1
|
Kozuka T, Oka Y, Kohzuma K, Kusaba M. Cryptochromes suppress leaf senescence in response to blue light in Arabidopsis. Plant Physiol 2023; 191:2506-2518. [PMID: 36715309 PMCID: PMC10069897 DOI: 10.1093/plphys/kiad042] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 01/03/2023] [Indexed: 06/18/2023]
Abstract
The induction and progression of leaf senescence are effectively changed according to the light environment. The leaf senescence response is enhanced when plants are grown under a dense shade cast by neighboring vegetation. Although the fluence rate of the red and blue regions in the light spectrum is strongly attenuated under shade, photosensory mechanisms that underpin the blue light response are still unclear. In this study, we analyzed leaf senescence in response to blue light in Arabidopsis (Arabidopsis thaliana). We found that leaf senescence was promoted by the elimination of active phytochrome Pfr by pulsed far-red (FR) light, whereas irradiation with blue light suppressed leaf senescence in the wild type but not in the cryptochrome (CRY)-deficient mutant, cry1 cry2. Hence, two light-sensing modes contributed to the suppression of leaf senescence that was dependent on light spectrum features. First was the leaf senescence response to blue light, which was mediated exclusively by cryptochromes. Second was the phytochrome-mediated leaf senescence response to red/FR light. Physiological analysis of transgenic plants expressing green fluorescent protein (GFP)-tagged CRY2 revealed that photo-activation of cryptochromes was required to suppress leaf senescence in response to blue light. Transcriptomic analysis further uncovered the molecular and cellular processes involved in the regulation of leaf senescence downstream of cryptochromes. Furthermore, analysis of cryptochrome-downstream components indicated that ELONGATED HYPOCOTYL 5 (HY5) and PHYTOCHROME INTERACTING FACTOR (PIF) 4 and PIF5 were required for suppression and promotion of leaf senescence, respectively.
Collapse
Affiliation(s)
- Toshiaki Kozuka
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Yoshito Oka
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kaori Kohzuma
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Makoto Kusaba
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| |
Collapse
|
2
|
Nihei K, Nakamura K, Karasawa K, Saito Y, Shikama N, Noda S, Hara R, Imagumbai T, Mizowaki T, Akiba T, Kunieda E, Hori M, Ohga S, Kawamori J, Kozuka T, Ota Y, Inaba K, Kodaira T, Itoh Y, Kagami Y. A Japanese Multi-Institutional Phase II Study of Moderate Hypofractionated Intensity-Modulated Radiotherapy With Image-Guided Technique for Prostate Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Murakami Y, Soyano T, Kozuka T, Ushijima M, Koizumi Y, Miyauchi H, Kaneko M, Nakano M, Kamima T, Hashimoto T, Oguchi M, Yoshioka Y. Can Dosiomics Features Be Relevant Predictive Factors for Biochemical Recurrence After Radiotherapy in Prostate Cancer Patients? Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
4
|
Nakano M, Hirakawa H, Fukai E, Toyoda A, Kajitani R, Minakuchi Y, Itoh T, Higuchi Y, Kozuka T, Bono H, Shirasawa K, Shiraiwa I, Sumitomo K, Hisamatsu T, Shibata M, Isobe S, Taniguchi K, Kusaba M. A chromosome-level genome sequence of Chrysanthemum seticuspe, a model species for hexaploid cultivated chrysanthemum. Commun Biol 2021; 4:1167. [PMID: 34620992 PMCID: PMC8497461 DOI: 10.1038/s42003-021-02704-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 04/27/2021] [Accepted: 09/20/2021] [Indexed: 12/26/2022] Open
Abstract
Chrysanthemums are one of the most industrially important cut flowers worldwide. However, their segmental allopolyploidy and self-incompatibility have prevented the application of genetic analysis and modern breeding strategies. We thus developed a model strain, Gojo-0 (Chrysanthemum seticuspe), which is a diploid and self-compatible pure line. Here, we present the 3.05 Gb chromosome-level reference genome sequence, which covered 97% of the C. seticuspe genome. The genome contained more than 80% interspersed repeats, of which retrotransposons accounted for 72%. We identified recent segmental duplication and retrotransposon expansion in C. seticuspe, contributing to arelatively large genome size. Furthermore, we identified a retrotransposon family, SbdRT, which was enriched in gene-dense genome regions and had experienced a very recent transposition burst. We also demonstrated that the chromosome-level genome sequence facilitates positional cloning in C. seticuspe. The genome sequence obtained here can greatly contribute as a reference for chrysanthemum in front-line breeding including genome editing.
Collapse
Affiliation(s)
- Michiharu Nakano
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | | | - Eigo Fukai
- Graduate School of Science and Technology, Niigata University, Niigata, Niigata, Japan
| | - Atsushi Toyoda
- National Institute of Genetics, Mishima, Shizuoka, Japan
| | - Rei Kajitani
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
| | | | - Takehiko Itoh
- School of Life Science and Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan
| | - Yohei Higuchi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Toshiaki Kozuka
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Hidemasa Bono
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | | | - Ippei Shiraiwa
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Katsuhiko Sumitomo
- Institute of Floricultural Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Tamotsu Hisamatsu
- Institute of Floricultural Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Michio Shibata
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Sachiko Isobe
- Kazusa DNA Research Institute, Kisarazu, Chiba, Japan
| | - Kenji Taniguchi
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan
| | - Makoto Kusaba
- Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima, Japan.
| |
Collapse
|
5
|
Kajiya-Kanegae H, Takanashi H, Fujimoto M, Ishimori M, Ohnishi N, Wacera W F, Omollo EA, Kobayashi M, Yano K, Nakano M, Kozuka T, Kusaba M, Iwata H, Tsutsumi N, Sakamoto W. RAD-seq-Based High-Density Linkage Map Construction and QTL Mapping of Biomass-Related Traits in Sorghum using the Japanese Landrace Takakibi NOG. Plant Cell Physiol 2020; 61:1262-1272. [PMID: 32353144 DOI: 10.1093/pcp/pcaa056] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 12/30/2019] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Sorghum [Sorghum bicolor (L.) Moench] grown locally by Japanese farmers is generically termed Takakibi, although its genetic diversity compared with geographically distant varieties or even within Takakibi lines remains unclear. To explore the genomic diversity and genetic traits controlling biomass and other physiological traits in Takakibi, we focused on a landrace, NOG, in this study. Admixture analysis of 460 sorghum accessions revealed that NOG belonged to the subgroup that represented Asian sorghums, and it was only distantly related to American/African accessions including BTx623. In an attempt to dissect major traits related to biomass, we generated a recombinant inbred line (RIL) from a cross between BTx623 and NOG, and we constructed a high-density linkage map based on 3,710 single-nucleotide polymorphisms obtained by restriction-site-associated DNA sequencing of 213 RIL individuals. Consequently, 13 fine quantitative trait loci (QTLs) were detected on chromosomes 2, 3, 6, 7, 8 and 9, which included five QTLs for days to heading, three for plant height (PH) and total shoot fresh weight and two for Brix. Furthermore, we identified two dominant loci for PH as being identical to the previously reported dw1 and dw3. Together, these results corroborate the diversified genome of Japanese Takakibi, while the RIL population and high-density linkage map generated in this study will be useful for dissecting other important traits in sorghum.
