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Hamaguchi Y, Kondoh T, Fukuda M, Yamasaki K, Yoshiura KI, Moriuchi H, Morii M, Muramatsu M, Minami T, Osato M. Leukopenia, macrocytosis, and thrombocytopenia occur in young adults with Down syndrome. Gene 2022; 835:146663. [PMID: 35690282 DOI: 10.1016/j.gene.2022.146663] [Citation(s) in RCA: 0] [Impact Index Per Article: 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] [Received: 11/09/2021] [Revised: 05/03/2022] [Accepted: 06/06/2022] [Indexed: 11/04/2022]
Abstract
Down syndrome (DS) is a common congenital disorder caused by trisomy 21. Due to the increase in maternal age with population aging and advances in medical treatment for fatal complications in their early childhood, the prevalence and life expectancy of DS individuals have greatly increased. Despite this rise in the number of DS adults, their hematological status remains poorly examined. Here, we report that three hematological abnormalities, leukopenia, macrocytosis, and thrombocytopenia, develop as adult DS-associated features. Multi- and uni-variate analyses on hematological data collected from 51 DS and 60 control adults demonstrated that young adults with DS are at significantly higher risk of (i) myeloid-dominant leukopenia, (ii) macrocytosis characterized by high mean cell volume (MCV) of erythrocytes, and (iii) lower platelet counts than the control. Notably, these features were more pronounced with age. Further analyses on DS adults would provide a deeper understanding and novel research perspectives for multiple aging-related disorders in the general population.
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Affiliation(s)
- Yo Hamaguchi
- Department of Pediatrics, National Hospital Organization Nagasaki Medical Center, Omura, Japan; Department of Human Genetics, Atomic Bomb Disease Institute, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuro Kondoh
- The Misakaenosono Mutsumi Developmental, Medical and Welfare Center, Nagasaki, Japan
| | - Masafumi Fukuda
- The Misakaenosono Mutsumi Developmental, Medical and Welfare Center, Nagasaki, Japan
| | - Kazumi Yamasaki
- Clinical Research Center, National Hospital Organization Nagasaki Medical Center, Omura, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Atomic Bomb Disease Institute, Division of Advanced Preventive Medical Sciences and Leading Medical Research Core Unit, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Mariko Morii
- International Research Center for Medical Sciences, Kumamoto University, Japan
| | - Masashi Muramatsu
- Center for Animal Resources and Development, Kumamoto University, Japan
| | - Takashi Minami
- Center for Animal Resources and Development, Kumamoto University, Japan
| | - Motomi Osato
- International Research Center for Medical Sciences, Kumamoto University, Japan; Cancer Science Institute of Singapore, National University of Singapore, Singapore; Department of Pediatrics, National University of Singapore, Singapore.
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Satoh C, Kondoh T, Shimizu H, Kinoshita A, Mishima H, Nishimura G, Miyazaki M, Okano K, Kumai Y, Yoshiura KI. Brothers with novel compound heterozygous mutations in COL27A1 causing dental and genital abnormalities. Eur J Med Genet 2020; 64:104125. [PMID: 33359165 DOI: 10.1016/j.ejmg.2020.104125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/29/2020] [Revised: 12/03/2020] [Accepted: 12/17/2020] [Indexed: 01/15/2023]
Abstract
COL27A1 encodes a collagen type XXVII alpha 1 chain. It is the product of this gene that provides the structural support of connective tissue and is reported to be the causative gene of Steel syndrome (OMIM #615155). The primary symptoms of patients with this defect are consistent with systemic bone disease; however, recent reports note findings of intellectual disability and hearing loss. In this study, we identified novel COL27A1 compound heterozygous variants in two brothers with rhizomelia and congenital hip dislocation as well as dental and genital abnormalities that have not yet been reported in Steel syndrome. This variant, of maternal origin, caused an amino acid substitution of arginine for glycine, c.2026G>C or p.G676R, in the collagen helix domain, which is assumed to damage the structure of the helix. The paternally transmitted variant, c.2367G>A, is located at the 3' end of exon 12, and cDNA analysis revealed a splicing alteration. These novel, compound heterozygous COL27A1 variants might indicate an association of the gene with tooth and genital abnormalities.
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Affiliation(s)
- Chisei Satoh
- Department of Otolaryngology-Head and Neck Surgery, Unit of Translation Medicine, Japan; Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disabilities, Misakaenosono Mutsumi Developmental, Medical and Welfare Center, Isahaya, Japan
| | - Hitomi Shimizu
- Department of Pediatrics, Saiseikai Nagasaki Hospital, Nagasaki, Japan
| | - Akira Kinoshita
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hiroyuki Mishima
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Gen Nishimura
- Center for Intractable Diseases, Saitama Medical University Hospital, Saitama, Japan
| | | | - Kunihiko Okano
- Department of Orthopaedic Surgery, Nagasaki Prefectural Center for Handicapped Children, Isahaya, Japan
| | - Yoshihiko Kumai
- Department of Otolaryngology-Head and Neck Surgery, Unit of Translation Medicine, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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Mishima H, Suzuki H, Doi M, Miyazaki M, Watanabe S, Matsumoto T, Morifuji K, Moriuchi H, Yoshiura KI, Kondoh T, Kosaki K. Evaluation of Face2Gene using facial images of patients with congenital dysmorphic syndromes recruited in Japan. J Hum Genet 2019; 64:789-794. [PMID: 31138847 DOI: 10.1038/s10038-019-0619-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/16/2019] [Accepted: 05/16/2019] [Indexed: 11/09/2022]
Abstract
An increasing number of genetic syndromes present a challenge to clinical geneticists. A deep learning-based diagnosis assistance system, Face2Gene, utilizes the aggregation of "gestalt," comprising data summarizing features of patients' facial images, to suggest candidate syndromes. Because Face2Gene's results may be affected by ethnicity and age at which training facial images were taken, the system performance for patients in Japan is still unclear. Here, we present an evaluation of Face2Gene using the following two patient groups recruited in Japan: Group 1 consisting of 74 patients with 47 congenital dysmorphic syndromes, and Group 2 consisting of 34 patients with Down syndrome. In Group 1, facial recognition failed for 4 of 74 patients, while 13-21 of 70 patients had a diagnosis for which Face2Gene had not been trained. Omitting these 21 patients, for 85.7% (42/49) of the remainder, the correct syndrome was identified within the top 10 suggested list. In Group 2, for the youngest facial images taken for each of the 34 patients, Down syndrome was successfully identified as the highest-ranking condition using images taken from newborns to those aged 25 years. For the oldest facial images taken at ≥20 years in each of 17 applicable patients, Down syndrome was successfully identified as the highest- and second-highest-ranking condition in 82.2% (14/17) and 100% (17/17) of the patients using images taken from 20 to 40 years. These results suggest that Face2Gene in its current format is already useful in suggesting candidate syndromes to clinical geneticists, using patients with congenital dysmorphic syndromes in Japan.
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Affiliation(s)
- Hiroyuki Mishima
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
| | - Hisato Suzuki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Michiko Doi
- Department of Pediatrics, Nagasaki University Hospital, Nagasaki, Japan
| | - Mutsuko Miyazaki
- Department of Pediatrics, Nagasaki Prefectural Children Medical Welfare Center, Isahaya, Japan
| | - Satoshi Watanabe
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tadashi Matsumoto
- Division of Developmental Disabilities, Misakaenosono Mutsumi Developmental, Medical and Welfare Center, Isahaya, Japan
| | - Kanako Morifuji
- Department of Nursing, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disabilities, Misakaenosono Mutsumi Developmental, Medical and Welfare Center, Isahaya, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
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Uehara T, Suzuki H, Okamoto N, Kondoh T, Ahmad A, O'Connor BC, Yoshina S, Mitani S, Kosaki K, Takenouchi T. Pathogenetic basis of Takenouchi-Kosaki syndrome: Electron microscopy study using platelets in patients and functional studies in a Caenorhabditis elegans model. Sci Rep 2019; 9:4418. [PMID: 30872706 PMCID: PMC6418278 DOI: 10.1038/s41598-019-40988-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 08/15/2018] [Accepted: 02/27/2019] [Indexed: 01/25/2023] Open
Abstract
The combined phenotype of thrombocytopenia accompanied by intellectual disability in patients with a de novo heterozygous mutation, i.e., p.Tyr64Cys in CDC42, signifies a clinically recognizable novel syndrome that has been eponymized as “Takenouchi-Kosaki syndrome” (OMIM #616737). In the present study, a detailed phenotypic analysis performed for a total of five patients with Takenouchi-Kosaki syndrome revealed that intellectual disability, macrothrombocytopenia, camptodactyly, structural brain abnormalities with sensorineural deafness, hypothyroidism, and frequent infections comprise the cardinal features of this condition. A morphologic analysis of platelets derived from three affected individuals was performed using electron microscopy. The platelets of the three patients were large and spherical in shape. Furthermore, platelet α-granules were decreased, while vacuoles were increased. We further performed a functional analysis of p.Tyr64Cys in CDC42 through CRISPR/Cas9-mediated gene editing in a Caenorhabditis elegans model. This functional analysis suggested that the mutant allele has hypomorphic effects. Takenouchi-Kosaki syndrome is clinically recognizable by the combined phenotype of intellectual disability, macrothrombocytopenia, camptodactyly, structural brain abnormalities with sensorineural deafness, hypothyroidism, and frequent infections as well as the identification of a heterozygous de novo mutation in CDC42, i.e., p.Tyr64Cys.
