Effect of TJ-23 on Scopolamine-Induced Deficit of Learning and Memory in Rats

Fujiwara, Michihiro; Iwasaki, Katsunori; Ogata, Tatsuhiko

doi:10.1007/978-1-4684-5847-3_77

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…TSS potentiates tremors induced by direct stimulation of acetylcholine receptors with oxotremorine (10). Neurochemical studies revealed that TSS could increase nicotine acetylcholine receptor number and norepinephrine content in the cerebral cortex, could suppress the decrease of cortical and hippocampal choline acetyltransferase activity and norepinehprine content, and improve memory related behavior in ovariectomized mice (11).…”

Section: Introductionmentioning

confidence: 99%

Determination of the Effectiveness of Components of the Herbal Medicine Toki-Shakuyaku-San and Fractions of Angelica acutiloba in Improving the Scopolamine-Induced Impairment of Rat’s Spatial Cognition in Eight-Armed Radial Maze Test

et al. 2004

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Abstract. The improving effects of various components of Toki-Shakuyaku-San (TSS) and fractions isolated from Angelica acutiloba Radix (Toki) on scopolamine-induced spatial memory impairment were investigated in eight-armed radial maze. The scopolamine-induced memory impairment was characterized by prominent increase of error choices in addition to decreased correct choices. Toki, Cnidium officinale Rhizoma (Senkyu), Poria cocos Hoelen (Bukuryo), Alisma orientale Rhizoma (Takusha), and Atractylodes lancea Rhizoma (Sojutsu) increased the correct choices, while only the Toki, Sojutsu, and Takusha decreased the error choices. No effect was produced by Paeonia lactiflora Radix (Shakuyaku). Investigation of effects of fractions isolated from Toki revealed that its activity mainly resided in the butanol layer and its contents of N-methyl-b-carboline-3-carboxamide and amines. Moreover, the alkaloid, internal and external solutions (containing poly-, di-, and monosaccharides) obtained by dialysis with Visking cellophane tubing also improved the memory. However, no improving properties were detected for methanol and hexanol layers, L-(-)-tryptophan, L-arginine, L-(-)-lysine, and choline chloride. The results showed that the TSS components could improve the reference and working memory impaired by scopolamine. The improving effect of TSS is produced greatly by the Toki component, the activity of which was greatly produced by the fraction extracted by butanol.

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Section: Introductionmentioning

confidence: 99%

Determination of the Effectiveness of Components of the Herbal Medicine Toki-Shakuyaku-San and Fractions of Angelica acutiloba in Improving the Scopolamine-Induced Impairment of Rat’s Spatial Cognition in Eight-Armed Radial Maze Test

et al. 2004

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Protective effect of Toki-shakuyaku-san on amyloidβ25-35-induced neuronal damage in cultured rat cortical neurons

et al. 2005

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Amyloid beta protein (Abeta) is the major component of senile plaques, the pathological hallmark of the neurodegeneration associated with Alzheimer's disease (AD). This study investigated the effect of Toki-shakuyaku-san (TSS), a traditional medicine, on Abeta25-35-induced neuronal death and lipid peroxidation assessed by measuring lactate dehydrogenase (LDH) and malondialdehyde (MDA), respectively. Abeta25-35 at 10 microM induced neuronal damage and increased the LDH and MDA. TSS at concentrations of 100 and 300 microg/mL significantly reduced the Abeta25-35-induced neuronal death and the lipid peroxidation. These results suggest that TSS has a protective effect against Abeta25-35-induced neuronal damage. TSS may be beneficial for the treatment of AD.

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Kamikihi‐to, a Kampo medicine, Ameliorates impairment of spatial memory in rats

Egashira

Manome

Kurauchi

et al. 2006

Phytotherapy Research

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The present study investigated the effects of Kamikihi-to (KKT), a Kampo medicine, on impairment of spatial memory in rats using an eight-arm radial maze task. Scopolamine (0.5 mg/kg, i.p.), a non-selective muscarinic receptor antagonist, and Delta(9)-tetrahydrocannabinol (THC; 6 mg/kg, i.p.), a principal psychoactive component of marihuana, each markedly impaired the spatial memory. KKT (1 and 3 mg/kg, p.o.) significantly improved the scopolamine-induced impairment of spatial memory. KKT (30 mg/kg, p.o.) also improved significantly the THC-induced impairment of spatial memory. Moreover, KKT (3 and 30 mg/kg, p.o.) enhanced tremors induced by oxotremorine, a muscarinic M(1) receptor agonist. Taken together these findings suggest that KKT is a useful drug for treating memory deficits.

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Effect of TJ-23 on Scopolamine-Induced Deficit of Learning and Memory in Rats

Cited by 4 publications

References 2 publications

Determination of the Effectiveness of Components of the Herbal Medicine Toki-Shakuyaku-San and Fractions of Angelica acutiloba in Improving the Scopolamine-Induced Impairment of Rat’s Spatial Cognition in Eight-Armed Radial Maze Test

Determination of the Effectiveness of Components of the Herbal Medicine Toki-Shakuyaku-San and Fractions of Angelica acutiloba in Improving the Scopolamine-Induced Impairment of Rat’s Spatial Cognition in Eight-Armed Radial Maze Test

Protective effect of Toki-shakuyaku-san on amyloidβ25-35-induced neuronal damage in cultured rat cortical neurons

Kamikihi‐to, a Kampo medicine, Ameliorates impairment of spatial memory in rats

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