1
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Takeuchi S, Takeichi T, Koike Y, Takama H, Tanahashi K, Okuno Y, Ishii N, Muro Y, Ogi T, Suga Y, Akiyama M. Mutations in SAM syndrome and palmoplantar keratoderma patients suggest genotype/phenotype correlations in DSG1 mutations. J Eur Acad Dermatol Venereol 2021; 36:e215-e218. [PMID: 34657339 DOI: 10.1111/jdv.17752] [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] [Received: 07/17/2021] [Revised: 09/21/2021] [Accepted: 10/13/2021] [Indexed: 11/28/2022]
Affiliation(s)
- S Takeuchi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Koike
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Takama
- Department of Dermatology, Aichi Medical University, Nagakute, Japan
| | - K Tanahashi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Okuno
- Medical Genomics Center, Nagoya University Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Virology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - Y Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Ogi
- Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Y Suga
- Department of Dermatology, Juntendo University Urayasu Hospital, Urayasu, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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2
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Yamanaka M, Iwata H, Masuda K, Araki M, Okuno Y, Okamura M, Koiwa J, Tanaka T. A novel orexin antagonist from a natural plant was discovered using zebrafish behavioural analysis. Eur Rev Med Pharmacol Sci 2021; 24:5127-5139. [PMID: 32432777 DOI: 10.26355/eurrev_202005_21207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Phenotypic screening is one of the most practical approaches to the identification of mediators of behaviour, since it is difficult to model brain function in vitro, at a cellular level. We used a zebrafish (Danio rerio) behavioural assay to discover novel, natural, neuroactive compounds. MATERIALS AND METHODS A zebrafish behavioural assay was performed for seven natural compounds, obtained from plants. The behavioural profiles were compared to those of known psychoactive drugs. We characterised a natural compound exhibiting a behaviour profile similar to that of suvorexant, using in silico, in vitro and microarray expression analysis. RESULTS The behavioural analysis performed in this study classified central nervous system drugs according to their mechanism. Zebrafish treated with a natural compound, 8b-(4'-Hydroxytigloyloxy) costunolide (8b), showed behaviour profiles similar to those of zebrafish treated with suvorexant, a known orexin antagonist. This behavioural assay was validated using in silico and in vitro assays, which revealed that the new compound was a dual orexin receptor antagonist. In addition, transcriptome analysis suggested that 8b might regulate the nuclear factor-κB (NF-κB) related pathway. CONCLUSIONS We conclude that zebrafish phenotypic screening, combined with in silico assays and gene expression profiling, is a useful strategy to discover and characterize novel therapeutic compounds, including natural products.
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Affiliation(s)
- M Yamanaka
- Department of Systems Pharmacology, Mie University, Graduate School of Medicine, Tsu, Mie, Japan.
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3
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Komada H, Hirota Y, So A, Nakamura T, Okuno Y, Fukuoka H, Iguchi G, Takahashi Y, Sakaguchi K, Ogawa W. Insulin secretion and sensitivity before and after surgical treatment for aldosterone-producing adenoma. Diabetes Metab 2019; 46:236-242. [PMID: 31676325 DOI: 10.1016/j.diabet.2019.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 09/22/2019] [Accepted: 10/14/2019] [Indexed: 11/16/2022]
Abstract
AIM Primary aldosteronism, which is usually caused by an aldosterone-producing tumour, affects glucose metabolism. The effects of this condition on insulin secretion and insulin sensitivity have remained unclear, however. To gain insight into the influence of primary aldosteronism on glucose tolerance, various parameters related to insulin secretion or insulin sensitivity in patients with an aldosterone-producing tumour were comprehensively analyzed. METHODS To assess 14 patients with an aldosterone-producing tumour, hyperglycaemic and hyperinsulinaemic-euglycaemic clamp tests as well as oral glucose tolerance tests (OGTTs) were performed before and after tumour excision. Time between presurgical analysis and surgery was 27-559 (194±132) days, and 14-142 (51±38) days between surgery and postsurgical analysis. Various parameters related to insulin secretion or sensitivity as determined by OGTT as well as hyperglycaemic and hyperinsulinaemic-euglycaemic clamp analyses were evaluated. RESULTS Surgical treatment of tumours ameliorated hypokalaemia and reduced plasma aldosterone levels. First and second phases of insulin secretion during the hyperglycaemic clamp, as well as the insulinogenic index and total insulin secretion measured during OGTT, were also improved after surgery. In addition, the insulin sensitivity index determined during the hyperinsulinaemic-euglycaemic clamp was reduced after surgery. CONCLUSION Primary aldosteronism impairs insulin secretion.