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Affiliation(s)
- Tomoko Uehara
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Hidenori Suzuki
- Division of Morphological and Biomolecular Research, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Tatsuro Kondoh
- Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | - Ayesha Ahmad
- Division of Pediatric Genetics, Metabolism and Genomic Medicine, Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
| | - Bridget C O'Connor
- Division of Pediatric Genetics, Metabolism and Genomic Medicine, Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
| | - Sawako Yoshina
- Department of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Shohei Mitani
- Department of Physiology, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Toshiki Takenouchi
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan.
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Ushijima T, Kawaguchi K, Matsumoto T, Takagi M, Kondoh T, Nishimura G, Iida A, Ikegawa S, Haga N, Kato G. Double non-contiguous fractures in a patient with spondylo-epiphyseal dysplasia with spinal ankylosis treated with open and percutaneous spinal fixation technique: a case report. BMC Res Notes 2018; 11:106. [PMID: 29415765 PMCID: PMC5804039 DOI: 10.1186/s13104-018-3227-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/01/2018] [Indexed: 12/04/2022] Open
Abstract
Background Patients with ankylosing spines are susceptible to developing spinal fractures even with minor trauma and can develop early or late neurological injuries. These fractures require early and aggressive surgical management to enable spinal stability and/or neural decompression. Being highly unstable by nature, they require relatively long segment instrumentation and fusion, which can increase paravertebral soft tissue damage and perioperative bleeding. The purpose of this report is to describe a rare case of traumatic double fractures at the cervico-thoracic and thoraco-lumbar transition zones in ankylosing spine with spondylo-epiphyseal dysplasia (SED) of unknown cause, which were successfully treated with a combined open and percutaneous spinal fusion procedure. Case presentation A 46-year-old woman who was diagnosed with non-contiguous fractures in cervico-thoracic and thoraco-lumbar junction zones among multiple injuries sustained in a traffic accident was treated with hybrid techniques for posterior instrumentation with an open approach using a computed tomography (CT)-based navigation system and percutaneous pedicle-screwing method. She regained mobility to pre-admission levels and started walking on crutches 3 months postoperatively. Genetic testing for the cause of SED revealed no mutation in the COL2A1 or TRPVR4 genes. The union of fractured spine was confirmed on CT scan 1 year postoperatively. Conclusion This is the first report of double spinal fractures in an ankylosing spine with genetically undetermined spondyloepiphyseal dysplasia. A long-segment posterior instrumentation procedure incorporating the invasive treatment of spinal fractures in ankylosing spondylitis or diffuse idiopathic hyperostosis was effective.
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Affiliation(s)
- Takahiro Ushijima
- Department of Spine Surgery, Saga Medical Centre, Koseikan, 400 Nakabaru Kase-Machi, Saga, 840-8571, Japan.,Department of Trauma Centre, Saga Medical Centre, Koseikan, 400 Nakabaru Kase-Machi, Saga, 840-8571, Japan
| | - Kenichi Kawaguchi
- Department of Spine Surgery, Saga Medical Centre, Koseikan, 400 Nakabaru Kase-Machi, Saga, 840-8571, Japan.,Department of Orthopedic Surgery, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Tadashi Matsumoto
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental Medical and Welfare Center, 570-1 Konagaichomaki, Isahaya, 859-0164, Japan
| | - Masaki Takagi
- Department of Endocrinology and Metabolism, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashisdai Fuchu, Tokyo, 183-8561, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental Medical and Welfare Center, 570-1 Konagaichomaki, Isahaya, 859-0164, Japan
| | - Gen Nishimura
- Department of Radiology, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashisdai Fuchu, Tokyo, 183-8561, Japan
| | - Aritoshi Iida
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Shiroganedai Minato-Ku, Tokyo, 108-8639, Japan
| | - Shiro Ikegawa
- Laboratory of Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, 4-6-1 Shiroganedai Minato-Ku, Tokyo, 108-8639, Japan
| | - Nobuhiko Haga
- Department of Rehabilitation Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Go Kato
- Department of Spine Surgery, Saga Medical Centre, Koseikan, 400 Nakabaru Kase-Machi, Saga, 840-8571, Japan. .,Department of Trauma Centre, Saga Medical Centre, Koseikan, 400 Nakabaru Kase-Machi, Saga, 840-8571, Japan.
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6
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Affiliation(s)
- K Ito
- Oral and Maxillofacial Surgery Unit; Faculty of Health Science; University of Adelaide; Adelaide South Australia Australia
- Department of Maxillofacial Surgery; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - K Takahashi
- Department of Maxillofacial Surgery; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - T Eda
- Department of Maxillofacial Surgery; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - T Kondoh
- Department of Maxillofacial Surgery; Nihon University School of Dentistry at Matsudo; Matsudo Japan
| | - A Goss
- Oral and Maxillofacial Surgery Unit; Faculty of Health Science; University of Adelaide; Adelaide South Australia Australia
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7
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Kondoh T, Hayashi T, Kawano Y, Kusama Y, Sugie T, Hirata M, Miura Y. CO2Laser Collective Thomson Scattering Diagnostic of α-Particles in Burning Plasmas. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Kondoh
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - T. Hayashi
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - Y. Kawano
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - T. Sugie
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
| | - M. Hirata
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki, 305-8577, Japan
| | - Y. Miura
- Japan Atomic Energy Agency, Naka, Ibaraki, 311-0193, Japan
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Kondoh T, Pundt LL, Blount JP, Conrad JA, Low WC. Transplantation of Human Fetal Tissue from Spontaneous Abortions to a Rodent Model of Parkinson's Disease. Cell Transplant 2017; 5:69-75. [PMID: 8665079 DOI: 10.1177/096368979600500112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of human fetal tissue from elective abortions for cell transplantation therapies has been the subject of considerable controversy. Because of concerns regarding the use of tissue from elective abortions, tissue from spontaneous abortions has been suggested as an alternate donor source. In the present study we have evaluated human fetal tissue from spontaneous abortions to assess its viability, growth potential, and functional expression. Viable cells (Grade I) from a donor (7 wk postconception) were transplanted as a suspension into the striatum of rats with unilateral 6-OHDA lesions of the nigrostriatal pathway. A second group of animals received solid grafts of tissue from a Grade I donor 14 wk postconception. Tissue from Grade II and III specimens were not sufficiently viable for transplantation. Locomotor responses were monitored over a period of 15 wk and revealed an amelioration of rotational asymmetry by animals that received tissue from the 7 wk donor. Animals receiving tissue from the 14 wk donor showed no functional improvement. We found numerous graft-derived tyrosine hydroxylase (TH) immunopositive neurons contained within the transplantation site, and a rich plexus of TH-immunopositive fibers extending into the striatum of animals receiving tissue from the 7 wk donor. Animals receiving tissue from the 14 wk donor exhibited tissue necrosis at the transplant site and were devoid of TH-immunopositive neurons. These results suggest that human fetal ventral mesencephalic cells from spontaneous abortions can survive and develop after transplantation, and rectify locomotor deficits associated with experimental parkinsonism if the donor tissue is of the appropriate gestational age at the time of implantation. Our study further suggests, however, that the availability of tissue from spontaneous abortions of sufficient viability is quite limited and may thus restrict its potential use in cell transplantation therapies for Parkinson's disease.
