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Izumi Y, Kataoka H, Takada-Takatori Y, Koyama Y, Irie K, Akaike A, Kume T. Isolation and Purification of Harpagogenin as an Nrf2-ARE Activator from the Tubers of Chinese Artichoke (Stachys sieboldii). Biol Pharm Bull 2023; 46:1576-1582. [PMID: 37914360 DOI: 10.1248/bpb.b23-00383] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Chinese artichoke tuber (Stachys sieboldii Miq.) is used as an herbal medicine as well as edible food. This study examined the effect of the Chinese artichoke extracts on the nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway that induces the expression of antioxidant enzymes to explore its novel characteristics. Hot water extracts exhibited relatively high ARE activity. ARE activity was observed in two fractions when the hot water extracts were separated in the presence of trifluoroacetic acid using HPLC. Conversely, the highly active fraction disappeared when the hot water extracts were separated in the absence of trifluoroacetic acid. These results indicate that acidic degradation produces active ingredients. The structural analysis of the two active fractions identified harpagide, which is an iridoid glucoside, and harpagogenin. In vitro experiments revealed that harpagide was converted into harpagogenin under acidic conditions and that harpagogenin, but not harpagide, had potent ARE activity. Therefore, this study identified harpagogenin, which is an acid hydrolysate of harpagide, as an ARE activator and suggests that Nrf2-ARE pathway activation by Chinese artichoke contributes to the antioxidative effect.
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Affiliation(s)
- Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University
| | - Harue Kataoka
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
| | | | - Yutaka Koyama
- Laboratory of Pharmacology, Kobe Pharmaceutical University
| | - Kazuhiro Irie
- Laboratory of Organic Chemistry in Life Science, Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University
| | | | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
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2
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Affiliation(s)
- Y Saishoji
- Address correspondence to Dr Y. Saishoji, Department of General Internal Medicine, National Hospital Organization Nagasaki Medical Center, Kubara 1001-1, Nagasaki, Omura 856-8562, Japan.
| | - Y Izumi
- From the Department of General Internal Medicine, National Hospital Organization Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki 856-8562, Japan
| | - Y Otsuka
- From the Department of General Internal Medicine, National Hospital Organization Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki 856-8562, Japan
| | - H Yura
- Department of Respiratory disease, National Hospital Organization Nagasaki Medical Center, Kubara 2-1001-1, Omura, Nagasaki 856-8562, Japan
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3
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HATA Y, Kuwabara T, Fujimoto D, Date R, Umemoto S, Kanki T, Nishiguchi Y, Kakizoe Y, Izumi Y, Ikeda H, Kakizuka A, Mukoyama M. POS-018 A NOVEL ATP-RETAINING COMPOUND, KUS121, ENHANCES ER-ASSOCIATED DEGRADATION AND EXERTS RENOPROTECTIVE EFFECTS AGAINST ACUTE KIDNEY INJURY. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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4
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Fujimoto D, Kuwabara T, Hata Y, Date R, Mizumoto T, Kakizoe Y, Izumi Y, Mukoyama M. POS-328 SUPPRESSION OF ER-ASSOCIATED DEGRADATION BY INTRAGLOMERULAR CROSS-COMMUNICATION BETWEEN MESANGIAL CELLS AND PODOCYTES CAUSES PODOCYTE INJURY IN DIABETIC KIDNEY DISEASE. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.349] [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] Open
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5
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Kato H, Sato H, Okuda M, Wu J, Koyama S, Izumi Y, Waku T, Iino M, Aoki M, Arawaka S, Ohta Y, Ishizawa K, Kawasaki K, Urano Y, Miyasaka T, Noguchi N, Kume T, Akaike A, Sugimoto H, Kato T. Therapeutic effect of a novel curcumin derivative GT863 on a mouse model of amyotrophic lateral sclerosis. Amyotroph Lateral Scler Frontotemporal Degener 2021; 23:489-495. [PMID: 34894926 DOI: 10.1080/21678421.2021.2012699] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The present study investigated the therapeutic effects of the curcumin derivative 3-[(1E)-2-(1H-indol-6-yl)ethenyl]-5-[(1E)-2-[2-methoxy-4-(2-pyridylmethoxy)phenyl]ethenyl]-1H-pyrazole (GT863) in amyotrophic lateral sclerosis (ALS). The inhibitory effect of GT863 on superoxide dismutase 1 (SOD1) aggregation was evaluated in cell-free assays. GT863 interfered with the conformational changes of the SOD1 protein and later, oligomeric aggregation. Furthermore, its antioxidant, anti-inflammatory, and neuroprotective effects were evaluated in cell-free and cultured cell assays. GT863 inhibited H2O2- and glutamate-induced cytotoxicity and activated an antioxidant responsive element pathway. Additionally, in vivo effects of GT863 in the ALS mice model were evaluated by its oral administration to H46R mutant SOD1 transgenic mice. Rotarod test showed that GT863 administration significantly slowed the progression of motor dysfunction in the mice. In addition, GT863 substantially reduced highly-aggregated SOD1, further preserving large neurons in the spinal cord of GT863-treated mice. Collectively, these results indicated that GT863 could be a viable therapeutic agent with multiple vital actions for the treatment of ALS.
