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Vethe H, Finne K, Skogstrand T, Vaudel M, Vikse BE, Hultstrom M, Placier S, Scherer A, Tenstad O, Marti HPP, Milanesi S, Rocca C, Gregorini M, Corradetti V, Pattonieri EF, Cannone M, Maggi N, Bosio F, Esposito P, Bianco C, Benzoni I, Maestri M, Avanzini MA, Rampino T, Dal Canton A, Kadoya H, Satoh M, Sasaki T, Kashihara N, Pongsakul N, Thongboonkerd V, Hsu HH, Chen KH, Tian YC, Chen YC, Hung CC, Yang CW, Yamamoto Y, Iyoda M, Wada Y, Suzuki T, Matsumoto K, Shindo-Hirai Y, Kuno Y, Saito T, Iseri K, Shibata T, Da Silva AF, Teixeira VC, Schor N, Paterno J, Naves MA, Visiona I, Schor N, Teixeira VP, Borda B, Lengyel C, Varkonyi T, Ivanyi B, Keresztes C, Lazar G, Edamatsu T, Fujieda A, Ezawa A, Itoh Y, Detsika MG, Duann P, Carvalho FF, Teixeira VP, Almeida WS, Schor N, Wagner S, Schnorr J, Glaser J, Gemeinhardt I, Ebert M, Klopfleisch R, Taupitz M, Frangou EA, Rizou M, Prakoura N, Zoidakis J, Vlahou A, Gakiopoulou H, Liapis G, Charonis A, Kayukov I, Parastaeva M, Beresneva O, Ivanova G, Kucher A, Karunnaya H, Zarayski M, Smirnov A, Chandak PG, Smirnov A, Sipovski V, Beresneva O, Parastaeva M, Ivanova G, Kucher A, Sipovski E, Zarayski M, Karunnaya H, Dobronravov V, Kayukov I, Masola V, Zaza G, Granata S, Secchi MF, Onisto M, Lupo A, Gambaro G, Kim JI, Jang HS, Han SJ, Park KM, Grchevska L, Paterno JC, Ramos MDFP, Razvickas CV, Rehder VL, Schor N, Teixeira VP, Raya AI, Pineda CM, Guerrero F, Rios R, Aguilera E, Peralta A, Lopez I, Parastaeva M, Beresneva O, Kucher A, Ivanova G, Kayukov I, Smirnov A, Takenaka T, Inoue T, Miyazaki T, Hayashi M, Suzuki H, Garrido P, Fernandes J, Ribeiro S, Vala H, Belo L, Costa E, Santos-Silva A, Reis F, Shi Y, Tsuboi N, Maruyama S, Matsuo S, Piecha D, Koch S, Steppan S, Loser K. EXPERIMENTAL PATHOLOGY. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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102
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Ma QL, Mizukami S, Kubota T, Zhang XM, Ando Y, Miyazaki T. Abrupt transition from ferromagnetic to antiferromagnetic of interfacial exchange in perpendicularly magnetized L1(0)-MnGa/FeCo tuned by Fermi level position. Phys Rev Lett 2014; 112:157202. [PMID: 24785068 DOI: 10.1103/physrevlett.112.157202] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Indexed: 06/03/2023]
Abstract
An abrupt transition of the interfacial exchange coupling from ferromagnetic to antiferromagnetic was observed in the interface of perpendicularly magnetized L10-MnGa/Fe1-xCox epitaxial bilayers when x was around 25%. By considering the special band structure of the MnGa alloy, we present a model explaining this transition by the spin-polarization reversal of Fe1-xCox alloys due to the rise of the Fermi level as the Co content increases. The effect of interfacial exchange coupling on the coercive force (Hc) and the spin-dependent tunneling effect in perpendicular magnetic tunnel junctions (pMTJs) based on the coupled composite were also studied. Changes from the normal spin valve to inverted magnetoresistance loops corresponding to the coupling transition were observed in pMTJs with MnGa/Fe1-xCox as an electrode.
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Affiliation(s)
- Q L Ma
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-8577 Sendai, Japan
| | - S Mizukami
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-8577 Sendai, Japan
| | - T Kubota
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-8577 Sendai, Japan
| | - X M Zhang
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-8577 Sendai, Japan
| | - Y Ando
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05, Aoba-yama, 980-8579 Sendai, Japan
| | - T Miyazaki
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1, Katahira, 980-8577 Sendai, Japan
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Nakahashi Y, Kamiya Y, Funakoshi K, Miyazaki T, Uchimoto K, Tojo K, Ogawa K, Fukuoka T, Goto T. Role of nerve growth factor-tyrosine kinase receptor A signaling in paclitaxel-induced peripheral neuropathy in rats. Biochem Biophys Res Commun 2014; 444:415-9. [PMID: 24480438 DOI: 10.1016/j.bbrc.2014.01.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 01/20/2014] [Indexed: 12/25/2022]
Abstract
The mechanisms underlying paclitaxel-induced peripheral neuropathy remain unknown. Nerve growth factor (NGF) is a representative neurotrophic factor that maintains neuronal function, promotes survival, and mediates neuropathic pain. We investigated expression levels of NGF and its receptors in the dorsal root ganglia (DRG) and spinal dorsal horn (DH) following paclitaxel treatment. Intraperitoneal (I.P.) administration of paclitaxel induced significant mechanical hypersensitivity and cold allodynia in rats, significantly increased the expression of NGF and its receptor tyrosine kinase receptor A (trkA) in the DRG, and increased NGF expression in the DH. In contrast, paclitaxel treatment did not alter the mRNA levels of NGF or its receptors in the DRG, DH, sciatic nerve, or hindpaw skin. Moreover, expression of NEDD4-2, a negative regulator of trkA, was significantly increased in the DRG of paclitaxel-treated rats. Intrathecal (I.T.) administration of the tyrosine kinase receptor inhibitor k252a significantly alleviated mechanical hypersensitivity in paclitaxel-treated rats. Our results suggest that NGF-trkA signaling is involved in mechanical allodynia in paclitaxel-induced neuropathy.
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Affiliation(s)
- Yusuke Nakahashi
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Yoshinori Kamiya
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan; Department of Anesthesiology, Niigata University Hospital, Niigata 951-8320, Japan; Department of Neuroanatomy, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Kengo Funakoshi
- Department of Neuroanatomy, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Tomoyuki Miyazaki
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan; Department of Physiology, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Kazuhiro Uchimoto
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Kentaro Tojo
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
| | - Kenichi Ogawa
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan; Department of Palliative Care Medicine, Yokohama City University Hospital, Yokohama 236-0004, Japan.
| | - Tetsuo Fukuoka
- Department of Anatomy and Neuroscience, Hyogo College of Medicine, Nishinomiya 663-8501, Japan.
| | - Takahisa Goto
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University, Graduate School of Medicine, Yokohama 236-0004, Japan.
