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Hirai Y, Iguchi H, Fusamoto A, Yata Y, Ohashi T, Nishimura Y. EP02.03-017 Novel Intraoperative CT-Guided Marking Using O-Arm in Video-Assisted Thoracoscopic Surgery. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.373] [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: 10/14/2022]
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Yamaguchi T, Makiguchi T, Nakamura H, Yamatsu Y, Hirai Y, Shoda K, Suzuki K, Kim M, Kurozumi S, Motegi SI, Shirabe K, Yokoo S. Impact of muscle volume loss on acute oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection. Int J Oral Maxillofac Surg 2021; 50:1195-1202. [PMID: 33414037 DOI: 10.1016/j.ijom.2020.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 06/20/2020] [Revised: 09/25/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022]
Abstract
This study evaluated the association between skeletal muscle mass depletion and severe oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection. Skeletal muscle mass was evaluated in 60 patients using the skeletal muscle index, which was based on skeletal muscle cross-sectional area (on computed tomography) at the level of the third lumbar vertebra. In accordance with the grading criteria of the Radiation Therapy Oncology Group, patients with a grade ≥3 were defined as having severe oral mucositis. Multivariate logistic regression analysis was used to evaluate independent risk factors for severe oral mucositis. Eleven patients (18.3%) were diagnosed with low skeletal muscle mass. Severe oral mucositis occurred in 17 (28.3%) patients, and the mean skeletal muscle index was 42.8 cm2/m2. A low skeletal muscle mass (hazard ratio 18.1; P=0.001) and a chemotherapy regimen consisting of 5-fluorouracil and cisplatin (versus cisplatin only) (hazard ratio 5.5; P=0.015) were independent risk factors for severe oral mucositis. Future prospective studies are warranted to identify effective pre- and perioperative exercises and nutrition programmes to increase low skeletal muscle mass and reduce the incidence of severe oral mucositis in patients undergoing concurrent chemoradiotherapy after oral cancer resection.
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Affiliation(s)
- T Yamaguchi
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - T Makiguchi
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan.
| | - H Nakamura
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Y Yamatsu
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Y Hirai
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - K Shoda
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - K Suzuki
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - M Kim
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - S Kurozumi
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - S I Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - K Shirabe
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - S Yokoo
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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Hirai H, Hirai Y, Udono T, Matsubayashi K, Tosi AJ, Koga A. Structural variations of subterminal satellite blocks and their source mechanisms as inferred from the meiotic configurations of chimpanzee chromosome termini. Chromosome Res 2019; 27:321-332. [PMID: 31418128 DOI: 10.1007/s10577-019-09615-z] [Citation(s) in RCA: 2] [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: 05/21/2019] [Revised: 07/09/2019] [Accepted: 07/29/2019] [Indexed: 10/26/2022]
Abstract
African great apes have large constitutive heterochromatin (C-band) blocks in subtelomeric regions of the majority of their chromosomes, but humans lack these. Additionally, the chimpanzee meiotic cell division process demonstrates unique partial terminal associations in the first meiotic prophase (pachytene). These are likely formed as a result of interaction among subtelomeric C-band blocks. We thus conducted an extensive study to define the features in the subtelomeric heterochromatic regions of chimpanzee chromosomes undergoing mitotic metaphase and meiotic cell division. Molecular cytogenetic analyses with probes of both subterminal satellite DNA (a main component of C-band) and rDNA demonstrated principles of interaction among DNA arrays. The results suggest that homologous and ectopic recombination through persistent subtelomeric associations (post-bouquet association observed in 32% of spermatocytes in the pachytene stage) appears to create variability in heterochromatin patterns and simultaneously restrain subtelomeric genome polymorphisms. That is, the meeting of non-homologous chromosome termini sets the stage for ectopic pairing which, in turn, is the mechanism for generating variability and genomic dispersion of subtelomeric C-band blocks through a system of concerted evolution. Comparison between the present study and previous reports indicated that the chromosomal distribution rate of sutelomeric regions seems to have antagonistic correlation with arm numbers holding subterminal satellite blocks in humans, chimpanzees, and gorillas. That is, the increase of subterminal satellite blocks probably reduces genomic diversity in the subtelomeric regions. The acquisition vs. loss of the subtelomeric C-band blocks is postulated as the underlying engine of this chromosomal differentiation yielded by meiotic chromosomal interaction.
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Affiliation(s)
- Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, 484-8506, Japan. .,The Unit of Human-Nature Interlaced Life Science, Kyoto University Research Coordination Alliance, Kyoto, Japan.
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, 484-8506, Japan
| | - Toshifumi Udono
- Kumamoto Sanctuary, Wildlife Research Center, Kyoto University, Uto, Kumamoto, Japan
| | | | - Anthony J Tosi
- Department of Anthropology and School of Biomedical Science, Kent State University, Kent, OH, 44242, USA
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama, Aichi, 484-8506, Japan
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Hirai H, Go Y, Hirai Y, Rakotoarisoa G, Pamungkas J, Baicharoen S, Jahan I, Sajuthi D, Tosi AJ. Considerable Synteny and Sequence Similarity of Primate Chromosomal Region VIIq31. Cytogenet Genome Res 2019; 158:88-97. [PMID: 31220833 DOI: 10.1159/000500796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2009] [Indexed: 11/19/2022] Open
Abstract
Human chromosome 7 has been the focus of many behavioral, genetic, and medical studies because it carries genes related to cancer and neurodevelopment. We examined the evolution of the chromosome 7 homologs, and the 7q31 region in particular, using chromosome painting analyses and 3 paint probes derived from (i) the whole of chimpanzee chromosome VII (wcVII), (ii) human 7q31 (h7q31), and (iii) the chimpanzee homolog VIIq31 (cVIIq31). The wcVII probe was used instead of the whole human chromosome 7 because the chimpanzee contains additional C-bands and revealed large areas of synteny conservation as well as fragmentation across 20 primate species. Analyses focusing specifically on the 7q31 homolog and vicinity revealed considerable conservation across lineages with 2 exceptions. First, the probes verified an insertion of repetitive sequence at VIIq22 in chimpanzees and bonobos and also detected the sequence in most subtelomeres of the African apes. Second, a paracentric inversion with a breakpoint in the cVIIq31 block was found in the common marmoset, confirming earlier studies. Subsequent in silico comparative genome analysis of 17 primate species revealed that VIIq31.1 is more significantly conserved at the sequence level than other regions of chromosome VII, which indicates that its components are likely responsible for critical shared traits across the order, including conditions necessary for proper human development and wellbeing.
