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Yamaguchi K, Kitagawa Y, Isobe H, Shoji M, Yamanaka S, Okumura M. Reprint of “Theory of chemical bonds in metalloenzymes XVIII. Importance of mixed-valence configurations for Mn5O5, CaMn4O5 and Ca2Mn3O5 clusters revealed by UB3LYP computations. A bio-inspired strategy for artificial photosynthesis”. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yamaguchi K, Shoji M, Isobe H, Kitagawa Y, Yamada S, Kawakami T, Yamanaka S, Okumura M. Theory of chemical bonds in metalloenzymes XVI. Oxygen activation by high-valent transition metal ions in native and artificial systems. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Yamaguchi K, Yamanaka S, Shoji M, Isobe H, Kitagawa Y, Kawakami T, Yamada S, Okumura M. Theory of chemical bonds in metalloenzymes XIX: labile manganese oxygen bonds of the CaMn4O5cluster in oxygen evolving complex of photosystem II. Mol Phys 2013. [DOI: 10.1080/00268976.2013.842009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mita M, Tanaka H, Yanagihara H, Nakagawa JI, Hishinuma S, Sutherland C, Walsh MP, Shoji M. Membrane depolarization-induced RhoA/Rho-associated kinase activation and sustained contraction of rat caudal arterial smooth muscle involves genistein-sensitive tyrosine phosphorylation. J Smooth Muscle Res 2013; 49:26-45. [PMID: 24133693 PMCID: PMC5137315 DOI: 10.1540/jsmr.49.26] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Rho-associated kinase (ROK) activation plays an important role in K+-induced
contraction of rat caudal arterial smooth muscle (Mita et al., Biochem J. 2002; 364:
431–40). The present study investigated a potential role for tyrosine kinase activity in
K+-induced RhoA activation and contraction. The non-selective tyrosine kinase
inhibitor genistein, but not the src family tyrosine kinase inhibitor PP2, inhibited
K+-induced sustained contraction (IC50 = 11.3 ± 2.4 µM). Genistein
(10 µM) inhibited the K+-induced increase in myosin light chain
(LC20) phosphorylation without affecting the Ca2+ transient. The
tyrosine phosphatase inhibitor vanadate induced contraction that was reversed by genistein
(IC50 = 6.5 ± 2.3 µM) and the ROK inhibitor Y-27632 (IC50 = 0.27 ±
0.04 µM). Vanadate also increased LC20 phosphorylation in a genistein- and
Y-27632-dependent manner. K+ stimulation induced translocation of RhoA to the
membrane, which was inhibited by genistein. Phosphorylation of MYPT1 (myosin-targeting
subunit of myosin light chain phosphatase) was significantly increased at Thr855 and
Thr697 by K+ stimulation in a genistein- and Y-27632-sensitive manner. Finally,
K+ stimulation induced genistein-sensitive tyrosine phosphorylation of
proteins of ∼55, 70 and 113 kDa. We conclude that a genistein-sensitive tyrosine kinase,
activated by the membrane depolarization-induced increase in
[Ca2+]i, is involved in the RhoA/ROK activation and sustained
contraction induced by K+. Ca2+ sensitization, myosin light chain
phosphatase, RhoA, Rho-associated kinase, tyrosine kinase
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Hamakawa Y, Omori N, Ouchida M, Nagase M, Sato K, Nagano I, Shoji M, Fujita T, Abe K. Severity dependent up-regulations of LOX-1 and MCP-1 in early sclerotic changes of common carotid arteries in spontaneously hypertensive rats. Neurol Res 2013; 26:767-73. [PMID: 15494120 DOI: 10.1179/016164104225016074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Lectin-like oxidized low-density lipoprotein receptor (LOX-1) and monocyte chemoattractant protein-1 (MCP-1) are molecules involving in the initiation and progression of atherosclerosis. In order to examine a possible difference in LOX-1 and MCP-1 expressions depending on the severity of early stage of atherosclerosis, we investigated atherosclerotic changes by exposure to hypertension and hyperlipidemia in common carotid arteries (CCAs) of stroke-prone spontaneously hypertensive rat (SHR-SP). Three rat model groups such as control [Wistar Kyoto rat (WKY) group], hypertension (SHR-SP group) and hypertension + hyperlipidemia [SHR-SP + high fat and cholesterol (HFC) group] were used. Body weights, brain weights, systolic blood pressures and serum levels of total cholesterol, low-density lipoprotein and triglyceride were measured at 0, 5, 10 and 15 days after appropriate diet. Immunohistochemistry showed that the positive area and the strength of LOX-1 and MCP-1 were larger in the SHR-SP + HFC group than in the SHR-SP group, while no immunoreactivities were found in the WKY group. Conventional RT-PCR and real-time PCR analyses showed that mRNAs of those in the SHR-SP group were higher with greater up-regulation in the SHR-SP + HFC group. LOX-1 and MCP-1 expressions were coordinately up-regulated at mRNA and protein levels in an early stage of sclerosis depending on the severity of atherosclerotic stress. Activations of LOX-1 and MCP-1 are collectively involved in the early stage of atherosclerosis.
