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Xu B, Shimauchi-Ohtaki H, Yoshimoto Y, Sadakata T, Ishizaki Y. Transplanted human iPSC-derived vascular endothelial cells promote functional recovery by recruitment of regulatory T cells to ischemic white matter in the brain. J Neuroinflammation 2023; 20:11. [PMID: 36650518 PMCID: PMC9847196 DOI: 10.1186/s12974-023-02694-0] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/06/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Ischemic stroke in white matter of the brain induces not only demyelination, but also neuroinflammation. Peripheral T lymphocytes, especially regulatory T cells (Tregs), are known to infiltrate into ischemic brain and play a crucial role in modulation of inflammatory response there. We previously reported that transplantation of vascular endothelial cells generated from human induced pluripotent stem cells (iVECs) ameliorated white matter infarct. The aim of this study is to investigate contribution of the immune system, especially Tregs, to the mechanism whereby iVEC transplantation ameliorates white matter infarct. METHODS iVECs and human Tregs were transplanted into the site of white matter lesion seven days after induction of ischemia. The egress of T lymphocytes from lymph nodes was sequestered by treating the animals with fingolimod (FTY720). The infarct size was evaluated by magnetic resonance imaging. Immunohistochemistry was performed to detect the activated microglia and macrophages, T cells, Tregs, and oligodendrocyte lineage cells. Remyelination was examined by Luxol fast blue staining. RESULTS iVEC transplantation reduced ED-1+ inflammatory cells and CD4+ T cells, while increased Tregs in the white matter infarct. Treatment of the animals with FTY720 suppressed neuroinflammation and reduced the number of both CD4+ T cells and Tregs in the lesion, suggesting the importance of infiltration of these peripheral immune cells into the lesion in aggravation of neuroinflammation. Suppression of neuroinflammation by FTY720 per se, however, did not promote remyelination in the infarct. FTY720 treatment negated the increase in the number of Tregs by iVEC transplantation in the infarct, and attenuated remyelination promoted by transplanted iVECs, while it did not affect the number of oligodendrocyte lineage cells increased by iVEC transplantation. Transplantation of Tregs together with iVECs into FTY720-treated ischemic white matter did not affect the number of oligodendrocyte lineage cells, while it remarkably promoted myelin regeneration. CONCLUSIONS iVEC transplantation suppresses neuroinflammation, but suppression of neuroinflammation per se does not promote remyelination. Recruitment of Tregs by transplanted iVECs contributes significantly to promotion of remyelination in the injured white matter.
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Affiliation(s)
- Bin Xu
- grid.256642.10000 0000 9269 4097Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511 Japan ,grid.452661.20000 0004 1803 6319Department of Pathology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang China
| | - Hiroya Shimauchi-Ohtaki
- grid.256642.10000 0000 9269 4097Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Gunma Japan
| | - Yuhei Yoshimoto
- grid.256642.10000 0000 9269 4097Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Gunma Japan
| | - Tetsushi Sadakata
- grid.256642.10000 0000 9269 4097Education and Research Support Center, Gunma University Graduate School of Medicine, Maebashi, Gunma Japan
| | - Yasuki Ishizaki
- grid.256642.10000 0000 9269 4097Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511 Japan
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Jiang W, Kakizaki T, Fujihara K, Miyata S, Zhang Y, Suto T, Kato D, Saito S, Shibasaki K, Ishizaki Y, Isoda K, Yokoo H, Obinata H, Hirano T, Miyasaka Y, Mashimo T, Yanagawa Y. Impact of GAD65 and/or GAD67 deficiency on perinatal development in rats. FASEB J 2022; 36:e22123. [PMID: 34972242 DOI: 10.1096/fj.202101389r] [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: 09/03/2021] [Revised: 11/26/2021] [Accepted: 12/13/2021] [Indexed: 11/11/2022]
Abstract
GABA is a major neurotransmitter in the mammalian central nervous system. Glutamate decarboxylase (GAD) synthesizes GABA from glutamate, and two isoforms of GAD, GAD65, and GAD67, are separately encoded by the Gad2 and Gad1 genes, respectively. The phenotypes differ in severity between GAD single isoform-deficient mice and rats. For example, GAD67 deficiency causes cleft palate and/or omphalocele in mice but not in rats. In this study, to further investigate the functional roles of GAD65 and/or GAD67 and to determine the contribution of these isoforms to GABA synthesis during development, we generated various kinds of GAD isoform(s)-deficient rats and characterized their phenotypes. The age of death was different among Gad mutant rat genotypes. In particular, all Gad1-/- ; Gad2-/- rats died at postnatal day 0 and showed little alveolar space in their lungs, suggesting that the cause of their death was respiratory failure. All Gad1-/- ; Gad2-/- rats and 18% of Gad1-/- ; Gad2+/- rats showed cleft palate. In contrast, none of the Gad mutant rats including Gad1-/- ; Gad2-/- rats, showed omphalocele. These results suggest that both rat GAD65 and GAD67 are involved in palate formation, while neither isoform is critical for abdominal wall formation. The GABA content in Gad1-/- ; Gad2-/- rat forebrains and retinas at embryonic day 20 was extremely low, indicating that almost all GABA was synthesized from glutamate by GADs in the perinatal period. The present study shows that Gad mutant rats are a good model for further defining the role of GABA during development.
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Affiliation(s)
- Weiru Jiang
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Toshikazu Kakizaki
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Kazuyuki Fujihara
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Shigeo Miyata
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yue Zhang
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan.,Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, China
| | - Takashi Suto
- Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Daiki Kato
- Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Shigeru Saito
- Department of Anesthesiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Isoda
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hideaki Yokoo
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hideru Obinata
- Laboratory for Analytical Instruments, Education and Research Support Center, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Touko Hirano
- Laboratory for Analytical Instruments, Education and Research Support Center, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoshiki Miyasaka
- Institute of Experimental Animal Sciences, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Tomoji Mashimo
- Laboratory Animal Research Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yuchio Yanagawa
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
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3
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Oda M, Fujiwara Y, Ishizaki Y, Shibasaki K. Oxidation sensitizes TRPV2 to chemical and heat stimuli, but not mechanical stimulation. Biochem Biophys Rep 2021; 28:101173. [PMID: 34841092 PMCID: PMC8605382 DOI: 10.1016/j.bbrep.2021.101173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/13/2021] [Revised: 11/11/2021] [Accepted: 11/13/2021] [Indexed: 11/19/2022] Open
Abstract
The transient receptor potential vanilloid 2 (TRPV2) ion channel is activated by a chemical ligand (2-aminoethoxydiphenyl borate; 2-APB), noxious heat and mechanical stimulation. In a heterologous mammalian cell expression system, the oxidant chloramine T (ChT) sensitizes TRPV2 activation in response to 2-APB and heat by oxidation of methionine residues at positions 528 and 607 in rat TRPV2. Here, we used a Xenopus oocyte expression system to determine whether ChT-mediated oxidation can also sensitize TRPV2 to mechanical stimulation. In this system, we confirmed that ChT sensitized TRPV2 activation in response to 2-APB and heat, but we detected no sensitization to mechanical stimulation. This result suggests that the activation mechanism of TRPV2 by a chemical ligand and heat differs from that for mechanical stimulation. Further, we demonstrated that two-electrode voltage clamp recording in the Xenopus oocyte expression system is an excellent format for high throughput analysis of oxidization of redox-sensitive TRP channels.
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Affiliation(s)
- Mai Oda
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Yuichiro Fujiwara
- Molecular Physiology & Biophysics, Faculty of Medicine, Kagawa University, Kagawa, 761-0793, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
- Laboratory of Neurochemistry, Graduate School of Human Health Science, University of Nagasaki, 1-1-1 Manabino, Nagasaki, 851-2195, Japan
- Corresponding author. Laboratory of Neurochemistry, Graduate School of Human Health Science, University of Nagasaki, 1-1-1 Manabino, Nagayo, Nagasaki, 851-2195, Japan.
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Sugimoto H, Horii T, Hirota JN, Sano Y, Shinoda Y, Konno A, Hirai H, Ishizaki Y, Hirase H, Hatada I, Furuichi T, Sadakata T. The Ser19Stop single nucleotide polymorphism (SNP) of human PHYHIPL affects the cerebellum in mice. Mol Brain 2021; 14:52. [PMID: 33712038 PMCID: PMC7953787 DOI: 10.1186/s13041-021-00766-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/03/2021] [Indexed: 11/12/2022] Open
Abstract
The HapMap Project is a major international research effort to construct a resource to facilitate the discovery of relationships between human genetic variations and health and disease. The Ser19Stop single nucleotide polymorphism (SNP) of human phytanoyl-CoA hydroxylase-interacting protein-like (PHYHIPL) gene was detected in HapMap project and registered in the dbSNP. PHYHIPL gene expression is altered in global ischemia and glioblastoma multiforme. However, the function of PHYHIPL is unknown. We generated PHYHIPL Ser19Stop knock-in mice and found that PHYHIPL impacts the morphology of cerebellar Purkinje cells (PCs), the innervation of climbing fibers to PCs, the inhibitory inputs to PCs from molecular layer interneurons, and motor learning ability. Thus, the Ser19Stop SNP of the PHYHIPL gene may be associated with cerebellum-related diseases.
