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Nakamura T, Kobayashi N, Kondo Y, Satou Y, Tostevin JA, Utsuno Y, Aoi N, Baba H, Fukuda N, Gibelin J, Inabe N, Ishihara M, Kameda D, Kubo T, Motobayashi T, Ohnishi T, Orr NA, Otsu H, Otsuka T, Sakurai H, Sumikama T, Takeda H, Takeshita E, Takechi M, Takeuchi S, Togano Y, Yoneda K. Deformation-driven p-wave halos at the drip line: 31Ne. PHYSICAL REVIEW LETTERS 2014; 112:142501. [PMID: 24765946 DOI: 10.1103/physrevlett.112.142501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Indexed: 06/03/2023]
Abstract
The halo structure of 31Ne is studied using 1n-removal reactions on C and Pb targets at 230 MeV/nucleon. A combined analysis of the cross sections of these nuclear and Coulomb dominated reactions that feed directly the 30Ne ground-state reveals 31Ne to have a small neutron separation energy, 0.15(-0.10)(+0.16) MeV, and spin-parity 3/2-. Consistency of the data with reaction and large-scale shell-model calculations identifies 31Ne as deformed and having a significant p-wave halo component, suggesting that halos are more frequent occurrences at the neutron drip line.
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Suzuki S, Takechi M, Ohtsubo T, Nishimura D, Fukuda M, Kuboki T, Nagashima M, Suzuki T, Yamaguchi T, Ozawa A, Ohishi H, Moriguchi T, Sumikama T, Geissel H, Aoi N, Chen RJ, Fang DQ, Fukuda N, Fukuoka S, Furuki H, Inabe N, Ishibashi Y, Ito T, Izumikawa T, Kameda D, Kubo T, Lantz M, Lee C, Ma YG, Mihara M, Momota S, Nagae D, Nishikiori R, Niwa T, Ohnishi T, Okumura K, Ogura T, Sakurai H, Sato K, Shimbara Y, Suzuki H, Takeda H, Takeuchi S, Tanaka K, Uenishi H, Winkler M, Yanagisawa Y. Measurements of interaction cross sections for 22–35Na isotopes. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146603084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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78
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Takechi M, Suzuki S, Nishimura D, Fukuda M, Ohtsubo T, Nagashima M, Suzuki T, Yamaguchi T, Ozawa A, Moriguchi T, Ohishi H, Sumikama T, Geissel H, Ishihara M, Aoi N, Chen RJ, Fang DQ, Fukuda N, Fukuoka S, Furuki H, Inabe N, Ishibashi Y, Itoh T, Izumikawa T, Kameda D, Kubo T, Lee CS, Lantz M, Ma YG, Matsuta K, Mihara M, Momota S, Nagae D, Nishikiori R, Niwa T, Ohnishi T, Okumura K, Ogura T, Sakurai H, Sato K, Shimbara Y, Suzuki H, Takeda H, Takeuchi S, Tanaka K, Uenishi H, Winkler M, Yanagisawa Y, Watanabe S, Minomo K, Tagami S, Shimada M, Kimura M, Matsumoto T, Shimizu YR, Yahiro M. Search for halo nucleus in Mg isotopes through the measurements of reaction cross sections towards the vicinity of neutron drip line. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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79
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Matsushita M, Takeuchi S, Aoi N, Doornenbal P, Lee J, Li K, Motobayashi T, Scheit H, Steppenbeck D, Wang H, Baba H, Bazin D, Càceres L, Crawford H, Fallon P, Gernhäuser R, Gibelin J, Go S, Grévy S, Hinke C, Hoffman CR, Hughes R, Ideguchi E, Ieki K, Jenkins D, Kobayashi N, Kondo Y, Krücken R, Le Bleis T, Lee G, Matta A, Michimasa S, Nakamura T, Ota S, Petri M, Sako T, Sakurai H, Shimoura S, Steiger K, Takahashi K, Takechi M, Togano Y, Winkler R, Yoneda K. In-beam γ-ray spectroscopy of 38,40,42Si. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602070] [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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80
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Tshoo K, Satou Y, Bhang H, Choi S, Nakamura T, Kondo Y, Deguchi S, Kawada Y, Kobayashi N, Nakayama Y, Tanaka K, Tanaka N, Togano Y, Aoi N, Ishihara M, Motobayashi T, Otsu H, Sakurai H, Takeuchi S, Yoneda K, Delaunay F, Gibelin J, Marqués F, Orr N, Honda T, Matsushita M, Kobayashi T, Miyashita Y, Sumikama T, Yoshinaga K, Shimoura S, Sohler D, Zheng T, Cao Z, Li Z. Neutron occupancy of 0 d5/2orbital in 24O. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602103] [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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81
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Doornenbal P, Scheit H, Takeuchi S, Aoi N, Li K, Matsushita M, Steppenbeck D, Wang H, Baba H, Crawford H, Hoffman CR, Hughes R, Ideguchi E, Kobayashi N, Kondo Y, Lee J, Michimasa S, Motobayashi T, Sakurai H, Takechi M, Togano Y, Winkler R, Yoneda K. In-beam γ-ray spectroscopy of ^34,36,38Mg: merging the N=20 and N=28 shell quenching. PHYSICAL REVIEW LETTERS 2013; 111:212502. [PMID: 24313483 DOI: 10.1103/physrevlett.111.212502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 09/30/2013] [Indexed: 06/02/2023]
Abstract
