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Tsukasa Koyama

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Living Beings

Chemicals & Drugs

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Fear

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Drug Dose Response Relationship

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Microdialysis

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Bipolar Disorder

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Khin K Tha; Daisuke Yoshida; Yuri Zaitsu; Satoshi Terae; Kawser Akter Popy; Noriyuki Fujima; Takeshi Inoue; Yoichi M Ito; Yuki Kako; Nobuki Kitagawa; Tsukasa Koyama; Tamaki Miyamoto; Shin Nakagawa; Yasuya Nakato; Hiroki Shirato
Impaired integrity of the brain parenchyma in non-geriatric patients with major depressive disorder revealed by diffusion tensor imaging.
Yutaka Fujii; Naoki Hashimoto; Yuki Kako; Nobuki Kitagawa; Tsukasa Koyama; Nobuyuki Mitsui; Yusuke Shimizu; Teruaki Tanaka; Atsuhito Toyomaki; Satoshi Asakura; Ichiro Kusumi
Severity of generalized social anxiety disorder correlates with low executive functioning.
Ning Song; Hiroyuki Toda; Xiaobai Li; Shin Nakagawa; Hiroyuki Sakagami; Shuken Boku; Takeshi Inoue; Takeshi Izumi; Akiko Kato; Tsukasa Koyama
Involvement of CaMKIV in neurogenic effect with chronic fluoxetine treatment.

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2013: Khin K Tha; Daisuke Yoshida; Yuri Zaitsu; Satoshi Terae; Kawser Akter Popy; Noriyuki Fujima; Takeshi Inoue; Yoichi M Ito; Yuki Kako; Nobuki Kitagawa; Tsukasa Koyama; Tamaki Miyamoto; Shin Nakagawa; Yasuya Nakato; Hiroki Shirato
Impaired integrity of the brain parenchyma in non-geriatric patients with major depressive disorder revealed by diffusion tensor imaging.
Psychiatry research 2013;212(3):208-15.
2013: Yutaka Fujii; Naoki Hashimoto; Yuki Kako; Nobuki Kitagawa; Tsukasa Koyama; Nobuyuki Mitsui; Yusuke Shimizu; Teruaki Tanaka; Atsuhito Toyomaki; Satoshi Asakura; Ichiro Kusumi
Severity of generalized social anxiety disorder correlates with low executive functioning.
Neuroscience letters 2013;543():42-6.
2013: Ning Song; Hiroyuki Toda; Xiaobai Li; Shin Nakagawa; Hiroyuki Sakagami; Shuken Boku; Takeshi Inoue; Takeshi Izumi; Akiko Kato; Tsukasa Koyama
Involvement of CaMKIV in neurogenic effect with chronic fluoxetine treatment.
The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP) 2013;16(4):803-12.
2013: Shuken Boku; Takeshi Inoue; Akiko Kato; Shin Nakagawa; Yuki Omiya; Naoki Takamura; Hiroyuki Toda; Tsukasa Koyama
ROCK2 regulates bFGF-induced proliferation of SH-SY5Y cells through GSK-3β and β-catenin pathway.
Brain research 2013;1492():7-17.
2013: Hiromi Kimura; Nobuki Kitagawa; Yuji Kitaichi; Tomohiro Abekawa; Satoshi Asakura; Kenzo Denda; Takeshi Inoue; Yuki Kako; Rui Kawashima; Ichiro Kusumi; Takuya Masui; Shin Nakagawa; Akemi Osaki; Katsuji Suzuki; Teruaki Tanaka; Hiroyoshi Yamanaka; Tsukasa Koyama
Differences between bipolar and unipolar depression on Rorschach testing.
Neuropsychiatric disease and treatment 2013;9():619-27.
2012: Naoki Takamura; Takeshi Inoue; Takahiro Masuda; Shin Nakagawa; Tsukasa Koyama
The effects of the co-administration of the α₁-adrenoreceptor antagonist prazosin on the anxiolytic effect of citalopram in conditioned fear stress in the rat.
Progress in neuro-psychopharmacology & biological psychiatry 2012;39(1):107-11.
2012: Takeshi Inoue; T Ishikane; Koichi Ito; Kunihiko Kawamura; Ryoji Matsubara; Yutaka Ono; Kuniko Sasaki; Kaoru Shinohara; Takashi Suzuki; Kiyoshi Tsuchiya; Shuken Boku; Daisuke Fujisawa; Minoru Honda; Tsukasa Koyama
Sertraline treatment of patients with major depressive disorder who failed initial treatment with paroxetine or fluvoxamine.
Progress in neuro-psychopharmacology & biological psychiatry 2012;38(2):223-7.
2012: Ning Song; Naoki Takamura; Hiroyuki Toda; Shin Nakagawa; Yuki Omiya; Shuken Boku; Takeshi Inoue; Akiko Kato; Yuji Kitaichi; Tsukasa Koyama
Mood stabilizers commonly restore staurosporine-induced increase of p53 expression and following decrease of Bcl-2 expression in SH-SY5Y cells.
Progress in neuro-psychopharmacology & biological psychiatry 2012;38(2):183-9.
2012: Takeshi Inoue; Tsukasa Koyama
[Anxiety disorder].
Brain and nerve = Shinkei kenkyū no shinpo 2012;64(2):131-8.
2012: Takahiro Masuda; Shin Nakagawa; Hiroyuki Nishikawa; Naoki Takamura; Shuken Boku; Takeshi Inoue; Akiko Kato; Tsukasa Koyama
Noradrenaline increases neural precursor cells derived from adult rat dentate gyrus through β2 receptor.
Progress in neuro-psychopharmacology & biological psychiatry 2012;36(1):44-51.
2012: Yuji Kitaichi; Shuken Boku; Takeshi Inoue; Akiko Kato; Ichiro Kusumi; Shin Nakagawa; Tsukasa Koyama
Effect of triiodothyronine (T(3)) augmentation of acute milnacipran administration on monoamine levels: an in vivo microdialysis study in rats.
Neuropsychiatric disease and treatment 2012;8():501-7.
2012: Ichiro Kusumi; Katsuji Suzuki; Tsukasa Koyama
[Cellular calcium signaling in bipolar disorder].
Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica 2012;114(7):821-8.
2012: Takeshi Inoue; Rie Kameyama; Shuken Boku; Tsugiko Kurita; Shin Nakagawa; Yasuya Nakato; Teruaki Tanaka; Hiroyuki Toda; Tsukasa Koyama
Utility and limitations of PHQ-9 in a clinic specializing in psychiatric care.
BMC psychiatry 2012;12():73.
2012: Tsugiko Kurita; Tsukasa Koyama
[Antipsychotic drugs].
Nihon rinsho. Japanese journal of clinical medicine 2012;70(1):63-6.
