2000 Fiscal Year Annual Research Report

新規カルモデュリン拮抗薬の抗アポトーシス作用の神経薬理学的研究

Research Project

Project/Area Number	11877018
Research Institution	Kumamoto University
Principal Investigator	福永浩司熊本大学, 医学部, 助教授 (90136721)
Co-Investigator(Kenkyū-buntansha)	宮本英七熊本大学, 医学部, 教授 (50109659)
Keywords	カルモデュリン / アポトーシス / 遅発性神経細胞死 / 脳虚血 / 一酸化窒素合成酵素 / 一酸化窒素 / 神経保護薬 / 海馬
Research Abstract	新規カルモデュリン拮抗薬であるDY-9760eはin vitroにおいて種々のカルモデュリン依存性酵素を阻害する。白崎ら(第一製薬)はラット中大脳動脈閉塞モデルにおいて虚血に伴う神経細胞死を有意に抑制することを報告した。本研究では新たな作用機構を有する新規脳保護薬、DY-9760eのin vivoにおける作用点を明らかにすることである。マウス神経芽腫細胞N1E-115細胞においてカルシウムイオノフォア、A23187によって誘発されるNO産生に対する効果を検討した。1μM以下の濃度で有意にNOの産生を抑制した。このNO産生抑制効果と同じ濃度でDY-9760eはA23187によるN1E-115細胞からのLDH(lactate dehydrogenase)の遊離を抑制し、細胞保護効果を示した。さらに、砂ネズミの前脳虚血モデルを用いて神経保護作用と、虚血による海馬でのNO産生に対する効果を検討した。ラット中大脳動脈閉塞モデルと同様に虚血負荷による遅発性神経細胞死をDY-9760eは有意に抑制した。また、マイクロダイアリシス法で海馬内のNO濃度を測定すると、虚血直後、海馬でNO濃度が有意に上昇することが解った。このNO濃度上昇に対してDY-9760eは抑制した。これらのin vitroとin vivoの結果からDY-9760eはカルモデュリン依存性NOSを阻害することによって神経保護作用を示すことが明らかとなった。さらに、神経型、内皮細胞型NOSに対する選択性について検討する必要がある。

Research Products

(15 results)

All Other

All Publications (15 results)

[Publications] K.Fukunaga: "Decreased protein phosphatase 2A activity in hippocampal long-term potentiation."J.Neurochem.. 74. 807-817 (2000)
[Publications] J.Kasahara: "Activation of Ca^<2+>/calmodulin-dependent protein kinase IV in cultured rat hippocampal neurons."J.Neurosci.Res.. 59. 594-600 (2000)
[Publications] K.Fukunaga: "Inhibition of neuronal nitric oxide synthase activity by 3-[2-[4-(3-chloro-2-methylphenyl)-1-piperazinyl]ethyl]-5,6-dimethoxy-1-(4-imidazolylmethyl)-1H-indazole dihydrochloride 3,5 hydrate (DY-9760e), a novel neuroprotective agent, in vitro and in cultured neuroblastoma cells in situ."Biochem.Pharmacol.. 60. 693-699 (2000)
[Publications] H.Kanasaki: "Involvement of p38 mitogen-activated protein kinase activation in bromocriptine-induced apoptosis in rat pituitary GH3 cells."Biol.Reprod.. 62. 1486-1494 (2000)
[Publications] Y.Takeuchi: "Identification of the isoforms of Ca^<2+>/calmodulin-dependent protein kinase II in rat astrocytes and their subcellular localization."J.Neurochem.. 74. 2557-2567 (2000)
[Publications] H.Tabuchi: "Regulation of insulin secretion by overexpression of Ca^<2+>/calmodulin-dependent protein kinase II in insulinoma MIN6 cells."Endocrinology. 141. 2350-2360 (2000)
[Publications] I.Munir: "Expression of cyclo-oxygenase 2 by prostaglandin E2 in human endometrial adenocarcinoma cell line HEC-1B."Biol.Reprod.. 63. 933-941 (2000)
[Publications] T.Moriya: "Close linkage between calcium/calmodulin kinase II α/β and NMDA-2A receptors in the lateral amygdala and significance for retrieval of auditory fear conditioning."Eur.J.Neurosci.. 12. 3307-3314 (2000)
[Publications] Q.Zhang: "Changes of free fatty acids and acyl-coas in rat brain hippocampal slice with tetraethy-lammonium-induced long-term potentiation."Biochem.Biophys.Res.Commun.. 267. 208-212 (2000)
[Publications] I.Munir: "Signaling pathways affecting cyclooxygenase 2 expression in endometrial epithelial cells."Recent Res.Devel.Endocrinol.. 1. 261-272 (2000)
[Publications] K.Fukunaga: "A working model of CaM kinase II activity in hippocampal long-term potentiation and memory."Neurosci.Res.. 38. 3-17 (2000)
[Publications] 福永浩司: "海馬における神経活動依存性シナプス伝達効率の調節."蛋白質核酸酵素,増刊「神経回路形成と機能発達」. 45. 474-482 (2000)
[Publications] S.-I.Yokota: "Involvement of calcium-calmodulin protein kinase but not of mitogen-activated protein kinase in light-induced phase delay and per gene expression in the suprachiasmatic nucleus of hamster."J.Neurochem.. (in press). (2001)
[Publications] T.Yonehara: "Involvement of mitogen-activated protein kinase in cAMP-induced hormone gene expression in rat pituitary GH3 cells."Endocrinology. (in press). (2001)
[Publications] E.Miyamoto: "Involvement of CaM kinase II and mitogen-activated protein kinase in hippocampal long-term potentiation. Neuroscientific Basis of Dementia (eds.: C.Tanaka,P.L.McGeer,Y.Ihara)"Birkhauser Verlag, Basel, Switzerland. 9 (2001)