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104
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Mimoto F, Katada H, Kadono S, Igawa T, Kuramochi T, Muraoka M, Wada Y, Haraya K, Miyazaki T, Hattori K. Engineered antibody Fc variant with selectively enhanced FcγRIIb binding over both FcγRIIa(R131) and FcγRIIa(H131). Protein Eng Des Sel 2013; 26:589-98. [PMID: 23744091 PMCID: PMC3785249 DOI: 10.1093/protein/gzt022] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 04/24/2013] [Accepted: 05/08/2013] [Indexed: 12/02/2022] Open
Abstract
Engaging inhibitory FcγRIIb by Fc region has been recently reported to be an attractive approach for improving the efficacy of antibody therapeutics. However, the previously reported S267E/L328F variant with enhanced binding affinity to FcγRIIb, also enhances binding affinity to FcγRIIa(R131) allotype to a similar degree because FcγRIIb and FcγRIIa(R131) are structurally similar. In this study, we applied comprehensive mutagenesis and structure-guided design based on the crystal structure of the Fc/FcγRIIb complex to identify a novel Fc variant with selectively enhanced FcγRIIb binding over both FcγRIIa(R131) and FcγRIIa(H131). This novel variant has more than 200-fold stronger binding affinity to FcγRIIb than wild-type IgG1, while binding affinity to FcγRIIa(R131) and FcγRIIa(H131) is comparable with or lower than wild-type IgG1. This selectivity was achieved by conformational change of the C(H)2 domain by mutating Pro to Asp at position 238. Fc variant with increased binding to both FcγRIIb and FcγRIIa induced platelet aggregation and activation in an immune complex form in vitro while our novel variant did not. When applied to agonistic anti-CD137 IgG1 antibody, our variant greatly enhanced the agonistic activity. Thus, the selective enhancement of FcγRIIb binding achieved by our Fc variant provides a novel tool for improving the efficacy of antibody therapeutics.
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Affiliation(s)
| | | | | | - T. Igawa
- Research Division, Chugai Pharmaceutical Co., Ltd., Gotemba, Shizuoka, Japan
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105
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Otsuka T, Okimoto N, Taiji M, Bowler DR, Miyazaki T. Structural relaxation and binding energy calculations of FK506 binding protein complexes using the large-scale DFT code CONQUEST. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/454/1/012057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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106
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Miyazaki T, Ohigashi H, Komura M, Kobayashi K, Ashikaga T, Isobe M. One-year outcome of patients with intermediate coronary lesions assessed by fractional flow reserve in addition to diagnostic coronary angiogram. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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107
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Miyazaki T, Ohigashi H, Komura M, Kobayashi K, Ashikaga T, Isobe M. Impact of smoking on coronary microcirculatory resistance in patients with coronary artery disease. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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108
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Iwanaga N, Nakamura S, Kajihara T, Imamura Y, Miyazaki T, Izumikawa K, Kakeya H, Yanagihara K, Tashiro T, Sunazuka T, Omura S, Kohno S. P9 The potency of a new erythromycin (EM) derivative, EM900, to reduce the density of the nasopharyngeal Streptococcus pneumoniae colonization. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70254-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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109
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Takeda K, Imamura Y, Ide S, Morinaga Y, Nakamura S, Miyazaki T, Izumikawa K, Kakeya H, Yanagihara K, Tashiro T, Kangawa K, Kohno S. P253 Effect of ghrelin for prevention in murine invasive pulmonary aspergillosis model. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70494-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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110
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Haga A, Okamoto T, Yamada S, Kubota T, Sanpei A, Takahashi S, Nakayama M, Nagai M, Otaka M, Miyazaki T, Nunomura W, Grave E, Itoh H. Zinc-L-carnosine binds to molecular chaperone HSP70 and inhibits the chaperone activity of the protein. J Biochem 2013; 154:249-56. [DOI: 10.1093/jb/mvt041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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111
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Miyazaki T, Kunii M, Jitsuki S, Sano A, Kuroiwa Y, Takahashi T. Social isolation perturbs experience-driven synaptic glutamate receptor subunit 4 delivery in the developing rat barrel cortex. Eur J Neurosci 2013; 37:1602-9. [PMID: 23510259 DOI: 10.1111/ejn.12188] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 02/12/2013] [Accepted: 02/14/2013] [Indexed: 11/27/2022]
Abstract
In neonates, the stress of social isolation can alter developing neural circuits and cause mental illness. However, the molecular and cellular bases for these effects are poorly understood. Experience-driven synaptic AMPA receptor delivery is crucial for circuit organisation during development. In the rat, whisker experience drives the delivery of glutamate receptor subunit 4 (GluA4) but not glutamate receptor subunit 1 (GluA1) to layer 4-2/3 pyramidal synapses in the barrel cortex during postnatal day (P)8-10, whereas GluA1 but not GluA4 is delivered to these synapses during P12-14. We recently reported that early social isolation disrupts experience-driven GluA1 delivery to layer 4-2/3 pyramidal synapses during P12-14. Here, we report that neonatal isolation affects even earlier stages of development by preventing experience-dependent synaptic GluA4 delivery. Thus, social isolation severely affects synaptic maturation throughout early postnatal development.
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Affiliation(s)
- Tomoyuki Miyazaki
- Yokohama City University Graduate School of Medicine, Department of Physiology, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
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112
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Yagi H, Miyazaki T, Tokumoto Y, Aoki Y, Zenki M, Zaima T, Okita S, Yamamoto T, Miyazaki E, Takimiya K, Hino S. Ultraviolet photoelectron spectra of 2,7-diphenyl[1]benzothieno[3,2-b][1]benzothiophene and dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene. Chem Phys Lett 2013. [DOI: 10.1016/j.cplett.2013.02.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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113
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Tanzawa T, Futaki K, Kurabayashi H, Goto K, Yoshihama Y, Hasegawa T, Yamamoto M, Inoue M, Miyazaki T, Maki K. Medical emergency education using a robot patient in a dental setting. Eur J Dent Educ 2013; 17:e114-e119. [PMID: 23279398 DOI: 10.1111/j.1600-0579.2012.00770.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/06/2012] [Indexed: 06/01/2023]
Abstract
INTRODUCTION In an ageing society, the frequency of medical emergencies in a dental setting appears to be increasing because of a growing number of medically compromised patients. However, we currently have no dental-specific simulation environment with advanced reproducibility for medical emergencies. Therefore, we used the robot patient in objective structured clinical examinations (OSCEs) for testing student competence in emergency management. This study aimed to evaluate student responses to medical emergencies in the dental setting. MATERIAL AND METHODS We used 98 fifth-grade dental students at Showa University as subjects and implemented the OSCE task entitled 'Management of medical emergency using a robot patient'. Candidates were asked to manage an emergency situation immediately after local anaesthesia, with one robot patient configured to develop vasovagal syncope and the other to experience adrenaline hypersensitivity. A questionnaire on the educational value of the robot patient was completed after the examination. RESULTS Thirty-two per cent of students could not accurately count her pulse because of an inappropriate method. Moreover, 78% could not correctly attach either the tonometer or pulse oximetry to the patient. Accurate diagnoses were given by only 22% of students, with vasovagal syncope diagnosed by 33% and adrenaline hypersensitivity by 8%. From a questionnaire, 78% of students recognised the usefulness of the robot patient in medical emergency training. CONCLUSION We found that student responses to the emergency situation were poor. The robot patient is useful in dental education for medical emergency training and assessment not only for situation management but also for differential diagnosis.