2012: Satoshi Asakura; Yutaka Fujii; Mifumi Hasegawa; Naoki Hashimoto; Takeshi Inoue; Koki Ito; Yuki Kako; Nobuki Kitagawa; Ichiro Kusumi; Shin Nakagawa; Yasuya Nakato; Teruaki Tanaka; Tsukasa Koyama
Social Anxiety/Taijin-Kyofu Scale (SATS): development and psychometric evaluation of a new instrument.
Psychopathology 2012;45(2):96-101.
2011: Ichiro Kusumi; Kazuko Miyamoto; Hiroyuki Sawayama; Shoichiro Tsuchida; Keiichi Uemura; Naoki Hashimoto; Tadayuki Hayashishita; Minoru Honda; Koki Ito; Yuki Kako; Tsukasa Koyama
Screening for diabetes using monitoring guidance in schizophrenia patients treated with second-generation antipsychotics: a 1-year follow-up study.
Progress in neuro-psychopharmacology & biological psychiatry 2011;35(8):1922-6.
2011: Yasuya Nakato; Tomohiro Abekawa; Takeshi Inoue; Koki Ito; Tsukasa Koyama
Lamotrigine blocks repeated high-dose methamphetamine-induced behavioral sensitization to dizocilpine (MK-801), but not methamphetamine in rats.
Neuroscience letters 2011;504(2):131-4.
2011: Naoki Hashimoto; Koki Ito; Yuki Kako; Ichiro Kusumi; Mié Matsui; Atsuhito Toyomaki; Tsukasa Koyama
Effect of explicit instruction on Japanese Verbal Learning Test in schizophrenia patients.
Psychiatry research 2011;188(2):289-90.
2011: Youji Takeda; Nagara Tamaki; Tsugiko Kurita; Kotaro Sakurai; Tohru Shiga; Tsukasa Koyama
Persistent déjà vu associated with hyperperfusion in the entorhinal cortex.
Epilepsy & behavior : E&B 2011;21(2):196-9.
2011: Ichiro Kusumi; Mitsukuni Murasaki; Keiichi Uemura; Yoshihito Atsumi; Naoki Hashimoto; Tadayuki Hayashishita; Minoru Honda; Koki Ito; Takashi Kadowaki; Tsukasa Koyama
Screening for diabetes using Japanese monitoring guidance in schizophrenia patients treated with second-generation antipsychotics: a cross-sectional study using baseline data.
Psychiatry and clinical neurosciences 2011;65(4):349-55.
2011: Shuken Boku; Hiroshi Honma; Hiroshi Honma; Takeshi Inoue; Shin Nakagawa; Tsukasa Koyama
Olanzapine augmentation of milnacipran for stage 2 treatment-resistant major depression: an open study.
Human psychopharmacology 2011;26(3):237-41.
2011: Ichiro Kusumi; Minoru Honda; Koichi Ito; Keiichi Uemura; Yukie Kumazawa; T Ishikane; Yasushi Niide; Tsukasa Koyama
Risperidone oral solution versus standard tablets for the acute treatment of patients with schizophrenia.
Progress in neuro-psychopharmacology & biological psychiatry 2011;35(2):537-40.
2011: Yasuya Nakato; Tomohiro Abekawa; Koki Ito; Takeshi Inoue; Tsukasa Koyama
Lamotrigine blocks apoptosis induced by repeated administration of high-dose methamphetamine in the medial prefrontal cortex of rats.
Neuroscience letters 2011;490(3):161-4.
2011: Shuken Boku; Shin Nakagawa; Takahiro Masuda; Hiroyuki Nishikawa; Akiko Kato; Hiroyuki Toda; Ning Song; Yuji Kitaichi; Takeshi Inoue; Tsukasa Koyama
Effects of mood stabilizers on adult dentate gyrus-derived neural precursor cells.
Progress in neuro-psychopharmacology & biological psychiatry 2011;35(1):111-7.
2010: Yasuya Nakato; Tomohiro Abekawa; Koki Ito; Takeshi Inoue; Tsukasa Koyama
Lamotrigine blocks the initiation and expression of repeated high-dose methamphetamine-induced prepulse inhibition deficit in rats.
Neuroscience letters 2010;481(3):183-7.
2010: Satoshi Asakura; Tsukasa Koyama
[Treatment of social anxiety disorder (SAD)].
Nihon rinsho. Japanese journal of clinical medicine 2010;68(8):1544-9.
2010: Kotaro Sakurai; Youji Takeda; Naoaki Tanaka; Tsugiko Kurita; Hideaki Shiraishi; Fumiya Takeuchi; Shingo Nakane; Keitaro Sueda; Tsukasa Koyama
Generalized spike-wave discharges involve a default mode network in patients with juvenile absence epilepsy: a MEG study.
Epilepsy research 2010;89(2-3):176-84.
2010: Takeshi Inoue; Mayumi Kitagawa; Teruaki Tanaka; Shin Nakagawa; Tsukasa Koyama
Depression and major depressive disorder in patients with Parkinson's disease.
Movement disorders : official journal of the Movement Disorder Society 2010;25(1):44-9.
2010: Shuken Boku; Shin Nakagawa; Tsukasa Koyama
Glucocorticoids and lithium in adult hippocampal neurogenesis.
Vitamins and hormones 2010;82():421-31.
2009: Shinji Hashimoto; Takeshi Inoue; Ihoko Muraki; Tsukasa Koyama
Effects of acute citalopram on the expression of conditioned freezing in naive versus chronic citalopram-treated rats.
Progress in neuro-psychopharmacology & biological psychiatry 2009;33(1):113-7.
2009: Shuken Boku; Shin Nakagawa; Takahiro Masuda; Hiroyuki Nishikawa; Akiko Kato; Yuji Kitaichi; Takeshi Inoue; Tsukasa Koyama
Glucocorticoids and lithium reciprocally regulate the proliferation of adult dentate gyrus-derived neural precursor cells through GSK-3beta and beta-catenin/TCF pathway.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2009;34(3):805-15.
2009: Yushi Suzuki; Tsugiko Kurita; Kotaro Sakurai; Youji Takeda; Tsukasa Koyama
[Case report of anti-NMDA receptor encephalitis suspected of schizophrenia].
Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica 2009;111(12):1479-84.
2008: Hiroyuki Nishikawa; Takeshi Inoue; Takuya Masui; Takeshi Izumi; Shin Nakagawa; Tsukasa Koyama
Pharmacokinetic interaction between tandospirone and fluvoxamine in the rat contextual conditioned fear stress model and its functional consequence: Involvement of cytochrome P450 3A4.
Psychiatry and clinical neurosciences 2008;62(5):591-6.
2008: Ihoko Muraki; Takeshi Inoue; Shinji Hashimoto; Takeshi Izumi; Tsukasa Koyama
Effect of different challenge doses after repeated citalopram treatment on extracellular serotonin level in the medial prefrontal cortex: in vivo microdialysis study.