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Koga A, Tanabe H, Hirai Y, Imai H, Imamura M, Oishi T, Stanyon R, Hirai H. Co-Opted Megasatellite DNA Drives Evolution of Secondary Night Vision in Azara's Owl Monkey. Genome Biol Evol 2017; 9:1963-1970. [PMID: 28810713 PMCID: PMC5553404 DOI: 10.1093/gbe/evx142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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] [Accepted: 07/26/2017] [Indexed: 11/12/2022] Open
Abstract
Owl monkeys (genus Aotus) are the only taxon in simian primates that consists of nocturnal or otherwise cathemeral species. Their night vision is superior to that of other monkeys, apes, and humans but not as good as that of typical nocturnal mammals. This incomplete night vision has been used to conclude that these monkeys only secondarily adapted to a nocturnal lifestyle, or to their cathemeral lifestyle that involves high night-time activity. It is known that the rod cells of many nocturnal mammals possess a unique nuclear architecture in which heterochromatin is centrally located. This "inverted nuclear architecture", in contrast with "conventional nuclear architecture", provides elevated night vision by passing light efficiently to the outer segments of photoreceptors. Owl monkey rod cells exhibit an intermediate chromatin distribution, which may provide them with less efficient night vision than other nocturnal mammals. Recently, we identified three megasatellite DNAs in the genome of Azara's owl monkey (Aotus azarae). In the present study, we show that one of the three megasatellite DNAs, OwlRep, serves as the primary component of the heterochromatin block located in the central space of the rod nucleus in A. azarae. This satellite DNA is likely to have emerged in the Aotus lineage after its divergence from those of other platyrrhini taxa and underwent a rapid expansion in the genome. Our results indicate that the heterochromatin core in the A. azarae rod nucleus was newly formed in A. azarae or its recent ancestor, and supports the hypothesis that A. azarae, and with all probability other Aotus species, secondarily acquired night vision.
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Affiliation(s)
- Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Hideyuki Tanabe
- Department of Evolutionary Studies of Biosystems, SOKENDAI (The Graduate University for Advanced Studies), Hayama, Japan
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Hiroo Imai
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | | | - Takao Oishi
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | | | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Japan
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Hirai Y, Yoshimasu T, Fusamoto A, Aoishi Y, Yata Y, Nishiguchi H, Ohashi T, Miyasaka M, Kawago M, Oura S, Nishimura Y. P1.03-033 Long-Term Outcome of Histoculture Drug Response Assay Guided Adjuvant Chemotherapy in Patients with Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.837] [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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Ohashi T, Yoshimasu T, Kawago M, Hirai Y, Miyasaka M, Yata Y, Aoishi Y, Oura S, Nishimura Y. P2.16-010 Removing the Chest Tube on the First Day after Surgery Does Not Contribute to the Early Discharge from the Hospital. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1419] [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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Hirai H, Hirai Y, Morimoto M, Kaneko A, Kamanaka Y, Koga A. Night Monkey Hybrids Exhibit De Novo Genomic and Karyotypic Alterations: The First Such Case in Primates. Genome Biol Evol 2017; 9:945-955. [PMID: 28369492 PMCID: PMC5388293 DOI: 10.1093/gbe/evx058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Accepted: 03/21/2017] [Indexed: 12/28/2022] Open
Abstract
Using molecular chromosomal analyses, we discovered night monkey hybrids produced in captivity from matings between a female Aotus azarae boliviensis (2n = 50) and a male Aotus lemurinus griseimembra (2n = 53). The parents produced seven offspring in total, including one male and six females-a pattern consistent with Haldane's rule. Chromosomal studies were conducted on four of the hybrid offspring. Two of them showed relatively "simple" mixture karyotypes, including different chromosome numbers (2n = 51, 52), which were formed because of a heteromorphic autosome pair in the father (n = 26, 27). The other two hybrid monkeys exhibited de novo genomic and karyotypic alterations. Detailed analysis of the alterations revealed that one individual carried a mixture karyotype of the two parental species and an X chromosome trisomy (53,XXX). The second individual displayed trisomy of chromosome 18 (52,XX,+18) and a reciprocal translocation between autosomes 21 and 23 (52,XX,+18,t(21;23)). Interestingly, the second monkey exhibited mosaicism among blood cells (mos52,XX,+18[87]/52,XX,+18,t(21;23)[85]), but only a single karyotype (52,XX,+18) in skin fibroblast cells. The X- and 18-trisomies were derived from a doubling of the mother's chromosomes in early embryonic cell division, and the reciprocal translocation likely developed in the bone marrow of the offspring, considering that it was observed only in blood cells. Such occurrence of trisomies in hybrid individuals is a unique finding in placental mammals.
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Affiliation(s)
- Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Mayumi Morimoto
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Akihisa Kaneko
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Yoshiro Kamanaka
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
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Baicharoen S, Hirai Y, Srikulnath K, Kongprom U, Hirai H. Hypervariability of Nucleolus Organizer Regions in Bengal Slow Lorises, Nycticebus bengalensis (Primates, Lorisidae). Cytogenet Genome Res 2016; 149:267-273. [PMID: 27648559 DOI: 10.1159/000449145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2016] [Indexed: 11/19/2022] Open
Abstract
Slow lorises are a cryptic species complex, and thus genetic markers are needed to identify distinct evolutionary lineages or species. We examined the nucleolus organizer regions (NORs) of Bengal slow lorises (Nycticebus bengalensis) using FISH with 18S rDNA (rDNA-FISH) and silver nitrate staining (Ag-NOR stain). Ten individuals of the putatively single species N. bengalensis showed higher variability in localization than 3 other congeners, though their overall karyotypes were similar. The rDNA-FISH analysis detected a total of 18 loci, in contrast to previous studies of other slow loris species that revealed far fewer (6-10) loci. Eight of the 18 loci detected in the present analysis were found to be semi-stable localizations at 4 different chromosomes, while 10 were found to be unstable localizations at 5 other chromosomes. The semi-stable locations showed occasional presence/absence of variations for rDNA-FISH, and unstable locations were polymorphic among individuals, contributing to the higher variability of NORs in this taxon. We hypothesize that the larger numbers of rDNA loci found in N. bengalensis were introduced by genomic dispersion through ectopic recombination in association with terminal regions including rDNA. Such differences are potentially very powerful chromosomal markers to be used in species identification and conservation.
