1
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Yamada H, Uemura A, Miyasaka R. 8(R)-hydroxy-eicosapentaenoic acid (8R-HEPE) induces transcription of cholesterol efflux receptors via activation of liver X receptor in macrophages. Biosci Biotechnol Biochem 2023; 87:584-591. [PMID: 36881721 DOI: 10.1093/bbb/zbad025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/26/2023] [Indexed: 03/09/2023]
Abstract
Dyslipidemia is a risk factor for the development of atherosclerotic cardiovascular disease. 8-HEPE from North Pacific krill (Euphausia pacifica) is known to reduce plasma LDL cholesterol levels and increase plasma HDL cholesterol levels in LDL receptor knock-out mice fed a western diet. Moreover, 8-HEPE also reduces the area of aortic atherosclerosis in apoE knock-out mice fed the same diet. In this study, we examined the stereochemical specific activity of 8-HEPE for inducing expression of cholesterol efflux receptors (Abca1 and Abcg1) in J774.1 cells. Our findings show 8R-HEPE induces the expression of Abca1 and Abcg1 via activation of liver X receptor, whereas 8S-HEPE elicits no such activity. These results suggest that 8R-HEPE derived from North Pacific krill may have beneficial effects against dyslipidemia.
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Affiliation(s)
- Hidetoshi Yamada
- Faculty of Life & Environmental Science, Teikyo University of Science, Tokyo 120-0045, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Raimu Miyasaka
- Faculty of Life & Environmental Science, Teikyo University of Science, Tokyo 120-0045, Japan
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2
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Murayama Y, Uemura A, Kitazawa M, Toyotani J, Taniuchi A, Togawa T. Determination of Biphasic Menstrual Cycle Based on the Fluctuation of Abdominal Skin Temperature during Sleep. ABE 2023. [DOI: 10.14326/abe.12.28] [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: 02/04/2023] Open
Affiliation(s)
- Yoshinobu Murayama
- Department of Electrical and Electronics Engineering, College of Engineering, Nihon University
| | - Aiko Uemura
- College of Industrial Technology, Nihon University
| | | | - Jun Toyotani
- College of Industrial Technology, Nihon University
| | | | - Tatsuo Togawa
- Advanced Research Center for Human Sciences, Waseda University
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3
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Segawa T, Nishiyama C, Tamiru-Oli M, Sugihara Y, Abe A, Sone H, Itoh N, Asukai M, Uemura A, Oikawa K, Utsushi H, Ikegami-Katayama A, Imamura T, Mori M, Terauchi R, Takagi H. Sat-BSA: an NGS-based method using local de novo assembly of long reads for rapid identification of genomic structural variations associated with agronomic traits. Breed Sci 2021; 71:299-312. [PMID: 34776737 PMCID: PMC8573553 DOI: 10.1270/jsbbs.20148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/18/2021] [Indexed: 05/29/2023]
Abstract
Advances in next generation sequencing (NGS)-based methodologies have accelerated the identifications of simple genetic variants such as point mutations and small insertions/deletions (InDels). Structural variants (SVs) including large InDels and rearrangements provide vital sources of genetic diversity for plant breeding. However, their analysis remains a challenge due to their complex nature. Consequently, novel NGS-based approaches are needed to rapidly and accurately identify SVs. Here, we present an NGS-based bulked-segregant analysis (BSA) technique called Sat-BSA (SVs associated with traits) for identifying SVs controlling traits of interest in crops. Sat-BSA targets allele frequencies at all SNP positions to first identify candidate genomic regions associated with a trait, which is then reconstructed by long reads-based local de novo assembly. Finally, the association between SVs, RNA-seq-based gene expression patterns and trait is evaluated for multiple cultivars to narrow down the candidate genes. We applied Sat-BSA to segregating F2 progeny obtained from crosses between turnip cultivars with different tuber colors and successfully isolated two genes harboring SVs that are responsible for tuber phenotypes. The current study demonstrates the utility of Sat-BSA for the identification of SVs associated with traits of interest in species with large and heterozygous genomes.
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Affiliation(s)
- Tenta Segawa
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Chisato Nishiyama
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Muluneh Tamiru-Oli
- Department of Animal, Plant and Soil Sciences, AgriBio Building, La Trobe University, 5 Ring Road, Bundoora, VIC 3086, Australia
| | - Yu Sugihara
- Kyoto University, Nakajou 1, Mozume, Mukou, Kyoto 617-0001, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate 024-0003, Japan
| | - Hinako Sone
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Noriaki Itoh
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Mayu Asukai
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate 024-0003, Japan
| | - Kaori Oikawa
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate 024-0003, Japan
| | - Hiroe Utsushi
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate 024-0003, Japan
| | | | - Tomohiro Imamura
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Masashi Mori
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
| | - Ryohei Terauchi
- Kyoto University, Nakajou 1, Mozume, Mukou, Kyoto 617-0001, Japan
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate 024-0003, Japan
| | - Hiroki Takagi
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa 921-8836, Japan
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4
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Takeuchi A, Uemura A, Goya S, Shimada K, Yoshida T, Hara S, Sato K, Shiraishi K, Yairo A, Kto K, Matsuura K, Tanaka R. The utility of patent ductus arteriosus closure with hemostatic clip in dogs. Pol J Vet Sci 2021; 23:255-260. [PMID: 32627978 DOI: 10.24425/pjvs.2020.133640] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study investigated the utility of patent ductus arteriosus (PDA) closure with hemostatic clip by comparing with traditional PDA closure. Medical records of 51 dogs with surgical closure of PDA were reviewed and retrospective study was conducted. 29 dogs were treated by procedure with hemostatic clip (Group HC), and 22 dogs were treated by surgical ligation (Group SL). Data pertaining to breed, sex, age and body weight at the time of surgery, echocardiographic minimal ductal diameter, duration of surgery, hemostatic clip size, echocardiographic findings, hemor-rhage, residual ductal flow and recanalization were collected from records. The results showed that procedure with hemostatic clip had been selected in lighter dogs than traditional PDA closure. Duration of surgery performed only hemostatic clip technique was significantly shorter than that in group SL. Preoperative LVIDd, E-wave and FS were significantly lower than postoperative ones. As regard all parameters, the differences between pre- and postoperative periods were not significantly different between group HC and group SL. Hemorrhage, residual ductal flow, and recanalization were not significantly different in both groups. The present study showed that procedure with hemostatic clip is beneficial in that it is available in smaller dogs and can make shorter operation duration than traditional PDA closure. Moreover, the procedure is effective for the resolution of volume overload of the left atrium and ventricle in short-term outcome. Complications including hemorrhage, residual ductal flow and recanaliza-tion were not significantly different with both techniques.
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Affiliation(s)
- A Takeuchi
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - A Uemura
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan
| | - S Goya
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - K Shimada
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - T Yoshida
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - S Hara
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - K Sato
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - K Shiraishi
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - A Yairo
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - K Kto
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - K Matsuura
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
| | - R Tanaka
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, 183-8509, Japan
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Tanaka A, Kamiya S, Ozaki Y, Kameoka S, Kayano Y, Saikia S, Akano F, Uemura A, Takagi H, Terauchi R, Maruyama J, Hammadeh HH, Fleissner A, Scott B, Takemoto D. A nuclear protein NsiA from
Epichloë festucae
interacts with a MAP kinase MpkB and regulates the expression of genes required for symbiotic infection and hyphal cell fusion. Mol Microbiol 2020; 114:626-640. [DOI: 10.1111/mmi.14568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 06/20/2020] [Accepted: 06/29/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Aiko Tanaka
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
- School of Fundamental Sciences Massey University Palmerston North New Zealand
| | - Shota Kamiya
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
| | - Yoshino Ozaki
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
| | - Shinichi Kameoka
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
| | - Yuka Kayano
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
| | - Sanjay Saikia
- School of Fundamental Sciences Massey University Palmerston North New Zealand
| | - Fumitake Akano
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center Kitakami Japan
| | | | | | | | - Hamzeh Haj Hammadeh
- Institut für Genetik Technische Universität Braunschweig Braunschweig Germany
| | - André Fleissner
- Institut für Genetik Technische Universität Braunschweig Braunschweig Germany
| | - Barry Scott
- School of Fundamental Sciences Massey University Palmerston North New Zealand
| | - Daigo Takemoto
- Graduate School of Bioagricultural Sciences Nagoya University Nagoya Japan
- School of Fundamental Sciences Massey University Palmerston North New Zealand
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Yamada H, Kumagai K, Uemura A, Yuki S. Euphausia pacifica as a source of 8( R)-hydroxy-eicosapentaenoic acid (8 R-HEPE), 8( R)-hydroxy-eicosatetraenoic acid (8 R-HETE) and 10( R)-hydroxy-docosahexaenoic acid (10 R-HDHA). Biosci Biotechnol Biochem 2019; 84:455-462. [PMID: 31738665 DOI: 10.1080/09168451.2019.1691912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Although not fully investigated, 8-HEPE, 8-HETE, and 10-HDHA have potentially beneficial effects for human health. Euphausia pacifica (North Pacific krill) is unique in containing several ppm level of 8R-HEPE, and sub-ppm levels of 8R-HETE and 10R-HDHA. Obtaining sufficient quantities of these compounds is a major bottleneck for conducting in vivo experiments to evaluate their biological activities. In this study, we examined an efficient way of obtaining 8R-HEPE, 8R-HETE, and 10R-HDHA by enzymatic production in E. pacifica. We devised a novel method to purify 199.4 mg of 8R-HEPE, 2.1 mg of 8R-HETE and 5.6 mg of 10R-HDHA from 1 kg of E. pacifica. We identified the stereochemistry of the hydroxy group at C-8 of HEPE and HETE and C-10 of HDHA as the R configuration by chiral column chromatography analysis using LC/QTOFMS.Abbreviations: 8-HEPE: 8-hydroxy-eicosapentaenoic acid; 8-HETE: 8-hydroxy-eicosatetraenoic acid; 10-HDHA: 10-hydroxy-docosahexaenoic acid; EPA: eicosapentaenoic acid; TLC-FID, thin layer chromatograph-Flame Ionization Detector; LC/QTOFMS: liquid chromatography/hybrid quadrupole time of flight mass spectrometry.