Psychiatry and clinical neurosciences 2008;62(5):568-74.
2008: Ihoko Muraki; Takeshi Inoue; Tsukasa Koyama
Effect of co-administration of the selective 5-HT1A receptor antagonist WAY 100,635 and selective 5-HT1B/1D receptor antagonist GR 127,935 on anxiolytic effect of citalopram in conditioned fear stress in the rat.
European journal of pharmacology 2008;586(1-3):171-8.
2008: Yuji Kitaichi; Takeshi Inoue; Takeshi Izumi; Shin Nakagawa; Teruaki Tanaka; Takuya Masui; Tsukasa Koyama
Effect of co-administration of a serotonin-noradrenaline reuptake inhibitor and a dopamine agonist on extracellular monoamine concentrations in rats.
European journal of pharmacology 2008;584(2-3):285-90.
2008: Ichiro Kusumi; Takuya Masui; Tsukasa Koyama
Long-term perospirone treatment with a single dose at bedtime in schizophrenia: relevant to intermittent dopamine D2 receptor antagonism.
Progress in neuro-psychopharmacology & biological psychiatry 2008;32(2):520-2.
2008: Takuya Masui; Ryota Hashimoto; Ichiro Kusumi; Katsuji Suzuki; Teruaki Tanaka; Shin Nakagawa; Tatsuyo Suzuki; Nakao Iwata; Norio Ozaki; Tadafumi Kato; Masatoshi Takeda; Hiroshi Kunugi; Tsukasa Koyama
A possible association between missense polymorphism of the breakpoint cluster region gene and lithium prophylaxis in bipolar disorder.
Progress in neuro-psychopharmacology & biological psychiatry 2008;32(1):204-8.
2008: Atsuhito Toyomaki; Ichiro Kusumi; Testsuaki Matsuyama; Yuki Kako; Koki Ito; Tsukasa Koyama
Tone duration mismatch negativity deficits predict impairment of executive function in schizophrenia.
Progress in neuro-psychopharmacology & biological psychiatry 2008;32(1):95-9.
2007: Hiroki Tao; Nobuki Kitagawa; Yuki Kako; Hiroyoshi Yamanaka; Koichi Ito; Kenzo Denda; Tsukasa Koyama
A case of anorexia nervosa with Marchiafava-Bignami Disease that responded to high-dose intravenous corticosteroid administration.
Psychiatry research 2007;156(2):181-4.
2007: Hiroyuki Nishikawa; Takeshi Inoue; Takeshi Izumi; Tsukasa Koyama
Synergistic effects of tandospirone and selective serotonin reuptake inhibitors on the contextual conditioned fear stress response in rats.
European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology 2007;17(10):643-50.
2007: Teruaki Tanaka; Tsukasa Koyama
[Proper use of antidepressants in the acute and maintenance phase treatment of depression].
Nihon rinsho. Japanese journal of clinical medicine 2007;65(9):1639-44.
2007: Mari Murashita; Ichiro Kusumi; Hiroshi Hosoda; Kenji Kangawa; Tsukasa Koyama
Acute administration of clozapine concurrently increases blood glucose and circulating plasma ghrelin levels in rats.
Psychoneuroendocrinology 2007;32(7):777-84.
2007: Takeshi Izumi; Nobuyuki Iwamoto; Yuji Kitaichi; Akiko Kato; Takeshi Inoue; Tsukasa Koyama
Effects of co-administration of antidepressants and monoamine oxidase inhibitors on 5-HT-related behavior in rats.
European journal of pharmacology 2007;565(1-3):105-12.
2007: Hiroyuki Nishikawa; Takeshi Inoue; Takuya Masui; Takeshi Izumi; Tsukasa Koyama
Effects of cytochrome P450 (CYP) 3A4 inhibitors on the anxiolytic action of tandospirone in rat contextual conditioned fear.
Progress in neuro-psychopharmacology & biological psychiatry 2007;31(4):926-31.
2007: Yuki Kako; Yusuke Niwa; Atsuhito Toyomaki; Hiroyoshi Yamanaka; Nobuki Kitagawa; Kenzo Denda; Tsukasa Koyama
A case of adult attention-deficit/hyperactivity disorder alleviated by milnacipran.
Progress in neuro-psychopharmacology & biological psychiatry 2007;31(3):772-5.
2007: Mari Murashita; Takeshi Inoue; Ichiro Kusumi; Shin Nakagawa; Kouichi Itoh; Teruaki Tanaka; Takeshi Izumi; Hiroshi Hosoda; Kenji Kangawa; Tsukasa Koyama
Glucose and lipid metabolism of long-term risperidone monotherapy in patients with schizophrenia.
Psychiatry and clinical neurosciences 2007;61(1):54-8.
2007: Tatsuyuki Akimoto; Ichiro Kusumi; Katsuji Suzuki; Tsukasa Koyama
Effects of calmodulin and protein kinase C modulators on transient Ca2+ increase and capacitative Ca2+ entry in human platelets: relevant to pathophysiology of bipolar disorder.
Progress in neuro-psychopharmacology & biological psychiatry 2007;31(1):136-41.
2007: Teruaki Tanaka; Takeshi Inoue; Katsuji Suzuki; Yuji Kitaichi; Takuya Masui; Kenzo Denda; Tsukasa Koyama
[Clinical relevance of antidepressant-induced activation syndrome: from a perspective of bipolar spectrum disorder].
Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica 2007;109(8):730-42.
2007: Tatsuyuki Akimoto; Ichiro Kusumi; Katsuji Suzuki; Takuya Masui; Tsukasa Koyama
Effects of valproate on serotonin-induced intracellular calcium mobilization in human platelets.
Journal of psychiatry & neuroscience : JPN 2007;32(1):17-22.
2006: Takeshi Inoue; Shin Nakagawa; Yuji Kitaichi; Takeshi Izumi; Teruaki Tanaka; Takuya Masui; Ichiro Kusumi; Kenzo Denda; Tsukasa Koyama
Long-term outcome of antidepressant-refractory depression: the relevance of unrecognized bipolarity.
Journal of affective disorders 2006;95(1-3):61-7.
2006: Takuya Masui; Ichiro Kusumi; Yoshito Takahashi; Tsukasa Koyama
Effect of carbamazepine on the single oral dose pharmacokinetics of perospirone and its active metabolite.
Progress in neuro-psychopharmacology & biological psychiatry 2006;30(7):1330-3.
2006: Kouichi Ito; Tomohiro Abekawa; Tsukasa Koyama
Valproate blocks high-dose methamphetamine-induced behavioral cross-sensitization to locomotion-inducing effect of dizocilpine (MK-801), but not methamphetamine.
Psychopharmacology 2006;186(4):525-33.