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Affiliation(s)
- Hisako Sugimoto
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Takuro Horii
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, 371-8512, Japan
| | - Jun-Na Hirota
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yoshitake Sano
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Yo Shinoda
- Department of Environmental Health, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo, 192-0392, Japan
| | - Ayumu Konno
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology and Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, 371-8511, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hajime Hirase
- Center for Translational Neuromedicine, Faculty of Medical and Health Sciences, University of Copenhagen, Blegdamsvej 3B, 2200, Copenhagen N, Denmark
| | - Izuho Hatada
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-machi, Maebashi, 371-8512, Japan
| | - Teiichi Furuichi
- Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Tetsushi Sadakata
- Education and Research Support Center, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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Matsumoto H, Mukai R, Hoshino J, Oda M, Matsuzaki T, Ishizaki Y, Shibasaki K, Akiyama H. Choroidal congestion mouse model: Could it serve as a pachychoroid model? PLoS One 2021; 16:e0246115. [PMID: 33507997 PMCID: PMC7843010 DOI: 10.1371/journal.pone.0246115] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 10/01/2020] [Accepted: 01/13/2021] [Indexed: 01/18/2023] Open
Abstract
Pachychoroid spectrum diseases have been described as a new clinical entity within the spectrum of macular disorders. “Pachychoroid” is defined as choroidal thickening associated with dilated outer choroidal vessels often showing retinal pigment epithelium (RPE) degeneration. Although various clinical studies on the pachychoroid spectrum diseases have been conducted, the pathophysiology of pachychoroid has yet to be fully elucidated. In this study, we attempted to establish a mouse model of pachychoroid. We sutured vortex veins in eyes of wild type mice to imitate the vortex vein congestion in pachychoroid spectrum diseases. Fundus photography and ultra-widefield indocyanine green angiography showed dilated vortex veins from the posterior pole to the ampulla in eyes after induction of choroidal congestion. Optical coherence tomography and tissue sections presented choroidal thickening with dilatation of choroidal vessels. The RPE-choroid/retina thickness ratios on the tissue sections in the treated day 1 and day 7 groups were significantly greater than that in the control group (0.19±0.03 and 0.16±0.01 vs. 0.12±0.02, P<0.05 each). Moreover, immunohistochemistry using RPE flatmount revealed focal RPE degeneration in the treated eyes. Furthermore, inflammatory response-related genes were upregulated in eyes with choroidal congestion induction, and macrophages migrated into the thickened choroid. These results indicated that vortex vein congestion triggered some pachychoroid features. Thus, we have established a choroidal congestion mouse model by suturing vortex veins, which would potentially be useful for investigating the pathophysiology of pachychoroid spectrum diseases.
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Affiliation(s)
- Hidetaka Matsumoto
- Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Japan
- * E-mail:
| | - Ryo Mukai
- Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Junki Hoshino
- Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mai Oda
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Toshiyuki Matsuzaki
- Department of Anatomy and Cell Biology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Shibasaki
- Laboratory of Neurochemistry, Graduate School of Human Health Science, University of Nagasaki, Nagasaki, Japan
| | - Hideo Akiyama
- Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Japan
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Michishita M, Ishizaki Y, Konnai M, Machida Y, Nakahira R, Hatakeyama H, Yoshimura H, Yamamoto M, Soeta S, Ochiai K, Misawa K, Yugeta N, Azakami D. Primary Lymphangiosarcoma of the Urinary Bladder in a Dog. J Comp Pathol 2020; 179:31-35. [PMID: 32958144 DOI: 10.1016/j.jcpa.2020.06.014] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/21/2020] [Accepted: 06/24/2020] [Indexed: 11/18/2022]
Abstract
Abdominal ultrasonographical and computed tomography examinations of a 12-year-old neutered female toy poodle revealed a protruding mass, approximately 2 cm in diameter, at the apex of the bladder. The mass was firm and haemorrhagic with a homogeneously brownish-yellow cut surface. Microscopically, it was unencapsulated and located in the muscle layer with invasion of the extra-muscular layer. It was composed of spindloid to oval neoplastic cells that formed irregular clefts and diffuse sheets that dissected bundles of collagen. Immunohistochemically, the neoplastic cells were positive for vimentin and lymphatic vessel endothelial hyaluronan receptor 1 antigens, but negative for cytokeratin AE1/AE3, factor VIII-related antigen, CD31, CD34, Prox-1, S100, desmin, α-smooth muscle actin and MyoD1. Negative immunolabelling for laminin antigen supported the absence of evidence of a basal lamina on ultrastructural examination. Based on these findings, this tumour was identified as a lymphangiosarcoma. To the best of our knowledge, this case is the first report of lymphangiosarcoma arising from the bladder in a dog.
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Affiliation(s)
- M Michishita
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan.
| | - Y Ishizaki
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Konnai
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Y Machida
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - R Nakahira
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - H Hatakeyama
- Laboratory of Comparative Cellular Biology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - H Yoshimura
- Department of Applied Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - M Yamamoto
- Department of Applied Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - S Soeta
- Department of Veterinary Anatomy, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Ochiai
- Department of Basic Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University
| | | | | | - D Azakami
- Laboratory of Veterinary Clinical Oncology, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Yamashita K, Ogihara T, Hayashi M, Nakagawa T, Ishizaki Y, Kume M, Yano I, Niigata R, Hiraoka J, Yasui H, Nakamura T. Association between dexamethasone treatment and alterations in serum concentrations of trace metals. Pharmazie 2020; 75:218-222. [PMID: 32393433 DOI: 10.1691/ph.2020.0341] [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] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Previously, a significant elevation in the serum levels of iron (Fe) was observed within a few days after the initiation of cisplatin (CDDP)-based chemotherapy. To clarify the underlying mechanisms, the serum concentration of hepcidin, a negative regulator of Fe release, was determined in the clinical samples obtained from six patients with cancer. The result showed that the serum concentration of hepcidin in patients receiving CDDP-based chemotherapy was significantly increased after 4-6 days of treatment, in comparison to the baseline level, suggesting that aforementioned excessive systemic Fe was not explained by the change of serum hepcidin level. All these patients received antiemetic premedication. We next evaluated of the effects of Pt-containing drugs and prophylactic antiemetic dexamethasone medication on the serum concentration of trace metals in mice, and on the hepatic and renal concentration of trace metals. The serum concentrations of Fe, Cu, and Zn in the CDDP-treated and oxaliplatin-treated mice were not significantly altered in comparison to those of the vehicle-treated control group. The serum concentrations of Fe, Cu, and Zn were increased after 24 h of dexamethasone treatment, compared to those of the control group (P < 0.05). The hepatic concentration of Mn was significantly reduced, whereas those of Fe and Cu inclined to diminish. The present findings suggest that dexamethasone can partly contribute to the changes in the serum concentrations of trace metals during anticancer chemotherapy.
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Affiliation(s)
- K Yamashita
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - T Ogihara
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - M Hayashi
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - T Nakagawa
- Department of Clinical Pharmacology and Therapeutics, Kyoto University Hospital, Kyoto, Japan
| | - Y Ishizaki
- Education and Research Center for Clinical Pharmacy, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - M Kume
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - I Yano
- Department of Pharmacy, Kobe University Hospital, Kobe, Japan
| | - R Niigata
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - J Hiraoka
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - H Yasui
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University, Kyoto, Japan
| | - T Nakamura
- Education and Research Center for Clinical Pharmacy, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan;,
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Xu B, Kurachi M, Shimauchi-Ohtaki H, Yoshimoto Y, Ishizaki Y. Transplantation of iPS-derived vascular endothelial cells improves white matter ischemic damage. J Neurochem 2020; 153:759-771. [PMID: 31883380 PMCID: PMC7317957 DOI: 10.1111/jnc.14949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 08/21/2019] [Revised: 12/12/2019] [Accepted: 12/19/2019] [Indexed: 02/06/2023]
Abstract
White matter infarct induces demyelination and brain dysfunction. We previously reported that transplantation of brain microvascular endothelial cells improved the behavioral outcome and promoted remyelination by increasing the number of oligodendrocyte precursor cells in the rat model of white matter infarct. In this study, we investigated the effects of transplantation of vascular endothelial cells generated from human induced pluripotent stem cells (iPSCs) on the rat model of white matter infarct. Seven days after induction of ischemic demyelinating lesion by injection of endothelin‐1 into the internal capsule of a rat brain, iPSC‐derived vascular endothelial cells (iVECs) were transplanted into the site of demyelination. The majority of iVECs transplanted into the internal capsule survived for 14 days after transplantation when traced by immunohistochemistry for a human cytoplasmic protein. iVEC transplantation significantly recovered hind limb rotation angle as compared to human iPSC or rat meningeal cell transplantation when evaluated using footprint test. Fourteen days after iVEC transplantation, the infarct area remarkably decreased as compared to that just before the transplantation when evaluated using magnetic resonance imaging or luxol fast blue staining, and remyelination was promoted dramatically in the infarct when assessed using luxol fast blue staining. Transplantation of iVECs increased the number of oligodendrocyte lineage cells and suppressed the inflammatory response and reactive astrocytogenesis. These results suggest that iVEC transplantation may prove useful in treatment for white matter infarct. ![]()
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Affiliation(s)
- Bin Xu
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | | | - Yuhei Yoshimoto
- Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
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SHINYA K, Minakawa A, Ishizaki Y, Ochiai S, Asou K, Nishizono R, Kikuchi M, Inagaki H, Sato Y, Fujimoto S. MON-011 A CASE SERIES OF MONOCLONAL GAMMOPATHY OF RENAL SIGNIFICANCE (MGRS) IN THE CONTEXT OF MONOCLONAL IMMUNOGLOBULIN DETECTION. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.767] [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: 11/25/2022] Open
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Shimauchi-Ohtaki H, Kurachi M, Naruse M, Shibasaki K, Sugio S, Matsumoto K, Ema M, Yoshimoto Y, Ishizaki Y. The dynamics of revascularization after white matter infarction monitored in Flt1-tdsRed and Flk1-GFP mice. Neurosci Lett 2018; 692:70-76. [PMID: 30389418 DOI: 10.1016/j.neulet.2018.10.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 07/16/2018] [Revised: 10/11/2018] [Accepted: 10/30/2018] [Indexed: 12/18/2022]
Abstract
Subcortical white matter infarction causes ischemic demyelination and loss of brain functions, as the result of disturbances of the blood flow. Although angiogenesis is one of the recovery processes after cerebral infarction, the dynamics of revascularization after white matter infarction still remains unclear. We induced white matter infarction in the internal capsule of Flk1-GFP::Flt1-tdsRed double transgenic mice by injection of endothelin-1 (ET-1), a vasoconstrictor peptide, together with N(G)-nitro-L-arginine methyl ester (L-NAME), a nitric oxide synthase inhibitor, and followed the changes in Flk1 and Flt1 expression in the vascular system in the infarct area. Reduction of Flt1-tdsRed-positive blood vessels 1 day after the injection and increase of Flk1-GFP-strongly-positive blood vessels 3 days after the injection were apparent. PDGFRβ-strongly-positive (PDGFRβ+) cells appeared in the infarct area 3 days after the injection and increased their number thereafter. Three days after the injection, most of these cells were in close contact with Flk1-GFP-positive endothelial cells, indicating these cells are bona fide pericytes. Seven days after the injection, the number of PDGFRβ+ cells increased dramatically, and the vast majority of these cells were not in close contact with Flk1-GFP-positive endothelial cells. Taken together, our results suggest revascularization begins early after the ischemic insult, and the emerging pericytes first ensheath blood vessels and then produce fibroblast-like cells not directly associated with blood vessels.
