Zhao Q, Murakami Y., Tohda M., Watanabe H., Matsumoto K. Preventive effect of Choto-san, a Kampo medicine, on transient ischemia-induced learning deficit is mediated by stimulation of muscarinic M1 but not nicotinic receptor. Biol. Pharm. Bull. 28(10): 1873-1878, 2005

Sukma M, Tohda M, Watanabe H, Matsumoto K. The mRNA expression differences of RNA editing enzymes in differentiated and undifferentiated NG108-15 cells. J. Pharmacol. Sci. 98: 467-470, 2005

Murakami Y., Zhao Q, Harada K., Tohda M., Watanabe H., Matsumoto K. Choto-san, a Kampo formula, improves chronic cerebral hypoperfusion-induced spatial learning deficit via stimulation of muscarinic M1 receptor. Pharmacol. Biochem. Behav. 81: 616-625, 2005

Matsumoto K., Morhishige R., Tohda M., Murakami Y., Takayama H., Aimi N., Sakakibara I., Watanabe H. Suppressive effects of isorhynchophylline on 5-HT2A receptor function in the brain: Behavioral and electrophysiological study. Eur. J. Pharmacol. 517(3): 191-199, 2005

Mai T.T.N., Awale S., Tezuka Y.,  Shim L. Faisal Haider Zaidi, Ueda J.-Y., Tran Q.R., Murakami Y., Matsumoto K., Kadota S. Hypouricemic effects of acacetin and 4,5-O-dicaffeoylquinic acid methyl ester on serum uric acid levels in potassium oxonate-pretreated rats. Biol. Pharm. Bull. 28(12): 2231-2234, 2005

Mahakunakorn P., Tohda M., Matsumoto K., Murakami Y., Watanabe H. Effects of Choto-san and its related constituents on endogenous antioxidant systems. Biol. Pharm. Bull. 28(1): 53-57, 2005

Li X., Matsumoto K., Murakami Y., Tezuka Y., Wu Y., Kadota S. Neuroprotective effects of Polygonum multiflorum on nigrostriatal dopaminergic degeneration induced by paraquat and maneb in mice. Pharmacol Biochem Behav. 82(2): 345-352, 2005

Leewanicha P., Tohda M., Takayama H., Sophasan S., Watanabe H., Matsumoto K. Corymine potentiates NMDA-induced currents in Xenoupus oocytes expressing NR1a/NR2B glutamate receptors. J Pharmacol Sci. 98: 58-65, 2005

Hussein G, Goto H., Oda S., Iguchi T., Sankawa U., Matsumoto K., Watanabe H. Antihypertensive potential and mechanism of action of astaxanthin: II. Vascular reactivity and hemorheology in spontaneous hypertensive rats.  Biol. Pharm. Bull. 28(6): 967-971, 2005

Huong N.T.T., Matsumoto K., Murakami Y., Watanabe H. Social isolation stress-induced oxidative brain membrane damage and its modulation by majonoside-R2, a Vietnamese ginseng saponin. Biol. Pharm. Bull. 28(8):1389-1393, 2005

Hayashi H., Tohda M., Watanabe H., Murakami Y., Matsumoto K. The effects of Choto-san on the mRNA Expression of Alzheimer's Disease Related Factors in the Permanent Ischemic Rat Brain. Biol. Pharm. Bull. 28(4): 744-746, 2005