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Affiliation(s)
- H Komada
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Y Hirota
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
| | - A So
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - T Nakamura
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Y Okuno
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - H Fukuoka
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - G Iguchi
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Y Takahashi
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - K Sakaguchi
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - W Ogawa
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
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4
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Ikemura S, Yasuda H, Matsumoto S, Kamada M, Betsuyaku T, Okuno Y, Goto K, Tsuchihara K, Soejima K. Clinical characterization of rare EGFR mutations in non-small cell lung cancer and in silico prediction of drug sensitivity. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.043] [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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5
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Takeichi T, Honda A, Okuno Y, Kojima D, Kono M, Nakamura Y, Tohyama M, Tanaka T, Aoyama Y, Akiyama M. Sterol profiles are valuable biomarkers for phenotype expression of Conradi-Hünermann-Happle syndrome with EBP mutations. Br J Dermatol 2018; 179:1186-1188. [PMID: 29851033 DOI: 10.1111/bjd.16823] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - A Honda
- Joint Research Center, Tokyo Medical University Ibaraki Medical Center, Ami, Japan
| | - Y Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - D Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - M Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - Y Nakamura
- Department of Pediatrics, Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - M Tohyama
- Department of Dermatology, Ehime University School of Medicine, Toon, Japan
| | - T Tanaka
- Department of Pediatrics, Kawasaki General Hospital, Kawasaki Medical School, Okayama, Japan
| | - Y Aoyama
- Department of Dermatology, Kawasaki General Hospital, Kawasaki Medical School, Okayama, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
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6
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Takeichi T, Katayama C, Tanaka T, Okuno Y, Murakami N, Kono M, Sugiura K, Aoyama Y, Akiyama M. A novel IFIH1 mutation in the pincer domain underlies the clinical features of both Aicardi-Goutières and Singleton-Merten syndromes in a single patient. Br J Dermatol 2017; 178:e111-e113. [PMID: 29270977 DOI: 10.1111/bjd.15869] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- T Takeichi
- Departments of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - C Katayama
- Departments of Dermatology, Kawasaki General Hospital, Kawasaki Medical School, Okayama, Japan
| | - T Tanaka
- Pediatrics, Kawasaki General Hospital, Kawasaki Medical School, Okayama, Japan
| | - Y Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan.,Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - N Murakami
- Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - M Kono
- Departments of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
| | - K Sugiura
- Department of Dermatology, Fujita Health University School of Medicine, Toyoake, Japan
| | - Y Aoyama
- Departments of Dermatology, Kawasaki General Hospital, Kawasaki Medical School, Okayama, Japan
| | - M Akiyama
- Departments of Dermatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan
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7
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Takeichi T, Tomimura S, Okuno Y, Hamada M, Kono M, Sugiura K, Akiyama M. Trichothiodystrophy, complementation group A complicated with squamous cell carcinoma. J Eur Acad Dermatol Venereol 2017; 32:e75-e77. [PMID: 28833524 DOI: 10.1111/jdv.14531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Tomimura
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Hamada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Sugiura
- Department of Dermatology, Fujita Health University School of Medicine, Toyoake, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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8
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Takeichi T, Kobayashi A, Ogawa E, Okuno Y, Kataoka S, Kono M, Sugiura K, Okuyama R, Akiyama M. Autosomal dominant familial generalized pustular psoriasis caused by a CARD14
mutation. Br J Dermatol 2017; 177:e133-e135. [DOI: 10.1111/bjd.15442] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- T. Takeichi
- Department of Dermatology; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
| | - A. Kobayashi
- Department of Pediatrics; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
| | - E. Ogawa
- Department of Pediatrics; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
| | - Y. Okuno
- Department of Dermatology; Shinshu University; Graduate School of Medicine; Matsumoto Japan
- Center for Advanced Medicine and Clinical Research; Nagoya University Hospital; Nagoya Japan
| | - S. Kataoka
- Center for Advanced Medicine and Clinical Research; Nagoya University Hospital; Nagoya Japan
| | - M. Kono
- Department of Dermatology; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
| | - K. Sugiura
- Department of Dermatology; Fujita Health University School of Medicine; Toyoake Japan
| | - R. Okuyama
- Department of Pediatrics; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
| | - M. Akiyama
- Department of Dermatology; Nagoya University Graduate School of Medicine; 65 Tsurumai-cho Showa-ku Nagoya 466-8550 Japan
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9
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Goto H, Kariya R, Kudo E, Okuno Y, Ueda K, Katano H, Okada S. Restoring PU.1 induces apoptosis and modulates viral transactivation via interferon-stimulated genes in primary effusion lymphoma. Oncogene 2017; 36:5252-5262. [PMID: 28481873 DOI: 10.1038/onc.2017.138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/22/2017] [Accepted: 03/24/2017] [Indexed: 12/20/2022]
Abstract
Primary effusion lymphoma (PEL), which is an aggressive subgroup of B-cell lymphoma associated with Kaposi sarcoma-associated herpes virus/human herpes virus-8, is refractory to the standard treatment, and exhibits a poor survival. Although PU.1 is downregulated in PEL, the potential role of its reduction remains to be elucidated. In this investigation, we analyzed the DNA methylation of PU.1 cis-regulatory elements in PEL and the effect of restoring PU.1 on PEL cells. The mRNA level of PU.1 was downregulated in PEL cells. The methylated promoter and enhancer regions of the PU.1 gene were detected in PEL cells. Suppression of cell growth and apoptosis were caused by the restoration of PU.1 in PEL cells. A microarray analysis revealed that interferon-stimulated genes (ISGs) including pro-apoptotic ISGs were strongly increased in BCBL-1 cells after the induction of PU.1. Reporter assays showed that PU.1 transactivated pro-apoptotic ISG promoters, such as the XAF1, OAS1 and TRAIL promoters. Mutations at the PU.1 binding sequences suppressed its transactivation. We confirmed the binding of PU.1 to the XAF1, OAS1 and TRAIL promoters in a chromatin immunoprecipitation assay. PU.1 suppressed ORF57 activation by inducing IRF7. The reinduction of PU.1 reduced formation of ascites and lymphoma cell infiltration of distant organs in PEL xenograft model mice. Collectively, PU.1 has a role in tumor suppression in PEL and its down-regulation is associated with PEL development. Restoring PU.1 with demethylation agents may be a novel therapeutic approach for PEL.
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Affiliation(s)
- H Goto
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, Honjo, Kumamoto, Japan
| | - R Kariya
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, Honjo, Kumamoto, Japan
| | - E Kudo
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, Honjo, Kumamoto, Japan
| | - Y Okuno
- Departments of Hematology, Rheumatology, and Infectious Disease, Kumamoto University Graduate School of Medicine, Honjo, Kumamoto, Japan
| | - K Ueda
- Division of Virology, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - H Katano
- Department of Pathology, National Institute of Infectious Diseases, Toyama, Shinjuku, Tokyo, Japan
| | - S Okada
- Division of Hematopoiesis, Center for AIDS Research, Kumamoto University, Honjo, Kumamoto, Japan
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10
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Ueno N, Nishimura N, Ueno S, Endo S, Tatetsu H, Hirata S, Hata H, Matsuoka M, Mitsuya H, Okuno Y. PU.1 acts as tumor suppressor for myeloma cells through direct transcriptional repression of IRF4. Oncogene 2017; 36:4481-4497. [PMID: 28368411 DOI: 10.1038/onc.2017.79] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/09/2017] [Accepted: 02/26/2017] [Indexed: 12/13/2022]
Abstract
We previously reported that PU.1 is downregulated in the majority of myeloma cell lines and primary myeloma cells of certain myeloma patients, and conditional expression of PU.1 in such myeloma cell lines induced cell cycle arrest and apoptosis. We found downregulation of IRF4 protein in the U266 myeloma cell line following induction of PU.1. Previous studies reported that knockdown of IRF4 in myeloma cell lines induces apoptosis, prompting us to further investigate the role of IRF4 downregulation in PU.1-induced cell cycle arrest and apoptosis in myeloma cells. PU.1 induced downregulation of IRF4 at the protein level, cell cycle arrest and apoptosis in six myeloma cell lines. Chromatin immunoprecipitation (ChIP) revealed that PU.1 directly binds to the IRF4 promoter, whereas a reporter assay showed that PU.1 may suppress IRF4 promoter activity. Stable expression of IRF4 in myeloma cells expressing PU.1 partially rescued the cells from apoptosis induced by PU.1. As it was reported that IRF4 directly binds to the IRF7 promoter and downregulates its expression in activated B cell-like subtype of diffuse large B cell lymphoma cells, we performed ChIP assays and found that IRF4 directly binds the IRF7 promoter in myeloma cells. It is known that IRF7 positively upregulates interferon-β (IFNβ) and induces apoptosis in many cell types. Binding of IRF4 to the IRF7 promoter decreased following PU.1 induction, accompanied by downregulation of IRF4 protein expression. Knockdown of IRF7 protected PU.1-expressing myeloma cells from apoptosis. Furthermore, IFNβ, which is a downstream target of IRF7, was upregulated in myeloma cells along with IRF7 after PU.1 induction. Finally, we evaluated the mRNA expression levels of PU.1, IRF4 and IRF7 in primary myeloma cells from patients and found that PU.1 and IRF7 were strongly downregulated in contrast to the high expression levels of IRF4. These data strongly suggest that PU.1-induced apoptosis in myeloma cells is associated with IRF4 downregulation and subsequent IRF7 upregulation.