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Kaida A, Iritani N, Yamamoto S, Kanbayashi D, Hirai Y, Kohdera U, Togawa M, Amo K, Shiomi M, Nishigaki T, Kageyama T, Kubo H. Single genetic clades of EV-D68 strains in 2010, 2013, and 2015 in Osaka City, Japan. J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Norimatsu Y, Yamaguchi T, Taira T, Abe H, Sakamoto H, Takenaka M, Yanoh K, Yoshinobu M, Irino S, Hirai Y, Kobayashi TK. Inter-observer reproducibility of endometrial cytology by the Osaki Study Group method: utilising the Becton Dickinson SurePath ™ liquid-based cytology. Cytopathology 2016; 27:472-478. [PMID: 27109167 DOI: 10.1111/cyt.12342] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 01/21/2016] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The purpose of the present study was to evaluate the reproducibility of the cytological diagnosis of endometrial lesions by the Osaki Study Group (OSG) method of new cytological diagnostic criteria using BD SurePath™ (SP)-liquid-based cytology (LBC). METHODS This cytological classification using the OSG method consists of six categories: (i) normal endometrium (NE), (ii) endometrial glandular and stromal breakdown (EGBD), (iii) atypical endometrial cells, cannot exclude atypical endometrial hyperplasia or more (ATEC-A), (iv) adenocarcinoma including atypical endometrial hyperplasia or malignant tumour (Malignancy), (v) endometrial hyperplasia without atypia (EH) and (vi) atypical endometrial cells of undetermined significance (ATEC-US). For this study, a total 244 endometrial samplings were classified by two academic cytopathologists as follows: 147 NE cases , 36 EGBD cases , 47 Malignant cases, eight ATEC-A cases, two EH cases and four ATEC-US cases. To confirm the reproducibility of the diagnosis and to study the inter- and intra-observer agreement further, a second review round followed at 3-month intervals, which included three additional cytopathologists. RESULTS The inter-observer agreement of NE classes improved progressively from 'good to fair' to 'excellent', with values increasing from 0.70 to 0.81. Both EGBD and Malignancy classes improved progressively from 'good to fair' to 'excellent', with values increasing from 0.62-0.63 to 0.84-0.95, respectively. The overall intra-observer agreement between the first and the second rounds was 'good to fair' to 'excellent', with values changing from 0.79 to 0.85. All kappa improvements were significant (P < 0.0001). CONCLUSION In this study, it seemed that the use of the OSG method as the new diagnostic criteria for SP-LBC preparation, may be a valid method to improve the precision (reproducibility) of endometrial cytology.
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Affiliation(s)
- Y Norimatsu
- Faculty of Health Sciences, Department of Medical Technology, Ehime Prefectural University of Health Sciences, Ehime, Japan
| | - T Yamaguchi
- Department of Pathology, Kurume University Hospital, Fukuoka, Japan
| | - T Taira
- Department of Pathology, Kurume University Hospital, Fukuoka, Japan
| | - H Abe
- Department of Pathology, Kurume University Hospital, Fukuoka, Japan
| | - H Sakamoto
- Department of Cytology, The Tohkai Cytopathology Institute, Gifu, Japan
| | - M Takenaka
- Department of Cytology, The Tohkai Cytopathology Institute, Gifu, Japan
| | - K Yanoh
- Departments of Obstetrics and Gynecology and Pathology, JA Suzuka General Hospital, Mie, Japan
| | - M Yoshinobu
- Department of Diagnostic Pathology, Toyama Red Cross Hospital, Toyama, Japan
| | - S Irino
- Faculty of Health Sciences, Department of Nursing, Ehime Prefectural University of Health Sciences, Ehime, Japan
| | - Y Hirai
- Department of Obstetrics and Gynecology, Tokyo Women's Medical University, Tokyo, Japan
| | - T K Kobayashi
- Cancer Education and Research Center, Osaka University Graduate School of Medicine, Osaka, Japan
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Maki S, Hirai Y, Niino T, Matsumoto T. ASSESSMENT OF MOLECULAR GENETIC STABILITY BETWEEN LONG-TERM CRYOPRESERVED AND TISSUE CULTURED WASABI (Wasabia japonica) PLANTS. Cryo Letters 2015; 36:318-324. [PMID: 26574679] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Maintaining the genetic integrity in long-term tissue cultured and cryopreserved plants is important for the conservation of plant genetic resources. OBJECTIVE In this study, the genetic stability of cryopreserved wasabi shoot tips stored for 10 years at -150 degree C was visualized using Amplified Fragment Length Polymorphism (AFLP) and Methylation Sensitive Amplified Polymorphism (MSAP). MATERIALS AND METHODS The study included plants derived from cryopreserved shoot tips after 10.5 years storage at -150 degree C (LN10yr), after 2 h storage at -196 degree C (LN2hr), cryopreservation controls (No LN cooling (TC)) and non-treated controls without LN cooling (LC). The donor plants for LN2hr, TC and LC were also maintained in vitro at 20 degree C for the same period. RESULTS Neither technique detected genetic variations in either control or cryopreserved plants. Some mutations were noted in plants maintained in tissue culture for 10 years. Comparison of genome stability for TC and LN2hr plants showed only a minor change in DNA. However, when comparing the LC and Ln10yr, many differences were found. CONCLUSION We conclude that cryopreservation is a superior conservation method compared to tissue culture in maintaining genetic stability for a long-term storage of wasabi germplasm.
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Affiliation(s)
- S Maki
- Department of Science of Technology Innovation, Nagaoka University of Technology, Nagaoka, Niigata, Japan.