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Affiliation(s)
| | | | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - Sayaka Yuki
- Iwate Biotechnology Research Center, Kitakami, Japan
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7
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Itoh N, Segawa T, Tamiru M, Abe A, Sakamoto S, Uemura A, Oikawa K, Kutsuzawa H, Koga H, Imamura T, Terauchi R, Takagi H. Next-generation sequencing-based bulked segregant analysis for QTL mapping in the heterozygous species Brassica rapa. Theor Appl Genet 2019; 132:2913-2925. [PMID: 31317235 DOI: 10.1007/s00122-019-03396-z] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 07/06/2019] [Indexed: 06/10/2023]
Abstract
An improved protocol of QTL-seq, an NGS-based method for bulked segregant analysis we previously developed in rice, allowed successful mapping of QTLs of interest in the highly heterozygous genome of B. rapa, demonstrating the power of this elegant method for genetic analyses in heterozygous species of economic importance. Recent advances in next-generation sequencing (NGS) and the various NGS-based methods developed for rapidly identifying candidate genes of interest have accelerated genetic analysis mainly in the model plants rice and Arabidopsis. Brassica rapa includes several economically important crops such as Chinese cabbage, turnip and various leafy vegetables. The application of NGS-based approaches for the analysis of B. rapa has been limited mainly due to its highly heterozygous genome and poor quality of the reference genome sequence currently available for this species. In this study, we have improved QTL-seq, a method for NGS-based bulked segregant analysis we previously developed in rice, extending its applicability for accelerating the genetic analysis and molecular breeding of B. rapa. Addition of new filters to the original QTL-seq pipeline allowed removal of spurious single-nucleotide polymorphisms caused by alignment/sequencing errors and variability between parents, significantly improving accuracy of the analysis. As proof of principle, we successfully applied the new approach to identify candidate genomic regions controlling flowering and trichome formation using segregating F2 progeny obtained from crosses made between cultivars of B. rapa showing contrasting phenotypes for these traits. We strongly believe that the improved QTL-seq method reported here will extend the applicability of NGS-based genetic analysis not only to B. rapa but also to other plant species of economic importance with heterozygous genomes.
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Affiliation(s)
- Noriaki Itoh
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Tenta Segawa
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Muluneh Tamiru
- Centre for AgriBioscience (AgriBio), La Trobe University, 5 Ring Road, Bundoora, VIC, 3086, Australia
| | - Akira Abe
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate, 024-0003, Japan
| | - Shota Sakamoto
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate, 024-0003, Japan
| | - Kaori Oikawa
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate, 024-0003, Japan
| | - Hiroto Kutsuzawa
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Hironori Koga
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Tomohiro Imamura
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, 22-174-4, Narita, Kitakami, Iwate, 024-0003, Japan
- Kyoto University, Nakajou 1, Mozume, Mukou, Kyoto, 617-0001, Japan
| | - Hiroki Takagi
- Ishikawa Prefectural University, 1-308, Suematsu, Nonoichi, Ishikawa, 921-8836, Japan.
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8
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Girma G, Natsume S, Carluccio AV, Takagi H, Matsumura H, Uemura A, Muranaka S, Takagi H, Stavolone L, Gedil M, Spillane C, Terauchi R, Tamiru M. Identification of candidate flowering and sex genes in white Guinea yam (D. rotundata Poir.) by SuperSAGE transcriptome profiling. PLoS One 2019; 14:e0216912. [PMID: 31545796 PMCID: PMC6756524 DOI: 10.1371/journal.pone.0216912] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 09/05/2019] [Indexed: 01/03/2023] Open
Abstract
Dioecy (distinct male and female individuals) and scarce to non-flowering are common features of cultivated yam (Dioscorea spp.). However, the molecular mechanisms underlying flowering and sex determination in Dioscorea are largely unknown. We conducted SuperSAGE transcriptome profiling of male, female and monoecious individuals to identify flowering and sex-related genes in white Guinea yam (D. rotundata), generating 20,236 unique tags. Of these, 13,901 were represented by a minimum of 10 tags. A total 88 tags were significantly differentially expressed in male, female and monoecious plants, of which 18 corresponded to genes previously implicated in flower development and sex determination in multiple plant species. We validated the SuperSAGE data with quantitative real-time PCR (qRT-PCR)-based analysis of the expression of three candidate genes. We further investigated the flowering patterns of 1938 D. rotundata accessions representing diverse geographical origins over two consecutive years. Over 85% of accessions were either male or non-flowering, less than 15% were female, while monoecious plants were rare. Intensity of flowering varied between male and female plants, with the former flowering more abundantly than the latter. Candidate genes identified in this study can be targeted for further validation and to induce regular flowering in poor to non-flowering cultivars. Findings of the study provide important inputs for further studies aiming to overcome the challenge of flowering in yams and to improve efficiency of yam breeding.
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Affiliation(s)
- Gezahegn Girma
- Bioscience center, International Institute of Tropical Agriculture (IITA), Ibadan, Oyo State, Nigeria
- Plant and AgriBiosciences Research Centre (PABC), Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Satoshi Natsume
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
| | - Anna Vittoria Carluccio
- Bioscience center, International Institute of Tropical Agriculture (IITA), Ibadan, Oyo State, Nigeria
| | - Hiroki Takagi
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
| | - Hideo Matsumura
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
| | - Aiko Uemura
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
| | - Satoru Muranaka
- Japan International Research Center for Agricultural Sciences (JIRCAS), Ohwashi, Tsukuba, Japan
- * E-mail:
| | - Hiroko Takagi
- Japan International Research Center for Agricultural Sciences (JIRCAS), Ohwashi, Tsukuba, Japan
| | - Livia Stavolone
- Bioscience center, International Institute of Tropical Agriculture (IITA), Ibadan, Oyo State, Nigeria
| | - Melaku Gedil
- Bioscience center, International Institute of Tropical Agriculture (IITA), Ibadan, Oyo State, Nigeria
| | - Charles Spillane
- Plant and AgriBiosciences Research Centre (PABC), Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Ryohei Terauchi
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
| | - Muluneh Tamiru
- Department of Genomics and Breeding, Iwate Biotechnology Research Center (IBRC), Kitakami, Iwate, Japan
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9
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Yamada H, Hakozaki M, Uemura A, Yamashita T. Effect of fatty acids on melanogenesis and tumor cell growth in melanoma cells. J Lipid Res 2019; 60:1491-1502. [PMID: 31345992 PMCID: PMC6718436 DOI: 10.1194/jlr.m090712] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 07/12/2019] [Indexed: 11/20/2022] Open
Abstract
Fatty acids have various physiological effects on melanoma. For example, palmitic acid (PA) increases melanin levels; linoleic acid and DHA decrease melanin levels; and DHA suppresses tumor growth. In this study, we focused on the relationship between the structure of fatty acids and their physiological effects in melanoma to examine the likely mechanisms of action. We showed that saturated fatty acids and PUFAs display opposing effects on melanin content in melanoma cells. Likewise, PA and EPA have opposing effects in terms of actin polymerization. Our findings suggest that PA and EPA change melanin content in melanoma to alter melanosome trafficking by modulating actin polymerization. Here, we also examined the mechanism of the anti-tumor effect of DHA. We found that DHA interacts with receptor for activated C kinase 1 and represses melanoma cell proliferation by suppressing protein kinase C signaling. Our results suggest a new mechanism to explain the physiological effects of fatty acids.
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Affiliation(s)
- Hidetoshi Yamada
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan.
| | - Mayuka Hakozaki
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
| | - Tetsuro Yamashita
- Department of Biological Chemistry and Food Sciences Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
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10
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Irieda H, Inoue Y, Mori M, Yamada K, Oshikawa Y, Saitoh H, Uemura A, Terauchi R, Kitakura S, Kosaka A, Singkaravanit-Ogawa S, Takano Y. Conserved fungal effector suppresses PAMP-triggered immunity by targeting plant immune kinases. Proc Natl Acad Sci U S A 2019; 116:496-505. [PMID: 30584105 PMCID: PMC6329965 DOI: 10.1073/pnas.1807297116] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [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] [Indexed: 01/10/2023] Open
Abstract
Plant pathogens have optimized their own effector sets to adapt to their hosts. However, certain effectors, regarded as core effectors, are conserved among various pathogens, and may therefore play an important and common role in pathogen virulence. We report here that the widely distributed fungal effector NIS1 targets host immune components that transmit signaling from pattern recognition receptors (PRRs) in plants. NIS1 from two Colletotrichum spp. suppressed the hypersensitive response and oxidative burst, both of which are induced by pathogen-derived molecules, in Nicotiana benthamianaMagnaporthe oryzae NIS1 also suppressed the two defense responses, although this pathogen likely acquired the NIS1 gene via horizontal transfer from Basidiomycota. Interestingly, the root endophyte Colletotrichum tofieldiae also possesses a NIS1 homolog that can suppress the oxidative burst in N. benthamiana We show that NIS1 of multiple pathogens commonly interacts with the PRR-associated kinases BAK1 and BIK1, thereby inhibiting their kinase activities and the BIK1-NADPH oxidase interaction. Furthermore, mutations in the NIS1-targeting proteins, i.e., BAK1 and BIK1, in Arabidopsis thaliana also resulted in reduced immunity to Colletotrichum fungi. Finally, M. oryzae lacking NIS1 displayed significantly reduced virulence on rice and barley, its hosts. Our study therefore reveals that a broad range of filamentous fungi maintain and utilize the core effector NIS1 to establish infection in their host plants and perhaps also beneficial interactions, by targeting conserved and central PRR-associated kinases that are also known to be targeted by bacterial effectors.
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Affiliation(s)
- Hiroki Irieda
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
- Academic Assembly, Institute of Agriculture, Shinshu University, Nagano 399-4598, Japan
| | - Yoshihiro Inoue
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Masashi Mori
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Ishikawa 921-8836, Japan
| | - Kohji Yamada
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
- Graduate School of Technology, Industrial and Social Sciences, Tokushima University, Tokushima 770-8513, Japan
| | - Yuu Oshikawa
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Ishikawa 921-8836, Japan
| | - Hiromasa Saitoh
- Department of Molecular Microbiology, Tokyo University of Agriculture, Tokyo 156-8502, Japan
- Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Ryohei Terauchi
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
- Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | - Saeko Kitakura
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Ayumi Kosaka
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | | | - Yoshitaka Takano
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan;
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11
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Abstract
Purpose Several calcium entry blockers have neuroprotective effects on cellular damage in the brain induced by ischemia. The purpose of this study was to determine whether nilvadipine (NID) crosses the blood–retinal barrier, and if so, whether it can then protect the photoreceptors against retinal ischemia-reperfusion injury. Methods Rats received an intramuscular injection of 1 mg/kg of NID and nifedipine (NIF), and the retinal and serum concentrations were measured. Ischemia was induced by raising the intraocular pressure for 45 minutes. Twenty-four hours after the reperfusion, the number of TUNEL positive cells and retinal ganglion cells (RGCs) were counted, and the thickness of the retina was measured. Results After 60 minutes, the concentration of NID, but not NIF, was higher in retina than in the serum. The number of TUNEL-positive cells was fewer and the reduction in the number of RGCs and the thickness of retina was less in the eyes that had received NID than controls. Conclusions The findings show that NID has high permeability to retina compared with NIF, which has less fat solubility than NID, and neuroprotective effect to retinal cells. NID might be useful for the treatment of glaucoma or other retinal diseases that have some relation to apoptosis.
