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Champiat S, Boyer M, Paz-Ares L, Schoenfeld A, Izumi H, Govindan R, Carlisle J, Borghaei H, Johnson M, Steeghs N, Vokes E, Dowlati A, Zhang Y, Pati A, Ju CH, Mukherjee S, Chen X, Hashemi Sadraei N, Hummel HD. 147P Characterizing CRS in phase I study of DLL3-targeted T cell engager tarlatamab in small cell lung cancer. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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2
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Izumi H, Sakamoto T, Uchibori K, Nishino K, Sakakibara-Konishi J, Nomura S, Ryohei K, Udagawa H, Shibata Y, Ikeda T, Niho S, Sakai T, Zenke Y, Nosaki K, Matsumoto S, Yoh K, Goto K. 997P Phase I study of brigatinib plus panitumumab in patients with advanced EGFR-mutated non-small cell lung cancer resistant to osimertinib (BEBOP): Early termination due to severe early onset pneumonitis by brigatinib. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1123] [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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3
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Okahisa M, Udagawa H, Matsumoto S, Kato T, Oizumi S, Furuya N, Hayakawa D, Toyozawa R, Nishiyama A, Ohashi K, Miyamoto S, Nishino K, Oi H, Sakai T, Shibata Y, Izumi H, Sugiyama E, Nosaki K, Zenke Y, Yoh K, Goto K. EP08.02-113 Clinico-genomic Characteristics of Patients with Non-small Cell Lung Cancer Harboring EGFR Exon 20 Insertion Mutations. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.796] [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: 10/14/2022]
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4
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Borghaei H, Paz-Ares L, Johnson M, Champiat S, Owonikoko T, Lai V, Boyer M, Hummel HD, Govindan R, Steeghs N, Blackhall F, Reguart N, Dowlati A, Zhang Y, Sadraei NH, Goldrick A, Izumi H. OA12.05 Phase 1 Updated Exploration and First Expansion Data for DLL3-targeted T-cell Engager Tarlatamab in Small Cell Lung Cancer. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.062] [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: 10/14/2022]
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Degawa T, Kawahata I, Izumi H, Shinoda Y, Fukunaga K. T-type Ca 2+ channel enhancer SAK3 administration improves the BPSD-like behaviors in App NL-G-F/NL-G-F knock-in mice. J Pharmacol Sci 2021; 146:1-9. [PMID: 33858649 DOI: 10.1016/j.jphs.2021.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/18/2020] [Revised: 02/13/2021] [Accepted: 02/22/2021] [Indexed: 11/24/2022] Open
Abstract
Alzheimer's disease (AD) accounts for the majority of dementia among the elderly. In addition to cognitive impairment, behavioral and psychological symptoms (BPSD) such as depression tendency and increased aggression impose a great burden on the patient. However, there is still no rational therapeutic drug for BPSD. Recently, we developed a novel AD therapeutic candidate, SAK3, and demonstrated that it improved cognitive dysfunction in AppNL-G-F/NL-G-F knock-in (NL-G-F) mice. In this study, we investigated whether acute SAK3 administration improved BPSD in addition to cognitive improvement. Acute SAK3 administration improved BPSD, including anxiolytic and depressive-like behaviors, and ameliorated aggressive behaviors. Furthermore, continuous SAK3 administration improved anxiolytic and depressive-like behaviors. Intriguingly, the anti-anxiolytic and cognitive improvement lasted two weeks after the withdrawal of SAK3, whereas the anti-depressive action did not. Taken together, SAK3 had comprehensive beneficial effects on BPSD behavior.
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Affiliation(s)
- Tomohide Degawa
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Ichiro Kawahata
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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6
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Paz-Ares L, Owonikoko T, Johnson M, Govindan R, Izumi H, Lai V, Borghaei H, Boyer M, Boosman R, Hummel HD, Blackhall F, Dowlati A, Zhang Y, Mukherjee S, Sable B, Pati A, Shetty A, Sadraei NH, Champiat S. 48MO Phase I study of AMG 757, a delta-like ligand 3 (DLL3) targeting, half-life extended bispecific T-cell engager immuno-oncology therapy, in small cell lung cancer (SCLC). J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01890-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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7
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Eda M, Yamasaki T, Izumi H, Tomita N, Konno S, Konno M, Murakami H, Sato F. Cryptic species in a Vulnerable seabird: shorttailed albatross consists of two species. ENDANGER SPECIES RES 2020. [DOI: 10.3354/esr01078] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The occurrence of cryptic species within a threatened taxon is rare, but where they do occur, understanding species boundaries is essential for planning an effective conservation strategy. The short-tailed albatross Phoebastria albatrus is a Vulnerable seabird that mainly breeds on Torishima and the Senkaku Islands in the western North Pacific. Although it has been tacitly regarded as a single management unit with 2 breeding sites, the species is known to comprise 2 genetically separated populations (Senkaku-type and Torishima-type). However, morphological examination of birds from both populations has not been conducted owing to the difficulty in accessing the Senkaku Islands. In this study, we examined the morphological differences between immigrants from the Senkaku Islands to Torishima (Senkaku-type) and native birds on Torishima (Torishima-type) and found significant differences in morphological characteristics between the 2 bird types. In general, Torishima-type birds were larger than Senkaku-type birds, whereas Senkaku-type birds had relatively longer beaks. Based on the morphological differences found in this study as well as genetic and ecological differences revealed in previous studies, we believe that Senkaku- and Torishima-type birds should be classified as different cryptic species. To the best of our knowledge, this is the first case of cryptic species being identified in a threatened avian species.
