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Sato H, Castrillon E, Cairns B, Bendixen K, Wang K, Nakagawa T, Wajima K, Svensson P. Intramuscular pH modulates glutamate-evoked masseter muscle pain magnitude in humans. Eur J Pain 2015; 20:106-15. [DOI: 10.1002/ejp.697] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2015] [Indexed: 11/10/2022]
Affiliation(s)
- H. Sato
- Department of Dentistry & Oral Surgery; School of Medicine; Keio University; Tokyo Japan
- Department of Dentistry & Oral Surgery; Kawasaki Municipal Kawasaki Hospital; Japan
| | - E.E. Castrillon
- Department of Clinical Oral Physiology; School of Dentistry; Aarhus University; Denmark
- Scandinavian Center for Orofacial Neuroscience (SCON); Huddinge Sweden
| | - B.E. Cairns
- Faculty of Pharmaceutical Sciences; The University of British Columbia; Vancouver Canada
- Center for Sensory-Motor Interaction; The Faculty of Medicine; Department of Health Science and Technology; Aalborg University; Denmark
| | - K.H. Bendixen
- Department of Clinical Oral Physiology; School of Dentistry; Aarhus University; Denmark
- Scandinavian Center for Orofacial Neuroscience (SCON); Huddinge Sweden
| | - K. Wang
- Center for Sensory-Motor Interaction; The Faculty of Medicine; Department of Health Science and Technology; Aalborg University; Denmark
| | - T. Nakagawa
- Department of Dentistry & Oral Surgery; School of Medicine; Keio University; Tokyo Japan
| | - K. Wajima
- Department of Dentistry & Oral Surgery; School of Medicine; Keio University; Tokyo Japan
| | - P. Svensson
- Department of Clinical Oral Physiology; School of Dentistry; Aarhus University; Denmark
- Scandinavian Center for Orofacial Neuroscience (SCON); Huddinge Sweden
- Department of Dental Medicine; Karolinska Institute; Huddinge Sweden
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Yatani H, Komiyama O, Matsuka Y, Wajima K, Muraoka W, Ikawa M, Sakamoto E, De Laat A, Heir GM. Systematic review and recommendations for nonodontogenic toothache. J Oral Rehabil 2014; 41:843-52. [PMID: 25040436 DOI: 10.1111/joor.12208] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2014] [Indexed: 01/26/2023]
Abstract
Nonodontogenic toothache is a painful condition that occurs in the absence of a clinically evident cause in the teeth or periodontal tissues. The purpose of this review is to improve the accuracy of diagnosis and the quality of dental treatment regarding nonodontogenic toothache. Electronic databases were searched to gather scientific evidence regarding related primary disorders and the management of nonodontogenic toothache. We evaluated the level of available evidence in scientific literature. There are a number of possible causes of nonodontogenic toothache and they should be treated. Nonodontogenic toothache can be categorised into eight groups according to primary disorders as follows: 1) myofascial pain referred to tooth/teeth, 2) neuropathic toothache, 3) idiopathic toothache, 4) neurovascular toothache, 5) sinus pain referred to tooth/teeth, 6) cardiac pain referred to tooth/teeth, 7) psychogenic toothache or toothache of psychosocial origin and 8) toothache caused by various other disorders. We concluded that unnecessary dental treatment should be avoided.