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Affiliation(s)
- N Ueno
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - N Nishimura
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - S Ueno
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - S Endo
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - H Tatetsu
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - S Hirata
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - H Hata
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - M Matsuoka
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - H Mitsuya
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
| | - Y Okuno
- Departments of Hematology, Rheumatology and Infectious Diseases, Kumamoto University Graduate School of Medicine, Chuo-ku, Kumamoto, Japan
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Suzuki K, Suzuki Y, Hama A, Muramatsu H, Nakatochi M, Gunji M, Ichikawa D, Hamada M, Taniguchi R, Kataoka S, Murakami N, Kojima D, Sekiya Y, Nishikawa E, Kawashima N, Narita A, Nishio N, Nakazawa Y, Iwafuchi H, Watanabe KI, Takahashi Y, Ito M, Kojima S, Kato S, Okuno Y. Recurrent MYB rearrangement in blastic plasmacytoid dendritic cell neoplasm. Leukemia 2017; 31:1629-1633. [PMID: 28344318 DOI: 10.1038/leu.2017.101] [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: 12/27/2022]
Affiliation(s)
- K Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suzuki
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - A Hama
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nakatochi
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - M Gunji
- Department of Pathology, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - D Ichikawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Hamada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - R Taniguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kataoka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Murakami
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - D Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Sekiya
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - E Nishikawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Kawashima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Nishio
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Y Nakazawa
- Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - H Iwafuchi
- Department of Pathology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - K-I Watanabe
- Department of Hematology and Oncology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Y Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Ito
- Department of Pathology, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - S Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Kato
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Y Okuno
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
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12
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Yoshida N, Sakaguchi H, Muramatsu H, Okuno Y, Song C, Dovat S, Shimada A, Ozeki M, Ohnishi H, Teramoto T, Fukao T, Kondo N, Takahashi Y, Matsumoto K, Kato K, Kojima S. Germline IKAROS mutation associated with primary immunodeficiency that progressed to T-cell acute lymphoblastic leukemia. Leukemia 2017; 31:1221-1223. [PMID: 28096536 DOI: 10.1038/leu.2017.25] [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: 01/30/2023]
Affiliation(s)
- N Yoshida
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - H Sakaguchi
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Okuno
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - C Song
- Division of Hematology/Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - S Dovat
- Division of Hematology/Oncology, Department of Pediatrics, Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - A Shimada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Ozeki
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - H Ohnishi
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - T Teramoto
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - T Fukao
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - N Kondo
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Y Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Matsumoto
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - K Kato
- Department of Hematology and Oncology, Children's Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan
| | - S Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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13
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Uneno Y, Baba M, Kanai M, Taneishi K, Nakatsui M, Okuno Y, Muto M, Morita T. 484O_PR Validation of the set of six adaptable prognosis prediction (SAP) models for cancer patients in palliative care settings: A sub analysis of the Japan-prognostic assessment tools validation (J-ProVal) study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw595] [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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Abstract
This study was conducted to characterize the alterations in serum ionized calcium induced by contrast media (CM) and to determine the cause of the change. Fresh human blood samples as well as an electrolyte solution (ES) containing 1.2 mM calcium ions were diluted with CM and alterations in ionized calcium were measured using an electrometer. The CM tested were diatrizoate, iopamidol, iohexol, ioxaglate, isotonic saline, Na2-Ca-EDTA and pure meglumine. When CM were mixed with blood, ionic CM produced a greater decrease in ionized calcium than nonionic CM or saline. When mixed with ES, a significant reduction of ionized calcium was induced by ioxaglate and diatrizoate in comparison with saline. Na2-Ca-EDTA and meglumine caused no reduction in ionized calcium. Ioxaglate and diatrizoate caused calcium binding due to anions; binding induced by the latter was more prominent than that by the former. These observations suggest that a nonionic CM is more desirable for coronary arteriography of high-risk patients.
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Hayakawa K, Mitsumori M, Uwatoko H, Monji T, Okuno Y, Torizuka T, Satoh Y, Tanaka F, Kitamura K, Misaki T. Acute Electrolyte Disturbances in Coronary Sinus during Left Coronary Arteriography in Man. Acta Radiol 2016. [DOI: 10.1177/028418519303400306] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Electrolyte disturbances, particularly reduction of ionized calcium, induced by iodinated contrast media (CM) are important considerations in coronary arteriography. A study was conducted in 24 patients to evaluate the acute electrolyte alterations in the coronary sinus during left coronary arteriography. During left coronary arteriography, coronary sinus blood was withdrawn for measurement of electrolytes. The CM used were diatrizoate, ioxaglate, iohexol, and iopamidol. The hematocrit was decreased moderately by all 4 CM used at 5 s and returned to the control level at 15 s. The level of ionized calcium was decreased by all CM at 5 s. Prolonged reduction of ionic calcium was observed with diatrizoate and ioxaglate at 15 s. The level of potassium was almost unchanged by diatrizoate and ioxaglate in spite of hemodilution, which may lead us to a hypothesis that potassium can be released from the intracellular spaces such as red blood cells and vascular endothelial cells. Thus the depression of left ventricular function might be caused not only by reduction of ionized calcium, but also by a relative increase in the level of serum potassium.