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Yamaguchi K, Kitagawa Y, Isobe H, Shoji M, Yamanaka S, Okumura M. Theory of chemical bonds in metalloenzymes XVIII. Importance of mixed-valence configurations for Mn5O5, CaMn4O5 and Ca2Mn3O5 clusters revealed by UB3LYP computations. A bio-inspired strategy for artificial photosynthesis. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shoji M, Isobe H, Yamanaka S, Umena Y, Kawakami K, Kamiya N, Shen JR, Yamaguchi K. Theoretical insight in to hydrogen-bonding networks and proton wire for the CaMn4O5 cluster of photosystem II. Elongation of Mn–Mn distances with hydrogen bonds. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00051f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abe K, Ikeda Y, Kurata T, Ohta Y, Manabe Y, Okamoto M, Takamatsu K, Ota T, Takao Y, Shiro Y, Shoji M, Kamiya T, Kobayashi H, Koizumi A. 760 – Cognitive and affective impairments of a novel sca/mnd crossroad mutation asidan. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)75967-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Inoue Y, Fujisawa M, Kawamoto S, Shoji M, Hashizume S, Fujii M, Katakura Y, Shirahata S. Effectiveness of vitamin A acetate for enhancing the production of lung cancer specific monoclonal antibodies. Cytotechnology 2012; 31:77-83. [PMID: 19003127 DOI: 10.1023/a:1008016020785] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The antibody productivity of the human-human hybridoma cell line AE6, which produces the lung cancer specific human monoclonal antibody AE6F4, was enhanced fourfold upon stimulation with 1 mug/ml of vitamin A acetate for one day. The enhancement lasted for about two weeks, and could be repeated by another stimulation with vitamin A acetate. The enhancing effect of vitamin A acetate was influenced by the cell density. Enhancement was clearly observed when the cell density was under 10(6) cells/ml. However, when the cell density was over 10(7) cells/ml, enhancement was observed weakly or not at all. Although the enhancing effect of vitamin A acetate is not unique to AE6 cells, not all human-human hybridoma cell lines show increased productivity upon VA acetate stimulation. This study suggests that the response to vitamin A acetate may be related to the properties of a particular fusion partner which the hybridoma cell inherits. The efficacy of vitamin A acetate for production of human monoclonal antibodies using human-human hybridomas is discussed.
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Yamaguchi M, Shirai Y, Inouye Y, Shoji M, Kamei M, Hashizume S, Shirahata S. Changes in monoclonal antibody productivity of recombinant BHK cells immobilized in collagen gel particles. Cytotechnology 2012; 23:5-12. [PMID: 22358515 DOI: 10.1023/a:1007959400666] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Animal cell perfusion high density culture is often adopted for the production of biologicals in industry. In high density culture sometimes the productivity of biologicals has been found to be enhanced. Especially in immobilized animal cell culture, significant increase in the productivity has been reported. We have found that the specific monoclonal antibody (MAb) productivity of an immobilized hybridoma cell is enhanced more than double. Several examples of enhancing productivities have been also shown by collagen immobilized cells. Immobilized cells involve some different points from non-immobilized cells in high density culture: In immobilized culture, some cells are contacted together, resulting in locally much higher cell concentration more than 10(8) cells/ml. Information originating from a cell can be easily transduced to the others in immobilized culture because the distance between cells is much nearer. Here we have performed collagen gel immobilized culture of recombinant BHK cells which produce a human IgG monoclonal antibody in a protein-free medium for more than three months. In this high density culture a stabilized monoclonal antibody production was found with around 8 times higher specific monoclonal antibody productivity compared with that in a batch serum containing culture. No higher MAb productivity was observed using a conditioned medium which was obtained from the high density culture, indicating that no components secreted from the immobilized cells work for enhancing monoclonal antibody production. The MAb productivity by the non-immobilized cells obtained by dissolving collagen using a collagenase gradually decreased and returned to the original level in the batch culture using a fresh medium. This suggests that the direct contact of the cells or a very close distance between the cells has something to do with the enhancement of the MAb productivity, and the higher productivity is kept for a while in each cell after they are drawn apart.
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Hishinuma S, Sato Y, Akatsu C, Shoji M. The affinity of histamine for Gq protein-coupled histamine H(1)-receptors is predominantly regulated by their internalization in human astrocytoma cells. J Pharmacol Sci 2012; 119:233-42. [PMID: 22786583 DOI: 10.1254/jphs.11054fp] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
We examined the regulatory mechanisms of the affinity of Gq protein-coupled histamine H(1)-receptors for histamine after histamine pretreatment in intact human U373 MG astrocytoma cells. In control cells, the displacement curves for histamine against the binding of 5 nM [(3)H]mepyramine, a radioligand for H(1)-receptors, showed the presence of two binding sites for histamine, that is, high and low affinity sites. Pretreatment with 0.1 mM histamine for 30 min at 37°C induced a significant reduction in the percentage of high affinity sites for histamine and a concomitant increase in the percentage of low affinity sites with no change in their pIC(50) values. These histamine-induced changes were insensitive to 30 µM KN-62, an inhibitor of Ca(2+)/calmodulin-dependent protein kinase II, but they were completely inhibited either by 0.4 mM ZnCl(2), an inhibitor of G protein-coupled receptor kinases (GRKs), or under hypertonic conditions, where clathrin-mediated endocytosis is known to be inhibited. These results suggest that histamine-induced conversion of high to low affinity sites for histamine is predominantly regulated by GRK/clathrin-mediated internalization of H(1)-receptors in human astrocytoma cells.
