Hiroshi Matsushima

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Phosphoinositide-specific phospholipase C (PLC) is a key enzyme in signal transduction. It was previously demonstrated that an antibody to an isozyme of PLC, PLC-delta, produces intense staining of neurofibrillary tangles (NFT), the neurites surrounding senile plaque (SP) cores and neuropil threads in the brains of patients with Alzheimer's disease (AD).(More)
We examined protein kinase C (PKC) activity in Ca2+-dependent PKC (Ca2+-dependent PKC activities) and Ca2+-independent PKC (Ca2+-independent PKC activities) assay conditions in brains from Alzheimer's disease (AD) patients and age-matched controls. In cytosolic and membranous fractions, Ca2+-dependent and Ca2+-independent PKC activities were significantly(More)
Introduction. The incidence of endometriosis affecting skin tissue represents only 0.5-1.0% of all endometriosis cases. A malignancy in the abdominal wall arising from endometriosis following cesarean section is even rarer; only 21 cases have previously been reported. The therapeutic strategy has not been determined because of the limited cases. We report a(More)
The present article focuses on our studies on the metabolism of the inositol phospholipids in Alzheimer disease (AD). The phospholipase C (PLC) isozyme, PLC-delta 1, was abnormally accumulated in neurofibrillary tangles (NFT), the neurites surrounding senile plaque cores, and neuropil threads in AD brains. Anti-PLC-delta 1 antibody marked the same(More)
AF-6/afadin plays an important role in the formation of adherence junctions. In breast and colon cancer, loss of AF-6/afadin induces cell migration and cell invasion. We aimed to elucidate the role of AF-6/afadin in human endometrial cancer. Morphology and AF-6/afadin expression in endometrial cancer cell lines was investigated by 3-dimensional culture. We(More)
Phosphoinositide-specific phospholipase C (PLC) is a key enzyme in signal transduction. We have previously demonstrated that an antibody to an isozyme of PLC, PLC-delta, produced intense staining of neurofibrillary tangles in the brains of patients with Alzheimer's disease. In the present study, we investigated the protein level and activity of this enzyme(More)
Alzheimer's disease (AD) has been suggested to be a systemic disease, and signal transduction abnormalities have been reported in non-neuronal AD cells. We have previously quantified the protein kinase C (PKC) subtypes in AD and control brains using a two-site enzyme immunoassay (EIA), and have shown that type II PKC levels were significantly reduced in the(More)
Using a two-site enzyme immunoassay, we determined the content of type II protein kinase C (PKC) in human platelets from 24 donors of various ages without any neurological, hematological or malignant disorders. The content of type II PKC in the membranous fraction was positively correlated with aging. The content of PKC in the cytosolic fraction tended to(More)
Primary vulvar adenocarcinomas are very rare. We describe the rare case of primary vulvar apocrine adenocarcinoma, a histologically rare subtype of vulvar adenocarcinoma. A 57-year-old Japanese woman presented with an enlarging vulvar mass. A dark-red, hemorrhagic, ulcerated tumor was on the right side of the anterior labial commissure measuring(More)
Estrogen-related receptor (ERR)α presents structural similarities with estrogen receptor (ER)α. However, it is an orphan receptor not binding to naturally occurring estrogens. This study was designed to investigate the role of ERRα in endometrial cancer progression. Immunohistochemistry analysis on 50 specimens from patients with endometrial cancer showed(More)