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Mitsumori M, Hayakawa K, Soga T, Maeda M, Torizuka T, Okuno Y, Misaki T, Dokoh S. Effects of Contrast Media on the RR and QT Interval during Coronary Arteriography. Acta Radiol 2016. [DOI: 10.1177/028418519103200206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
During coronary arteriography, transient prolongation of the RR and QT intervals can be observed to occur. Animal experiments have suggested that low-osmolality contrast media have less effect, but there have been few clinical studies of this phenomenon. We analyzed 95 electrocardiographic records from patients who had undergone coronary arteriography and assessed the maximal prolongation of the RR and QT intervals. The contrast media used for arteriography included meglumine sodium diatrizoate, iopamidol, iohexol, and meglumine sodium ioxaglate. Diatrizoate caused the greatest electrocardiographic changes. Among the low osmolality contrast media, ioxaglate caused the smallest bradycardial effect and iohexol the smallest prolongation of the QT interval. It appears necessary to consider some additional factors for osmolality or ionicity, such as the chemotoxicity of the chemical structure of the iodinated contrast medium moiety, when assessing their potential adverse effect on the cardiac conduction system.
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Kitamura K, Okuno Y, Yoshida K, Sanada M, Shiraishi Y, Muramatsu H, Kobayashi R, Furukawa K, Miyano S, Kojima S, Ogawa S, Kunishima S. Functional characterization of a novel GFI1B mutation causing congenital macrothrombocytopenia. J Thromb Haemost 2016; 14:1462-9. [PMID: 27122003 DOI: 10.1111/jth.13350] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 02/01/2016] [Accepted: 04/11/2016] [Indexed: 01/04/2023]
Abstract
UNLABELLED Essentials Two groups recently reported GFI1B as a novel causative gene for congenital macrothrombocytopenia. We performed functional analysis of a novel GFI1B mutation and previous mutations. An immunofluorescence analysis of the platelet CD34 expression can be useful as a screening test. Mutant-transduced megakaryocytes produced enlarged proplatelet tips which were reduced in number. SUMMARY Background GFI1B is an essential transcription factor for megakaryocyte and erythrocyte development. Two groups have recently identified GFI1B as a novel causative gene for congenital macrothrombocytopenia associated with α-granule deficiency. Methods We performed whole exome sequencing and identified a novel GFI1B p.G272fsX274 mutation in a family with macrothrombocytopenia, and a decreased number of platelet α-granules and abnormally shaped red blood cells. p.G272fsX274 and the previous two mutations all predicted disruption of an essential DNA-binding domain in GFI1B. We therefore performed functional studies to characterize the biochemical and biological effects of these three patient-derived mutations. Results An immunofluorescence analysis revealed decreased thrombospondin-1 and increased CD34 expression in platelets from our patient. Consistent with the previous studies, the three patient-derived mutants were unable to repress the expression of the reporter gene and had a dominant-negative effect over wild-type GFI1B. In addition, the three mutations abolished recognition of a consensus-binding site in gel shift assays. Furthermore, transduction of mouse fetal liver-derived megakaryocytes with the three GFI1B mutants resulted in the production of abnormally large proplatelet tips, which were reduced in number. Conclusions Our study provides further proof of concept that GFI1B is an essential protein for the normal development of the megakaryocyte lineage.
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Affiliation(s)
- K Kitamura
- Department of Advanced Diagnosis, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
- Department of Biochemistry II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Y Okuno
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Sanada
- Department of Advanced Diagnosis, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Y Shiraishi
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - R Kobayashi
- Pediatrics, Sapporo Hokuyu Hospital, Sapporo, Japan
| | - K Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai, Japan
| | - S Miyano
- Laboratory of DNA Information Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Laboratory of Sequence Data Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - S Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Kunishima
- Department of Advanced Diagnosis, Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
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Del Prete M, Adriani O, Berti E, Bonechi L, Bongi M, Castellini G, D’Alessandro R, Haguenauer M, Itow Y, Kasahara K, Kawade K, Makino Y, Masuda K, Matsubayashi E, Menjo H, Mitsuka G, Muraki Y, Okuno Y, Papini P, Perrot AL, Ricciarini S, Sako T, Sakurai N, Sugiura Y, Suzuki T, Tamura T, Tiberio A, Torii S, Tricomi A, Turner W, Zhou Q. LHCf experiment: forward physics at LHC for cosmic rays study. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201612604014] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Nakagawa K, Okuno Y, Nishikomori R, Yokoyama K, Tanaka T, Kawai T, Yasumi T, Umeda K, Nakayama N, Toguchida J, Hagiwara M, Heike T. Understanding the pathophysiology of NOMID arthropathy for drug discovery by iPSCs technology. Pediatr Rheumatol Online J 2015. [PMCID: PMC4599947 DOI: 10.1186/1546-0096-13-s1-p195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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20
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Yamaguchi D, Taneishi K, Tamon A, Hamanaka M, Brown J, Mori Y, Kanai M, Matsumoto S, Okuno Y, Muto M. 3116 Analysis of clinical practice data for predictive factors of neutrophil counts during weekly paclitaxel chemotherapy. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31757-9] [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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Bonechi L, Adriani O, Berti E, Bongi M, Castellini G, D’Alessandro R, Del Prete M, Haguenauer M, Itow Y, Kasahara K, Makino Y, Masuda K, Matsubara Y, Matsubayashi E, Menjo H, Mitsuka G, Muraki Y, Okuno Y, Papini P, Perrot AL, Ricciarini S, Sako T, Sakurai N, Shimizu Y, Sugiura Y, Suzuki T, Tamura T, Tiberio A, Torii S, Tricomi A, Turner W, Yoshida K, Zhou Q. Latest LHCf results and preparation to the LHC run for 13 TeV proton–proton interactions. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20159504010] [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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22
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Okuno Y. Mid-term effects of transcatheter arterial embolization using imipenem/cilastatin sodium for tendinopathy and enthesopathy. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.508] [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: 12/01/2022] Open
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23
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Okuno Y. Feasibility and effects of transcatheter arterial embolization for frozen shoulder refractory to non-surgical management. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.135] [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: 11/17/2022] Open
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24
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Haferlach T, Nagata Y, Grossmann V, Okuno Y, Bacher U, Nagae G, Schnittger S, Sanada M, Kon A, Alpermann T, Yoshida K, Roller A, Nadarajah N, Shiraishi Y, Shiozawa Y, Chiba K, Tanaka H, Koeffler HP, Klein HU, Dugas M, Aburatani H, Kohlmann A, Miyano S, Haferlach C, Kern W, Ogawa S. Landscape of genetic lesions in 944 patients with myelodysplastic syndromes. Leukemia 2013; 28:241-7. [PMID: 24220272 PMCID: PMC3918868 DOI: 10.1038/leu.2013.336] [Citation(s) in RCA: 1125] [Impact Index Per Article: 102.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 10/21/2013] [Accepted: 10/30/2013] [Indexed: 02/07/2023]
Abstract