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Affiliation(s)
- A. Uemura
- Department of Ophthalmology, International Medical Center of Japan, Tokyo
| | - A. Mizota
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu - Japan
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12
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Yoshitsu Y, Takakusagi M, Abe A, Takagi H, Uemura A, Yaegashi H, Terauchi R, Takahata Y, Hatakeyama K, Yokoi S. QTL-seq analysis identifies two genomic regions determining the heading date of foxtail millet, Setaria italica (L.) P.Beauv. Breed Sci 2017; 67:518-527. [PMID: 29398946 PMCID: PMC5790050 DOI: 10.1270/jsbbs.17061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/30/2017] [Indexed: 05/29/2023]
Abstract
Heading date is an important event to ensure successful seed production. Although foxtail millet (Setaria italica (L.) P.Beauv.) is an important foodstuff in semiarid regions around the world, the genetic basis determining heading date is unclear. To identify genomic regions regulating days to heading (DTH), we conducted a QTL-seq analysis based on combining whole-genome re-sequencing and bulked-segregant analysis of an F2 population derived from crosses between the middle-heading cultivar Shinanotsubuhime and the early-heading cultivar Yuikogane. Under field conditions, transgressive segregation of DTH toward late heading was observed in the F2 population. We made three types of bulk samples: Y-bulk (early-heading), S-bulk (late-heading) and L-bulk (extremely late-heading). By genome-wide comparison of SNPs in the Y-bulk vs. the S-bulk and the Y-bulk vs. the L-bulk, we identified two QTLs associated with DTH. The first QTL, qDTH2, was detected on chromosome 2 from the Y-bulk and S-bulk comparison. The second QTL, qDTH7, was detected on chromosome 7 from the Y-bulk and L-bulk comparison. The Shinanotsubuhime allele for qDTH2 caused late heading in the F2 population, whereas the Yuikogane allele for qDTH7 led to extremely late heading. These results suggest that allelic differences in both qDTH2 and qDTH7 determine regional adaptability in S. italica.
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Affiliation(s)
- Yuki Yoshitsu
- Faculty of Agriculture, Iwate University,
Morioka, Iwate 020-8550,
Japan
| | - Masato Takakusagi
- Kenpoku Agricultural Research Institute, Iwate Agricultural Research Center,
Karumai, Iwate 028-6222,
Japan
| | - Akira Abe
- Iwate Biotechnology Research Center,
Kitakami, Iwate 024-0003,
Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center,
Kitakami, Iwate 024-0003,
Japan
- Ishikawa Prefectural University,
Nonoichi, Ishikawa 921-8836,
Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center,
Kitakami, Iwate 024-0003,
Japan
| | - Hiroki Yaegashi
- Iwate Biotechnology Research Center,
Kitakami, Iwate 024-0003,
Japan
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center,
Kitakami, Iwate 024-0003,
Japan
| | - Yoshihito Takahata
- Faculty of Agriculture, Iwate University,
Morioka, Iwate 020-8550,
Japan
| | | | - Shuji Yokoi
- Faculty of Agriculture, Iwate University,
Morioka, Iwate 020-8550,
Japan
- Graduate School of Life and Environmental Science, Osaka Prefecture University,
Sakai, Osaka 599-8531,
Japan
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13
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Tamiru M, Natsume S, Takagi H, White B, Yaegashi H, Shimizu M, Yoshida K, Uemura A, Oikawa K, Abe A, Urasaki N, Matsumura H, Babil P, Yamanaka S, Matsumoto R, Muranaka S, Girma G, Lopez-Montes A, Gedil M, Bhattacharjee R, Abberton M, Kumar PL, Rabbi I, Tsujimura M, Terachi T, Haerty W, Corpas M, Kamoun S, Kahl G, Takagi H, Asiedu R, Terauchi R. Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination. BMC Biol 2017; 15:86. [PMID: 28927400 PMCID: PMC5604175 DOI: 10.1186/s12915-017-0419-x] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 08/10/2017] [Indexed: 11/10/2022] Open
Abstract
Background Root and tuber crops are a major food source in tropical Africa. Among these crops are several species in the monocotyledonous genus Dioscorea collectively known as yam, a staple tuber crop that contributes enormously to the subsistence and socio-cultural lives of millions of people, principally in West and Central Africa. Yam cultivation is constrained by several factors, and yam can be considered a neglected “orphan” crop that would benefit from crop improvement efforts. However, the lack of genetic and genomic tools has impeded the improvement of this staple crop. Results To accelerate marker-assisted breeding of yam, we performed genome analysis of white Guinea yam (Dioscorea rotundata) and assembled a 594-Mb genome, 76.4% of which was distributed among 21 linkage groups. In total, we predicted 26,198 genes. Phylogenetic analyses with 2381 conserved genes revealed that Dioscorea is a unique lineage of monocotyledons distinct from the Poales (rice), Arecales (palm), and Zingiberales (banana). The entire Dioscorea genus is characterized by the occurrence of separate male and female plants (dioecy), a feature that has limited efficient yam breeding. To infer the genetics of sex determination, we performed whole-genome resequencing of bulked segregants (quantitative trait locus sequencing [QTL-seq]) in F1 progeny segregating for male and female plants and identified a genomic region associated with female heterogametic (male = ZZ, female = ZW) sex determination. We further delineated the W locus and used it to develop a molecular marker for sex identification of Guinea yam plants at the seedling stage. Conclusions Guinea yam belongs to a unique and highly differentiated clade of monocotyledons. The genome analyses and sex-linked marker development performed in this study should greatly accelerate marker-assisted breeding of Guinea yam. In addition, our QTL-seq approach can be utilized in genetic studies of other outcrossing crops and organisms with highly heterozygous genomes. Genomic analysis of orphan crops such as yam promotes efforts to improve food security and the sustainability of tropical agriculture. Electronic supplementary material The online version of this article (doi:10.1186/s12915-017-0419-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | - Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Japan
| | | | | | | | | | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - Kaori Oikawa
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, Kitakami, Japan
| | | | | | | | - Shinsuke Yamanaka
- Japan International Research Center for Agricultural Sciences, Tsukuba, Japan
| | - Ryo Matsumoto
- Japan International Research Center for Agricultural Sciences, Tsukuba, Japan
| | - Satoru Muranaka
- Japan International Research Center for Agricultural Sciences, Tsukuba, Japan
| | - Gezahegn Girma
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | | | - Melaku Gedil
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | | | - Michael Abberton
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | - P Lava Kumar
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | - Ismail Rabbi
- International Institute of Tropical Agriculture, Ibadan, Nigeria
| | | | | | | | | | | | | | - Hiroko Takagi
- Japan International Research Center for Agricultural Sciences, Tsukuba, Japan.
| | - Robert Asiedu
- International Institute of Tropical Agriculture, Ibadan, Nigeria.
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Japan. .,Kyoto University, Kyoto, Japan.
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14
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Urasaki N, Takagi H, Natsume S, Uemura A, Taniai N, Miyagi N, Fukushima M, Suzuki S, Tarora K, Tamaki M, Sakamoto M, Terauchi R, Matsumura H. Draft genome sequence of bitter gourd (Momordica charantia), a vegetable and medicinal plant in tropical and subtropical regions. DNA Res 2017; 24:51-58. [PMID: 28028039 PMCID: PMC5381343 DOI: 10.1093/dnares/dsw047] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 10/09/2016] [Indexed: 12/27/2022] Open
Abstract
Bitter gourd (Momordica charantia) is an important vegetable and medicinal plant in tropical and subtropical regions globally. In this study, the draft genome sequence of a monoecious bitter gourd inbred line, OHB3-1, was analyzed. Through Illumina sequencing and de novo assembly, scaffolds of 285.5 Mb in length were generated, corresponding to ∼84% of the estimated genome size of bitter gourd (339 Mb). In this draft genome sequence, 45,859 protein-coding gene loci were identified, and transposable elements accounted for 15.3% of the whole genome. According to synteny mapping and phylogenetic analysis of conserved genes, bitter gourd was more related to watermelon (Citrullus lanatus) than to cucumber (Cucumis sativus) or melon (C. melo). Using RAD-seq analysis, 1507 marker loci were genotyped in an F2 progeny of two bitter gourd lines, resulting in an improved linkage map, comprising 11 linkage groups. By anchoring RAD tag markers, 255 scaffolds were assigned to the linkage map. Comparative analysis of genome sequences and predicted genes determined that putative trypsin-inhibitor and ribosome-inactivating genes were distinctive in the bitter gourd genome. These genes could characterize the bitter gourd as a medicinal plant.
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Affiliation(s)
- Naoya Urasaki
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
| | - Satoshi Natsume
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
| | - Naoki Taniai
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | - Norimichi Miyagi
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | | | | | - Kazuhiko Tarora
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | - Moritoshi Tamaki
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | - Moriaki Sakamoto
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa 901-0336, Japan
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Iwate 024-0003, Japan
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15
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Moritani N, Yoshioka Y, Yamachika E, Matsui Y, Tabata M, Ikeda A, Uemura A, Nakatsuji K, Matsumura T, Iida S. A familial case of cleidocranial dysplasia with a frameshift mutation in the Runt-related transcription factor 2 gene. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Tamiru M, Takagi H, Abe A, Yokota T, Kanzaki H, Okamoto H, Saitoh H, Takahashi H, Fujisaki K, Oikawa K, Uemura A, Natsume S, Jikumaru Y, Matsuura H, Umemura K, Terry MJ, Terauchi R. A chloroplast-localized protein LESION AND LAMINA BENDING affects defence and growth responses in rice. New Phytol 2016; 210:1282-97. [PMID: 26864209 DOI: 10.1111/nph.13864] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 12/11/2015] [Indexed: 05/27/2023]
Abstract
Understanding how plants allocate their resources to growth or defence is of long-term importance to the development of new and improved varieties of different crops. Using molecular genetics, plant physiology, hormone analysis and Next-Generation Sequencing (NGS)-based transcript profiling, we have isolated and characterized the rice (Oryza sativa) LESION AND LAMINA BENDING (LLB) gene that encodes a chloroplast-targeted putative leucine carboxyl methyltransferase. Loss of LLB function results in reduced growth and yield, hypersensitive response (HR)-like lesions, accumulation of the antimicrobial compounds momilactones and phytocassanes, and constitutive expression of pathogenesis-related genes. Consistent with these defence-associated responses, llb shows enhanced resistance to rice blast (Magnaporthe oryzae) and bacterial blight (Xanthomonas oryzae pv. oryzae). The lesion and resistance phenotypes are likely to be caused by the over-accumulation of jasmonates (JAs) in the llb mutant including the JA precursor 12-oxo-phytodienoic acid. Additionally, llb shows an increased lamina inclination and enhanced early seedling growth due to elevated brassinosteroid (BR) synthesis and/or signalling. These findings show that LLB functions in the chloroplast to either directly or indirectly repress both JA- and BR-mediated responses, revealing a possible mechanism for controlling how plants allocate resources for defence and growth.