Neutron-rich N=22, 24, 26 magnesium isotopes were studied via in-beam γ-ray spectroscopy at the RIKEN Radioactive Isotope Beam Factory following secondary fragmentation reactions on a carbon target at ≈200 MeV/nucleon. In the one- and two-proton removal channels from 39Al and 40Si beams, two distinct γ-ray transitions were observed in 38Mg, while in the one-proton removal reaction from 37Al a new transition was observed in addition to the known 2(1)(+)→0(g.s.)(+) decay. From the experimental systematics and comparison to theoretical predictions it is concluded that the transitions belong to the 2(1)(+)→0(g.s.)(+) and 4(1)(+)→2(1)(+) decays in 36Mg and 38Mg, respectively. For 34Mg, previously reported 2(1)(+) and 4(1)(+) level energies were remeasured. The deduced E(4(1)(+))/E(2(1)(+)) ratios for 34,36,38Mg of 3.14(5), 3.07(5), and 3.07(5) are almost identical and suggest the emergence of a large area of deformation extending from the N=20 to the N=28 shell quenching.
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Takahashi Y, Takeuchi S, Miyata S. High throughput cell sorting device using dielectrophoresis and fluid-induced shear force. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2013:4466-9. [PMID: 24110725 DOI: 10.1109/embc.2013.6610538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cell sorting is important technology in many areas such as medical diagnosis in hospitals and cell engineering. Dielectrophoresis (DEP) is one of the promising approaches for cell separation because it does not require any fluorescent dye or antibody. In our previous study, we developed DEP cells sorting device, however the amount of throughput was not sufficient. In this study, we developed high throughput cell sorting device using dielectrophoretic and fluid-induced shear force. As the pilot study, mixed solution containing bovine chondrocytes and polystyrene beads were precisely separated using our novel DEP cell sorting device.
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83
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Yamashita M, Miyata S, Takeuchi S, Inoue H. Separation method of blood constituents using dielectrophoresis and flow-induced shear force. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2013:4462-5. [PMID: 24110724 DOI: 10.1109/embc.2013.6610537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Platelet Rich Plasma (PRP) contains many cytokines for treatment skin diseases. The final goal of this study is to develop the dielectrophoretic PRP purification system enriching the platelets in a label-free manner from whole blood solution. In this study, we characterized dielectrophoretic properties of red blood cell, white blood cell, and platelet for the fundamental study. Moreover, purification of PRP was performed to eliminate red and white blood cells using dielectrophoretic and flow-induced shear force.
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84
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Takeuchi S, Kuramochi H, Tahara T. Ultraviolet-resonance femtosecond stimulated Raman study of the initial events in photoreceptor chromophore. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134108002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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85
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Takeuchi S, Matsushita M, Aoi N, Doornenbal P, Li K, Motobayashi T, Scheit H, Steppenbeck D, Wang H, Baba H, Bazin D, Càceres L, Crawford H, Fallon P, Gernhäuser R, Gibelin J, Go S, Grévy S, Hinke C, Hoffman CR, Hughes R, Ideguchi E, Jenkins D, Kobayashi N, Kondo Y, Krücken R, Le Bleis T, Lee J, Lee G, Matta A, Michimasa S, Nakamura T, Ota S, Petri M, Sako T, Sakurai H, Shimoura S, Steiger K, Takahashi K, Takechi M, Togano Y, Winkler R, Yoneda K. Well developed deformation in 42Si. PHYSICAL REVIEW LETTERS 2012; 109:182501. [PMID: 23215274 DOI: 10.1103/physrevlett.109.182501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 09/19/2012] [Indexed: 06/01/2023]
Abstract
Excited states in (38,40,42) Si nuclei have been studied via in-beam γ-ray spectroscopy with multinucleon removal reactions. Intense radioactive beams of ^{40}S and (44)S provided at the new facility of the RIKEN Radioactive Isotope Beam Factory enabled γ-γ coincidence measurements. A prominent γ line observed with an energy of 742(8) keV in (42) Si confirms the 2(+) state reported in an earlier study. Among the γ lines observed in coincidence with the 2^{+} → 0+ transition, the most probable candidate for the transition from the yrast 4(+) state was identified, leading to a 4(1)+) energy of 2173(14) keV. The energy ratio of 2.93(5) between the 2(1)+ and 4(1)(+) states indicates well-developed deformation in (42) Si at N = 28 and Z = 14. Also for 38,40)Si energy ratios with values of 2.09(5) and 2.56(5) were obtained. Together with the ratio for (42)Si, the results show a rapid deformation development of Si isotopes from N = 24 to N = 28.