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Affiliation(s)
- T Kondoh
- Department of Neurosurgery, University of Minnesota Medical School, Minneapolis 55455, USA
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Kondoh T, Abe H, Sato-Okoshi W. Reproduction and larval development of two sympatric Pseudopolydora species (Annelida: Spionidae) in Japan. INVERTEBR REPROD DEV 2017. [DOI: 10.1080/07924259.2017.1318095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- T. Kondoh
- Laboratory of Biological Oceanography, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - H. Abe
- Laboratory of Biological Oceanography, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
- Laboratory of Marine Ecology, Faculty of Science, Toho University, Funabashi, Japan
| | - W. Sato-Okoshi
- Laboratory of Biological Oceanography, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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10
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Sugie T, Hatae T, Koide Y, Fujita T, Kusama Y, Nishitani T, Isayama A, Sato M, Shinohara K, Asakura N, Konoshima S, Kubo H, Takenaga H, Kawano Y, Kondoh T, Nagashima A, Fukuda T, Sunaoshi H, Naito O, Kitamura S, Tsukahara Y, Sakasai A, Sakamoto Y, Suzuki T, Tobita K, Nemoto M, Morioka A, Ishikawa M, Ishida S, Isei N, Oyama N, Neyatani Y, Itami K, Sakurai S, Tamai H, Tsuchiya K, Higashijima S, Nakano T, Nagaya S, Chiba S, Lee S, Shitomi M. Diagnostics System of JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Sugie
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Hatae
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Koide
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Asakura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Konoshima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Kubo
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Takenaga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kawano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Nagashima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Fukuda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Sunaoshi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Kitamura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Tsukahara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Sakasai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Sakamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tobita
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Nemoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Morioka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Ishikawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Isei
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - N. Oyama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Itami
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Tamai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tsuchiya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Higashijima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nakano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Nagaya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Chiba
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Lee
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Shitomi
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-01 Mukoyama, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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11
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Kamada Y, Fujita T, Ishida S, Kikuchi M, Ide S, Takizuka T, Shirai H, Koide Y, Fukuda T, Hosogane N, Tsuchiya K, Hatae T, Takenaga H, Sato M, Nakamura H, Naito O, Asakura N, Kubo H, Higashijima S, Miura Y, Yoshino R, Shimizu K, Ozeki T, Hirayama T, Mori M, Sakamoto Y, Kawano Y, Isayama A, Ushigusa K, Ikeda Y, Kimura H, Fujii T, Imai T, Nagami M, Takeji S, Oikawa T, Suzuki T, Nakano T, Oyama N, Sakurai S, Konoshima S, Sugie T, Tobita K, Kondoh T, Tamai H, Neyatani Y, Sakasai A, Kusama Y, Itami K, Shimada M, Ninomiya H, Urano H. Fusion Plasma Performance and Confinement Studies on JT-60 and JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a227] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Kamada
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Ishida
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Kikuchi
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Ide
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Takizuka
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Shirai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Koide
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fukuda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Hosogane
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Tsuchiya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Hatae
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Takenaga
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Sato
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Nakamura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Asakura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Kubo
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Higashijima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Miura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - R. Yoshino
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Shimizu
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Hirayama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Mori
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Sakamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Kawano
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Ushigusa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Ikeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Kimura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Fujii
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Imai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Nagami
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Takeji
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Nakano
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - N. Oyama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - S. Konoshima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Sugie
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Tobita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Tamai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - A. Sakasai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - K. Itami
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - M. Shimada
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
| | - H. Ninomiya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, Japan
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12
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Tobita K, Kusama Y, Shinohara K, Nishitani T, Kimura H, Kramer GJ, Nemoto M, Kondoh T, Oikawa T, Morioka A, Hamamatsu K, Wang S, Takeji S, Takechi M, Ishikawa M, Tani K, Saigusa M, Ozeki T. Energetic Particle Experiments in JT-60U and Their Implications for a Fusion Reactor. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Tobita
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - Y. Kusama
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Shinohara
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Nishitani
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - H. Kimura
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - G. J. Kramer
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Nemoto
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - A. Morioka
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Hamamatsu
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Wang
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - S. Takeji
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Takechi
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Ishikawa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - K. Tani
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - M. Saigusa
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
| | - T. Ozeki
- Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan
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13
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Ushigusa K, Ide S, Oikawa T, Suzuki T, Kamada Y, Fujita T, Ikeda Y, Naito O, Matsuoka M, Kondoh T, Isayama A, Seki M, Imai T, Sakamoto K, Umeda N, Hamamatsu K, Fujii T, Uehara K, Yamamoto T, Miura Y, Kikuchi M, Kuriyama M, Ninomiy H. Noninductive Current Drive and Steady-State Operation in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a228] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Ushigusa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - S. Ide
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Oikawa
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Suzuki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Kamada
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Fujita
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Ikeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - O. Naito
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Matsuoka
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Kondoh
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - A. Isayama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Seki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Imai
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Sakamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Umeda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Hamamatsu
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Fujii
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Uehara
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Yamamoto
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Miura
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kikuchi
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kuriyama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - H. Ninomiy
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, 801-1 Mukoyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
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14
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Watanabe S, Shimizu K, Ohashi H, Kosaki R, Okamoto N, Shimojima K, Yamamoto T, Chinen Y, Mizuno S, Dowa Y, Shiomi N, Toda Y, Tashiro K, Shichijo K, Minatozaki K, Aso S, Minagawa K, Hiraki Y, Shimokawa O, Matsumoto T, Fukuda M, Moriuchi H, Yoshiura KI, Kondoh T. Detailed analysis of 26 cases of 1q partial duplication/triplication syndrome. Am J Med Genet A 2016; 170A:908-17. [PMID: 26782913 DOI: 10.1002/ajmg.a.37496] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 04/06/2015] [Accepted: 11/16/2015] [Indexed: 11/10/2022]
Abstract
Partial 1q trisomy syndrome is a rare disorder. Because unbalanced chromosomal translocations often occur with 1q trisomy, it is difficult to determine whether patient symptoms are related to 1q trisomy or other chromosomal abnormalities. The present study evaluated genotype-phenotype correlations of 26 cases diagnosed with 1q partial trisomy syndrome. DNA microarray was used to investigate the duplication/triplication region of 16 cases. Although there was no overlapping region common to all 26 cases, the 1q41-qter region was frequently involved. One case diagnosed as a pure interstitial trisomy of chromosome 1q by G-banded karyotype analysis was instead found to be a pure partial tetrasomy by CytoScan HD Array. In four 1q trisomy syndrome cases involving translocation, the translocated partner chromosome could not be detected by DNA microarray analyzes despite G-banded karyotype analysis, because there were a limited number of probes available for the partner region. DNA microarray and G-banded karyotyping techniques were therefore shown to be compensatory diagnostic tools that should be used by clinicians who suspect chromosomal abnormalities. It is important to continue recruiting affected patients and observe and monitor their symptoms to reveal genotype-phenotype correlations and to fully understand their prognosis and identify causal regions of symptoms.
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Affiliation(s)
- Satoshi Watanabe
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kenji Shimizu
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Hirofumi Ohashi
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Rika Kosaki
- Division of Medical Genetics, National Center for Child Health and Development, Tokyo, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Keiko Shimojima
- Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan
| | - Toshiyuki Yamamoto
- Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan
| | - Yasutsugu Chinen
- Department of Pediatrics, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Yuri Dowa
- Department of Pediatrics, Hyogo Prefectural Tsukaguchi Hospital, Hyogo, Japan
| | - Natsuko Shiomi
- Department of Pediatrics, Yodogawa Christian Hospital, Osaka, Japan
| | - Yoshihiro Toda
- Department of Pediatrics, Graduate School of Medical Sciences, Tokushima University, Tokushima, Japan
| | - Katsuya Tashiro
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Koichi Shichijo
- Department of Pediatrics, Tokushima Red Cross Hospital, Tokushima, Japan
| | | | - Seijiro Aso
- Department of Pediatrics, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Kyoko Minagawa
- Department of Pediatrics, Hyogo College of Medicine, Hyogo, Japan
| | - Yoko Hiraki
- Hiroshima Municipal Center for Child Health and Development, Hiroshima, Japan
| | - Osamu Shimokawa
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tadashi Matsumoto
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
| | - Masafumi Fukuda
- Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Koh-ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
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15
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Tamasaki A, Saito Y, Ueda R, Ohno K, Yokoyama K, Satake T, Sakuma H, Takahashi Y, Kondoh T, Maegaki Y. Effects of donepezil and serotonin reuptake inhibitor on acute regression during adolescence in Down syndrome. Brain Dev 2016; 38:113-7. [PMID: 26143664 DOI: 10.1016/j.braindev.2015.06.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 06/11/2015] [Accepted: 06/24/2015] [Indexed: 11/25/2022]
Abstract
A 14-year-old boy with Down syndrome (DS) showed a gradual decline in his daily activities and feeding capacities, and a marked deterioration triggered by a streptococcal infection was observed at the age of 15 years. He became bedridden, accompanied by sleep disturbance, sustained upward gaze, and generalized rigidity. Magnetic resonance imaging showed unremarkable findings, but antiglutamate receptor autoantibodies were positive in his cerebrospinal fluid. Treatment with thiamine infusion and steroid pulse therapy showed little effect, but gross motor dysfunction and appetite loss were ameliorated by the administration of l-DOPA and serotonin reuptake inhibitors. Thereafter, autistic behaviors predominated, including loss of social interaction, oral tendency, water phobia, and aggressiveness. Initiation of donepezil, an acetylcholinesterase inhibitor, resulted in the disappearance of these symptoms and total recovery of the patient to his previous psychosocial levels. We hypothesize that the acute regression in adolescence represents a process closely related to the defects of serotonergic and cholinergic systems that are innate to DS brains and not just a nonspecific comorbidity of depression or limbic encephalitis.