High-throughput DNA sequencing significantly contributed to diagnosis and prognostication in patients with myelodysplastic syndromes (MDS). We determined the biological and prognostic significance of genetic aberrations in MDS. In total, 944 patients with various MDS subtypes were screened for known/putative mutations/deletions in 104 genes using targeted deep sequencing and array-based genomic hybridization. In total, 845/944 patients (89.5%) harbored at least one mutation (median, 3 per patient; range, 0-12). Forty-seven genes were significantly mutated with TET2, SF3B1, ASXL1, SRSF2, DNMT3A, and RUNX1 mutated in >10% of cases. Many mutations were associated with higher risk groups and/or blast elevation. Survival was investigated in 875 patients. By univariate analysis, 25/48 genes (resulting from 47 genes tested significantly plus PRPF8) affected survival (P<0.05). The status of 14 genes combined with conventional factors revealed a novel prognostic model ('Model-1') separating patients into four risk groups ('low', 'intermediate', 'high', 'very high risk') with 3-year survival of 95.2, 69.3, 32.8, and 5.3% (P<0.001). Subsequently, a 'gene-only model' ('Model-2') was constructed based on 14 genes also yielding four significant risk groups (P<0.001). Both models were reproducible in the validation cohort (n=175 patients; P<0.001 each). Thus, large-scale genetic and molecular profiling of multiple target genes is invaluable for subclassification and prognostication in MDS patients.
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Affiliation(s)
- T Haferlach
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - Y Nagata
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - V Grossmann
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - Y Okuno
- Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - U Bacher
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - G Nagae
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - S Schnittger
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - M Sanada
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Kon
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Alpermann
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - K Yoshida
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Roller
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - N Nadarajah
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - Y Shiraishi
- Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Y Shiozawa
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Chiba
- Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Tanaka
- Laboratory of Sequence Data Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H P Koeffler
- 1] Department of Hematology/Oncology, Cedars-Sinai Medical Center, Los Angeles, CA, USA [2] Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - H-U Klein
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - M Dugas
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - H Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - A Kohlmann
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - S Miyano
- 1] Laboratory of Sequence Data Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan [2] Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - C Haferlach
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - W Kern
- Munich Leukemia Laboratory (MLL), Munich, Germany
| | - S Ogawa
- 1] Cancer Genomics Project, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan [2] Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Onuki Y, Horita A, Kuribayashi H, Okuno Y, Obata Y, Takayama K. Non-destructive monitoring of creaming of oil-in-water emulsion-based formulations using magnetic resonance imaging. Drug Dev Ind Pharm 2013; 40:937-43. [PMID: 23631538 DOI: 10.3109/03639045.2013.790903] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A non-destructive method for monitoring creaming of emulsion-based formulations is in great demand because it allows us to understand fully their instability mechanisms. This study was aimed at demonstrating the usefulness of magnetic resonance (MR) techniques, including MR imaging (MRI) and MR spectroscopy (MRS), for evaluating the physicochemical stability of emulsion-based formulations. Emulsions that are applicable as the base of practical skin creams were used as test samples. Substantial creaming was developed by centrifugation, which was then monitored by MRI. The creaming oil droplet layer and aqueous phase were clearly distinguished by quantitative MRI by measuring T1 and the apparent diffusion coefficient. Components in a selected volume in the emulsions could be analyzed using MRS. Then, model emulsions having different hydrophilic-lipophilic balance (HLB) values were tested, and the optimal HLB value for a stable dispersion was determined. In addition, the MRI examination enables the detection of creaming occurring in a polyethylene tube, which is commonly used for commercial products, without losing any image quality. These findings strongly indicate that MR techniques are powerful tools to evaluate the physicochemical stability of emulsion-based formulations. This study will make a great contribution to the development and quality control of emulsion-based formulations.
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Affiliation(s)
- Yoshinori Onuki
- Department of Pharmaceutics, Hoshi University , Ebara 2-4-41, Shinagawa, Tokyo 142-8501 , Japan
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Damm F, Chesnais V, Nagata Y, Yoshida K, Okuno Y, Birnbaum D, Ogawa S, Bernard O, Fontenay M, Kosmider O. O-007 BCOR and BCORL1 mutations in myelodysplasia: Prevalence, prognosis and clonal hierarchy. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70029-8] [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: 11/26/2022]
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Muramatsu H, Sakaguchi H, Xu Y, Yoshida K, Okuno Y, Hama A, Takahashi Y, Makishima H, Maciejewski J, Ogawa S, Kojima S. P-146 Clinical and genetic characterization of 17 juvenile myelomonocytic leukemia patients with c-CBL mutations. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70194-2] [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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Kishi T, Kokubo M, Takayama K, Kosaka Y, Okuno Y, Fujita S, Kaji R, Hata A, Tomii K, Katakami N. Feasibility of Definitive Concurrent Chemoradiation Therapy for Patients Over 80 Years Old With Non-small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1565] [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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Kishikawa R, Imai T, Ichinose T, Okuno Y, Arashidani K, Nishikawa M, Shimoda T, Iwanaga T. Effects of Asian Dust and Spherical Particles Exposure on Human Health and Allergic Symptom, Fukuoka, Japan. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.717] [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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Okuno Y, Kondo T, Saeki A, Uchida E, Teraoka H, Kitazawa T. Colon-specific contractile responses to tetrodotoxin in the isolated mouse gastrointestinal tract. ACTA ACUST UNITED AC 2011; 31:21-30. [PMID: 21332638 DOI: 10.1111/j.1474-8673.2011.00462.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
1 Tetrodotoxin (TTX) is a useful pharmacological tool for distinguishing neural and myogenic responses of isolated visceral organs to drugs. Although TTX does not generally affect smooth muscle tonus, in this study, we have found that TTX causes contraction of the mouse colon. The aim of this study was to characterize this TTX-induced contraction in the mouse gastrointestinal tract. 2 Longitudinal and circular muscle strips from the stomach and small intestine were less sensitive to TTX. However, TTX contracted both smooth muscle strips from the proximal colon and distal colon. 3 Pretreatment with TTX, Nω -nitro-L-arginine methyl ester (L-NAME), 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) and apamin inhibited the TTX-induced contraction. L-NAME, ODQ or apamin itself caused contraction in the colon but not in the gastric and small intestinal strips. Region dependency of L-NAME, ODQ and apamin-induced contraction correlated with that of TTX-induced contraction. 4 L-arginine but not D-arginine inhibited contractility of the colonic strips without affecting the contractility of muscle strips from other regions. Sodium nitroprusside caused strong relaxation of the colonic strips. 5 1,1-dimethyl-4-phenylpiperazinium (DMPP) caused relaxation of proximal and distal colons, which was significantly decreased by L-NAME or apamin. 6 In conclusion, among mouse gastrointestinal preparations, TTX induces contraction of colonic strips preferentially through blockade of potent tonic inhibitory neural outflow, which involves nitrergic and apamin-sensitive pathways. Colon-specific responses to L-arginine, L-NAME, ODQ and apamin support the hypothesis that there is a continuous suppression of colonic motility by enteric inhibitory neurons.
