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Tabata, Chiharu,Tabata, Rie,Nakano, Takashi Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.7
Malignant pleural mesothelioma (MPM), an aggressive malignant tumor of mesothelial origin associated with asbestos exposure, shows a limited response to conventional chemotherapy and radiotherapy. Therefore, the overall survival of MPM patients remains very poor. Progress in the development of therapeutic strategies for MPM has been limited. We recently reported that the calpain inhibitor, calpeptin exerted inhibitory effects on pulmonary fibrosis by inhibiting the proliferation of lung fibroblasts. In the present study, we examined the preventive effects of calpeptin on the cell growth of MPM, the origin of which is mesenchymal cells, similar to lung fibroblasts. Calpeptin inhibited the proliferation of MPM cells, but not mesothelial cells. It also prevented 1) the expression of angiopoietin (Ang)-1 and Tie-2 mRNA in MPM cells, but not mesothelial cells and 2) the Ang-1-induced proliferation of MPM cells through an NF-kB dependent pathway, which may be the mechanism underlying the preventive effects of calpeptin on the growth of MPM cells. These results suggest potential clinical use of calpeptin for the treatment of MPM.
Transient osteoporosis of the hip with a femoral neck fracture during follow-up: a case report
( Yusuke Tabata ),( Shuhei Matsui ),( Masabumi Miyamoto ),( Koichiro Omori ),( Yoichiro Tabata ),( Tokifumi Majima ) 영남대학교 의과대학 2023 Yeungnam University Journal of Medicine Vol.40 No.2
We report a case of transient osteoporosis of the hip with a femoral neck fracture found during follow-up. A 53-year-old man presented with left hip pain without trauma. The pain did not improve after 2 weeks and he was brought to our hospital by ambulance. Magnetic resonance imaging (MRI) of the left hip joint showed diffuse edema in the bone marrow, which was identified by low signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and increased signal intensity on short tau inversion recovery. This edema extended from the femoral head and neck to the intertrochanteric area. He was diagnosed with transient osteoporosis of the left hip. Rest gradually improved his pain; however, 3 weeks later, his left hip pain worsened without trauma. X-ray, computed tomography, and MRI results of the hip joint demonstrated a left femoral neck fracture, and osteosynthesis was performed. Differential diagnoses included avascular necrosis of the femoral head, infection, complex regional pain syndrome, rheumatoid arthritis, leukemia, and other cancers. Transient osteoporosis of the hip generally has a good prognosis with spontaneous remission within a few months to 1 year. However, a sufficient length of follow-up from condition onset to full recovery is necessary to avoid all probable complications such as fractures.
Extraction of Water-Soluble Porphyrin and Metalloporphyrins into Acetonitrile by Salting-out
Tabata, Masaaki,Kumamoto, Midori 한국분석과학회 1995 분석과학 Vol.8 No.4
A cationic water soluble porphyrin (5,10,15,20-tetrakis (l-methyl-pyridinium-4-yl)porphyrin, $H_2tmpyp^{4+}$) and its metalloporphyrins (MP) were easily extracted into acetonitrile separated by addition of sodium chloride ($4mol\;dm^{-3}$) in the presence of sodium perchlorate, where M denotes $Zn^{2+}$, $Cu^{2+}$, $Co^{3+}$, $Fe^{3+}$, and $Mn^{3+}$ and $P^{2-}$ is porphyrinate ion. The extracted ion-pair complexes were completely dissociated to $[MP(ClO_4)_3]^+$, and $[MP(ClO_4)_2]^{2+}$. The extraction and the dissociation constants were determined by taking into account of the partition constant of sodium perchlorate ($K_D=1.82{\pm}0.01$). The chemical properties of the separated acetonitrile phase as $E_{T(30)}$ and $D_{II,I}$ were determined and compared with other water miscible solvents (acetone, actonitrile, 1,4-dioxane, tetrahydrofuran, 1-propanol and 2-propanol). Furthermore, a sensitive and selective method was proposed for the determination of a subnanogram amount of copper(II) in natural water samples by using the present salting-out method and the porphyrins.