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Affiliation(s)
- T Tanzawa
- Department of Orthodontics, Showa University School of Dentistry, Tokyo, Japan.
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114
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Baba TT, Ohara-Nemoto Y, Miyazaki T, Nemoto TK. Involvement of geranylgeranylation of Rho and Rac GTPases in adipogenic and RANKL expression, which was inhibited by simvastatin. Cell Biochem Funct 2013; 31:652-9. [DOI: 10.1002/cbf.2951] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 11/20/2012] [Accepted: 12/11/2012] [Indexed: 01/29/2023]
Affiliation(s)
- T. T. Baba
- Department of Oral Molecular Biology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - Y. Ohara-Nemoto
- Department of Oral Molecular Biology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - T. Miyazaki
- Department of Cell Biology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
| | - T. K. Nemoto
- Department of Oral Molecular Biology; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki Japan
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115
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Ohshima Y, Mizuno T, Yamada K, Matsumoto S, Nagakane Y, Kondo M, Kuriyama N, Miyazaki T, Takeda K, Nishimura T, Nakagawa M, Ozasa K, Watanabe Y. Low vitamin and carotenoid levels are related to cerebral white matter lesions. J Nutr Health Aging 2013; 17:456-60. [PMID: 23636547 DOI: 10.1007/s12603-012-0419-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES PURPOSE To determine the effects of vitamins and carotenoids on brain white matter lesions (WMLs), we examined the associations between WMLs with vitamin and carotenoid levels in Japanese middle-aged and elderly subjects. SUBJECTS AND METHODS Four-hundred and sixty-nine healthy participants (male = 317; female = 152) that underwent medical examinations were examined. Deep white matter lesions (DWLs) were detected via magnetic resonance imaging (MRI) in 39 subjects. We evaluated the effects of vitamin and carotenoid levels on DWLs via logistic regression analysis. RESULTS Lower gamma-tocopherol levels were significantly associated with DWLs in all subjects. While lower gamma-tocopherol and vitamin C levels were significantly associated with DWLs in males, lower delta-tocopherol levels were associated with DWLs in females. The associations between DWLs and lower gamma- and delta-tocopherol and vitamin C levels were independent of age, hypertension, or smoking. However, the associations between DWLs and lower alfa-tocopherol were not significant following adjustments for smoking. CONCLUSION Lower carotenoid and vitamin levels were independently associated with cerebral DWLs in Japanese subjects.
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Affiliation(s)
- Y Ohshima
- Department of Neurology and Gerontology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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116
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Kim-Kaneyama JR, Miyauchi A, Lei XF, Arita S, Mino T, Takeda N, Kou K, Eto K, Yoshida T, Miyazaki T, Shioda S, Miyazaki A. Identification of Hic-5 as a novel regulatory factor for integrin αIIbβ3 activation and platelet aggregation in mice. J Thromb Haemost 2012; 10:1867-74. [PMID: 22812543 DOI: 10.1111/j.1538-7836.2012.04856.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Integrin αIIbβ3 plays key roles in platelet aggregation and subsequent thrombus formation. Hydrogen peroxide-inducible clone-5 (Hic-5), a member of the paxillin family, serves as a focal adhesion adaptor protein associated with αIIbβ3 at its cytoplasmic strand. OBJECTIVES Hic-5 function in αIIbβ3 activation and subsequent platelet aggregation remains unknown. To address this question, platelets from Hic-5(-/-) mice were analyzed. METHODS AND RESULTS Hic-5(-/-) mice displayed a significant hemostatic defect and resistance to thromboembolism, which were explained in part by weaker thrombin-induced aggregation in Hic-5(-/-) platelets. Mechanistically, Hic-5(-/-) platelets showed limited activation of αIIbβ3 upon thrombin treatment. Morphological alteration in Hic-5(-/-) platelets after thrombin stimulation on fibrinogen plates was also limited. As a direct consequence, the quantity of actin co-immunoprecipitating with the activated αIIbβ3 was smaller in Hic-5(-/-) platelets than in wild-type platelets. CONCLUSION We identified Hic-5 as a novel and specific regulatory factor for thrombin-induced αIIbβ3 activation and subsequent platelet aggregation in mice.
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Affiliation(s)
- J R Kim-Kaneyama
- Department of Biochemistry, Showa University School of Medicine, Tokyo Department of Clinical Toxicology, Showa University School of Pharmacy, Tokyo, Japan.
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117
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Miyazaki T, Kuwano H. [Perioperative management of esophageal cancer patients with endocrine or metabolic disease]. Kyobu Geka 2012; 65:753-757. [PMID: 22868442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Many esophageal cancer patients have endocrine or metabolic diseases, and surgeons should therefore learn to manage these conditions in the perioperative period. Mortality and morbidity rates are higher in patients with diabetes mellitus( DM) than patients without DM, because DM is a risk factor for conditions such as ischemic heart disease, chronic renal failure, and cerebrovascular disease. Uncontrolled hyperglycemia also increases susceptibility to infection and delays wound healing. Preoperative assessment of blood glucose control and comorbidities is important in patients with DM. Rapid-acting insulin is useful for controlling blood glucose levels in the perioperative period. In patients with thyroid disease, surgery is safest at a time when thyroid hormone levels are normalized. Patients with adrenocortical insufficiency need appropriate perioperative steroid therapy. Surgery for esophageal cancer should be undertaken when endocrine and metabolic diseases are well controlled. Strict perioperative management is required to prevent complications.
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Affiliation(s)
- T Miyazaki
- Department of General Surgical Science, Gunma University, Maebashi, Japan
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118
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Miyazaki T, Takase K, Nakajima W, Tada H, Ohya D, Sano A, Goto T, Hirase H, Malinow R, Takahashi T. Disrupted cortical function underlies behavior dysfunction due to social isolation. J Clin Invest 2012; 122:2690-701. [PMID: 22706303 DOI: 10.1172/jci63060] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 05/09/2012] [Indexed: 01/21/2023] Open
Abstract
Stressful events during early childhood can have a profound lifelong influence on emotional and cognitive behaviors. However, the mechanisms by which stress affects neonatal brain circuit formation are poorly understood. Here, we show that neonatal social isolation disrupts molecular, cellular, and circuit developmental processes, leading to behavioral dysfunction. Neonatal isolation prevented long-term potentiation and experience-dependent synaptic trafficking of α-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptors normally occurring during circuit formation in the rodent barrel cortex. This inhibition of AMPA receptor trafficking was mediated by an increase of the stress glucocorticoid hormone and was associated with reduced calcium/calmodulin-dependent protein kinase type II (CaMKII) signaling, resulting in attenuated whisker sensitivity at the cortex. These effects led to defects in whisker-dependent behavior in juvenile animals. These results indicate that neonatal social isolation alters neuronal plasticity mechanisms and perturbs the initial establishment of a normal cortical circuit, which potentially explains the long-lasting behavioral effects of neonatal stress.