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86
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Hirano T, Takeuchi S. Serum cathepsin-B levels and urinary-excretion of cathepsin-B in the patients with colorectal-cancer - possible indicators for tumor malignancy. Int J Oncol 2012; 4:151-3. [PMID: 21566905 DOI: 10.3892/ijo.4.1.151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Serum cathepsin B levels and urinary excretion of cathepsin B in patients with colorectal cancers were significantly higher than those in the control non-cancer patients. Moreover, cancer tissue cathepsin B content was significantly higher than that in the normal tissue. After radical curative operations for colorectal cancers, both the serum cathepsin B levels and urinary excretion of cathepsin B were restored to the control values. These results suggest a possible role of lysosomal enzyme, cathepsin B, in the pathogenesis of tumor growth, and also suggest that these parameters might be possible indicators for tumor malignancy.
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87
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Honda J, Takeuchi S, Fukamachi H, Takahashi S. Insulin-like growth factor-I and its receptor in mouse pituitary glands. Zoolog Sci 2012; 15:573-9. [PMID: 18462039 DOI: 10.2108/0289-0003(1998)15[573:igfair]2.0.co;2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/1998] [Accepted: 03/31/1998] [Indexed: 11/17/2022]
Abstract
Insulin-like growth factor-I (IGF-I) is produced in the liver and other peripheral tissues in response to growth hormone (GH) stimuli. IGF-I regulates diverse physiological functions in an autocrine and/or paracrine manner. IGF-I and IGF-I receptor (type-I receptor) are expressed in human and rat pituitary glands. However, the cell types of IGF-I-expressing cells and target cells of IGF-I in the pituitary glands are not known. The present study was aimed to identify the cell types of IGF-I-expressing cells and of its type-I receptor-expressing cells in mouse pituitary glands. In the mouse pituitary glands, IGF-I mRNA and IGF-I receptor mRNA were detected by reverse transcription-polymerase chain reaction (RT-PCR). IGF-I-expressing cells and its receptor-expressing cells were detected by non-radioisotopic in situ hybridization using mouse IGF-I cDNA and IGF-I receptor cDNA probes, and their cell types were immunocytochemically determined using antibodies raised against pituitary hormones. We found that somatotrophs expressed both IGF-I and IGF-I receptors, and some of corticotrophs expressed IGF-I receptors. Co-localization of IGF-I and GH in the same cultured pituitary cells was observed by dual-labelling immunocytochemistry. The present study demonstrated that pituitary IGF-I produced in somatotrophs regulated functions of somatotrophs and corticotrophs in an autocrine and/or paracrine manner.