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Affiliation(s)
- Muluneh Tamiru
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | - Takao Yokota
- Department of Biosciences, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | | | - Haruko Okamoto
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Iwate Medical University, Iwate, 028-3694, Japan
| | | | | | - Koki Fujisaki
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | - Kaori Oikawa
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Iwate, 024-003, Japan
| | | | - Yusuke Jikumaru
- Department of Biosciences, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | - Hideyuki Matsuura
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan
| | - Kenji Umemura
- Agricultural and Veterinary Research Laboratories, Meiji Seika Pharma Co., Ltd, Kohoku-ku, Yokohama, 222-8567, Japan
| | - Matthew J Terry
- Centre for Biological Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
- Institute for Life Sciences, University of Southampton, Highfield Campus, Southampton, SO17 1BJ, UK
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17
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Kitao M, Hida T, Eguchi N, Tobita H, Utsugi H, Uemura A, Kitaoka S, Koike T. Light compensation points in shade-grown seedlings of deciduous broadleaf tree species with different successional traits raised under elevated CO2. Plant Biol (Stuttg) 2016. [PMID: 26404633 DOI: 10.1046/j.1365-3040.2000.00528.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We measured leaf photosynthetic traits in shade-grown seedlings of four tree species native to northern Japan, raised under an elevated CO2 condition, to investigate the effects of elevated CO2 on shade tolerance of deciduous broadleaf tree species with different successional traits. We considered Betula platyphylla var. japonica and Betula maximowicziana as pioneer species, Quercus mongolica var. crispula as a mid-successional species, and Acer mono as a climax species. The plants were grown under shade conditions (10% of full sunlight) in a CO2 -regulated phytotron. Light compensation points (LCPs) decreased in all tree species when grown under elevated CO2 (720 μmol·mol(-1) ), which were accompanied by higher apparent quantum yields but no photosynthetic down-regulation. LCPs in Q. mongolica and A. mono grown under elevated CO2 were lower than those in the two pioneer birch species. The LCP in Q. mongolica seedlings was not different from that of A. mono in each CO2 treatment. However, lower dark respiration rates were observed in A. mono than in Q. mongolica, suggesting higher shade tolerance in A. mono as a climax species in relation to carbon loss at night. Thus, elevated CO2 may have enhanced shade tolerance by lowering LCPs in all species, but the ranking of shade tolerance related to successional traits did not change among species under elevated CO2 , i.e. the highest shade tolerance was observed in the climax species (A. mono), followed by a gap-dependent species (Q. mongolica), while lower shade tolerance was observed in the pioneer species (B. platyphylla and B. maximowicziana).
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Affiliation(s)
- M Kitao
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - T Hida
- Department of Forest Science, Hokkaido University, Sapporo, Japan
| | - N Eguchi
- Department of Forest Science, Hokkaido University, Sapporo, Japan
| | - H Tobita
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - H Utsugi
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - A Uemura
- Hokkaido Research Center, Forestry and Forest Products Research Institute, Sapporo, Japan
| | - S Kitaoka
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - T Koike
- Department of Forest Science, Hokkaido University, Sapporo, Japan
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18
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Kitao M, Hida T, Eguchi N, Tobita H, Utsugi H, Uemura A, Kitaoka S, Koike T. Light compensation points in shade-grown seedlings of deciduous broadleaf tree species with different successional traits raised under elevated CO2. Plant Biol (Stuttg) 2016; 18 Suppl 1:22-7. [PMID: 26404633 DOI: 10.1111/plb.12400] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/17/2015] [Indexed: 05/06/2023]
Abstract
We measured leaf photosynthetic traits in shade-grown seedlings of four tree species native to northern Japan, raised under an elevated CO2 condition, to investigate the effects of elevated CO2 on shade tolerance of deciduous broadleaf tree species with different successional traits. We considered Betula platyphylla var. japonica and Betula maximowicziana as pioneer species, Quercus mongolica var. crispula as a mid-successional species, and Acer mono as a climax species. The plants were grown under shade conditions (10% of full sunlight) in a CO2 -regulated phytotron. Light compensation points (LCPs) decreased in all tree species when grown under elevated CO2 (720 μmol·mol(-1) ), which were accompanied by higher apparent quantum yields but no photosynthetic down-regulation. LCPs in Q. mongolica and A. mono grown under elevated CO2 were lower than those in the two pioneer birch species. The LCP in Q. mongolica seedlings was not different from that of A. mono in each CO2 treatment. However, lower dark respiration rates were observed in A. mono than in Q. mongolica, suggesting higher shade tolerance in A. mono as a climax species in relation to carbon loss at night. Thus, elevated CO2 may have enhanced shade tolerance by lowering LCPs in all species, but the ranking of shade tolerance related to successional traits did not change among species under elevated CO2 , i.e. the highest shade tolerance was observed in the climax species (A. mono), followed by a gap-dependent species (Q. mongolica), while lower shade tolerance was observed in the pioneer species (B. platyphylla and B. maximowicziana).
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Affiliation(s)
- M Kitao
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - T Hida
- Department of Forest Science, Hokkaido University, Sapporo, Japan
| | - N Eguchi
- Department of Forest Science, Hokkaido University, Sapporo, Japan
| | - H Tobita
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - H Utsugi
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - A Uemura
- Hokkaido Research Center, Forestry and Forest Products Research Institute, Sapporo, Japan
| | - S Kitaoka
- Department of Plant Ecology, Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - T Koike
- Department of Forest Science, Hokkaido University, Sapporo, Japan
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19
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Moritani N, Matsumura T, Yamachika E, Goda Y, Uemura A, Nakata N, Tamura S, Yoshioka Y, Iida S. A novel guide device of the osteotomy line for intraoral vertical ramus osteotomy. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.248] [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: 11/28/2022]
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20
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Maqbool A, Saitoh H, Franceschetti M, Stevenson CEM, Uemura A, Kanzaki H, Kamoun S, Terauchi R, Banfield MJ. Structural basis of pathogen recognition by an integrated HMA domain in a plant NLR immune receptor. eLife 2015; 4:e08709. [PMID: 26304198 PMCID: PMC4547098 DOI: 10.7554/elife.08709] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 07/24/2015] [Indexed: 12/31/2022] Open
Abstract
Plants have evolved intracellular immune receptors to detect pathogen proteins known as effectors. How these immune receptors detect effectors remains poorly understood. Here we describe the structural basis for direct recognition of AVR-Pik, an effector from the rice blast pathogen, by the rice intracellular NLR immune receptor Pik. AVR-PikD binds a dimer of the Pikp-1 HMA integrated domain with nanomolar affinity. The crystal structure of the Pikp-HMA/AVR-PikD complex enabled design of mutations to alter protein interaction in yeast and in vitro, and perturb effector-mediated response both in a rice cultivar containing Pikp and upon expression of AVR-PikD and Pikp in the model plant Nicotiana benthamiana. These data reveal the molecular details of a recognition event, mediated by a novel integrated domain in an NLR, which initiates a plant immune response and resistance to rice blast disease. Such studies underpin novel opportunities for engineering disease resistance to plant pathogens in staple food crops.
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Affiliation(s)
- A Maqbool
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
| | - H Saitoh
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - M Franceschetti
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
| | - CEM Stevenson
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
| | - A Uemura
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - H Kanzaki
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - S Kamoun
- The Sainsbury Laboratory, Norwich, United Kingdom
| | - R Terauchi
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - MJ Banfield
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
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21
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Tamiru M, Undan JR, Takagi H, Abe A, Yoshida K, Undan JQ, Natsume S, Uemura A, Saitoh H, Matsumura H, Urasaki N, Yokota T, Terauchi R. A cytochrome P450, OsDSS1, is involved in growth and drought stress responses in rice (Oryza sativa L.). Plant Mol Biol 2015; 88:85-99. [PMID: 25800365 DOI: 10.1007/s11103-015-0310-5] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 03/16/2015] [Indexed: 05/05/2023]
Abstract
Cytochrome P450s are among the largest protein coding gene families in plant genomes. However, majority of the genes remain uncharacterized. Here, we report the characterization of dss1, a rice mutant showing dwarfism and reduced grain size. The dss1 phenotype is caused by a non-synonymous point mutation we identified in DSS1, which is member of a P450 gene cluster located on rice chromosome 3 and corresponds to the previously reported CYP96B4/SD37 gene. Phenotypes of several dwarf mutants characterized in rice are associated with defects in the biosynthesis or perception of the phytohormones gibberellins (GAs) and brassinosteroids (BRs). However, both GA and BR failed to rescue the dss1 phenotype. Hormone profiling revealed the accumulation of abscisic acid (ABA) and ABA metabolites, as well as significant reductions in GA19 and GA53 levels, precursors of the bioactive GA1, in the mutant. The dss1 contents of cytokinin and auxins were not significantly different from wild-type plants. Consistent with the accumulation of ABA and metabolites, germination and early growth was delayed in dss1, which also exhibited an enhanced tolerance to drought. Additionally, expressions of members of the DSS1/CYP96B gene cluster were regulated by drought stress and exogenous ABA. RNA-seq-based transcriptome profiling revealed, among others, that cell wall-related genes and genes involved in lipid metabolism were up- and down-regulated in dss1, respectively. Taken together, these findings suggest that DSS1 mediates growth and stress responses in rice by fine-tuning GA-to-ABA balance, and might as well play a role in lipid metabolism.
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Affiliation(s)
- Muluneh Tamiru
- Iwate Biotechnology Research Center, 22-174-4 Narita, Kitakami, Iwate, 024-0003, Japan,
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22
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Matsukawa H, Fujii M, Uemura A, Suzuki K, Yamamoto D, Takahashi O, Niimi Y. Pathology of embolic debris in carotid artery stenting. Acta Neurol Scand 2015; 131:197-202. [PMID: 25312877 DOI: 10.1111/ane.12303] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND The relationship between magnetic resonance (MR) plaque imaging and the pathology of distal embolic debris is unknown. We aimed to evaluate the relationship between the pathology of embolic debris in the embolic filter during carotid artery stenting (CAS), MR plaque imaging, and new ischemic lesions on diffusion-weighted imaging (DWI). METHOD We prospectively reviewed the 36 patients who underwent CAS using a filter-type embolic protection device. Pathology of debris was categorized into thrombosis, inflammatory cells, elastic fiber, and calcification. We compared the clinical parameters, MR plaque imaging, and pathological characteristics of the embolic debris retained in the filter during CAS on univariate analysis. RESULTS Eleven patients had and 25 patients did not have new lesion on DWI. All of DWI-high lesions were identified in affected side middle cerebral artery territory. Embolic debris was microscopically confirmed in 28 patients (78%); thrombosis in 11 (31%), inflammatory cells in 13 (36%), elastic fiber in 12 (33%), and calcification in 9 (25%). Proportion of asymptomatic carotid stenosis, intra-operative bradycardia/hypotension, and inflammatory cells of debris were significantly higher in patients with new DWI-high lesions. There was no significant relationship between the pathological characteristics and MR plaque imaging of distal embolic debris. CONCLUSIONS Our study showed that new DWI-high lesions might be influenced by types of debris in the filter. The need for future studies specifically examine the association of pathology of debris and findings of MR plaque imaging with new DWI-high lesions during CAS is emphasized.