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Affiliation(s)
- Tomoyuki Miyazaki
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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119
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Goto M, Matsuzaki M, Fuchinoue A, Urabe N, Kawagoe N, Takemoto I, Tanaka H, Watanabe T, Miyazaki T, Takeuchi M, Honda Y, Nakanishi K, Urita Y, Shimada N, Nakajima H, Sugimoto M, Goto T. Chronic atherosclerotic mesenteric ischemia that started to develop symptoms just after anaphylaxis. Case Rep Gastroenterol 2012; 6:300-8. [PMID: 22754490 PMCID: PMC3376342 DOI: 10.1159/000339204] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
An 83-year-old woman was referred to our emergency department with acute urticaria and sudden shortness of breath approximately 30 min after taking rectal diclofenac potassium for lumbago. After treatment with adrenaline and corticosteroids, the patient became hemodynamically stable and left the hospital on the next day. She attended our hospital 1 week after the onset of anaphylaxis because of repeated postprandial epigastric pain. No abnormal lesions were found in endoscopy. Radiographic selective catheter angiography revealed chronic mesenteric ischemia caused by atherosclerosis and abundant collateral arteries between the celiac trunk, the superior mesenteric artery and the inferior mesenteric artery. Patients with chronic mesenteric ischemia usually present with a clinical syndrome characterized by painful abdominal cramps and colic occurring typically during the postprandial phase. Fear of eating resulted in malnutrition. She was prescribed proton pump inhibitor, digestants, anticholinergic agents, serine protease inhibitors, prokinetics, antiplatelet agents and transdermal nitroglycerin intermittently, but these had no beneficial effects. It was most probable that this patient with chronic atherosclerotic mesenteric ischemia was suffering from functional abdominal pain syndrome induced by anaphylaxis. Since psychiatric disorders were associated with alterations in the processing of visceral sensation, we facilitated the patient's understanding of functional abdominal pain syndrome with the psychologist. Postprandial abdominal pain gradually faded after administration of these drugs and the patient left the hospital. Developing a satisfactory patient-physician relationship was considered more effective for the management of persistent abdominal pain caused by complicated mechanisms.
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Affiliation(s)
- M. Goto
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - M. Matsuzaki
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - A. Fuchinoue
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - N. Urabe
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - N. Kawagoe
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - I. Takemoto
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - H. Tanaka
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - T. Watanabe
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - T. Miyazaki
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - M. Takeuchi
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - Y. Honda
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - K. Nakanishi
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - Y. Urita
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
- *Yoshihisa Urita, 6-11-1, Omori-Nishi, Ota-Ku, Tokyo 143-8541 (Japan), Tel. +81 3 3762 4151, E-Mail
| | - N. Shimada
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - H. Nakajima
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - M. Sugimoto
- Department of General Medicine and Emergency Care, Toho University School of Medicine, Tokyo, Japan
| | - T. Goto
- Masutani Clinic, Hiroshima, Japan
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120
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Abstract
Linear-scaling methods, or O(N) methods, have computational and memory requirements which scale linearly with the number of atoms in the system, N, in contrast to standard approaches which scale with the cube of the number of atoms. These methods, which rely on the short-ranged nature of electronic structure, will allow accurate, ab initio simulations of systems of unprecedented size. The theory behind the locality of electronic structure is described and related to physical properties of systems to be modelled, along with a survey of recent developments in real-space methods which are important for efficient use of high-performance computers. The linear-scaling methods proposed to date can be divided into seven different areas, and the applicability, efficiency and advantages of the methods proposed in these areas are then discussed. The applications of linear-scaling methods, as well as the implementations available as computer programs, are considered. Finally, the prospects for and the challenges facing linear-scaling methods are discussed.
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Affiliation(s)
- D R Bowler
- London Centre for Nanotechnology, UCL, 17-19 Gordon St, London WC1H 0AH, UK.
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121
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Fujikura D, Ito M, Chiba S, Harada T, Perez F, Reed JC, Uede T, Miyazaki T. CLIPR-59 regulates TNF-α-induced apoptosis by controlling ubiquitination of RIP1. Cell Death Dis 2012; 3:e264. [PMID: 22297296 PMCID: PMC3288345 DOI: 10.1038/cddis.2012.3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tumor necrosis factor-α (TNF-α) has important roles in several immunological events by regulating apoptosis and transcriptional activation of cytokine genes. Intracellular signaling mediated by TNF-receptor-type 1 (TNFR1) is constituted by two sequential protein complexes: Complex-I containing the receptor and Complex-II-containing Caspase-8. Protein modifications, particularly ubiquitination, are associated with the regulation of the formation of these complexes. However, the underlying mechanisms remain poorly defined. Here, we identified CLIP-170-related 59 kDa protein (CLIPR-59) as a novel adaptor protein for TNFR1. Experimental reduction of CLIPR-59 levels prevented induction of apoptosis and activation of caspases in the context of TNF-α signaling. CLIPR-59 binds TNFR1 but dissociates in response to TNF-α stimulation. However, CLIPR-59 is also involved in and needed for the formation of Complex-II. Moreover, CLIPR-59 regulates TNF-α-induced ubiquitination of receptor-interacting protein 1 (RIP1) by its association with CYLD, a de-ubiquitinating enzyme. These findings suggest that CLIPR-59 modulates ubiquitination of RIP1, resulting in the formation of Complex-II and thus promoting Caspase-8 activation to induce apoptosis by TNF-α.
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Affiliation(s)
- D Fujikura
- Department of Bioresources, Hokkaido University Research Center for Zoonosis Control, North-20, West-10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan.
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122
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Abstract
In recent years, with the increasing social awareness of safety in medical practice, improving clinical skills has become very important, especially for recently graduated dentists. Traditionally, mannequins have been used for clinical skill training, but a mannequin is quite different from a real patient because they have no autonomous movement or conversational ability. This indicates that pre-clinical simulation education is inadequate. We have, therefore, developed a robot patient that can reproduce an authentic clinical situation for dental clinical training. The robot patient, designed as a full-body model with a height of 157 cm, has eight degrees of freedom in the head and the ability to perform various autonomous movements. Moreover, saliva secretion and conversation with the trainee can be reproduced. We have introduced the robot patient into an objective structured clinical examination targeted at fifth-grade students in our dental school to evaluate their skills in cavity preparation, whilst considering the safety of the treatment. As a result, many of the students were able to deal appropriately with a patient's unexpected movement. Moreover, results of a questionnaire survey showed that almost all the students recognised the educational value of the robot patient especially for 'risk management', and they preferred the robot patient to traditional mannequins. Practical application of the robot patient in dental clinical education was evaluated through the experiences of the fifth-grade students, which showed the effectiveness of the robot patient in the dental field.