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Abe K, Ikeda Y, Kurata T, Ohta Y, Manabe Y, Okamoto M, Takamatsu K, Ohta T, Takao Y, Shiro Y, Shoji M, Kamiya T, Kobayashi H, Koizumi A. Cognitive and affective impairments of a novel SCA/MND crossroad mutation Asidan. Eur J Neurol 2012; 19:1070-8. [DOI: 10.1111/j.1468-1331.2012.03669.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Ishii-Nozawa R, Mita M, Shoji M, Takeuchi K. Dysfunction of Neurotransmitter Modulation System on Adrenergic Nerves of Caudal Artery in Type 2 Diabetic Goto–Kakizaki Rats. Biol Pharm Bull 2012; 35:1091-5. [DOI: 10.1248/bpb.b12-00052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Uno S, Uchida T, Sekimoto M, Murakami T, Miyama K, Shoji M, Nakano E, T.Koike, Morita K, Satoh H, T.Kamiyama, Kiyanagi Y. Two-dimensional Neutron Detector with GEM and its Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.phpro.2012.03.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Isobe H, Shoji M, Yamanaka S, Umena Y, Kawakami K, Kamiya N, Shen JR, Yamaguchi K. Theoretical illumination of water-inserted structures of the CaMn4O5 cluster in the S2 and S3 states of oxygen-evolving complex of photosystem II: full geometry optimizations by B3LYP hybrid density functional. Dalton Trans 2012; 41:13727-40. [DOI: 10.1039/c2dt31420g] [Citation(s) in RCA: 162] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Inoue Y, Kawamoto S, Shoji M, Hashizume S, Teruya K, Katakura Y, Shirahata S. Properties of ras-amplified recombinant BHK-21 cells in protein-free culture. Cytotechnology 2011; 33:21-6. [PMID: 19002807 DOI: 10.1023/a:1008163312841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We compared serum and protein-free cultures ofa ras-amplified recombinant BHK-21 cell line(ras-rBHK-IgG), which hyperproduces a lungcancer specific recombinant human monoclonal antibody. Ras-rBHK-IgG cells were shown to grow well, evenin protein-free medium and to be morphologicallysimilar to cells cultured in serum containing medium. However, the growth rate of ras-rBHK-IgG cellswas considerably slower in protein-free medium, whichresults in a longer maintenance period compared with cells cultured in serum containing medium. In addition, it was found that antibody production in protein-free culture had a ten times higher maximum than cells cultured in serum containing medium. On theother hand, in high density culture, using the hollowfiber bioreactor system, ras-rBHK-IgG cellscould be maintained for a month in protein-freeculture in contrast with serum culture, which onlylasted for half a month. However, the markedincrease of antibody production was not observed. A total amount of about 15 mg of the recombinantantibody, obtained in protein-free culture, was abouttwo times of that obtained in serum culture, and wasshown to be reactive to lung cancer cells in tissue. From these properties in protein-free medium, it isconcluded that protein-free culture of ras-rBHK-IgG cells is suitable for middle scaleproduction of recombinant human monoclonal antibody.
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Inoue Y, Fujisawa M, Shoji M, Hashizume S, Katakura Y, Shirahata S. Enhanced antibody production of human-human hybridomas by retinoic acid. Cytotechnology 2011; 33:83-8. [PMID: 19002814 DOI: 10.1023/a:1008155609072] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The enhancement of human monoclonal antibody production by retinoic acid (RA) was evaluated usingthe human-human hybridoma cell line BD9 underserum-free culture condition. The amount of humanIgG secreted by BD9 hybriodmas was enhanced abouteight-fold by treatment with 10(-7) M of RA for 4days. Northern blot analysis showed that both mRNAlevels of the IgG light and heavy chains were markedlyincreased by RA when compared with control without RAtreatment. On the other hand, it was found thatcontinuous treatment of cells with RA was not alwaysrequired to exhibit the enhancing effect, suggestingthat RA may act as a trigger for IgG gene expression. The comparison between extra- and intracellular IgGamounts by immunoblot analysis suggests that thesecretion rate of IgG may be accelerated by RAtreatment. These results suggest that RA may be aneffective culture additive for efficient production ofhuman monoclonal antibody using human-humanhybridomas.
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Meguro Y, Ito Y, Koba S, Yokota Y, Hirano T, Ban Y, Tsunoda F, Sato T, Shoji M, Suzuki H, Geshi E, Kobayashi Y, Katagiri T. 515 SMALL DENSE LDL-CHOLESTEROL IS SUPERIOR TO LDL-CHOLESTEROL FOR DETERMINING SEVERE CORONARY ATHEROSCLEROSIS. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70516-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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69
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Hishinuma S, Shoji M. Desensitization of depolarization-mediated contractile pathways does not necessarily regulate receptor-mediated excitation-contraction coupling in longitudinal smooth muscle of guinea pig ileum. Clin Exp Pharmacol Physiol 2011; 38:233-8. [DOI: 10.1111/j.1440-1681.2011.05491.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ikeda Y, Abe K, Watanabe M, Shoji M, Fontaine B, Itoyama Y, Hirai S. A Japanese family of autosomal dominant hypokalemic periodic paralysis with a CACNL1A3 gene mutation. Eur J Neurol 2011. [DOI: 10.1111/j.1468-1331.1996.tb00246.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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71
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England A, Yoon S, Kim W, Lee D, Chung J, Lee K, Yonekawa H, Shoji M, Oh Y, Kwon M. Tokamak field error measurements with an electron beam in KSTAR. FUSION ENGINEERING AND DESIGN 2011. [DOI: 10.1016/j.fusengdes.2010.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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72