| | - Y Hirai
- Department of Applied Chemistry and Biotechnology, Niihama National College of Technology, Niihama, Ehime, Japan
| | - T Niino
- National Institute of Agrobiological Science, Tsukuba, Ibaraki, Japan
| | - T Matsumoto
- Faculty of Life and Environment Science, Shimane University, Matsue, Shimane, Japan
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Nakashima Y, Tamai M, Kita J, Tuji S, Fukui S, Umeda M, Nishino A, Suzuki T, Horai Y, Nishimura T, Koga T, Kawashiri S, Iwamoto N, Ichinose K, Hirai Y, Arima K, Yamasaki S, Nakamura H, Origuchi T, Uetani M, Aoyagi K, Eguchi K, Kawakami A. FRI0027 MRI-Proven Bone Marrow Oedema at Baseline is the Strongest Predictor Toward the Development of Rapid Radiographic Progression at 1 Year in Patients with Early-Stage Rheumatoid Arthritis: Results from Nagasaki University Early Arthritis Cohort. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5778] [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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Umeda M, Koga T, Ichinose K, Tsuji S, Fukui S, Nishino A, Nakashima Y, Suzuki T, Horai Y, Hirai Y, Kawashiri SY, Iwamoto N, Aramaki T, Tamai M, Nakamura H, Yamamoto K, Origuchi T, Ueki Y, Kawakami A. AB0180 The Role of Immune Regulation of CD4+CD52High T Cells in Systemic Lupus Erythematosus. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3215] [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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Fukui S, Ichinose K, Tsuji S, Umeda M, Nishino A, Nakashima Y, Suzuki T, Horai Y, Koga T, Kawashiri S, Iwamoto N, Hirai Y, Tamai M, Nakamura H, Origuchi T, Kawakami A. AB0665 Hypocholesterolemia at Diagnosis Can Predict the Relapse in Patients with Takayasu Arteritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3429] [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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Ushigusa T, Ichinose K, Tsuji S, Umeda M, Fukui S, Nishino A, Nakashima Y, Suzuki T, Horai Y, Koga T, Kawashiri SY, Iwamoto N, Hirai Y, Tamai M, Nakamura H, Origuchi T, Kawakami A. FRI0429 Evaluation of Soluble α-Klotho in Neuropsychiatric Systemic Lupus Erythematosus. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3007] [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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Sujiwattanarat P, Thapana W, Srikulnath K, Hirai Y, Hirai H, Koga A. Higher-order repeat structure in alpha satellite DNA occurs in New World monkeys and is not confined to hominoids. Sci Rep 2015; 5:10315. [PMID: 25974220 PMCID: PMC4431391 DOI: 10.1038/srep10315] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 03/25/2015] [Indexed: 11/17/2022] Open
Abstract
Centromeres usually contain large amounts of tandem repeat DNA. Alpha satellite DNA (AS) is the most abundant tandem repeat DNA found in the centromeres of simian primates. The AS of humans contains sequences organized into higher-order repeat (HOR) structures, which are tandem arrays of larger repeat units consisting of multiple basic repeat units. HOR-carrying AS also occurs in other hominoids, but results reported to date for phylogenetically more remote taxa have been negative. Here we show direct evidence for clear HOR structures in AS of the owl monkey and common marmoset. These monkeys are New World monkey species that are located phylogenetically outside of hominoids. It is currently postulated that the presence of HOR structures in AS is unique to hominoids. Our results suggest that this view must be modified. A plausible explanation is that generation of HOR structures is a general event that occurs occasionally or frequently in primate centromeres, and that, in humans, HOR-carrying AS became predominant in the central region of the centromere. It is often difficult to assemble sequence reads of tandem repeat DNAs into accurate contig sequences; our careful sequencing strategy allowed us to overcome this problem.
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Affiliation(s)
- Penporn Sujiwattanarat
- 1] Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan [2] Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Watcharaporn Thapana
- 1] Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan [2] Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | | | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
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18
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Miyake T, Yamamoto T, Hirai Y, Otsuka M, Hamada T, Tsuji K, Morizane S, Suzuki D, Aoyama Y, Iwatsuki K. Survival rates and prognostic factors of Epstein-Barr virus-associated hydroa vacciniforme and hypersensitivity to mosquito bites. Br J Dermatol 2014; 172:56-63. [DOI: 10.1111/bjd.13411] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2014] [Indexed: 11/28/2022]
Affiliation(s)
- T. Miyake
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - T. Yamamoto
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
- Department of Dermatology; Kawasaki Medical School; Okayama Japan
| | - Y. Hirai
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - M. Otsuka
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - T. Hamada
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - K. Tsuji
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - S. Morizane
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - D. Suzuki
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - Y. Aoyama
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
| | - K. Iwatsuki
- Department of Dermatology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-cho Kita-ku Okayama 700-8558 Japan
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Ohzono T, Hirai Y, Suzuki K, Shimomura M, Uchida N. Reinforced shape-tunable microwrinkles formed on a porous-film-embedded elastomer surface. Soft Matter 2014; 10:7165-7169. [PMID: 25097044 DOI: 10.1039/c4sm00942h] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new structural design is proposed for wrinkling to improve mechanical durability by exploiting a porous polymer film embedded on the surface of an elastomer, which acts as a hard layer, buckles into wrinkles and effectively suppresses fatal failures such as delamination and cracking.
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Affiliation(s)
- T Ohzono
- Nanosystem Research Institute, AIST, 1-1-1 Higashi, Tsukuba, 305-8565, Japan.
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20
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Baicharoen S, Miyabe-Nishiwaki T, Arsaithamkul V, Hirai Y, Duangsa-ard K, Siriaroonrat B, Domae H, Srikulnath K, Koga A, Hirai H. Locational diversity of alpha satellite DNA and intergeneric hybridization aspects in the Nomascus and Hylobates genera of small apes. PLoS One 2014; 9:e109151. [PMID: 25290445 PMCID: PMC4188616 DOI: 10.1371/journal.pone.0109151] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 04/15/2014] [Accepted: 08/29/2014] [Indexed: 01/05/2023] Open
Abstract
Recently, we discovered that alpha satellite DNA has unique and genus-specific localizations on the chromosomes of small apes. This study describes the details of alpha satellite localization in the genera Nomascus and Hylobates and explores their usefulness in distinguishing parental genome sets in hybrids between these genera. Fluorescence in situ hybridization was used to establish diagnostic criteria of alpha satellite DNA markers in discriminating small ape genomes. In particular we established the genus specificity of alpha satellite distribution in three species of light-cheeked gibbons (Nomascus leucogenys, N. siki, and N. gabriellae) in comparison to that of Hylobates lar. Then we determined the localization of alpha satellite DNA in a hybrid individual which resulted from a cross between these two genera. In Nomascus the alpha satellite DNA blocks were located at the centromere, telomere, and four interstitial regions. In Hylobates detectable amounts of alpha satellite DNA were seen only at centromeric regions. The differences in alpha satellite DNA locations between Nomascus and Hylobates allowed us to easily distinguish the parental chromosomal sets in the genome of intergeneric hybrid individuals found in Thai and Japanese zoos. Our study illustrates how molecular cytogenetic markers can serve as diagnostic tools to identify the origin of individuals. These molecular tools can aid zoos, captive breeding programs and conservation efforts in managing small apes species. Discovering more information on alpha satellite distribution is also an opportunity to examine phylogenetic and evolutionary questions that are still controversial in small apes.