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Affiliation(s)
- Hajime Kato
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan.,Department of Dentistry, Oral and Maxillofacial-Plastic and Reconstructive Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Hiroyasu Sato
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Michiaki Okuda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan.,Green Tech Co., Ltd, Kyoto, Japan
| | - Jun Wu
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Shingo Koyama
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Tomonori Waku
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto-shi, Japan
| | - Mitsuyoshi Iino
- Department of Dentistry, Oral and Maxillofacial-Plastic and Reconstructive Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Masashi Aoki
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Miyagi, Japan, and
| | - Shigeki Arawaka
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Yasuyuki Ohta
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Kenichi Ishizawa
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Kanan Kawasaki
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - Yasuomi Urano
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - Tomohiro Miyasaka
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - Noriko Noguchi
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Hachiro Sugimoto
- Green Tech Co., Ltd, Kyoto, Japan.,Faculty of Life and Medical Sciences, Doshisha University, Kyoto, Japan
| | - Takeo Kato
- Division of Neurology and Clinical Neuroscience, Department of Internal Medicine III, Yamagata University Faculty of Medicine, Yamagata, Japan
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6
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Matsumoto M, Miyamoto M, Sawahata M, Izumi Y, Takada-Takatori Y, Kume T. Establishing a high throughput drug screening system for cerebral ischemia using zebrafish larvae. J Pharmacol Sci 2021; 147:138-142. [PMID: 34294365 DOI: 10.1016/j.jphs.2021.06.006] [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: 12/24/2020] [Revised: 06/07/2021] [Accepted: 06/11/2021] [Indexed: 10/21/2022] Open
Abstract
We previously generated an ischemic stroke in a zebrafish model using N2 gas perfusion; however, this model was an unsuitable drug screening system due to low throughput. In this study, we examined a zebrafish ischemic stroke model using an oxygen absorber to assess drug effects. Hypoxic exposure more than 2 h using the oxygen absorber significantly induced cell death in the brain and damage to the neuronal cells. To confirm the utility of the ischemic model induced by the oxygen absorber, we treated zebrafish with neuroprotective agents. MK-801, an N-methyl-d-aspartate (NMDA) receptor antagonist, significantly suppressed cell death in the brain, and edaravone, a free radical scavenger, significantly reduced the number of dead cells. These results suggest that the activation of NMDA receptors and the production of reactive oxygen species induce neuronal cell damage in accordance with previous mammalian reports. We demonstrate the suitability of an ischemic stroke model in zebrafish larvae using the oxygen absorber, enabling a high throughput drug screening.
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Affiliation(s)
- Mami Matsumoto
- Department of Pharmacology, Graduate School of Pharmaceutical Science, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Moeri Miyamoto
- Department of Pharmacology, Graduate School of Pharmaceutical Science, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Masahito Sawahata
- Department of Pharmacology, Graduate School of Pharmaceutical Science, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Yuki Takada-Takatori
- Faculty of Pharmaceutical Science, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Science, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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7
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Taguchi K, Izumi Y, Takada-Takatori Y, Akaike A, Kume T. Protective Effect of 2',3'-Dihydroxy-4',6'-dimethoxychalcone on Glutamate-Induced Neurotoxicity in Primary Cortical Cultures. Biol Pharm Bull 2020; 43:184-187. [PMID: 31902924 DOI: 10.1248/bpb.b19-00718] [Citation(s) in RCA: 2] [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] [Indexed: 11/22/2022]
Abstract
We have previously isolated 2',3'-dihydroxy-4',6'-dimethoxychalcone (DDC) from green perilla leaves as the activator of the nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway. This study aims to evaluate the effects of DDC against glutamate neurotoxicity using rat primary cortical cultures. Treatment of cultures with DDC for 24 h before glutamate exposure significantly inhibited glutamate neurotoxicity in a concentration-dependent manner. The involvement of hemeoxygenase-1 (HO-1) and reduced glutathione (GSH) in the protective effects of DDC on cortical cultures was also evaluated. While an HO-1 inhibitor did not have a significant effect on DDC-induced neuroprotection, a γ-glutamylcystein synthetase (γ-GCS) inhibitor significantly suppressed the protective effect of DDC. In an astrocyte culture, DDC induced a marked increase in the levels of intracellular reduced GSH. These results suggest that DDC mainly activates the Nrf2-ARE pathway of astrocytes, resulting in the increased extracellular release of reduced GSH, protecting neurons from glutamate neurotoxicity.
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Affiliation(s)
- Kazuya Taguchi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University.,Laboratory of Pharmacology, Kobe Pharmaceutical University
| | - Yuki Takada-Takatori
- Department of Rational Medicinal Science, Faculty of Pharmaceutical Sciences, Doshisha Women's College
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University.,Wakayama Medical University
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University.,Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama
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8
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Inose Y, Izumi Y, Takada-Takatori Y, Akaike A, Koyama Y, Kaneko S, Kume T. Protective effects of Nrf2-ARE activator on dopaminergic neuronal loss in Parkinson disease model mice: Possible involvement of heme oxygenase-1. Neurosci Lett 2020; 736:135268. [PMID: 32712353 DOI: 10.1016/j.neulet.2020.135268] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 05/04/2020] [Revised: 07/09/2020] [Accepted: 07/20/2020] [Indexed: 12/21/2022]
Abstract
Parkinson disease (PD) is a neurodegenerative disorder characterized by a selective loss of dopaminergic neurons in the substantia nigra, and oxidative stress is thought to contribute to this pathogenesis. The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway, which induces the production of antioxidant enzymes, is thereby a potential target for therapeutics to reduce neurodegeneration in PD. Previously, we identified TPNA10168 from a chemical library as an activator of the Nrf2-ARE pathway, and the present study examined the effects of TPNA10168 on an in vivo PD model. Subcutaneous administration of TPNA10168 was associated with inhibited dopaminergic neuronal loss and behavioral impairment in 6-hydroxydopamine-induced PD model mice. Heme oxygenase-1 (HO-1) is an antioxidant enzyme expressed downstream of the Nrf2-ARE signaling pathway, and we observed that HO-1 protein levels were upregulated by TPNA10168 in the mouse brain. These results suggest that TPNA10168 inhibits dopaminergic neuronal death in PD model mice, and that upregulation of HO-1 might participate in this effect.
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Affiliation(s)
- Yuri Inose
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Laboratory of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Yuki Takada-Takatori
- Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Wakayama Medical University, Japan
| | - Yutaka Koyama
- Laboratory of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Shuji Kaneko
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan.