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Affiliation(s)
- Hiroya Shimauchi-Ohtaki
- Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan; Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masae Naruse
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Shouta Sugio
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Ken Matsumoto
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Masatsugu Ema
- Department of Stem Cells and Human Disease Models, Research Center for Animal Life Science, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Yuhei Yoshimoto
- Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
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Yoshida Y, Sejimo Y, Kurachi M, Ishizaki Y, Nakano T, Takahashi A. X-ray irradiation induces disruption of the blood–brain barrier with localized changes in claudin-5 and activation of microglia in the mouse brain. Neurochem Int 2018; 119:199-206. [DOI: 10.1016/j.neuint.2018.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 02/24/2018] [Accepted: 03/08/2018] [Indexed: 10/17/2022]
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Yamamoto H, Kurachi M, Naruse M, Shibasaki K, Ishizaki Y. BMP4 signaling in NPCs upregulates Bcl-xL to promote their survival in the presence of FGF-2. Biochem Biophys Res Commun 2018; 496:588-593. [DOI: 10.1016/j.bbrc.2018.01.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 01/13/2018] [Indexed: 12/17/2022]
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Naruse M, Shibasaki K, Shimauchi-Ohtaki H, Ishizaki Y. Microglial Activation Induces Generation of Oligodendrocyte Progenitor Cells from the Subventricular Zone after Focal Demyelination in the Corpus Callosum. Dev Neurosci 2018; 40:54-63. [PMID: 29393205 DOI: 10.1159/000486332] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 12/14/2017] [Indexed: 11/19/2022] Open
Abstract
Neuroblasts derived from neural stem cells (NSCs) in the subventricular zone (SVZ) migrate along the rostral migratory stream into the olfactory bulb to generate interneurons under normal physiological conditions. When demyelination occurs, NSCs or neural progenitor cells (NPCs) in the SVZ provide newly formed oligodendrocytes to demyelinated lesions. The plasticity of NSC/NPC lineages may tend to oligodendrogenesis under the influence of demyelinated lesions. The mechanisms, however, still remain unknown. This study revealed that focal demyelination in the corpus callosum caused activation of the microglia, not only at the site of demyelination but also in the SVZ, and dramatically increased the generation of oligodendrocyte progenitor cells (OPCs) in the SVZ. Furthermore, the inhibition of microglial activation by minocycline treatment decreased OPC generation in the SVZ, suggesting that microglial activation in the SVZ, induced by the focal demyelination in the corpus callosum, regulates NSC/NPC lineage plasticity in situ. In contrast to the findings regarding demyelination in the corpus callosum, inducing focal demyelination in the internal capsule did not induce either microglial activation or OPC generation in the SVZ. These results suggest that the mechanism of OPC generation in the SVZ after inducing demyelinating lesions could be different across the demyelinated regions.
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Affiliation(s)
- Masae Naruse
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroya Shimauchi-Ohtaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Neurosurgery, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
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14
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Naruse M, Shibasaki K, Ishizaki Y. Temporal Changes in Transcription Factor Expression Associated with the Differentiation State of Cerebellar Neural Stem/Progenitor Cells During Development. Neurochem Res 2017; 43:205-211. [PMID: 28988404 DOI: 10.1007/s11064-017-2405-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 05/29/2017] [Revised: 09/19/2017] [Accepted: 09/21/2017] [Indexed: 01/13/2023]
Abstract
During central nervous development, multi-potent neural stem/progenitor cells located in the ventricular/subventricular zones are temporally regulated to mostly produce neurons during early developmental stages and to produce glia during later developmental stages. After birth, the rodent cerebellum undergoes further dramatic development. It is also known that neural stem/progenitor cells are present in the white matter (WM) of the postnatal cerebellum until around P10, although the fate of these cells has yet to be determined. In the present study, it was revealed that primary neurospheres generated from cerebellar neural stem/progenitor cells at postnatal day 3 (P3) mainly differentiated into astrocytes and oligodendrocytes. In contrast, primary neurospheres generated from cerebellar neural stem/progenitor cells at P8 almost exclusively differentiated into astrocytes, but not oligodendrocytes. These results suggest that the differentiation potential of primary neurospheres changes depending on the timing of neural stem/progenitor cell isolation from the cerebellum. To identify the candidate transcription factors involved in regulating this temporal change, we utilized DNA microarray analysis to compare global gene-expression profiles of primary neurospheres generated from neural stem/progenitor cells isolated from either P3 or P8 cerebellum. The expression of zfp711, zfp618, barx1 and hoxb3 was higher in neurospheres generated from P3 cerebellum than from P8 by real-time quantitative PCR. Several precursor cells were found to express zfp618, barx1 or hoxb3 in the WM of the cerebellum at P3, but these transcription factors were absent from the WM of the P8 cerebellum.
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Affiliation(s)
- Masae Naruse
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
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15
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Osawa S, Kurachi M, Yamamoto H, Yoshimoto Y, Ishizaki Y. Fibronectin on extracellular vesicles from microvascular endothelial cells is involved in the vesicle uptake into oligodendrocyte precursor cells. Biochem Biophys Res Commun 2017; 488:232-238. [PMID: 28499870 DOI: 10.1016/j.bbrc.2017.05.049] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 05/01/2017] [Accepted: 05/08/2017] [Indexed: 11/25/2022]
Abstract
We previously reported transplantation of brain microvascular endothelial cells (MVECs) into cerebral white matter infarction model improved the animal's behavioral outcome by increasing the number of oligodendrocyte precursor cells (OPCs). We also revealed extracellular vesicles (EVs) derived from MVECs promoted survival and proliferation of OPCs in vitro. In this study, we investigated the mechanism how EVs derived from MVECs contribute to OPC survival and proliferation. Protein mass spectrometry and enzyme-linked immunosorbent assay revealed fibronectin was abundant on the surface of EVs from MVECs. As fibronectin has been reported to promote OPC survival and proliferation via integrin signaling pathway, we blocked the binding between fibronectin and integrins using RGD sequence mimics. Blocking the binding, however, did not attenuate the survival and proliferation promoting effect of EVs on OPCs. Flow cytometric and imaging analyses revealed fibronectin on EVs mediates their internalization into OPCs by its binding to heparan sulfate proteoglycan on OPCs. OPC survival and proliferation promoted by EVs were attenuated by blocking the internalization of EVs into OPCs. These lines of evidence suggest that fibronectin on EVs mediates their internalization into OPCs, and the cargo of EVs promotes survival and proliferation of OPCs, independent of integrin signaling pathway.
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Affiliation(s)
- Sho Osawa
- Department of Neurosurgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan; Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Hanako Yamamoto
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Yuhei Yoshimoto
- Department of Neurosurgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan.
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Sugio S, Nagasawa M, Kojima I, Ishizaki Y, Shibasaki K. Transient receptor potential vanilloid 2 activation by focal mechanical stimulation requires interaction with the actin cytoskeleton and enhances growth cone motility. FASEB J 2016; 31:1368-1381. [PMID: 28007781 DOI: 10.1096/fj.201600686rr] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 06/05/2016] [Accepted: 12/12/2016] [Indexed: 11/11/2022]
Abstract
We have previously reported that transient receptor potential vanilloid 2 (TRPV2) can be activated by mechanical stimulation, which enhances axonal outgrowth in developing neurons; however, the molecular mechanisms that govern the contribution of TRPV2 activation to axonal outgrowth remain unclear. In the present study, we examined this mechanism by using PC12 cells as a neuronal model. Overexpression of TRPV2 enhanced axonal outgrowth in a mechanical stimulus-dependent manner. Accumulation of TRPV2 at the cell surface was 4-fold greater in the growth cone compared with the soma. In the growth cone, TRPV2 is not static, but dynamically accumulates (within ∼100 ms) to the site of mechanical stimulation. The dynamic and acute clustering of TRPV2 can enhance very weak mechanical stimuli via focal accumulation of TRPV2. Focal application of mechanical stimuli dramatically increased growth cone motility and caused actin reorganization via activation of TRPV2. We also found that TRPV2 physically interacts with actin and that changes in the actin cytoskeleton are required for its activation. Here, we demonstrated for the first time to our knowledge that TRPV2 clustering is induced by mechanical stimulation generated by axonal outgrowth and that TRPV2 activation is triggered by actin rearrangements that result from mechanical stimulation. Moreover, TRPV2 activation enhances growth cone motility and actin accumulation to promote axonal outgrowth. Sugio, S., Nagasawa, M., Kojima, I., Ishizaki, Y., Shibasaki, K. Transient receptor potential vanilloid 2 activation by focal mechanical stimulation requires interaction with the actin cytoskeleton and enhances growth cone motility.
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Affiliation(s)
- Shouta Sugio
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masami Nagasawa
- Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Itaru Kojima
- Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan;
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Miyata S, Kurachi M, Sakurai N, Yanagawa Y, Ishizaki Y, Mikuni M, Fukuda M. Gene expression alterations in the medial prefrontal cortex and blood cells in a mouse model of depression during menopause. Heliyon 2016; 2:e00219. [PMID: 28054037 PMCID: PMC5198744 DOI: 10.1016/j.heliyon.2016.e00222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/30/2016] [Accepted: 12/19/2016] [Indexed: 01/09/2023] Open
Abstract
Aims The prevalence of major depressive disorder (MDD) is higher in women than in men, and this may be due to the decline in estrogen levels that occurs during the menopausal transition. We studied the biological alterations in the medial prefrontal cortex (mPFC), which is a region that is highly implicated in the neurobiology of MDD, and the blood cells (BCs) of ovariectomized (OVX) mice subjected to chronic mild stress (CMS), which represents a mouse model of depression during menopause. Main methods The mPFC and the BCs were obtained from the same individuals. Gene expression levels were analyzed by microarray. The data were used for the Ingenuity Pathway Analysis and the Gene Ontology analysis. Key findings The gene expression alterations (GEAs) induced by OVX were mainly associated with ribosomal and mitochondrial functions in both the mPFC and the BCs. Rapamycin-insensitive companion of mTOR (RICTOR) was identified as a possible upstream regulator of the OVX-induced GEAs in both tissues. The CMS-induced GEAs were associated with retinoic acid receptor signaling, inflammatory cytokines and post-synaptic density in the mPFC, but not in the BCs. Significance OVX and CMS independently affect biological pathways in the mPFC, which is involved in the development of the depression-like phenotype. Because a subset of the OVX-induced GEAs in the mPFC also occurred in the BCs, the GEAs in the BCs might be a useful probe to predict biological pathways in the corresponding brain tissue under specific conditions such as OVX in females.