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Masuzaki S, Shoji M, Tokitani M, Murase T, Kobayashi M, Morisaki T, Yonezu H, Sakamoto R, Yamada H, Komori A. Design and installation of the closed helical divertor in LHD. FUSION ENGINEERING AND DESIGN 2010. [DOI: 10.1016/j.fusengdes.2010.08.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Emoto M, Yoshida M, Nakanishi H, Yamamoto T, Watanabe T, Watanabe K, Shoji M, Nagayama Y. Remote Participation for the LHD Experiment. FUSION SCIENCE AND TECHNOLOGY 2010. [DOI: 10.13182/fst10-a10831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kawahata K, Peterson BJ, Akiyama T, Ashikawa N, Emoto M, Funaba H, Hamada Y, Ida K, Inagaki S, Ido T, Isobe M, Goto M, Mase A, Masuzaki S, Michael C, Morisaki T, Morita S, Muto S, Nagayama Y, Nakamura Y, Nakanishi H, Sakamoto R, Narihara K, Nishiura M, Ohdachi S, Okajima S, Osakabe M, Sakakibara S, Sanin A, Sasao M, Sato K, Shimizu A, Shoji M, Sudo S, Tamura N, Tanaka K, Toi K, Tokuzawa T, Veshchev EV, Vyacheslavov LN, Yamada I, Yoshinuma M. Overview of LHD Plasma Diagnostics. FUSION SCIENCE AND TECHNOLOGY 2010. [DOI: 10.13182/fst10-a10819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Veloso-Martins M, Costa ME, Almeida V, Peterson BD, Gordon K, Domar A, Domar A, Gordon K, Kondaveeti N, Maher B, Hamilton J, Harrison RF, Mocanu E, Shimizu S, Shoji M, Hamatani T, Kuji N, Yoshimura Y, Ohta H, Melamed RM, Braga DPAF, Figueira RCS, Pasqualotto FF, Iaconelli A, Borges E, Stiel M, Elwyn G, Boivin J, Besse D, Bellavia M, de Ziegler D, Wunder D, Chueca A, Devesa M, Tur R, Mancini F, Buxaderas R, Barri PN, McMahon C, Gibson F, Fisher J, Hammarberg K, Boivin J, Saunders D, Hammarberg K, Fisher J, Baker G, Laufer D, Emery M, Lechot C, Germond M, Payne DA, Goedeke S. Posters * Psychology and Counselling. Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hishinuma S, Komazaki H, Fukui H, Shoji M. Ubiquitin/proteasome-dependent down-regulation following clathrin-mediated internalization of histamine H1-receptors in Chinese hamster ovary cells. J Neurochem 2010; 113:990-1001. [DOI: 10.1111/j.1471-4159.2010.06669.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Mita M, Ito K, Taira K, Nakagawa JI, Walsh MP, Shoji M. Attenuation of store-operated Ca2+ entry and enhanced expression of TRPC channels in caudal artery smooth muscle from Type 2 diabetic Goto-Kakizaki rats. Clin Exp Pharmacol Physiol 2010; 37:670-8. [PMID: 20337661 DOI: 10.1111/j.1440-1681.2010.05373.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
1. Previously, we found that Ca(2+) entry from the extracellular space via alpha(1)-adrenoceptor-activated, Ca(2+)-permeable channels, but not voltage-gated Ca(2+) channels, is impaired in endothelium-denuded caudal artery smooth muscle from Type 2 diabetic Goto-Kakizaki (GK) rats. In the present study, we investigated the impairment of Ca(2+) entry mechanisms via Ca(2+)-permeable channels from the extracellular space in response to alpha(1)-adrenoceptor stimulation (cirazoline) in endothelium-denuded caudal artery strips isolated from GK rats. 2. The contraction of caudal artery strips from GK rats in response to the sarcoplasmic reticulum Ca(2+)-ATPase inhibitor cyclopiazonic acid (10 micromol/L), which causes depletion of Ca(2+) stores and subsequent store-operated Ca(2+) (SOC) entry, was significantly depressed compared with that of Wistar rats (maximal force 0.023 +/- 0.004 vs 0.058 +/- 0.005 mN/mg tissue wet weight, respectively). These results suggest that receptor-activated Ca(2+) entry through SOC channels is impaired in caudal artery smooth muscle in GK rats. 3. The classic transient receptor potential (TRPC) channels, which constitute SOC and receptor-operated cation channels, play an important role in Ca(2+) regulation. Therefore, we investigated the mRNA and protein expression of TRPC channels in caudal artery smooth muscle from Wistar and GK rats using reverse transcription-polymerase chain reaction and immunoblotting. 4. Expression of TRPC1, TRPC3 and TRPC6 mRNA and protein was found in Wistar rats. However, in GK rats, in addition to the expression of these TRPC channels, mRNA and protein expression of TRPC4 was found. The expression of TRPC1 and TRPC6, but not TRPC3, was increased approximately twofold in GK rats compared with Wistar rats. 5. These results suggest that changes in TRPC channel expression may be responsible, in part, for the dysfunction of receptor-mediated Ca(2+) entry in caudal artery smooth muscle of GK rats.
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Hirohata M, Yoshita M, Ishida C, Ikeda SI, Tamaoka A, Kuzuhara S, Shoji M, Ando Y, Tokuda T, Yamada M. Clinical features of non-hypertensive lobar intracerebral hemorrhage related to cerebral amyloid angiopathy. Eur J Neurol 2010; 17:823-9. [PMID: 20158508 DOI: 10.1111/j.1468-1331.2009.02940.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE The present study aims to clarify the clinical features of non-hypertensive cerebral amyloid angiopathy-related lobar intracerebral hemorrhage (CAA-L-ICH). METHODS We investigated clinical, laboratory, and neuroimaging findings in 41 patients (30, women; 11, men) with pathologically supported CAA-L-ICH from 303 non-hypertensive Japanese patients aged >OR=55, identified via a nationwide survey as symptomatic CAA-L-ICH. RESULTS The mean age of patients at onset of CAA-L-ICH was 73.2 +/- 7.4 years; the number of patients increased with age. The corrected female-to-male ratio for the population was 2.2, with significant female predominance. At onset, 7.3% of patients received anti-platelet therapy. In brain imaging studies, the actual frequency of CAA-L-ICHs was higher in the frontal and parietal lobes; however, after correcting for the estimated cortical volume, the parietal lobe was found to be the most frequently affected. CAA-L-ICH recurred in 31.7% of patients during the average 35.3-month follow-up period. The mean interval between intracerebral hemorrhages (ICHs) was 11.3 months. The case fatality rate was 12.2% at 1 month and 19.5% at 12 months after initial ICH. In 97.1% of patients, neurosurgical procedures were performed without uncontrollable intraoperative or post-operative hemorrhage. CONCLUSIONS Our study revealed the clinical features of non-hypertensive CAA-L-ICH, including its parietal predilection, which will require further study with a larger number of patients with different ethnic backgrounds.