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9
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Kanki T, Kuwabara T, Morinaga J, Fukami H, Umemoto S, Fujimoto D, Mizumoto T, Hayata M, Kakizoe Y, Izumi Y, Tajiri S, Tajiri T, Kitamura K, Mukoyama M. SUN-181 HIGH SERUM CALPROTECTIN LEVELS MAY PREDICT MORTALITY RISK IN HEMODIALYSIS PATIENTS WITH HIGH-PHOSPHATE CONDITIONS. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.714] [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: 11/26/2022] Open
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10
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NISHIGUCHI Y, Kuwabara T, Fujimoto D, Kanki T, Hata Y, Yokoi H, Izumi Y, Kakizoe Y, Mochizuki N, Mukoyama M. SUN-004 Osteocrin, a bone-originated humoral factor, exerts a renoprotective role in ischemia-reperfusion injury in mice. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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11
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Horita R, Mahara K, Izumi Y, Terada M, Kishiki K, Takanashi S. P1363 Risk factors of severe tricuspid regurgitation after left-sided valve surgery. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Tricuspid regurgitation (TR) sometimes deteriorate late after left-sided valve surgery. The recent guidelines recommend tricuspid valve repair at the same time as the left-sided valve surgery. However, little is known about the pathophysiology that leads to severe TR after left-sided valve surgery.
Purpose
To clarify the risk factors of the patients with severe TR after left-sided valve surgery.
Methods
We retrospectively investigated consecutive 526 patients diagnosed as severe TR from January 2004 to December 2018 at our hospital. Clinical background, echocardiographic parameters were evaluated. Demographic information and clinical data (including age, electrocardiograms, type of left-sided valve surgery, underlying valve diseases and history of pacemaker or ICD implantation) were obtained by chart review.
Results
Of the 526 patients with severe TR, 107 patients were after a left-sided valve surgery. Patients developed severe TR at a mean of 14.8 ± 8 years after surgery.The surgical indications were as follows: mitral valve stenosis (74 patients, 69%), mitral valve regurgitation (43 patients, 40%), aortic valve stenosis (37 patients, 35%) and aortic regurgitation (28 patients, 26%), respectively. The mean age at diagnosis of severe TR was 74 ± 10 years and 75 were female (70%). Among those patients, 32 patients (30%) had a tricuspid annuloplasty (TAP) with the first left-sided valve surgery. Ninety-five patients (88%) had atrial fibrillation (AF), 75 patients (70%) were diagnosed as rheumatic heart disease, 64 patients (60%) had pulmonary artery hypertension (PH) and 28 patients (26%) had a permanent pacemaker or ICD implantation.
There were only 12 patients who had severe TR without AF. Eight of 12 patients without AF had PH, and permanent pacemakers were implanted in remaining 4 patients.
Conclusions
Almost all patients with severe TR after left-sided valve surgery present with AF and prevalence of rheumatic heart disease were about 70 percent. These two factors may be one of the important risk factors for severe TR after left-sided valve surgery.
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Affiliation(s)
- R Horita
- Sakakibara heart Institute, Cardiology, Tokyo, Japan
| | - K Mahara
- Sakakibara heart Institute, Cardiology, Tokyo, Japan
| | - Y Izumi
- Sakakibara heart Institute, Cardiology, Tokyo, Japan
| | - M Terada
- Sakakibara heart Institute, Cardiology, Tokyo, Japan
| | - K Kishiki
- Sakakibara heart Institute, Pediatric Cardiology, Tokyo, Japan
| | - S Takanashi
- Sakakibara heart Institute, Cardiovascular Surgery, Tokyo, Japan
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12
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Yamamoto K, Izumi Y, Arifuku M, Kume T, Sawada H. α-Synuclein oligomers mediate the aberrant form of spike-induced calcium release from IP 3 receptor. Sci Rep 2019; 9:15977. [PMID: 31685859 PMCID: PMC6828767 DOI: 10.1038/s41598-019-52135-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 10/12/2019] [Indexed: 01/10/2023] Open
Abstract
Emerging evidence implicates α-synuclein oligomers as potential culprits in the pathogenesis of Lewy body disease (LBD). Soluble oligomeric α-synuclein accumulation in cytoplasm is believed to modify neuronal activities and intraneural Ca2+ dynamics, which augment the metabolic burden in central neurons vulnerable to LBD, although this hypothesis remains to be fully tested. We evaluated how intracellular α-synuclein oligomers affect the neuronal excitabilities and Ca2+ dynamics of pyramidal neurons in neocortical slices from mice. Intracellular application of α-synuclein containing stable higher-order oligomers (αSNo) significantly reduced spike frequency during current injection, elongated the duration of spike afterhyperpolarization (AHP), and enlarged AHP current charge in comparison with that of α-synuclein without higher-order oligomers. This αSNo-mediated alteration was triggered by spike-induced Ca2+ release from inositol trisphosphate receptors (IP3R) functionally coupled with L-type Ca2+ channels and SK-type K+ channels. Further electrophysiological and immunochemical observations revealed that α-synuclein oligomers greater than 100 kDa were directly associated with calcium-binding protein 1, which is responsible for regulating IP3R gating. They also block Ca2+-dependent inactivation of IP3R, and trigger Ca2+-induced Ca2+ release from IP3R during multiple spikes. This aberrant machinery may result in intraneural Ca2+ dyshomeostasis and may be the molecular basis for the vulnerability of neurons in LBD brains.
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Affiliation(s)
- Kenji Yamamoto
- Department of Neurology and Clinical Research Center, National Hospital Organization Utano National Hospital, Kyoto, Japan.
| | - Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan.,Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Monami Arifuku
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan.,Department of Applied Pharmacology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Hideyuki Sawada
- Department of Neurology and Clinical Research Center, National Hospital Organization Utano National Hospital, Kyoto, Japan
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13
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Takada-Takatori Y, Tomii Y, Takemasa S, Takeda Y, Izumi Y, Akaike A, Tsuchida K, Kume T. Protective Effects of 2′,3′-Dihydroxy-4′,6′-dimethoxychalcone Derived from Green Perilla Leaves against UV Radiation-Induced Cell Injury in Human Cultured Keratinocytes. Biol Pharm Bull 2019; 42:1936-1941. [DOI: 10.1248/bpb.b19-00618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Yuri Tomii
- Faculty of Pharmaceutical Sciences, Doshisha Women's College
| | - Shota Takemasa
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Yuka Takeda
- Faculty of Pharmaceutical Sciences, Doshisha Women's College
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Laboratory of Pharmacology, Kobe Pharmaceutical University
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Department of Pharmacology, Graduate School of Medicine, Wakayama Medical University
| | | | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama
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14
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Iwasaki M, Izuo N, Izumi Y, Takada-Takatori Y, Akaike A, Kume T. Protective Effect of Green Perilla-Derived Chalcone Derivative DDC on Amyloid β Protein-Induced Neurotoxicity in Primary Cortical Neurons. Biol Pharm Bull 2019; 42:1942-1946. [DOI: 10.1248/bpb.b19-00657] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mami Iwasaki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Naotaka Izuo
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Laboratory of Pharmacology, Kobe Pharmaceutical University
| | - Yuki Takada-Takatori
- Department of Rational Medicinal Science, Faculty of Pharmaceutical Sciences, Doshisha Women’s College
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Wakayama Medical University
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University
- Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama
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15
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Takada-Takatori Y, Takeda Y, Imai R, Izumi Y, Akaike A, Tsuchida K, Kume T. Effects of 2'-3'-dihydroxy-4',6'-dimethoxychalcone derived from green perilla on auricle thickness in chronic contact dermatitis model mice. J Pharmacol Sci 2019; 141:17-24. [PMID: 31540843 DOI: 10.1016/j.jphs.2019.08.004] [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: 07/16/2019] [Revised: 08/08/2019] [Accepted: 08/14/2019] [Indexed: 10/26/2022] Open
Abstract
Oxidative stress has been implicated in the pathogenesis of allergic contact dermatitis. The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway, an in vivo antioxidant system, induces antioxidant enzymes. In our previous studies, we isolated 2',3'-dihydroxy-4',6'-dimethoxychalcone (DDC) from green perilla and identified it as a novel activator of the Nrf2-ARE pathway. We also discovered that it exerted cytoprotective effects against oxidative stress in PC12 cells. However, its effects on skin disease model animals in vivo remain unclear. In the present study, auricular thickness time-dependently increased with the repeated application of picryl chloride, and significant increases were observed from Day 2 in chronic contact hypersensitivity (cCHS) model mice. Histological changes, such as higher numbers of cells in the epidermis, were observed with increases in auricular thickness. The administration of DDC every two days from Day 6 suppressed the increases in auricular thickness and the number of scratching events in a dose-dependent manner. The expression levels of antioxidant enzymes increased in the mouse auricle 24 h after the administration of DDC. These results presume that DDC inhibits increases in auricular thickness in cCHS mice by up-regulating the expression of antioxidative enzymes through the activation of the Nrf2-ARE pathway.
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Affiliation(s)
- Yuki Takada-Takatori
- Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan.
| | - Yuka Takeda
- Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan
| | - Risa Imai
- Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-Shimo-Adachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Laboratory of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-Shimo-Adachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Establishment of School of Pharmaceutical Sciences, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-8509, Japan
| | - Katsuharu Tsuchida
- Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kodo, Kyotanabe-shi, Kyoto, 610-0395, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Yoshida-Shimo-Adachi-cho, Sakyo-ku, Kyoto, 606-8501, Japan; Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
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Nakagawa S, Izumi Y, Takada-Takatori Y, Akaike A, Kume T. Increased CCL6 expression in astrocytes and neuronal protection from neuron-astrocyte interactions. Biochem Biophys Res Commun 2019; 519:777-782. [PMID: 31551151 DOI: 10.1016/j.bbrc.2019.09.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 09/09/2019] [Indexed: 12/13/2022]
Abstract
Astrocytes have been reported to exhibit neuroprotective action via various chemokines. Reports of the chemokine CCL6 in central nervous system cells show expression in cultured microglia, but many unexplained effects on neurons and astrocytes remain. In this study, cultured cerebral cortical neurons, astrocytes, and a mixed culture system were constructed, and expression levels of CCL6 and its effects on glutamate neurotoxicity were examined. When neuron cultures and neuron-astrocyte mixed cultures were treated with glutamate, neuronal cell death was observed in both, but was induced by lower concentrations of glutamate in monocultured neurons. In addition, pretreatment of neuron cultures with conditioned media from neuron-astrocyte mixed cultures inhibited glutamate neurotoxicity. CCL6 expression was not observed in fluorescence activated cell sorting analyses of neuron and astrocyte cultures, but was observed in astrocytes from cocultures of neurons and astrocytes. Higher CCL6 concentrations were found in media from cocultures of neurons and astrocytes than in culture media from neuron cultures. Pretreatment of neuron cell cultures with CCL6 for 24 h also protected against glutamate neurotoxicity. This protective effect was suppressed by an antagonist of the chemokine receptor CCR1. Furthermore, glutamate neurotoxicity in mixed neuron and astrocyte cultures was enhanced by pretreatments with the CCR1 antagonist. Finally, cotreatments with the phosphatidylinositol-3 kinase (PI3K) inhibitor and CCL6 abolished the neuroprotective effects of CCL6. These data suggest that astrocytes protect neurons by activating CCR1 in neurons. Moreover, this neuroprotective action of astrocyte CCL6 is mediated by CCR1, and downstream by PI3K.
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Affiliation(s)
- Shota Nakagawa
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Hyogo, 658-8558, Japan
| | - Yuki Takada-Takatori
- Department of Rational Medicinal Science, Faculty of Pharmaceutical Sciences, Doshisha Women's College, Kyoto, 610-0395, Japan
| | | | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan; Department of Applied Pharmacology, Graduate School of Medical and Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
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FUJIMOTO D, Kuwabara T, Hata Y, Umemoto S, Kanki T, Nishiguchi Y, Hayata M, Izumi Y, Kakizoe Y, Mukoyama M. SUN-297 INTRAGLOMERULAR CROSSTALK BETWEEN MESANGIAL CELLS AND PODOCYTES INHIBITS NORMAL ER-ASSOCIATED DEGRADATION PROCESSES AND INDUCES PODOCYTE INJURY IN DIABETIC KIDNEY DISEASE. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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18
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Izumi Y. [Establishment of a novel evaluation system for dopaminergic axonal outgrowth and its regulatory factor]. Nihon Yakurigaku Zasshi 2018; 152:240-245. [PMID: 30393256 DOI: 10.1254/fpj.152.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The nigrostriatal dopaminergic pathway is implicated with Parkinson's disease. Elucidation of this projection mechanism is not only important for considering developmental brain formation, but also contributes to the development of a therapy for regenerating the lost neural circuit. Although several axon guidance cues have been reported to induce dopaminergic axons from the substantia nigra to the striatum, the mechanisms by which the dopaminergic axons extend in the striatum remain unclear. An excellent culture system is necessary for studying the formation process of a neural circuit. Therefore, we tried to establish an in vitro model for the quantitative analysis of dopaminergic innervation of striatal neurons using primary dissociated cells. Mesencephalic cells prepared from rat embryos were seeded on the opposite side to striatal cells with the isolation wall in between. When the isolation wall was removed, the dopaminergic axons extended toward the striatal cell region and formed synapses with striatal neurons. The dopaminergic innervation of striatal neurons was suppressed by inhibiting integrin α5β1 expressed on dopaminergic neurons. Furthermore, dopaminergic neurons overexpressing integrin α5 exhibited a longer neurite outgrowth on striatal cells than normal dopaminergic neurons did. Because this evaluation system using dissociated cell culture has relatively high throughput and is easy to be pharmacologically and genetically manipulated, it is considered to be a useful tool in the study of neural circuit formation. In addition, as a result, we found integrin α5β1 as a molecule promoting striatal innervation by dopaminergic neuron, which is expected to contribute to regeneration of the nigrostriatal dopaminergic projection.