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88
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Shiraga M, Komatsu N, Teshigawara K, Okada A, Takeuchi S, Fukamachi H, Takahashi S. Epidermal growth factor stimulates proliferation of mouse uterine epithelial cells in primary culture. Zoolog Sci 2012; 17:661-6. [PMID: 18517302 DOI: 10.2108/zsj.17.661] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/1999] [Accepted: 01/23/2000] [Indexed: 11/17/2022]
Abstract
Epidermal growth factor (EGF) is one of growth factors that are thought to mediate the stimulatory effects of estrogen on the proliferation of uterine epithelial cells. The present study was attempted to obtain direct evidence for the mitogenic effects of EGF on uterine epithelial cells, and to prove that EGF and EGF receptors are expressed in these cells. Mouse uterine epithelial cells were isolated from immature female mice and cultured with or without EGF for 5 days. EGF (1 to 100 ng/ml) significantly increased the number of uterine epithelial cells, and the maximal growth (141.9+/- 8.3% of controls) was obtained at a dose of 10 ng/ml. In addition, EGF (0.1 to 100 ng/ml) increased the number of DNA-synthesizing cells immunocytochemically detected by bromodeoxyuridine uptake to the nucleus. Northern blot analysis revealed that the uterine epithelial cells expressed both EGF mRNA (4.7 kb) and EGF receptor mRNAs (10.5, 6.6, and 2.7 kb) These results suggest that the proliferation of uterine epithelial cells is regulated by the paracrine and/or autocrine action of EGF. Our previous study demonstrated the mitogenic effect of IGF-I on uterine epithelial cells. To examine whether the EGF- and IGF-I signaling act at the same level in the regulation of the proliferation of uterine epithelial cells, the cultured cells were simultaneously treated with IGF-I and EGF. IGF-I was found to additively stimulate the mitogenic effects of EGF, suggesting that the EGF-induced growth of uterine epithelial cells is distinct from IGF-I-induced growth.
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89
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Moon SK, Takeuchi S, Kambe T, Tsuchiya T, Masuda S, Nagao M, Sasaki R. Erythropoietin enhancer stimulates production of a recombinant protein by Chinese hamster ovary (CHO) cells under hypoxic condition. Cytotechnology 2012; 25:79-88. [PMID: 22358882 DOI: 10.1023/a:1007963800362] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Oxygen is a limiting nutrient in animal cell culture and its supply is still worthy of improvement for production of useful proteins with a high efficiency. From a different point of view, development of the system by which a high productivity can be maintained even under hypoxic condition as well as under normoxic condition may be important. A number of hypoxia-inducible genes have been found in eucaryotic cells and the induction in most cases, if not all, is due to hypoxic activation of the gene transcription. Transcription of erythropoietin gene is highly hypoxia-inducible and the induction is achieved by binding of a protein, which is widely distributed in animal cells, to a short DNA stretch (erythropoietin enhancer) in the 3' flanking region of erythropoietin gene. Using a hepatoma cell line (Hep3B) that produces the endogenous erythropoietin in an oxygen-dependent manner and Chinese hamster ovary cells that have been widely used for production of recombinant proteins, we show that, under hypoxic condition, the erythropoietin enhancer can activate not only the promoter of erythropoietin gene but also promoters of cytomegalovirus early genes and eucaryotic polypeptide chain elongation factor gene, both of which are very active in animal cells under normoxic condition.
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90
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Nakagawa T, Takeuchi S, Yamada T, Yano S. Met Kinase Inhibitor E7050 Reverses Three Different Mechanisms of Hepatocyte Growth Factor-Induced Tyrosine Kinase Inhibitor Resistance in EGFR Mutant Lung Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32299-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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91
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Yuki S, Komatsu Y, Nakatsumi H, Kobayashi Y, Takeuchi S, Sogabe S, Miyagishima T, Kato T, Hatanaka K, Nakamura M, Kudo M, Akakura N, Sonoda N, Munakata M, Sakata Y. Updated Analysis: Phase II Trial of Combined Chemotherapy with Irinotecan, S-1, and Bevacizumab (IRIS/Bev) in Patients with Metastatic Colorectal Cancer: Hokkaido Gastrointestinal Cancer Study Group (HGCSG) Trial. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32186-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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92
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Tshoo K, Satou Y, Bhang H, Choi S, Nakamura T, Kondo Y, Deguchi S, Kawada Y, Kobayashi N, Nakayama Y, Tanaka KN, Tanaka N, Aoi N, Ishihara M, Motobayashi T, Otsu H, Sakurai H, Takeuchi S, Togano Y, Yoneda K, Li ZH, Delaunay F, Gibelin J, Marqués FM, Orr NA, Honda T, Matsushita M, Kobayashi T, Miyashita Y, Sumikama T, Yoshinaga K, Shimoura S, Sohler D, Zheng T, Cao ZX. N = 16 spherical shell closure in 24O. PHYSICAL REVIEW LETTERS 2012; 109:022501. [PMID: 23030155 DOI: 10.1103/physrevlett.109.022501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Indexed: 06/01/2023]
Abstract
The unbound excited states of the neutron drip-line isotope 24O have been investigated via the 24O(p,p')23O + n reaction in inverse kinematics at a beam energy of 62 MeV/nucleon. The decay energy spectrum of 24O* was reconstructed from the momenta of 23O and the neutron. The spin parity of the first excited state, observed at E(x) = 4.65±0.14 MeV, was determined to be J(π) = 2+ from the angular distribution of the cross section. Higher-lying states were also observed. The quadrupole transition parameter β2 of the 2(1)+ state was deduced, for the first time, to be 0.15±0.04. The relatively high excitation energy and small β2 value are indicative of the N = 16 shell closure in 24O.