2006: Takeshi Inoue; Shin Nakagawa; Takeshi Izumi; Yuji Kitaichi; Tsukasa Koyama
Effect of combined treatment with noradrenaline and serotonin reuptake inhibitors on conditioned freezing.
European journal of pharmacology 2006;540(1-3):91-5.
2006: Takeshi Izumi; Takeshi Inoue; Yuji Kitaichi; Shin Nakagawa; Tsukasa Koyama
Target brain sites of the anxiolytic effect of citalopram, a selective serotonin reuptake inhibitor.
European journal of pharmacology 2006;534(1-3):129-32.
2006: Takeshi Izumi; Nobuyuki Iwamoto; Yuji Kitaichi; Akiko Kato; Takeshi Inoue; Tsukasa Koyama
Effects of co-administration of a selective serotonin reuptake inhibitor and monoamine oxidase inhibitors on 5-HT-related behavior in rats.
European journal of pharmacology 2006;532(3):258-64.
2006: Yuji Kitaichi; Takeshi Inoue; Shin Nakagawa; Takeshi Izumi; Tsukasa Koyama
Effect of co-administration of subchronic lithium pretreatment and acute MAO inhibitors on extracellular monoamine levels and the expression of contextual conditioned fear in rats.
European journal of pharmacology 2006;532(3):236-45.
2006: XiaoBai Li; Takeshi Inoue; Tomohiro Abekawa; ShiMin Weng; Shin Nakagawa; Takeshi Izumi; Tsukasa Koyama
5-HT1A receptor agonist affects fear conditioning through stimulations of the postsynaptic 5-HT1A receptors in the hippocampus and amygdala.
European journal of pharmacology 2006;532(1-2):74-80.
2006: Takuya Masui; Ichiro Kusumi; Yoshito Takahashi; Tsukasa Koyama
Effects of itraconazole and tandospirone on the pharmacokinetics of perospirone.
Therapeutic drug monitoring 2006;28(1):73-5.
2006: Takuya Masui; Ryota Hashimoto; Ichiro Kusumi; Katsuji Suzuki; Teruaki Tanaka; Shin Nakagawa; Hiroshi Kunugi; Tsukasa Koyama
A possible association between the -116C/G single nucleotide polymorphism of the XBP1 gene and lithium prophylaxis in bipolar disorder.
The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP) 2006;9(1):83-8.
2006: Kenzo Denda; Yuki Kako; Nobuki Kitagawa; Tsukasa Koyama
Assessment of depressive symptoms in Japanese school children and adolescents using the Birleson Depression Self-Rating Scale.
International journal of psychiatry in medicine 2006;36(2):231-41.
2005: Ichiro Kusumi; Takuya Masui; Chihiro Kakiuchi; Katsuji Suzuki; Tatsuyuki Akimoto; Ryota Hashimoto; Hiroshi Kunugi; Tadafumi Kato; Tsukasa Koyama
Relationship between XBP1 genotype and personality traits assessed by TCI and NEO-FFI.
Neuroscience letters 2005;391(1-2):7-10.
2005: Hiroyuki Toda; Ichiro Kusumi; Yukiya Sasaki; Koichi Ito; Tsukasa Koyama
Relationship between plasma concentration levels of risperidone and clinical effects in the treatment of delirium.
International clinical psychopharmacology 2005;20(6):331-3.
2005: Yuji Kitaichi; Takeshi Inoue; Takeshi Izumi; Shin Nakagawa; Akiko Kato; Tsukasa Koyama
Subchronic milnacipran treatment increases basal extracellular noradrenaline concentrations in the medial prefrontal cortex of rats.
European journal of pharmacology 2005;520(1-3):37-42.
2005: Takeshi Inoue; Takeshi Izumi; Xiao Bai Li; Yuji Kitaichi; Shin Nakagawa; Tsukasa Koyama
Effect of a dopamine D1/5 receptor antagonist on haloperidol-induced inhibition of the acquisition of conditioned fear.
European journal of pharmacology 2005;519(3):253-8.
2005: Yuji Kitaichi; Takeshi Inoue; Shin Nakagawa; Takeshi Izumi; Tsukasa Koyama
Effect of milnacipran on extracellular monoamine concentrations in the medial prefrontal cortex of rats pre-treated with lithium.
European journal of pharmacology 2005;516(3):219-26.
2005: Takuya Masui; Ichiro Kusumi; Yoshito Takahashi; Tsukasa Koyama
Efficacy of carbamazepine against neuroleptic-induced akathisia in treatment with perospirone: case series.
Progress in neuro-psychopharmacology & biological psychiatry 2005;29(2):343-6.
2005: Mari Murashita; Ichiro Kusumi; Takeshi Inoue; Yoshito Takahashi; Hiroshi Hosoda; Kenji Kangawa; Tsukasa Koyama
Olanzapine increases plasma ghrelin level in patients with schizophrenia.
Psychoneuroendocrinology 2005;30(1):106-10.
2004: XiaoBai Li; Takeshi Inouei; Tomohiro Abekawai; Fang YiRui; Tsukasa Koyama
Effect of MS-153 on the acquisition and expression of conditioned fear in rats.
European journal of pharmacology 2004;505(1-3):145-9.
2004: Ichiro Kusumi; Takuya Masui; Chihiro Kakiuchi; Katsuji Suzuki; Tatsuyuki Akimoto; Ryota Hashimoto; Hiroshi Kunugi; Tadafumi Kato; Tsukasa Koyama
Lack of association between XBP1 genotype and calcium signaling in the platelets of healthy subjects.
Neuroscience letters 2004;369(1):1-3.
2004: Takeshi Inoue; Xiao Bai Li; Tomohiro Abekawa; Yuji Kitaichi; Takeshi Izumi; Shin Nakagawa; Tsukasa Koyama
Selective serotonin reuptake inhibitor reduces conditioned fear through its effect in the amygdala.
European journal of pharmacology 2004;497(3):311-6.
2004: Takeshi Izumi; Yuji Kitaichi; Shin Nakagawa; Takeshi Inoue; Tsukasa Koyama
Single footshock attenuates c-Fos expression induced by 5-HT2A receptor agonist (+/-)-2,5-dimethoxy-4-iodoamphetamine hydrochloride in rat brain.
Brain research 2004;1011(1):129-34.
2004: Takeshi Inoue; Takeshi Izumi; Xiao Bai Li; Ji Zhong Huang; Yuji Kitaichi; Shin Nakagawa; Tsukasa Koyama
[Biological basis of anxiety disorders and serotonergic anxiolytics].
Nihon shinkei seishin yakurigaku zasshi = Japanese journal of psychopharmacology 2004;24(3):125-31.
2004: Yuji Kitaichi; Takeshi Inoue; Shin Nakagawa; Takeshi Izumi; Tsukasa Koyama
Effect of co-administration of lithium and reboxetine on extracellular monoamine concentrations in rats.