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Kawakami T, Takeda R, Nishihara S, Saito T, Shoji M, Yamada S, Yamanaka S, Kitagawa Y, Okumura M, Yamaguchi K. Symmetry and Broken-Symmetry in Molecular Orbital Descriptions of Unstable Molecules. 3. The Nature of Chemical Bonds of Spin Frustrated Systems. J Phys Chem A 2009; 113:15281-97. [DOI: 10.1021/jp905991r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mita M, Kuramoto T, Ito K, Toguchi-Senrui N, Hishinuma S, Walsh MP, Shoji M. Impairment of α1-adrenoceptor-mediated contractile activity in caudal arterial smooth muscle from type 2 diabetic Goto-Kakizaki rats. Clin Exp Pharmacol Physiol 2009; 37:350-7. [PMID: 19793102 DOI: 10.1111/j.1440-1681.2009.05308.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
1. In the present study, we compared the responsiveness of de-endothelialized caudal artery smooth muscle strips, isolated from Type 2 diabetic Goto-Kakizaki (GK) and normal Wistar rats, to alpha(1)-adrenoceptor stimulation (cirazoline) and membrane depolarization (K(+)). 2. The contractile and myosin 20 kDa light chain (LC(20)) phosphorylation responses to 0.3 micromol/L cirazoline of caudal artery strips isolated from 12-week-old GK rats were significantly reduced compared with those of age-matched Wistar rats, whereas the contractile and LC(20) phosphorylation responses to 60 mmol/L K(+) were unaltered. 3. Stimulation of fura 2-AM-loaded strips from GK rats with 0.3 micromol/L cirazoline induced a significantly smaller rise in [Ca(2+)](i) (by approximately 20%) compared with that in strips from Wistar rats, whereas comparable Ca(2+) transients were evoked by K(+) in both. 4. Using quantitative polymerase chain reaction, no significant differences were detected in the mRNA expression of alpha(1A)-, alpha(1B)- and alpha(1D)-adrenoceptor subtypes between GK and Wistar rats. 5. Cirazoline (1 micromol/L)- and caffeine (20 mmol/L)-induced contractions in the absence of extracellular Ca(2+) were unaltered in GK rats, suggesting that the release of Ca(2+) from the sarcoplasmic reticulum in response to cirazoline does not differ between GK and Wistar rats. 6. The results of the present study suggest that Ca(2+) entry from the extracellular space via alpha(1)-adrenoceptor-activated, Ca(2+)-permeable channels, but not via membrane depolarization and voltage-gated L-type Ca(2+) channels, is impaired in caudal artery smooth muscle of GK rats.
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Shimizu S, Shoji M, Hamatani T, Kuji N, Yoshimura Y, Ohta H. Tendencies and correlations regarding the sexuality of infertile couples assessed with the Golombok-Rust Inventory of Sexual Satisfaction (GRISS). Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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82
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Ishii T, Kaneda I, Furuta A, Shoji M, Ishibashi S, Hatsugai K, Ohara M, Sarashina H, Masuoka H, Sekine Y, Watanabe G. [A case of advanced gastric and rectal cancer (double cancer) successfully treated with mFOLFOX6 therapy]. Gan To Kagaku Ryoho 2009; 36:1171-1174. [PMID: 19620811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A 75-year-old man was diagnosed with gastric cancer (UL post c0- II c (c T1N0) and M-less ctype II (cT2N0)) and rectal cancer (Rb ctype II (cT2N1) with multiple lung metastases (M1). The patient was treated with modified (m) FOLFOX6 regimen (oxaliplatin in combination with infusional 5-fluorouracil/Leucovorin). Chest and abdominal CT scan revealed that multiple lung metastases and abdominal lymph node metastases were obviously reduced in size. The primary lesion of the rectum almost disappeared on endoscopic examination. As for the lesions of the stomach, the UL post c0- II c lesion completely disappeared, and the M-less ctype II lesion was reduced remarkably. Thus, a significant reduction of the tumors was observed. This case suggests that mFOLFOX6 regimen can be an option for gastric cancer.