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Affiliation(s)
- Yasuhiko Izumi
- Laboratory of Pharmacology, Kobe Pharmaceutical University
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19
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Shiomi M, Takeda H, Irino Y, Yamada S, Kuniyoshi N, Ying Y, Koike T, Izumi Y, Shinohara M, Bamba T, Ishida T. Development of markers for progression of coronary plaques using WHHLMI rabbits, an animal model of familial hypercholesterolemia. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Hayashi T, Matsumoto S, Hosokawa A, Yamamoto K, Nomura A, Woo E, Imano H, Kato R, Ijiri Y, Yamaguchi T, Izumi Y, Yoshiyama M, Okada Y, Asahi M. P2501Rivaroxaban combined with spironolactone attenuates cardiovascular remodeling due to hypoxia in pulmonary arterial hypertension. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Hayashi
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - S Matsumoto
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - A Hosokawa
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - K Yamamoto
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - A Nomura
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - E Woo
- Osaka Medical College, Takatsuki, Japan
| | - H Imano
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - R Kato
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | - Y Ijiri
- Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | | | - Y Izumi
- Osaka City University, Osaka, Japan
| | | | - Y Okada
- Osaka Medical College, Takatsuki, Japan
| | - M Asahi
- Osaka Medical College, Takatsuki, Japan
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21
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Morozumi T, Yashima A, Gomi K, Ujiie Y, Izumi Y, Akizuki T, Mizutani K, Takamatsu H, Minabe M, Miyauchi S, Yoshino T, Tanaka M, Tanaka Y, Hokari T, Yoshie H. Increased systemic levels of inflammatory mediators following one-stage full-mouth scaling and root planing. J Periodontal Res 2018; 53:536-544. [DOI: 10.1111/jre.12543] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2018] [Indexed: 12/29/2022]
Affiliation(s)
- T. Morozumi
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - A. Yashima
- Department of Periodontology; School of Dental Medicine; Tsurumi University; Yokohama Japan
| | - K. Gomi
- Department of Periodontology; School of Dental Medicine; Tsurumi University; Yokohama Japan
| | - Y. Ujiie
- Department of Periodontology; School of Dental Medicine; Tsurumi University; Yokohama Japan
| | - Y. Izumi
- Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - T. Akizuki
- Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - K. Mizutani
- Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - H. Takamatsu
- Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
| | - M. Minabe
- Bunkyo-Dori Dental Clinic; Chiba Japan
- Division of Periodontology; Department of Oral Interdisciplinary Medicine; School of Dentistry; Kanagawa Dental University; Yokosuka Japan
| | | | - T. Yoshino
- Seikeikai Hospital; Seikeikai Group; Yokohama Japan
| | - M. Tanaka
- Seikeikai Hospital; Seikeikai Group; Yokohama Japan
| | - Y. Tanaka
- Seikeikai Hospital; Seikeikai Group; Yokohama Japan
| | - T. Hokari
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - H. Yoshie
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
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22
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Matsui N, Nodera H, Kuzume D, Iwasa N, Unai Y, Sakai W, Miyazaki Y, Yamazaki H, Osaki Y, Mori A, Furukawa T, Tsukamoto-Miyashiro A, Shimatani Y, Yamasaki M, Izumi Y, Kusunoki S, Arisawa K, Kaji R. Guillain−Barré syndrome in a local area in Japan, 2006-2015: an epidemiological and clinical study of 108 patients. Eur J Neurol 2018; 25:718-724. [DOI: 10.1111/ene.13569] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 01/08/2018] [Indexed: 11/30/2022]
Affiliation(s)
- N. Matsui
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - H. Nodera
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - D. Kuzume
- Department of Neurology; Chikamori Hospital; Kochi Japan
| | - N. Iwasa
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - Y. Unai
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - W. Sakai
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - Y. Miyazaki
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - H. Yamazaki
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - Y. Osaki
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - A. Mori
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - T. Furukawa
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - A. Tsukamoto-Miyashiro
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - Y. Shimatani
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - M. Yamasaki
- Department of Neurology; Chikamori Hospital; Kochi Japan
| | - Y. Izumi
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
| | - S. Kusunoki
- Department of Neurology; Kindai University; Faculty of Medicine; Osaka Japan
| | - K. Arisawa
- Department of Preventive Medicine; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
| | - R. Kaji
- Department of Clinical Neuroscience; Graduate School of Biomedical Sciences; Tokushima University; Tokushima Japan
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23
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Izumi Y. [Anti-inflammatory action of the transcription factor Nrf2]. Nihon Yakurigaku Zasshi 2018; 152:209. [PMID: 30298844 DOI: 10.1254/fpj.152.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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24
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Izumi Y. [Neuroregeneration by in vivo direct reprogramming]. Nihon Yakurigaku Zasshi 2018; 152:51. [PMID: 29998953 DOI: 10.1254/fpj.152.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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25
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Aoyama N, Suzuki J, Kobayashi N, Hanatani T, Ashigaki N, Yoshida A, Shiheido Y, Sato H, Minabe M, Izumi Y, Isobe M. Associations among tooth loss, systemic inflammation and antibody titers to periodontal pathogens in Japanese patients with cardiovascular disease. J Periodontal Res 2017; 53:117-122. [DOI: 10.1111/jre.12494] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2017] [Indexed: 11/29/2022]
Affiliation(s)
- N. Aoyama
- Division of Periodontology Department of Oral Interdisciplinary Medicine Graduate School of Dentistry Kanagawa Dental University Yokosuka Japan
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - J.‐I. Suzuki
- Department of Advanced Clinical Science and Therapeutics The University of Tokyo Tokyo Japan
- Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo Japan
| | - N. Kobayashi
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - T. Hanatani
- Division of Periodontology Kyushu Dental University Kitakyushu Fukuoka Japan
| | - N. Ashigaki
- Department of Oral Microbiology Tsurumi University Yokohama Japan
| | - A. Yoshida
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - Y. Shiheido
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - H. Sato
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - M. Minabe