European journal of pharmacology 2004;489(3):187-91.
2004: Tomohiro Abekawa; Yuji Kitaichi; Tetsuaki Matsuyama; Tsukasa Koyama
[Treatment of "the premonitory state of schizophrenia" with atypical antipsychotics].
Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica 2004;106(11):1357-72.
2004: Katsuji Suzuki; Ichiro Kusumi; Tatsuyuki Akimoto; Yuki Sasaki; Tsukasa Koyama
Effects of lithium and valproate on agonist-induced platelet intracellular calcium mobilization: relevance to myosin light chain kinase.
Progress in neuro-psychopharmacology & biological psychiatry 2004;28(1):67-72.
2003: Yukiya Sasaki; Tetsuaki Matsuyama; Seishiro Inoue; Tomoko Sunami; Takeshi Inoue; Kenzo Denda; Tsukasa Koyama
A prospective, open-label, flexible-dose study of quetiapine in the treatment of delirium.
The Journal of clinical psychiatry 2003;64(11):1316-21.
2003: Katsuji Suzuki; Ichiro Kusumi; Tatsuyuki Akimoto; Yuki Sasaki; Tsukasa Koyama
Altered 5-HT-induced calcium response in the presence of staurosporine in blood platelets from bipolar disorder patients.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2003;28(6):1210-4.
2003: Takeshi Inoue; Yuji Kitaichi; Tsukasa Koyama
[Treatment strategy of refractory depression and its presynaptic mechanism of action].
Nihon shinkei seishin yakurigaku zasshi = Japanese journal of psychopharmacology 2003;23(1):11-20.
2003: Katsuji Suzuki; Tsukasa Koyama
[Pharmacokinetics and drug interaction of antidepressants and anti-manic drugs].
Ryōikibetsu shōkōgun shirīzu 2003;(38):366-9.
2003: Teruaki Tanaka; Tsukasa Koyama
[Adverse effects of antidepressants and antimanics].
Ryōikibetsu shōkōgun shirīzu 2003;(38):362-5.
2003: Shin Nakagawa; Tsukasa Koyama
[Mechanism and clinical effects of drugs for mood disorder].
Ryōikibetsu shōkōgun shirīzu 2003;(38):358-61.
2003: Shin Nakagawa; Tsukasa Koyama
[Extrapyramidal syndrome].
Ryōikibetsu shōkōgun shirīzu 2003;(38):179-82.
2002: Yuji Odagaki; Tsukasa Koyama
Epinephrine- and thrombin-stimulated high-affinity GTPase activity in platelet membranes from patients with psychiatric disorders.
Psychiatry research 2002;112(2):111-9.
2002: Takeshi Izumi; Katsuji Suzuki; Takeshi Inoue; Xiao Bai Li; Yuji Maki; Ihoko Muraki; Yuji Kitaichi; Syogo Hashimoto; Tsukasa Koyama
Long-lasting change in 5-HT2A receptor-mediated behavior in rats after a single footshock.
European journal of pharmacology 2002;452(2):199-204.
2002: Ichiro Kusumi; Katsuji Suzuki; Yuki Sasaki; Kensuke Kameda; Tsukasa Sasaki; Tsukasa Koyama
Serotonin 5-HT(2A) receptor gene polymorphism, 5-HT(2A) receptor function and personality traits in healthy subjects: a negative study.
Journal of affective disorders 2002;68(2-3):235-41.
2002: Tomohiro Abekawa; M Honda; Kouichi Ito; Takeshi Inoue; Tsukasa Koyama
Effect of MS-153 on the development of behavioral sensitization to locomotion- and ataxia-inducing effects of phencyclidine.
Psychopharmacology 2002;160(2):122-31.
2002: Tomohiro Abekawa; Minoru Honda; Kouichi Ito; Takeshi Inoue; Tsukasa Koyama
Effect of MS-153 on the development of behavioral sensitization to stereotypy-inducing effect of phencyclidine.
Brain research 2002;926(1-2):176-80.
2001: Kensuke Kameda; Teruaki Tanaka; J Miura; Ichiro Kusumi; Tsukasa Koyama
Effects of acute citalopram treatment on the methamphetamine-induced locomotor activity.
Progress in neuro-psychopharmacology & biological psychiatry 2001;25(8):1583-95.
2001: Xiao Bai Li; Takeshi Inoue; Syogo Hashimoto; Tsukasa Koyama
Effect of chronic administration of flesinoxan and fluvoxamine on freezing behavior induced by conditioned fear.
European journal of pharmacology 2001;425(1):43-50.
2001: Takeshi Inoue; Tsukasa Koyama
[Reversible inhibitor of MAO-A(RIMA)].
Nihon rinsho. Japanese journal of clinical medicine 2001;59(8):1530-4.
2001: Tsukasa Koyama; Takeshi Inoue
[Tricyclic antidepressant, tetracyclic antidepressant].
Nihon rinsho. Japanese journal of clinical medicine 2001;59(8):1513-7.
2001: Katsuji Suzuki; Ichiro Kusumi; Yuki Sasaki; Tsukasa Koyama
Serotonin-induced platelet intracellular calcium mobilization in various psychiatric disorders: is it specific to bipolar disorder?
Journal of affective disorders 2001;64(2-3):291-6.
2001: Yuji Odagaki; Tsukasa Koyama
Identification of galpha subtype(s) involved in gamma-aminobutyric acid(B) receptor-mediated high-affinity guanosine triphosphatase activity in rat cerebral cortical membranes.
Neuroscience letters 2001;297(2):137-41.
2001: Tomohiro Abekawa; T Ohmori; M Honda; Kouichi Ito; Tsukasa Koyama
Effect of low doses of L-NAME on methamphetamine-induced dopaminergic depletion in the rat striatum.
Journal of neural transmission (Vienna, Austria : 1996) 2001;108(11):1219-30.
2001: Kensuke Kameda; J Miura; Katsuji Suzuki; Ichiro Kusumi; Teruaki Tanaka; Tsukasa Koyama
Effects of lithium on dopamine D2 receptor expression in the rat brain striatum.
Journal of neural transmission (Vienna, Austria : 1996) 2001;108(3):321-34.
2001: Ihoko Muraki; Takeshi Inoue; Syogo Hashimoto; Takeshi Izumi; K Ito; Tsukasa Koyama
Effect of subchronic lithium treatment on citalopram-induced increases in extracellular concentrations of serotonin in the medial prefrontal cortex.
Journal of neurochemistry 2001;76(2):490-7.
2000: Takeshi Izumi; Takeshi Inoue; Nobuki Kitagawa; N Nishi; S Shimanaka; Y Takahashi; Ichiro Kusumi; Yuji Odagaki; Kenzo Denda; T Ohmori; Tsukasa Koyama
Open pergolide treatment of tricyclic and heterocyclic antidepressant-resistant depression.