Collapse
Affiliation(s)
- Hiromi Kajiya-Kanegae
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
- Research Center for Agricultural Information Technology, National Agriculture and Food Research Organization, Tsukuba, Ibaraki 305-8517, Japan
| | - Hideki Takanashi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Masaru Fujimoto
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Motoyuki Ishimori
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Norikazu Ohnishi
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046 Japan
| | - Fiona Wacera W
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046 Japan
| | - Everlyne A Omollo
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046 Japan
| | - Masaaki Kobayashi
- Department of Life Sciences Faculty of Agriculture, Meiji University, Kawasaki, Kanagawa, 214-8571 Japan
| | - Kentaro Yano
- Department of Life Sciences Faculty of Agriculture, Meiji University, Kawasaki, Kanagawa, 214-8571 Japan
| | - Michiharu Nakano
- Graduate School of Integral Science for Life, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526 Japan
| | - Toshiaki Kozuka
- Graduate School of Integral Science for Life, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526 Japan
| | - Makoto Kusaba
- Graduate School of Integral Science for Life, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526 Japan
| | - Hiroyoshi Iwata
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Nobuhiro Tsutsumi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
| | - Wataru Sakamoto
- Institute of Plant Science and Resources, Okayama University, Kurashiki, Okayama, 710-0046 Japan
| |
Collapse
|
6
|
Kozuka T, Sawada Y, Imai H, Kanai M, Hirai MY, Mano S, Uemura M, Nishimura M, Kusaba M, Nagatani A. Regulation of Sugar and Storage Oil Metabolism by Phytochrome during De-etiolation. Plant Physiol 2020; 182:1114-1129. [PMID: 31748417 PMCID: PMC6997681 DOI: 10.1104/pp.19.00535] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 11/02/2019] [Indexed: 05/02/2023]
Abstract
Exposure of dark-grown (etiolated) seedlings to light induces the heterotrophic-to-photoautotrophic transition (de-etiolation) processes, including the formation of photosynthetic machinery in the chloroplast and cotyledon expansion. Phytochrome is a red (R)/far-red (FR) light photoreceptor that is involved in the various aspects of de-etiolation. However, how phytochrome regulates metabolic dynamics in response to light stimulus has remained largely unknown. In this study, to elucidate the involvement of phytochrome in the metabolic response during de-etiolation, we performed widely targeted metabolomics in Arabidopsis (Arabidopsis thaliana) wild-type and phytochrome A and B double mutant seedlings de-etiolated under R or FR light. The results revealed that phytochrome had strong impacts on the primary and secondary metabolism during the first 24 h of de-etiolation. Among those metabolites, sugar levels decreased during de-etiolation in a phytochrome-dependent manner. At the same time, phytochrome upregulated processes requiring sugars. Triacylglycerols are stored in the oil bodies as a source of sugars in Arabidopsis seedlings. Sugars are provided from triacylglycerols through fatty acid β-oxidation and the glyoxylate cycle in glyoxysomes. We examined if and how phytochrome regulates sugar production from oil bodies. Irradiation of the etiolated seedlings with R and FR light dramatically accelerated oil body mobilization in a phytochrome-dependent manner. Glyoxylate cycle-deficient mutants not only failed to mobilize oil bodies but also failed to develop thylakoid membranes and expand cotyledon cells upon exposure to light. Hence, phytochrome plays a key role in the regulation of metabolism during de-etiolation.
Collapse
Affiliation(s)
- Toshiaki Kozuka
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 Japan
| | - Yuji Sawada
- RIKEN Center for Sustainable Resource Science, RIKEN, Yokohama, Kanagawa 230-0045, Japan
| | - Hiroyuki Imai
- United Graduate School of Agricultural Science, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Masatake Kanai
- Department of Cell Biology, National Institute for Basic Biology, Okazaki, Aichi 444-8585, Japan
| | - Masami Yokota Hirai
- RIKEN Center for Sustainable Resource Science, RIKEN, Yokohama, Kanagawa 230-0045, Japan
| | - Shoji Mano
- Department of Cell Biology, National Institute for Basic Biology, Okazaki, Aichi 444-8585, Japan
- Department of Basic Biology, School of Life Science, SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8585, Japan
| | - Matsuo Uemura
- United Graduate School of Agricultural Science, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Mikio Nishimura
- Department of Cell Biology, National Institute for Basic Biology, Okazaki, Aichi 444-8585, Japan
| | - Makoto Kusaba
- Graduate School of Integrated Science for Life, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526 Japan
| | - Akira Nagatani
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| |
Collapse
|
7
|
Ueda H, Ito T, Inoue R, Masuda Y, Nagashima Y, Kozuka T, Kusaba M. Genetic Interaction Among Phytochrome, Ethylene and Abscisic Acid Signaling During Dark-Induced Senescence in Arabidopsis thaliana. Front Plant Sci 2020; 11:564. [PMID: 32508856 PMCID: PMC7253671 DOI: 10.3389/fpls.2020.00564] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/15/2020] [Indexed: 05/18/2023]
Abstract
Leaf senescence is induced by various internal and external stimuli. Dark-induced senescence has been extensively investigated, but the detailed mechanism underlying it is not well understood. The red light/far-red light receptor phytochrome B and its downstream transcription factors, PYHTOCHROME INTERACTING FACTORs (PIFs) 4 and 5, are known to play an important role in dark-induced senescence. Furthermore, the senescence-inducing phytohormones, ethylene and abscisic acid (ABA) are reported to be involved in dark-induced senescence. In this study, we analyzed the relationship between ethylene, ABA and PIFs in dark-induced leaf senescence. A triple mutant of the core ABA signaling components; SNF1-related protein kinases 2D (SRK2D), SRK2E, and SRK2I, displayed an ABA insensitive phenotype in ABA-induced senescence, whilst the ethylene insensitive mutant ein2 demonstrated low sensitivity to ABA, suggesting that ethylene signaling is involved in ABA-induced senescence. However, the pif4 pif5 mutant did not display low sensitivity to ABA, suggesting that PIF4 and PIF5 act upstream of ABA signaling. Although PIF4 and PIF5 reportedly regulate ethylene production, the triple mutant ein2 pif4 pif5 showed a stronger delayed senescence phenotype than ein2 or pif4 pif5, suggesting that EIN2 and PIF4/PIF5 partially regulate leaf senescence independently of each other. While direct target genes for PIF4 and PIF5, such as LONG HYPOCOTYL IN FAR-RED1 (HFR1) and PHYTOCHROME INTERACTING FACTOR 3-LIKE 1 (PIL1), showed transient upregulation under dark conditions (as is seen in the shade avoidance response), expression of STAY GREEN1 (SGR1), ORESARA1 (ORE1) and other direct target genes of PIF5, continued to increase during dark incubation. It is possible that transcription factors other than PIF4 and PIF5 are involved in the upregulation of SGR1 and ORE1 at a later stage of dark-induced senescence. Possible candidates are senescence-induced senescence regulators (SIRs), which include the NAC transcription factors ORE1 and AtNAP. In fact, ORE1 is known to bind to the SGR1 promoter and promotes its expression. It is therefore inferred that the phytochrome-PIF pathway regulates initial activation of senescence and subsequently, induced SIRs reinforce leaf senescence during dark-induced senescence.