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Affiliation(s)
- Y Okuno
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
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Nishikawa M, Onuki Y, Okuno Y, Takayama K. Impact of the State of Water on the Dispersion Stability of a Skin Cream Formulation Elucidated by Magnetic Resonance Techniques. Chem Pharm Bull (Tokyo) 2011; 59:332-7. [DOI: 10.1248/cpb.59.332] [Citation(s) in RCA: 8] [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]
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Nishikawa M, Onuki Y, Okuno Y, Takayama K. Improving rheological characteristics of hydrophilic ointment base by treatment with a high-pressure wet-type jet mill. Drug Dev Ind Pharm 2009; 36:625-31. [DOI: 10.3109/03639040903406126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Kikuchi H, Kado Y, Matsumura H, Fukunishi Y, Kinoshita T, Okuno Y, Nakanishi I, Minakata S, Sakata T, Aritake K, Urade Y, Inoue T. Design of anti-allergic inhibitors for human hematopoietic prostaglandin D synthase. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308089009] [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: 11/10/2022] Open
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Tamaki Y, Ogura M, Sasaki R, Nakajima T, Yoshida K, Nishimura H, Okamoto Y, Okuno Y, Murakami M, Sugimura K. Intraoperative Radiotherapy for the Abdominal Lymph Nodes in Patients With Esophageal Carcinoma. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1316] [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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Kubota K, Funaki I, Okuno Y. Influences of the Hall Effect on the Plasma Flows in a Magnetoplasmadynamic Thruster. Fusion Science and Technology 2007. [DOI: 10.13182/fst07-a1355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Kubota
- Department of Energy Sciences, Tokyo Institute of Technology G-38, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8502 JAPAN
| | - I. Funaki
- Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science 3-1-1, Yoshinodai, Sagamihara 229-8510 JAPAN
| | - Y. Okuno
- Department of Energy Sciences, Tokyo Institute of Technology G-38, 4259, Nagatsuta-cho, Midori-ku, Yokohama 226-8502 JAPAN
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Hori Y, Suzuki K, Okuno Y, Nagaoka M, Futaki S, Sugiura Y. The engineering, structure, and DNA binding properties of a novel His4-type zinc finger peptide. Nucleic Acids Symp Ser 2003:295-6. [PMID: 12903385 DOI: 10.1093/nass/44.1.295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We have created a novel His4-type zinc finger protein (H4Sp1) engineered by Cys-->His mutations of the Cys2His2-type zinc finger in transcription factor Sp1. The CD and NMR studies reveal that the His4 domain has Zn(II)-dependent folding properties and similar secondary structures to wild-type Cys2His2 domain. The DNA binding experiments demonstrate that H4Sp1 can bind DNA in a specific way. The present artificial peptide H4Sp1 will provide valuable information about the interaction between a metallopeptide and DNA.
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Affiliation(s)
- Y Hori
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Araki M, Okuno Y, Sugiura Y. Expression mechanism of the allosteric interactions in a ribozyme catalysis. Nucleic Acids Symp Ser 2003:205-6. [PMID: 12903340 DOI: 10.1093/nass/44.1.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The contribution of substrate binding to cooperative regulation in the rate process of ribozyme catalysis has been investigated using allosteric ribozymes. The high sensitivity to the substrate lengths is attributed to the catalytic core folding which proceeds due to the energetic contribution of the substrate binding. One role of the effector (FMN) is the promotion of the core folding through the stabilization of the aptamer domain. Another role is the inhibition of the cleavage chemistry by perturbing the intermediate state in the rate process. The total effects of these two types of kinetic regulation determine the substrate dependency of the cooperative interaction on the catalytic reaction. An adequate correlation between the type of regulation and the substrate binding is responsible for the cooperative interaction in the kinetic process.
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Affiliation(s)
- M Araki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan
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39
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Kizu A, Shioi A, Jono S, Koyama H, Okuno Y, Nishizawa Y. 3P-0686 Cerivastatin inhibits in vitro calcification of human vascular smooth muscle cells induced by inflammatory mediators. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90905-6] [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: 10/25/2022]
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40
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41
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Shioi A, Kizu A, Jono S, Koyama H, Okuno Y, Nishizawa Y. 2P-0509 Development of atherosclerotic calcification in ApoE-deficient mice. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90650-7] [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: 10/25/2022]
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42
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Nakagawa N, Kubota R, Morikawa S, Nakagawa T, Baba K, Okuno Y. Characterization of new epidemic strains of influenza B virus by using neutralizing monoclonal antibodies. J Med Virol 2001; 65:745-50. [PMID: 11745940 DOI: 10.1002/jmv.2099] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
During the 1998-1999 influenza season, two distinct influenza B virus Yamagata group strains were isolated from the patients of a private clinic. Each responded differently to monoclonal antibodies (Mabs) 5H4 and 8B3 on staining, and hemagglutination inhibition and neutralizing tests. When the analysis of nucleotide sequences was undertaken, the identity of deduced amino acid sequences of the HA1 region was 94%, which suggested that they derived from different strains. They were termed 5H4-responding strains and 5H4-nonresponding strains, respectively. The analysis of laboratory-induced antigenic variants suggested that the amino acid at position 149 is important to the reactivity to 5H4. This residue was "Arg" in 5H4-responding strains and "Lys" in nonresponding strains. During the 1998-1999 season, a total of 100 influenza B virus strains were isolated and 5H4-responding strains were the major type (94 strains). In the 1999-2000 influenza season, only two influenza B virus strains were isolated. Neither responded to 5H4. However, analysis of the deduced amino acid sequences of the HA1 region suggested that one of the two strains was derived from the 5H4-responding strains of the previous season. The amino acid residue at position 149 was "Lys" in place of "Arg." These observations suggested that 5H4-nonresponding strains will increase in coming seasons.