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Yamada H, Imagawa S, Takeiri Y, Kaneko O, Mutoh T, Mito T, Chikaraishi H, Hamaguchi S, Ida K, Igami H, Ikeda K, Kasahara H, Kobayashi M, Kubo S, Kumazawa R, Maekawa R, Masuzaki S, Miyazawa J, Morisaki T, Morita S, Nagaoka K, Nakamura Y, Narushima Y, Osakabe M, Saito K, Sakakibara S, Sakamoto R, Seki T, Shimozuma T, Shoji M, Suzuki Y, Takahata K, Tamura H, Tsumori K, Watanabe K, Yamada S, Yanagi N, Yoshimura Y, Kawahata K, Ohyabu N, Komori A, Motojima O. 10 years of engineering and physics achievements by the Large Helical Device project. FUSION ENGINEERING AND DESIGN 2009. [DOI: 10.1016/j.fusengdes.2009.01.068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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84
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Higashizono Y, Nakashima Y, Shoji M, Nishino N, Kobayashi S, Sakamoto M. Neutral Transport Analysis in Plasma Edge Region of the GAMMA-10 Central-Cell. FUSION SCIENCE AND TECHNOLOGY 2009. [DOI: 10.13182/fst09-a7010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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85
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Yoshimura M, Ohara N, Kondo Y, Shoji M, Okano S, Nakano Y, Abiko Y, Nakayama K. Proteome analysis of Porphyromonas gingivalis cells placed in a subcutaneous chamber of mice. ACTA ACUST UNITED AC 2008; 23:413-8. [PMID: 18793365 DOI: 10.1111/j.1399-302x.2008.00444.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Porphyromonas gingivalis, an oral anaerobic bacterium, is considered a major pathogen for chronic periodontitis. Pathogenic bacteria usually upregulate or downregulate gene expression to combat the protective responses of their hosts. METHODS To determine what protein is regulated when P. gingivalis cells invade host tissues, we analyzed the proteome of P. gingivalis cells that were placed in a mouse subcutaneous chamber by two-dimensional gel electrophoresis and mass spectrometry. RESULTS Fourteen proteins were upregulated, while four proteins were downregulated. We focused on three upregulated proteins, PG1089 (DNA-binding response regulator RprY), PG1385 (TPR domain protein), and PG2102 (immunoreactive 61-kDa antigen), and constructed mutant strains that were defective in these proteins. Mouse abscess model experiments revealed that the mutant strain defective in PG1385 was clearly less virulent than the wild-type parent strain. CONCLUSION These results indicate that the PG1385 protein is involved in P. gingivalis virulence and that the method used here is useful when investigating the P. gingivalis proteins responsible for virulence.
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86
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Ito Y, Koba S, Hirano T, Yokota Y, Tsunoda F, Ban Y, Sato T, Shoji M, Suzuki H, Geshi E, Katagiri T. SIGNIFICANCE OF SMALL DENSE LOW-DENSITY LIPOPROTEINS IN CORONARY HEART DISEASE. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70971-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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87
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Saito T, Kitagawa Y, Shoji M, Nakanishi Y, Ito M, Kawakami T, Okumura M, Yamaguchi K. Theoretical studies on the structure and effective exchange integral (Jab) of an active site in oxyhemocyanin (oxyHc) by using approximately spin-projected geometry optimization (AP-opt) method. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.02.107] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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88
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Nagayama Y, Emoto M, Nakanishi H, Sudo S, Imazu S, Inagaki S, Iwata C, Kojima M, Nonomura M, Ohsuna M, Tsuda K, Yoshida M, Chikaraishi H, Funaba H, Horiuchi R, Ishiguro S, Ito Y, Kubo S, Mase A, Mito T, Miyazawa J, Mutoh T, Nakamura Y, Saito K, Sakamoto R, Seki T, Shoji M, Takami S, Watanabe T, Yamamoto T, Komori A, Motojima O. Control, data acquisition, data analysis and remote participation in LHD. FUSION ENGINEERING AND DESIGN 2008. [DOI: 10.1016/j.fusengdes.2007.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Tomiyama M, Arai A, Kimura T, Suzuki C, Watanabe M, Kawarabayashi T, Shoji M. Exacerbation of chronic pancreatitis induced by anticholinesterase medications in myasthenia gravis. Eur J Neurol 2008; 15:e40-1. [PMID: 18325026 DOI: 10.1111/j.1468-1331.2008.02098.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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90
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Suzuki H, Kusuyama T, Sato R, Yokota Y, Tsunoda F, Sato T, Shoji M, Iso Y, Koba S, Katagiri T. Elevation of matrix metalloproteinases and interleukin-6 in the culprit coronary artery of myocardial infarction. Eur J Clin Invest 2008; 38:166-73. [PMID: 18257779 DOI: 10.1111/j.1365-2362.2007.01919.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND Interleukin-6 (IL-6) and metalloproteinases (MMPs) are involved in the instability of vulnerable plaque associated with the induction of acute myocardial infarction (AMI). We examined the regional changes of cytokines, MMPs and adhesion molecules in patients with AMI to elucidate how these factors are involved in the onset of AMI. MATERIALS AND METHODS One hundred and twenty-two patients with AMI were included. Blood was aspirated from the culprit coronary artery with a thrombectomy catheter, and was also sampled from peripheral veins during the coronary intervention. Control samples were obtained from the peripheral blood of age-matched patients. RESULTS The serum levels of IL-6 (P < 0.05), tumour necrosis factor-alpha (P < 0.005), MMP-1 (P < 0.001), MMP-13 (P < 0.001), soluble intercellular adhesion molecule-1 (P < 0.005), and soluble vascular cellular adhesion molecule-1 (P < 0.05) in peripheral blood were significantly higher in the AMI group than in the controls. Aspirated serum contained significantly higher levels of IL-6 (P < 0.001), MMP-1 (P < 0.001), and MMP-13 (P < 0.05) compared to the peripheral blood of AMI. Serum IL-6 levels were significantly higher in the aspirated than in the peripheral blood in the patients hospitalized within 6 h and 6-12 h, but were similar in the aspirated and peripheral blood of the patients hospitalized 12-24 h after the onset of AMI. There were no differences between the aspirated serum and peripheral blood in the levels of interleukin-1beta and MMP-2. CONCLUSIONS The levels of MMP-1, MMP-13 and IL-6 were higher in the culprit coronary artery than in the peripheral blood. These factors appear to be involved in the early stage of AMI.