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Affiliation(s)
- Akiko Tamasaki
- Division of Child Neurology, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan.
| | - Yoshiaki Saito
- Division of Child Neurology, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Riyo Ueda
- Division of Child Neurology, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Koyo Ohno
- Division of Child Neurology, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Katsutoshi Yokoyama
- Division of Neuropsychiatry, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Takahiro Satake
- Division of Neuropsychiatry, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Hiroshi Sakuma
- Department of Brain Development and Neural Regeneration, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yukitoshi Takahashi
- National Epilepsy Center, Shizuoka Institute of Epilepsy and Neurological Disorder, Shizuoka, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disabilities, The Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | - Yoshihiro Maegaki
- Division of Child Neurology, Institute of Neurological Science, Faculty of Medicine, Tottori University, Yonago, Japan
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16
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Gohda Y, Oka S, Matsunaga T, Watanabe S, Yoshiura KI, Kondoh T, Matsumoto T. Neonatal case of novel KMT2D mutation in Kabuki syndrome with severe hypoglycemia. Pediatr Int 2015; 57:726-8. [PMID: 25944076 DOI: 10.1111/ped.12574] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 11/08/2014] [Accepted: 11/17/2014] [Indexed: 01/06/2023]
Abstract
A newborn Japanese girl with Kabuki syndrome had neonatal persistent hyperinsulinemic hypoglycemia, which seemed to be a rare complication of Kabuki syndrome. On sequence analysis she was found to have a novel heterozygous KMT2D mutation. Diazoxide therapy was effective for the hypoglycemia. Hypoglycemia should be considered when Kabuki syndrome patients have convulsion or other non-specific symptoms. Diazoxide may help to improve hypoglycemia in patients with Kabuki syndrome complicated with hyperinsulinemic hypoglycemia.
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Affiliation(s)
- Yuji Gohda
- Department of Pediatrics, Sasebo Kyosai Hospital, Sasebo, Japan
| | - Shohki Oka
- Department of Pediatrics, Sasebo Kyosai Hospital, Sasebo, Japan
| | | | - Satoshi Watanabe
- Department of Human Genetics, Nagasaki University School of Medicine, Nagasaki, Japan.,Department of Pediatrics, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Koh-ichiro Yoshiura
- Department of Human Genetics, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | - Tadashi Matsumoto
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
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Takahashi K, Ogura N, Tomoki R, Eda T, Okada H, Kato R, Iwai S, Ito K, Kuyama K, Kondoh T. Applicability of human dental follicle cells to bone regeneration without dexamethasone: an in vivo pilot study. Int J Oral Maxillofac Surg 2015; 44:664-9. [DOI: 10.1016/j.ijom.2014.11.006] [Citation(s) in RCA: 8] [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] [Received: 04/04/2014] [Revised: 10/27/2014] [Accepted: 11/07/2014] [Indexed: 11/24/2022]
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18
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Kitamura A, Kondoh T, Noguchi M, Hatada T, Tohbu S, Mori KI, Matsuo M, Kunitsugu I, Kanetake H, Moriuchi H. Assessment of lower urinary tract function in children with Down syndrome. Pediatr Int 2014; 56:902-908. [PMID: 24758352 PMCID: PMC4311436 DOI: 10.1111/ped.12367] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [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] [Received: 02/04/2013] [Revised: 01/23/2014] [Accepted: 04/17/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Despite the fact that functional lower urinary tract symptoms are common among people with Down syndrome (DS), their voiding function has not been studied precisely. Our goal was to assess the lower urinary tract functions in DS. METHODS Fifty-five DS children aged 5-15 years old and 35 age-matched control children were evaluated by ultrasonography and uroflowmetry. RESULTS Eleven (20%) DS children had no uresiesthesia, 21 (38%) were urinated under guidance, nine (16%) urinated fewer than three times a day, two (4%) urinated more than 10 times a day, three (5%) used diapers, and 26 (47%) had urinary incontinence. Seven (13%), 15 (27%), and 10 (18%) DS children had weak, prolonged and intermittent urination, respectively, and seven (13%) had urination with straining. In contrast, none of the control subjects had urinary problems. In the uroflowmetrical analysis, 10 (18%), 20 (37%), 11 (20%) and five (9%) DS children showed "bell-shaped," "plateau," "staccato" and "interrupted" patterns, respectively; the remaining nine (16%) could not be analyzed. In contrast, 21 (60%), one (3%), four (11%), three (9%) and two (6%) control subjects showed bell-shaped, tower-shaped, plateau, staccato and interrupted patterns, respectively; the remaining four (11%) could not be analyzed. Residual urine was demonstrated in four (7%) DS children and one (3%) control child. CONCLUSIONS Lower urinary tract symptoms and abnormal uroflowmetry findings, which can lead to further progressive renal and urinary disorders, are common in DS children. Therefore, lower urinary tract functions should be assessed at the life-long regular medical check-ups for subjects with DS.
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Affiliation(s)
- Atsuko Kitamura
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Misakaenosono Mutsumi Institute for Persons with Severe Intellectual/Motor Disabilities, Isahaya, Japan
| | - Mitsuru Noguchi
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Teppei Hatada
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Shohei Tohbu
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Ken-Ichi Mori
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Manabu Matsuo
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Ichiro Kunitsugu
- Department of Public Health, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroshi Kanetake
- Department of Urology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan.,Department of Molecular Microbiology and Immunology, Nagasaki University Graduate School of Biomedical Science, Nagasaki, Japan
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Eda T, Takahashi K, Iwai S, Tomoki R, Okada H, Ito K, Kuyama K, Suemitu M, Ogura N, Tukahara H, Kondoh T. Effect of Plasma Rich in Growth Factors and Platelet-Rich Plasma on Bone Formation in Rat Calvaria. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.335] [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: 10/24/2022]
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Umetani K, Kondoh T. Phase contrast portal imaging using synchrotron radiation. Rev Sci Instrum 2014; 85:073704. [PMID: 25085143 DOI: 10.1063/1.4885755] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Microbeam radiation therapy is an experimental form of radiation treatment with great potential to improve the treatment of many types of cancer. We applied a synchrotron radiation phase contrast technique to portal imaging to improve targeting accuracy for microbeam radiation therapy in experiments using small animals. An X-ray imaging detector was installed 6.0 m downstream from an object to produce a high-contrast edge enhancement effect in propagation-based phase contrast imaging. Images of a mouse head sample were obtained using therapeutic white synchrotron radiation with a mean beam energy of 130 keV. Compared to conventional portal images, remarkably clear images of bones surrounding the cerebrum were acquired in an air environment for positioning brain lesions with respect to the skull structure without confusion with overlapping surface structures.
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Affiliation(s)
- K Umetani
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - T Kondoh
- Kobe University Graduate School of Medicine, Kusunoki-cho, Chuo-ku, Kobe-shi, Hyogo 650-0017, Japan
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21
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Ackroff K, Kondoh T, Sclafani A. Dried Bonito Dashi: A Preferred Fish Broth Without Postoral Reward Actions in Mice. Chem Senses 2013; 39:159-66. [DOI: 10.1093/chemse/bjt065] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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22
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Mukumoto N, Miyawaki D, Akasaka H, Nakayama M, Miura Y, Umetani K, Nariyama N, Shinohara K, Kondoh T, Sasaki R. Normal Tissue Tolerance of Microplanar Beam X-ray: A Long-term Observation. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1726] [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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23
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Fuke T, Mizuno S, Nagai T, Hasegawa T, Horikawa R, Miyoshi Y, Muroya K, Kondoh T, Numakura C, Sato S, Nakabayashi K, Tayama C, Hata K, Sano S, Matsubara K, Kagami M, Yamazawa K, Ogata T. Molecular and clinical studies in 138 Japanese patients with Silver-Russell syndrome. PLoS One 2013; 8:e60105. [PMID: 23533668 PMCID: PMC3606247 DOI: 10.1371/journal.pone.0060105] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 02/21/2013] [Indexed: 12/22/2022] Open
Abstract
Background Recent studies have revealed relative frequency and characteristic phenotype of two major causative factors for Silver-Russell syndrome (SRS), i.e. epimutation of the H19-differentially methylated region (DMR) and uniparental maternal disomy 7 (upd(7)mat), as well as multilocus methylation abnormalities and positive correlation between methylation index and body and placental sizes in H19-DMR epimutation. Furthermore, rare genomic alterations have been found in a few of patients with idiopathic SRS. Here, we performed molecular and clinical findings in 138 Japanese SRS patients, and examined these matters. Methodology/Principal Findings We identified H19-DMR epimutation in cases 1–43 (group 1), upd(7)mat in cases 44–52 (group 2), and neither H19-DMR epimutation nor upd(7)mat in cases 53–138 (group 3). Multilocus analysis revealed hyper- or hypomethylated DMRs in 2.4% of examined DMRs in group 1; in particular, an extremely hypomethylated ARHI-DMR was identified in case 13. Oligonucleotide array comparative genomic hybridization identified a ∼3.86 Mb deletion at chromosome 17q24 in case 73. Epigenotype-phenotype analysis revealed that group 1 had more reduced birth length and weight, more preserved birth occipitofrontal circumference (OFC), more frequent body asymmetry and brachydactyly, and less frequent speech delay than group 2. The degree of placental hypoplasia was similar between the two groups. In group 1, the methylation index for the H19-DMR was positively correlated with birth length and weight, present height and weight, and placental weight, but with neither birth nor present OFC. Conclusions/Significance The results are grossly consistent with the previously reported data, although the frequency of epimutations is lower in the Japanese SRS patients than in the Western European SRS patients. Furthermore, the results provide useful information regarding placental hypoplasia in SRS, clinical phenotypes of the hypomethylated ARHI-DMR, and underlying causative factors for idiopathic SRS.