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Affiliation(s)
- Shigeo Miyata
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan; Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Noriko Sakurai
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuchio Yanagawa
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masahiko Mikuni
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masato Fukuda
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
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Yamaguchi Y, Torisu H, Kira R, Ishizaki Y, Sakai Y, Sanefuji M, Ichiyama T, Oka A, Kishi T, Kimura S, Kubota M, Takanashi J, Takahashi Y, Tamai H, Natsume J, Hamano S, Hirabayashi S, Maegaki Y, Mizuguchi M, Minagawa K, Yoshikawa H, Kira J, Kusunoki S, Hara T. A nationwide survey of pediatric acquired demyelinating syndromes in Japan. Neurology 2016; 87:2006-2015. [PMID: 27742816 PMCID: PMC5109945 DOI: 10.1212/wnl.0000000000003318] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [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: 10/21/2014] [Accepted: 07/28/2016] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate the clinical and epidemiologic features of pediatric acquired demyelinating syndromes (ADS) of the CNS in Japan. METHODS We conducted a nationwide survey and collected clinical data on children with ADS aged 15 years or younger, who visited hospitals between 2005 and 2007. RESULTS Among 977 hospitals enrolled, 723 (74.0%) responded to our inquiries and reported a total of 439 patients as follows: 244 with acute disseminated encephalomyelitis (ADEM), 117 with multiple sclerosis (MS), 14 with neuromyelitis optica (NMO), and 64 with other ADS. We collected and analyzed detailed data from 204 cases, including those with ADEM (66), MS (58), and NMO (10). We observed the following: (1) the estimated annual incidence rate of pediatric ADEM in Japan was 0.40 per 100,000 children (95% confidence interval [CI], 0.34-0.46), with the lowest prevalence in the north; (2) the estimated prevalence rate of MS was 0.69 per 100,000 children (95% CI, 0.58-0.80), with the lowest prevalence in the south; (3) NMO in Japan was rare, with an estimated prevalence of 0.06 per 100,000 children (95% CI, 0.04-0.08); and (4) the sex ratio and mean age at onset varied by ADS type, and (5) male/female ratios correlated with ages at onset in each ADS group. CONCLUSIONS Our results clarify the characteristic clinical features of pediatric ADS in the Japanese population.
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Affiliation(s)
- Y Yamaguchi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - H Torisu
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan.
| | - R Kira
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Y Ishizaki
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Y Sakai
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - M Sanefuji
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - T Ichiyama
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - A Oka
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - T Kishi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - S Kimura
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - M Kubota
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - J Takanashi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Y Takahashi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - H Tamai
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - J Natsume
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - S Hamano
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - S Hirabayashi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Y Maegaki
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - M Mizuguchi
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - K Minagawa
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - H Yoshikawa
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - J Kira
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - S Kusunoki
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - T Hara
- From the Department of Pediatrics (Y.Y., H. Torisu, R.K., Y.I., Y.S., M.S., T.H.) and Department of Neurology, Neurological Institute (J.K.), Graduate School of Medical Sciences, Kyushu University, Fukuoka; Department of Pediatrics (H. Torisu), Fukuoka Dental College Medical and Dental Hospital, Fukuoka; Department of Pediatrics (T.I.), Yamaguchi University Graduate School of Medicine, Ube; Department of Pediatrics (A.O.), Kyorin University School of Medicine, Hachioji; Department of Pediatrics (T.K.), Tokyo Women's Medical University, Tokyo; Department of Child Development Pediatrics (S. Kimura), Kumamoto University Graduate School, Kumamoto; Division of Neurology (M.K.), National Center for Child Health and Development, Tokyo; Department of Pediatrics (J.T.), Kameda Medical Center, Kamogawa; National Epilepsy Center (Y.T.), Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka; Department of Pediatrics (H. Tamai), Osaka Medical College, Takatsuki; Department of Pediatrics (J.N.), Nagoya University Graduate School of Medicine, Nagoya; Department of Neurology (S. Hamano), Saitama Children's Medical Center, Saitama; Department of Neurology (S. Hirabayashi), Nagano Children's Hospital, Azumino; Division of Child Neurology (Y.M.), Faculty of Medicine, Tottori University, Yonago; Department of Developmental Medical Sciences (M.M.), Graduate School of Medicine, The University of Tokyo; Department of Pediatrics (K.M.), Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo; Department of Pediatric Neurology (H.Y.), Nagaoka Habilitation and Medical Center for Severely Handicapped Children, Nagaoka; and Department of Neurology (S. Kusunoki), Kinki University Faculty of Medicine, Osaka-Sayama, Japan
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19
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Naruse M, Ishizaki Y, Ikenaka K, Tanaka A, Hitoshi S. Origin of oligodendrocytes in mammalian forebrains: a revised perspective. J Physiol Sci 2016; 67:63-70. [PMID: 27573166 PMCID: PMC5368213 DOI: 10.1007/s12576-016-0479-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 08/16/2016] [Indexed: 12/11/2022]
Abstract
Oligodendrocyte precursor cells (OPCs) appear in the late embryonic brain, mature into oligodendrocytes (OLs), and form myelin in the postnatal brain. It has been proposed that early born OPCs derived from the ventral forebrain are eliminated postnatally and late-born OLs predominate in the adult mouse cortex. However, the temporal and regional niche for cortical OL generation, which persists throughout life in adult mammals, remains to be determined. Our recent study provides new insight into self-renewing and multipotent neural stem cells (NSCs). Our results, together with previous studies, suggest that NSCs at the dorsoventral boundary are uniquely specialized to produce myelin-forming OLs in the cortex during a restricted temporal window. These findings may help identify transcription factors or gene expression patterns which confer neural precursors with the characteristic ability of dorsoventral boundary NSCs to differentiate into OLs, and facilitate the development of new strategies for regenerative medicine of the damaged brain.
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Affiliation(s)
- Masae Naruse
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Kazuhiro Ikenaka
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan
| | - Aoi Tanaka
- Department of Integrative Physiology, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Seiji Hitoshi
- Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, Okazaki, Japan.
- Department of Integrative Physiology, Shiga University of Medical Science, Otsu, Shiga, Japan.
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20
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Kurachi M, Mikuni M, Ishizaki Y. Extracellular Vesicles from Vascular Endothelial Cells Promote Survival, Proliferation and Motility of Oligodendrocyte Precursor Cells. PLoS One 2016; 11:e0159158. [PMID: 27403742 PMCID: PMC4942096 DOI: 10.1371/journal.pone.0159158] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [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: 03/18/2016] [Accepted: 06/28/2016] [Indexed: 01/02/2023] Open
Abstract
We previously examined the effect of brain microvascular endothelial cell (MVEC) transplantation on rat white matter infarction, and found that MVEC transplantation promoted remyelination of demyelinated axons in the infarct region and reduced apoptotic death of oligodendrocyte precursor cells (OPCs). We also found that the conditioned medium (CM) from cultured MVECs inhibited apoptosis of cultured OPCs. In this study, we examined contribution of extracellular vesicles (EVs) contained in the CM to its inhibitory effect on OPC apoptosis. Removal of EVs from the CM by ultracentrifugation reduced its inhibitory effect on OPC apoptosis. To confirm whether EVs derived from MVECs are taken up by cultured OPCs, we labeled EVs with PKH67, a fluorescent dye, and added them to OPC cultures. Many vesicular structures labeled with PKH67 were found within OPCs immediately after their addition. Next we examined the effect of MVEC-derived EVs on OPC behaviors. After 2 days in culture with EVs, there was significantly less pyknotic and more BrdU-positive OPCs when compared to control. We also examined the effect of EVs on motility of OPCs. OPCs migrated longer in the presence of EVs when compared to control. To examine whether these effects on cultured OPCs are shared by EVs from endothelial cells, we prepared EVs from conditioned media of several types of endothelial cells, and tested their effects on cultured OPCs. EVs from all types of endothelial cells we examined reduced apoptosis of OPCs and promoted their motility. Identification of the molecules contained in EVs from endothelial cells may prove helpful for establishment of effective therapies for demyelinating diseases.
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Affiliation(s)
- Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masahiko Mikuni
- Department of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
- * E-mail:
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21
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Miyata S, Kurachi M, Okano Y, Sakurai N, Kobayashi A, Harada K, Yamagata H, Matsuo K, Takahashi K, Narita K, Fukuda M, Ishizaki Y, Mikuni M. Blood Transcriptomic Markers in Patients with Late-Onset Major Depressive Disorder. PLoS One 2016; 11:e0150262. [PMID: 26926397 PMCID: PMC4771207 DOI: 10.1371/journal.pone.0150262] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [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: 01/20/2016] [Accepted: 02/11/2016] [Indexed: 01/09/2023] Open
Abstract
We investigated transcriptomic markers of late-onset major depressive disorder (LOD; onset age of first depressive episode ≥ 50 years) from the genes expressed in blood cells and identified state-dependent transcriptomic markers in these patients. We assessed the genes expressed in blood cells by microarray and found that the expression levels of 3,066 probes were state-dependently changed in the blood cells of patients with LOD. To select potential candidates from those probes, we assessed the genes expressed in the blood of an animal model of depression, ovariectomized female mice exposed to chronic ultra-mild stress, by microarray and cross-matched the differentially expressed genes between the patients and the model mice. We identified 14 differentially expressed genes that were similarly changed in both patients and the model mice. By assessing statistical significance using real-time quantitative PCR (RT-qPCR), the following 4 genes were selected as candidates: cell death-inducing DFFA-like effector c (CIDEC), ribonuclease 1 (RNASE1), solute carrier family 36 member-1 (SLC36A1), and serine/threonine/tyrosine interacting-like 1 (STYXL1). The discriminating ability of these 4 candidate genes was evaluated in an independent cohort that was validated. Among them, CIDEC showed the greatest discriminant validity (sensitivity 91.3% and specificity 87.5%). Thus, these 4 biomarkers should be helpful for properly diagnosing LOD.