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Hayashi T, Wang XQ, Zhang HZ, Deguchi K, Nagotani S, Sehara Y, Tsuchiya A, Nagai M, Shoji M, Abe K. Induction of platelet derived-endothelial cell growth factor in the brain after ischemia. Neurol Res 2007; 29:463-8. [PMID: 17535565 DOI: 10.1179/016164107x164139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES Platelet derived-endothelial cell growth factor (PD-ECGF) is a highly potent angiogenic factor. Although angiogenesis plays an active role in pathophysiology of stroke, the expression pattern of this molecule in ischemic brain has not been investigated. In the present study, therefore, we investigated the change of PD-ECGF expression in the brain after ischemia. METHODS Using male Wistar rats, the right middle cerebral artery was occluded by a nylon thread for 90 minutes. The animals were decapitated 3 hours, 1, 4 and 10 days after the reperfusion, and frozen sections were prepared. We then performed immunohistochemistry for PD-ECGF and identified the cell phenotype which strongly expressed it by fluorescent double staining. RESULTS In the sham-operated brain, only small numbers of cells slightly expressed PD-ECGF. The number of positively stained cells increased at the peri-ischemic area from hour 3 of reperfusion. Not only small-sized cells but also large-sized cells became stained. The number of stained cells further increased, and peaked at day 4 for large-sized cells and at day 10 as to small-sized cells. Fluorescent double staining revealed that both large-sized and small-sized cells were neurons, indicating that neurons are the main source of PD-ECGF production in the ischemic brain. DISCUSSION PD-ECGF has a strong angiogenic property without vascular permeability increasing effect. This molecule may have a therapeutic potential for ischemic stroke treatment.
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Sugimoto K, Rashid IB, Shoji M, Suda T, Yasujima M. Early changes in insulin receptor signaling and pain sensation in streptozotocin-induced diabetic neuropathy in rats. THE JOURNAL OF PAIN 2007; 9:237-45. [PMID: 18331706 DOI: 10.1016/j.jpain.2007.10.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 10/17/2007] [Indexed: 10/22/2022]
Abstract
UNLABELLED The objective of the present study was to evaluate the time course of changes in peripheral nerve insulin receptor (IR) signaling and compare observed findings with behavioral responses to noxious mechanical and thermal stimuli in streptozotocin (STZ)-diabetic rats over 12 weeks of diabetes. Diabetic rats developed mechanical hyperalgesia, as indicated by decreased paw withdrawal thresholds to mechanical stimuli that were detectable after 2 weeks of diabetes; they also developed thermal hypoalgesia, as indicated by increased tail flick latencies to thermal stimuli that were detectable at 1 week of diabetes. Western blot analysis revealed decreased phosphorylated: total IR protein ratio that was detectable as early as 2 weeks of diabetes, whereas phosphorylated:total Akt protein ratio was decreased at 2 weeks and increased at 12 weeks of diabetes with unchanged PI-3K protein levels. To our knowledge, the present study is the first to demonstrate that impaired peripheral nerve IR signaling, as indicated by decreased phosphorylated:total IR protein ratio, coincides with early mechanical hyperalgesia and thermal hypoalgesia in STZ-diabetic rats. This finding may improve understanding of how altered pain sensation develops rapidly in this model. PERSPECTIVE This study examined peripheral nerve IR signaling during the early course of altered nociception in STZ-diabetic rats. In diabetic rats, impaired peripheral nerve IR signaling is observed shortly after STZ injection, as is altered nociception. This finding suggests a possible role of impaired IR signaling in diabetic sensory neuropathy.
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93
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Kageyama K, Ikeda H, Sakihara S, Nigawara T, Terui K, Tsutaya S, Matsuda E, Shoji M, Yasujima M, Suda T. A case of thyrotropin-producing pituitary adenoma, accompanied by an increase in anti-thyrotropin receptor antibody after tumor resection. J Endocrinol Invest 2007; 30:957-61. [PMID: 18250618 DOI: 10.1007/bf03349244] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
We describe a rare, but interesting, case of TSH-producing adenoma (TSHoma), accompanied by increases in both anti-TSH receptor antibody (TRAb) and thyroid-stimulating antibody (TSAb) after tumor resection. A 21-yr-old woman was referred to our department for further evaluation of pituitary tumor. In a nearby hospital, she had been diagnosed as having pituitary tumor. Her serum free T4, free T3, and TSH levels were all elevated concomitantly. On the basis of a diagnosis of pituitary adenoma with TSH production, transsphenoidal resection of the pituitary adenoma was performed. Two weeks after the operation, the blood concentrations of TSH were undetectable, whereas both TRAb and TSAb levels were elevated. TSAb levels gradually increased further from 2 weeks to 3 months after the operation, accompanied by an increase in TSH and free T4 levels. TSH is an important hormone in maintaining physiology and regulating immunomodulators in thyrocytes, as it can influence a variety of immune-regulating cytokine-like activities and inhibit expressions of Fas antigen, intracellular adhesion molecule-1, and class II trans-activator. Changes in TSH would modulate the immune circumstances in the thyroid, and then induce TRAb and TSAb. Autoimmune parameters with thyroid function should be observed carefully when managing patients with TSHoma.
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Kobayashi M, Ohyabu N, Mutoh T, Kumazawa R, Feng Y, Shoji M, Morisaki T, Masuzaki S, Sagara A, Sakamoto R, Seki T, Miyazawa J, Watanabe T, Goto M, Ideda K, Kasahara H, Morita S, Peterson BJ, Ashikawa N, Saito K, Sakakibara S, Tokuzawa T, Nakamura Y, Narihara K, Yamada I, Yamada H, Komori A, Motojima O. Edge Transport Control with the Local Island Divertor and Recent Progress in LHD. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hasan KN, Shoji M, Sugimoto K, Tsutaya S, Matsuda E, Kudo R, Nakaji S, Suda T, Yasujima M. Association of novel promoter single nucleotide polymorphisms in vasopressin V1a receptor gene with essential hypertension in nonobese Japanese. J Hum Hypertens 2007; 21:825-7. [PMID: 17653244 DOI: 10.1038/sj.jhh.1002227] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We studied the association between four novel single nucleotide polymorphisms (SNPs) in the promoter region of V1aR gene and essential hypertension in 620 Japanese subjects (365 hypertensives and 255 healthy). A significant association was found between one of the genotypes and alleles at SNP -6951 and hypertension in a subsample of nonobese individuals. This association demonstrated an independent risk for nonobese hypertension.