- Division of Periodontology Department of Oral Interdisciplinary Medicine Graduate School of Dentistry Kanagawa Dental University Yokosuka Japan
| | - Y. Izumi
- Department of Periodontology Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
| | - M. Isobe
- Department of Cardiovascular Medicine Tokyo Medical and Dental University Tokyo Japan
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Izumi Y, Kataoka H, Inose Y, Akaike A, Koyama Y, Kume T. Neuroprotective effect of an Nrf2-ARE activator identified from a chemical library on dopaminergic neurons. Eur J Pharmacol 2017; 818:470-479. [PMID: 29154837 DOI: 10.1016/j.ejphar.2017.11.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 07/27/2017] [Revised: 11/13/2017] [Accepted: 11/13/2017] [Indexed: 12/21/2022]
Abstract
The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway, which induces the production of antioxidant enzymes, is a possible therapeutic target for treating diseases related to oxidative stress. Nrf2 activators often exhibit cytotoxicity due to nonspecific electrophilic reactions with thiol groups. We screened a chemical library to explore Nrf2 activators with a wide safety margin. In at least in vitro experiments, TPNA10168, identified from the library, showed a higher efficacy in Nrf2 activation and a lower cytotoxicity than sulforaphane, a well-known Nrf2 activator. The present study demonstrated the protective effect of TPNA10168 against 6-hydroxydopamine-induced cytotoxicity. In PC12 cells, NAD(P)H:quinone oxidoreductase 1 was upregulated by TPNA10168 and participated in the protective effect. In primary mesencephalic cultures, heme oxygenase-1, upregulated by TPNA10168 in astrocytes, provided protection of dopaminergic neurons via a guanylate cyclase/protein kinase G signaling pathway via carbon monoxide. These results suggest that the compound identified from the chemical library may be suitable as a neuroprotective agent with the ability to induce antioxidant enzymes.
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Affiliation(s)
- Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan; Department of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Harue Kataoka
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yuri Inose
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yutaka Koyama
- Department of Pharmacology, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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Kakizaki S, Aoki A, Tsubokawa M, Lin T, Mizutani K, Koshy G, Sadr A, Oda S, Sumi Y, Izumi Y. Observation and determination of periodontal tissue profile using optical coherence tomography. J Periodontal Res 2017; 53:188-199. [PMID: 29063599 DOI: 10.1111/jre.12506] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Diagnosis is a crucial step in periodontal treatment. The aim of this study was to evaluate the effectiveness of optical coherence tomography (OCT) for observation and determination of periodontal tissue profiles in vivo. MATERIAL AND METHODS In experiment 1, refractive indices of purified water, porcine gingiva and human gingiva at 1330 nm were determined for the analysis of OCT images of periodontal tissues. In experiment 2, OCT examination was performed in the midlabial apico-coronal plane of mandibular anteriors in 30 Asian volunteers with healthy gingiva. Sulcus depth was measured on intra-oral photographs taken during probing. In the OCT images, the gingival, epithelial and connective tissue thickness, and the position of alveolar bone crest were determined and finally, the biologic width was measured. RESULTS Refractive indices of purified water, porcine gingiva and human gingiva were 1.335, 1.393 and 1.397, respectively. Cross-sectional images of gingival epithelium, connective tissue and alveolar bone were depicted in real-time. The sulcular and junctional epithelium could be visualized occasionally. Laser penetration and reflection were limited to a certain depth with an approximate maximal imaging depth capability of 1.5 mm and OCT images of the periodontal structure were not clear in some cases. The average maximal thickness of gingiva and epithelium and biologic width at the mandibular anteriors were 1.06 ± 0.21, 0.49 ± 0.15 and 2.09 ± 0.60 mm, respectively. CONCLUSION OCT has promise for non-invasive observation of the periodontal tissue profile in detail and measurement of internal periodontal structures including biologic width in the anterior region.
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Affiliation(s)
- S Kakizaki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - A Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - M Tsubokawa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - T Lin
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,School of Dentistry, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - K Mizutani
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - G Koshy
- Department of Periodontics, Sri Sankara Dental College, Varkala, Kerala, India
| | - A Sadr
- Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle, WA, USA
| | - S Oda
- Oral Diagnosis and General Dentistry, University Hospital of Dentistry, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Sumi
- Center of Advanced Medicine for Dental and Oral Diseases National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Y Izumi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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28
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Izumi Y, Kondo N, Takahashi R, Akaike A, Kume T. Reduction of Immunoreactivity Against the C-Terminal Region of the Intracellular α-Synuclein by Exogenous α-Synuclein Aggregates: Possibility of Conformational Changes. J Parkinsons Dis 2017; 6:569-79. [PMID: 27314756 DOI: 10.3233/jpd-160835] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The formation of intracellular aggregates containing α-synuclein (α-syn) is a main pathological feature of Parkinson disease. The propagation of α-syn aggregation via cell-to-cell transmission has been implicated in the progression of Parkinson disease. OBJECTIVE Our aim is to clarify the molecular mechanisms underlying the formation of intracellular aggregation by extracellular α-syn. METHODS We investigated the effects of exogenous α-syn aggregates on intracellular α-syn immunoreactivity in α-syn-overexpressing SH-SY5Y cells using two antibodies to distinct epitopes of α-syn. To obtain α-syn aggregates, α-syn solution was aged with continuous agitation. RESULTS Immunoreactivity against the acidic C-terminal domain of the intracellular α-syn was reduced by exposure to agedα-syn, whereas that against the hydrophobic non-amyloid component region was not changed. The reduction in immunoreactivity was not suppressed by protease inhibitors but was mimicked by neutralization of the negative charges on the C-terminal of the intracellular α-syn induced by spermine or extracellular acidification. CONCLUSIONS These results suggest that the reduction in immunoreactivity is attributed not to proteolytic cleavage but to a conformational change at the C-terminus of the intracellular α-syn. The conformational change at the C-terminus of the intracellular α-syn might be involved in an initial step of fibril formation by exogenous α-syn aggregates.