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Affiliation(s)
- T Tanzawa
- Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan.
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123
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Nakajima H, Watanabe T, Miyazaki T, Takeuchi M, Honda Y, Shimada N, Nakanishi K, Urita Y, Sugimoto M. Acute liver dysfunction in the course of norovirus gastroenteritis. Case Rep Gastroenterol 2012; 6:69-73. [PMID: 22423242 PMCID: PMC3304080 DOI: 10.1159/000336202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A 48-year-old female with abdominal pain and malaise who showed delayed symptom of acute gastroenteritis came to see us. Her illness was diagnosed as norovirus infection, but liver dysfunction accompanied this gastroenteritis. We investigated the pathogenesis of this hepatitis for all causes including drugs, but we could not detect norovirus infection. The liver damage improved shortly in course of the gastroenteritis. She recovered completely within 2 weeks without any damage left. Norovirus-induced liver dysfunction is not known, and there is no report in the literature. We report, for the first time, the case of liver dysfunction with norovirus gastroenteritis.
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Affiliation(s)
- H Nakajima
- Department of General Medicine and Emergency Care, Toho University, Tokyo, Japan
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124
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Kiss T, Chainani A, Yamamoto HM, Miyazaki T, Akimoto T, Shimojima T, Ishizaka K, Watanabe S, Chen CT, Fukaya A, Kato R, Shin S. Quasiparticles and Fermi liquid behaviour in an organic metal. Nat Commun 2012; 3:1089. [PMID: 23011143 PMCID: PMC3658098 DOI: 10.1038/ncomms2079] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 08/22/2012] [Indexed: 11/30/2022] Open
Abstract
Many organic metals display exotic properties such as superconductivity, spin-charge separation and so on and have been described as quasi-one-dimensional Luttinger liquids. However, a genuine Fermi liquid behaviour with quasiparticles and Fermi surfaces have not been reported to date for any organic metal. Here, we report the experimental Fermi surface and band structure of an organic metal (BEDT-TTF)(3)Br(pBIB) obtained using angle-resolved photoelectron spectroscopy, and show its consistency with first-principles band structure calculations. Our results reveal a quasiparticle renormalization at low energy scales (effective mass m*=1.9 m(e)) and ω(2) dependence of the imaginary part of the self energy, limited by a kink at ~50 meV arising from coupling to molecular vibrations. The study unambiguously proves that (BEDT-TTF)(3)Br(pBIB) is a quasi-2D organic Fermi liquid with a Fermi surface consistent with Shubnikov-de Haas results.
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Affiliation(s)
- T Kiss
- Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwa, Chiba 277-8581, Japan.
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125
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Takakura K, Kato T, Arihiro S, Miyazaki T, Arai Y, Nakao Y, Komoike N, Itagaki M, Odagi I, Hirohama K, Saruta M, Matsuoka M, Tajiri H. Selective ligation using a detachable snare for small-intestinal polyps in patients with Peutz-Jeghers syndrome. Endoscopy 2011; 43 Suppl 2 UCTN:E264-5. [PMID: 21837607 DOI: 10.1055/s-0030-1256528] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- K Takakura
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
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126
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Hara M, Masuda T, Takada A, Miyazaki T, Suzuki H, Kido A, Saito K. Human STR genotyping of DNA extracted from the stomach contents of a roof rat. Forensic Science International: Genetics Supplement Series 2011. [DOI: 10.1016/j.fsigss.2011.08.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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127
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Miyazaki T, Kunii M, Tada H, Sano A, Kuroiwa Y, Goto T, Malinow R, Takahashi T. Developmental AMPA receptor subunit specificity during experience-driven synaptic plasticity in the rat barrel cortex. Brain Res 2011; 1435:1-7. [PMID: 22197698 DOI: 10.1016/j.brainres.2011.11.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 11/11/2011] [Indexed: 11/26/2022]
Abstract
During early postnatal brain development, experience-driven delivery of AMPA receptors to synapses participates in the initial organization of cortical function. By combining virus-mediated in vivo gene delivery with in vitro whole cell recordings, we identified a subunit-specific developmental program of experience-driven AMPA receptor delivery to synapses in rat barrel cortex. We expressed green fluorescent protein (GFP)-tagged AMPA receptors (GFP-GluR1, or GFP-GluR4) into layer 2/3 pyramidal neurons at two distinct developmental periods, postnatal day (P)8-P10 and P12-P14. Two days after viral infection, acute brain slices were prepared, and synaptic transmission from layer 4 to layer 2/3 was analyzed by whole cell recordings. We found that whisker experience drives GluR4 but not GluR1 into these synapses early in postnatal development (P8-P10). However, at P12-14, GluR1 but not GluR4 is delivered into synapses by whisker experience. This precise developmental plan suggests unique plasticity properties endowed in different AMPA receptor subunits which shape the initial experience-driven organization of cortical function.
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Affiliation(s)
- Tomoyuki Miyazaki
- Yokohama City University Graduate School of Medicine, Department of Physiology, 3-9 Fukuura, Kanazawa-ku, Yokohama 236-0004, Japan
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128
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Takenaka T, Inoue T, Okada H, Ohno Y, Miyazaki T, Chaston DJ, Hill CE, Suzuki H. Altered gap junctional communication and renal haemodynamics in Zucker fatty rat model of type 2 diabetes. Diabetologia 2011; 54:2192-201. [PMID: 21573906 DOI: 10.1007/s00125-011-2175-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Accepted: 03/29/2011] [Indexed: 12/29/2022]
Abstract
AIMS/HYPOTHESIS We examined the link between altered gap junctional communication and renal haemodynamic abnormalities in diabetes in studies performed on Zucker lean (ZL) and the Zucker diabetic fatty (ZDF) rat model of type 2 diabetes. METHODS The abundance of connexin (Cx) 37, 40 and 43 was assessed by western blot and immunohistochemistry. Renal haemodynamics was characterised with GAP peptides, which are Cx mimetics, to inhibit gap junctions as a probe in both strains. RESULTS ZDF rats exhibited higher plasma glucose, 8-epi-prostaglandin F2α excretion, renal plasma flow and GFR than ZL rats. In ZDF rat kidney phosphorylation of Cx43 was enhanced compared with that in ZL rats. Immunohistochemical study revealed that the density of abundance of Cx37 in renin-secreting cells was significantly reduced in ZDF rats. Although renal autoregulation was markedly impaired in ZDF rats, it was preserved in ZL rats. GAP27 for Cx37,43 and for Cx40 impaired renal autoregulation in ZL rats, but failed to induce further alterations in renal autoregulation in ZDF rats. CONCLUSIONS/INTERPRETATION Our findings indicate that ZDF rats have glomerular hyperfiltration with impaired autoregulation. They also demonstrate enhanced phosphorylation of Cxs and reduced production of Cxs in ZDF rat kidney, especially of Cx37 in renin-secreting cells. Finally, our data suggest that an impairment of gap junctional communication in juxtaglomerular apparatus plays a role in altered renal autoregulation in diabetes.
