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Articles by T Matsumura
Total Records ( 4 ) for T Matsumura
  T Miyagawa , M Tsutsumi , T Matsumura , N Kawazoe , S Ishikawa , T Shimokama , N Miyanaga and H. Akaza

Elastography is a technique for detecting the stiffness of tissues. We applied elastography for the diagnosis of prostate cancer and evaluated the usefulness of elastography for prostate biopsy.


The subjects of this study were 311 patients who underwent elastography during prostate needle biopsy at Hitachi General Hospital. Strain images obtained during compression of the prostate tissue were displayed on a monitor and recorded on the computer. The elastographic moving images (EMI) were evaluated retrospectively. The evaluable images and biopsy results were compared in terms of the feasibility and accuracy.


The median patient age was 67 years (range 50–85 years), the median serum level of prostate-specific antigen was 8.4 ng/ml (range 0.3–82.5 ng/ml) and the median prostate volume was 42.6 ml (range 12–150 ml). Among the 311 patients, prostate cancer was detected in 95 patients (30%) by biopsy. The diagnostic sensitivity was 37.9% for digital rectal examination (DRE) and 59.0% for transrectal ultrasonography (TRUS), whereas it was 72.6% for elastography and 89.5% for the combination of TRUS and elastography. Elastography-positive EMIs with negative biopsies were eventually determined to be due to benign prostatic hyperplasia.


Elastography has a significantly higher sensitivity for the detection of prostate cancer than the conventionally used examinations including DRE and TRUS. It is a useful real-time diagnostic method because it is not invasive, and simultaneous evaluation is possible while performing TRUS.

  Y Kodama , M Takita , S Kawagoe , S Hirahara , Y Kimura , S Onozawa , T Wada , K Nakano , M Kami , T Matsumura and K. Yuji

There is a lack of sufficient information on the employment of home care for the treatment of hematologic malignancies.


We provided home care to 580 patients from 1 January through 31 October 2007. Patients with hematologic malignancies were selected from these 580 patients; subsequently, by reviewing their medical records.


The main clinical condition in 15 (2.6%) of 580 patients was hematologic malignancies. The median age of the patients was 78 years (range, 64–92). Of the 15 patients, 12 showed a performance status (PS) of 3–4, and the condition of 6 patients was complicated with dementia. Food intake via the oral route was possible in 14 patients. These patients were administered palliative care. Among the seven patients who required pain control, four had been opioid users; however, none had used anticancer drugs for pain relief. Furthermore, three patients received blood transfusion. Although three patients developed severe complications (acute appendicitis, pneumonia and hyperglycemia), we were able to treat all cases adequately. Eight patients died at home due to aggravation of the primary diseases. The remaining seven patients were transferred to other hospitals for the treatment of complications or for the convenience of their respective families.


Even patients with hematologic malignancies could be candidates for home care if their underlying diseases are slowly progressive, and they can sustain themselves by oral intakes. Dementia and poor PS are not contraindicated to it.

  T Matsumura , J Kawamura Tsuzuku , T Yamamoto , K Semba and J. i. Inoue

Tumour necrosis factor receptor-associated factor (TRAF)-interacting protein with a forkhead-associated domain (TIFA) activates TRAF6 to induce NF-B activation. TIFA-related protein, TIFAB, is highly expressed in the spleen and inhibits TIFA-mediated TRAF6 activation. However, little is known about cell types that express TIFAB and its function in those cells. Here, we show that TIFAB is mainly expressed in B cells rather than T cells in the spleen and that the expression level was much higher in dendritic cells (DCs) and macrophages than that in splenic lymphocytes. TIFAB expression was downregulated when B cells, DCs or macrophages were stimulated by TRAF6-mediated proliferative or maturation signals including those emanating from CD40, sIgM and TLRs. Furthermore, microinjection experiments using NIH3T3 cells revealed that TIFAB inhibited entry into the S phase of the cell cycle. Our results suggest that TIFAB could act as a negative regulator of the TRAF6-induced cellular function such as B cell proliferation and maturation of DCs and macrophages.

  Y Sugawara , T Matsumura , Y Takegahara , Y Jin , Y Tsukasaki , M Takeichi and Y. Fujinaga

Botulinum neurotoxin's nontoxic HA protein binds E-cadherin to disrupt cell–cell adhesion in a species-specific manner.

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