Collapse
|
8
|
Nakano M, Taniguchi K, Masuda Y, Kozuka T, Aruga Y, Han J, Motohara K, Nakata M, Sumitomo K, Hisamatsu T, Nakano Y, Yagi M, Hirakawa H, Isobe SN, Shirasawa K, Nagashima Y, Na H, Chen L, Liang G, Chen R, Kusaba M. A pure line derived from a self-compatible Chrysanthemum seticuspe mutant as a model strain in the genus Chrysanthemum. Plant Sci 2019; 287:110174. [PMID: 31481216 DOI: 10.1016/j.plantsci.2019.110174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 06/10/2023]
Abstract
Asteraceae is the largest family of angiosperms, comprising approximately 24,000 species. Molecular genetic studies of Asteraceae are essential for understanding plant diversity. Chrysanthemum morifolium is the most industrially important ornamental species in Asteraceae. Most cultivars of C. morifolium are autohexaploid and self-incompatible. These properties are major obstacles to the genetic analysis and modern breeding of C. morifolium. Furthermore, high genome heterogeneity complicates molecular biological analyses. In this study, we developed a model strain in the genus Chrysanthemum. C. seticuspe is a diploid species with a similar flowering property and morphology to C. morifolium and can be subjected to Agrobacterium-mediated transformation. We isolated a natural self-compatible mutant of C. seticuspe and established a pure line through repeated selfing and selection. The resultant strain, named Gojo-0, was favorable for genetic analyses, including isolation of natural and induced mutants, and facilitated molecular biological analysis, including whole genome sequencing, owing to the simplicity and homogeneity of its genome. Interspecific hybridization with Chrysanthemum species was possible, enabling molecular genetic analysis of natural interspecific variations. The accumulation of research results and resources using Gojo-0 as a platform is expected to promote molecular genetic studies on the genus Chrysanthemum and the genetic improvement of chrysanthemum cultivars.
Collapse
Affiliation(s)
- Michiharu Nakano
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Kenji Taniguchi
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Yu Masuda
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Toshiaki Kozuka
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Yuki Aruga
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Jin Han
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Koichiro Motohara
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Masashi Nakata
- Botanic Gardens of Toyama, Kamikutsuwada 42, Fuchu-machi, Toyama, 939-2713, Japan
| | - Katsuhiko Sumitomo
- Institute of Vegetable and Floriculture Sciences, NARO, 2-1 Fujimoto, Tsukuba, Ibaraki, 305-0852, Japan
| | - Tamotsu Hisamatsu
- Institute of Vegetable and Floriculture Sciences, NARO, 2-1 Fujimoto, Tsukuba, Ibaraki, 305-0852, Japan
| | - Yoshihiro Nakano
- Institute of Vegetable and Floriculture Sciences, NARO, 2-1 Fujimoto, Tsukuba, Ibaraki, 305-0852, Japan
| | - Masafumi Yagi
- Institute of Vegetable and Floriculture Sciences, NARO, 2-1 Fujimoto, Tsukuba, Ibaraki, 305-0852, Japan
| | - Hideki Hirakawa
- Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, 292-0818, Japan
| | - Sachiko N Isobe
- Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, 292-0818, Japan
| | - Kenta Shirasawa
- Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, 292-0818, Japan
| | - Yumi Nagashima
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - Haiyan Na
- College of Life Sciences, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Li Chen
- College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Guolu Liang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Ruiyan Chen
- College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Makoto Kusaba
- Graduate school of Integrated Sciences for Life, Hiroshima University, 1-4-3, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
| |
Collapse
|
9
|
Isaka Y, Etani H, Kimura K, Yoneda S, Kamada T, Kozuka T, Nobuhara M, Uehara A. Binding of 131I-Labeled Tissue-Type Plasminogen Activator on De-Endothelialized Lesions in Rabbits. Nuklearmedizin 2018. [DOI: 10.1055/s-0038-1628893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Tissue-type plasminogen activator (t-PA) which has a high affinity for fibrin in the clot, was labeled with 131I by the iodogen method, and its binding to de-endothelialized lesions in the rabbit was measured to assess the detectability of thrombi. The de-endothelialized lesion was induced in the abdominal aorta with a Fogarty 4F balloon catheter. Two hours after the de-endothelialization, 131I-labeled t-PA (125 ± 46 μCi) was injected intravenously. The initial half-life of the agent in blood (n = 12) was 2.9 ± 0.4 min. The degree of binding of 131I-labeled t-PA to the de-endothelialized lesion was evaluated at 15 min (n = 6) or at 30 min (n = 6) after injection of the agent. In spite of the retention of the biochemical properties of 131I-labeled t-PA and the presence of fibrin deposition at the de-endothelialized lesion, the binding of t-PA to the lesion was not sufficiently strong. Lesion-to-control ratios (cpm/g/cpm/g) were 1.65 ± 0.40 (at 15 min) and 1.39 ± 1.31 (at 30 min), and lesion-to-blood ratios were 1.39 ± 0.32 (at 15 min) and 1.36 ± 0.23 (at 30 min). These results suggest that radiolabeled t-PA may be inappropriate as a radiopharmaceutical for the scintigraphic detection of a pre-existing thrombotic lesion.
Collapse
|
10
|
Onishi H, Nagata Y, Hiraoka M, Wakabayashi M, Eba J, Ishikura S, Kokubo M, Karasawa K, Shioyama Y, Onimaru R, Kozuka T, Kunieda E, Saito T, Nakagawa K, Hareyama M, Takai Y, Hayakawa K, Mitsuhashi N. Radiation Pneumonitis and Change of Pulmonary Function after Stereotactic Body Radiotherapy for T1N0M0 Non-Small Cell Lung Cancer and Their Impact on Survival in a Supplementary Analysis of Japan Clinical Oncology Group (JCOG) Study JCOG0403. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
11
|
Hashimoto M, Ito Y, Takahashi R, Nakajima M, Matsubayashi F, Saotome S, Kitamura N, Sato T, Kozuka T, Oguchi M. Four-Dimensional Dose Reconstruction for Lung Cancer in Volumetric Modulated Arc Therapy. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2160] [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]
|
12
|
Murakami T, Kurachi H, Nakamura H, Tsuda K, Miyake A, Tomoda K, Hori S, Kozuka T. Cervical Invasion of Endometrial Carcinoma — Evaluation by Parasagittal MR Imaging. Acta Radiol 2016. [DOI: 10.1177/028418519503600307] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Twenty-seven consecutive patients were examined by T2-(1 800/70 ms) and postcontrast T1-weighted (600/15) spin echo (SE) or dynamic (200/15) SE MR imaging to determine the usefulness of parasagittal MR imaging in assessing cervical invasion of endometrial carcinoma. The images were obtained in a direction parallel to the longitudinal axis of the uterus (parasagittal). The cervical epithelium, being hyperintense on the late phase dynamic and postcontrast T1-weighted SE images, had disappeared partially or totally in all 4 patients with cervical invasion. The enhanced cervical epithelium was completely seen in one patient with the tumor protruding into the cervical canal in a polyp-like form without cervical epithelial invasion. The same was also seen in the 22 patients with the tumor remaining in the corpus cavity. The enhanced parasagittal MR images facilitated the evaluation of the extent of the endometrial carcinoma.