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Affiliation(s)
- M Eda
- Hokkaido University Museum, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - T Yamasaki
- Division of Natural History, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - H Izumi
- Hokkaido University Museum, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - N Tomita
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - S Konno
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - M Konno
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - H Murakami
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
| | - F Sato
- Division of Avian Conservation, Yamashina Institute for Ornithology, Konoyama 115, Abiko 270-1145, Japan
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8
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Yabuki Y, Liu J, Kawahata I, Izumi H, Shinoda Y, Koga K, Ueno S, Shioda N, Fukunaga K. Anti-Epileptic Effects of FABP3 Ligand MF1 through the Benzodiazepine Recognition Site of the GABA A Receptor. Int J Mol Sci 2020; 21:ijms21155525. [PMID: 32752296 PMCID: PMC7432285 DOI: 10.3390/ijms21155525] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 11/16/2022] Open
Abstract
Recently, we developed the fatty acid-binding protein 3 (FABP3) ligand MF1 (4-(2-(1-(2-chlorophenyl)-5-phenyl-1H-pyrazol-3-yl)phenoxy) butanoic acid) as a therapeutic candidate for α-synucleinopathies. MF1 shows affinity towards γ-aminobutyric acid type-A (GABAA) receptor, but its effect on the receptor remains unclear. Here, we investigate the pharmacological properties of MF1 on the GABAA receptor overexpressed in Neuro2A cells. While MF1 (1–100 μm) alone failed to evoke GABA currents, MF1 (1 μm) promoted GABA currents during GABA exposure (1 and 10 μm). MF1-promoted GABA currents were blocked by flumazenil (10 μm) treatment, suggesting that MF1 enhances receptor function via the benzodiazepine recognition site. Acute and chronic administration of MF1 (0.1, 0.3 and 1.0 mg/kg, p.o.) significantly attenuated status epilepticus (SE) and the mortality rate in pilocarpine (PILO: 300 mg/kg, i.p.)-treated mice, similar to diazepam (DZP: 5.0 mg/kg, i.p.). The anti-epileptic effects of DZP (5.0 mg/kg, i.p.) and MF1 (0.3 mg/kg, p.o.) were completely abolished by flumazenil (25 mg/kg, i.p.) treatment. Pentylenetetrazol (PTZ: 90 mg/kg, i.p.)-induced seizures in mice were suppressed by DZP (5.0 mg/kg, i.p.), but not MF1. Collectively, this suggests that MF1 is a mild enhancer of the GABAA receptor and exercises anti-epileptic effects through the receptor’s benzodiazepine recognition site in PILO-induced SE models.
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Affiliation(s)
- Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-0811, Japan;
| | - Jiaqi Liu
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
| | - Ichiro Kawahata
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
| | - Kohei Koga
- Department of Neurophysiology, Hyogo College of Medicine, Nishinomiya 663-8501, Japan;
- Department of Neurophysiology, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8216, Japan;
| | - Shinya Ueno
- Department of Neurophysiology, Graduate School of Medicine, Hirosaki University, Hirosaki 036-8216, Japan;
| | - Norifumi Shioda
- Department of Genomic Neurology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-0811, Japan;
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan; (Y.Y.); (J.L.); (I.K.); (H.I.); (Y.S.)
- Correspondence: ; Tel.: +81-22-795-6836; Fax: 81-22-795-6835
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Haga H, Yamada R, Izumi H, Shinoda Y, Kawahata I, Miyachi H, Fukunaga K. Novel fatty acid-binding protein 3 ligand inhibits dopaminergic neuronal death and improves motor and cognitive impairments in Parkinson's disease model mice. Pharmacol Biochem Behav 2020; 191:172891. [PMID: 32126223 DOI: 10.1016/j.pbb.2020.172891] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 02/22/2020] [Accepted: 02/28/2020] [Indexed: 11/19/2022]
Abstract
The main symptom of Parkinson's disease (PD) is motor dysfunction and remarkably approximately 30-40% of PD patients exhibit cognitive impairments. Recently, we have developed MF8, a heart-type fatty acid-binding protein (FABP3)-specific ligand, which can inhibit α-synuclein (α-syn) oligomerization induced by arachidonic acid in FABP3 overexpressing neuro2A cells. The present study aimed to determine whether MF8 attenuates dopaminergic neuronal death and motor and cognitive impairments in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced PD mice model. MF8 can penetrate the blood-brain barrier and its peak brain concentration (21.5 ± 2.1 nM) was achieved 6 h after the oral administration (1.0 mg/kg). We also compared its effects and pharmacological action with those of L-DOPA (3,4-dihydroxy-l-phenylalanine). PD model mice were developed by administering MPTP (25 mg/kg, i.p.) once a day for five consecutive days. Twenty-four hours after the final MPTP injection, mice were administered MF8 (0.3, 1.0 mg/kg, p.o.) or L-DOPA (25 mg/kg, i.p.) once a day for 28 consecutive days and subjected to behavioral and histochemical studies. MF8 (1.0 mg/kg, p.o.), but not L-DOPA, inhibited the dopaminergic neuronal death in the ventral tegmental area and the substantia nigra pars compacta region of the MPTP-treated mice. MF8 also improved both, motor and cognitive functions, while L-DOPA ameliorated only motor dysfunction. Taken together, our results showed that MF8 attenuated the MPTP-induced dopaminergic neuronal death associated with PD pathology. We present MF8 as a novel disease-modifying therapeutic molecule for PD, which acts via a mechanism different from that of L-DOPA.
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Affiliation(s)
- Hidaka Haga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Ryo Yamada
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Ichiro Kawahata
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Hiroyuki Miyachi
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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10
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Nakazaki E, Yabuki Y, Izumi H, Shinoda Y, Watanabe F, Hishida Y, Kamimura A, Fukunaga K. Combined citicoline and docosahexaenoic acid treatment improves cognitive dysfunction following transient brain ischemia. J Pharmacol Sci 2019; 139:319-324. [PMID: 30871872 DOI: 10.1016/j.jphs.2019.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 02/08/2019] [Accepted: 02/12/2019] [Indexed: 01/01/2023] Open
Abstract
Phospholipids are structural components of cellular membranes that play important roles as precursors for various signaling pathways in modulating neuronal membrane function and maintenance of the intracellular environment. Phosphatidylcholine (PtdCho) is the most abundant cellular phospholipid. Citicoline and docosahexaenoic acid (DHA) are essential intermediates in the synthesis of PtdCho. Both PtdCho intermediates have independently shown neuroprotective effects in cerebral ischemia, but their combined effect is unknown. This study aimed to investigate the combined effect of oral citicoline and DHA treatment on improvement of cognitive deficits following cerebral ischemia using a 20-min bilateral common carotid artery occlusion (BCCAO) mouse model. BCCAO ischemic mice were treated for a total of 11 days with a combination of citicoline (40 mg/kg body weight/day) and DHA (300 mg/kg body weight/day) or each alone. Combined citicoline and DHA synergistically and significantly improved learning and memory ability of ischemic mice compared with either alone. Further, citicoline and DHA treatment significantly prevented neuronal cell death, and slightly increased DHA-containing PtdCho in the hippocampus, albeit not significantly. Taken together, these findings suggest that combined citicoline and DHA treatment may have synergistic benefits for partially improving memory deficits following transient brain ischemia.
