Takashi Ochiai

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Crocin is a pharmacologically active component of Crocus sativus L. (saffron) that has been used in traditional Chinese medicine. In a previous study, we demonstrated that crocin inhibits apoptosis in PC-12 cells by affecting the function of tumor necrosis factor-alpha. In this study, we found that depriving cultured PC-12 cells of serum/glucose causes a(More)
Crocin is a pharmacologically active component of Crocus sativus L. (saffron) used in traditional Chinese medicine. We report here the effects of crocin on neuronally differentiated pheochromocytoma (PC-12) cells deprived of serum/glucose. Depriving the PC-12 cells of serum/glucose caused peroxidation of their cell membrane lipids and decreased(More)
Magnesium-dependent neutral sphingomyelinase (N-SMase) present in plasma membranes is an enzyme that can be activated by stress in the form of inflammatory cytokines, serum deprivation, and hypoxia. The design of small molecule N-SMase inhibitors may offer new therapies for the treatment of inflammation, ischemic injury, and cerebral infarction. Recently,(More)
Plasminogen activator inhibitor-1 is a serpin that regulates the activities of plasminogen activators. However, its physiological roles in the CNS are incompletely understood. We have found that plasminogen activator inhibitor-1 has a novel biological function in the CNS: the contribution to survival of neurites on neurons. PC-12 cells treated with nerve(More)
This paper proposes an implementation for switching median filters using counter propagation networks. The proposed filter consists of an impulse detector based on the counter propagation networks and a median filter. The median filter only removes the impulsive noise marked by the impulse detector and isn't applied to the other pixels. By using the(More)
BACKGROUND Coordinated movement in social animal groups via social learning facilitates foraging activity. Few studies have examined the behavioral cause-and-effect between group members that mediates this social learning. METHODOLOGY/PRINCIPAL FINDINGS We first established a behavioral paradigm for visual food learning using medaka fish and demonstrated(More)
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