Collapse
|
13
|
Ikezoe J, Sone S, Morimoto S, Takashima S, Arisawa J, Hamada S, Nakahara K, Kojiro N, Ito M, Kozuka T. Computed Tomography Reveals Atypical Localization of Benign Mediastinal Tumors. Acta Radiol 2016. [DOI: 10.1177/028418518903000211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Computed tomographic appearances of 147 surgically proven mediastinal tumors (113 benign and 34 malignant lesions) were evaluated paying special attention to their localization or extension. Ten of the 113 benign lesions (9%) showed atypical or unique localization or extension, and were divided into three groups. In the first group, two lymphangiomas and one bronchogenic cyst spread over both the precardiovascular and the retrocardiovascular compartments, mimicking a malignant lesion. In the second group, the single cases of thymic hypertrophy, thymic cyst, schwannoma, and pericardial cyst were located atypically in the retrocardiovascular compartment. In the last group, two esophageal leiomyomas and one esophageal duplication showed upward and downward longitudinal extension beyond the azygos arch and the aortic arch.
Collapse
|
14
|
Abstract
In order to determine the value of sonography (US), in staging cancer of the mobile tongue, 57 patients were studied prospectively. Real-time sector scanners (5 and 7.5 MHz) were used with a submental approach. The findings by US were compared with those obtained by inspection and palpation and in 13 operated patients with the surgical results. US failed to visualize the tumor in 3 of the 57 patients (5%); in 30 patients (53%), the tumor was considered to be of nearly the same size by US and by palpation, but in 17 cases (30%), to be larger by US than by palpation, and in the remaining 7 cases (12%), to be smaller by US. Extension across the midline (8/8), and depth of tumor penetration, or extension to adjacent structures (5/5) were more correctly evaluated by US. We conclude that US is useful for staging work-up of tumors of the mobile tongue.
Collapse
|
15
|
Abstract
Angiomyolipoma, a rare benign liver tumor, was observed in a 50-year-old woman examined with US, CT, MR imaging and angiography. Dynamic studies using CT and MR imaging were valuable in differentiating the disease from hepatocellular carcinoma with fat deposits.
Collapse
|
16
|
Takashima S, Takeuchi N, Morimoto S, Kozuka T, Ohno K. Spontaneous Pneumothorax Caused by Metastatic Hemangioendothelioma. Acta Radiol 2016. [DOI: 10.1177/028418518903000212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A patient with hemangioendothelioma is described, who developed a metastatic pulmonary nodule, subsequently a bullous lesion contiguous to the nodule, and finally spontaneous pneumothorax. In such cases, newly formed bullous lesions may conceal originally visible metastatic foci and can be a potential source of spontaneous pneumothorax.
Collapse
|
17
|
Hirabuki N, Mitomo M, Miura T, Hashimoto T, Kawai R, Kozuka T. External Carotid Artery Embolization of Dural Arteriovenous Malformations Involving the Cavernous Sinus; Outcome and Role of Venous Thrombosis. Acta Radiol 2016. [DOI: 10.1177/028418519003100217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nine patients with dural arteriovenous malformations (AVMs) in the region of the cavernous sinus were treated by means of external carotid artery (ECA) embolization using polyvinyl alcolhol. All AVMs received vascular supply from both the ECA and the internal carotid artery. Seven cases were clinically cured after embolization, while 2 cases with cortical venous drainage and high flow through the shunt were not completely cured. Venous thrombosis was observed in 5 cases before and in 9 after embolization. In 6 cases the drainage pattern changed owing to venous thrombosis. Complete thrombosis of the cavernous sinus was found on a follow-up angiography in 2 cases. Formation of venous thrombosis and occlusion of feeding arteries are crucial factors for success of ECA embolization. Dural AVMs with cortical venous drainage and high flow cannot be relieved by ECA embolization alone owing to difficulty in obtaining thrombosis of the veins.
Collapse
|
18
|
Abstract
One hundred and sixty-one patients with pulmonary metastases were studied with CT. Six of them proved to have endobronchial (intraluminal) metastatic lesions by bronchoscopy. Retrospective analysis of the CT studies showed obstruction and/or narrowing of the bronchi in 5 cases while no lesion was observed in one patient. Although CT can not always demonstrate intraluminal lesions, it should be performed when an endobronchial metastasis from extrathoracic malignancy is seen by bronchoscopy because it will show hilar or mediastinal lymphadenopathy, or single or multiple pulmonary metastases other than the endobronchial lesion.
Collapse
|
19
|
Isaza M, Ikezoe J, Morimoto S, Takashima S, Kadowaki K, Takeuchi N, Sano M, Nakao K, Kozuka T. Computed Tomography and Ultrasonography in Parotid Tumors. Acta Radiol 2016. [DOI: 10.1177/028418518903000103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To determine the most appropriate radiographic approach to parotid tumors, computed tomography (CT) was performed in 65 patients with 33 benign tumors, 19 malignant tumors, 3 abscesses and 10 other lesions with a clinical appearance of tumor. In 22 of the 65 cases CT-sialography and in 26 ultrasonography (US) were also performed. The mass was well recognized on CT without sialography in all patients, and the lesion was also well evaluated in all those examined with US. At CT-sialography the tumor was well shown, but this method made it difficult to differentiate a benign from a malignant lesion, because the character of the delineation and the border of the tumor were difficult to evaluate. It is concluded that US and CT without sialography are satisfactory for evaluating the parotid tumor, and the indication for CT-sialography is limited to those cases in which the tumor is demonstrated on US, but is unclear on conventional CT.
Collapse
|
20
|
Kashiwagi T, Murakami T, Azuma M, Tamaki J, Ishibashi K, Kishida Y, Takei Y, Kawano S, Fusamoto H, Kamada T, Nakamura H, Kozuka T. Three-Dimensional Display of Liver, Spleen, Hepatoma, and Blood Vessels by MR Imaging and Computer Graphics. Acta Radiol 2016. [DOI: 10.1177/028418519403500118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The technique of generating 3-D images from CT and MR data has made progress. Manipulation of the images has become simpler, the processing time shorter, and the quality better. Clinical application of this technique has been performed for images of brain (5, 7, 8) and bone (1, 2, 6), but only a few studies have been done of abdominal organs (3, 4).
Collapse
Affiliation(s)
- T. Kashiwagi
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - T. Murakami
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - M. Azuma
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - J. Tamaki
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - K. Ishibashi
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - Y. Kishida
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - Y. Takei
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - S. Kawano
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - H. Fusamoto
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - T. Kamada
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - H. Nakamura
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| | - T. Kozuka
- Department of Internal Medicine, Osaka Kosei-Nenkin Hospital, and Department of Radiology and First Department of Medicine, Osaka University Hospital, Osaka, Japan
| |
Collapse
|
21
|
Murakami T, Nakamura H, Hori S, Tomoda K, Mitani T, Nakanishi K, Hashimoto T, Tsuda K, Kozuka T, Monden M, Wakasa K. Detection of Viable Tumor Cells in Hepatocellular Carcinoma following Transcatheter Arterial Chemoembolization with Iodized Oil. Acta Radiol 2016. [DOI: 10.1177/028418519303400419] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To evaluate the effect of transcatheter arterial chemoembolization (TACE) with iodized oil for hepatocellular carcinoma (HCC), dynamic turbo-fast low angle shot (turbo-FLASH) (TR/TE/flip angle/TI, 8.5/4.6/10/200) MR imaging with gadopentetate dimeglumine was performed in 10 patients with HCC after TACE with iodized oil and before partial hepatectomy. Immediately after 0.05 mmol/kg b.w. of gadopentetate dimeglumine was administered intravenously, 10 images were obtained in the first 20 s (early phase). Then, one image every 30 s from 1 to 3 min (late phase), and images at 5 min and 7 min (delayed phase) were obtained serially. In the early phase, HCC showed no enhancement in 5 patients, partial hyperintense enhancement in 4, and total hyperintense enhancement in one. Viable regions of the tumor, evaluated at histopathology, showed hyperintense enhancement relative to the surrounding liver parenchyma in the early phase, while necrotic regions showed no enhancement. Both viable and necrotic regions showed lower signal intensities than the surrounding liver parenchyma in both late and delayed phases. By using dynamic turbo-FLASH MR imaging, we were able to accurately evaluate the effect of TACE with iodized oil for HCC in 8 of the 10 patients. In 2 patients, in whom small viable cells were seen in the HCC, viable regions could not be detected with our technique. It is concluded that turbo-FLASH dynamic MR imaging was useful for evaluating the effect of TACE for HCC.