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Affiliation(s)
- Eri Nakazaki
- Research & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, 305-0841, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8678, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8678, Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8678, Japan
| | - Fumiko Watanabe
- Research & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, 305-0841, Japan
| | - Yukihiro Hishida
- Research & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, 305-0841, Japan
| | - Ayako Kamimura
- Research & Innovation Center, Kyowa Hakko Bio Co., Ltd., Tsukuba, Ibaraki, 305-0841, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8678, Japan.
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11
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Fukunaga K, Izumi H, Yabuki Y, Shinoda Y, Shioda N, Han F. Alzheimer's disease therapeutic candidate SAK3 is an enhancer of T-type calcium channels. J Pharmacol Sci 2019; 139:51-58. [DOI: 10.1016/j.jphs.2018.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 11/16/2018] [Accepted: 11/20/2018] [Indexed: 12/27/2022] Open
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12
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Ishigaki T, Asanuma T, Yagi N, Izumi H, Shimizu S, Fujisawa Y, Miyahira Y, Kushima R, Masuda K, Nakatani S. 2231Improvement in diagnostic accuracy of single-vessel coronary stenosis by the analysis of post-systolic shortening derived from non-stress speckle tracking echocardiography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.2231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Ishigaki
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - T Asanuma
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
| | - N Yagi
- Shiga University of Medical Science, Department of Cardiovascular Medicine, Otsu, Japan
| | - H Izumi
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - S Shimizu
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - Y Fujisawa
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - Y Miyahira
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - R Kushima
- Shiga University of Medical Science, Department of Clinical Laboratory Medicine, Otsu, Japan
| | - K Masuda
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
| | - S Nakatani
- Osaka University Graduate School of Medicine, Department of Health Sciences, Division of Functional Diagnostics, Suita, Japan
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Fukunaga K, Izumi H, Shinoda Y, Yabuki Y, Saito T, Saido TC. P2‐050: DECREASE IN AMYLOID PLAQUE FORMATION BY DISEASE‐MODIFYING DRUG SAK3 IN APP KNOCK‐IN MICE. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Kohji Fukunaga
- Tohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
| | - Hisanao Izumi
- Tohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
| | - Yasuharu Shinoda
- Tohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
| | - Yasushi Yabuki
- Tohoku University Graduate School of Pharmaceutical SciencesSendaiJapan
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14
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Sun M, Izumi H, Shinoda Y, Fukunaga K. Neuroprotective effects of protein tyrosine phosphatase 1B inhibitor on cerebral ischemia/reperfusion in mice. Brain Res 2018; 1694:1-12. [PMID: 29705606 DOI: 10.1016/j.brainres.2018.04.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 01/24/2018] [Revised: 04/10/2018] [Accepted: 04/24/2018] [Indexed: 12/11/2022]
Abstract
Akt (Protein kinase B, PKB), a serine/threonine kinase, plays a critical role in cell development, growth, and survival. Akt phosphorylation mediates a neuroprotective effect against ischemic injury. Recently, a protein-tyrosine phosphatase-1B (PTP1B) inhibitor (KY-226) was developed to elicit anti-diabetic and anti-obesity effects via enhancement of insulin signaling. Previously, we reported that the nonselective PTP1B inhibitor, sodium orthovanadate, rescued neurons from delayed neuronal death during brain ischemia. In this study, we confirmed the ameliorative effects of KY-226 on ischemia/reperfusion (I/R) injury using a murine model of middle cerebral artery occlusion (MCAO). ICR mice were subjected to MCAO for 2 h followed by reperfusion. Although KY-226 permeability was poor through the blood-brain barrier (BBB) of normal mice, it could penetrate through the BBB of mice after I/R insult. Intraperitoneal KY-226 administration elicited dose-dependent reductions in infarcted brain areas and improved neurological deficits. The neuroprotective effects of KY-266 were obtained when administered within 0.5 h after reperfusion. KY-226 (10 mg/kg) also restored reduced Akt phosphorylation and eNOS phosphorylation (Ser-1177) levels following I/R insult. Moreover, 10 mg/kg of KY-226 improved I/R-induced decreased extracellular signal-regulated kinase (ERK) phosphorylation. Furthermore, KY-226 attenuated the generation of reactive oxygen species (ROS) in mouse cortex. These results suggest that KY-226 may act as a novel therapeutic candidate for ischemic stroke. Activation of Akt and ERK possibly underlie the neuroprotective mechanism of KY-226.
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Affiliation(s)
- Meiling Sun
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai Japan.