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Affiliation(s)
- H. Matsukawa
- Department of Neurosurgery; St. Luke's International Hospital; Tokyo Japan
| | - M. Fujii
- Department of Neurosurgery; St. Luke's International Hospital; Tokyo Japan
| | - A. Uemura
- Department of Neuroendovascular Therapy; St. Luke's International Hospital; Tokyo Japan
| | - K. Suzuki
- Department of Pathology; St. Luke's International Hospital; Tokyo Japan
| | - D. Yamamoto
- Department of Neurosurgery; St. Luke's International Hospital; Tokyo Japan
| | - O. Takahashi
- Division of General Internal Medicine; Department of Medicine; St. Luke's International Hospital; Tokyo Japan
| | - Y. Niimi
- Department of Neuroendovascular Therapy; St. Luke's International Hospital; Tokyo Japan
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23
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Takagi H, Tamiru M, Abe A, Yoshida K, Uemura A, Yaegashi H, Obara T, Oikawa K, Utsushi H, Kanzaki E, Mitsuoka C, Natsume S, Kosugi S, Kanzaki H, Matsumura H, Urasaki N, Kamoun S, Terauchi R. MutMap accelerates breeding of a salt-tolerant rice cultivar. Nat Biotechnol 2015; 33:445-9. [PMID: 25798936 DOI: 10.1038/nbt.3188] [Citation(s) in RCA: 157] [Impact Index Per Article: 17.4] [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)
- Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Muluneh Tamiru
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Kentaro Yoshida
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | - Tsutomu Obara
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Kaori Oikawa
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Hiroe Utsushi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Eiko Kanzaki
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | | | | | | | - Hideo Matsumura
- Gene Research Center, Shinshu University, Ueda, Nagano, Japan
| | - Naoya Urasaki
- Okinawa Prefectural Agricultural Research Center, Itoman, Okinawa, Japan
| | - Sophien Kamoun
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
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24
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Natsume S, Takagi H, Shiraishi A, Murata J, Toyonaga H, Patzak J, Takagi M, Yaegashi H, Uemura A, Mitsuoka C, Yoshida K, Krofta K, Satake H, Terauchi R, Ono E. The Draft Genome of Hop (Humulus lupulus), an Essence for Brewing. Plant Cell Physiol 2015; 56:428-41. [PMID: 25416290 DOI: 10.1093/pcp/pcu169] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The female flower of hop (Humulus lupulus var. lupulus) is an essential ingredient that gives characteristic aroma, bitterness and durability/stability to beer. However, the molecular genetic basis for identifying DNA markers in hop for breeding and to study its domestication has been poorly established. Here, we provide draft genomes for two hop cultivars [cv. Saazer (SZ) and cv. Shinshu Wase (SW)] and a Japanese wild hop [H. lupulus var. cordifolius; also known as Karahanasou (KR)]. Sequencing and de novo assembly of genomic DNA from heterozygous SW plants generated scaffolds with a total size of 2.05 Gb, corresponding to approximately 80% of the estimated genome size of hop (2.57 Gb). The scaffolds contained 41,228 putative protein-encoding genes. The genome sequences for SZ and KR were constructed by aligning their short sequence reads to the SW reference genome and then replacing the nucleotides at single nucleotide polymorphism (SNP) sites. De novo RNA sequencing (RNA-Seq) analysis of SW revealed the developmental regulation of genes involved in specialized metabolic processes that impact taste and flavor in beer. Application of a novel bioinformatics tool, phylogenetic comparative RNA-Seq (PCP-Seq), which is based on read depth of genomic DNAs and RNAs, enabled the identification of genes related to the biosynthesis of aromas and flavors that are enriched in SW compared to KR. Our results not only suggest the significance of historical human selection process for enhancing aroma and bitterness biosyntheses in hop cultivars, but also serve as crucial information for breeding varieties with high quality and yield.
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Affiliation(s)
- Satoshi Natsume
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Akira Shiraishi
- Bioorganic Research Institute, Suntory Foundation for Life Sciences (SUNBOR), 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka, 618-8503 Japan
| | - Jun Murata
- Bioorganic Research Institute, Suntory Foundation for Life Sciences (SUNBOR), 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka, 618-8503 Japan
| | - Hiromi Toyonaga
- Research Institute, Suntory Global Innovation Center (SIC) Ltd., 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka, 618-8503 Japan
| | - Josef Patzak
- Hop Research Institute Co., Ltd., 438-01 Zatec, Kadanska 2525, Czech Republic
| | - Motoshige Takagi
- Technology Development Department, Suntory System Technology (SST) Ltd., 2-1-5, Dojima, Kita-ku, Osaka, 530-8204 Japan
| | - Hiroki Yaegashi
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Chikako Mitsuoka
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Kentaro Yoshida
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Karel Krofta
- Hop Research Institute Co., Ltd., 438-01 Zatec, Kadanska 2525, Czech Republic
| | - Honoo Satake
- Bioorganic Research Institute, Suntory Foundation for Life Sciences (SUNBOR), 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka, 618-8503 Japan
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center (IBRC), 174-4, Narita 22, Kitakami, Iwate, 024-0003 Japan
| | - Eiichiro Ono
- Research Institute, Suntory Global Innovation Center (SIC) Ltd., 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka, 618-8503 Japan
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25
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Matsukawa H, Shinoda M, Fujii M, Uemura A, Takahashi O, Niimi Y. Arterial stiffness as a risk factor for cerebral aneurysm. Acta Neurol Scand 2014; 130:394-9. [PMID: 25214208 DOI: 10.1111/ane.12286] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVES A low ankle-brachial index (ABI) is associated with increased mortality and risk of myocardial infarction and stroke in the general population. Arterial stiffness can be assessed non-invasively by the measurement of brachial-ankle pulse wave velocity (PWV), a simple and reproducible method. Because the importance of ABI and baPWV in the pathogenesis of cerebral aneurysms remains uncertain, we aimed to measure ABI and baPWV in patients with intracranial saccular and dissecting aneurysms to clarify whether these aneurysms are associated with arterial stiffness and atherosclerosis. MATERIALS AND METHODS We prospectively investigated 78 patients diagnosed with intracranial saccular (n = 66) and dissecting (n = 12) aneurysms. The control group consisted of an age- and gender-matched normal population. We compared the clinical characteristics in patients with intracranial saccular aneurysms and controls, those with intracranial dissecting aneurysms and controls, and those who had cerebral aneurysms with and without subarachnoid hemorrhage. We also compared ABI and baPWV among saccular aneurysm locations and evaluated the correlation between the number of saccular aneurysms and ABI and baPWV. RESULTS Multivariate logistic regression analysis shows that hypertension and higher baPWV (>1400 cm/s) are significantly associated with saccular aneurysms. Simple regression analysis revealed no correlation between the number of saccular aneurysms and ABI (r = -0.064, P = 0.611), and baPWV (r = 0.007, P = 0.956). CONCLUSIONS The baPWV was associated with intracranial saccular aneurysms even after adjustment of hypertension and smoking. Assessment of the baPWV may aid the evaluation of the intracranial saccular aneurysm and the development of strategies for screening patients with intracranial saccular aneurysms.
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Affiliation(s)
- H. Matsukawa
- Department of Neurosurgery; St. Luke's International Hospital; Chuo-ku Tokyo Japan
| | - M. Shinoda
- Department of Neurosurgery; St. Luke's International Hospital; Chuo-ku Tokyo Japan
| | - M. Fujii
- Department of Neurosurgery; St. Luke's International Hospital; Chuo-ku Tokyo Japan
| | - A. Uemura
- Department of Neuroendovascular Therapy; St. Luke's International Hospital; Chuo-ku Tokyo Japan
| | - O. Takahashi
- Division of General Internal Medicine; Department of Medicine; St. Luke's International Hospital; Chuo-ku Tokyo Japan
| | - Y. Niimi
- Department of Neuroendovascular Therapy; St. Luke's International Hospital; Chuo-ku Tokyo Japan
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26
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Irieda H, Maeda H, Akiyama K, Hagiwara A, Saitoh H, Uemura A, Terauchi R, Takano Y. Colletotrichum orbiculare Secretes Virulence Effectors to a Biotrophic Interface at the Primary Hyphal Neck via Exocytosis Coupled with SEC22-Mediated Traffic. Plant Cell 2014; 26:2265-2281. [PMID: 24850852 PMCID: PMC4079382 DOI: 10.1105/tpc.113.120600] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Revised: 04/20/2014] [Accepted: 05/02/2014] [Indexed: 05/18/2023]
Abstract
The hemibiotrophic pathogen Colletotrichum orbiculare develops biotrophic hyphae inside cucumber (Cucumis sativus) cells via appressorial penetration; later, the pathogen switches to necrotrophy. C. orbiculare also expresses specific effectors at different stages. Here, we found that virulence-related effectors of C. orbiculare accumulate in a pathogen-host biotrophic interface. Fluorescence-tagged effectors accumulated in a ring-like region around the neck of the biotrophic primary hyphae. Fluorescence imaging of cellular components and transmission electron microscopy showed that the ring-like signals of the effectors localized at the pathogen-plant interface. Effector accumulation at the interface required induction of its expression during the early biotrophic phase, suggesting that transcriptional regulation may link to effector localization. We also investigated the route of effector secretion to the interface. An exocytosis-related component, the Rab GTPase SEC4, localized to the necks of biotrophic primary hyphae adjacent to the interface, thereby suggesting focal effector secretion. Disruption of SEC4 in C. orbiculare reduced virulence and impaired effector delivery to the ring signal interface. Disruption of the v-SNARE SEC22 also reduced effector delivery. These findings suggest that biotrophy-expressed effectors are secreted, via the endoplasmic reticulum-to-Golgi route and subsequent exocytosis, toward the interface generated between C. orbiculare and the host cell.
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Affiliation(s)
- Hiroki Irieda
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Hitomi Maeda
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Kaoru Akiyama
- Hanaichi Ultrastructure Research Institute, Okazaki 444-0076, Japan
| | - Asuka Hagiwara
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | | | - Aiko Uemura
- Iwate Biotechnology Research Center, Iwate 024-0003, Japan
| | | | - Yoshitaka Takano
- Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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27
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Fawcett JA, Kado T, Sasaki E, Takuno S, Yoshida K, Sugino RP, Kosugi S, Natsume S, Mitsuoka C, Uemura A, Takagi H, Abe A, Ishii T, Terauchi R, Innan H. QTL map meets population genomics: an application to rice. PLoS One 2013; 8:e83720. [PMID: 24376738 PMCID: PMC3871663 DOI: 10.1371/journal.pone.0083720] [Citation(s) in RCA: 8] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 11/14/2013] [Indexed: 12/14/2022] Open
Abstract
Genes involved in the transition from wild to cultivated crop species should be of great agronomic importance. Population genomic approaches utilizing genome resequencing data have been recently applied for this purpose, although it only reports a large list of candidate genes with no biological information. Here, by resequencing more than 30 genomes altogether of wild rice Oryza rufipogon and cultivated rice O. sativa, we identified a number of regions with clear footprints of selection during the domestication process. We then focused on identifying candidate domestication genes in these regions by utilizing the wealth of QTL information in rice. We were able to identify a number of interesting candidates such as transcription factors that should control key domestication traits such as shattering, awn length, and seed dormancy. Other candidates include those that might have been related to the improvement of grain quality and those that might have been involved in the local adaptation to dry conditions and colder environments. Our study shows that population genomic approaches and QTL mapping information can be used together to identify genes that might be of agronomic importance.
