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brain ischemia/escopolamina
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WEB 1881 FU ameliorates impairment of working memory induced by scopolamine and cerebral ischemia in the three-panel runway task.
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Using a repeated acquisition procedure in a 3-panel runway apparatus, the effect of WEB 1881 FU on impairment of working memory produced either by scopolamine or by cerebral ischemia was investigated in rats and compared with those of aniracetam and Ca hopantenate. Intraperitoneal injection of
Minaprine improves impairment of working memory induced by scopolamine and cerebral ischemia in rats.
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Using a repeated acquisition procedure in a three-panel runway apparatus, the effects of minaprine on the impairment of working memory produced by scopolamine, ethylcholine aziridinium ion (AF64A) or cerebral ischemia were investigated in rats. Minaprine (3.2-32 mg/kg IP) as well as idebenone
Effect of S-adenosyl-L-methionine on impairment of working memory induced in rats by cerebral ischemia and scopolamine.
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A repeated acquisition procedure in a 3-panel runway apparatus was used to investigate the effects to S-adenosyl-L-methionine (SAM) on impairment of working memory produced either by cerebral ischemia or by scopolamine in rats. Cerebral ischemia (2-10 min) produced duration-dependent increases in
Protective effects of scopolamine and penehyclidine hydrochloride on acute cerebral ischemia-reperfusion injury after cardiopulmonary resuscitation and effects on cytokines.
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The objective of this study was to investigate the protective effects of scopolamine and penehyclidine hydrochloride on acute cerebral ischemia-reperfusion injury after cardiopulmonary resuscitation, and the effect on cytokine levels. Eighty patients with cardiac arrest admitted to our hospital from
Cholinergic receptor blockade by scopolamine and mecamylamine exacerbates global cerebral ischemia induced memory dysfunction in C57BL/6J mice.
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Global cerebral ischemia/reperfusion (GCI/R) injury encompasses complex pathophysiological sequalae, inducing loss of hippocampal neurons and behavioural deficits. Progressive neuronal death and memory dysfunctions culminate from several different mechanisms like oxidative stress, excitotoxicity,
Effects of ginkgo biloba extract on impairment of learning induced by cerebral ischemia in mice.
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The effect of Ginkgo biloba extract (GbE) on cerebral ischemia induced by 10-min bilateral occlusion of the carotid arteries in mice was studied. Severe impairment of memory was apparent when the passive avoidance test was carried out 48 hr after bilaterally induced ischemia. When GbE at doses of 50
Comparison of the effects of bifemelane hydrochloride and indeloxazine hydrochloride on scopolamine hydrobromide-induced impairment in radial maze performance.
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The antiamnesic effects of bifemelane hydrochloride (bifemelane) and indeloxazine hydrochloride (indeloxazine) on radial maze performance in rats were assessed. This performance was dependent on working memory and spatial memory, without aversive electric stimuli. When administered alone, neither
Effects of ketanserin and mianserin on delayed neuronal death induced by cerebral ischemia in Mongolian gerbils.
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We examined whether ketanserin and mianserin, drugs with 5-HT2 receptor antagonistic effects, would have protective effects in Mongolian gerbils on delayed neuronal death induced by cerebral ischemia. When training and test sessions in the passive avoidance task were carried out 6 and 7 days after 3
Post-ischemic treatment with toki-shakuyaku-san (tang-gui-shao-yao-san) prevents the impairment of spatial memory induced by repeated cerebral ischemia in rats.
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Previously we have reported that Toki-shakuyaku-san (TSS) ameliorated the impairment of spatial memory induced by single cerebral ischemia (1 x 10 minutes) and scopolamine, a muscarinic receptor antagonist. In this experiment, we studied the effect of TSS on repeated cerebral ischemia (2 x 10
Effects of transient cerebral ischemia in gerbils on working memory performance in the delayed nonmatching to position task using a T-maze.
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To examine the working memory performance, gerbils were tested in the delayed nonmatching to position task using a T-maze, and the effects of cerebral ischemia on the performance were examined. There were no significant differences between gerbils and rats in the alternation performance without
Pentoxifylline treatment improves neurological and neurochemical deficits in rats subjected to transient brain ischemia.
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The possible neuroprotector effects of pentoxifylline (P), a methylxanthine derivative and phosphodiesterase inhibitor, were studied on male Wistar rats subjected to a model of transient brain ischemia. One group was treated, 1 h before ischemia (ISC) and 1 h after, with pentoxifylline (P), 50 and
PP2A ligand ITH12246 protects against memory impairment and focal cerebral ischemia in mice.
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ITH12246 (ethyl 5-amino-2-methyl-6,7,8,9-tetrahydrobenzo[b][1,8]naphthyridine-3-carboxylate) is a 1,8-naphthyridine described to feature an interesting neuroprotective profile in in vitro models of Alzheimer's disease. These effects were proposed to be due in part to a regulatory action on protein
A brief brain ischemia produces morphological damage of hippocampal CA1 pyramidal cells without affecting the sensitivities of psychoactive drugs in two types of discrete avoidance tasks in Mongolian gerbils.
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Effects of subcutaneous administration of psychoactive drugs: methamphetamine (0.13-1 mg/kg), chlorpromazine (0.5-2 mg/kg), physostigmine (0.05-0.2 mg/kg), scopolamine (0.031-0.5 mg/kg), pentobarbital (5-20 mg/kg), diazepam (0.5-2 mg/kg) and morphine (1.3-5 mg/kg) on discrete lever-press and shuttle
A selective M1 and M3 receptor antagonist, penehyclidine hydrochloride, prevents postischemic LTP: involvement of NMDA receptors.
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Our previous and other studies have confirmed that a selective M1 and M3 receptor antagonist, Penehyclidine hydrochloride (PHC), has neuroprotection activity in cerebral ischemia. However, the precise mechanisms of protection of PHC are still elusive. In this study we analyzed PHC-mediated
Protective effect of vinconate on ischemia-induced neuronal damage in the rat hippocampus.
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The protective effect of vinconate, a vinca alkaloid derivative, on ischemia-induced neuronal damage was investigated using a model of rat forebrain ischemia caused by occlusion of four vessels. Hippocampal cell loss was observed histologically and neurochemically 5 days after 10 min of ischemia.
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