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Affiliation(s)
- Shigeo Miyata
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- * E-mail:
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Yoshiko Okano
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Noriko Sakurai
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Ayumi Kobayashi
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Kenichiro Harada
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Hirotaka Yamagata
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Koji Matsuo
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Keisuke Takahashi
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Kosuke Narita
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masato Fukuda
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masahiko Mikuni
- Departments of Psychiatry and Neuroscience, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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22
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Iijima K, Kurachi M, Shibasaki K, Naruse M, Puentes S, Imai H, Yoshimoto Y, Mikuni M, Ishizaki Y. Transplanted microvascular endothelial cells promote oligodendrocyte precursor cell survival in ischemic demyelinating lesions. J Neurochem 2015. [DOI: 10.1111/jnc.13262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keiya Iijima
- Department of Neurosurgery; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Masae Naruse
- Department of Molecular and Cellular Neurobiology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Sandra Puentes
- Department of Neurosurgery; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Hideaki Imai
- Department of Neurosurgery; Tokyo University Graduate School of Medicine; Bunkyo-ku Tokyo Japan
| | - Yuhei Yoshimoto
- Department of Neurosurgery; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Masahiko Mikuni
- Department of Psychiatry and Neuroscience; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology; Gunma University Graduate School of Medicine; Maebashi Gunma Japan
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23
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Shibasaki K, Sugio S, Takao K, Yamanaka A, Miyakawa T, Tominaga M, Ishizaki Y. TRPV4 activation at the physiological temperature is a critical determinant of neuronal excitability and behavior. Pflugers Arch 2015; 467:2495-507. [PMID: 26250433 DOI: 10.1007/s00424-015-1726-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 07/26/2015] [Accepted: 07/28/2015] [Indexed: 11/25/2022]
Abstract
For homeothermic animals, constant body temperature is an important determinant of brain function. It is well established that changes in brain temperature dynamically influence hippocampal activity. We previously reported that the thermosensor TRPV4 (activated above 34 °C) is activated at the physiological temperature in hippocampal neurons and controls neuronal excitability in vitro. Here, we examined if TRPV4 regulates neuronal excitability through its activation at the physiological temperature in vivo. We found that TRPV4-deficient (TRPV4KO) mice exhibit reduced depression-like and social behaviors compared to wild-type (WT) mice, and the number of c-fos positive cells in the dentate gyrus was significantly reduced upon the depression-like behaviors. We measured resting membrane potentials (RMPs) in the hippocampal granule cells from slice preparations at 35 °C and found that TRPV4-positive neurons significantly depolarized the RMPs through TRPV4 activation at the physiological temperature. The depolarization increased the spike numbers depending on the enhancement of TRPV4 activation. We also found that theta-frequency electroencephalogram (EEG) activities in TRPV4KO mice during wake periods were significantly reduced compared with those in WT mice. Taken together, we report for the first time that TRPV4 activation at the physiological temperature is important to regulate neuronal excitability and behaviors in mammals.
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Affiliation(s)
- Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan.
| | - Shouta Sugio
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
| | - Keizo Takao
- Section of Behavior Patterns, Maebashi, Japan
- Japan Science and Technology Agency, Core Research for Evolutional Science and Technology (CREST), Tokyo, Japan
| | - Akihiro Yamanaka
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan
| | - Tsuyoshi Miyakawa
- Section of Behavior Patterns, Maebashi, Japan
- Japan Science and Technology Agency, Core Research for Evolutional Science and Technology (CREST), Tokyo, Japan
- Division of Systems Medicine, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, 470-7792, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, Okazaki, Japan
- Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki, 444-8585, Japan
- Department of Physiological Sciences, The Graduate University for Advanced Studies, Okazaki, 444-8585, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, 371-8511, Japan
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24
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Naruse M, Ishino Y, Kumar A, Ono K, Takebayashi H, Yamaguchi M, Ishizaki Y, Ikenaka K, Hitoshi S. The Dorsoventral Boundary of the Germinal Zone is a Specialized Niche for the Generation of Cortical Oligodendrocytes during a Restricted Temporal Window. Cereb Cortex 2015; 26:2800-2810. [DOI: 10.1093/cercor/bhv141] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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25
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Naruse M, Shibasaki K, Ishizaki Y. FGF-2 signal promotes proliferation of cerebellar progenitor cells and their oligodendrocytic differentiation at early postnatal stage. Biochem Biophys Res Commun 2015; 463:1091-6. [PMID: 26079890 DOI: 10.1016/j.bbrc.2015.06.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 05/28/2015] [Accepted: 06/08/2015] [Indexed: 12/18/2022]
Abstract
The origins and developmental regulation of cerebellar oligodendrocytes are largely unknown, although some hypotheses of embryonic origins have been suggested. Neural stem cells exist in the white matter of postnatal cerebellum, but it is unclear whether these neural stem cells generate oligodendrocytes at postnatal stages. We previously showed that cerebellar progenitor cells, including neural stem cells, widely express CD44 at around postnatal day 3. In the present study, we showed that CD44-positive cells prepared from the postnatal day 3 cerebellum gave rise to neurospheres, while CD44-negative cells prepared from the same cerebellum did not. These neurospheres differentiated mainly into oligodendrocytes and astrocytes, suggesting that CD44-positive neural stem/progenitor cells might generate oligodendrocytes in postnatal cerebellum. We cultured CD44-positive cells from the postnatal day 3 cerebellum in the presence of signaling molecules known as mitogens or inductive differentiation factors for oligodendrocyte progenitor cells. Of these, only FGF-2 promoted survival and proliferation of CD44-positive cells, and these cells differentiated into O4+ oligodendrocytes. Furthermore, we examined the effect of FGF-2 on cerebellar oligodendrocyte development ex vivo. FGF-2 enhanced proliferation of oligodendrocyte progenitor cells and increased the number of O4+ and CC1+ oligodendrocytes in slice cultures. These results suggest that CD44-positive cells might be a source of cerebellar oligodendrocytes and that FGF-2 plays important roles in their development at an early postnatal stage.
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Affiliation(s)
- Masae Naruse
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan.
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26
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Shibasaki K, Tominaga M, Ishizaki Y. Hippocampal neuronal maturation triggers post-synaptic clustering of brain temperature-sensor TRPV4. Biochem Biophys Res Commun 2015; 458:168-73. [PMID: 25637662 DOI: 10.1016/j.bbrc.2015.01.087] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/19/2015] [Indexed: 01/16/2023]
Abstract
Compartmentalization of neuronal function is achieved via specifically localized clustering of ion channels in discrete subcellular membrane domains. Transient receptor potential (TRP) channels exhibit highly variable cellular and subcellular patterns of expression. We previously revealed that the thermo-sensor TRPV4 (activated above 34 °C) is gated by physiological brain temperatures in hippocampal neurons and thereby controls their excitability. Here, we examined synaptic clustering of TRPV4 in developing hippocampal neurons. We found that TRPV4 accumulated in the soma of immature hippocampal neurons, and did not localize to post-synaptic locations although PSD-95-labeled post-synaptic structures were evident. During the maturation of neurons, TRPV4 was targeted to dendrites and also clustered at post-synaptic locations. Taken together, we reveal that TRPV4 localizes to post-synaptic sites and the post-synaptic targeting is strictly regulated in a neuronal maturation-dependent manner.
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Affiliation(s)
- Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan.
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, Okazaki 444-8787, Japan; Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787, Japan; Department of Physiological Sciences, The Graduate University for Advanced Studies, Okazaki 444-8585, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan
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27
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Akahoshi N, Kamata S, Kubota M, Hishiki T, Nagahata Y, Matsuura T, Yamazaki C, Yoshida Y, Yamada H, Ishizaki Y, Suematsu M, Kasahara T, Ishii I. Neutral aminoaciduria in cystathionine β-synthase-deficient mice, an animal model of homocystinuria. Am J Physiol Renal Physiol 2014; 306:F1462-76. [DOI: 10.1152/ajprenal.00623.2013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The kidney is one of the major loci for the expression of cystathionine β-synthase (CBS) and cystathionine γ-lyase (CTH). While CBS-deficient ( Cbs−/−) mice display homocysteinemia/methioninemia and severe growth retardation, and rarely survive beyond the first 4 wk, CTH-deficient ( Cth−/−) mice show homocysteinemia/cystathioninemia but develop with no apparent abnormality. This study examined renal amino acid reabsorption in those mice. Although both 2-wk-old Cbs−/− and Cth−/− mice had normal renal architecture, their serum/urinary amino acid profiles largely differed from wild-type mice. The most striking feature was marked accumulation of Met and cystathionine in serum/urine/kidney samples of Cbs−/− and Cth−/− mice, respectively. Levels of some neutral amino acids (Val, Leu, Ile, and Tyr) that were not elevated in Cbs−/− serum were highly elevated in Cbs−/− urine, and urinary excretion of other neutral amino acids (except Met) was much higher than expected from their serum levels, demonstrating neutral aminoaciduria in Cbs−/− (not Cth−/−) mice. Because the bulk of neutral amino acids is absorbed via a B0AT1 transporter and Met has the highest substrate affinity for B0AT1 than other neutral amino acids, hypermethioninemia may cause hyperexcretion of neutral amino acids.