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Matsubara E, Tsuchiya A, Minami N, Nishino I, Pappolla MA, Shoji M, Abe K. A unique case of limb-girdle muscular dystrophy type 2A carrying novel compound heterozygous mutations in the human CAPN3 gene. Eur J Neurol 2007; 14:819-22. [PMID: 17594342 DOI: 10.1111/j.1468-1331.2007.01808.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A unique sib pair afflicted by limb girdle muscular dystrophy type 2A (LGMD2A) is described showing a slowly progressive autosomal recessive type of muscular dystrophy with onset in the third and fourth decades. The patients had early asymmetric muscle involvement characterized by prominent biceps brachii atrophy with sparing of the knee extensors. Additional findings included elevation of serum creatine kinase level, myopathic EMG changes and dystrophic type of pathology on muscle biopsy. Asymmetrical wasting of muscles in the extremities exhibited uniform and highly selective CT imaging patterns. RNA and DNA analyses confirmed novel compound heterozygous mutations (R147X/L212F) in the human CAPN3 gene.
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Kitagawa Y, Shoji M, Koizumi K, Kawakami T, Okumura M, Yamaguchi K. Theoretical studies on relation among structures, electric structures and magnetic interactions in MMX complexes. Polyhedron 2007. [DOI: 10.1016/j.poly.2006.10.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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98
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Shoji M, Yasujima M. [Recent progress in vasopressin research on cardiovascular diseases]. RINSHO BYORI. THE JAPANESE JOURNAL OF CLINICAL PATHOLOGY 2007; 55:544-8. [PMID: 17657988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Arginine vasopressin (AVP) plays an important role in volume homeostasis and cardiovascular regulation. This review briefly describes recent clinical studies which evaluated the significance of AVP in cardiovascular diseases. Several AVP receptor antagonists, including tolvaptan and conivaptan, have shown promise in human trials for the treatment of heart failure. As plasma AVP concentrations are elevated in patients with heart failure in accordance with their severity, elevated AVP may contribute to their clinical syndrome of fluid retention and vasoconstriction. In some forms of hypertension, circulating AVP are also elevated; however, the precise role of AVP in the pathophysiology of hypertension is controversial. We performed a case-control study in a random sample of 620 rural residents and found an association between nonobese hypertension and -6951G/A single nucleotide polymorphism in the promoter region of the AVP V1a receptor gene. Our results suggest that AVP might contribute to the subdivision of human hypertension. Antiplatelet agents have been shown effective to prevent cardiovascular events. AVP has been known to stimulate platelet aggregation through V1a receptor. Genetic factors are thought to be involved in the heterogeneity of platelet activation. Some studies have been undertaken to identify genetic markers of platelet sensitivity to AVP.
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Nakashima M, Nakano T, Ametani Y, Funamoto H, Uchiyama A, Miwa A, Miyata S, Shoji M, Kondo T, Satake S, Kojima Y. Expression of thymidine phosphorylase as an effect prediction factor for uterine cervical squamous cell carcinoma after radiotherapy: an immunohistochemical study. Int J Gynecol Cancer 2007; 16:1309-13. [PMID: 16803522 DOI: 10.1111/j.1525-1438.2006.00455.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Prognoses in cases of uterine cervical squamous cell carcinoma treated with radiotherapy were investigated in association with immunohistochemical expression of an angiogenic factor, thymidine phosphorylase (TP). Forty-six cases of uterine cervical squamous cell carcinoma mainly treated with radiotherapy during 1992-2001 at our clinic were studied. All were diagnosed as stages IIB to IVA. Paraffin-embedded biopsy specimens excised before radiotherapy were stained immunohistochemically using anti-TP monoclonal antibody. The extent of staining in both tumor and interstitial cells was graded as (-), (+/-), (+), and (2+). Specimens with TP expression levels of (2+) and (+) were regarded as positively stained and those with TP expression levels of (+/-) and (-) as negatively stained. The efficacy of radiotherapy in both groups was analyzed by the Kaplan-Meier method. With tumor cells, 5-year survival rates for the positive (n= 38) and negative (n= 8) staining groups were 73.9% and 42.9%, respectively; the rate being significantly higher for the TP-positive group (log rank, P= 0.0096). Contrarily, with staining for interstitial cells, the 5-year survival rates for the positive (n= 20) and negative (n= 26) staining groups were 74.1% and 64.6%, respectively, with no significant difference (log rank, P= 0.406). The efficacy of radiotherapy in the group with positive staining of tumor cells was significantly better than in the negative staining group. Immunohistochemical expression of TP in tumor cells is suggested as a useful prognostic factor for uterine cervical squamous cell carcinomas treated with radiotherapy. Choosing therapy for individual cases by referring to factors including TP expression should contribute to an improved prognosis.
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Nakashima Y, Higashizono Y, Nishino N, Kawano H, Islam M, Mishima Y, Kobayashi S, Shoji M, Kubota Y, Yoshikawa M, Kobayashi T, Higaki H, Cho T. Investigation of Neutral Particles Using High Speed Camera and Monte-Carlo Simulation in the GAMMA 10 Central-Cell. FUSION SCIENCE AND TECHNOLOGY 2007. [DOI: 10.13182/fst07-a1320] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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