Collapse
|
22
|
Murakami T, Igarashi H, Oi H, Matsushita M, Kim T, Kishimoto H, Nakamura H, Okamura J, Kozuka T. Time-of-Flight MR Angiography of Portal System and Collaterals in Portal Hypertension Using a 2-DFT Fast Spoiled Gradient Recalled Steady-State Precession Technique. Acta Radiol 2016. [DOI: 10.1177/028418519403500614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
MR angiographic examinations were performed in 26 patients. Approximately 30 contiguous fast spoiled GRASS images (8.1/3.1/30°, TR/TE/flip angle) were acquired during single breath-holding for about 35 s, and then new images were reconstructed with maximum intensity projection technique. Spoiled GRASS images (40/12/40) of 2 to 3 slices were taken during breath-holding for about 13 s, and these processes were repeated to obtain about 30 individual images for conventional MR angiography. The new MR angiograms were compared quantitatively and qualitatively with conventional MR angiograms with arterial portography as the gold standard. The new MR angiograms could visualize blood vessels with smooth margins, and provided almost the same anatomic information about the portal vein and collateral vessels as the conventional MR angiograms. Contrast-to-noise ratios between the portal or hepatic vein and liver parenchyma were significantly higher with fast spoiled GRASS images. The new MR angiograms using fast spoiled GRASS images provided useful diagnostic mapping of the collateral venous pathways within a shorter examination time.
Collapse
|
23
|
Ikezoe J, Morimoto S, Akira M, Arisawa J, Takashima S, Tomoda K, Nakanishi K, Kadowaki K, Kozuka T, Shiozaki H, Ogawa Y. Computed Tomography following Endoscopic Sclerotherapy of Esophageal Varices. Acta Radiol 2016. [DOI: 10.1177/028418518702800409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Computed tomography of the chest following endoscopic injection sclerotherapy for esophageal varices was performed in 17 procedures in 13 patients. CT scans were obtained before and within 48 hours after the procedure. CT findings included: esophageal wall thickening; a low-attenuating lesion within the wall of the esophagus with varying appearances, either laminated, localized, or inhomogeneous; a mediastinal lesion; pleural effusion; and various types of pulmonary changes such as atelectasis, pleural-based lesions, dilatation of peripheral pulmonary vessels, and nodular lesions. However, on follow-up CT they had regressed or disappeared. The changes in the mediastinum and pleural space might be caused by direct extension of inflammation from the esophagus, but those in the lungs, especially dilatation of peripheral vessels, may be caused by the sclerosing agent passing to the pulmonary vessels.
Collapse
|
24
|
Noguchi Y, Takashima S, Ikezoe J, Yoshii M, Koide T, Kozuka T. Hyperparathyroidism — Comparison of Flash Imaging with Spin ECHO MR Imaging. Acta Radiol 2016. [DOI: 10.1177/028418519303400619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
MR images of the neck were prospectively studied in 19 patients with hyperparathyroidism. Fast low angle shot (FLASH) sequence was performed in addition to T1- and T2-weighted spin echo (SE) sequences. FLASH images were obtained with 320/12/20° (TR/TE/flip angle) using presaturation technique. TE of 12 ms was chosen to eliminate high signal of fat tissue. In the evaluation of detectability, a combination of T1-weighted SE and FLASH images (T1WI + FLASH) was compared with a combination of T1- and T2-weighted SE images (T1WI + T2WI). MR imaging correctly depicted 20 of 30 abnormal glands on both T1WI + FLASH and T1WI + T2WI. FLASH imaging effectively eliminated high signal of fat tissue. Nineteen abnormal glands demonstrated higher signal than surrounding tissues on FLASH images, whereas 12 glands were high-intense on T2-weighted SE images. We conclude that FLASH imaging provides improved tissue contrast and anatomic delineation and, thus, may replace T2-weighted SE imaging in the neck.
Collapse
|
25
|
Kumai Y, Oguchi M, Miyagi Y, Ito Y, Iwase T, Akiyama F, Yoshida K, Harada A, Okubo H, Asari T, Murofushi K, Toshiyasu T, Kozuka T, Sumi M. EP-1164: Outcomes of postmastectomy radiotherapy in patients with 1 to 3 positive nodes in single institute. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32414-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
26
|
Nakamura Y, Ando Y, Takagi Y, Murata M, Kozuka T, Nakata Y, Hasebe R, Takagi A, Matsushita T, Shima M, Kojima T. Distinct X chromosomal rearrangements in four haemophilia B patients with entire F9 deletion. Haemophilia 2015; 22:433-9. [PMID: 26686734 DOI: 10.1111/hae.12849] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 06/09/2015] [Accepted: 09/14/2015] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Haemophilia B is an X-linked bleeding disorder caused by a coagulation factor IX gene (F9) abnormality. Numerous F9 defects have been identified to date; however, only a few with an entire F9 deletion have been reported in detail. AIM To elucidate the cause of severe haemophilia B, we investigated the precise X chromosome abnormalities in four Japanese patients who did not show all amplifications in F9-specific PCR. METHODS We analysed the patient's genomic DNA using Multiplex ligation-dependent probe amplification (MLPA). To assess the extent of any deletions, we further performed mapping PCRs, inverse PCRs or long-range PCRs and direct sequencing analyses of the X chromosome. RESULTS We detected entire F9 deletions in four haemophilia B patients and identified the precise deleted regions of the X chromosome including F9. Patient 1 had a 149-kb deletion with breakpoints 90-kb upstream and 30-kb downstream from F9. Patients 2 and 3 showed 273-kb and 1.19-Mb deletions respectively. Patient 4 had two deleted regions: a 1663-bp deletion 1.34-Mb upstream from F9 and a 7.2-Mb deletion including F9. These distinct breakpoints found in four different patients suggest that the mechanism of X chromosome deletion may be different between individuals. Non-allelic homologous recombination (NAHR), microhomology-mediated break-induced replication (MMBIR) or fork stalling and template switching (FoSTeS) may occur in respective X chromosomes of the four haemophilia B patients analysed. CONCLUSIONS We identified diverse X chromosomal rearrangements in four haemophilia B patients, which might be caused by distinct mechanisms of genomic rearrangement.