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15
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Izumi H, Shinoda Y, Saito T, Saido TC, Sato K, Yabuki Y, Matsumoto Y, Kanemitsu Y, Tomioka Y, Abolhassani N, Nakabeppu Y, Fukunaga K. The Disease-modifying Drug Candidate, SAK3 Improves Cognitive Impairment and Inhibits Amyloid beta Deposition in App Knock-in Mice. Neuroscience 2018; 377:87-97. [PMID: 29510211 DOI: 10.1016/j.neuroscience.2018.02.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 01/08/2018] [Revised: 02/10/2018] [Accepted: 02/25/2018] [Indexed: 01/08/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease and the most common form of elderly dementia in the world. At present, acetylcholine inhibitors, such as donepezil, galantamine and rivastigmine, are used for AD therapy, but the therapeutic efficacy is limited. We recently proposed T-type voltage-gated Ca2+ channels' (T-VGCCs) enhancer as a new therapeutic candidate for AD. In the current study, we confirmed the pharmacokinetics of SAK3 in the plasma and brain of mice using ultra performance liquid chromatography-tandem mass spectrometry. We also investigated the effects of SAK3 on the major symptoms of AD, such as cognitive dysfunction and amyloid beta (Aβ) accumulation, in AppNL-F knock-in (NL-F) mice, which have been established as an AD model. Chronic SAK3 (0.5 mg/kg/day) oral administration for 3 months from 9 months of age improved cognitive function and inhibited Aβ deposition in 12-month-old NL-F mice. Using microarray and real-time PCR analysis, we discovered serum- and glucocorticoid-induced protein kinase 1 (SGK1) as one of possible genes involved in the inhibition of Aβ deposition and improvement of cognitive function by SAK3. These results support the idea that T-VGCC enhancer, SAK3 could be a novel candidate for disease-modifying therapeutics for AD.
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Affiliation(s)
- Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Takashi Saito
- Laboratory for Proteolytic Neuroscience, Brain Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, Japan
| | - Takaomi C Saido
- Laboratory for Proteolytic Neuroscience, Brain Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, Japan
| | - Keita Sato
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Yotaro Matsumoto
- Laboratory of Oncology, Pharmacy Practice and Sciences, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Yoshitomi Kanemitsu
- Laboratory of Oncology, Pharmacy Practice and Sciences, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Yoshihisa Tomioka
- Laboratory of Oncology, Pharmacy Practice and Sciences, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Nona Abolhassani
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Yusaku Nakabeppu
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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16
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Lai YC, Ushio N, Rahman MM, Katanoda Y, Ogihara K, Naya Y, Moriyama A, Iwanaga T, Saitoh Y, Sogawa T, Sunaga T, Momoi Y, Izumi H, Miyoshi N, Endo Y, Fujiki M, Kawaguchi H, Miura N. Aberrant expression of microRNAs and the miR-1/MET pathway in canine hepatocellular carcinoma. Vet Comp Oncol 2018; 16:288-296. [DOI: 10.1111/vco.12379] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 11/16/2017] [Accepted: 11/30/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Y.-C. Lai
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - N. Ushio
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - M. M. Rahman
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
- The United Graduate School of Veterinary Science; Yamaguchi University; Yamaguchi Japan
| | - Y. Katanoda
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - K. Ogihara
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - Y. Naya
- Laboratory of Pathology, School of Life and Environmental Science; Azabu University; Sagamihara Japan
| | - A. Moriyama
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - T. Iwanaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Saitoh
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sogawa
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - T. Sunaga
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Momoi
- Laboratory of Veterinary Diagnostic Imaging, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Izumi
- Drug Safety Research Laboratories; Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima Japan
| | - N. Miyoshi
- Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - Y. Endo
- Laboratory of Small Animal Internal Medicine, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - M. Fujiki
- Laboratory of Veterinary Surgery, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
| | - H. Kawaguchi
- Department of Hygiene and Health Promotion Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - N. Miura
- Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine; Kagoshima University; Kagoshima Japan
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17
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Sakamoto T, Yamane K, Tanaka N, Yanai M, Izumi H, Yamaguchi K, Takeda K, Makino H, Igishi T, Yamasaki A, Simizu E. P2.03-016 Clinical Utility of Liquid Biopsy for Detecting EGFR T790M Mutation Is Very Limited. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1267] [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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18
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Moriguchi S, Kita S, Yabuki Y, Inagaki R, Izumi H, Sasaki Y, Tagashira H, Horie K, Takeda J, Iwamoto T, Fukunaga K. Reduced CaM Kinase II and CaM Kinase IV Activities Underlie Cognitive Deficits in NCKX2 Heterozygous Mice. Mol Neurobiol 2017; 55:3889-3900. [PMID: 28547530 DOI: 10.1007/s12035-017-0596-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 01/24/2017] [Accepted: 05/02/2017] [Indexed: 11/24/2022]
Abstract
Among five members of the K+-dependent Na+/Ca2+ exchanger (NCKX) family (NCKX1-5), only NCKX2 is highly expressed in mouse brain. NCKX2 in plasma membranes mediates cytosolic calcium excretion through electrogenic exchange of 4 Na+ for 1 Ca2+ and 1 K+. Here, we observed significantly decreased levels of NCKX2 protein and mRNA in the CA1 region of APP23 mice, a model of Alzheimer's disease. We also found that, like APP23 mice, heterozygous NCKX2-mutant mice exhibit mildly impaired hippocampal LTP and memory acquisition, the latter based on novel object recognition and passive avoidance tasks. When we addressed underlying mechanisms, we found that both CaMKII autophosphorylation and CaMKIV phosphorylation significantly decreased in CA1 regions of NCKX2+/- relative to control mice. Likewise, phosphorylation of GluA1 (Ser-831) and CREB (Ser-133), respective downstream targets of CaMKII and CaMKIV, also significantly decreased in the CA1 region. BDNF protein and mRNA levels significantly decreased in CA1 of NCKX2+/- relative to control mice. Finally, CaN activity increased in CA1 of NCKX2+/- mice. Our findings suggest that like APP23 mice, NCKX2+/- mice may exhibit impaired learning and hippocampal LTP due to decreased CaM kinase II and CaM kinase IV activities.
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Affiliation(s)
- Shigeki Moriguchi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Satomi Kita
- Department of Pharmacology, Faculty of Medicine, Fukuoka University, 7-45-1, Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan.,Department of Pharmacology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Ryo Inagaki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Yuzuru Sasaki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Hideaki Tagashira
- Department of Pharmacology, Faculty of Medicine, Fukuoka University, 7-45-1, Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan
| | - Kyoji Horie
- Department of Physiology II, Nara Medical University, Nara, Japan
| | - Junji Takeda
- Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Takahiro Iwamoto
- Department of Pharmacology, Faculty of Medicine, Fukuoka University, 7-45-1, Nanakuma, Jonan-ku, Fukuoka, Fukuoka, 814-0180, Japan.