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Affiliation(s)
- Sudarath Baicharoen
- Bioscience Program, Faculty of Science, Kasetsart University, Bangkok, Thailand
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, Bangkok, Thailand
- Conservation, Research and Education Division, Zoological Park Organization, Bangkok, Thailand
| | | | - Visit Arsaithamkul
- Conservation, Research and Education Division, Zoological Park Organization, Bangkok, Thailand
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | | | - Boripat Siriaroonrat
- Conservation, Research and Education Division, Zoological Park Organization, Bangkok, Thailand
| | | | - Kornsorn Srikulnath
- Center for Advanced Studies in Tropical Natural Resources, National Research University-Kasetsart University, Bangkok, Thailand
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan
- * E-mail:
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21
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Hirai Y, Asahata S, Ainoda Y, Goto A, Fujita T, Totsuka K. Nosocomial Candida parapsilosis candidaemia: risk factors, antifungal susceptibility and outcome. J Hosp Infect 2014; 87:54-8. [PMID: 24698737 DOI: 10.1016/j.jhin.2014.02.006] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 02/10/2014] [Indexed: 11/17/2022]
Abstract
A retrospective analysis was undertaken from 2000 to 2010 to show the risk factors associated with death within 30 days in patients with C. parapsilosis candidaemia (CPC). Fifty-one cases of nosocomial CPC were included in the analysis. All isolates from blood cultures were susceptible to micafungin and fluconazole. The overall mortality rate was 23.5%, and the most severe complications were endocarditis (5.9%) and endophthalmitis (5.9%). On multi-variate analysis, APACHE II score >25 (odds ratio 43.9) and retained cardiovascular prosthetic materials (RCPM) (prosthetic valve or graft) (odds ratio 14.6) were found to be risk factors associated with death. Prompt surgical removal should be considered in CPC patients with RCPM.
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Affiliation(s)
- Y Hirai
- Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan; Department of Haematology, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan.
| | - S Asahata
- Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan
| | - Y Ainoda
- Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan
| | - A Goto
- Laboratory of Microbiology, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan
| | - T Fujita
- Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan
| | - K Totsuka
- Department of Infectious Diseases, Tokyo Women's Medical University Hospital, Shinjuku-ku, Tokyo, Japan
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22
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Koga A, Hirai Y, Terada S, Jahan I, Baicharoen S, Arsaithamkul V, Hirai H. Evolutionary origin of higher-order repeat structure in alpha-satellite DNA of primate centromeres. DNA Res 2014; 21:407-15. [PMID: 24585002 PMCID: PMC4131833 DOI: 10.1093/dnares/dsu005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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] [Indexed: 12/03/2022] Open
Abstract
Alpha-satellite DNA (AS) is a main DNA component of primate centromeres, consisting of tandemly repeated units of ∼170 bp. The AS of humans contains sequences organized into higher-order repeat (HOR) structures, in which a block of multiple repeat units forms a larger repeat unit and the larger units are repeated tandemly. The presence of HOR in AS is widely thought to be unique to hominids (family Hominidae; humans and great apes). Recently, we have identified an HOR-containing AS in the siamang, which is a small ape species belonging to the genus Symphalangus in the family Hylobatidae. This result supports the view that HOR in AS is an attribute of hominoids (superfamily Hominoidea) rather than hominids. A single example is, however, not sufficient for discussion of the evolutionary origin of HOR-containing AS. In the present study, we developed an efficient method for detecting signs of large-scale HOR and demonstrated HOR of AS in all the three other genera. Thus, AS organized into HOR occurs widely in hominoids. Our results indicate that (i) HOR-containing AS was present in the last common ancestor of hominoids or (ii) HOR-containing AS emerged independently in most or all basal branches of hominoids. We have also confirmed HOR occurrence in centromeric AS in the Hylobatidae family, which remained unclear in our previous study because of the existence of AS in subtelomeric regions, in addition to centromeres, of siamang chromosomes.
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Affiliation(s)
- Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Shoko Terada
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Israt Jahan
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Sudarath Baicharoen
- Bureau of Conservation Research and Education, Zoological Park Organization, Bangkok 10300, Thailand
| | - Visit Arsaithamkul
- Bureau of Conservation Research and Education, Zoological Park Organization, Bangkok 10300, Thailand
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
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23
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Hara T, Hirai Y, Baicharoen S, Hayakawa T, Hirai H, Koga A. Corrigendum: A novel composite retrotransposon derived from or generated independently of the SVA (SINE/VNTR/<i>Alu</i>) transposon has undergone proliferation ingibbon genomes [Genes Genet. Syst. (2012) 87, p. 181–190]. Genes Genet Syst 2014. [DOI: 10.1266/ggs.89.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Toru Hara
- Primate Research Institute, Kyoto University
| | | | | | - Takashi Hayakawa
- Japan Society for Promotion of Science
- Primate Research Institute, Kyoto University
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24
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Jahan I, Hirai Y, Rahman ZMM, Islam MA, Hirai H. The first finding of chromosome variations in wild-born western hoolock gibbons. Primates 2013; 54:335-40. [DOI: 10.1007/s10329-013-0382-2] [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] [Received: 05/01/2013] [Accepted: 08/02/2013] [Indexed: 12/23/2022]
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25
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Ikeda S, Tokuda K, Kanamori H, Hirai Y, Endo S, Kunishima H, Kaku M. P119: Hand hygiene compliance among nurses in a Japanese tertiary hospital emergency department. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688184 DOI: 10.1186/2047-2994-2-s1-p119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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26
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Prakhongcheep O, Chaiprasertsri N, Terada S, Hirai Y, Srikulnath K, Hirai H, Koga A. Heterochromatin blocks constituting the entire short arms of acrocentric chromosomes of Azara's owl monkey: formation processes inferred from chromosomal locations. DNA Res 2013; 20:461-70. [PMID: 23761219 PMCID: PMC3789557 DOI: 10.1093/dnares/dst023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Centromeres and telomeres of higher eukaryotes generally contain repetitive sequences, which often form pericentric or subtelomeric heterochromatin blocks. C-banding analysis of chromosomes of Azara's owl monkey, a primate species, showed that the short arms of acrocentric chromosomes consist mostly or solely of constitutive heterochromatin. The purpose of the present study was to determine which category, pericentric, or subtelomeric is most appropriate for this heterochromatin, and to infer its formation processes. We cloned and sequenced its DNA component, finding it to be a tandem repeat sequence comprising 187-bp repeat units, which we named OwlRep. Subsequent hybridization analyses revealed that OwlRep resides in the pericentric regions of a small number of metacentric chromosomes, in addition to the short arms of acrocentric chromosomes. Further, in the pericentric regions of the acrocentric chromosomes, OwlRep was observed on the short-arm side only. This distribution pattern of OwlRep among chromosomes can be simply and sufficiently explained by assuming (i) OwlRep was transferred from chromosome to chromosome by the interaction of pericentric heterochromatin, and (ii) it was amplified there as subtelomeric heterochromatin. OwlRep carries several direct and inverted repeats within its repeat units. This complex structure may lead to a higher frequency of chromosome scission and may thus be a factor in the unique distribution pattern among chromosomes. Neither OwlRep nor similar sequences were found in the genomes of the other New World monkey species we examined, suggesting that OwlRep underwent rapid amplification after the divergence of the owl monkey lineage from lineages of the other species.