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Affiliation(s)
- Tomoko Fuke
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Toshiro Nagai
- Department of Pediatrics, Dokkyo Medical University Koshigaya Hospital, Saitama, Japan
| | - Tomonobu Hasegawa
- Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
| | - Reiko Horikawa
- Division of Endocrinology and Metabolism, National Center for Child Health and Development, Tokyo, Japan
| | - Yoko Miyoshi
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Japan
| | - Koji Muroya
- Department of Endocrinology and Metabolism, Kanagawa Children's Medical Center, Kanagawa, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | - Chikahiko Numakura
- Department of Pediatrics, Yamagata University School of Medicine, Yamagata, Japan
| | - Seiji Sato
- Department of Pediatrics, Saitama Municipal Hospital, Saitama, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Chiharu Tayama
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kenichiro Hata
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shinichiro Sano
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Keiko Matsubara
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Masayo Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kazuki Yamazawa
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tsutomu Ogata
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
- * E-mail:
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Aonuma H, Ogura N, Takahashi K, Fujimoto Y, Iwai S, Hashimoto H, Ito K, Kamino Y, Kondoh T. Characteristics and osteogenic differentiation of stem/progenitor cells in the human dental follicle analyzed by gene expression profiling. Cell Tissue Res 2012; 350:317-31. [PMID: 22890370 DOI: 10.1007/s00441-012-1477-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 06/25/2012] [Indexed: 12/11/2022]
Abstract
The dental follicle is an ectomesenchymal tissue that surrounds developing tooth germ and that contains osteoblastic-lineage-committed stem/progenitor cells. We examined the osteogenic potential of human dental follicle cells (hDFC) by microarray analysis. We first compared the characteristics of hDFC with those of human bone marrow mesenchymal stem cells (hMSC). Like hMSC, hDFC expressed stem cell markers such as STRO-1 and Notch-1 and differentiated not only into the osteoblastic lineage, but also into the adipogenic lineage. We analyzed the gene expression profiles of hDFC and hMSC that were not differentiated toward the osteogenic lineage. The expression of cell markers and growth factor receptors by hDFC and hMSC was similar, whereas the expression pattern of homeobox genes differed between hDFC and hMSC. Next, we investigated gene expression in hDFC during osteogenic differentiation. Gene expression profiles were analyzed in hDFC cultured in osteogenic induction medium (OIM) or in growth medium (GM) for 3 and 10 days. Many genes whose expression was regulated under these conditions were functionally categorized as "transcription" genes. Osteogenic markers were up-regulated in hDFC during osteogenic differentiation, whereas neurogenic markers were down-regulated. The genes whose expression was regulated in hDFC during osteogenic differentiation were further analyzed by ingenuity pathway analysis and real-time polymerase chain reaction. Bone morphogenetic protein and transforming growth factor-β signaling pathways were activated in hDFC cultured in OIM for 3 days. This study indicates that the dental follicle contains stem cells and/or osteoblastic progenitor cells and is a potential cellular resource for bone regeneration therapy.
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Affiliation(s)
- H Aonuma
- Department of Maxillofacial Surgery, Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-Nishi, Matsudo, Chiba, 271-8587, Japan
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Abstract
Double-decker pulse radiolysis (DDPR), which utilizes double-decker electron beams, was investigated to develop a new pulse radiolysis with a high time resolution. The double-decker electron beams were generated by injecting two UV pulses into a photocathode radio-frequency gun. In the pulse radiolysis, one electron beam was used as a pump beam, and the other was converted to a probe pulse. Finally, as its first application, the DDPR was successfully used for observing solvated electrons in water, with a 10%-90% rise time of 8.6 ps.
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Affiliation(s)
- K Kan
- Institute of Scientific and Industrial Research, Osaka University, Osaka, Japan.
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26
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Ishikawa M, Kawano Y, Imazawa R, Sato S, Vayakis G, Bertalot L, Yatsuka E, Hatae T, Kondoh T, Kusama Y. Neutronic analysis of the ITER poloidal polarimeter. Fusion Engineering and Design 2011. [DOI: 10.1016/j.fusengdes.2011.01.046] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Otsubo H, Kondoh T, Shibata M, Torii K, Ueta Y. Induction of Fos expression in the rat forebrain after intragastric administration of monosodium L-glutamate, glucose and NaCl. Neuroscience 2011; 196:97-103. [PMID: 21930190 DOI: 10.1016/j.neuroscience.2011.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 08/29/2011] [Accepted: 09/02/2011] [Indexed: 11/24/2022]
Abstract
l-glutamate, an umami taste substance, is a key molecule coupled to a food intake signaling pathway. Furthermore, recent studies have unveiled new roles for dietary glutamate on gut-brain axis communication via activation of gut glutamate receptors and subsequent vagus nerve. In the present study, we mapped activation sites of the rat forebrain after intragastric load of 60 mM monosodium l-glutamate (MSG) by measurement of Fos protein, a functional marker of neuronal activation. The same concentration of d-glucose (sweet) and NaCl (salty) was used as controls. MSG administration exclusively produced enhanced Fos expression in four hypothalamic regions (the medial preoptic area, lateral hypothalamic area, dorsomedial nucleus, and arcuate nucleus). On the other hand, glucose administration exclusively enhanced Fos induction in the nucleus accumbens. Both MSG and glucose enhanced Fos induction in three brain regions (the habenular nucleus, paraventricular nucleus, and central nucleus of the amygdala). However, MSG induced Fos inductions were more potent than those of glucose in the habenular nucleus and paraventricular nucleus. Importantly, the present study identified for the first time two brain areas (the paraventricular and arcuate hypothalamic nuclei) that are more potently activated by intragastric MSG loads compared with glucose and NaCl. Overall, our results suggest significant activation of a neural network comprising the habenular nucleus, amygdala, and the hypothalamic subnuclei following intragastric load with glutamate.
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Affiliation(s)
- H Otsubo
- Department of Physiology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
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28
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Noguchi M, Kondoh T, Moriuchi H, Satoh Y, Tokuda Y, Uozumi J. UP-03.172 Pharmacotherapy with Donepezil for Voiding Dysfunction in Down Syndrome Patients. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1261] [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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29
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Kinoshita F, Kondoh T, Komori K, Matsui T, Harada N, Yanai A, Fukuda M, Morifuji K, Matsumoto T. Miller syndrome with novel dihydroorotate dehydrogenase gene mutations. Pediatr Int 2011; 53:587-91. [PMID: 21851494 DOI: 10.1111/j.1442-200x.2010.03303.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [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: 11/30/2022]
Affiliation(s)
- Fumiko Kinoshita
- Department of Pediatrics, Nagasaki Municipal Hospital, Nagasaki, Japan.