Collapse
Affiliation(s)
- Y Nakamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Ando
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Murata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - T Kozuka
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Nakata
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - R Hasebe
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Matsushita
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | - M Shima
- Department of Paediatric, Nara Medical University, Nara, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
27
|
Shioyama Y, Nagata Y, Komiyama T, Takayama K, Shibamoto Y, Ueki N, Yamada K, Kozuka T, Kimura T, Matsuo Y. Multi-institutional Retrospective Study of Stereotactic Body Radiation Therapy for Stage I Small Cell Lung Cancer: Japan Radiation Oncology Study Group (JROSG). Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.243] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
28
|
Takahashi K, Kozuka T, Anegawa A, Nagatani A, Mimura T. Development and Application of a High-Resolution Imaging Mass Spectrometer for the Study of Plant Tissues. Plant Cell Physiol 2015; 56:1329-38. [PMID: 26063395 DOI: 10.1093/pcp/pcv083] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/30/2015] [Indexed: 05/27/2023]
Abstract
Matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging (MSI) or imaging mass spectrometry (imaging MS) has been a powerful tool to map the spatial distribution of molecules on the surface of biological materials. This technique has frequently been applied to animal tissue slices for the purpose of mapping proteins, peptides, lipids, sugars or small metabolites to find disease-specific biomarkers or to study drug metabolism. Recently, it has also been applied to intact plant tissues or thin slices thereof using commercial mass spectrometers. The present work is concerned with the refinement of MALDI/laser desorption/ionization (LDI)-Fourier transform ion cyclotron resonance (FTICR)-MS incorporating certain specific features namely, ultra-high mass resolution (>100,000), ultra-high molecular mass accuracy (<1 p.p.m.) and high spatial resolution (<10 µm) for imaging MS of plant tissues. Employing an in-house built mass spectrometer, the imaging MS analysis of intact Arabidopsis thaliana tissues, namely etiolated seedlings and roots of seedlings, glued to a small transparent ITO (indium tin oxide)-coated conductive glass was performed. A matrix substance was applied to the vacuum-dried intact tissues by sublimation prior to the imaging MS analysis. The images of various small metabolites representing their two-dimensional distribution on the dried intact tissues were obtained with or without different matrix substances. The effects of MALDI matrices on the ionization of small metabolites during imaging MS acquisition are discussed.
Collapse
Affiliation(s)
- Katsutoshi Takahashi
- National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8568 Japan
| | - Toshiaki Kozuka
- Kyoto University, Kyoto, 606-8502 Japan Hiroshima University, Hiroshima, 739-8526 Japan These authors contributed equally to this work
| | - Aya Anegawa
- Kobe University, Kobe, 657-8501 Japan These authors contributed equally to this work
| | | | | |
Collapse
|
29
|
Murofushi K, Kitamura N, Yagi Y, Kozuka T, Takeshima N, Sakurai H, Oguchi M. Early Outcomes and Dose-Volume Parameters for CT-Based Treatment Planning in Brachytherapy for Cervical Cancer With Severe Vaginal Invasion or Vaginal Cancer. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.1490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
30
|
Suzuki S, Chino A, Fukui I, Hayashi T, Kozuka T, Suganuma T, Kishihara T, Tamegai Y, Fujisaki J, Oguchi M, Yonese J, Igarashi M. Successful Use of Endoscopic Argon Plasma Coagulation for Hemorrhagic Radiation Cystitis: A Case Report. Jpn J Clin Oncol 2014; 44:692-695. [DOI: 10.1093/jjco/hyu066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
31
|
Hashimoto M, Nishio T, Haga A, Hanada T, Kabuki S, Kozuka T, Oguchi M. SU-E-CAMPUS-T-03: Four-Dimensional Dose Distribution Measurement Using Plastic Scintillator. Med Phys 2014. [DOI: 10.1118/1.4889004] [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: 11/07/2022] Open
|
32
|
Takase M, Mizoguchi T, Kozuka T, Tsukaya H. The unique function of the Arabidopsis circadian clock gene PRR5 in the regulation of shade avoidance response. Plant Signal Behav 2013; 8:e23534. [PMID: 23333981 PMCID: PMC7030191 DOI: 10.4161/psb.23534] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 05/12/2023]
Abstract
Shade avoidance response (S.A.R) is regulated by light and circadian clock. Circadian clock controls S.A.R by the transcriptional regulation of positive regulators of S.A.R, PIF4 and PIF5, to prevent plants from responding to 'light' of dark period. Thus, in many cases, deficits in circadian clock appear in abnormalities of hypocotyl and/or petiole elongation. Previously, interesting phenomena were reported that the triple mutants of PSEUDO RESPONSE REGULATORS9, 7 and 5, which are clock components, show longer petioles and smaller leaves under light/dark cycle than those under continuous lighting. These S.A.R-like phenotypes cannot be explained by their hyposensitivity to red light. We demonstrated detailed analyses of this mutant to reveal the leaf-specific S.A.R regulated by circadian clock. Expression analyses of S.A.R-related genes suggested that PRR5 functions as a repressor of S.A.R. Morphological analyses of leaves under different light condition revealed that PRR5 is involved in the inhibition of leaf expansion in S.A.R.
Collapse
Affiliation(s)
- Masahide Takase
- Department of Biological Science; Graduate School of Science; The University of Tokyo; Tokyo, Japan
| | - Tsuyoshi Mizoguchi
- Department of Life Science; International Christian University; Mitaka; Tokyo, Japan
| | - Toshiaki Kozuka
- Department of Botany; Graduate School of Science; Kyoto University; Kyoto, Japan
| | - Hirokazu Tsukaya
- Department of Biological Science; Graduate School of Science; The University of Tokyo; Tokyo, Japan
- Correspondence to: Hirokazu Tsukaya,
| |
Collapse
|
33
|
Kozuka T, Suetsugu N, Wada M, Nagatani A. Antagonistic regulation of leaf flattening by phytochrome B and phototropin in Arabidopsis thaliana. Plant Cell Physiol 2013; 54:69-79. [PMID: 23054390 DOI: 10.1093/pcp/pcs134] [Citation(s) in RCA: 13] [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] [Indexed: 05/08/2023]
Abstract
Light is one of the most important environmental factors regulating the growth and development of leaves. As the primary photosynthetic organs, leaves have a laminar structure in many dicotyledonous plants. The regulation of leaf flatness is a key mechanism for the efficient absorption of light under low light conditions. In the present study, we demonstrated that phytochrome B (phyB) promoted the development of curled leaves. Wild-type leaves gently curled downwards under white light, whereas the phyB-deficient mutant (phyB) constitutively exhibited flatter leaves. In the wild type, leaf flattening was promoted by end-of-day far-red light (EODFR) treatment, which rapidly eliminates the active Pfr phytochrome. Interestingly, the curled-leaf phenotype in a phototropin-deficient mutant was almost completely suppressed by the phyB mutation as well as by EODFR. Thus, phototropin promotes leaf flattening by suppressing the leaf-curling activity of phyB. We examined the downstream components of phyB and phototropin to assess their antagonistic regulation of leaf flatness further. Consequently, we found that a phototropin signaling transducer, NON-PHOTOTROPIC HYPOCOTYL 3 (NPH3), was required to promote leaf flattening in phyB. The present study provides new insights into a mechanism in which leaf flatness is regulated in response to different light environmental cues.