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Affiliation(s)
- Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Naoto Kondo
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Graduate School of Medicine, Kyoto University, Shogoin, Sakyo-ku, Kyoto, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan.,Department of Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan
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Takamatsu N, Nodera H, Mori A, Yamazaki H, Izumi Y, Kaji R. Angle-dependent alteration of muscle echo-densities to effectively diagnose myopathic conditions. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Atsuta N, Yokoi D, Nakamura R, Watanabe H, Hayashi N, Ito M, Watanabe H, Katsuno M, Izumi Y, Morita M, Taniguchi A, Oda M, Abe K, Mizoguchi K, Kano O, Kuwabara S, Aoki M, Hattori N, Kaji R, Sobue G. Prognosis of japanese patients with amyotrophic lateral sclerosis according to motor phenotype. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.330] [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: 11/27/2022]
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31
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Izumi Y, Takata T, Miyamoto R, Kawarai T, Saito Y, Murayama S, Kaji R. An autopsied case with novel mutated hereditary diffuse leukoencephalopathy with spheroid (HDLS). J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Haji S, Miyamoto R, Izumi Y, Kaji R, Kuga J, Matsubara T, Yamshita H. Acute exacerbation of type II alexander disease after traumatic brain injury. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2127] [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: 11/26/2022]
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33
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Oki R, Kawarai T, Morigaki R, Oka N, Murakami N, Izumi Y, Goto S, Kaji R. Neuropathological investigation of transgenic mice overexpressing hTFG harboring HMSN-P mutation. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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34
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Mori A, Nodera H, Takamatsu N, Hashiguchi S, Izumi Y, Kaji R. Characteristic involvement of muscle ultrasound in myotonic dystrophy type 1. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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35
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Hanada K, Matsui N, Nodera H, Kuzume D, Sato K, Iwasa N, Unai Y, Sakai W, Miyazaki Y, Yamazaki H, Osaki Y, Furukawa T, Yamasaki M, Izumi Y, Kusunoki S, Arisawa K, Kaji R. Guillain-Barré syndrome in a local area in Japan, 2006-2015: An epidemiological and clinical study of 108 patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Kawarai T, Montecchiani C, Miyamoto R, Gaudiello F, Miele M, Izumi Y, Kaji R, Orlacchio A. Spastic paraplegia type 4: A novel SPAST splice site donor mutation and expansion of the phenotype variability. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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Yamazaki H, Takamatsu N, Nodera H, Kawarai T, Izumi Y, Kaji R. Distinguishing features of amyloid polyneuropathy on nerve ultrasound. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Ishihara T, Toyoda S, Koyama A, Tada M, Atsuta N, Nakamura R, Tohnai G, Sone J, Izumi Y, Kaji R, Morita M, Taniguchi A, Kakita A, Sobue G, Nishizawa M, Onodera O. The SMN gene copy number states in Japanese ALS patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.604] [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: 11/30/2022]
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39
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Nodera H, Takamatsu N, Sogawa K, Izumi Y, Kaji R. Muscle ultrasound to differentiate myopathic conditions: Utililty of texture analysis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.404] [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: 11/24/2022]
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40
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Morino H, Ohsawa R, Miyamoto R, Izumi Y, Maruyama H, Kawakami H. Identification rate of hereditary neurodegenerative disease by next-generation sequencing. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Kawahata I, Lai Y, Morita J, Kato S, Ohtaku S, Tomioka Y, Tabuchi A, Tsuda M, Sumi-Ichinose C, Kondo K, Izumi Y, Kume T, Akaike A, Ohashi K, Mizuno K, Hasegawa K, Ichinose H, Kobayashi K, Yamakuni T. V-1/CP complex formation is required for genetic co-regulation of adult nigrostriatal dopaminergic function via the RHO/MAL/SRF pathway in vitro and in vivo. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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Kawarai T, Miyamoito R, Mure H, Morigaki R, Oki R, Orlacchio A, Koichihara R, Nakagawa E, Sakamoto T, Izumi Y, Goto S, Kaji R. Mutations of KMT2B cause involuntary movements with intellectual disability. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1022] [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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43
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Yokoi D, Atsuta N, Hirakawa A, Nakamura R, Watanabe H, Hayashi N, Ito M, Watanabe H, Katsuno M, Izumi Y, Morita M, Taniguchi A, Oda M, Abe K, Mizoguchi K, Kano O, Kuwabara S, Kaji R, Sobue G. The effect of noninvasive positive pressure ventilation in amyotrophic lateral sclerosis patients from a Japanese multicenter prospective cohort. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Osaki Y, Nodera H, Yamazaki H, Unai Y, Takamatsu N, Izumi Y, Kaji R. Ulnar nerve demyelination within the forearm segment in diabetic patients. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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45
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Nakamura R, Atsuta N, Tohnai G, Yokoi D, Watanabe H, Hayashi N, Sone J, Ito M, Watanabe H, Katsuno M, Izumi Y, Hashimoto R, Aiba I, Mizoguchi K, Kaji R, Sobue G. Clinical characteristics of familial and sporadic amyotrophic lateral sclerosis patients with G93S mutation in the SOD1 gene. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Shimada M, Imano H, Fujiwara A, Hashimoto T, Kato R, Ijiri Y, Izumi Y, Yoshiyama M, Hayashi T. P5147Direct factor Xa inhibition prevents cardiac remodeling induced by intermittent hypoxia through PAR-1/2 dual signaling pathway. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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47
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Sudo T, Okada Y, Ozaki K, Urayama K, Kanai M, Kobayashi H, Gokyu M, Izumi Y, Tanaka T. Association of NOD2 Mutations with Aggressive Periodontitis. J Dent Res 2017; 96:1100-1105. [PMID: 28682159 DOI: 10.1177/0022034517715432] [Citation(s) in RCA: 14] [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] [Indexed: 12/12/2022] Open
Abstract
Aggressive periodontitis (AgP) is characterized by rapid alveolar bone destruction and tooth loss early in life, and its etiology remains unclear. To explore the genetic risk factors of AgP, we performed genome-wide single-nucleotide polymorphism genotyping for identity-by-descent mapping and identified 32 distinct candidate loci, followed by whole exome sequencing with 2 pedigrees of AgP consisting of 3 cases and 1 control in 1 family and 2 sibling cases in the other. After variant filtering procedures and validation by targeted Sanger sequencing, we identified 2 missense mutations at 16q12 in NOD2 (p.Ala110Thr and p.Arg311Trp), which encodes nucleotide-binding oligomerization domain protein 2. We further examined 94 genetically unrelated AgP patients by targeted sequencing of NOD2 and found that 2 patients among them also carried the p.Arg311Trp variant. Furthermore, we found 3 additional missense mutations in this gene (p.His370Tyr, p.Arg459Cys, and p.Ala868Thr). These mutations either had not been previously observed or are extremely rare (frequency <0.001) in Asian populations. NOD2 plays a crucial role in innate immunity as an intracellular receptor initiating nuclear factor κB-dependent and mitogen-activated protein kinase-dependent gene transcription. These results demonstrated NOD2 as a novel gene involved in AgP.