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Affiliation(s)
- T Takenaka
- Department of Nephrology, Faculty of Medicine, Saitama Medical University, 38 Moro-hongo Moroyama, Iruma, Saitama 350-0495, Japan.
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129
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Koh MY, Morita Y, Miyazaki T, Ohtsuki C. In vitroapatite-forming ability of hydrogels derived from sodium carboxymethylcellulose. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1757-899x/18/19/192004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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130
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Tanaka A, Seki M, Yamahira S, Noguchi H, Kosai K, Toba M, Morinaga Y, Miyazaki T, Izumikawa K, Kakeya H, Yamamoto Y, Yanagihara K, Tashiro T, Kohda N, Kohno S. Lactobacillus pentosus strain b240 suppresses pneumonia induced by Streptococcus pneumoniae in mice. Lett Appl Microbiol 2011; 53:35-43. [PMID: 21554343 DOI: 10.1111/j.1472-765x.2011.03079.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AIMS Oral administration of probiotics has been known to improve inflammatory responses against infectious diseases. Here, we describe the inhibitory effect of oral intake of heat-killed Lactobacillus pentosus strain b240 (b240) on pneumococcal pneumonia in a murine experimental model. METHOD AND RESULTS The mice treated with oral b240 for 21 days before Streptococcus pneumoniae infection exhibited prolonged survival time and less body weight loss, compared with saline-treated control mice. Mild pneumonia with significantly reduced secretion of inflammatory cytokines/chemokines according to related mitogen-activated protein kinase signalling molecules (phosphorylated c-Jun N-terminal kinase) was found in b240-treated mice, whereas severe pneumonia with hypercytokinemia was evident in control mice. Prominent reduction in the number of pneumococci and elevated expression of Toll-like receptor 2 and 4 in the lung tissues was concomitantly noted in b240-treated mice. CONCLUSIONS These findings indicate that b240 has inhibitory effects on pneumococcal pneumonia induced by Strep. pneumoniae infection and improves inflammatory tissue responses, resulting in reduced damages to the respiratory tissues. SIGNIFICANCE AND IMPACT OF THE STUDY These results demonstrate that oral administration of b240 might protect host animals from Strep. pneumoniae infection by augmentation of innate immune response.
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Affiliation(s)
- A Tanaka
- Second Department of Internal Medicine, Nagasaki University Hospital, Nagasaki, Japan Otsu Nutraceuticals Research Institute, Otsuka Pharmaceutical Co., Ltd., Shiga, Japan
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132
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Abstract
The materials for the repair of bone defects require bone-inductive and bioabsorbable properties. We developed an apatite-coated hyaluronan (ACH) as a bone-regeneration material. To examine the initial behavior of osteoblast-like cells on ACH and its bone-inductive activity, we evaluated the proliferation and differentiation of osteoblast-like cells grown on ACH in vitro, and examined the effect of ACH on bone regeneration in vivo, comparing these with the effects of an atelocollagen sponge (AS). Hyaluronic acid, cross-linked by divinylsulfone, was freeze-dried and formed apatite in simulated body fluid. MC3T3-E1 osteoblast-like cells were cultured on ACH and AS. Alkaline phosphatase activity and osteocalcin mRNA expression increased more in cells grown on ACH than in those grown on AS. In vivo, round defects were created in rat crania and either filled with ACH or AS or left unfilled (sham group). After surgery, the ACH-treated group showed higher levels of bone formation than the other groups. These findings demonstrate that ACH is more effective than AS in promoting in vitro osteoblast-like cell differentiation and bone formation during the repair of bone defects in vivo, indicating that it may be of use in the treatment of various bone defects.
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Affiliation(s)
- K. Tanaka
- Division of Oral and Maxillofacial Reconstructive Surgery
| | - T. Goto
- Division of Anatomy, Kyushu Dental College, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, 803-8580 Japan
| | - T. Miyazaki
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, 808-0196, Japan
| | - Y. Morita
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, 808-0196, Japan
| | - S. Kobayashi
- Division of Anatomy, Kyushu Dental College, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu, 803-8580 Japan
| | - T. Takahashi
- Division of Oral and Maxillofacial Reconstructive Surgery
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133
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Mizukami S, Wu F, Sakuma A, Walowski J, Watanabe D, Kubota T, Zhang X, Naganuma H, Oogane M, Ando Y, Miyazaki T. Long-lived ultrafast spin precession in manganese alloys films with a large perpendicular magnetic anisotropy. Phys Rev Lett 2011; 106:117201. [PMID: 21469891 DOI: 10.1103/physrevlett.106.117201] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Indexed: 05/25/2023]
Abstract
Spin precession with frequencies up to 280 GHz is observed in Mn(3-δ)Ga alloy films with a perpendicular magnetic anisotropy constant K(u)∼15 M erg/cm(3). The damping constant α, characterizing macroscopic spin relaxation and being a key factor in spin-transfer-torque systems, is not larger than 0.008 (0.015) for the δ=1.46 (0.88) film. Those are about one-tenth of α values for known materials with large K(u). First-principles calculations well describe both low α and large K(u) for these alloys.