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan.
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19
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Yabuki Y, Matsuo K, Izumi H, Haga H, Yoshida T, Wakamori M, Kakei A, Sakimura K, Fukuda T, Fukunaga K. Pharmacological properties of SAK3, a novel T-type voltage-gated Ca 2+ channel enhancer. Neuropharmacology 2017; 117:1-13. [PMID: 28093211 DOI: 10.1016/j.neuropharm.2017.01.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 07/16/2016] [Revised: 12/27/2016] [Accepted: 01/12/2017] [Indexed: 11/30/2022]
Abstract
T-type voltage-gated Ca2+ channels (T-VGCCs) function in the pathophysiology of epilepsy, pain and sleep. However, their role in cognitive function remains unclear. We previously reported that the cognitive enhancer ST101, which stimulates T-VGCCs in rat cortical slices, was a potential Alzheimer's disease therapeutic. Here, we introduce a more potent T-VGCC enhancer, SAK3 (ethyl 8'-methyl-2',4-dioxo-2-(piperidin-1-yl)-2'H-spiro[cyclopentane-1,3'-imidazo [1,2-a]pyridin]-2-ene-3-carboxylate), and characterize its pharmacological properties in brain. Based on whole cell patch-clamp analysis, SAK3 (0.01-10 nM) significantly enhanced Cav3.1 currents in neuro2A cells ectopically expressing Cav3.1. SAK3 (0.1-10 nM nM) also enhanced Cav3.3 but not Cav3.2 currents in the transfected cells. Notably, Cav3.1 and Cav3.3 T-VGCCs were localized in cholinergic neurve systems in hippocampus and in the medial septum. Indeed, acute oral administration of SAK3 (0.5 mg/kg, p.o.), but not ST101 (0.5 mg/kg, p.o.) significantly enhanced acetylcholine (ACh) release in the hippocampal CA1 region of naïve mice. Moreover, acute SAK3 (0.5 mg/kg, p.o.) administration significantly enhanced hippocampal ACh levels in olfactory-bulbectomized (OBX) mice, rescuing impaired memory-related behaviors. Treatment of OBX mice with the T-VGCC-specific blocker NNC 55-0396 (12.5 mg/kg, i.p.) antagonized both enhanced ACh release and memory improvements elicited by SAK3 administration. We also observed that SAK3-induced ACh releases were significantly blocked in the hippocampus from Cav3.1 knockout (KO) mice. These findings suggest overall that T-VGCCs play a key role in cognition by enhancing hippocampal ACh release and that the cognitive enhancer SAK3 could be a candidate therapeutic in Alzheimer's disease.
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Affiliation(s)
- Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Kazuya Matsuo
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Hidaka Haga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Takashi Yoshida
- Department of Oral Biology, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Minoru Wakamori
- Department of Oral Biology, Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Akikazu Kakei
- Department of Chemistry and Material Engineering, Faculty of Engineering, Shinshu University, Nagano, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Takaichi Fukuda
- Department of Anatomy and Neurobiology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan.
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20
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Deguchi T, Sato F, Eda M, Izumi H, Suzuki H, Suryan RM, Lance EW, Hasegawa H, Ozaki K. Translocation and hand-rearing result in short-tailed albatrosses returning to breed in the Ogasawara Islands 80 years after extirpation. Anim Conserv 2016. [DOI: 10.1111/acv.12322] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- T. Deguchi
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
| | - F. Sato
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
| | - M. Eda
- Hokkaido University Museum; Hokkaido University; Sapporo Japan
| | - H. Izumi
- Hokkaido University Museum; Hokkaido University; Sapporo Japan
| | - H. Suzuki
- Institute of Boninology; Ogasawara Japan
| | - R. M. Suryan
- Department of Fisheries and Wildlife; Hatfield Marine Science Center; Oregon State University; Newport OR USA
| | - E. W. Lance
- Endangered Species Branch; Anchorage Fish and Wildlife Field Office; Anchorage AK USA
| | - H. Hasegawa
- Department of Biology; Toho University; Funabashi Japan
| | - K. Ozaki
- Division of Avian Conservation; Yamashina Institute for Ornithology; Abiko Japan
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21
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Fukunaga K, Shinoda Y, Izumi H, Yabuki Y. P4‐014: SAK3, an T‐Type Ca
2+
Channel Stimulator Inhibits Amyloid Beta Accumulation. Alzheimers Dement 2016. [DOI: 10.1016/j.jalz.2016.06.2103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-114 Non-Hodgkin's lymphoma that diagnosed from gastrointestinal biopsy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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23
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Natori K, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-113 Multiple neoplasms including hematological malignancies and esophageal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.107] [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: 11/13/2022] Open
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24
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Arai K, Kuraishi Y, Izumi H. P-198 Multiple neoplasms consist of gastric cancer and hematological malignancy. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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25
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Izumi H, Sasaki Y, Yabuki Y, Shinoda Y, Fujita N, Yomoda S, Fukunaga K. Memory Improvement by Yokukansankachimpihange and Atractylenolide III in the Olfactory Bulbectomized Mice. ACTA ACUST UNITED AC 2016. [DOI: 10.4236/aad.2016.52003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Moriguchi S, Sakagami H, Yabuki Y, Sasaki Y, Izumi H, Zhang C, Han F, Fukunaga K. Stimulation of Sigma-1 Receptor Ameliorates Depressive-like Behaviors in CaMKIV Null Mice. Mol Neurobiol 2015; 52:1210-1222. [PMID: 25316382 DOI: 10.1007/s12035-014-8923-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [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: 08/04/2014] [Accepted: 10/06/2014] [Indexed: 01/22/2023]
Abstract
Sigma-1 receptor (Sig-1R) is a molecular chaperone regulating calcium efflux from the neuronal endoplasmic reticulum to the mitochondria. Calcium/calmodulin-dependent protein kinase IV (CaMKIV) null mice exhibit depressive-like behaviors and impaired neurogenesis as assessed by bromodeoxyuridine (BrdU) incorporation into newborn cells of the hippocampal dentate gyrus (DG). Here, we demonstrate that chronic stimulation of Sig-1R by treatment with the agonist SA4503 or the SSRI fluvoxamine for 14 days improves depressive-like behaviors in CaMKIV null mice. By contrast, treatment with paroxetine, which lacks affinity for Sig-1R, did not alter these behaviors. Reduced numbers of BrdU-positive cells and decreased brain-derived neurotrophic factor (BDNF) mRNA expression and protein kinase B (Akt; Ser-473) phosphorylation seen in the DG of CaMKIV null mice were significantly rescued by chronic Sig-1R stimulation. Interestingly, reduced ATP production observed in the DG of CaMKIV null mice was improved by chronic Sig-1R stimulation. Such stimulation also improved hippocampal long-term potentiation (LTP) induction and maintenance, which are impaired in the DG of CaMKIV null mice. LTP rescue was closely associated with both increases in calcium/calmodulin-dependent protein kinase II (CaMKII) autophosphorylation and GluA1 (Ser-831) phosphorylation. Taken together, Sig-1R stimulation by SA4503 or fluvoxamine treatment increased hippocampal neurogenesis, which is closely associated with amelioration of depressive-like behaviors in CaMKIV null mice.