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Affiliation(s)
| | - Tomoyuki Kado
- Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
| | - Eriko Sasaki
- Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
| | - Shohei Takuno
- Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
| | | | | | | | | | | | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Akira Abe
- Iwate Agricultural Research Center, Kitakami, Iwate, Japan
| | | | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- * E-mail: (HI); (RT)
| | - Hideki Innan
- Graduate University for Advanced Studies, Hayama, Kanagawa, Japan
- * E-mail: (HI); (RT)
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28
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Takagi H, Uemura A, Yaegashi H, Tamiru M, Abe A, Mitsuoka C, Utsushi H, Natsume S, Kanzaki H, Matsumura H, Saitoh H, Yoshida K, Cano LM, Kamoun S, Terauchi R. MutMap-Gap: whole-genome resequencing of mutant F2 progeny bulk combined with de novo assembly of gap regions identifies the rice blast resistance gene Pii. New Phytol 2013; 200:276-283. [PMID: 23790109 DOI: 10.1111/nph.12369] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Accepted: 05/13/2013] [Indexed: 05/20/2023]
Abstract
Next-generation sequencing allows the identification of mutations responsible for mutant phenotypes by whole-genome resequencing and alignment to a reference genome. However, when the resequenced cultivar/line displays significant structural variation from the reference genome, mutations in the genome regions missing from the reference (gaps) cannot be identified by simple alignment. Here we report on a method called 'MutMap-Gap', which involves delineating a candidate region harboring a mutation of interest using the recently reported MutMap method, followed by de novo assembly, alignment, and identification of the mutation within genome gaps. We applied MutMap-Gap to isolate the blast resistant gene Pii from the rice cv Hitomebore using mutant lines that have lost Pii function. MutMap-Gap should prove useful for cloning genes that exhibit significant structural variations such as disease resistance genes of the nucleotide-binding site-leucine rich repeat (NBS-LRR) class.
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Affiliation(s)
- Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
- United Graduate School of Iwate University, Morioka, Iwate, 020-8550, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Hiroki Yaegashi
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Muluneh Tamiru
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Chikako Mitsuoka
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Hiroe Utsushi
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Satoshi Natsume
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
- United Graduate School of Iwate University, Morioka, Iwate, 020-8550, Japan
| | - Hiroyuki Kanzaki
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | | | - Hiromasa Saitoh
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
| | - Kentaro Yoshida
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Liliana M Cano
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Sophien Kamoun
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
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29
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Fekih R, Takagi H, Tamiru M, Abe A, Natsume S, Yaegashi H, Sharma S, Sharma S, Kanzaki H, Matsumura H, Saitoh H, Mitsuoka C, Utsushi H, Uemura A, Kanzaki E, Kosugi S, Yoshida K, Cano L, Kamoun S, Terauchi R. MutMap+: genetic mapping and mutant identification without crossing in rice. PLoS One 2013; 8:e68529. [PMID: 23874658 PMCID: PMC3707850 DOI: 10.1371/journal.pone.0068529] [Citation(s) in RCA: 162] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Accepted: 05/29/2013] [Indexed: 11/19/2022] Open
Abstract
Advances in genome sequencing technologies have enabled researchers and breeders to rapidly associate phenotypic variation to genome sequence differences. We recently took advantage of next-generation sequencing technology to develop MutMap, a method that allows rapid identification of causal nucleotide changes of rice mutants by whole genome resequencing of pooled DNA of mutant F2 progeny derived from crosses made between candidate mutants and the parental line. Here we describe MutMap+, a versatile extension of MutMap, that identifies causal mutations by comparing SNP frequencies of bulked DNA of mutant and wild-type progeny of M3 generation derived from selfing of an M2 heterozygous individual. Notably, MutMap+ does not necessitate artificial crossing between mutants and the wild-type parental line. This method is therefore suitable for identifying mutations that cause early development lethality, sterility, or generally hamper crossing. Furthermore, MutMap+ is potentially useful for gene isolation in crops that are recalcitrant to artificial crosses.
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Affiliation(s)
- Rym Fekih
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- United Graduate School of Iwate University, Morioka, Iwate, Japan
| | - Muluneh Tamiru
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Akira Abe
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Satoshi Natsume
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- United Graduate School of Iwate University, Morioka, Iwate, Japan
| | | | | | - Shiveta Sharma
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | | | | | | | - Hiroe Utsushi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Aiko Uemura
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Eiko Kanzaki
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | | | - Liliana Cano
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Sophien Kamoun
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- * E-mail:
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30
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Sharma S, Sharma S, Hirabuchi A, Yoshida K, Fujisaki K, Ito A, Uemura A, Terauchi R, Kamoun S, Sohn KH, Jones JDG, Saitoh H. Deployment of the Burkholderia glumae type III secretion system as an efficient tool for translocating pathogen effectors to monocot cells. Plant J 2013; 74:701-12. [PMID: 23451734 DOI: 10.1111/tpj.12148] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 02/01/2013] [Accepted: 02/07/2013] [Indexed: 05/06/2023]
Abstract
Genome sequences of plant fungal pathogens have enabled the identification of effectors that cooperatively modulate the cellular environment for successful fungal growth and suppress host defense. Identification and characterization of novel effector proteins are crucial for understanding pathogen virulence and host-plant defense mechanisms. Previous reports indicate that the Pseudomonas syringae pv. tomato DC3000 type III secretion system (T3SS) can be used to study how non-bacterial effectors manipulate dicot plant cell function using the effector detector vector (pEDV) system. Here we report a pEDV-based effector delivery system in which the T3SS of Burkholderia glumae, an emerging rice pathogen, is used to translocate the AVR-Pik and AVR-Pii effectors of the fungal pathogen Magnaporthe oryzae to rice cytoplasm. The translocated AVR-Pik and AVR-Pii showed avirulence activity when tested in rice cultivars containing the cognate R genes. AVR-Pik reduced and delayed the hypersensitive response triggered by B. glumae in the non-host plant Nicotiana benthamiana, indicative of an immunosuppressive virulence activity. AVR proteins fused with fluorescent protein and nuclear localization signal were delivered by B. glumae T3SS and observed in the nuclei of infected cells in rice, wheat, barley and N. benthamiana. Our bacterial T3SS-enabled eukaryotic effector delivery and subcellular localization assays provide a useful method for identifying and studying effector functions in monocot plants.
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Affiliation(s)
- Shailendra Sharma
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan
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31
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Takagi H, Abe A, Yoshida K, Kosugi S, Natsume S, Mitsuoka C, Uemura A, Utsushi H, Tamiru M, Takuno S, Innan H, Cano LM, Kamoun S, Terauchi R. QTL-seq: rapid mapping of quantitative trait loci in rice by whole genome resequencing of DNA from two bulked populations. Plant J 2013; 74:174-83. [PMID: 23289725 DOI: 10.1111/tpj.12105] [Citation(s) in RCA: 669] [Impact Index Per Article: 60.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 12/13/2012] [Accepted: 12/20/2012] [Indexed: 05/18/2023]
Abstract
The majority of agronomically important crop traits are quantitative, meaning that they are controlled by multiple genes each with a small effect (quantitative trait loci, QTLs). Mapping and isolation of QTLs is important for efficient crop breeding by marker-assisted selection (MAS) and for a better understanding of the molecular mechanisms underlying the traits. However, since it requires the development and selection of DNA markers for linkage analysis, QTL analysis has been time-consuming and labor-intensive. Here we report the rapid identification of plant QTLs by whole-genome resequencing of DNAs from two populations each composed of 20-50 individuals showing extreme opposite trait values for a given phenotype in a segregating progeny. We propose to name this approach QTL-seq as applied to plant species. We applied QTL-seq to rice recombinant inbred lines and F2 populations and successfully identified QTLs for important agronomic traits, such as partial resistance to the fungal rice blast disease and seedling vigor. Simulation study showed that QTL-seq is able to detect QTLs over wide ranges of experimental variables, and the method can be generally applied in population genomics studies to rapidly identify genomic regions that underwent artificial or natural selective sweeps.
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Affiliation(s)
- Hiroki Takagi
- Iwate Biotechnology Research Center, Kitakami, Iwate, 024-0003, Japan; United Graduate School of Iwate University, Morioka, Iwate, 020-8550, Japan
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32
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Abe A, Takagi H, Fujibe T, Aya K, Kojima M, Sakakibara H, Uemura A, Matsuoka M, Terauchi R. OsGA20ox1, a candidate gene for a major QTL controlling seedling vigor in rice. Theor Appl Genet 2012; 125:647-57. [PMID: 22481119 DOI: 10.1007/s00122-012-1857-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 03/21/2012] [Indexed: 05/07/2023]
Abstract
Seedling vigor is among the major determinants of stable stand establishment in direct-seeded rice (Oryza sativa L.) in temperate regions. Quantitative trait loci (QTL) for seedling vigor were identified using 250 recombinant inbred lines (RILs) derived from a cross between two japonica rice cultivars Kakehashi and Dunghan Shali. Seedling heights measured at 14 days after sowing were 20.3 and 29.4 cm for Kakehashi and Dunghan Shali, respectively. For the RILs, the height ranged from 14.1 to 31.7 cm. Four putative QTLs associated with seedling height were detected. qPHS3-2, the major QTL that was located on the long arm of chromosome 3, accounted for 26.2 % of the phenotypic variance. Using progeny of the near isogenic lines (NILs) produced by the backcross introduction of a chromosome segment carrying this major QTL into an elite cultivar Iwatekko, we fine-mapped qPHS3-2 to a 81-kb interval between two markers, ID_CAPS_01 and RM16227. Within this mapped region, we identified the gene OsGA20ox1, which is related to gibberellin (GA) biosynthesis. The relative expression levels of GA20ox1 in seedlings of Dunghan Shali and NILs were higher than that of Iwatekko. Concomitantly, the amount of endogenous active GA was higher in Dunghan Shali and the NILs compared to the level detected in Iwatekko. These results indicate that OsGA20ox1 is a strong candidate gene for major QTL controlling seedling vigor in rice.
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Affiliation(s)
- Akira Abe
- Iwate Agricultural Research Center, 20-1, Narita, Kitakami, Iwate 024-0003, Japan.