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Daigo F, Asahata S, Ainoda Y, Fujita T, Hirai Y, Kotani T, Ozaki M, Totsuka K. P350 Can outcomes of blood culture-positive intensive care unit (ICU) patients be predicted based on pathogenic bacteria? Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70591-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Prakhongcheep O, Hirai Y, Hara T, Srikulnath K, Hirai H, Koga A. Two types of alpha satellite DNA in distinct chromosomal locations in Azara's owl monkey. DNA Res 2013; 20:235-40. [PMID: 23477842 PMCID: PMC3686428 DOI: 10.1093/dnares/dst004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [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: 11/14/2012] [Accepted: 02/15/2013] [Indexed: 11/13/2022] Open
Abstract
Alpha satellite DNA is a repetitive sequence known to be a major DNA component of centromeres in primates (order Primates). New World monkeys form one major taxon (parvorder Platyrrhini) of primates, and their alpha satellite DNA is known to comprise repeat units of around 340 bp. In one species (Azara's owl monkey Aotus azarae) of this taxon, we identified two types of alpha satellite DNA consisting of 185- and 344-bp repeat units that we designated as OwlAlp1 and OwlAlp2, respectively. OwlAlp2 exhibits similarity throughout its entire sequence to the alpha satellite DNA of other New World monkeys. The chromosomal locations of the two types of sequence are markedly distinct: OwlAlp1 was observed at the centromeric constrictions, whereas OwlAlp2 was found in the pericentric regions. From these results, we inferred that OwlAlp1 was derived from OwlAlp2 and rapidly replaced OwlAlp2 as the principal alpha satellite DNA on a short time scale at the speciation level. A less likely alternative explanation is also discussed.
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Affiliation(s)
- Ornjira Prakhongcheep
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Toru Hara
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Kornsorn Srikulnath
- Department of Genetics, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
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Ainoda Y, Asahata S, Fujita T, Hirai Y, Totsuka K. P49 Evaluation of susceptibility to oxacillin and prognosis in patients with S. lugdunensis bacteremia. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70294-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Shimizu T, Hirai Y, Miyamoto A. Expression of Cyclins and Cyclin-Dependent Kinase Inhibitors in Granulosa Cells from Bovine Ovary. Reprod Domest Anim 2013; 48:e65-9. [DOI: 10.1111/rda.12177] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 04/04/2013] [Indexed: 11/30/2022]
Affiliation(s)
- T Shimizu
- Graduate School of Animal and Food Hygiene; Obihiro University of Agriculture and Veterinary Medicine; Obihiro; Hokkaido; Japan
| | - Y Hirai
- Graduate School of Animal and Food Hygiene; Obihiro University of Agriculture and Veterinary Medicine; Obihiro; Hokkaido; Japan
| | - A Miyamoto
- Graduate School of Animal and Food Hygiene; Obihiro University of Agriculture and Veterinary Medicine; Obihiro; Hokkaido; Japan
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31
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Baicharoen S, Arsaithamkul V, Hirai Y, Hara T, Koga A, Hirai H. In situ hybridization analysis of gibbon chromosomes suggests that amplification of alpha satellite DNA in the telomere region is confined to two of the four genera. Genome 2012. [DOI: 10.1139/gen-2012-0123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The siamang (Symphalangus syndactylus), a species of the family Hylobatidae (gibbons), carries large blocks of constitutive heterochromatin in the telomere region of chromosomes. We recently found that alpha satellite DNA constitutes these heterochromatin blocks as a main component. Alpha satellite DNA, tandem repeat sequences of 171-bp repeat units, is a major component of centromeres in primates. In addition to the siamang, the white-cheeked gibbon (Nomascus leucogenys) was previously found to carry the alpha satellite DNA in the telomere region, although not as large a scale as the siamang. Gibbons comprise four genera: Hoolock, Hylobates, Nomascus, and Symphalangus. Here, we report that the amplification of alpha satellite DNA in the telomere region is probably confined to two genera: Nomascus and Symphalangus. We examined one species of Hoolock and four species of Hylobates and obtained evidence against such an amplification event in these species. The phylogenetic relationship of the four gibbon genera remains unclear. One simple explanation for the current distribution of the telomere region alpha satellite DNA would be that Nomascus and Symphalangus are relatively closely related and the amplification occurred in their common ancestor.
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Affiliation(s)
- Sudarath Baicharoen
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
- Bureau of Conservation Research and Education, Zoological Park Organization, Bangkok 10300, Thailand
| | - Visit Arsaithamkul
- Bureau of Conservation Research and Education, Zoological Park Organization, Bangkok 10300, Thailand
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Toru Hara
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Akihiko Koga
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama City 484-8506, Japan
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32
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Yoshimasu T, Oura S, Ota F, Hirai Y, Naito K, Nakamura R, Tanaka Y, Ikeda M, Okamura Y. Open Biopsy for Malignant Lymphoma of the Anterior Mediastinum. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32484-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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33
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Hara T, Hirai Y, Jahan I, Hirai H, Koga A. Tandem repeat sequences evolutionarily related to SVA-type retrotransposons are expanded in the centromere region of the western hoolock gibbon, a small ape. J Hum Genet 2012; 57:760-5. [DOI: 10.1038/jhg.2012.107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Hirai H, Hirai Y, LoVerde PT. Evolution of sex chromosomes ZW of Schistosoma mansoni inferred from chromosome paint and BAC mapping analyses. Parasitol Int 2012; 61:684-9. [PMID: 22831897 DOI: 10.1016/j.parint.2012.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 07/13/2012] [Accepted: 07/17/2012] [Indexed: 11/25/2022]
Abstract
Chromosomes of schistosome parasites among digenetic flukes have a unique evolution because they exhibit the sex chromosomes ZW, which are not found in the other groups of flukes that are hermaphrodites. We conducted molecular cytogenetic analyses for investigating the sex chromosome evolution using chromosome paint analysis and BAC clones mapping. To carry this out, we developed a technique for making paint probes of genomic DNA from a single scraped chromosome segment using a chromosome microdissection system, and a FISH mapping technique for BAC clones. Paint probes clearly identified each of the 8 pairs of chromosomes by a different fluorochrome color. Combination analysis of chromosome paint analysis with Z/W probes and chromosome mapping with 93 BAC clones revealed that the W chromosome of Schistosoma mansoni has evolved by at least four inversion events and heterochromatinization. Nine of 93 BAC clones hybridized with both the Z and W chromosomes, but the locations were different between Z and W chromosomes. The homologous regions were estimated to have moved from the original Z chromosome to the differentiated W chromosome by three inversions events that occurred before W heterohcromatinization. An inversion that was observed in the heterochromatic region of the W chromosome likely occurred after W heterochromatinization. These inversions and heterochromatinization are hypothesized to be the key factors that promoted the evolution of the W chromosome of S. mansoni.