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30
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Kondoh T, Kanno A, Itoh H, Nakashima M, Honda R, Kojima M, Noguchi M, Nakane H, Nozaki H, Sasaki H, Nagai T, Kosaki R, Kakee N, Okuyama T, Fukuda M, Ikeda M, Shibata Y, Moriuchi H. Donepezil significantly improves abilities in daily lives of female Down syndrome patients with severe cognitive impairment: a 24-week randomized, double-blind, placebo-controlled trial. Int J Psychiatry Med 2011; 41:71-89. [PMID: 21495523 DOI: 10.2190/pm.41.1.g] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Down syndrome (DS) patients share certain neuropathological features with Alzheimer disease patients. A randomized, double-blind, placebo-controlled study was performed to investigate the efficacy and safety of donepezil, an Alzheimer disease drug, for DS patients. METHOD Twenty-one DS patients with severe cognitive impairment were assigned to take donepezil (3 mg daily) or a placebo for 24 weeks, and evaluated for activities in daily lives by concisely modified International Classification of Functioning, Disability and Health (ICF) scaling system. RESULTS ICF scores significantly increased without any adverse effects in the donepezil group in comparison to those in the placebo control. Among the individual functions tested, there was a dramatic improvement in the global mental functions and in specific mental functions. CONCLUSIONS Donepezil may effectively and safely improve overall functioning of DS patients with severe cognitive impairment.
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Affiliation(s)
- Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Hospital, Japan.
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Ishikawa M, Kondoh T, Ookawa K, Fujita K, Yamauchi M, Hayakawa A, Nishitani T, Kusama Y. Development of in-vessel components of the microfission chamber for ITER. Rev Sci Instrum 2010; 81:10D308. [PMID: 21033834 PMCID: PMC2973982 DOI: 10.1063/1.3485080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2010] [Accepted: 07/26/2010] [Indexed: 05/30/2023]
Abstract
Microfission chambers (MFCs) will measure the total neutron source strength in ITER. The MFCs will be installed behind blanket modules in the vacuum vessel (VV). Triaxial mineral insulated (MI) cables will carry signals from the MFCs. The joint connecting triaxial MI cables in the VV must be considered because the MFCs and the MI cables will be installed separately at different times. Vacuum tight triaxial connector of the MI cable has been designed and a prototype has been constructed. Performance tests indicate that the connector can be applied to the ITER environment. A small bending-radius test of the MI cable indicates no observed damage at a curvature radius of 100 mm.
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Affiliation(s)
- M Ishikawa
- Japan Atomic Energy Agency, 801-1, Mukoyama, Naka 311-0193, Japan.
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Fukuoka K, Kondoh T, Yoshito U, Kohmura E, Kinosita S, Kawano S. P10-19 An experience of intraoperative electrophysiological monitoring in the surgery of eloquent cortex — “The role of medical laboratory”. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60672-4] [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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Ogura N, Satoh K, Akutsu M, Tobe M, Kuyama K, Kuboyama N, Sakamaki H, Kujiraoka H, Kondoh T. MCP-1 production in temporomandibular joint inflammation. J Dent Res 2010; 89:1117-22. [PMID: 20647497 DOI: 10.1177/0022034510376041] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [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: 11/15/2022] Open
Abstract
Synovitis, which is characterized by the infiltration of inflammatory cells, often accompanies progression of temporomandibular joint disorder (TMD) symptoms. Because IL-1β is elevated in synovial fluids obtained from TMDs, we hypothesized that IL-1β-responsive genes in synoviocytes may help identify the putative genes associated with synovitis. Using microarray analysis, we found that monocyte chemoattractant protein-1 (MCP-1) mRNA levels were elevated in IL-1β-stimulated synoviocytes. MCP-1 is a member of the chemokine superfamily. The production of MCP-1 was increased in synoviocytes treated with IL-1β. When IL-1β was injected into the cavities of rat TMJs, inflammatory cells and MCP-1-positive cells were detected in the synovial tissues. Furthermore, MCP-1 levels were higher in synovial fluids from individuals with pain compared with those without pain. Inhibitors of MAP-kinases and NF-κB reduced IL-1β-induced MCP-1 production. These results suggest that MCP-1 stimulated by IL-1β is one of the factors associated with the inflammatory progression of TMDs.
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Affiliation(s)
- N Ogura
- Department of Maxillofacial Surgery, Nihon University School of Dentistry at Matsudo, 2-870-1 Sakaecho-Nishi, Matsudo, Chiba 271-8587, Japan
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Oikawa M, Kuniba H, Kondoh T, Kinoshita A, Nagayasu T, Niikawa N, Yoshiura KI. Familial brain arteriovenous malformation maps to 5p13-q14, 15q11-q13 or 18p11: linkage analysis with clipped fingernail DNA on high-density SNP array. Eur J Med Genet 2010; 53:244-9. [PMID: 20601259 DOI: 10.1016/j.ejmg.2010.06.007] [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] [Received: 02/12/2010] [Accepted: 06/11/2010] [Indexed: 10/19/2022]
Abstract
Familial arteriovenous malformations (AVM) in the brain is a very rare disease. It is defined as its occurrence in two or more relatives (up to third-degree relatives) in a family without any associated disorders, such as hereditary hemorrhagic telangiectasia. We encountered a Japanese family with brain AVM in which four affected members in four successive generations were observed. One DNA sample extracted from leukocytes of the proband and ten DNA samples from clipped finger nails of other members were available. A genome-wide linkage analysis was performed on this pedigree using Affymetrix GeneCip 10K 2.0 Xba Array and MERLIN software. We obtained sufficient performance of SNP genotyping in the fingernail samples with the mean SNP call rate of 92.49%, and identified 18 regions with positive LOD scores. Haplotype and linkage analyses with microsatellite markers at these regions confirmed three possible disease-responsible regions, i.e., 5p13.2-q14.1, 15q11.2-q13.1 and 18p11.32-p11.22. Sequence analysis was conducted for ten selected candidate genes at 5p13.2-q14.1, such as MAP3K1, DAB2, OCLN, FGF10, ESM1, ITGA1, ITGA2, EGFLAM, ERBB2IP, and PIK3R1, but no causative genetic alteration was detected. This is the first experience of adoption of fingernail DNA to genome-wide, high-density SNP microarray analysis, showing candidate brain AVM susceptible regions.
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Affiliation(s)
- Masahiro Oikawa
- Departments of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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35
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Norizawa K, Kondoh T, Yang J, Ogata A, Yoshida Y. Pulse radiolysis study of trapped electron in MgSO4.7H2O single crystal. Radiat Phys Chem Oxf Engl 1993 2009. [DOI: 10.1016/j.radphyschem.2009.07.014] [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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Sato K, Ohmori J, Kondoh T, Hatae T, Kajita S, Ishikawa M, Neyatani Y, Ebisawa K, Kusama Y. Engineering and maintenance studies of the ITER diagnostic upper port plug. Fusion Engineering and Design 2009. [DOI: 10.1016/j.fusengdes.2009.01.085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Liu J, Zhang Z, Bando M, Itoh T, Deardorff MA, Clark D, Kaur M, Tandy S, Kondoh T, Rappaport E, Spinner NB, Vega H, Jackson LG, Shirahige K, Krantz ID. Transcriptional dysregulation in NIPBL and cohesin mutant human cells. PLoS Biol 2009; 7:e1000119. [PMID: 19468298 PMCID: PMC2680332 DOI: 10.1371/journal.pbio.1000119] [Citation(s) in RCA: 178] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Accepted: 04/17/2009] [Indexed: 01/13/2023] Open
Abstract
Genome-wide studies using cells from patients with Cornelia de Lange Syndrome reveal a role for cohesin in regulating gene expression in human cells. Cohesin regulates sister chromatid cohesion during the mitotic cell cycle with Nipped-B-Like (NIPBL) facilitating its loading and unloading. In addition to this canonical role, cohesin has also been demonstrated to play a critical role in regulation of gene expression in nondividing cells. Heterozygous mutations in the cohesin regulator NIPBL or cohesin structural components SMC1A and SMC3 result in the multisystem developmental disorder Cornelia de Lange Syndrome (CdLS). Genome-wide assessment of transcription in 16 mutant cell lines from severely affected CdLS probands has identified a unique profile of dysregulated gene expression that was validated in an additional 101 samples and correlates with phenotypic severity. This profile could serve as a diagnostic and classification tool. Cohesin binding analysis demonstrates a preference for intergenic regions suggesting a cis-regulatory function mimicking that of a boundary/insulator interacting protein. However, the binding sites are enriched within the promoter regions of the dysregulated genes and are significantly decreased in CdLS proband, indicating an alternative role of cohesin as a transcription factor. Appropriate segregation of chromosomes to daughter cells depends upon proper cohesion of sister chromatids during mitosis. The multiprotein cohesin complex and its regulators are key factors in this process. Intriguingly, recent work has shown that the cohesin complex also has other cellular roles, including a role in regulating gene expression. Additionally, mutations in cohesin structural and regulatory components have been linked to human multisystem developmental disorders such as Cornelia de Lange Syndrome (CdLS), but the role cohesin is playing in the pathogenesis of this disorder is unknown. To define the role that cohesin plays in regulating gene expression in human cells, we analyzed gene expression and genome-wide cohesin binding patterns in cells from normal subjects and from CdLS probands with mutations in the cohesin regulator NIPBL or in the cohesin structural component SMC1A. We found a strikingly conserved pattern of gene dysregulation in these different cell lines that correlates with disease severity and a significant correlation between gene dysregulation and cohesin binding around misexpressed genes. The observed pattern of binding and misexpression is consistent with cohesin having a putative role as a boundary/insulator interacting protein or transcription factor, the activity of which is disrupted in CdLS probands.