Collapse
Affiliation(s)
- Toshiaki Kozuka
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto, 606-8502 Japan
| | | | | | | |
Collapse
|
34
|
Hashimoto M, Haga A, Takahashi R, Nakajima M, Hashimoto T, Saotome S, Sato T, Nakagawa K, Kozuka T, Oguchi M. Verification of MLC Position Using Electric Portal Imaging Device During VMAT Delivery. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
35
|
Murofushi K, Kitamura N, Machida H, Kozuka T, Takeshima N, Takizawa K, Sakurai H, Oguchi M. The Impact of Vicryl Mesh Sheet Placed on Pelvic Wall for Reducing the Irradiated Bowel Volume in VMAT of Cervical Cancer: Planning Study. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
36
|
Takahashi R, Hashimoto M, Matsubayashi F, Nakajima M, Saotome S, Kitamura N, Sato T, Eba J, Kozuka T, Oguchi M. Direct Measurement of 2-dimensional Dosimetric Leaf Gap Distribution Using Electric Portal Imaging Device. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
37
|
Nishimura Y, Harada H, Soejima T, Tsujino K, Hayakawa K, Kozuka T, Tanaka M, Sasaki T, Yamamoto N, Nakagawa K. Phase II Study of Nimotuzumab in Combination With Concurrent Chemoradiation Therapy (CRT) in Patients With Locally Advanced Non-small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Matsuo Y, Ishikura S, Shibata T, Kokubo M, Karasawa K, Kozuka T, Tateoka K, Anai S, Nagata Y, Hiraoka M. Dose-Volume Analysis in a Phase II Study of Stereotactic Body Radiation Therapy for cT1N0M0 Non-small Cell Lung Cancer (JCOG0403): Impact of Dose Calculation Algorithm with Heterogeneity Correction on Local Control in Operable Patients. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
39
|
Murofushi K, Oguchi M, Kozuka T, Sakurai H. Radiation-induced Bronchiolitis Obliterans Organizing Pneumonia Syndrome in Breast Cancer Patients. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.373] [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: 10/15/2022]
|
40
|
Toshiyasu T, Furuta R, Miyazawa K, Eba J, Asari T, Murobushi K, Kozuka T, Ishikawa Y, Oguchi M. Histopathologic and Immunophenotypic Features of Oropharyngeal Carcinomas. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1339] [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]
|
41
|
Kozuka T, Kong SG, Doi M, Shimazaki KI, Nagatani A. Tissue-autonomous promotion of palisade cell development by phototropin 2 in Arabidopsis. Plant Cell 2011; 23:3684-95. [PMID: 21972260 PMCID: PMC3229143 DOI: 10.1105/tpc.111.085852] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 07/24/2011] [Accepted: 09/15/2011] [Indexed: 05/20/2023]
Abstract
Light is an important environmental information source that plants use to modify their growth and development. Palisade parenchyma cells in leaves develop cylindrical shapes in response to blue light; however, the photosensory mechanism for this response has not been elucidated. In this study, we analyzed the palisade cell response in phototropin-deficient mutants. First, we found that two different light-sensing mechanisms contributed to the response in different proportions depending on the light intensity. One response observed under lower intensities of blue light was mediated exclusively by a blue light photoreceptor, phototropin 2 (PHOT2). Another response was elicited under higher intensities of light in a phototropin-independent manner. To determine the tissue in which PHOT2 perceives the light stimulus to regulate the response, green fluorescent protein (GFP)-tagged PHOT2 (P2G) was expressed under the control of tissue-specific promoters in the phot1 phot2 mutant background. The results revealed that the expression of P2G in the mesophyll, but not in the epidermis, promoted palisade cell development. Furthermore, a constitutively active C-terminal kinase fragment of PHOT2 fused to GFP (P2CG) promoted the development of cylindrical palisade cells in the proper direction without the directional cue provided by light. Hence, in response to blue light, PHOT2 promotes the development of cylindrical palisade cells along a predetermined axis in a tissue-autonomous manner.
Collapse
Affiliation(s)
- Toshiaki Kozuka
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Sam-Geun Kong
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Michio Doi
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan
| | - Ken-ichiro Shimazaki
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 812-8581, Japan
| | - Akira Nagatani
- Department of Botany, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
- Address correspondence to
| |
Collapse
|
42
|
Kozuka T, Kobayashi J, Horiguchi G, Demura T, Sakakibara H, Tsukaya H, Nagatani A. Involvement of auxin and brassinosteroid in the regulation of petiole elongation under the shade. Plant Physiol 2010; 153:1608-18. [PMID: 20538889 PMCID: PMC2923899 DOI: 10.1104/pp.110.156802] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Accepted: 06/04/2010] [Indexed: 05/18/2023]
Abstract
Plants grown under a canopy recognize changes in light quality and modify their growth patterns; this modification is known as shade avoidance syndrome. In leaves, leaf blade expansion is suppressed, whereas petiole elongation is promoted under the shade. However, the mechanisms that control these responses are largely unclear. Here, we demonstrate that both auxin and brassinosteroid (BR) are required for the normal leaf responses to shade in Arabidopsis (Arabidopsis thaliana). The microarray analysis of leaf blades and petioles treated with end-of-day far-red light (EODFR) revealed that almost half of the genes induced by the treatment in both parts were previously identified as auxin-responsive genes. Likewise, BR-responsive genes were overrepresented in the EODFR-induced genes. Hence, the auxin and BR responses were elevated by EODFR treatment in both leaf blades and petioles, although opposing growth responses were observed in these two parts. The analysis of the auxin-deficient doc1/big mutant and the BR-deficient rot3/cyp90c1 mutant further indicates that auxin and BR were equally required for the normal petiole elongation response to the shade stimulus. In addition, the spotlight irradiation experiment revealed that phytochrome in leaf blades but not that in petioles regulated petiole elongation, which was probably mediated through regulation of the auxin/BR responses in petioles. On the basis of these findings, we conclude that auxin and BR cooperatively promote petiole elongation in response to the shade stimulus under the control of phytochrome in the leaf blade.
Collapse
Affiliation(s)
- Toshiaki Kozuka
- Department of Botany, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| | | | | | | | | | | | | |
Collapse
|
43
|
Kozuka T, Harada H, Nishio M, Murakami H, Ohyanagi F, Ishikura S, Horiike A, Eba J, Nishimura T, Yamamoto N. A phase I dose-escalation study using three-dimensional conformal radiotherapy with concurrent cisplatin and S-1 in patients with stage III non-small cell lung cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7086] [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: 11/20/2022] Open
|
44
|
Satouchi M, Sekine I, Nishio M, Kozuka T, Niho S, Nihei K, Yamamoto N, Harada H, Ishikura S, Tamura T. Feasibility study of concurrent etoposide and cisplatin plus accelerated hyperfractionated thoracic radiotherapy followed by amrubicin and cisplatin for limited-disease small cell lung cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e18057] [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: 11/20/2022] Open
|
45
|
Kashiwagi N, Nakanishi K, Kozuka T, Sato Y, Tanaka K, Tsukaguchi I, Uemura H, Fujii T, Yoshino K, Tomiyama N. Vascular supply with angio-CT for superselective intra-arterial chemotherapy in advanced maxillary sinus cancer. Br J Radiol 2010; 83:171-8. [PMID: 20139264 DOI: 10.1259/bjr/16954991] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Recently popularised, the combined angiography and CT (angio-CT) system is useful for correctly identifying the feeding arteries and their perfusion in various organs. We applied this system for advanced maxillary cancer to expose its feeding arteries and their supplying territories. In addition to the maxillary artery, extramaxillary feeding arteries were usually observed, including the ophthalmic, accessory meningeal, facial, transverse facial and ascending palatine arteries. These extramaxillary feeding arteries exhibited uniform tendencies, depending on the site of extramaxillary tumour extension.