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Affiliation(s)
- Shigeki Moriguchi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan.
| | - Hiroyuki Sakagami
- Department of Anatomy, Kitasato University School of Medicine, Sagamihara, Japan
| | - Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Yuzuru Sasaki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Chen Zhang
- Department of Pharmacy, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Feng Han
- Department of Pharmacy, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai, Miyagi, 980-8578, Japan.
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27
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Yabuki Y, Shinoda Y, Izumi H, Ikuno T, Shioda N, Fukunaga K. Dehydroepiandrosterone administration improves memory deficits following transient brain ischemia through sigma-1 receptor stimulation. Brain Res 2015; 1622:102-13. [PMID: 26119915 DOI: 10.1016/j.brainres.2015.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 03/03/2015] [Revised: 05/02/2015] [Accepted: 05/05/2015] [Indexed: 12/20/2022]
Abstract
Dehydroepiandrosterone (DHEA) is the most abundant neurosteroid synthesized de novo in the central nervous system. Oral DHEA administration elicits neuroprotection and cognitive improvement, but mechanisms underlying these functions in cerebral ischemia have remained unclear. Since DHEA is the endogenous ligand for the sigma-1 receptor (σ1R), we determined whether oral DHEA administration prevents neuronal cell death and improves cognition via σ1R stimulation in brain ischemia using a 20-min bilateral common carotid artery occlusion (BCCAO) mouse model. Twenty-four hours after BCCAO ischemia, mice were administered DHEA (15 or 30mg/kg p.o.) daily for 11 consecutive days. Memory deficits following brain ischemia were improved by DHEA administration dose-dependently. Accordingly, DHEA administration significantly prevented neuronal cell death in the hippocampal CA1 region in BCCAO mice. Interestingly, DHEA administration rescued decreases in Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) autophosphorylation and phosphorylation of extracellular signal-regulated kinase (ERK) and protein kinase B (Akt) in the CA1 region. Moreover, DHEA administration significantly ameliorated decreases in adenosine 5'-triphosphate (ATP) levels and decreased σ1R expression levels in CA1 following BCCAO ischemia. Finally, co-treatment of mice with the σ1R antagonist NE-100 (1mg/kg, p.o.) blocked DHEA effects on memory improvement and neuroprotection in ischemic mice. Taken together, DHEA prevents neuronal cell death and activates CaMKII via σ1R stimulation, thereby improving cognitive deficits following brain ischemia.
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Affiliation(s)
- Yasushi Yabuki
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan
| | - Yasuharu Shinoda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan
| | - Hisanao Izumi
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan
| | - Tatuya Ikuno
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan
| | - Norifumi Shioda
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan
| | - Kohji Fukunaga
- Department of Pharmacology, Graduate School of Pharmaceutical Sciences, Tohoku University, Aramaki-Aoba Aoba-ku, Sendai 980-8578, Japan.
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28
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Satoh T, Izumi H, Iwabuchi N, Odamaki T, Namba K, Abe F, Xiao JZ. Bifidobacterium breve prevents necrotising enterocolitis by suppressing inflammatory responses in a preterm rat model. Benef Microbes 2015; 7:75-82. [PMID: 26420070 DOI: 10.3920/bm2015.0035] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Necrotising enterocolitis (NEC) is associated with inflammatory responses and barrier dysfunction in the gut. In this study, we investigated the effect of Bifidobacterium breve M-16V on factors related to NEC development using an experimental rat model. Caesarean-sectioned rats were given formula milk with or without B. breve M-16V by oral gavage thrice daily, and experimental NEC was induced by exposing the rats to hypoxic conditions. Naturally delivered rats that were reared by their mother were used as healthy controls. The pathological score of NEC and the expression of molecules related to inflammatory responses and the barrier function were assessed in the ileum. B. breve M-16V reduced the pathological scores of NEC and resulted in some improvement in survivability. B. breve M-16V suppressed the increased expression of molecules related to inflammation and barrier function that resulted from NEC induction. B. breve M-16V normalised Toll-like receptor (TRL)4 expression and enhanced TLR2 expression. Our data suggest that B. breve M-16V prevents NEC development by modulating TLR expressions and suppressing inflammatory responses in a rat model.