Direct-multicasting Satellite Communications System
Masaaki, Tabata,Toshihiro, Tsuchida,Hiroshi, Kazama 통신위성우주산업연구회 2004 Joint Conference on Satellite Communications Vol.2004 No.-
Satellite communications is a promising medium for multicasting services such as streaming media delivery. However, most of the current satellite multicasting systems use a star-type network with one transmitting earth station called a bub, which is generally located in an urban area. Therefore, it is difficult for small businesses located in rural areas to send their contents by using satellite multicasting network. To meet these demands, we developed the direct-multicasting satellite communications system (DMSCS), which can provides a full-mesh type satellite network easily and cost-effectively. DMSCS uses our newly developed multi-carrier/multi-rate modem called the group modem and a highly effective channel assignment control program. The group modem is an FDMA (Frequency Division Multiple Access) modem. It is composed of a control module, user interface modules, a multi-carrier/multi-rate modem (MCMRM) module, and IF up/down-converter module. Its features include simultaneous connections with 32 different points, communication at an arbitrary rate, and the use of a dispersed and discontinuous spectrum. The highly effective channel assignment control program is the operation program for DMSCS. It has scale flexibility and high functionality. This paper described the features of DMSCS, the architecture and performance evaluation of the group modem, and example of new services making the best use of the advantages of DMSCS.
일본어 학습자의 커뮤니케이션 능력과 전략, strategy 고찰
다바타미쓰코 ( Tabata Mitsuko ) 한국일어일문학회 2014 日語日文學硏究 Vol.89 No.1
비모어화자는 다양한 방법을 사용하여 커뮤니케이션을 하는데 그 오류라고 할 수 있는 비모어화자 표현은 그 나름의 고심한 산물이라고 할 수 있다. 그러므 로 커뮤니케이션교육에 있어서는 비모어화자에게서 나타나는 자료에서 그들의 고민과 일본어 운용 실태를 명확하게 하는 연구가 필수적이다. 본고에서는 한국어를 모어로 가진 일본어 학습자의 커뮤니케이션 능력과 그 전략에 대하여 연구하였으며, 학습자의 배경과 오용에 초점을 맞추어 고찰하였 다. 분석 결과, ``ね, よ, よね``의 사용, ``웃게 만드는 기술``, ``청자의 이해를 도우는 배려``, ``共話(두 명 이상이 하나의 발화를 같이 이해한다는 전제 하에 말을 완성 해 나가는 이야기방식)``, ``の/んだから``, ``포말, 인포말 표현의 혼용``, ``なんか, やっぱり``등의 필러(filler)에서 학습자의 사회적 및 비사회적 전략을 찾아볼 수 있었다. 이것이 그들의 개성이며 그들의 고유한 전략이 반영된 것으로 본다. The nonnative language speakers are using various sort of method doing for their communication, but it is misused doing for their communication, but it is misused, their peculiar expressions are their devised production. Therefore, the educational communication for them is, from the data of nonnative language using, we have to find their type of study and real condition of practical use, so we think such kind of research to clear should be very important. This manuscript is considerate of the communication ability and its strategy for the Japanese language learner who is using Korean mother-language. As a result I found the two big aspects. The first one is can observe progressive posture of strategy, using of last postpositional particle ``NE, YO, YONE``, think hard for take the laughing consideration to help listener`s understand, and ``KYOWA`` - more than two speaker talk about one thing and helping each other to understand, making the way to talk also. The another one is, to the listener making displease and feeling of fear by strategy using ``NO-NDAKARA``, mixing to use expression of formal and informal, and ``NANKA``, ``YAPPARI`` of etc, to use kind of fillers. For that result, on the learner`s communication of strategy, we have known, there was bigly influenced by the way of study, learning object, and personal ideas, than learner`s learning experiences. These are personality of them and their original strategy was very clearly and reflected.