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Fujii M, Uemura A, Matsukawa H, Yamamoto D, Kobayashi N, Numaguchi Y, Murakata A, Shinoda M, Ishikawa R. E-005 Preliminary result of carotid artery stenting using angioguard XP/precise stent with technique of mild post-angioplasty. J Neurointerv Surg 2010. [DOI: 10.1136/jnis.2010.003251.5] [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: 11/04/2022]
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Uemura A, Fujii M, Yamamoto D, Matsukawa H, Kobayashi N, Numaguchi Y. E-010 Triple coaxial catheter technique for coil embolization of cerebral aneurysms. J Neurointerv Surg 2010. [DOI: 10.1136/jnis.2010.003251.10] [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: 11/03/2022]
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Yamamoto D, Uemura A, Fujii M, Matsukawa H, Kobayashi N, Numaguchi Y, Murakata A, Shinoda M, Ishikawa R. E-034 Endovascular internal trapping for ruptured dissecting vertebral artery aneurysms. J Neurointerv Surg 2010. [DOI: 10.1136/jnis.2010.003251.34] [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: 11/04/2022]
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Uemura A, Musacchio M, Cardoso M, Mostoufizadeh S, Tournade A. Internal Carotid Bifurcation Aneurysms: Anatomical Features and Outcome of Endovascular Treatment. Neuroradiol J 2008; 21:574-8. [DOI: 10.1177/197140090802100417] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Accepted: 04/27/2008] [Indexed: 11/16/2022] Open
Abstract
This study reports the anatomical presentation of internal carotid bifurcation aneurysms and the angiographic results of their endovascular treatment. We treated 17 patients with internal carotid bifurcation aneurysms by endovascular treatment using detachable coils. Follow-ups were conducted for three to 30 months. The pre- and postprocedural anatomical features of the aneurysms, procedural complications, and postprocedural angiographic outcomes were evaluated. The aneurysmal necks were located just above the internal carotid artery bifurcation or at the origins of anterior cerebral artery or the middle cerebral artery. Immediate angiography demonstrated complete occlusion, neck remnant, or residual aneurysms. Post-treatment, two aneurysms that were initially residual spontaneously progressed to complete occlusion, and two large aneurysms that initially demonstrated complete occlusion or neck remnants showed coil compaction and recanalization. Procedural complications occurred in two cases. Endovascular treatment is effective for ruptured and unruptured carotid terminal aneurysms with various anatomical features.
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Affiliation(s)
- A. Uemura
- Neuroradiology Department, Pasteur Hospital; Colmar, France
| | - M. Musacchio
- Neuroradiology Department, Pasteur Hospital; Colmar, France
| | - M. Cardoso
- Neuroradiology Department, Pasteur Hospital; Colmar, France
| | | | - A. Tournade
- Neuroradiology Department, Pasteur Hospital; Colmar, France
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Uemura A, Musacchio M, Cardoso M, Tournade A. Anévrismes de la terminaison carotidienne : résultat du traitement endovasculaire. J Neuroradiol 2008. [DOI: 10.1016/j.neurad.2008.01.072] [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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Uemura A, Mori S, Sugahara K, Akamatsu N, Tsuruda K, Tsukasaki K, Hirakata Y, Atogami S, Hasegawa H, Yamada Y, Kamihira S. Rapid and high-resolution detection of IgH gene rearrangements using PCR and melting curve analysis. Int J Lab Hematol 2007; 29:200-7. [PMID: 17474898 DOI: 10.1111/j.1751-553x.2006.00832.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The analytical methods of Southern blot hybridization (SBH) and the polymerase chain reaction (PCR) for complementarity determining region-3 (CDR3) are fundamental for detecting IgH gene rearrangement. However, there are problems stemming from the characteristics of both methods; especially, the long turn around time (TAT) because of the complex process in the SBH, and the low analytical sensitivity for amplicons in the PCR. Thus, to improve the PCR procedure, we investigated the application of detecting the clonal amplicons based on the different melting Temperature (T(m)) in internal melting domains corresponding to the CDR3 hypervariable region. Our new protocol is based on the combination of a LightCycler Technology with high-speed amplification, and Idaho-Technology with rapid and high-resolution melting curve analysis (MCA), designated PCR-MCA. This method can provide the results within 3 h with an analytical sensitivity of 10(-3). The diagnostic sensitivity and specificity relative to the results documented with the SBH analysis were 89.2% and 100%, respectively. This indicates that the new protocol of PCR-MCA is acceptable for clinical testing; especially, PCR-MCA is relevant in terms of the rapid and sensitive detection of IgH clonality within amplicons.
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Affiliation(s)
- A Uemura
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki University Hospital, Nagasaki City, Nagasaki, Japan
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Hiramatsu H, Negoro M, Hayakawa M, Sadatou A, Irie K, Uemura A, Kanno T, Sano K. Extracranial vertebral artery aneurysm associated with neurofibromatosis type 1. A case report. Interv Neuroradiol 2007; 13 Suppl 1:90-3. [PMID: 20566083 DOI: 10.1177/15910199070130s112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Accepted: 01/15/2007] [Indexed: 11/16/2022] Open
Abstract
SUMMARY Extracranial vertebral artery aneurysm associated with neurofibromatosis (NF1) is very rare. The aneurysm was successfully treated by endovascular trapping of the aneurysm and proximal vertebral artery with coils.
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Affiliation(s)
- H Hiramatsu
- Department of Neurosurgery, Fujita Health University School of Medicine, Toyoake, Japan -
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Tatsumi T, Takehara T, Yamaguchi S, Sasakawa A, Miyagi T, Jinushi M, Sakamori R, Kohga K, Uemura A, Ohkawa K, Storkus WJ, Hayashi N. Injection of IL-12 gene-transduced dendritic cells into mouse liver tumor lesions activates both innate and acquired immunity. Gene Ther 2007; 14:863-71. [PMID: 17344900 DOI: 10.1038/sj.gt.3302941] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [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: 12/14/2022]
Abstract
Dendritic cell (DC)-based vaccines have been applied clinically in the setting of advanced-stage cancer. To date, the clinical efficacy of these vaccines has been limited, possibly owing to the impairment of transferred DC function in cancer-bearing patients. In this study, we examined the therapeutic efficacy of interleukin-12 (IL-12) gene-transfected DCs isolated from tumor-bearing hosts against liver tumor. The endogenous DCs isolated from subcutaneous (s.c.) CMS4 tumor-bearing mice (CMS4DC) exhibited decreased expression levels of antigen-presenting molecules and low-allostimulatory capacity. CMS4DC produced less IL-12p70 than DCs isolated from normal mice. Adenoviral transfection of IL-12 gene into CMS4DC (AdIL12DC) restored the expression of antigen-presenting molecules and allostimulatory capacity. Intratumoral (i.t.) delivery of AdIL12DC resulted in complete rejection of intrahepatic CMS4 tumors and activation of innate and acquired immune cells. Antibody depletion studies revealed that both CD4(+) and CD8(+) T cells as well as natural killer cells play critical roles in mediating liver tumor rejection. I.t. treatment of AdIL12DC resulted in long-term protection against s.c. rechallenge with CMS4 tumor cells. These results revealed that IL-12 gene transfer is capable of improving the impaired functions of DC isolated from tumor-bearing hosts, and support the preclinical therapeutic efficacy of intrahepatic injection of AdIL12DC.
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Affiliation(s)
- T Tatsumi
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Japan
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Furukawa M, Kumagai K, Ogino N, Uemura A, Larson E. Long-term visual outcomes of vitrectomy for cystoid macular edema due to nonischemic central retinal vein occlusion. Eur J Ophthalmol 2007; 16:841-6. [PMID: 17191190 DOI: 10.1177/112067210601600609] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE To report the long-term surgical outcome of vitrectomy for cystoid macular edema due to nonischemic central retinal vein occlusion (CRVO). METHODS A retrospective chart review of 25 consecutive eyes (25 patients) with cystoid macular edema due to nonischemic CRVO treated with vitrectomy was performed. All patients underwent a pars plana vitrectomy with the creation of a posterior vitreous detachment if still attached. Simultaneous phacoemulsification with intraocular lens implantation was also performed in phakic eyes. The main outcome measures were best-corrected visual acuity (BCVA) and changes in macular edema shown by contact-lens biomicroscopy. The mean follow-up time was 49 months (range, 16-108). RESULTS The median BCVA before surgery was 0.31 and the median BCVA at last follow-up was 0.67. The BCVA at the last follow-up improved at least two Snellen lines in 17 (68%), remained unchanged in 4 (16%), and worsened in 4 (16%). The BCVA was 20/40 or better in 3 eyes (12%) preoperatively and in 18 eyes (72%) at the last follow-up. During the follow-up, four patients progressed to ischemic CRVO; one of them had neovascular glaucoma requiring surgical intervention. CONCLUSION The data indicate that vitrectomy appears to be a possibly effective treatment in some eyes with cystoid macular edema associated with nonischemic CRVO.
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Affiliation(s)
- M Furukawa
- Department of Ophthalmology, Kami-iida First General Hospital, Nagoya, Japan
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Uemura A, Numaguchi Y, Matsusako M, Kobayashi N, Saida Y, Rahman M. Effect on partial pressure of oxygen in arterial blood in percutaneous vertebroplasty. AJNR Am J Neuroradiol 2007; 28:567-9. [PMID: 17353338 PMCID: PMC7977848] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND PURPOSE The purpose of this study is to estimate the change in partial pressure of oxygen (Pao(2)) during percutaneous vertebroplasty and also to examine the factors related to the change in Pao(2). MATERIALS AND METHODS We retrospectively reviewed preprocedural and postprocedural Pao(2) of 59 consecutive patients who underwent percutaneous vertebroplasty between November 2003 and April 2005 (11 men and 48 women; age range, 50-93; mean age, 75 years). Fifty-four patients were treated for osteoporosis-related fractures and 5 had malignant disease. Percutaneous vertebroplasty was performed in a conventional manner under local anesthetics and conscious sedation. Preprocedural and postprocedural blood drawing was performed 5 days to 30 minutes before percutaneous vertebroplasty and also at 30 minutes after the injection of bone cement. The difference between preprocedural and postprocedural data of Pao(2) was correlated with patients' age, number of treated vertebral bodies, presence of cement leakage, and presence of malignant neoplasm for each patient. RESULTS Mean pre-Pao(2) and post-Pao(2) were 80.9 +/- 1.4 and 70.6 +/- 1.3 mm Hg (mean +/- SE) respectively (P = .0001). Using analysis of variance, there was a significant difference according to the number of vertebral bodies. There was a positive trend of decrease in Pao(2) according to the number of vertebral bodies during percutaneous vertebroplasty. Using multiple linear regression and after adjusting by preprocedural Pao(2) and other variables, the number of vertebral bodies was still highly significant. CONCLUSION Pao(2) decreases during percutaneous vertebroplasty, and there is a correlation between the number of treated vertebral bodies and decrease in Pao(2).
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Affiliation(s)
- A Uemura
- Department of Radiology, St. Luke's International Hospital, Tokyo, Japan.