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Affiliation(s)
- H Yatani
- Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
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Sato H, Shibata M, Shimizu T, Shibata S, Toriumi H, Ebine T, Kuroi T, Iwashita T, Funakubo M, Kayama Y, Akazawa C, Wajima K, Nakagawa T, Okano H, Suzuki N. Differential cellular localization of antioxidant enzymes in the trigeminal ganglion. Neuroscience 2013; 248:345-58. [PMID: 23774632 DOI: 10.1016/j.neuroscience.2013.06.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 05/31/2013] [Accepted: 06/01/2013] [Indexed: 01/30/2023]
Abstract
Because of its high oxygen demands, neural tissue is predisposed to oxidative stress. Here, our aim was to clarify the cellular localization of antioxidant enzymes in the trigeminal ganglion. We found that the transcriptional factor Sox10 is localized exclusively in satellite glial cells (SGCs) in the adult trigeminal ganglion. The use of transgenic mice that express the fluorescent protein Venus under the Sox10 promoter enabled us to distinguish between neurons and SGCs. Although both superoxide dismutases 1 and 2 were present in the neurons, only superoxide dismutase 1 was identified in SGCs. The enzymes relevant to hydrogen peroxide degradation displayed differential cellular localization, such that neurons were endowed with glutathione peroxidase 1 and thioredoxin 2, and catalase and thioredoxin 2 were present in SGCs. Our immunohistochemical finding showed that only SGCs were labeled by the oxidative damage marker 8-hydroxy-2'-deoxyguanosine, which indicates that the antioxidant systems of SGCs were less potent. The transient receptor potential vanilloid subfamily member 1 (TRPV1), the capsaicin receptor, is implicated in inflammatory hyperalgesia, and we demonstrated that topical capsaicin application causes short-lasting mechanical hyperalgesia in the face. Our cell-based assay revealed that TRPV1 agonist stimulation in the presence of TRPV1 overexpression caused reactive oxygen species-mediated caspase-3 activation. Moreover, capsaicin induced the cellular demise of primary TRPV1-positive trigeminal ganglion neurons in a dose-dependent manner, and this effect was inhibited by a free radical scavenger and a pancaspase inhibitor. This study delineates the localization of antioxidative stress-related enzymes in the trigeminal ganglion and reveals the importance of the pivotal role of reactive oxygen species in the TRPV1-mediated caspase-dependent cell death of trigeminal ganglion neurons. Therapeutic measures for antioxidative stress should be taken to prevent damage to trigeminal primary sensory neurons in inflammatory pain disorders.
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Affiliation(s)
- H Sato
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; Department of Dentistry and Oral Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; Japan Society for the Promotion of Science, 8 Ichiban-cho, Chiyoda-ku, Tokyo 102-8472, Japan
| | - M Shibata
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
| | - T Shimizu
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - S Shibata
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - H Toriumi
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - T Ebine
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - T Kuroi
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - T Iwashita
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - M Funakubo
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - Y Kayama
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - C Akazawa
- Department of Biochemistry and Biophysics, Graduate School of Health and Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan
| | - K Wajima
- Department of Dentistry and Oral Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - T Nakagawa
- Department of Dentistry and Oral Surgery, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - H Okano
- Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
| | - N Suzuki
- Department of Neurology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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Hirabayashi H, Hirosawa H, Kobayashi H, Murata Y, Edwards PG, Fomalont EB, Fujisawa K, Ichikawa T, Kii T, Lovell JEJ, Moellenbrock GA, Okayasu R, Inoue M, Kawaguchi N, Kameno S, Shibata KM, Asaki Y, Bushimata T, Enome S, Horiuchi S, Miyaji T, Umemoto T, Migenes V, Wajima K, Nakajima J, Morimoto M, Ellis J, Meier DL, Murphy DW, Preston RA, Smith JG, Tingay SJ, Traub DL, Wietfeldt RD, Benson JM, Claussen MJ, Flatters C, Romney JD, Ulvestad JS, D’Addario LR, Langston GI, Minter AH, Carlson BR, Dewdney PE, Jauncey DL, Reynold JE, Taylor AR, McCulloch PM, Cannon WH, Gurvits LI, Mioduszewski AJ, Schilizzi RT, Booth RS. Overview and initial results of the very long baseline interferometry space observatory programme. Science 1998; 281:1825-9. [PMID: 9743489 DOI: 10.1126/science.281.5384.1825] [Citation(s) in RCA: 127] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
High angular resolution images of extragalactic radio sources are being made with the Highly Advanced Laboratory for Communications and Astronomy (HALCA) satellite and ground-based radio telescopes as part of the Very Long Baseline Interferometry (VLBI) Space Observatory Programme (VSOP). VSOP observations at 1.6 and 5 gigahertz of the milli-arc-second-scale structure of radio quasars enable the quasar core size and the corresponding brightness temperature to be determined, and they enable the motions of jet components that are close to the core to be studied. Here, VSOP images of the gamma-ray source 1156+295, the quasar 1548+056, the ultraluminous quasar 0014+813, and the superluminal quasar 0212+735 are presented and discussed.
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Affiliation(s)
- H Hirabayashi
- H. Hirabayashi, H. Hirosawa, H. Kobayashi, Y. Murata, P. G. Edwards, E. B. Fomalont, K. Fujisawa, T. Ichikawa, T. Kii, J. E. J. Lovell, G. A. Moellenbrock, and R. Okayasu are with the Institute of Space and Astronautical Science, Sagamihara, Kanagawa 22
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