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Affiliation(s)
- S Mizukami
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
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134
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Shibata Y, Suzuki D, Omori S, Tanaka R, Murakami A, Kataoka Y, Baba K, Kamijo R, Miyazaki T. The characteristics of in vitro biological activity of titanium surfaces anodically oxidized in chloride solutions. Biomaterials 2010; 31:8546-55. [DOI: 10.1016/j.biomaterials.2010.07.098] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/28/2010] [Indexed: 10/19/2022]
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135
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He H, Emmett MR, Marshall AG, Ji Y, Conrad CA, Priebe W, Colman H, Lang FF, Madden TL, Kristoffersen K, Stockhausen MT, Poulsen HS, Binder ZA, Orr B, Lim M, Weingart JD, Brem H, Olivi A, Riggins GJ, Gallia GL, Litofsky NS, Miller DC, Rath P, Anthony DC, Feng Q, Franklin C, Pei L, Free A, Kirk MD, Shi H, Timmer M, Theiss H, Juerchott K, Ries C, Paron I, Franz W, Selbig J, Guo K, Tonn JC, Schichor C, Zhou YH, Hu Y, Pioli PD, Rajneesh K, Limoli CL, Yu L, Hess KR, Linskey ME, Faber F, Guo K, Jaeger D, Thorsteinsdottir J, Albrecht V, Tonn JC, Schichor C, Price R, Song J, Zimmerman P, Duale H, Rivera A, Kaur B, Parada L, Cook C, Chiocca EA, Kwon CH, Munoz DM, Guha A, Estrada-Bernal A, Van Brocklyn JR, Gu C, Mahasenan KV, Joshi K, Gupta S, Mattson A, Li C, Nakano I, Chi AS, Rheinbay E, Wakimoto H, Gillespie S, Kasif S, Rabkin SD, Martuza RL, Bernstein BE, Skirboll SL, Wurdak H, Zhu S, Romero A, Lorger M, Watson J, Chiang CY, Zhang J, Natu VS, Lairson LL, Walker JR, Trussell CM, Harsh GR, Vogel H, Felding-Habermann B, Orth AP, Miraglia LJ, Rines DR, Schultz PG, Hide T, Takezaki T, Nakamura H, Makino K, Kuratsu JI, Kondo T, Yao J, Kim YW, Koul D, Almeida JS, Weinstein JN, Alfred Yung WK, Joshi K, Miyazaki T, Chaudhury AR, Nakano I, Wong AJ, Del Vecchio C, Mitra S, Han SY, Holgado-Madruga M, Gupta P, Golebiewska A, Brons NH, Bjerkvig R, Niclou SP, Ramm P, Vollmann-Zwerenz A, Beier C, Aigner L, Bogdahn U, Kalbitzer HR, Hau P, Sanzey M, Golebiewska A, Vallar L, Niclou SP, Tamura K, Aoyagi M, Ando N, Ogishima T, Wakimoto H, Yamamoto M, Ohno K, Perin A, Fung KH, Longatti P, Guiot MC, Del Maestro RF, Rossi S, Stechishin O, Weiss S, Stifani S, Goodman L, Gao F, Gumin J, Ezhilarasan R, Love P, George A, Colman H, Lang F, Aldape K, Sulman EP, Soeda A, Lee DH, Shaffrey ME, Oldfield EH, Park DM, Dietrich J, Han R, Noble M, Yang MY, Liu X, Madhankumar AB, Sheehan J, Slagle-Webb B, Connor JR, Fu J, Shen RJ, Colman H, Lang FF, Alfred Yung WK, Koul D, Kaluzova M, Machaidze R, Nduom ENK, Burden CT, Hadjipanayis CG, Lei L, Sonabend A, Guarnieri P, Ludwig T, Rosenfeld S, Bruce J, Canoll P, Vaillant BD, Bhat K, Balasubramaniyam V, Wang S, Gumin J, Sulman E, Lang F, Aldape K, Colman H, Sulman EP, Ezhilarasan R, Goodman LD, Love PN, George A, Aldape K, Soules M, Zhu T, Flack C, Talsma C, Hamm L, Muraszko K, Fan X, Aoyagi M, Matsuoka Y, Tamura K, Ando N, Kawano Y, Ohno K, Kobayashi D, Kumagai J, Frank RT, Najbauer J, Aboody KS, Aboody KS, Najbauer J, Metz M, Garcia E, Aramburo S, Valenzuela V, Gutova M, Annala AJ, Barish M, Danks M, Kim SU, Portnow J, Hofstetter C, Gursel D, Mubita L, Holland E, Boockvar J, Monje M, Freret M, Masek M, Edwards MS, Fisher PG, Vogel H, Beachy P. Stem Cells. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Otsuru N, Inui K, Yamashiro K, Miyazaki T, Takeshima Y, Kakigi R. P14-21 Assessing A-delta fiber function with lidocaine using intra-epidermal electrical stimulation. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60779-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hayashi M, Kamiya Y, Itoh H, Higashi T, Miyazaki T, Funakoshi K, Yamashita N, Goshima Y, Andoh T, Yamada Y, Goto T. Intrathecally administered Sema3A protein attenuates neuropathic pain behavior in rats with chronic constriction injury of the sciatic nerve. Neurosci Res 2010; 69:17-24. [PMID: 20888378 DOI: 10.1016/j.neures.2010.09.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 08/24/2010] [Accepted: 09/21/2010] [Indexed: 10/19/2022]
Abstract
Semaphorins, one of the repulsive axonal guidance factors during development, are produced under pathological conditions in adult animals. In the neuropathic pain state associated with peripheral nerve injury, synaptic reorganization occurs in spinal cord dorsal horn. In the present study, we investigated the roles of intrathecal administration of Sema3A, a secreted semaphorin, in the spinal cord of chronic constriction injury (CCI) model rat. Neuropilin 1 (NPR1) and Plexin A (PlexA), co-receptors of Sema3A, were expressed in the dorsal horn of naïve rats. NPR1, and not PlexA, protein expression increased in the dorsal spinal cord of CCI rats. Recombinant Sema3A protein attenuated mechanical allodynia and heat hyperalgesia in CCI rats, whereas heat-inactivated Sema3A had no effect. Immunohistochemistry revealed that Sema3A partially restored the decrease of isolectin B4-positive unmyelinated nerve terminals in lamina II of the ipsilateral dorsal horn of CCI rats. Contrary to our expectations, Sema3A did not change the distribution of myelinated fibers in lamina II at 7 days after CCI. Those results suggested that the suppressive role for Sema3A in the development of neuropathic pain associated with peripheral nerve injury in adult rats, which seemed to be independent from prevention of the myelinated fiber sprouting into lamina II.
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Affiliation(s)
- Michiko Hayashi
- Department of Anesthesiology and Critical Care Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku, Yokohama, Japan
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138
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Mohi MM, Kuratani M, Miyazaki T, Yoshida T. Histopathological studies on Vibrio harveyi- infected tiger puffer, Takifugu rubripes (Temminck et Schlegel), cultured in Japan. J Fish Dis 2010; 33:833-840. [PMID: 20726939 DOI: 10.1111/j.1365-2761.2010.01184.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Vibrio harveyi infection occurred with a moderate mortality in tiger puffer, Takifugu rubripes (Temminck et Schlegel), in autumn 2007, at a mariculture farm in western Japan. The diseased fish showed nodular lesions in the branchial chamber and the inner surface of the operculum. Histopathologically, the lesions comprised granulation tissue containing many suppurative foci allowing propagation of the bacteria and granuloma encapsulating abscesses with a decrease in bacteria. The bacteria were disseminated in visceral organs including the spleen, kidney, liver, and myocardium, resulting in the formation of granulomatous lesions. Two groups of tiger puffer juveniles were artificially infected by an intramuscular injection with an isolate (1.0_10(8) CFU/fish). During the experimental period, 20% mortality occurred within 4-6 days post-infection (d.p.i). The fish sampled on 4 d.p.i showed abscesses in the lateral musculature at the injection site. The fish sampled 5 d.p.i. displayed the production of granulation tissue containing many suppurative foci, which replaced the necrotic dermis and lateral musculature. Surviving fish (15 d.p.i.) had granulomatous lesions in the lateral musculature at the injection site. Pyogranulomatosis is pathognomonic in V. harveyi infection of tiger puffer.
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Affiliation(s)
- M M Mohi
- Graduate school of Bioresources, Mie University, Tsu, Mie, Japan.