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Affiliation(s)
- Noriyuki Akahoshi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
- Department of Immunology, Akita University Graduate School of Medicine, Akita, Japan; and
| | - Shotaro Kamata
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Masashi Kubota
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Takako Hishiki
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Yoshiko Nagahata
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Tomomi Matsuura
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Chiho Yamazaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yuka Yoshida
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hidenori Yamada
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Makoto Suematsu
- Japan Science and Technology Agency (JST), Exploratory Research for Advanced Technology (ERATO), Suematsu Gas Biology Project, Tokyo, Japan
| | - Tadashi Kasahara
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
| | - Isao Ishii
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
- Department of Biochemistry, Keio University Graduate School of Pharmaceutical Sciences, Tokyo, Japan
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28
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Shibasaki K, Ikenaka K, Tamalu F, Tominaga M, Ishizaki Y. A novel subtype of astrocytes expressing TRPV4 (transient receptor potential vanilloid 4) regulates neuronal excitability via release of gliotransmitters. J Biol Chem 2014; 289:14470-80. [PMID: 24737318 DOI: 10.1074/jbc.m114.557132] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Astrocytes play active roles in the regulation of synaptic transmission. Neuronal excitation can evoke Ca(2+) transients in astrocytes, and these Ca(2+) transients can modulate neuronal excitability. Although only a subset of astrocytes appears to communicate with neurons, the types of astrocytes that can regulate neuronal excitability are poorly characterized. We found that ∼30% of astrocytes in the brain express transient receptor potential vanilloid 4 (TRPV4), indicating that astrocytic subtypes can be classified on the basis of their expression patterns. When TRPV4(+) astrocytes are activated by ligands such as arachidonic acid, the activation propagates to neighboring astrocytes through gap junctions and by ATP release from the TRPV4(+) astrocytes. After activation, both TRPV4(+) and TRPV4(-) astrocytes release glutamate, which acts as an excitatory gliotransmitter to increase synaptic transmission through type 1 metabotropic glutamate receptor (mGluR). Our results indicate that TRPV4(+) astrocytes constitute a novel subtype of the population and are solely responsible for initiating excitatory gliotransmitter release to enhance synaptic transmission. We propose that TRPV4(+) astrocytes form a core of excitatory glial assembly in the brain and function to efficiently increase neuronal excitation in response to endogenous TRPV4 ligands.
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Affiliation(s)
- Koji Shibasaki
- From the Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan,
| | - Kazuhiro Ikenaka
- Division of Neurobiology Neuroinformatics, Department of Physiological Sciences, The Graduate University for Advanced Studies, Okazaki 444-8585, Japan
| | - Fuminobu Tamalu
- Department of Physiology, Saitama Medical University, Moroyama 350-0495, Japan
| | - Makoto Tominaga
- Department of Physiological Sciences, The Graduate University for Advanced Studies, Okazaki 444-8585, Japan, Okazaki Institute for Integrative Bioscience, National Institutes of Natural Sciences, Okazaki 444-8787, Japan, Division of Cell Signaling, National Institute for Physiological Sciences, and
| | - Yasuki Ishizaki
- From the Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan
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29
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Kayakabe M, Kakizaki T, Kaneko R, Sasaki A, Nakazato Y, Shibasaki K, Ishizaki Y, Saito H, Suzuki N, Furuya N, Yanagawa Y. Motor dysfunction in cerebellar Purkinje cell-specific vesicular GABA transporter knockout mice. Front Cell Neurosci 2014; 7:286. [PMID: 24474904 PMCID: PMC3893617 DOI: 10.3389/fncel.2013.00286] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 12/20/2013] [Indexed: 01/24/2023] Open
Abstract
γ-Aminobutyric acid (GABA) is a major inhibitory neurotransmitter in the adult mammalian central nervous system and plays modulatory roles in neural development. The vesicular GABA transporter (VGAT) is an essential molecule for GABAergic neurotransmission due to its role in vesicular GABA release. Cerebellar Purkinje cells (PCs) are GABAergic projection neurons that are indispensable for cerebellar function. To elucidate the significance of VGAT in cerebellar PCs, we generated and characterized PC-specific VGAT knockout (L7-VGAT) mice. VGAT mRNAs and proteins were specifically absent in the 40-week-old L7-VGAT PCs. The morphological characteristics, such as lamination and foliation of the cerebellar cortex, of the L7-VGAT mice were similar to those of the control littermate mice. Moreover, the protein expression levels and patterns of pre- (calbindin and parvalbumin) and postsynaptic (GABA-A receptor α1 subunit and gephyrin) molecules between the L7-VGAT and control mice were similar in the deep cerebellar nuclei that receive PC projections. However, the L7-VGAT mice performed poorly in the accelerating rotarod test and displayed ataxic gait in the footprint test. The L7-VGAT mice also exhibited severer ataxia as VGAT deficits progressed. These results suggest that VGAT in cerebellar PCs is not essential for the rough maintenance of cerebellar structure, but does play an important role in motor coordination. The L7-VGAT mice are a novel model of ataxia without PC degeneration, and would also be useful for studying the role of PCs in cognition and emotion.
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Affiliation(s)
- Mikiko Kayakabe
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine Maebashi, Japan ; Japan Science and Technology Agency CREST, Tokyo, Japan ; Department of Otolaryngology-Head and Neck Surgery, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Toshikazu Kakizaki
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine Maebashi, Japan ; Japan Science and Technology Agency CREST, Tokyo, Japan
| | - Ryosuke Kaneko
- Japan Science and Technology Agency CREST, Tokyo, Japan ; Institute of Experimental Animal Research, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Atsushi Sasaki
- Department of Pathology, Saitama Medical University Moroyama, Japan
| | - Yoichi Nakazato
- Department of Human Pathology, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Hiromitsu Saito
- Department of Animal Genomics, Functional Genomics Institute, Mie University Life Science Research Center Tsu, Japan
| | - Noboru Suzuki
- Department of Animal Genomics, Functional Genomics Institute, Mie University Life Science Research Center Tsu, Japan
| | - Nobuhiko Furuya
- Department of Otolaryngology-Head and Neck Surgery, Gunma University Graduate School of Medicine Maebashi, Japan
| | - Yuchio Yanagawa
- Department of Genetic and Behavioral Neuroscience, Gunma University Graduate School of Medicine Maebashi, Japan ; Japan Science and Technology Agency CREST, Tokyo, Japan
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Shibasaki K, Ishizaki Y, Mandadi S. Astrocytes express functional TRPV2 ion channels. Biochem Biophys Res Commun 2013; 441:327-32. [PMID: 24161738 DOI: 10.1016/j.bbrc.2013.10.046] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [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: 10/01/2013] [Accepted: 10/10/2013] [Indexed: 12/20/2022]
Abstract
Thermosensitive transient receptor potential (thermo TRP) channels are important for sensory transduction. Among them, TRPV2 has an interesting characteristic of being activated by very high temperature (>52 °C). In addition to the heat sensor function, TRPV2 also acts as a mechanosensor, an osomosensor and a lipid sensor. It has been reported that TRPV2 is expressed in heart, intestine, pancreas and sensory nerves. In the central nervous system, neuronal TRPV2 expression was reported, however, glial expression and the precise roles of TRPV2 have not been determined. To explore the functional expression of TRPV2 in astrocytes, the expression was determined by histological and physiological methods. Interestingly, TRPV2 expression was detected in plasma membrane of astrocytes, and the astrocytic TRPV2 was activated by very high temperature (>50 °C) consistent with the reported characteristic. We revealed that the astrocytic TRPV2 was also activated by lysophosphatidylcholine, a known endogenous lipid ligand for TRPV2, suggesting that astrocytic TRPV2 might regulate neuronal activities in response to lipid metabolism. Thus, for the first time we revealed that TRPV2 is functionally expressed in astrocytes in addition to neurons.
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Affiliation(s)
- Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi 371-8511, Japan.
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Okano-Uchida T, Naruse M, Ikezawa T, Shibasaki K, Ishizaki Y. Cerebellar neural stem cells differentiate into two distinct types of astrocytes in response to CNTF and BMP2. Neurosci Lett 2013; 552:15-20. [DOI: 10.1016/j.neulet.2013.07.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/11/2013] [Accepted: 07/15/2013] [Indexed: 11/25/2022]
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Naruse M, Shibasaki K, Yokoyama S, Kurachi M, Ishizaki Y. Dynamic changes of CD44 expression from progenitors to subpopulations of astrocytes and neurons in developing cerebellum. PLoS One 2013; 8:e53109. [PMID: 23308146 PMCID: PMC3537769 DOI: 10.1371/journal.pone.0053109] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [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: 07/31/2012] [Accepted: 11/26/2012] [Indexed: 12/19/2022] Open
Abstract
We previously reported that CD44-positive cells were candidates for astrocyte precursor cells in the developing cerebellum, because cells expressing high levels of CD44 selected by fluorescence-activated cell sorting (FACS) gave rise only to astrocytes in vitro. However, whether CD44 is a specific cell marker for cerebellar astrocyte precursor cells in vivo is unknown. In this study, we used immunohistochemistry, in situ hybridization, and FACS to analyze the spatial and temporal expression of CD44 and characterize the CD44-positive cells in the mouse cerebellum during development. CD44 expression was observed not only in astrocyte precursor cells but also in neural stem cells and oligodendrocyte precursor cells (OPCs) at early postnatal stages. CD44 expression in OPCs was shut off during oligodendrocyte differentiation. Interestingly, during development, CD44 expression was limited specifically to Bergmann glia and fibrous astrocytes among three types of astrocytes in cerebellum, and expression in astrocytes was shut off during postnatal development. CD44 expression was also detected in developing Purkinje and granule neurons but was limited to granule neurons in the adult cerebellum. Thus, at early developmental stages of the cerebellum, CD44 was widely expressed in several types of precursor cells, and over the course of development, the expression of CD44 became restricted to granule neurons in the adult.