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Affiliation(s)
- T Satoh
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - H Izumi
- 2 Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - N Iwabuchi
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - T Odamaki
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - K Namba
- 2 Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - F Abe
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
| | - J Z Xiao
- 1 Food Science and Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, Zama-City, 2528583 Kanagawa, Japan
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29
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Kazuhiko N, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-021: Hyponatremia in non-Hodgkin's lymphoma diffuse large B cell type of the elderly. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30124-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Kazuhiko N, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-020: Syndrome of inappropriate secretion of antidiuretic hormone during induction therapy for lymphoma. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30123-6] [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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Kazuhiko N, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Izumi H. P-019: Malignant lymphoma more than 80 years old cases. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30122-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kato M, Kuraishi Y, Arai K, Izumi H. P-126 The cases that were diagnosed malignant lymphoma from gastrointestinal tract of biopsy. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.126] [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: 11/14/2022] Open
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Natori K, Nagase D, Ishihara S, Mitsui Y, Sakai A, Kato M, Kuraishi Y, Arai K, Izumi H. P-125 Study of multiple neoplasms consist of hematological malignancies and gastrointestinal cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.125] [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: 11/13/2022] Open
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Natori K, Ishihara S, Nagase D, Mitsui Y, Sakai A, Kuraishi Y, Kato M, Arai K, Izumi H. P-251 Diagnosis of malignant lymphoma during at the colorectal cancer surgery. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.248] [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: 11/13/2022] Open
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Miyazawa K, Izumi H, Watanabe-Nakayama T, Asakawa H, Fukuma T. Fabrication of electron beam deposited tip for atomic-scale atomic force microscopy in liquid. Nanotechnology 2015; 26:105707. [PMID: 25697199 DOI: 10.1088/0957-4484/26/10/105707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, possibilities of improving operation speed and force sensitivity in atomic-scale atomic force microscopy (AFM) in liquid using a small cantilever with an electron beam deposited (EBD) tip have been intensively explored. However, the structure and properties of an EBD tip suitable for such an application have not been well-understood and hence its fabrication process has not been established. In this study, we perform atomic-scale AFM measurements with a small cantilever and clarify two major problems: contaminations from a cantilever and tip surface, and insufficient mechanical strength of an EBD tip having a high aspect ratio. To solve these problems, here we propose a fabrication process of an EBD tip, where we attach a 2 μm silica bead at the cantilever end and fabricate a 500-700 nm EBD tip on the bead. The bead height ensures sufficient cantilever-sample distance and enables to suppress long-range interaction between them even with a short EBD tip having high mechanical strength. After the tip fabrication, we coat the whole cantilever and tip surface with Si (30 nm) to prevent the generation of contamination. We perform atomic-scale AFM imaging and hydration force measurements at a mica-water interface using the fabricated tip and demonstrate its applicability to such an atomic-scale application. With a repeated use of the proposed process, we can reuse a small cantilever for atomic-scale measurements for several times. Therefore, the proposed method solves the two major problems and enables the practical use of a small cantilever in atomic-scale studies on various solid-liquid interfacial phenomena.
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Affiliation(s)
- K Miyazawa
- Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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Wu Y, Wang KY, Li Z, Liu YP, Izumi H, Yamada S, Uramoto H, Nakayama Y, Ito K, Kohno K. Y-box binding protein 1 expression in gastric cancer subtypes and association with cancer neovasculature. Clin Transl Oncol 2014; 17:152-9. [DOI: 10.1007/s12094-014-1208-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 07/15/2014] [Indexed: 12/18/2022]
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Kodani M, Igishi T, Sakamoto T, Touge H, Izumi H, Ito S, Kurai J, Yamaguchi K, Nakamoto M, Shimizu E. Rechallenge with EGFR-TKI after a Drug Holiday, Retrospective Study in Single Institution. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.60] [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: 11/14/2022] Open
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Therapy in malignant lymphoma in 80 years or over. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.026] [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: 10/26/2022]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Multiple neoplasms including hematological malignancies in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.324] [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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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Study of malignant lymphoma diagnosed by biopsy from head and neck area in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Leukemia in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.323] [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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Natori K, Nagase D, Ishihara S, Shibuya A, Toyoda Y, Kato M, Kuraishi Y, Izumi H. Chemotherapy our clinic in elderly. Eur Geriatr Med 2013. [DOI: 10.1016/j.eurger.2013.07.325] [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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Kitada S, Yamada S, Kuma A, Ouchi S, Tasaki T, Nabeshima A, Noguchi H, Wang KY, Shimajiri S, Nakano R, Izumi H, Kohno K, Matsumoto T, Sasaguri Y. Polypeptide N-acetylgalactosaminyl transferase 3 independently predicts high-grade tumours and poor prognosis in patients with renal cell carcinomas. Br J Cancer 2013; 109:472-81. [PMID: 23799843 PMCID: PMC3721383 DOI: 10.1038/bjc.2013.331] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [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: 01/18/2013] [Revised: 05/29/2013] [Accepted: 06/04/2013] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND The polypeptide N-acetylgalactosaminyltransferases (GalNAc-Ts) family of enzymes regulates the initial steps of mucin-type O-glycosylation. N-acetylgalactosaminyltransferases might show novel patterns of GalNAc-T glycosylation on tumour-derived proteins, which could influence cancer biology, but its mechanisms are unclear. We investigated the association of GalNAc-T3 and -T6 expressions with clinicopathological features and prognoses of patients with renal cell carcinomas (RCCs). METHODS Expressions of GalNAc-T3/6 and cell-adhesion molecules were analysed immunohistochemically in 254 paraffin-embedded tumour samples of patients with RCC. RESULTS Of 138 GalNAc-T3+ cases, 46 revealed significant co-expression with GalNAc-T6. N-acetylgalactosaminyltransferases-3+ expression showed a close relationship to poor clinical performance and large tumour size, or pathologically high Fuhrman's grading, and presence of vascular invasion and necrosis. The GalNAc-T3-positivity potentially suppressed adhesive effects with a significantly low β-catenin expression. Univariate and multivariate analyses showed the GalNAc-T3+ group, but not the GalNAc-T6+ group, to have significantly worse survival rates. CONCLUSION N-acetylgalactosaminyltransferases-3 expression independently predicts high-grade tumour and poor prognosis in patients with RCC, and may offer a therapeutic target against RCC.
