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In the present study, we produced null-mutant mice of neuropsin, an extracellular matrix serine protease, to examine the neural functions of this protein particularly in the hippocampus. Golgi-Cox impregnation and Nissl-staining revealed morphological change of cell soma in the mutant mice compared to wild-type mice. However, Golgi-Cox impregnation revealed(More)
Neuropsin mRNA expression was analyzed and mapped in the mouse brains after kindling epileptogenesis by using in situ hybridization histochemistry. Dynamic increases of the neuropsin mRNA were observed in the layer II of prelimbic, somatosensory, auditory, perirhinal, entorhinal, and piriform cortices in an activity-dependent manner, though no neuropsin(More)
In our previous study, we found a novel gene encoding a serine protease termed neuropsin (NP) which exhibited activity-dependent gene expression or repression in the mouse hippocampus (Chen et al., 1995). In the present study, we examined the ontogeny of NP mRNA expression by in situ hybridization in the brain. Weak hybridization signals were also observed(More)
BACKGROUND Canine hemangiosarcoma (HSA) is a malignant tumor with poor long-term prognosis due to development of metastasis despite aggressive treatment. The phosphatidyl-inositol-3 kinase/Akt/mammalian target of rapamycin (PI3K/Akt/mTOR) pathway is involved in its endothelial pathologies; however, it remains unknown how this pathway plays a role in canine(More)
Gliomas are the most common primary brain tumors in adults and have a poor prognosis. Galectin-3 is a β-galactosidase-binding lectin which is important in pre-mRNA splicing, regulation of cell proliferation, cell adhesion and apoptosis. Although galectin-3 has been shown as a glioma related marker and expression of galectin-3 has been reported to correlate(More)
BACKGROUND Gastric metastasis from osteosarcoma is very rare and its clinical features are not well recognized. CASE PRESENTATION A 73-year-old man was diagnosed with osteosarcoma and treated with four cycles of preoperative chemotherapy with ifosfamide and doxorubicin followed by wide resection. Two cycles of postoperative chemotherapy with ifosfamide(More)
Restorative proctocolectomy is recognized as the standard procedure for colitic cancer in patients with ulcerative colitis (UC). However, whether this represents the optimal procedure for UC patients with sporadic cancer remains questionable, as functional quality of life differs substantially between patients with proctocolectomy and partial resection.(More)
PURPOSE Since 2000, the incidence of ulcerative colitis (UC) in patients over 60 years old has been rapidly increasing. We reviewed our surgical experience of elderly patients with UC treated at our hospital. METHODS Patients aged 60 years or older at the time of surgery were defined as "elderly". The medical records of all elderly patients who underwent(More)
Canine hepatozoonosis is a worldwide protozoal disease caused by Hepatozoon canis and Hepatozoon americanum and is transmitted by ixodid ticks, Rhipicephalus and Amblyomma spp., respectively. H. canis infection is widespread in Africa, Europe, South America, and Asia, including Japan. The objective of this study was to study the distribution pattern and(More)
OBJECTIVES Oxygen tension is an important component of microenvironment for the differentiation of embryonic stem cells including neural lineage. However, the comprehensive influence of hypoxia on neural differentiation during embryonic neural development has not yet been examined. METHODS In this study, we investigated the effect of low oxygen levels (5%(More)