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Affiliation(s)
- Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan.
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35
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Hara T, Hirai Y, Baicharoen S, Hayakawa T, Hirai H, Koga A. A novel composite retrotransposon derived from or generated independently of the SVA (SINE/VNTR/ Alu) transposon has undergone proliferation in gibbon genomes. Genes Genet Syst 2012; 87:181-90. [DOI: 10.1266/ggs.87.181] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Toru Hara
- Primate Research Institute, Kyoto University
| | | | | | - Takashi Hayakawa
- Primate Research Institute, Kyoto University
- Japan Society for Promotion of Science
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36
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Hara T, Hirai Y, Baicharoen S, Hayakawa T, Hirai H, Koga A. Corrigendum: A novel composite retrotransposon derived from or generated independently of the SVA (SINE/VNTR/<i>Alu</i>) transposon has undergone proliferation in gibbon genomes [Genes Genet. Syst. (2012) 87, p. 181–190]. Genes Genet Syst 2012. [DOI: 10.1266/ggs.87.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Toru Hara
- Primate Research Institute, Kyoto University
| | | | | | - Takashi Hayakawa
- Primate Research Institute, Kyoto University
- Japan Society for Promotion of Science
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37
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Yoshida K, Terai Y, Mizoiri S, Aibara M, Nishihara H, Watanabe M, Kuroiwa A, Hirai H, Hirai Y, Matsuda Y, Okada N. B chromosomes have a functional effect on female sex determination in Lake Victoria cichlid fishes. PLoS Genet 2011; 7:e1002203. [PMID: 21876673 PMCID: PMC3158035 DOI: 10.1371/journal.pgen.1002203] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [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: 04/27/2011] [Accepted: 06/08/2011] [Indexed: 11/19/2022] Open
Abstract
The endemic cichlid fishes in Lake Victoria are a model system for speciation through adaptive radiation. Although the evolution of the sex-determination system may also play a role in speciation, little is known about the sex-determination system of Lake Victoria cichlids. To understand the evolution of the sex-determination system in these fish, we performed cytogenetic analysis in 11 cichlid species from Lake Victoria. B chromosomes, which are present in addition to standard chromosomes, were found at a high prevalence rate (85%) in these cichlids. In one species, B chromosomes were female-specific. Cross-breeding using females with and without the B chromosomes demonstrated that the presence of the B chromosomes leads to a female-biased sex ratio in this species. Although B chromosomes were believed to be selfish genetic elements with little effect on phenotype and to lack protein-coding genes, the present study provides evidence that B chromosomes have a functional effect on female sex determination. FISH analysis using a BAC clone containing B chromosome DNA suggested that the B chromosomes are derived from sex chromosomes. Determination of the nucleotide sequences of this clone (104.5 kb) revealed the presence of several protein-coding genes in the B chromosome, suggesting that B chromosomes have the potential to contain functional genes. Because some sex chromosomes in amphibians and arthropods are thought to be derived from B chromosomes, the B chromosomes in Lake Victoria cichlids may represent an evolutionary transition toward the generation of sex chromosomes.
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Affiliation(s)
- Kohta Yoshida
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Yohey Terai
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Shinji Mizoiri
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Mitsuto Aibara
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Hidenori Nishihara
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Masakatsu Watanabe
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
| | - Asato Kuroiwa
- Laboratory of Animal Cytogenetics, Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Hirohisa Hirai
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Yuriko Hirai
- Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Yoichi Matsuda
- Department of Applied Molecular Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Norihiro Okada
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama, Japan
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Adachi H, Hirai Y, Enomoto M, Fukami A, Otsuka M, Kumagae SI, Nanjo Y, Esaki E, Kumagai E, Yoshikawa K, Yokoi K, Ogata K, Tsukagawa E, Kasahara A, Murayama K, Imaizumi T. P1-66 Trends in nutritional intake and serum cholesterol levels over 50 years in Tanushimaru, Japanese men. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976c.59] [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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39
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Fukami A, Adachi H, Hirai Y, Enomoto M, Otsuka M, Nanjo Y, Yoshikawa K, Esaki E, Kumagai E, Ogata K, Kasahara A, Tsukagawa E, Yokoi K, Murayama K, Imaizumi T. P2-90 High levels of plasma homocysteine predicts development of hypertension in a general population. The Tanushimaru Study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976i.25] [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: 11/03/2022]
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40
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Otsuka M, Adachi H, Hirai Y, Enomoto M, Fukami A, Kumagae SI, Nanjo Y, Yoshikawa K, Esaki E, Kumagai E, Yokoi K, Ogata K, Tsukagawa E, Kasahara A, Murayama K, Imaizumi T. SP3-50 Serum hepatocyte growth factor levels and mortalities from cancer in apparently healthy general population. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976o.50] [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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41
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Nakatani S, Wei M, Ishimura E, Kakehashi A, Mori K, Inaba M, Wanibuchi H, Li Y, Liu J, Wang B, Liu M, Chi Y, Marquez E, Riera M, Rigol J, Pascual J, Soler MJ, Grosjean F, Esposito V, Torreggiani M, Madek JM, Williams VA, Zheng F, Vlassara H, Jepsen KJ, Striker GE, Yuan Y, Zhao L, Chen Y, Moorhead J, Varghese Z, Sun Z, Ruan X, Kuno Y, Iyoda M, Shibata T, Hirai Y, Akizawa T. Diabetes / Basic research. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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Andersen K, Eltrich N, Vielhauer V, Iyoda M, Shibata T, Hirai Y, Kuno Y, Akizawa T, Kim MJ, Barratt J, Molyneux K, Masuda ES, Pusey CD, Tam FWK, Wilde B, Thewissen M, van Paassen P, Hilhorst M, Damoiseaux J, Witzke O, Cohen Tervaert JW, Marco H, Jones RB, Smith RM, Catapano F, Chaudhry AN, Jayne DRW. Immune and inflammatory mechanisms. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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43