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Affiliation(s)
- Jinglan Liu
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Zhe Zhang
- Center for Biomedical Informatics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Masashige Bando
- Laboratory of Chromosome Structure and Function, Department of Biological Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama City, Kanagawa, Japan
| | - Takehiko Itoh
- Laboratory of Chromosome Structure and Function, Department of Biological Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama City, Kanagawa, Japan
| | - Matthew A. Deardorff
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
- The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Dinah Clark
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Maninder Kaur
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Stephany Tandy
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Tatsuro Kondoh
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | - Eric Rappaport
- NAPCORE, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Nancy B. Spinner
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
- The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Hugo Vega
- Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Laird G. Jackson
- Department of Obstetrics and Gynecology, Drexel University School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Katsuhiko Shirahige
- Laboratory of Chromosome Structure and Function, Department of Biological Science, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama City, Kanagawa, Japan
| | - Ian D. Krantz
- Division of Human Genetics, Abramson Research Institute, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
- The University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Sumi M, Ohno Y, Sasaki R, Kondoh T, Tagawa M, Masuzaki H, Moriuchi H. Probable Noonan syndrome in a boy without PTPN11 mutation, manifesting unusual complications. Pediatr Int 2009; 51:138-40. [PMID: 19371294 DOI: 10.1111/j.1442-200x.2008.02774.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 11/27/2022]
Affiliation(s)
- Muneichiro Sumi
- Department of Pediatrics, Nagasaki University School of Medicine, Nagasaki, Japan.
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Satoh K, Ogura N, Akutsu M, Kuboyama N, Kuyama K, Yamamoto H, Kondoh T. Expression of cyclooxygenase-1 and -2 in IL-1beta-induced synovitis of the temporomandibular joint. J Oral Pathol Med 2008; 38:584-90. [PMID: 19141058 DOI: 10.1111/j.1600-0714.2008.00733.x] [Citation(s) in RCA: 18] [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: 11/28/2022]
Abstract
BACKGROUND In this study, we analyzed the gene expression profile of fibroblast-like synoviocyte (FLS) cultures from the temporomandibular joint (TMJ) to identify candidate genes associated with intracapsular pathologic conditions of TMJ. Cyclooxygenase (COX)-2 was one of the genes in FLS upregulated following stimulation by interleukin (IL)-1beta, a cytokine thought to play a key role in several pathological conditions. This study investigated the expression of COX-1 and COX-2 in cultured human FLS and rat TMJ synovium following stimulation with IL-1beta. METHODS RNA was isolated from human FLS after IL-1beta treatment. COX-1 and -2 expression was examined using a GeneChip and real-time polymerase chain reaction. Prostaglandin E(2) (PGE(2)) levels in conditioned media from FLS were measured using enzyme-linked immunosorbent assay. Synovial tissues from TMJs of IL-1beta-injected rats were examined for COX-1 and COX-2 expression by immunohistochemical staining. RESULTS Following treatment of FLS with IL-1beta, expression of the COX-2 gene increased up to 8 h and peaked at 4 h, whereas COX-1 expression did not change. Stimulation with IL-1beta increased the level of PGE(2) in conditioned media of cultured FLS in a time-dependent manner up to 48 h. Immunohistochemistry showed a strong positive staining for COX-2 in the lining and sub-lining synovial tissues of the TMJ of IL-1beta-injected rats. In contrast, staining for COX-1 was the same in synovial tissues with and without IL-1beta injection. CONCLUSION These data suggest that COX-2 expression stimulated by IL-1beta stimulates the production of PGE(2) in FLS and plays important roles in the progression of inflammation in TMJ.
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Affiliation(s)
- K Satoh
- Department of Maxillofacial Surgery, Nihon University School of Dentistry, Matsudo, Chiba 271-8587, Japan
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Affiliation(s)
- Masanori Egashira
- Department of Pediatrics, Nagasaki University School of Medicine, Nagasaki, Japan.
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41
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Narumi Y, Aoki Y, Niihori T, Sakurai M, Cavé H, Verloes A, Nishio K, Ohashi H, Kurosawa K, Okamoto N, Kawame H, Mizuno S, Kondoh T, Addor MC, Coeslier-Dieux A, Vincent-Delorme C, Tabayashi K, Aoki M, Kobayashi T, Guliyeva A, Kure S, Matsubara Y. Clinical manifestations in patients with SOS1 mutations range from Noonan syndrome to CFC syndrome. J Hum Genet 2008; 53:834-841. [PMID: 18651097 DOI: 10.1007/s10038-008-0320-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Accepted: 06/23/2008] [Indexed: 05/25/2023]
Abstract
Noonan syndrome (NS) and cardio-facio-cutaneous (CFC) syndrome are autosomal dominant disorders characterized by heart defects, facial dysmorphism, ectodermal abnormalities, and mental retardation. There is a significant clinical overlap between NS and CFC syndrome, but ectodermal abnormalities and mental retardation are more frequent in CFC syndrome. Mutations in PTPN11 and KRAS have been identified in patients with NS and those in KRAS, BRAF and MAP2K1/2 have been identified in patients with CFC syndrome, establishing a new role of the RAS/MAPK pathway in human development. Recently, mutations in the son of sevenless gene (SOS1) have also been identified in patients with NS. To clarify the clinical spectrum of patients with SOS1 mutations, we analyzed 24 patients with NS, including 3 patients in a three-generation family, and 30 patients with CFC syndrome without PTPN11, KRAS, HRAS, BRAF, and MAP2K1/2 (MEK1/2) mutations. We identified two SOS1 mutations in four NS patients, including three patients in the above-mentioned three-generation family. In the patients with a CFC phenotype, three mutations, including a novel three amino-acid insertion, were identified in one CFC patient and two patients with both NS and CFC phenotypes. These three patients exhibited ectodermal abnormalities, such as curly hair, sparse eyebrows, and dry skin, and two of them showed mental retardation. Our results suggest that patients with SOS1 mutations range from NS to CFC syndrome.
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Affiliation(s)
- Yoko Narumi
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Yoko Aoki
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan.
| | - Tetsuya Niihori
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Masahiro Sakurai
- Department of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hélène Cavé
- Department of Genetics, Hôpital Robert Debré (APHP), Paris, France
| | - Alain Verloes
- Department of Genetics, Hôpital Robert Debré (APHP), Paris, France
| | - Kimio Nishio
- Department of Clinical Genetics, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.,Nishio Family Clinic, Hamamatsu, Japan
| | - Hirofumi Ohashi
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Kenji Kurosawa
- Division of Medical Genetics, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Nobuhiko Okamoto
- Department of Planning and Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Hiroshi Kawame
- Division of Medical Genetics, Nagano Children's Hospital, Nagano, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Tatsuro Kondoh
- Division of Developmental Disability, Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Isahaya, Japan
| | | | | | | | - Koichi Tabayashi
- Department of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masashi Aoki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomoko Kobayashi
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Afag Guliyeva
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Shigeo Kure
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Yoichi Matsubara
- Department of Medical Genetics, Tohoku University School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
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Kuniba H, Pooh RK, Sasaki K, Shimokawa O, Harada N, Kondoh T, Egashira M, Moriuchi H, Yoshiura KI, Niikawa N. Prenatal diagnosis of Costello syndrome using 3D ultrasonography amniocentesis confirmation of the rare HRAS mutation G12D. Am J Med Genet A 2008; 149A:785-7. [DOI: 10.1002/ajmg.a.32335] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [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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43
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Kuniba H, Tsuda M, Nakashima M, Miura S, Miyake N, Kondoh T, Matsumoto T, Moriuchi H, Ohashi H, Kurosawa K, Tonoki H, Nagai T, Okamoto N, Kato M, Fukushima Y, Naritomi K, Matsumoto N, Kinoshita A, Yoshiura KI, Niikawa N. Lack of C20orf133 and FLRT3 mutations in 43 patients with Kabuki syndrome in Japan. J Med Genet 2008; 45:479-80. [DOI: 10.1136/jmg.2008.058503] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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44
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Kurotaki N, Shen JJ, Touyama M, Kondoh T, Visser R, Ozaki T, Nishimoto J, Shiihara T, Uetake K, Makita Y, Harada N, Raskin S, Brown CW, Höglund P, Okamoto N, Lupski JR. Phenotypic consequences of genetic variation at hemizygous alleles: Sotos syndrome is a contiguous gene syndrome incorporating coagulation factor twelve (FXII) deficiency. Genet Med 2008; 7:479-83. [PMID: 16170239 DOI: 10.1097/01.gim.0000177419.43309.37] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
PURPOSE We tested the hypothesis that Sotos syndrome (SoS) due to the common deletion is a contiguous gene syndrome incorporating plasma coagulation factor twelve (FXII) deficiency. The relationship between FXII activity and the genotype at a functional polymorphism of the FXII gene was investigated. METHODS A total of 21 patients including those with the common deletion, smaller deletions, and point mutations, and four control individuals were analyzed. We examined FXII activity in patients and controls, and analyzed their FXII 46C/T genotype using direct DNA sequencing. RESULTS Among 10 common deletion patients, seven patients had lower FXII activity with the 46T allele of the FXII gene, whereas three patients had normal FXII activity with the 46C allele. Two patients with smaller deletions, whose FXII gene is not deleted had low FXII activity, but one patient with a smaller deletion had normal FXII. Four point mutation patients and controls all had FXII activities within the normal range. CONCLUSION FXII activity in SoS patients with the common deletion is predominantly determined by the functional polymorphism of the remaining hemizygous FXII allele. Thus, Sotos syndrome is a contiguous gene syndrome incorporating coagulation factor twelve (FXII) deficiency.