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Affiliation(s)
- Masae Naruse
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Koji Shibasaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
- * E-mail: (KS); (YS)
| | - Shuichi Yokoyama
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Masashi Kurachi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuki Ishizaki
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Maebashi, Japan
- * E-mail: (KS); (YS)
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Puentes S, Kurachi M, Shibasaki K, Naruse M, Yoshimoto Y, Mikuni M, Imai H, Ishizaki Y. Brain microvascular endothelial cell transplantation ameliorates ischemic white matter damage. Brain Res 2012; 1469:43-53. [DOI: 10.1016/j.brainres.2012.06.042] [Citation(s) in RCA: 15] [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] [Received: 10/19/2011] [Revised: 06/22/2012] [Accepted: 06/26/2012] [Indexed: 11/25/2022]
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Yamada H, Akahoshi N, Kamata S, Hagiya Y, Hishiki T, Nagahata Y, Matsuura T, Takano N, Mori M, Ishizaki Y, Izumi T, Kumagai Y, Kasahara T, Suematsu M, Ishii I. Methionine excess in diet induces acute lethal hepatitis in mice lacking cystathionine γ-lyase, an animal model of cystathioninuria. Free Radic Biol Med 2012; 52:1716-26. [PMID: 22387178 DOI: 10.1016/j.freeradbiomed.2012.02.033] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 02/15/2012] [Accepted: 02/22/2012] [Indexed: 01/08/2023]
Abstract
Physiological roles of the transsulfuration pathway have been recognized by its contribution to the synthesis of cytoprotective cysteine metabolites, such as glutathione, taurine/hypotaurine, and hydrogen sulfide (H(2)S), whereas its roles in protecting against methionine toxicity remained to be clarified. This study aimed at revealing these roles by analyzing high-methionine diet-fed transsulfuration-defective cystathionine γ-lyase-deficient (Cth(-/-)) mice. Wild-type and Cth(-/-) mice were fed a standard diet (1 × Met: 0.44%) or a high-methionine diet (3 × Met or 6 × Met), and hepatic conditions were monitored by serum biochemistry and histology. Metabolome analysis was performed for methionine derivatives using capillary electrophoresis- or liquid chromatography-mass spectrometry and sulfur-detecting gas chromatography. The 6 × Met-fed Cth(-/-) (not 1 × Met-fed Cth(-/-) or 6 × Met-fed wild type) mice displayed acute hepatitis, which was characterized by markedly elevated levels of serum alanine/aspartate aminotransferases and serum/hepatic lipid peroxidation, inflammatory cell infiltration, and hepatocyte ballooning; thereafter, they died of gastrointestinal bleeding due to coagulation factor deficiency. After 1 week on 6 × Met, blood levels of ammonia/homocysteine and hepatic levels of methanethiol/3-methylthiopropionate (a methionine transamination product/methanethiol precursor) became significantly higher in Cth(-/-) mice than in wild-type mice. Although hepatic levels of methionine sulfoxide became higher in 6 × Met-fed wild-type mice and Cth(-/-) mice, those of glutathione, taurine/hypotaurine, and H(2)S became lower and serum levels of homocysteine became much higher in 6 × Met-fed Cth(-/-) mice than in wild-type mice. Thus, transsulfuration plays a critical role in the detoxification of excessive methionine by circumventing aberrant accumulation of its toxic transamination metabolites, including ammonia, methanethiol, and 3-methylthiopropionate, in addition to synthesizing cysteine-derived antioxidants to counteract accumulated pro-oxidants such as methionine sulfoxide and homocysteine.
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Affiliation(s)
- Hidenori Yamada
- Department of Biochemistry, School of Medicine, Keio University, Tokyo 160-8582, Japan
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Akahoshi N, Ishizaki Y, Yasuda H, Murashima YL, Shinba T, Goto K, Himi T, Chun J, Ishii I. Frequent spontaneous seizures followed by spatial working memory/anxiety deficits in mice lacking sphingosine 1-phosphate receptor 2. Epilepsy Behav 2011; 22:659-65. [PMID: 22019019 DOI: 10.1016/j.yebeh.2011.09.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 08/31/2011] [Accepted: 09/03/2011] [Indexed: 11/16/2022]
Abstract
The diverse physiological effects of sphingosine 1-phosphate (S1P) are mostly mediated by its five cognate G protein-coupled receptors, S1P(1)-S1P(5), which have attracted much attention as future drug targets. To gain insight into S1P(2)-mediated signaling, we analyzed frequent spontaneous seizures in S1P(2)-deficient (S1P(2)(-/-)) mice obtained after several backcrosses onto a C57BL/6N background. Full-time video recording of 120 S1P(2)(-/-) mice identified 420 seizures both day and night between postnatal days 25 and 45, which were accompanied by high-voltage synchronized cortical discharges and a series of typical episodes: wild run, tonic-clonic convulsion, freezing, and, occasionally, death. Nearly 40% of 224 S1P(2)(-/-) mice died after such seizures, while the remaining 60% of the mice survived to adulthood; however, approximately half of the deliveries from S1P(2)(-/-) pregnant mice resulted in neonatal death. In situ hybridization revealed exclusive s1p(2) expression in the hippocampal pyramidal/granular neurons of wild-type mice, and immunohistochemistry/microarray analyses identified enhanced gliosis in the whole hippocampus and its neighboring neocortex in seizure-prone adult S1P(2)(-/-) mice. Seizure-prone adult S1P(2)(-/-) mice displayed impaired spatial working memory in the eight-arm radial maze test and increased anxiety in the elevated plus maze test, whereas their passive avoidance learning memory performance in the step-through test and hippocampal long-term potentiation was indistinguishable from that of wild-type mice. Our findings suggest that blockade of S1P(2) signaling may cause seizures/hippocampal insults and impair some specific central nervous system functions.
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Affiliation(s)
- Noriyuki Akahoshi
- Department of Molecular and Cellular Neurobiology, Gunma University Graduate School of Medicine, Gunma, Japan
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Feng L, Eisenstat DD, Chiba S, Ishizaki Y, Gan L, Shibasaki K. Brn-3b inhibits generation of amacrine cells by binding to and negatively regulating DLX1/2 in developing retina. Neuroscience 2011; 195:9-20. [PMID: 21875655 DOI: 10.1016/j.neuroscience.2011.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 08/03/2011] [Accepted: 08/03/2011] [Indexed: 02/03/2023]
Abstract
During retinogenesis, the basic helix-loop-helix proneural gene math5 (atoh7) initiates the generation of the first-born neurons, retinal ganglion cells (RGCs), by activating a network of RGC transcription factors, including Brn-3b (POU4F2). Herein, we show that the expression of DLX1 and DLX2 is significantly down-regulated in math5-null retina but is markedly increased in Brn-3b-null retina. Interestingly, Brn-3b interacts with DLX1 through its homeodomain, and this interaction represses DLX1 activity. Retrovirus-mediated mis-expression of DLX1 or DLX2 dramatically increases the number of amacrine/bipolar cells and concurrently reduces rod photoreceptors. Conversely, combined ectopic expression of Brn-3b with DLX1 or DLX2 promotes the production of RGCs and inhibits amacrine cell differentiation. Thus, DLX1/2 play an essential role in cell fate selection between amacrine and RGCs. Brn-3b suppresses the role of DLX1/2 through physical interaction and biases the competent precursors toward RGC fates.
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Affiliation(s)
- L Feng
- Department of Ophthalmology, University of Rochester, NY 14642, USA
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Cai N, Kurachi M, Shibasaki K, Okano-Uchida T, Ishizaki Y. CD44-Positive Cells Are Candidates for Astrocyte Precursor Cells in Developing Mouse Cerebellum. Cerebellum 2011; 11:181-93. [DOI: 10.1007/s12311-011-0294-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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38
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Saito T, Shibasaki K, Kurachi M, Puentes S, Mikuni M, Ishizaki Y. Cerebral capillary endothelial cells are covered by the VEGF-expressing foot processes of astrocytes. Neurosci Lett 2011; 497:116-21. [DOI: 10.1016/j.neulet.2011.04.043] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 04/15/2011] [Accepted: 04/17/2011] [Indexed: 11/25/2022]
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Ibhazehiebo K, Iwasaki T, Okano-Uchida T, Shimokawa N, Ishizaki Y, Koibuchi N. Suppression of thyroid hormone receptor-mediated transcription and disruption of thyroid hormone-induced cerebellar morphogenesis by the polybrominated biphenyl mixture, BP-6. Neurotoxicology 2011; 32:400-9. [PMID: 21396401 DOI: 10.1016/j.neuro.2011.02.008] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 11/29/2010] [Accepted: 02/18/2011] [Indexed: 11/18/2022]
Abstract
Polybrominated biphenyls (PBBs) are polyhalogenated, bioaccumulative flame retardant chemicals, which have been used in a variety of consumer and household products. They were accidentally introduced into the food chain in Michigan in 1973 and have remained a source of health concern. Studies have shown that exposure to PBB may cause adverse neurotoxic effects. We therefore examined the effects of BP-6, a PBB mixture, on thyroid hormone (TH) receptor (TR)-mediated transcription, on TH-induced Purkinje cell dendritogenesis, and on TH-induced cerebellar granule cell neurite extension. Our study shows that BP-6 suppressed TR-mediated transcription in CV-1 cells. Mammalian two-hybrid studies revealed that BP-6 did not inhibit coactivator binding to TR nor did it recruit corepressors to TR. Further examination using the liquid chemiluminescent DNA pull down assay revealed partial dissociation of TR from TH response element (TRE). In primary rat cerebellar culture, BP-6 significantly suppressed TH-induced dendrite arborization of Purkinje cells, and in reaggregate rat granule cell culture, impaired TH-induced neurite extension of granule cells. Taken together, our results indicate that BP-6 may disrupt TH homeostasis and consequently impair normal neuronal development.
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Affiliation(s)
- Kingsley Ibhazehiebo
- Department of Integrative Physiology, Division of Biological Regulations, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, Japan
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Kiyohara H, Ishizaki Y, Suzuki Y, Katoh H, Hamada N, Ohno T, Takahashi T, Kobayashi Y, Nakano T. Radiation-induced ICAM-1 expression via TGF-β1 pathway on human umbilical vein endothelial cells; comparison between X-ray and carbon-ion beam irradiation. J Radiat Res 2011; 52:287-292. [PMID: 21343678 DOI: 10.1269/jrr.10061] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Adhesion of inflammatory cells to endothelial cells is considered to be involved in the process of radiation-induced damage and fibrosis. Intercellular adhesion molecule-1 (ICAM-1) and transforming growth factor-beta1 (TGF-β1) are thought to play important roles in this process. In this study, radiation-induced ICAM-1 expression on endothelial cells was investigated with the use of an inhibitor of TGF-β1 receptor kinase (SB431542) and the effects of X-ray and carbon-ion beam were compared. Cell cultures of human umbilical vein endothelial cells (HUVE cells) were incubated with TGF-β1 and irradiated with 140 KV X-ray. Next, HUVE cells were irradiated with X-ray and 220 MeV carbon-ion beam with or without SB431542. Immunofluorescence analysis was used to quantify ICAM-1 expression. The expression of ICAM-1 on HUVE cells was significantly increased by the stimulation with TGF-β1. Expression of ICAM-1 was increased by X-ray and carbon-ion beam irradiation and decreased significantly with SB431542 after both irradiations. The expression of ICAM-1 by 2 Gy of carbon-ion beam irradiation was 6.7 fold higher than that of non-irradiated cells, while 5 Gy of X-ray irradiation increased the expression of ICAM-1 by 2.5 fold. According to ICAM-1 expression, the effect of carbon-ion beam irradiation was about 2.2, 4.4 and 5.0 times greater than that of the same doses of X-ray irradiation (1, 2 and 5 Gy, respectively). The present results suggested that radiation-induced ICAM-1 expression on HUVE cells was, at least partially, regulated by TGF-β1. Carbon-ion beam induced significantly higher ICAM-1 expression than X-ray.
