Koujiro Futagami

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Ischemia-induced hyperactivity is recognized several hours after both common carotid arteries' occlusion for 5 min in Mongolian gerbils, and it continues for at least 7 days. The aim of this study is to investigate the possible mechanisms of this abnormal behavior. Methamphetamine (MAP) (1 and 3 mg /kg) was administered for 7 days and imipramine (IMP) (5(More)
RATIONALE Acute physical dependence refers to the withdrawal syndrome precipitated by an opioid antagonist administered several hours after either a single dose or a short-term infusion of an opioid agonist. OBJECTIVES We examined the mechanism of nicotine-induced attenuation of naloxone-precipitated withdrawal syndrome when used to produce an aversive(More)
Brain pericytes are involved in neurovascular dysfunction, neurodegeneration and/or neuroinflammation. In the present study, we focused on the proinflammatory properties of brain pericytes to understand their participation in the induction of inflammation at the neurovascular unit (NVU). The NVU comprises different cell types, namely, brain microvascular(More)
The conversion of cellular prion protein (PrP(C)) to its protease-resistant isoform is involved in the pathogenesis of prion disease. Although PrP(C) is a ubiquitous glycoprotein that is present in various cell types, the physiological role of PrP(C) remains obscure. The present study aimed to determine whether PrP(C) mediates migration of brain(More)
Recently, 3-hydroxy-3-methyl glutaryl coenzyme A (HMG-CoA) reductase inhibitors were reported to induce neurite outgrowth in vitro. However, the mechanism underlying this effect remains unclear. Cellular prion protein (PrP(C)) is a ubiquitous glycoprotein present on the surfaces of various cells, including neurons, and is suggested to be involved in neurite(More)
The effects of valproate (VPA), zonisamide (ZNS), and phenytoin (PHT) on flurothyl (FE)-induced generalized seizure were investigated in mice. In the FE kindling model, eight daily FE-induced generalized clonic seizures followed by a 28-day stimulation-free interval converted the type of seizure expressed in response to FE from clonic to tonic. In an acute(More)
We investigated the characteristics of the flurothyl-induced seizures and the effects of antiepileptic drugs on the flurothyl-induced seizure model in a previously untested Mongolian gerbil species. Mongolian gerbils demonstrated tonic extension immediately after or within 1 min after the appearance of clonic convulsion. Very high amplitude spike waves(More)
The purpose of this paper is to examine functional regions of the completely sequenced DNA data of Ti and Ri plasmids, based on codon usage similarity. It is shown that a successful classification of functional regions is obtained by using statistical measures of codon usage dissimilarity and correspondence analysis.
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