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Affiliation(s)
- Naohiro Kurotaki
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas 77030, USA
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45
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Dateki S, Kondoh T, Nishimura G, Motomura K, Yoshiura KI, Kinoshita A, Kuniba H, Koga Y, Moriuchi H. A Japanese patient with a mild Lenz-Majewski syndrome. J Hum Genet 2007; 52:686-689. [PMID: 17593321 DOI: 10.1007/s10038-007-0165-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2007] [Accepted: 05/17/2007] [Indexed: 10/23/2022]
Abstract
We report on a sclerosing bone dysplasia, associated with cutis laxa, enamel dysplasia, and mental retardation. The patient was a 17-year-old Japanese boy of normal height and muscular build. Cutis laxa with prominent veins in the scalp and abdominal wall and delayed eruption of permanent teeth attracted the attention of clinicians in infancy and adolescence, respectively. The clinical manifestations included a progeroid facial appearance with prognathism, wrinkled skin, and interdigital webbing. The intelligence quotient was estimated at 60. Enamel dysplasia was histologically confirmed. Skeletal changes included calvarial hyperostosis, sclerosis of the skull base, an enlarged, sclerotic mandible, broad clavicles and ribs, and diaphyseal undermodeling of the tubular bones. Metaepiphyseal sclerosis or longitudinal striation was found in the long bones. Metaphyseal equivalents of the axial skeleton showed dense osteosclerosis. These clinical and radiological manifestations overlapped with those of Lenz-Majewski syndrome. Unlike the classical phenotype of the disorder, however, he did not show brachymesophalangy with proximal symphalangism or growth failure. The present case may be considered to fall in the mildest end in the phenotypic continuum of Lenz-Majewski syndrome, suggesting that the clinical spectrum of the disorder may be broader than currently thought.
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Affiliation(s)
- Sumito Dateki
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan.
| | - Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan
| | - Gen Nishimura
- Department of Radiology, Tokyo Metropolitan Kiyose Children's Hospital, Tokyo, Japan
| | - Katsuaki Motomura
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan
| | - Koh-Ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Akira Kinoshita
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hideo Kuniba
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yoshiyuki Koga
- Division of Oral Pathology and Bone Metabolism, Department of Developmental and Reconstructive Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan
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46
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Hirata M, Cho T, Kohagura J, Numakura T, Shimizu K, Ito M, Kiminami S, Morimoto N, Hirai K, Yamagishi T, Ikuno T, Namiki S, Miyata Y, Minami R, Ogura K, Kondoh T, Kariya T, Imai T, Miyoshi S. Study of the Effects of Plasma-Confining Potentials Using End-Loss Analysing Systems. Fusion Science and Technology 2007. [DOI: 10.13182/fst07-a1345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Hirata
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Cho
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - J. Kohagura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Numakura
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - K. Shimizu
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - M. Ito
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - S. Kiminami
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - N. Morimoto
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - K. Hirai
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Yamagishi
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - T. Ikuno
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - S. Namiki
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - Y. Miyata
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - R. Minami
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - K. Ogura
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - T. Kondoh
- Japan Atomic Energy Agency, Naka, Ibaraki, Japan
| | - T. Kariya
- Toshiba Electron Tubes and Devices, Tochigi, Japan
| | - T. Imai
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
| | - S. Miyoshi
- Plasma Research Centre, University of Tsukuba, Ibaraki 305-8577, Japan
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47
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Kondoh T, Okamoto N, Norimatsu N, Uetani M, Nishimura G, Moriuchi H. A Japanese case of oto-palato-digital syndrome type II: an apparent lack of phenotype-genotype correlation. J Hum Genet 2007; 52:370-373. [PMID: 17264970 DOI: 10.1007/s10038-007-0108-7] [Citation(s) in RCA: 12] [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] [Received: 09/15/2006] [Accepted: 12/24/2006] [Indexed: 10/23/2022]
Abstract
We report the case of a 12 year-old boy with oto-palato-digital syndrome type II (OPD II). He had various anomalies at birth, including bilateral cataracts, bilateral glaucoma, bilateral severe hearing impairment, congenital heart defect, umbilical herniation, bowed extremities and constrictions of various joints. These clinical features and whole body X-ray findings were compatible with OPD II. However, his ocular disorders such as congenital cataract and glaucoma, and congenital heart defect have never been associated with OPD II as far as we know. His chromosomal analysis revealed normal karyotype, 46,XY. Analysis of the filamin A gene using a standard PCR-direct sequencing method determined a C586T (Arg196Trp) missense mutation in exon 3. Interestingly, the same C586T mutation was reported previously in a patient with OPD I (mild form). Thus, phenotype-genotype correlation of OPD is lacking in those patients. Further clinical and genetic studies are needed to clarify the relationship between phenotypes and genotypes, or to identify other factor(s) that influence the clinical features of this syndrome.
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Affiliation(s)
- T Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan.
| | - N Okamoto
- Department of Planning and Research, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - N Norimatsu
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan
| | - M Uetani
- Department of Radiology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - G Nishimura
- Department of Radiology, Tokyo Metropolitan Kiyose Children's Hospital, Tokyo, Japan
| | - H Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan
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48
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Kuniba H, Egashira M, Motomura H, Motomura K, Kondoh T. [Rud syndrome]. Nihon Rinsho 2006; Suppl 3:485-7. [PMID: 17022593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Affiliation(s)
- Hideo Kuniba
- Department of Pediatrics, Nagasaki University School of Medicine
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49
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Kuniba H, Egashira M, Motomura H, Motomura K, Kondoh T. [Hall syndrome (Pallister-Hall syndrome)]. Nihon Rinsho 2006; Suppl 3:591-3. [PMID: 17022615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Affiliation(s)
- Hideo Kuniba
- Department of Pediatrics, Nagasaki University School of Medicine
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50
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Sakai H, Visser R, Ikegawa S, Ito E, Numabe H, Watanabe Y, Mikami H, Kondoh T, Kitoh H, Sugiyama R, Okamoto N, Ogata T, Fodde R, Mizuno S, Takamura K, Egashira M, Sasaki N, Watanabe S, Nishimaki S, Takada F, Nagai T, Okada Y, Aoka Y, Yasuda K, Iwasa M, Kogaki S, Harada N, Mizuguchi T, Matsumoto N. Comprehensive genetic analysis of relevant four genes in 49 patients with Marfan syndrome or Marfan-related phenotypes. Am J Med Genet A 2006; 140:1719-25. [PMID: 16835936 DOI: 10.1002/ajmg.a.31353] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [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: 11/09/2022]
Abstract
In order to evaluate the contribution of FBN1, FBN2, TGFBR1, and TGFBR2 mutations to the Marfan syndrome (MFS) phenotype, the four genes were analyzed by direct sequencing in 49 patients with MFS or suspected MFS as a cohort study. A total of 27 FBN1 mutations (22 novel) in 27 patients (55%, 27/49), 1 novel TGFBR1 mutation in 1 (2%, 1/49), and 2 recurrent TGFBR2 mutations in 2 (4%, 2/49) were identified. No FBN2 mutation was found. Three patients with either TGFBR1 or TGFBR2 abnormality did not fulfill the Ghent criteria, but expressed some overlapping features of MFS and Loeys-Dietz syndrome (LDS). In the remaining 19 patients, either of the genes did not show any abnormalities. This study indicated that FBN1 mutations were predominant in MFS but TGFBRs defects may account for approximately 5-10% of patients with the syndrome.
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Affiliation(s)
- Haruya Sakai
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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