Protective Effect of GTS-21, a Novel Nicotinic Receptor Agonist, on Delayed Neuronal Death Induced by Ischemia in Gerbils

The Japanese Journal of Pharmacology

Jyunji Yamamoto²  Hidekazu Miyake²  Hiroshi Watanabe¹  Masato Nanri² 

[1] Department of Pharmacology, Research Institute for Wakan-Yaku (Oriental Medicines), Toyama Medical and Pharmaceutical University;Department of Pharmacology, Taiho Pharmaceutical Co., Ltd.

关键词: GTS-21;    THA;    Ischemia;    Mongolian gerbil;    Nicotinic agonist;   

DOI  :  10.1254/jjp.76.23

学科分类：药理学

来源: Nihon Yakuri Gakkai Henshuubu / Japanese Pharmacological Society

【 摘 要 】

References(23)Cited-By(32)The neuroprotective effects of GTS-21 [3-(2, 4-dimethoxybenzylidene)-anabaseine dihydrochloride] were studied and compared with those of nicotine, 9-amino-1, 2, 3, 4-tetrahydroacridine hydrochloride hydrate (THA) and pentobarbital-Na (PB) using a cerebral ischemia model in Mongolian gerbils. The learning performance and memory retention were elucidated by a step-through passive avoidance task at 2 and 3 days after ischemia-reperfusion. In this task, the ischemia-operated gerbils showed impairment of learning performance and memory retention. Neuronal cell death in the hippocampal CA1 area was observed at 7 days after ischemia. When administered i.p. 30 min before ischemia, GTS-21 (5 mg/kg), (-)-nicotine (1.5 mg/kg), THA (5 mg/kg) and PB (50 mg/kg) significantly attenuated the impairment of passive avoidance performance and the neuronal cell death induced by the ischemia. When administered orally twice daily for 2 weeks prior to the ischemia, GTS-21 (10 mg/kg) significantly suppressed both amnesia and neuronal cell death, while (-)-nicotine (10 mg/kg) and THA (10 mg/kg) suppressed only the amnesia. These results suggest that GTS-21 exerts a protective activity on not only impairment of learning and memory but also delayed neuronal death and that the underlying mechanism of GTS-21 differs from that of nicotine or THA.

【 授权许可】

Unknown