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Affiliation(s)
- T Sudo
- 1 Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,2 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Okada
- 1 Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,3 Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka University, Osaka, Japan
| | - K Ozaki
- 4 Laboratory for Medical Genome Sciences, Medical Genome Center, National Center for Geriatrics and Gerontology, Obu, Japan.,5 Laboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - K Urayama
- 1 Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,6 Center for Clinical Epidemiology, St. Luke's International University, Tokyo, Japan
| | - M Kanai
- 1 Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - H Kobayashi
- 2 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - M Gokyu
- 2 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Y Izumi
- 2 Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - T Tanaka
- 1 Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.,7 Bioresource Research Center, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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48
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Okuda M, Fujita Y, Hijikuro I, Wada M, Uemura T, Kobayashi Y, Waku T, Tanaka N, Nishimoto T, Izumi Y, Kume T, Akaike A, Takahashi T, Sugimoto H. PE859, A Novel Curcumin Derivative, Inhibits Amyloid-β and Tau Aggregation, and Ameliorates Cognitive Dysfunction in Senescence-Accelerated Mouse Prone 8. J Alzheimers Dis 2017; 59:313-328. [DOI: 10.3233/jad-161017] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Michiaki Okuda
- Graduate School of Brain Science, Doshisha University, Kizugawa, Kyoto, Japan
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
- Pharma Eight Co., Ltd., Kyoto, Japan
| | - Yuki Fujita
- Graduate School of Brain Science, Doshisha University, Kizugawa, Kyoto, Japan
- Pharma Eight Co., Ltd., Kyoto, Japan
| | | | - Mei Wada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Takuya Uemura
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Yukako Kobayashi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Tomonori Waku
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Naoki Tanaka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | | | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
- Laboratory of Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Nagoya, Japan
| | - Takashi Takahashi
- Natural Product Chemistry & Pharmaceutical Research Center, Yokohama College of Pharmacy, Yokohama, Japan
| | - Hachiro Sugimoto
- Graduate School of Brain Science, Doshisha University, Kizugawa, Kyoto, Japan
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49
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Thanakun S, Pornprasertsuk-Damrongsri S, Izumi Y. Increased oral inflammation, leukocytes, and leptin, and lower adiponectin in overweight or obesity. Oral Dis 2017; 23:956-965. [DOI: 10.1111/odi.12679] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 02/19/2017] [Accepted: 04/05/2017] [Indexed: 12/15/2022]
Affiliation(s)
- S Thanakun
- Department of Oral Medicine and Periodontology; Faculty of Dentistry; Mahidol University; Bangkok Thailand
| | | | - Y Izumi
- Department of Periodontology; Graduate School of Medical and Dental Sciences; Tokyo Medical and Dental University; Tokyo Japan
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50
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Makitani K, Nakagawa S, Izumi Y, Akaike A, Kume T. Inhibitory effect of donepezil on bradykinin-induced increase in the intracellular calcium concentration in cultured cortical astrocytes. J Pharmacol Sci 2017; 134:37-44. [PMID: 28499726 DOI: 10.1016/j.jphs.2017.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 02/20/2017] [Revised: 03/06/2017] [Accepted: 03/21/2017] [Indexed: 01/07/2023] Open
Abstract
Donepezil is a potent and selective acetylcholinesterase inhibitor developed for the treatment of Alzheimer's disease. In the present study, we investigated the responses of astrocytes to bradykinin, an inflammatory mediator, and the effect of donepezil on these responses using cultured cortical astrocytes. Bradykinin induced a transient increase of intracellular calcium concentration ([Ca2+]i) in cultured astrocytes. Bradykinin-induced [Ca2+]i increase was inhibited by the exposure to thapsigargin, which depletes Ca2+ stores on endoplasmic reticulum, but not by the exclusion of extracellular Ca2+. Twenty four hours pretreatment of donepezil reduced the bradykinin-induced [Ca2+]i increase. This reduction was inhibited not only by mecamylamine, a nAChR antagonist, but also by PI3K and Akt inhibitors. In addition, donepezil inhibited bradykinin-induced increase of the intracellular reactive oxygen species level in astrocytes. These results suggest that donepezil inhibits the inflammatory response induced by bradykinin via nAChR and PI3K-Akt pathway in astrocytes.
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Affiliation(s)
- Kouki Makitani
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shota Nakagawa
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yasuhiko Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akinori Akaike
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan; Department of Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Toshiaki Kume
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29 Shimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan.
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