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Affiliation(s)
- Hiroki Kiyohara
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, Maebashi
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Abstract
In our sequential EEG study performed on 68 infants with various pre- and perinatal brain insults, we found peculiar abnormal fast activity (AFAs) in 12 patients. 9 of the 12 patients with AFAs later developed West syndrome (WS) compared with only 3 of the 56 patients without AFAs (p<0.001, χ(2) test). We analyzed these AFAs using EEG topography, and compared them with ictal fast activity (IFA) corresponding to tonic spasms observed later in the same patients after they had developed WS. We also investigated the clinical and EEG features in these patients. AFAs were first observed commonly at 4-5 months of CA, before the onset of WS. AFA topographic maps revealed posterior predominance in 11 of the 12 patients; IFA maps also showed posterior predominance but were more widely distributed. We propose that, though AFAs and IFAs are different, they share certain aspects of their pathophysiology, and that the maturational process of the occipital cortex plays an important role in the shared aspects. Since AFAs are observed before the onset of WS, they can be considered a sign that WS is imminent.
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Affiliation(s)
- F Endoh
- Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Sugiyama Y, Ishizaki Y, Imamura H, Sugo H, Yoshimoto J, Kawasaki S. Effects of intermittent Pringle's manoeuvre on cirrhotic compared with normal liver. Br J Surg 2010; 97:1062-9. [PMID: 20632273 DOI: 10.1002/bjs.7039] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Although patients with liver cirrhosis are supposed to tolerate ischaemia-reperfusion poorly, the exact impact of intermittent inflow clamping during hepatic resection of cirrhotic compared with normal liver remains unclear. METHODS Intermittent Pringle's manoeuvre was applied during minor hepatectomy in 172 patients with a normal liver, 59 with chronic hepatitis and 97 with liver cirrhosis. To assess hepatic injury, delta (D)-aspartate aminotransferase (AST) and D-alanine aminotransferase (ALT) (maximum level minus preoperative level) were calculated. To evaluate postoperative liver function, postoperative levels of total bilirubin, albumin and cholinesterase (ChE), and prothrombin time were measured. RESULTS Significant correlations between D-AST or D-ALT and clamping time were found in each group. The regression coefficients of the regression lines for D-AST and D-ALT in patients with normal liver were significantly higher than those in patients with cirrhotic liver. Irrespective of whether clamping time was 45 min or less, or at least 60 min, D-AST and D-ALT were significantly lower in patients with cirrhosis than in those with a normal liver. Parameters of hepatic functional reserve, such as total bilirubin, prothrombin time, albumin and ChE, were impaired significantly after surgery in patients with a cirrhotic liver. CONCLUSION Patients with liver cirrhosis had a smaller increase in aminotransferase levels following portal triad clamping than those with a normal liver. However, hepatic functional reserve in those with a cirrhotic liver seemed to be affected more after intermittent inflow occlusion.
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Affiliation(s)
- Y Sugiyama
- Department of Hepatobiliary-Pancreatic Surgery, Juntendo University School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
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43
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Sugiyama Y, Ishizaki Y, Imamura H, Sugo H, Yoshimoto J, Kawasaki S. Effects of intermittent Pringle's manoeuvre on cirrhotic compared with normal liver. Br J Surg 2010. [PMID: 20632273 DOI: 10.1002/bjs.7039.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND Although patients with liver cirrhosis are supposed to tolerate ischaemia-reperfusion poorly, the exact impact of intermittent inflow clamping during hepatic resection of cirrhotic compared with normal liver remains unclear. METHODS Intermittent Pringle's manoeuvre was applied during minor hepatectomy in 172 patients with a normal liver, 59 with chronic hepatitis and 97 with liver cirrhosis. To assess hepatic injury, delta (D)-aspartate aminotransferase (AST) and D-alanine aminotransferase (ALT) (maximum level minus preoperative level) were calculated. To evaluate postoperative liver function, postoperative levels of total bilirubin, albumin and cholinesterase (ChE), and prothrombin time were measured. RESULTS Significant correlations between D-AST or D-ALT and clamping time were found in each group. The regression coefficients of the regression lines for D-AST and D-ALT in patients with normal liver were significantly higher than those in patients with cirrhotic liver. Irrespective of whether clamping time was 45 min or less, or at least 60 min, D-AST and D-ALT were significantly lower in patients with cirrhosis than in those with a normal liver. Parameters of hepatic functional reserve, such as total bilirubin, prothrombin time, albumin and ChE, were impaired significantly after surgery in patients with a cirrhotic liver. CONCLUSION Patients with liver cirrhosis had a smaller increase in aminotransferase levels following portal triad clamping than those with a normal liver. However, hepatic functional reserve in those with a cirrhotic liver seemed to be affected more after intermittent inflow occlusion.
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Affiliation(s)
- Y Sugiyama
- Department of Hepatobiliary-Pancreatic Surgery, Juntendo University School of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
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Kurachi M, Cai N, Shibasaki K, Okano-Uchida T, Ishizaki Y. Characterization of CD44-positive cells in the developing mouse cerebellum. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.2152] [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: 10/19/2022]
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45
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Shibasaki K, Tominaga M, Ishizaki Y. A specific subtype of astrocytes regulates neuronal excitability through gliotransmitter release. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Taguchi K, Noriyuki T, Furonaka O, Kuroda Y, Akimoto E, Kuranishi F, Nakahara M, Fukuda T, Ishizaki Y, Okuda H, Hashimoto M, Yonehara S. [Metastatic lung cancer origin from osteosarcoma of mandible invading tracheal lumen]. Kyobu Geka 2009; 62:571-574. [PMID: 19588829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A 52-year-old woman underwent the surgical treatment for osteosarcoma of the left mandible in 2003 and was followed up afterward. She suffered from dry cough and bloody sputum, and was admitted to our hospital in April 2007. Computed tomography (CT) revealed several nodules in bilateral lung, and bronchofiberscopy showed the endobronchial tumor obstructing in the right main bronchus. The metastatic tumor progressed in the right main bronchus from the right S6 lung segment. The tumor rapidly progressed in the right bronchus in comparison with the CT findings in about 2 weeks, and the possibility of the tracheal obstruction was considered. She underwent the right middle and lower lobectomy, and the endobronchial tumor was pulled through the right main bronchus. The postoperative course was uneventful, the patient was discharged on 14th postoperative day, and the chemotherapy using cisplatin (CDDP) and adriamycin (ADR) is on-going.
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Affiliation(s)
- K Taguchi
- Department of General Thoracic Surgery, Onomichi General Hospital, Onomichi, Japan
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47
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Noriyuki T, Hamamoto M, Takazawa Y, Katoh K, Hashimoto M, Kuranishi F, Nakahara M, Fukuda T, Ishizaki Y, Okuda H, Akimoto E, Yonehara S. [Thymic carcinoma involving aortic arch; report of a case]. Kyobu Geka 2009; 62:417-421. [PMID: 19425386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Adenocarcinoma of the thymus is a very rare malignant tumor. The standard treatment for advanced thymic carcinoma has not yet been established, and the prognosis is poor. We report a case of thymic carcinoma that involving the aortic arch and the innominate vein. A 78-year-old woman was admitted to our hospital complaining of hoarseness in April 2007. The computed tomography (CT) scan showed an anterior mediastinal tumor contiguous to the aortic arch and the innominate vein with swelling lymphnodes. Microspcopic examinations of specimens obtained by CT-guided needle biopsy revealed poorly differenciated adenocarcinoma. The carcinoembryonic antigen (CEA) level of serum elevated at 54.9 ng/ml. Thymic carcinoma was diagnosed. The chemoradiotherapy [concurrent, carboplatin (CBDCA) + paclitaxel(TXL)-->vinorelbine (NVB), 60 Gy] was performed, but the effect of the therapy was limited. The resection of the tumor with a part of aortic arch and other peripheral tissues was performed in Augast 2007. The postoperative course was uneventful and the CEA level of serum lowered to the normal. She was discharged 30 days after surgery.
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Affiliation(s)
- Toshio Noriyuki
- Department of General Thoracic Surgery, Onomichi General Hospital, Onomichi, Japan
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Shibasaki K, Murayama N, Ono K, Tominaga M, Ishizaki Y. New positive feedback mechanism for regulation of axon outgrowth by membrane stretch. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.069] [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: 11/25/2022]
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49
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Akahoshi N, Kobayashi C, Ishizaki Y, Izumi T, Himi T, Suematsu M, Ishii I. Genetic background conversion ameliorates semi-lethality and permits behavioral analyses in cystathionine β-synthase-deficient mice, an animal model for hyperhomocysteinemia. Hum Mol Genet 2008; 17:1994-2005. [DOI: 10.1093/hmg/ddn097] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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50
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Kawaguchi Y, Noriyuki T, Kuroda Y, Kuranishi F, Nakahara M, Fukuda T, Ishizaki Y, Hotta R, Akimoto E, Mori H. [Right lung cancer with right aortic arch]. Kyobu Geka 2008; 61:113-117. [PMID: 18268946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
An abnormal shadow was detected on chest X-ray mass screening in an asymptomatic 63-year-old man. The further examinations revealed the shadow to be primary lung cancer (Rt. S6. adenocarcinoma, cT2N0M0, c-stage IB) with right aortic arch. We used 3 dimentional-computed tomography (3D-CT) to assess an anatomical feature of vessels in detail. The right lower lobectomy and the dissection of medi astinal lymph nodes was performed. We confirmed no abnormal anatomy of pulmonary artery and vein at surgery, and it was possible to perform right lower lobectomy with the common procedure. Since lymph node was found by intraopetrative pathological examination, since no metastasis from interlobar to subcarinal lymph node was found, we did not perform dissection of upper mediastinal dissection, which was equivalent to ND2a lymph nodes dissection of the left lung cancer in General Rule for Clinical and Pathological Record of Lung Cancer. The patient with right aortic arch is known to have variant anatomy of other intrathoracic vessels occasionally. 3D-CT was quite useful in assessing anatomical feature, and enabled us to perform safe operation.
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Affiliation(s)
- Yasuo Kawaguchi
- Department of Surgery, JA Onomichi General Hospital, Onomichi, Japan
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