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Affiliation(s)
- S Kitada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Urology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Yamada
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - A Kuma
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Ouchi
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - T Tasaki
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - A Nabeshima
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - H Noguchi
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - K-Y Wang
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Department of Bio-information Research Center, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - S Shimajiri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - R Nakano
- Laboratory of Pathology, Kyushu Kosei Nenkin Hospital, Kitakyushu 806-8501, Japan
| | - H Izumi
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - K Kohno
- Department of Molecular Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - T Matsumoto
- Department of Urology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
| | - Y Sasaguri
- Department of Pathology and Cell Biology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan
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Izumi H, Kosaka N, Shimizu T, Sekine K, Ochiya T, Takase M. Bovine milk contains microRNA and messenger RNA that are stable under degradative conditions. J Dairy Sci 2013; 95:4831-4841. [PMID: 22916887 DOI: 10.3168/jds.2012-5489] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 05/13/2012] [Indexed: 01/18/2023]
Abstract
We previously reported that microRNA (miRNA) is present in human breast milk. Recently, other groups have reported that bovine milk also contains miRNA; however, these reports are few. We therefore investigated bovine milk miRNA using microarray and quantitative PCR analyses to identify the differences between colostrum and mature milk. The RNA concentration in a colostrum whey fraction was higher than that in a mature milk whey fraction. In total, 102 miRNA were detected in bovine milk by microarray analysis (100 in colostrum and 53 in mature milk; 51 were common to both). Among these miRNA, we selected several immune- and development-related miRNA, including miR-15b, miR-27b, miR-34a, miR-106b, miR-130a, miR-155, and miR-223. These miRNA were detected in bovine milk by quantitative PCR, and each of these miRNA was significantly more highly expressed in colostrum than in mature milk. We also confirmed the presence of some mRNA in bovine milk. Nevertheless, synthesized miRNA spiked in the raw milk whey were degraded, and naturally existing miRNA and mRNA in raw milk were resistant to acidic conditions and RNase treatment. The RNA molecules in milk were stable. We also detected miRNA and mRNA in infant formulas purchased from Japanese markets. It is still unknown whether milk-derived RNA molecules play biological roles in infants; however, if milk-derived RNA do show functions in infants, our data will help guide future studies.
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Affiliation(s)
- H Izumi
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan.
| | - N Kosaka
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Chuo-ku, Tokyo 104-0045, Japan
| | - T Shimizu
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
| | - K Sekine
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
| | - T Ochiya
- Division of Molecular and Cellular Medicine, National Cancer Center Research Institute, Chuo-ku, Tokyo 104-0045, Japan
| | - M Takase
- Nutritional Science Institute, Morinaga Milk Industry Co., Ltd., Zama, Kanagawa 252-8583, Japan
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Osada K, Hanawa M, Tsunoda K, Izumi H. Evaluation of the Masking of Dimethyl Sulfide Odors by Citronellal, Limonene and Citral through the Use of Trained Odor Sensor Mice. Chem Senses 2012; 38:57-65. [DOI: 10.1093/chemse/bjs077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Natori K, Nagase D, Fujimoto Y, Shibuya A, Ishihara S, Kuraishi Y, Izumi H. Study of the elderly person multiple neoplasms consisting of gastric cancer and hematological malignancy. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.236] [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: 10/27/2022]
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Natori K, Ishihara S, Nagase D, Shibuya A, Fujimoto Y, Kuraishi Y, Izumi H. The elderly person who was diagnosed malignant lymphoma that died early period experience of 11 cases. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.243] [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: 10/27/2022]
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Natori K, Nagase D, Ishihara S, Izumi H. Examination about chemotherapies in the elderly person malignant lymphoma and the oral surgery treatment. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.234] [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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Natori K, Nagase D, Ishihara S, Shibuya A, Kuraishi Y, Fujimoto Y, Kuraishi Y, Izumi H. Infiltration of gastric mucosa about untreated malignant lymphoma in elderly. Eur Geriatr Med 2012. [DOI: 10.1016/j.eurger.2012.07.237] [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: 10/27/2022]
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Kagami S, Kurita T, Kawagoe T, Toki N, Matsuura Y, Hachisuga T, Matsuyama A, Hashimoto H, Izumi H, Kohno K. Prognostic significance of BAF57 expression in patients with endometrial carcinoma. Histol Histopathol 2012; 27:593-9. [PMID: 22419023 DOI: 10.14670/hh-27.593] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was conducted to elucidate the prognostic significance of BAF57 in patients with endometrial carcinoma. We investigated the relationship between the immunohistochemical expression of BAF57 and various clinicopathological variables in 111 endometrial carcinomas. Both univariate and multivariate regression analyses were performed. The correlations between the BAF57 expression and the other variables including estrogen receptor (ER) and p53 were examined. The high nuclear BAF57 expression was detected in 42 (37.8%) endometrial carcinomas, and 69 (62.2%) endometrial carcinomas were defined as having low nuclear BAF57 expression. The BAF57 expression was significantly associated with the surgical stage, grade of the tumor, myometrial invasion, lympho-vascular space invasion (LVSI) and lymph node metastasis. The 10-year overall survival rates of patients with low and high BAF57 expression were 96.9% and 58.2%, respectively (p<0.001). A multivariate analysis identified BAF57 expression as an independent prognostic factor. The BAF57 expression was significantly correlated with p53 expression (r=0.312, P=0.001), but was not correlated with ER expression (r= -0.141, P=0.14). The high BAF57 expression is an independent marker of poor prognosis of the patients in endometrial carcinomas. The inhibition of BAF57 activity may be one of the candidates for endometrial cancer therapy, especially therapy for aggressive tumors showing overexpression of p53.
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Affiliation(s)
- S Kagami
- Departmentsof Obstetrics, University of Occupational and Environmental Health School of Medicine, Yahatanishi-ku, Kitakyushu, Japan
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