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139
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Miyazaki T. [Neuroanatomical studies on molecular mechanisms underlying hetero- and homosynaptic competitions in cerebellar synaptic circuit development]. Kaibogaku Zasshi 2010; 85:115-116. [PMID: 20865928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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140
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Miyazaki T, Nakata M, Kasagi S, Iwami T, Yamauchi M, Kawamura S. Molecular cloning of ultraviolet-sensitive visual pigment in juvenile Champsocephalus gunnari (Channichthyidae). Polar Biol 2010. [DOI: 10.1007/s00300-010-0875-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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141
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Matsuda K, Miura E, Miyazaki T, Kakegawa W, Emi K, Narumi S, Fukazawa Y, Ito-Ishida A, Kondo T, Shigemoto R, Watanabe M, Yuzaki M. Cbln1 Is a Ligand for an Orphan Glutamate Receptor 2, a Bidirectional Synapse Organizer. Science 2010; 328:363-8. [DOI: 10.1126/science.1185152] [Citation(s) in RCA: 270] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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142
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Abstract
An overview of the CONQUEST linear scaling density functional theory (DFT) code is given, focusing particularly on the scaling behaviour on modern high-performance computing platforms. We demonstrate that essentially perfect linear scaling and weak parallel scaling (with fixed number of atoms per processor core) can be achieved, and that DFT calculations on millions of atoms are now possible.
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Affiliation(s)
- D R Bowler
- Thomas Young Centre, UCL, Gower St, London WC1E 6BT, UK.
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143
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Takahashi D, Fujihara M, Azuma H, Miyazaki T, Uchimura D, Wakamoto S, Sato S, Kato T, Ikeda H. Stimulation of human neutrophils with sera containing HLA Class I alloantibody causes preferential degranulation of azurophilic granules and secretory vesicles. Vox Sang 2010; 98:560-6. [PMID: 20158696 DOI: 10.1111/j.1423-0410.2010.01311.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND OBJECTIVES The activation of neutrophils by human leukocyte antigen (HLA) Class I alloantibody is thought to be involved in transfusion-related acute lung injury. Neutrophils contain various biological substances in four groups of granules, including secretory vesicles, azurophilic granules, specific granules and gelatinase granules. To characterize the activation of neutrophils by HLA Class I alloantibody, we investigated whether HLA Class I alloantibody could cause the degranulation of these groups of granules either coordinately or selectively. MATERIALS AND METHODS Sera containing HLA-A24 alloantibody were incubated with neutrophils in a washed whole blood system. CD11b expression (secretory vesicles) on neutrophils was analysed by flow cytometry, and the secretion of markers of each granule was determined by ELISA. RESULTS The treatment of cross-matching-positive neutrophils with sera containing HLA-A24 alloantibody caused the significant expression of CD11b, and the significant secretion of neutrophil elastase and myeloperoxidase, azurophilic granule markers and heparin-binding protein (HBP), which is localized in secretory vesicles and azurophilic granules when compared with cross-matching-negative neutrophils. In contrast, no significant differences were observed in the secretion of lactoferrin, a marker of specific granules, and matrix methalloproteinase-9, a marker of gelatinase granules between cross-matching-positive and cross-matching-negative cells upon stimulation with sera. CD11b expression and secretion of HBP by serum was partially inhibited by p38 mitogen-activated protein (MAP)-kinase inhibitors. CONCLUSION Neutrophils activated with sera containing HLA Class I alloantibody caused the preferential degranulation of azurophilic granules and secretory vesicles. This process was at least in part mediated by p38 MAP kinase-involved signal transduction.
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Affiliation(s)
- D Takahashi
- Japanese Red Cross, Hokkaido Red Cross Blood Center, Sapporo, Japan
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144
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145
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Miyazaki T, Takase K, Roberto M, Takahashi T. Mechanisms underlying disruption of cortical function by neonatal isolation. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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146
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Omori S, Shibata Y, Arimoto T, Igarashi T, Baba K, Miyazaki T. Micro-organism and Cell Viability on Antimicrobially Modified Titanium. J Dent Res 2009; 88:957-62. [DOI: 10.1177/0022034509343426] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
When titanium is anodized by discharge in NaCl solution, both antimicrobial activity and osteoconductivity are conferred. The viability of adherent micro-organisms and cells on antimicrobial titanium remains uncertain. We hypothesized that a thin peroxidation barrier would efficiently destroy adherent bacteria, whereas adherent osteoblastic cells would be viable, since these cells adhere to the surface indirectly though serum proteins. The efficacy of antimicrobial titanium appears to be based on peroxidation, since peroxidation products were detected in parallel with the destruction of bacterial cell-surface structures. The peroxidation effect of antimicrobial titanium was confined to the surface within narrow limits. The viability of osteoblastic cells on the surface was strongly dependent on the presence of serum protein, whereas that of adherent Streptococcus mutans was not affected by the presence of serum proteins. Therefore, differences in the adherent systems used by bacteria and osteoblastic cells are important determinants of their viability on antimicrobial titanium.
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Affiliation(s)
- S. Omori
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - Y. Shibata
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - T. Arimoto
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - T. Igarashi
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - K. Baba
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
| | - T. Miyazaki
- Department of Prosthodontics, Showa University School of Dentistry, 2-1-2, Kitasenzoku, Ohta-ku, Tokyo 145-8515, Japan
- Department of Oral Biomaterials and Technology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan; and
- Department of Oral Microbiology, Showa University School of Dentistry, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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147
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Esaki T, Osada H, Nakao Y, Yamamoto T, Maeda M, Miyazaki T, Sumiyoshi M, Mori K. Surgical management for glossopharyngeal neuralgia associated with cardiac syncope: two case reports. Br J Neurosurg 2009; 21:599-602. [PMID: 18071988 DOI: 10.1080/02688690701627138] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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148
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Miyazaki T, Chiuve S, Sacks F, Ridker P, Libby P, Sagara M, Aikawa M. Abstract: 1071 PLASMA PENTRAXIN 3 LEVELS REFLECT METABOLIC SYNDROME IN PATIENTS WITH CORONARY ARTERY DISEASE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70412-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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149
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Hiki M, Shimada K, Kiyanagi T, Kurata T, Kume A, Sumiyoshi K, Inoue N, Fukao K, Miyazaki T, Hirose K, Daida H. Abstract: P1183 MIGLITOL IMPROVES POSTPRANDIAL HYPERGLYCEMIA, HYPERINSULINEMIA AND ENDOTHELIAL DYSFUNCTION IN TYPE 2 DIABETIC PATIENTS WITH CORONARY ARTERY DISEASE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71210-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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150
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Kiyanagi T, Miyauchi K, Shimada K, Hiki M, Kume A, Miyazaki T, Sumiyoshi K, Daida H. Abstract: P392 DIFFERENCES IN VASCULAR RESPONSE AND RENAL FUNCTION FOLLOWING MODERATE OR AGGRESSIVE LIPID LOWERING THERAPY IN HYPERCHOLESTEROLEMIC PATIENTS WITH CARDIOVASCULAR DISEASES. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70687-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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