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Affiliation(s)
- N Nakagawa
- Division of Virology, Department of Public Health, Osaka Prefectural Institute of Public Health, Nakamichi, Higashinari-ku, Osaka, Japan.
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43
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Li Y, Okuno Y, Zhang P, Radomska HS, Chen H, Iwasaki H, Akashi K, Klemsz MJ, McKercher SR, Maki RA, Tenen DG. Regulation of the PU.1 gene by distal elements. Blood 2001; 98:2958-65. [PMID: 11698277 DOI: 10.1182/blood.v98.10.2958] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The transcription factor PU.1 (also known as Spi-1) plays a critical role in the development of the myeloid lineages, and myeloid cells derived from PU.1(-/-) animals are blocked at the earliest stage of myeloid differentiation. Expression of the PU.1 gene is tightly regulated during normal hematopoietic development, and dysregulation of PU.1 expression can lead to erythroleukemia. However, relatively little is known about how the PU.1 gene is regulated in vivo. Here it is shown that myeloid cell type-specific expression of PU.1 in stable cell lines and transgenic animals is conferred by a 91-kilobase (kb) murine genomic DNA fragment that consists of the entire PU.1 gene (20 kb) plus approximately 35 kb of upstream and downstream sequences, respectively. To further map the important transcriptional regulatory elements, deoxyribonuclease I hypersensitive site mapping studies revealed at least 3 clusters in the PU.1 gene. A 3.5-kb fragment containing one of these deoxyribonuclease I hypersensitive sites, located -14 kb 5' of the transcriptional start site, conferred myeloid cell type-specific expression in stably transfected cell lines, suggesting that within this region is an element important for myeloid specific expression of PU.1. Further analysis of this myeloid-specific regulatory element will provide insight into the regulation of this key transcriptional regulator and may be useful as a tool for targeting expression to the myeloid lineage.
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Affiliation(s)
- Y Li
- Harvard Institutes of Medicine, Harvard Medical School, Boston, MA 02115, USA
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Yamazaki K, Okuno Y. [Genetic diagnosis and molecular epidemiological analyses of hand, foot and mouth disease which prevailed in Osaka Prefecture in 2000]. Kansenshogaku Zasshi 2001; 75:909-15. [PMID: 11766373 DOI: 10.11150/kansenshogakuzasshi1970.75.909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Direct rapid genetic diagnosis by RT-PCR as well as virus isolation was performed on the 122 patients with hand, foot and mouth disease (HFMD) in Osaka Prefecture in 2000, followed by molecular epidemiological analyses of the isolated viruses. MRC-5 cells showed the highest sensitivity for virus isolation, recovering 59 strains of viruses from 80 virus-positive patients. By RT-PCR using newly designed primers spanning VP4 and VP2, corresponding genome regions of coxsackievirus type A16 (CA16) and enterovirus 71 (EV71) isolates were amplified only with primers specific to respective viruses. On the other hand, none of the genomes of prototype enteroviruses of other 49 serotypes were detected with these primers. From the sequence analyses, all of the 22 isolates of CA16 belonged to the same genotype and 33 isolates of EV71 were classified into two genetic groups. The results showed that 3 different genotypes of viruses were prevailing in the epidemic of HFMD in Osaka Prefecture in 2000.
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Affiliation(s)
- K Yamazaki
- Osaka Prefectural Institute of Public Health
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Yokoyama T, Yokoyama S, Kamikado T, Okuno Y, Mashiko S. Selective assembly on a surface of supramolecular aggregates with controlled size and shape. Nature 2001; 413:619-21. [PMID: 11675782 DOI: 10.1038/35098059] [Citation(s) in RCA: 499] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The realization of molecule-based miniature devices with advanced functions requires the development of new and efficient approaches for combining molecular building blocks into desired functional structures, ideally with these structures supported on suitable substrates 1-4. Supramolecular aggregation occurs spontaneously and can lead to controlled structures if selective and directional non-covalent interactions are exploited. But such selective supramolecular assembly has yielded almost exclusively crystals or dissolved structures 5; the self-assembly of absorbed molecules into larger structures 6-8, in contrast, has not yet been directed by controlling selective intermolecular interactions. Here we report the formation of surface-supported supramolecular structures whose size and aggregation pattern are rationally controlled by tuning the non-covalent interactions between individual absorbed molecules. Using low-temperature scanning tunnelling microscopy, we show that substituted porphyrin molecules adsorbed on a gold surface form monomers, trimers, tetramers or extended wire-like structures. We find that each structure corresponds in a predictable fashion to the geometric and chemical nature of the porphyrin substituents that mediate the interactions between individual adsorbed molecules. Our findings suggest that careful placement of functional groups that are able to participate in directed non-covalent interactions will allow the rational design and construction of a wide range of supramolecular architectures absorbed to surfaces.
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Affiliation(s)
- T Yokoyama
- National Institute for Materials Science, Nagoya, Japan.
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46
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Abstract
The contribution of substrate binding to allosteric regulation in the ribozyme catalysis has been investigated using allosteric ribozymes consisting of the hammerhead ribozyme and a flavin mononucleotide (FMN) aptamer. Kinetic parameters were measured for various lengths of the substrates with a wide range of binding energy. The maximum cleavage rate of each ribozyme was retained with the long substrates. However, the cleavage rates largely decreased by the truncation of the substrates according to loss in the free energy of substrate binding. The high sensitivity to the substrate lengths is attributed to the increase in the energetic requirement for the catalytic core folding, which is caused by the incorporation of the aptamer region. One role of FMN binding is assisting the promotion of the core folding through the stabilization of the aptamer domain. The allosteric effect is significantly expressed only when the substrate binding energy is insufficient for the core folding of the ribozyme-substrate complex. This type of allosteric interaction dominates the substrate dependency of another type of regulation. These results demonstrate that an adequate correlation between the type of regulation and the substrate binding is responsible for the effective allosteric interaction in the kinetic process.
