. 64. 297-303 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kurachi Y,et al.: "Activation of atrial muscarinic K^+ channels by low concentrations of beta:gamma subunits of rat brain G protein" Pfluegers Archiv(Eur J Physiol). 413. 325-327 (1989)

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      1989 Annual Research Report
  • [Publications] Fu-iwara T,et al.: "Actions of a phorbol ester on factors regulating contraction in rabbit mesenteric artery" Circ Res. 63. 893-902 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Yamaguchi K,et al.: "Purification and characterization of inositol 1,4,5,-trisphosphate 3-Kinase from pig aortic smooth muscle" Biochem J. 251. 129-134 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Itoh T, et al.: "Effects of a phorbol ester on acetylcholine-induced Ca^<2+> mobilization and contraction in the porcine coronary artery" J Physiol. 397. 401-419 (1988)

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      1989 Annual Research Report
  • [Publications] Ohya Y,et al.: "Regulation of calcium current by intracellular calcium in smooth muscle cells of rabbit portal vein" Circ Res. 62. 375-383 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Nishiye E,et al.: "Factors inducing endothelium-dipendent relaxation in the guineapig basilar artery as estimated from the actions of haemoglobin" Br J Pharmacol. 96. 645-655 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Ishikawa T,et al.: "Positive inotropic action of novel vasoconstrictor peptide on guinea pig atria" Am J Physiol. 255. H970-H973 (1988)

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      1989 Annual Research Report
  • [Publications] Ishikawa T,et al.: "Positive chronotropic effects of endothelin,a novel endotheliumderived vasoconstrictor peptide" Pfluegers Archiv. 413. 108-110 (1988)

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      1989 Annual Research Report
  • [Publications] Inoue A,et al.: "The human endothelin family:Three structurally and pharmacologically distinct isopeptides predicted by three separate genes" Proc Natl Acad Sci USA. 86. 2863-2867 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Goto K,et al.: "Endothelin activates dihydropyridine-sensitive,voltage-dependent Ca^<2+> channel in vascular smooth muscle" Proc Natl Acad Sci USA. 86. 3915-3918 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Miyauchi T,et al.: "Characteristics of pressor response to endothelin in spontaneously hypertensive and Wistar-Kyoto rats" Hypertension. (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kawaguchi H,et al.: "Prostacyclin biosynthesis and phospholipase activity in hypoxic rat myocardium" Circ Res. 62. 1175-1181 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Fujii S,et al.: "Increased fatty acid binding protein of spontaneously hypertensive rats" J Hypertension. 6. 671-675 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Fujii S,et al.: "Fatty acid binding protein of cardiac muscle in the spontaneously hypertensive rat:Effect of hypertrophy and its regression" J Mol Cell Cardiol. 20. 779-787 (1988)

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      1989 Annual Research Report
  • [Publications] Kawaguchi H,et al.: "Effect of various plasminogen activator on prostacyclin synthesis in cultured vascular cells" Circ Res. 63. 1029-1035 (1988)

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      1989 Annual Research Report
  • [Publications] Okamoto H,et al.: "Lipid alterations in renal membrane of stroke-prone spontaneously hypertensive rats" Hypertension. 13. 456-462 (1989)

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      1989 Annual Research Report
  • [Publications] Okumura K,et al.: "Alteration of 1,2-diacylglycerol content in myocardium from diabetic rats" Diabetes. 37. 1168-1172 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Okumura K,et al.: "Increased 1,2-diacylglycerol content in myopathic hamster hearts at a prenecrotic stage" Life Sci. 43. 1371-1377 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] Ohno O,et al.: "Effects of reperfusion on the cardiac acetylcholine and norepinephrine contents in rat hearts" J Mol Cell Cardiol. 21. 139-149 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Akiyama N, et al.: "Altered acetylcholine and norepinephrine concentrations in diabetic rat hearts" Diabetes. 38. 231-236 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Watanabe Y,et al.: "Effects of digoxin on acetylcholine and norepinephrine concentrations in rat myocardium" J Cardiovasc Pharmacol. 13. 702-708 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kurihara S,et al.: "eds Segawa T,Endo M,Ui M,Kurihara K Physiology and Pharmacology of Transmembrane Signalling" Elsevier science Pub, (1989)

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      1989 Annual Research Report
  • [Publications] Ikeda M,et al.: "eds Lee TH,Huh KB Recent Advances in Insulin Therapy" Elsevier Science Pub, (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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