Collapse
Affiliation(s)
- N Kashiwagi
- Department of Radiology, Osaka-Rosai-Hospital, 1179-3 Nakasone-chou, Kita-ku, Sakai-city 591-8025 Osaka.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kozuka T, Harada H, Nishio M, Murakami H, Ohyanagi F, Ishikura S, Horiike A, Morota M, Nishimura T, Yamamoto N. A Phase I Dose Escalation Study using Three-dimensional Conformal Radiotherapy with Concurrent Cisplatin and S-1 in Patients with Stage III Non–small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
47
|
Tachiiri H, Murai T, Kotake T, Kozuka T, Nosaki T, Machi S. Veränderungen der Thoraxorgane bei laryngektomierten Patienten. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1228189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
48
|
Ohyanagi F, Yamamoto N, Horiike A, Harada H, Kozuka T, Murakami H, Gomi K, Takahashi T, Morota M, Nishimura T, Endo M, Nakamura Y, Tsuya A, Horai T, Nishio M. Phase II trial of S-1 and cisplatin with concurrent radiotherapy for locally advanced non-small-cell lung cancer. Br J Cancer 2009; 101:225-31. [PMID: 19603031 PMCID: PMC2720205 DOI: 10.1038/sj.bjc.6605152] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 05/22/2009] [Accepted: 06/01/2009] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND To assess the efficacy and safety of S-1 and cisplatin with concurrent thoracic radiation for unresectable stage III non-small-cell lung cancer (NSCLC). METHODS Eligible patients were 20-74 years old and had histologically or cytologically confirmed NSCLC, a performance status of 0-1, and no prior chemotherapy. Patients were treated with cisplatin (60 mg m(-2) on day 1) and S-1 (orally at 40 mg m(-2) per dose, b.i.d., on days 1-14), with the treatment repeated every 4 weeks for four cycles. Beginning on day 2, a 60-Gy thoracic radiation dose was delivered in 30 fractions. RESULTS Of 50 patients, 48 were eligible. Partial response was observed in 42 patients (87.5%; 95% CI: 79.1-96.9%). This regimen was well tolerated. Common toxicities included grade 3/4 neutropenia (32%), grade 3/4 leukopenia (32%), grade 3/4 thrombocytopenia (4%), grade 3 febrile neutropenia (6%), grade 3 oesophagitis (10%), and grade 3 pneumonitis (5%). Median progression-free survival was 12.0 months and median overall survival was 33.1 months. The 1- and 2-year survival rates were 89.5 and 56%, respectively. CONCLUSION This chemotherapy regimen with concomitant radiotherapy is a promising treatment for locally advanced NSCLC because of its high response rates, good survival rates, and mild toxicities.
Collapse
Affiliation(s)
- F Ohyanagi
- Thoracic Oncology Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - N Yamamoto
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - A Horiike
- Thoracic Oncology Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - H Harada
- Division of Radiation Oncology, Shizuoka Cancer Center Hospital, Shizuoka, Japan 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka, 411-8777, Japan
| | - T Kozuka
- Department of Radiation Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - H Murakami
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - K Gomi
- Department of Radiation Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - T Takahashi
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - M Morota
- Department of Radiation Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - T Nishimura
- Department of Radiation Oncology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - M Endo
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - Y Nakamura
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - A Tsuya
- Department of Thoracic Oncology, Shizuoka Cancer Center Hospital, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
| | - T Horai
- Thoracic Oncology Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - M Nishio
- Thoracic Oncology Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| |
Collapse
|
49
|
Harada H, Nishio M, Murakami H, Ohyanagi F, Kozuka T, Ishikura S, Horiike A, Morota M, Nishimura T, Yamamoto N. Radiotherapy (RT) dose escalation study with concurrent cisplatin and S-1 in patients with inoperable stage III non-small cell lung cancer (NSCLC). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.7542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7542 Background: Standard treatment for inoperable stage III NSCLC is concurrent chemoradiotherapy using 3-D conformal RT to a total dose of 60 Gy, but the outcome is still dismal with median survival time (MST) of 16 months and 5-year survival of 15%. We conducted a phase II trial using cisplatin, S-1 and concurrent RT of 60 Gy (J Clin Oncol 2008;26:a7556). MST (33months) was encouraging, however, local failure rate with this trial remained still high. The purpose of this study was to establish the recommended dose (RD) of RT with concurrent cisplatin and S-1. Methods: The eligibility criteria were: histologically or cytologically proven NSCLC, 20–75 years old, performance status 0–1, without any prior chemotherapy or RT. Patients were treated with cisplatin (60 mg/m2 on day 1) and S-1 (orally at 40 mg/m2/dose b.i.d., on days 1–14) repeated every 4 weeks for 4 cycles and RT was started on day 1. Radiation dose was escalated from 66 Gy in 33 fractions (Arm 1) to 70 Gy in 35 fractions (Arm 2), then 74 Gy in 37 fractions (Arm 3). The dose was to be escalated if DLTs were observed in 2 or less patients. The target volume of RT included primary tumor and metastatic node only and elective nodal irradiation was not performed. Dose constraints to the organs at risk were: the lung, V20 < 30%; the esophagus, mean dose < 34 Gy and V55 < 30%; the spinal cord, max dose < 50 Gy. Results: Six patients in each arm were enrolled. Two patients in Arm 1 experienced DLTs: one patient developed grade 3 febrile neutropenia, grade 3 mucositis in oral cavity and grade 3 diarrhea and one patient developed grade 3 febrile neutropenia. One patient in Arm 3 has not been completed evaluation yet. Otherwise no DLT was observed. Conclusions: The radiation dose of 74 Gy in 37 fractions with concurrent cisplatin and S-1 seemed to be tolerable and was judged to be the RD. This study is still open to accrue another six patients to confirm the safety of the RD. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- H. Harada
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - M. Nishio
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - H. Murakami
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - F. Ohyanagi
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - T. Kozuka
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - S. Ishikura
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - A. Horiike
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - M. Morota
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - T. Nishimura
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| | - N. Yamamoto
- Shizuoka Cancer Center, Nagaizumi-cho, Sunto-gun, Shizuoka, Japan; Cancer Institute Hospital, JFCR, Tokyo, Japan; National Cancer Center, Tokyo, Japan
| |
Collapse
|
50
|
Fujimoto T, Tsuda T, Yamamoto M, Tarutani M, Natsuaki M, Minami S, Ito T, Kozuka T, Yamanishi K. Cutaneous malignant fibrous histiocytoma (undifferentiated pleomorphic sarcoma) arising in a chronic scalp ulcer of a patient with non-bullous congenital ichthyosiform erythroderma. J Eur Acad Dermatol Venereol 2009; 23:202-3. [DOI: 10.1111/j.1468-3083.2008.02780.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|