Journal of affective disorders 2000;61(1-2):127-32.
2000: Ichiro Kusumi; Katsuji Suzuki; Yuki Sasaki; Kensuke Kameda; Tsukasa Koyama
Treatment response in depressed patients with enhanced Ca mobilization stimulated by serotonin.
Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology 2000;23(6):690-6.
2000: Yuji Maki; Takeshi Inoue; Takeshi Izumi; Ihoko Muraki; K Ito; Yuji Kitaichi; X Li; Tsukasa Koyama
Monoamine oxidase inhibitors reduce conditioned fear stress-induced freezing behavior in rats.
European journal of pharmacology 2000;406(3):411-8.
2000: N Nishi; Yuji Odagaki; Tsukasa Koyama
Pharmacological characterization of metabotropic glutamate receptor-mediated high-affinity GTPase activity in rat cerebral cortical membranes.
British journal of pharmacology 2000;130(7):1664-70.
2000: Takeshi Inoue; Takeshi Izumi; Yuji Maki; Ihoko Muraki; Tsukasa Koyama
Effect of the dopamine D(1/5) antagonist SCH 23390 on the acquisition of conditioned fear.
Pharmacology, biochemistry, and behavior 2000;66(3):573-8.
2000: Tomohiro Abekawa; T Ohmori; Kouichi Ito; Tsukasa Koyama
D1 dopamine receptor activation reduces extracellular glutamate and GABA concentrations in the medial prefrontal cortex.
Brain research 2000;867(1-2):250-4.
2000: H Honma; M Kohsaka; N Fukuda; R Kobayashi; S Sakakibara; Tsukasa Koyama
Differences in electroencephalogram power densities between genuine narcolepsy and secondary narcolepsy.
Psychiatry and clinical neurosciences 2000;54(3):326-7.
2000: Kouichi Ito; T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
The role of benzodiazepine receptors in the acquisition and expression of behavioral sensitization to methamphetamine.
Pharmacology, biochemistry, and behavior 2000;65(4):705-10.
2000: Kensuke Kameda; Ichiro Kusumi; Katsuji Suzuki; J Miura; Yuki Sasaki; Tsukasa Koyama
Effects of citalopram on dopamine D2 receptor expression in the rat brain striatum.
Journal of molecular neuroscience : MN 2000;14(1-2):77-86.
2000: Yuji Odagaki; N Nishi; Tsukasa Koyama
Functional coupling of GABA(B) receptors with G proteins that are sensitive to N-ethylmaleimide treatment, suramin, and benzalkonium chloride in rat cerebral cortical membranes.
Journal of neural transmission (Vienna, Austria : 1996) 2000;107(10):1101-16.
2000: Ichiro Kusumi; Y Takahashi; Katsuji Suzuki; Kensuke Kameda; Tsukasa Koyama
Differential effects of subchronic treatments with atypical antipsychotic drugs on dopamine D2 and serotonin 5-HT2A receptors in the rat brain.
Journal of neural transmission (Vienna, Austria : 1996) 2000;107(3):295-302.
1999: Yuji Odagaki; N Nishi; S Nakagawa; Tsukasa Koyama
Activation of G proteins by neuropeptide Y and gamma-aminobutyric acid(B) receptor agonists in rat cerebral cortical membranes through distinct modes of action.
The Journal of pharmacology and experimental therapeutics 1999;291(3):1250-6.
1999: Ihoko Muraki; Takeshi Inoue; Syogo Hashimoto; Takeshi Izumi; K Ito; T Ohmori; Tsukasa Koyama
Effect of subchronic lithium carbonate treatment on anxiolytic-like effect of citalopram and MKC-242 in conditioned fear stress in the rat.
European journal of pharmacology 1999;383(3):223-9.
1999: Takeshi Izumi; Takeshi Inoue; K Tsuchiya; S Hashimoto; T Ohmori; Tsukasa Koyama
Effects of the benzodiazepine antagonist flumazenil on conditioned fear stress in rats.
Progress in neuro-psychopharmacology & biological psychiatry 1999;23(7):1247-58.
1999: Ichiro Kusumi; Tsukasa Koyama
Algorithms for the treatment of acute side effects induced by neuroleptics.
Psychiatry and clinical neurosciences 1999;53 Suppl():S19-22.
1999: Syogo Hashimoto; Takeshi Inoue; Tsukasa Koyama
Effects of conditioned fear stress on serotonin neurotransmission and freezing behavior in rats.
European journal of pharmacology 1999;378(1):23-30.
1998: Y Takahashi; Ichiro Kusumi; T Ishikane; S Matsubara; Tsukasa Koyama
In vivo occupation of dopamine D1, D2 and serotonin (5-HT)2A receptors by sertindole in the rat brain.
Journal of psychiatry & neuroscience : JPN 1998;23(3):157-62.
1998: Yuji Odagaki; N Nishi; H Ozawa; T Saito; N Takahata; Peter Riederer; Tsukasa Koyama
Measurement of receptor-mediated functional activation of G proteins in postmortem human brain membranes.
Brain research 1998;789(1):84-91.
1998: H Honma; R Kobayashi; Tsukasa Koyama
[Sleep-wake transition disorders].
Nihon rinsho. Japanese journal of clinical medicine 1998;56(2):422-6.
1998: Y Takahashi; Ichiro Kusumi; T Ishikane; Tsukasa Koyama
In vivo occupation of dopamine D1, D2 and serotonin2A receptors by novel antipsychotic drug, SM-9018 and its metabolite, in rat brain.
Journal of neural transmission (Vienna, Austria : 1996) 1998;105(2-3):181-91.
1998: Yuji Odagaki; N Nishi; Tsukasa Koyama
Receptor-mediated and receptor-independent activation of G-proteins in rat brain membranes.
Life sciences 1998;62(17-18):1537-41.
1997: Kouichi Ito; T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
Clonazepam prevents the development of sensitization to methamphetamine.
Pharmacology, biochemistry, and behavior 1997;58(4):875-9.
1997: Yuji Odagaki; N Nishi; Tsukasa Koyama
Lack of interfering effects of lithium on receptor/G protein coupling in human platelet and rat brain membranes.
Biological psychiatry 1997;42(8):697-703.
1997: Syogo Hashimoto; Takeshi Inoue; Tsukasa Koyama
Effects of the co-administration of 5-HT1A receptor antagonists with an SSRI in conditioned fear stress-induced freezing behavior.
Pharmacology, biochemistry, and behavior 1997;58(2):471-5.
1997: Tomohiro Abekawa; T Ohmori; Tsukasa Koyama
Tolerance to the neurotoxic effect of methamphetamine in rats behaviorally sensitized to methamphetamine or amphetamine.