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Kamihira S, Sugahara K, Tsuruda K, Minami S, Uemura A, Akamatsu N, Nagai H, Murata K, Hasegawa H, Hirakata Y, Takasaki Y, Tsukasaki K, Yamada Y. Proviral status of HTLV-1 integrated into the host genomic DNA of adult T-cell leukemia cells. ACTA ACUST UNITED AC 2005; 27:235-41. [PMID: 16048490 DOI: 10.1111/j.1365-2257.2005.00698.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.5] [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: 11/28/2022]
Abstract
Human T-cell leukemia virus type-1 (HTLV-1) is the etiological agent of adult T-cell leukemia (ATL), and leukemic cells always carry the proviral genome monoclonally integrated into their host genomes at the same sequence site, designated as the monoclonal integration. Using Southern blot hybridization (SBH) and sequenced tagged site polymerase chain reaction assays, we examined the proviral status in 558 clinical specimens from 350 patients who are suspected to have ATL. A total of 321 specimens (57.5%) from 241 patients showed positive results for the monoclonal integration according to SBH, using EcoR1 and Pst1. The 241 patients consisted of 136 patients (56.4%) with the complete provirus (C-type), 62 patients (25.7%) with a defective provirus (D-type), and 43 patients (17.8%) with multibands (M-type). The incidence of the D- and M-types were in the order of smoldering, chronic, and acute subtypes of ATL, suggesting that such an aberrant proviral status is generated on the way to multistep carcinogenesis and is subsequently clinically important for the malignant behavior of the disease. Moreover, our data showed that the partial deletion of the proviral genome is initiated first at the site of the gag region and spreads into the sites of the pol and env regions, whereas the long terminal repeats and pX regions are almost always conserved. These results suggest that analysis of the proviral status provides useful diagnostic and virologic-oncological information about ATL and HTLV-1 pathology, especially the important role of pX gene in tumorigenesis.
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Affiliation(s)
- S Kamihira
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki City, Japan 852-8501.
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Fujii Y, Uemura A. Effect of metoclopramide on pain on injection of propofol. Anaesth Intensive Care 2004; 32:653-6. [PMID: 15535488] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
We undertook a randomized, double-blind, placebo-controlled study to examine the efficacy of metoclopramide at three different doses (2.5 mg, 5 mg, 10 mg) for reducing pain on injection of propofol in 100 patients scheduled for elective surgery. Patients received intravenously the study drug, with venous occlusion for one minute, followed by propofol 2 mg/kg into a dorsal hand vein. The incidence of pain was significantly less in patients receiving metoclopramide 5 mg (32%) or 10 mg (28%) than in patients receiving placebo (80%) (P<0.01). No difference between metoclopramide 2.5 mg and the placebo groups was found. We conclude that pretreatment of a dorsal hand vein with metoclopramide in a dose of 5 or 10 mg, with venous occlusion for one minute, effectively decreases the incidence of pain caused by propofol injection.
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Affiliation(s)
- Y Fujii
- Department of Anaesthesiology, University of Tsukuba Institue of Clinical Medicine, Tsukuba City, Ibaraki, Japan
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Hiramitsu S, Morimoto S, Kato S, Uemura A, Kubo N, Kimura K, Sugiura A, Itoh T, Hishida H. Transient ventricular wall thickening in acute myocarditis: a serial echocardiographic and histopathologic study. ACTA ACUST UNITED AC 2002. [PMID: 11665789 DOI: 10.1016/s1885-5857(10)70104-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The present study was designed to determine whether the wall thickening seen in acute myocarditis is caused by interstitial edema. The study group comprised 25 patients (idiopathic myocarditis, 17; eosinophilic myocarditis, 8) in whom acute myocarditis was diagnosed histologically and who underwent echocardiography and endomyocardial biopsy during both the acute and convalescent phases. The following echocardiographic parameters were measured: interventricular septum and left ventricular posterior wall thickness, left ventricular end-diastolic dimension, and left ventricular ejection fraction. Based on the myocardial biopsy specimens, the degree of interstitial edema was classified into 3 grades [(-), 1(+), 2(+)] and the transverse diameter of cardiac myocytes was measured using light microscopy. The thickness of both the interventricular septum and left ventricular wall decreased from 14.3+/-3.7 mm and 13.3+/-2.4 mm in the acute phase to 9.7+/-1.7 mm (p<0.001) and 10.2+/-1.7 mm (p<0.0001), respectively, in the convalescent phase. Edema was present in 22 patients (88.0%) in the acute phase, but in the convalescent phase, edema was present in only 7 patients (28.0%), indicating a significant reduction in the degree of edema (p<0.0001). Cardiac myocyte diameter did not differ significantly between the acute (13.6+/-1.1 microm) and convalescent (13.8+/-1.8 microm) phases.
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Affiliation(s)
- S Hiramitsu
- Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Japan
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Okubo A, Sameshima M, Uemura A, Kanda S, Ohba N. Clinicopathological correlation of polypoidal choroidal vasculopathy revealed by ultrastructural study. Br J Ophthalmol 2002; 86:1093-8. [PMID: 12234885 PMCID: PMC1771298 DOI: 10.1136/bjo.86.10.1093] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To describe the clinical and histopathological findings in a patient with polypoidal choroidal vasculopathy. METHODS A 76 year old Japanese man had a discrete, orange-red lesion of 1 disc diameter in the macula, with the fluorescein and indocyanine green angiographic and optical coherence tomographic findings compatible with polypoidal choroidal vasculopathy. He underwent a surgical removal of the macular lesion, followed by light and electron microscopic examinations. RESULTS The histopathological examination revealed that the specimen consisted of degenerated retinal pigment epithelium-Bruch's membrane-choriocapillaris complex and inner choroid. A tortuous, unusually dilated venule was present adjacent to an arteriole with marked sclerotic changes, appearing to form arteriovenous crossing. These vessels seemed to represent native inner choroidal vessels, and had haemorrhage per diapedesis. Blood cells and fibrin filled the lumina of the vessels and accumulated in the extravascular spaces, indicating vascular stasis. CONCLUSION Hyperpermeability and haemorrhage due to stasis of a dilated venule and an arteriole involved by sclerosis at the site where they cross in the inner choroid might cause oedema and degeneration of the tissue. Voluminous accumulation of blood cells and fibrin might generate elevation of tissue pressure sufficient to displace the weakened lesion anteriorly. The result suggests that the polypoidal vessels in this case represent abnormality in the inner choroidal vasculature.
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Affiliation(s)
- A Okubo
- Department of Ophthalmology, Kagoshima University Faculty of Medicine, Sakuragaoka 8-35-1, Kagoshima 890-8520, Japan.
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Uemura A, O'uchi T, Sakamoto T, Yashiro N. High signal of the striatum in sporadic Creutzfeldt-Jakob disease: sequential change on T2-weighted MRI. Neuroradiology 2002; 44:314-8. [PMID: 11914807 DOI: 10.1007/s00234-001-0710-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2001] [Accepted: 09/08/2001] [Indexed: 10/27/2022]
Abstract
The object of this study is to describe the sequential change of high signal of the striatum on T2-weighted MRI in sporadic Creutzfeldt-Jakob disease (CJD). Three cases of autopsy-proven sporadic CJD and a total of 18 serial MR images are included in this study. The degree of high signal of the striatum on T2-weighted MRI was evaluated by two neuroradiologists and divided into four grades by mutual agreement. Initial MRI of all three cases showed a slightly high signal of the bilateral striatum, and the conspicuity of the high signal became more prominent as the disease progressed. In each case the pathological change of striatum and globus pallidus was compared with the high signal on the last MR image.
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Affiliation(s)
- A Uemura
- Department of Radiology, Kameda Medical Center, 929 Higashi-cho, Kamogawa, Chiba 296-8602, Japan.
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Abstract
BACKGROUND Diaphragmatic fatigue is implicated as a cause of respiratory failure. This study was undertaken to evaluate the effects of inhaled olprinone, a newly developed phosphodiesterase III inhibitor, on the contractility of fatigued diaphragm in dogs. METHODS Diaphragmatic fatigue was induced by intermittent supramaximal bilateral electrophrenic stimulation at a frequency of 20 Hz stimulation applied for 30 min. When fatigue was established, group I (n=8) received inhaled vehicle; group II (n=8) received inhaled olprinone 1 mg; group III (n=8) received inhaled olprinone 2 mg. Diaphragmatic contractility was assessed by transdiaphragmatic pressure (Pdi, cm H2O). RESULTS In the presence of fatigue, in each group, Pdi at low-frequency (20 Hz) stimulation decreased from baseline values (P<0.05), whereas Pdi at high-frequency (100 Hz) stimulation did not change. In groups II and III, during olprinone administration, Pdi at both stimuli increased from fatigued values (20 Hz stimulation: group II (mean (SD)) 10.8 (1.0) to 12.5 (1.3), group III 10.9 (1.7) to 15.0 (3.0); 100 Hz stimulation: group II 20.1 (1.9) to 22.6 (1.3), group III 20.6 (2.0) to 24.5 (2.0), P<0.05). The increase in Pdi was larger in group III than in group II (P<0.05). CONCLUSIONS Inhaled olprinone produces a dose-dependent improvement in contractility of fatigued canine diaphragm.
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Affiliation(s)
- A Uemura
- Department of Anaesthesiology, University of Tsukuba Institute of Clinical Medicine, Tsukuba City, Ibaraki, Japan
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Uemura A. Follow-up Studies of Optic Neuritis with Lymphocytic Adenohypophysitis. Jpn J Ophthalmol 2002. [DOI: 10.1016/s0021-5155(01)00484-1] [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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Uemura A, Fujimoto H, Yasuda S, Osaka I, Goto N, Shinozaki M, Ito H. Transcatheter arterial embolization for bone metastases from hepatocellular carcinoma. Eur Radiol 2002; 11:1457-62. [PMID: 11519558 DOI: 10.1007/s003300000792] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [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: 11/28/2022]
Abstract
The objective of this study was to determine which of the following three methods is the most effective for the treatment of bone metastases from hepatocellular carcinoma (HCC): transcatheter arterial embolization (TAE); combination of TAE and external radiotherapy; or external radiotherapy alone. Thirty-nine metastatic bone lesions from HCC in 33 patients were retrospectively reviewed. Each lesion underwent either TAE alone (group A, n = 11), TAE followed by radiotherapy (group B, n = 17), or radiotherapy alone (group C, n = 11). They were evaluated on the following subjects: pain relief; improvement of daily activities; and complications. Each treatment was effective for pain relief (89-94%) and improvement of daily activities (73-82%). The mean time interval from the beginning of each treatment to the onset of initial pain relief was 4.7 days in group A, 4.8 days in group B, and 15 days in group C. Recurrence of the pain after the initial pain relief was noted in 75% in group A, 20% in group B, and 88% in group C. Pyrexia and local pain commonly occurred after TAE. In conclusion, TAE is effective in relieving pain immediately and in improving the patients' daily activities. The combination of TAE and radiotherapy is recommended for permanent pain relief.
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Affiliation(s)
- A Uemura
- Department of Radiology, Numazu City Hospital, Shizuoka, Japan.
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