2000 Fiscal Year Annual Research Report

新規カルモデュリン拮抗薬の抗アポトーシス作用の神経薬理学的研究

Principal Investigator

福永 浩司 熊本大学, 医学部, 助教授 (90136721)

Research Products

[Publications] K.Fukunaga: "Decreased protein phosphatase 2A activity in hippocampal long-term potentiation."J.Neurochem.. 74. 807-817 (2000)

[Publications] J.Kasahara: "Activation of Ca^<2+>/calmodulin-dependent protein kinase IV in cultured rat hippocampal neurons."J.Neurosci.Res.. 59. 594-600 (2000)

[Publications] H.Kanasaki: "Involvement of p38 mitogen-activated protein kinase activation in bromocriptine-induced apoptosis in rat pituitary GH3 cells."Biol.Reprod.. 62. 1486-1494 (2000)

[Publications] Y.Takeuchi: "Identification of the isoforms of Ca^<2+>/calmodulin-dependent protein kinase II in rat astrocytes and their subcellular localization."J.Neurochem.. 74. 2557-2567 (2000)

[Publications] H.Tabuchi: "Regulation of insulin secretion by overexpression of Ca^<2+>/calmodulin-dependent protein kinase II in insulinoma MIN6 cells."Endocrinology. 141. 2350-2360 (2000)

[Publications] I.Munir: "Expression of cyclo-oxygenase 2 by prostaglandin E2 in human endometrial adenocarcinoma cell line HEC-1B."Biol.Reprod.. 63. 933-941 (2000)

[Publications] T.Moriya: "Close linkage between calcium/calmodulin kinase II α/β and NMDA-2A receptors in the lateral amygdala and significance for retrieval of auditory fear conditioning."Eur.J.Neurosci.. 12. 3307-3314 (2000)

[Publications] Q.Zhang: "Changes of free fatty acids and acyl-coas in rat brain hippocampal slice with tetraethy-lammonium-induced long-term potentiation."Biochem.Biophys.Res.Commun.. 267. 208-212 (2000)

[Publications] I.Munir: "Signaling pathways affecting cyclooxygenase 2 expression in endometrial epithelial cells."Recent Res.Devel.Endocrinol.. 1. 261-272 (2000)

[Publications] K.Fukunaga: "A working model of CaM kinase II activity in hippocampal long-term potentiation and memory."Neurosci.Res.. 38. 3-17 (2000)

[Publications] 福永浩司: "海馬における神経活動依存性シナプス伝達効率の調節."蛋白質核酸酵素,増刊「神経回路形成と機能発達」. 45. 474-482 (2000)

[Publications] S.-I.Yokota: "Involvement of calcium-calmodulin protein kinase but not of mitogen-activated protein kinase in light-induced phase delay and per gene expression in the suprachiasmatic nucleus of hamster."J.Neurochem.. (in press). (2001)

[Publications] T.Yonehara: "Involvement of mitogen-activated protein kinase in cAMP-induced hormone gene expression in rat pituitary GH3 cells."Endocrinology. (in press). (2001)

[Publications] E.Miyamoto: "Involvement of CaM kinase II and mitogen-activated protein kinase in hippocampal long-term potentiation. Neuroscientific Basis of Dementia (eds.: C.Tanaka,P.L.McGeer,Y.Ihara)"Birkhauser Verlag, Basel, Switzerland. 9 (2001)

福永浩司熊本大学, 医学部, 助教授 (90136721)