Brain research 1997;767(1):34-44.
1997: Yuji Odagaki; N Nishi; Tsukasa Koyama
Effects of the wasp venom peptide, mastoparan, on GTP hydrolysis in rat brain membranes.
British journal of pharmacology 1997;121(7):1406-12.
1997: Tomohiro Abekawa; T Ohmori; Tsukasa Koyama
Effect of no synthesis inhibition on striatal dopamine release and stereotyped behavior induced by a single administration of methamphetamine.
Progress in neuro-psychopharmacology & biological psychiatry 1997;21(5):831-8.
1997: T Ohmori; Tomohiro Abekawa; Kouichi Ito; Tsukasa Koyama
[Context-dependent sensitization: reconsideration and a hypothesis].
Nihon shinkei seishin yakurigaku zasshi = Japanese journal of psychopharmacology 1997;17(2):61-8.
1997: T Ishikane; Ichiro Kusumi; R Matsubara; S Matsubara; Tsukasa Koyama
Effects of serotonergic agents on the up-regulation of dopamine D2 receptors induced by haloperidol in rat striatum.
European journal of pharmacology 1997;321(2):163-9.
1996: T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
The role of glutamate in the neurotoxic effects of methamphetamine.
Annals of the New York Academy of Sciences 1996;801():315-26.
1996: Takeshi Inoue; K Tsuchiya; Tsukasa Koyama
Effects of typical and atypical antipsychotic drugs on freezing behavior induced by conditioned fear.
Pharmacology, biochemistry, and behavior 1996;55(2):195-201.
1996: K Tsuchiya; Takeshi Inoue; Takeshi Izumi; Syogo Hashimoto; Tsukasa Koyama
Effects of footshock stress on regional brain monoamine metabolism and the acquisition of conditioned freezing in rats previously exposed to repeated methamphetamine.
Progress in neuro-psychopharmacology & biological psychiatry 1996;20(7):1239-50.
1996: Takeshi Inoue; Syogo Hashimoto; K Tsuchiya; Takeshi Izumi; T Ohmori; Tsukasa Koyama
Effect of citalopram, a selective serotonin reuptake inhibitor, on the acquisition of conditioned freezing.
European journal of pharmacology 1996;311(1):1-6.
1996: T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
The role of glutamate in behavioral and neurotoxic effects of methamphetamine.
Neurochemistry international 1996;29(3):301-7.
1996: K Tsuchiya; Takeshi Inoue; Tsukasa Koyama
Effect of repeated methamphetamine pretreatment on freezing behavior induced by conditioned fear stress.
Pharmacology, biochemistry, and behavior 1996;54(4):687-91.
1996: Yuji Odagaki; N Nishi; Tsukasa Koyama
Functional coupling between metabotropic glutamate receptors and G proteins in rat brain membranes.
European journal of pharmacology 1996;300(1-2):151-4.
1996: Takeshi Izumi; Takeshi Inoue; K Tsuchiya; Syogo Hashimoto; T Ohmori; Tsukasa Koyama
Effect of the selective CCKB receptor antagonist LY288513 on conditioned fear stress in rats.
European journal of pharmacology 1996;300(1-2):25-31.
1996: Takeshi Inoue; K Tsuchiya; Tsukasa Koyama
Serotonergic activation reduces defensive freezing in the conditioned fear paradigm.
Pharmacology, biochemistry, and behavior 1996;53(4):825-31.
1996: Takeshi Inoue; Tsukasa Koyama
Effects of acute and chronic administration of high-dose corticosterone and dexamethasone on regional brain dopamine and serotonin metabolism in rats.
Progress in neuro-psychopharmacology & biological psychiatry 1996;20(1):147-56.
1996: Tomohiro Abekawa; T Ohmori; Tsukasa Koyama
Effects of nitric oxide synthesis inhibition on methamphetamine-induced dopaminergic and serotonergic neurotoxicity in the rat brain.
Journal of neural transmission (Vienna, Austria : 1996) 1996;103(6):671-80.
1995: T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
Scopolamine prevents augmentation of stereotypy induced by chronic methamphetamine treatment.
Psychopharmacology 1995;121(2):158-63.
1995: T Miyamoto; M Kohsaka; J Katayama; H Honma; R Kobayashi; S Kohsaka; H Okuhara; Tsukasa Koyama
Evaluation of semantic processing in patients with temporal lobe epilepsy using event-related potential.
Psychiatry and clinical neurosciences 1995;49(3):S237-9.
1995: Tomohiro Abekawa; T Ohmori; Tsukasa Koyama
Effects of nitric oxide (NO) synthesis inhibition on the development of supersensitivity to stereotypy and locomotion stimulating effects of methamphetamine.
Brain research 1995;679(2):200-4.
1995: Ichiro Kusumi; T Ohmori; M Kohsaka; M Ito; H Honma; Tsukasa Koyama
Chronobiological approach for treatment-resistant rapid cycling affective disorders.
Biological psychiatry 1995;37(8):553-9.
1995: Ichiro Kusumi; S Matsubara; Y Takahashi; T Ishikane; Tsukasa Koyama
Characterization of [3H]clozapine binding sites in rat brain.
Journal of neural transmission. General section 1995;101(1-3):51-64.
1995: Ichiro Kusumi; T Ishikane; S Matsubara; Tsukasa Koyama
Long-term treatment with haloperidol or clozapine does not affect dopamine D4 receptors in rat frontal cortex.
Journal of neural transmission. General section 1995;101(1-3):231-5.
1995: T Ohmori; Tomohiro Abekawa; Tsukasa Koyama
Scopolamine prevents the development of sensitization to methamphetamine.
Life sciences 1995;56(14):1223-9.
1994: Tomohiro Abekawa; T Ohmori; Tsukasa Koyama
Effect of NO synthase inhibition on behavioral changes induced by a single administration of methamphetamine.
Brain research 1994;666(1):147-50.
1994: T Inoue; K Tsuchiya; Tsukasa Koyama
Regional changes in dopamine and serotonin activation with various intensity of physical and psychological stress in the rat brain.
Pharmacology, biochemistry, and behavior 1994;49(4):911-20.
1994: Yuji Odagaki; Tsukasa Koyama; I Yamashita
Platelet pertussis toxin-sensitive G proteins in affective disorders.
Journal of affective disorders 1994;31(3):173-7.
1994: T Ohmori; T Abekawa; A Muraki; Tsukasa Koyama
Competitive and noncompetitive NMDA antagonists block sensitization to methamphetamine.
Pharmacology, biochemistry, and behavior 1994;48(3):587-91.
1994: Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Effect of mood stabilizing agents on agonist-induced calcium mobilization in human platelets.
Journal of psychiatry & neuroscience : JPN 1994;19(3):222-5.