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Affiliation(s)
- M Araki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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Abstract
Mönckeberg's medial sclerosis (MMS) is one of the characteristic calcified lesions of uremic artery disease and often exhibits osseous metaplasia. Although its pathogenic mechanism is largely unknown, MMS may contain two different pathologic processes: degenerative process leading to apoptosis or necrosis of medial smooth muscle cells and osteogenic process leading to formation of bone-like structures. It has long been known that calcification follows necrosis. Apoptotic/necrotic cells often release matrix vesicles or membranous cellular degradation products resulting from disintegration of the cells that frequently serve as the nidus of calcification. On the other hand, vascular cells may exhibit osteoblastic phenotype in vitro, and some of the markers for osteoblastic differentiation and noncollagenous proteins regulating mineralization have been demonstrated in calcified arterial lesions. As a possible etiologic factor inducing these two responses, hyperphosphatemia among various metabolic disturbances recognized in uremia may play an important role in the development of MMS in uremia.
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Affiliation(s)
- A Shioi
- Department of Cardiovascular Medicine, Institute of Geriatrics and Medical Science, Osaka City University Graduate School of Medicine, Osaka, Japan.
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Taniwaki H, Shoji T, Emoto M, Kawagishi T, Ishimura E, Inaba M, Okuno Y, Nishizawa Y. Femoral artery wall thickness and stiffness in evaluation of peripheral vascular disease in type 2 diabetes mellitus. Atherosclerosis 2001; 158:207-14. [PMID: 11500193 DOI: 10.1016/s0021-9150(01)00414-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stiffening and thickening of arterial wall are two important components of atherosclerosis. The purpose of this study was to evaluate the effects of femoral artery wall stiffness on clinical manifestation of peripheral vascular disease (PVD) in type 2 diabetes mellitus. The subjects were 315 patients with type 2 diabetes. Presence of intermittent claudication and/or leg pain at rest and reduced ankle-brachial blood pressure index (ABI<0.9) were used as a subjective and an objective index of PVD, respectively. Femoral artery intima-media thickness (FA-IMT) and stiffness parameter beta (FA-stiffness beta) were measured by ultrasound methods. Symptomatic patients (N=58) showed greater values for both FA-IMT and FA-stiffness beta than those without symptom (N=257). Similarly, patients with reduced ABI (N=56) had greater FA-IMT and FA-stiffness beta than those without (N=259). However, correlation between FA-IMT and FA-stiffness beta was not impressive, especially in the symptomatic patients. To evaluate the effect of FA-stiffness beta on PVD symptoms, the subjects were divided into three subgroups according to FA-IMT, and then FA-stiffness beta was compared between those with and without PVD symptoms in each subgroup. The symptomatic patients had greater FA-stiffness beta values than the asymptomatic subjects in all the three subgroups. Multiple logistic regression analysis indicated that the presence of PVD symptoms was associated more closely with increased FA-stiffness beta than with increased FA-IMT, whereas reduced ABI was associated more closely with FA-IMT than with FA-stiffness beta. These data suggest that stiffening of arterial wall has a significant impact on PVD manifestations, particularly on the leg symptoms, in patients with type 2 diabetes.
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Affiliation(s)
- H Taniwaki
- Second Department of Internal Medicine, Osaka City University Medical School, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
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Waritani T, Okuno Y, Ashida Y, Tsuchiya R, Kobayashi K, Yamada T. Development and characterization of monoclonal antibodies against canine trypsin. Vet Immunol Immunopathol 2001; 80:333-8. [PMID: 11457485 DOI: 10.1016/s0165-2427(01)00293-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Canine cationic trypsin was purified by salting-out, gel filtration and affinity chromatography. Purity was confirmed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The molecular weight was ca. 28kDa by SDS-PAGE. Thirty hybridomas were obtained which produced mAb to canine cationic trypsin by the cell fusion technique. Twenty-two of these recognized cationic trypsin only, while eight hybridomas recognized both cationic and anionic trypsin. Several of the anti-canine cationic trypsin mAb were purified by salting-out and DEAE ion-change chromatography using ascites fluid of immunized BALB/c mice. The mAb proved to have very high specificity to canine cationic trypsin as shown by immunoblotting and it may be possible to use them to develop clinical assays.
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Affiliation(s)
- T Waritani
- Animal Health Products and Chemicals Division, Animal Health Products and Chemicals Research Section, Fuji Chemical Industries Ltd., 530 Chokeiji, Takaoka-shi, Toyama 933-8511, Japan
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Takatani T, Takaoka N, Tatsumi M, Kawamoto H, Okuno Y, Morita K, Masutani T, Murakawa K, Okamoto Y. A novel missense mutation in human lactate dehydrogenase B-subunit gene. Mol Genet Metab 2001; 73:344-8. [PMID: 11509017 DOI: 10.1006/mgme.2001.3203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Reduced activity of serum lactate dehydrogenase (LDH; EC 1.1.1.27) was found in a male medical student during practical examinations of his own blood. Serum LDH isoenzyme pattern showed reductions in activities of the isoenzymes with lower subunit A/B ratios such as LDH1 and LDH2. These findings were indicative of a partial LDH-B subunit deficiency, which was confirmed in erythrocyte hemolysates by Western blotting. Polymerase chain reaction (PCR)-based DNA sequence analysis of the LDH-B subunit gene revealed a heterozygous nucleotide change: a guanine to adenine substitution in codon 69 (GGG --> GAG) at the third exon of the LDH-B subunit gene that resulted in a glycine to glutamic acid substitution (G69E). The mutation was confirmed by PCR-restriction fragment length polymorphism (RFLP) analysis using a mismatched primer to introduce a new NcoI restriction site. The same heterozygous mutation was found in his mother but not in other family members. This mutation involves a residue belonging to alphaC helix in LDH-B subunit protein molecule that functions as an interface for other subunits.
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Affiliation(s)
- T Takatani
- Central Clinical Laboratory, Nara Medical University Hospital, Shijo-Cho 840, Kashihara, Nara 634-8522, Japan
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