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93
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Chiba T, Takeuchi S, Esaki H, Yamamura K, Kurihara Y, Moroi Y, Furue M. Topical application of PPARα (but not β/δ or γ) suppresses atopic dermatitis in NC/Nga mice. Allergy 2012; 67:936-42. [PMID: 22583373 DOI: 10.1111/j.1398-9995.2012.02844.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2012] [Indexed: 11/26/2022]
Abstract
BACKGROUND Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors, which regulate not only adipogenesis and proliferation/differentiation but also the immune response of cells. Because topical application of the activators of some PPAR isoforms improved clinical symptoms in patients with atopic dermatitis (AD), we investigated the role of PPAR activators using a murine AD model in NC/Nga mice; to the best of our knowledge, this has not been previously reported. METHODS Activators of three PPAR isoforms (α, β/δ, γ) were topically applied on inflamed skin in a murine AD model that was developed by repeated topical application of mite antigen in NC/Nga mice. The efficacy of each topical PPAR activator was evaluated immunologically and serologically. RESULTS Topical application of the PPARα activator, but not of the activators of PPARβ/δ or PPARγ, improved clinical dermatitis, reduced inflammatory cell infiltration in the dermis, and alleviated the elevation of serum IgE levels. In addition, PPARα expression was downregulated in the epidermis in our murine AD model, as is seen in patients with AD. CONCLUSIONS Topical application of PPARα activator could be a potent therapeutic agent for patients with AD and could take the place of topical steroid treatments.
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Togano Y, Yamada Y, Iwasa N, Yamada K, Motobayashi T, Aoi N, Baba H, Bishop S, Cai X, Doornenbal P, Fang D, Furukawa T, Ieki K, Kawabata T, Kanno S, Kobayashi N, Kondo Y, Kuboki T, Kume N, Kurita K, Kurokawa M, Ma YG, Matsuo Y, Murakami H, Matsushita M, Nakamura T, Okada K, Ota S, Satou Y, Shimoura S, Shioda R, Tanaka KN, Takeuchi S, Tian W, Wang H, Wang J, Yoneda K. Hindered proton collectivity in 16(28)S12: possible magic number at Z=16. PHYSICAL REVIEW LETTERS 2012; 108:222501. [PMID: 23003590 DOI: 10.1103/physrevlett.108.222501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Indexed: 06/01/2023]
Abstract
The reduced transition probability B(E2;0(gs)(+)→2(1)(+)) for (28)S was obtained experimentally using Coulomb excitation at 53 MeV/nucleon. The resultant B(E2) value 181(31) e(2)fm(4) is smaller than the expectation based on empirical B(E2) systematics. The double ratio |M(n)/M(p)|/(N/Z) of the 0(gs)(+)→2(1)(+) transition in (28)S was determined to be 1.9(2) by evaluating the M(n) value from the known B(E2) value of the mirror nucleus (28)Mg, showing the hindrance of proton collectivity relative to that of neutrons. These results indicate the emergence of the magic number Z=16 in the |T(z)|=2 nucleus (28)S.