1994: T Abekawa; T Ohmori; Tsukasa Koyama
Effects of repeated administration of a high dose of methamphetamine on dopamine and glutamate release in rat striatum and nucleus accumbens.
Brain research 1994;643(1-2):276-81.
1994: Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Serotonin-induced platelet intracellular calcium mobilization in depressed patients.
Psychopharmacology 1994;113(3-4):322-7.
1993: Y Odagaki; Tsukasa Koyama; I Yamashita
Pharmacological characterization of epinephrine-stimulated GTPase activity in human platelet membranes.
Biochemical pharmacology 1993;46(11):2021-8.
1993: Tsukasa Koyama; M Abe; S Matsubara; I Yamashita
Iprindole treatment increases extracellular concentrations of NA nd DA in the medial prefrontal cortex: evidence that iprindole increases availability of synaptic catecholamine in vivo.
The Japanese journal of psychiatry and neurology 1993;47(2):424-5.
1993: T Inoue; Tsukasa Koyama; K Tsuchiya; I Yamashita
The potentiation of serotonergic activity reduces conditioned fear-induced freezing behavior.
The Japanese journal of psychiatry and neurology 1993;47(2):420-1.
1993: T Ohmori; Tsukasa Koyama; T Inoue; S Matsubara; I Yamashita
B-HT 920, a dopamine D2 agonist, in the treatment of negative symptoms of chronic schizophrenia.
Biological psychiatry 1993;33(10):687-93.
1993: S Matsubara; R Matsubara; Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Dopamine D1, D2 and serotonin2 receptor occupation by typical and atypical antipsychotic drugs in vivo.
The Journal of pharmacology and experimental therapeutics 1993;265(2):498-508.
1993: T Inoue; Tsukasa Koyama; I Yamashita
Effect of conditioned fear stress on serotonin metabolism in the rat brain.
Pharmacology, biochemistry, and behavior 1993;44(2):371-4.
1993: M Nakayama; Tsukasa Koyama; I Yamashita
Long-lasting decrease in dopamine uptake sites following repeated administration of methamphetamine in the rat striatum.
Brain research 1993;601(1-2):209-12.
1993: T Inoue; Tsukasa Koyama; A Muraki; I Yamashita
Effects of single and repeated immobilization stress on corticotropin-releasing factor concentrations in discrete rat brain regions.
Progress in neuro-psychopharmacology & biological psychiatry 1993;17(1):161-70.
1993: Y Odagaki; Tsukasa Koyama; I Yamashita
Competitive vs. noncompetitive blockade of epinephrine-sensitive GTPase activity in human platelets.
Life sciences 1993;53(25):PL427-31.
1993: T Ohmori; Tsukasa Koyama; A Muraki; I Yamashita
Competitive and noncompetitive N-methyl-D-aspartate antagonists protect dopaminergic and serotonergic neurotoxicity produced by methamphetamine in various brain regions.
Journal of neural transmission. General section 1993;92(2-3):97-106.
1992: Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Thrombin-induced platelet calcium mobilization is enhanced in bipolar disorders.
Biological psychiatry 1992;32(8):731-4.
1992: T Ohmori; F Nakamura; Tsukasa Koyama; I Yamashita
Amygdala kindling does not alter the N-methyl-D-aspartate receptor-channel complex which modulates dopamine release in the rat striatum and amygdala.
Brain research 1992;587(2):257-62.
1992: A Muraki; Tsukasa Koyama; M Nakayama; T Ohmori; I Yamashita
MK-801, a non-competitive antagonist of NMDA receptor, prevents methamphetamine-induced decrease of striatal dopamine uptake sites in the rat striatum.
Neuroscience letters 1992;136(1):39-42.
1992: Y Odagaki; Tsukasa Koyama; I Yamashita
Quantitative determination of pertussis toxin-sensitive G proteins using [32P]ADP-ribosylation in human platelet membranes: negative correlation with ages.
Life sciences 1992;50(24):1851-7.
1992: Tsukasa Koyama; I Yamashita
Biological markers of depression: WHO multi-center studies and future perspective.
Progress in neuro-psychopharmacology & biological psychiatry 1992;16(6):791-6.
1992: Y Odagaki; Tsukasa Koyama; I Yamashita
Influence of long-term lithium treatment on 5-hydroxytryptamine-mediated stimulation of adenylate cyclase in guinea-pig hippocampus.
Archives internationales de pharmacodynamie et de thérapie 1992;315():22-9.
1991: Y Odagaki; Tsukasa Koyama; I Yamashita
Lithium does not alter ADP-ribosylation of Gi/Go catalyzed by pertussis toxin in rat brain.
Pharmacology & toxicology 1991;69(5):355-60.
1991: Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Serotonin-stimulated Ca2+ response is increased in the blood platelets of depressed patients.
Biological psychiatry 1991;30(3):310-2.
1991: Y Odagaki; Tsukasa Koyama; S Matsubara; I Yamashita
Effects of lithium on the beta-adrenergic receptor-adenylate cyclase system in rat cerebral cortical membranes.
Japanese journal of pharmacology 1991;55(4):407-14.
1991: Y Odagaki; Tsukasa Koyama; I Yamashita
Effects of chronic treatment with lithium and antidepressants on [3H]forskolin binding to rat cerebral cortical membranes.
The Japanese journal of psychiatry and neurology 1991;45(1):125-6.
1991: Ichiro Kusumi; Tsukasa Koyama; I Yamashita
Effect of various factors on serotonin-induced Ca2+ response in human platelets.
Life sciences 1991;48(25):2405-12.
1991: Y Odagaki; Tsukasa Koyama; I Yamashita
Effects of long-term treatment with lithium and antidepressants on [3H]forskolin binding to rat cerebral cortical membranes.
Progress in neuro-psychopharmacology & biological psychiatry 1991;15(5):709-16.
1991: Y Odagaki; Tsukasa Koyama; I Yamashita
No alterations in the 5-HT1A-mediated inhibition of forskolin-stimulated adenylate cyclase activity in the hippocampal membranes from rats chronically treated with lithium or antidepressants.
Journal of neural transmission. General section 1991;86(2):85-96.
1991: T Ohmori; Tsukasa Koyama; I Yamashita
Measurement of endogenous dopamine and norepinephrine release from superfused slices of rat prefrontal cortex in vitro: modulation by D2 and alpha-2 presynaptic receptors.
Life sciences 1991;48(3):283-9.
1990: Y Odagaki; Tsukasa Koyama; S Matsubara; R Matsubara; I Yamashita
Effects of chronic lithium treatment on serotonin binding sites in rat brain.
Journal of psychiatric research 1990;24(3):271-7.
1989: H Mori; M Mikuni; Tsukasa Koyama; I Yamashita
Epinephrine stimulates inositol phospholipid metabolism by activating alpha-2 adrenergic receptors in human platelets.
Life sciences 1989;44(11):741-7.