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95
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Kawakami T, Takeuchi S, Arimura Y, Soma Y. Elevated antilysosomal-associated membrane protein-2 antibody levels in patients with adult Henoch-Schönlein purpura. Br J Dermatol 2012; 166:1206-12. [PMID: 22309950 DOI: 10.1111/j.1365-2133.2012.10884.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Henoch-Schönlein purpura (HSP) is characterized by IgA-containing immune complexes within leucocytoclastic vasculitis. Lysosomal-associated membrane protein-2 (LAMP-2) was first identified as part of a systematic search for antineutrophil cytoplasmic antibody (ANCA) antigens expressed on neutrophils and endothelial cells. OBJECTIVES To investigate the presence of ANCA in patients with adult HSP and microscopic polyangiitis (MPA), and to measure serum LAMP-2 antibody levels in these patients. METHODS Twenty-four adult patients with HSP, eight with MPA and 24 normal healthy controls were examined. ANCA detection was performed using indirect immunofluorescence (IIF), a direct enzyme-linked immunosorbent assay (ELISA) and a capture ELISA specific for myeloperoxidase (MPO) and proteinase 3 (PR3). We measured other ANCA-associated antibodies including anti-LAMP-2 antibody in serum using ELISA. Immunohistochemical (IHC) staining was used for anti-LAMP-2 antibody expression in patient skin biopsies. To determine the cut-off value of the serum anti-LAMP-2 antibody, a receiver operating characteristic (ROC) curve was constructed using statistical analysis software (JMP 8·0·2; SAS Institute Inc., Cary, NC, U.S.A.). RESULTS The sera of all patients with HSP were negative for MPO-ANCA and PR3-ANCA by direct ELISA and by capture ELISA. However, ANCA was present in 17 (71%) of the 24 patients with HSP based on IIF. In contrast, we found MPO-ANCA in all eight patients with MPA using both ELISA methods. We found serum anti-LAMP-2 antibody levels in HSP significantly higher than in MPA and in healthy individuals (P = 0·002 and P = 0·00167, respectively). The area under the curve of serum anti-LAMP-2 antibody between HSP and MPA was 0·8698 by ROC analysis. The optimal cut-off point was 0·267 U mL(-1) (sensitivity 1·000, specificity 0·583). We found a significant positive correlation between serum anti-LAMP-2 antibody levels and serum IgA levels in HSP (r(s) = 0·731, P = 0·00226). Anti-LAMP-2 antibody overexpression in IHC staining was present in 20 (83%) of the patients with HSP. The overexpression was observed within the neutrophils and endothelial cells of leucocytoclastic vasculitis. There was a significant positive correlation between IHC staining score and positive serum anti-LAMP-2 antibody. The 24 patients with HSP and the eight patients with MPA were negative for antiazurocidin antibodies, antibactericidal permeability increasing protein antibodies, anticathepsin G antibodies, antielastase antibodies, antilactoferrin antibodies and antilysozyme antibodies. CONCLUSIONS We suggest that anti-LAMP-2 antibody could play some role in the pathogenesis of adult HSP, and have excluded a role for MPO-ANCA and PR3-ANCA. We propose that measuring serum anti-LAMP-2 antibody could be a feasible method of differential diagnosis between HSP and MPA.
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Akasaka E, Matsuzaki Y, Kimura K, Ikenaga S, Takeuchi S, Nakano H, Sawamura D. Normolipidaemic xanthomatosis with systemic involvement of the skin, bone and pharynx. Clin Exp Dermatol 2012; 37:305-7. [DOI: 10.1111/j.1365-2230.2011.04187.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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97
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Mineshige S, Ohsuga K, Takeuchi S. Disk modelling by radiation-magnetohydrodynamic simulations. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20123906005] [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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Takeuchi S, Miyazaki K, Sagane F, Fukutsuka T, Jeong SK, Abe T. Electrochemical properties of graphite electrode in propylene carbonate-based electrolytes containing lithium and calcium ions. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.06.062] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Takeuchi S, Otani N, Nawashiro H. Serum adiponectin after ischemic stroke. Acta Neurol Scand 2011; 124:149; author reply 150. [PMID: 21732921 DOI: 10.1111/j.1600-0404.2011.01492.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yan X, Takahara M, Xie L, Oda Y, Nakahara T, Uchi H, Takeuchi S, Tu Y, Moroi Y, Furue M. Stromal expression of cathepsin K in squamous cell carcinoma. J Eur Acad Dermatol Venereol 2011; 25:362-5. [PMID: 20524946 DOI: 10.1111/j.1468-3083.2010.03743.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Cathepsin K (CTSK), a cysteine protease with strong collagenolytic and elastolytic properties involved in extracellular matrix turnover, may be produced by neoplastic cells as well as stromal macrophages and fibroblasts. Its expression is suggested as associated with increased invasive and metastatic potential. OBJECTIVES The aim of this study is to examine stromal expression of cathepsin K in skin tumors. METHODS A series of 13 normal skin and 109 skin tumours, including 51 benign and 58 malignant epidermal tumours were tested for CTSK and Ki-67 expression by immunohistochemical analysis. RESULTS Stromal CTSK expression and the tumoral Ki-67 labelling index were significantly higher in invasive squamous cell carcinoma (SCC) than in other epidermal tumours. CONCLUSION Cathepsin K-positive stromal fibroblasts may play a crucial role in SCC progression by promoting extracellular matrix degradation, thereby facilitating SCC growth and invasion into surrounding tissue and vasculature. CTSK inhibitors may be a potential novel therapeutic option to decrease SCC progression.
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