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Negoro H, Kobayashi H, Teng B, Schafer I, Starker G, Miller E, Mao Y, Park JK, Haller H, Schiffer M, Lu Y, Zhong F, Zhou Q, Hao X, Li C, Guo S, Wang W, Chen N, Okano K, Jinnai H, Iwasaki T, Miwa N, Kimata N, Akiba T, Nitta K, Chen CA, Cheng YC, Hwang JC, Chang JMC, Guh JY, Chen HC, Garcia-Sanchez O, Lopez-Novoa JM, Lopez-Hernandez FJ, Hirai Y, Iyoda M, Shibata T, Kuno Y, Akizawa T, Shimizu H, Bolati D, Niwa T, Kim YK, Nam SA, Kim WY, Park SH, Song HC, Choi EJ, Kim J, Sirolli V, Giardinelli A, Morabito C, Di Cesare M, Di Pietro N, Di Liberato L, Amoroso L, Mariggio MA, Formoso G, Pandolfi A, Bonomini M, Shalhoub V, Shatzen E, Ward S, Damore M, Boedigheimer M, Campbell M, Pan Z, Davis J, Henley C, Richards W, Yoshida T, Yamashita M, Hayashi M, Bodor C, Nemeth A, Berzsenyi V, Vegh B, Sebe A, Rosivall L, Koken T, Hunkerler Z, Kahraman A, Verzola D, Villaggio B, Tosetti F, Cappuccino L, Gianiorio F, Simonato A, Parodi E, Garibotto G, Chai Y, Liu J, Sun B, Zhao X, Qian J, Xing C. Cell signalling. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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Katsumata N, Hirai Y, Kamiura S, Sugiyama T, Kokawa K, Hatae M, Nishimura R, Ochiai K. Phase II study of S-1, an oral fluoropyrimidine, in patients with advanced or recurrent cervical cancer. Ann Oncol 2011; 22:1353-1357. [PMID: 21345941 PMCID: PMC3101364 DOI: 10.1093/annonc/mdq602] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background: S-1 is an oral fluoropyrimidine. This phase II study was designed to evaluate the efficacy and safety of S-1 in patients with advanced or recurrent uterine cervical cancer. Patients and methods: S-1 35 mg/m2 was given twice daily for 28 days repeated every 6 weeks. Eligible patients were women aged 20–74 years, who had Eastern Cooperative Oncology Group performance status of zero or one, who had stage IVB or recurrent uterine cervical cancer, and who had received no more than one platinum-containing chemotherapy regimen for stage IVB or recurrent disease. The primary end point was overall response rate (ORR) determined by RECIST. Results: A total of 37 patients were enrolled in the trial and 36 were eligible. The median number of cycles administered was 4. The confirmed ORR was 30.6% (95% confidence interval 15.5% to 45.6%). The response rate for patients who had received platinum-based treatment including chemoradiotherapy was 31.8% (7 of 22). After a median follow-up duration of 25 months, the median time to progression and the median survival time were 5.2 and 15.4 months, respectively. The most frequent grade 3 or 4 adverse events were anemia (16%), anorexia (16%), and diarrhea (22%). Conclusions: This phase II study of S-1 in cervical cancer suggests a promising response rate and a contribution toward prolonging survival, with modest toxic effects. Phase III studies of S-1 in patients with advanced or recurrent cervical cancer are thus warranted.
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Affiliation(s)
- N Katsumata
- Department of Medical Oncology, National Cancer Center Hospital, Tokyo.
| | - Y Hirai
- Department of Gynecology, Cancer Institute Hospital Ariake, Tokyo
| | - S Kamiura
- Department of Gynecology, Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka
| | - T Sugiyama
- Department of Obstetrics and Gynecology, Iwate Medical University, Iwate
| | - K Kokawa
- Department of Obstetrics and Gynecology, Wakayama Medical University Hospital, Wakayama
| | - M Hatae
- Department of Obstetrics and Gynecology, Kagoshima City Hospital, Kagoshima
| | - R Nishimura
- Department of Gynecology, Hyogo Cancer Center, Hyogo
| | - K Ochiai
- Department of Obstetrics and Gynecology, The Jikei University, School of Medicine, Tokyo, Japan
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45
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Sasahara T, Hayashi S, Morisawa Y, Sakihama T, Yoshimura A, Hirai Y. Bacillus cereus bacteremia outbreak due to contaminated hospital linens. Eur J Clin Microbiol Infect Dis 2010; 30:219-26. [DOI: 10.1007/s10096-010-1072-2] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Accepted: 09/21/2010] [Indexed: 10/19/2022]
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46
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Iwase M, Satta Y, Hirai H, Hirai Y, Takahata N. Frequent gene conversion events between the X and Y homologous chromosomal regions in primates. BMC Evol Biol 2010; 10:225. [PMID: 20650009 PMCID: PMC3055243 DOI: 10.1186/1471-2148-10-225] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 07/23/2010] [Indexed: 01/22/2023] Open
Abstract
Background Mammalian sex-chromosomes originated from a pair of autosomes. A step-wise cessation of recombination is necessary for the proper maintenance of sex-determination and, consequently, generates a four strata structure on the X chromosome. Each stratum shows a specific per-site nucleotide sequence difference (p-distance) between the X and Y chromosomes, depending on the time of recombination arrest. Stratum 4 covers the distal half of the human X chromosome short arm and the p-distance of the stratum is ~10%, on average. However, a 100-kb region, which includes KALX and VCX, in the middle of stratum 4 shows a significantly lower p-distance (1-5%), suggesting frequent sequence exchanges or gene conversions between the X and Y chromosomes in humans. To examine the evolutionary mechanism for this low p-distance region, sequences of a corresponding region including KALX/Y from seven species of non-human primates were analyzed. Results Phylogenetic analysis of this low p-distance region in humans and non-human primate species revealed that gene conversion like events have taken place at least ten times after the divergence of New World monkeys and Catarrhini (i.e., Old World monkeys and hominoids). A KALY-converted KALX allele in white-handed gibbons also suggests a possible recent gene conversion between the X and Y chromosomes. In these primate sequences, the proximal boundary of this low p-distance region is located in a LINE element shared between the X and Y chromosomes, suggesting the involvement of this element in frequent gene conversions. Together with a palindrome on the Y chromosome, a segmental palindrome structure on the X chromosome at the distal boundary near VCX, in humans and chimpanzees, may mediate frequent sequence exchanges between X and Y chromosomes. Conclusion Gene conversion events between the X and Y homologous regions have been suggested, mainly in humans. Here, we found frequent gene conversions in the evolutionary course of primates. An insertion of a LINE element at the proximal end of the region may be a cause for these frequent conversions. This gene conversion in humans may also be one of the genetic causes of Kallmann syndrome.
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Affiliation(s)
- Mineyo Iwase
- The Center for the Promotion of Integrated Sciences, The Graduate University for Advanced Studies Sokendai, Shonan Village, Hayama, Kanagawa 240-0193, Japan.
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47
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Harusato A, Naito Y, Takagi T, Yamada S, Mizushima K, Hirai Y, Horie R, Inoue K, Fukumoto K, Hirata I, Omatsu T, Kishimoto E, Uchiyama K, Handa O, Ishikawa T, Kokura S, Ichikawa H, Muto A, Igarashi K, Yoshikawa T. Inhibition of Bach1 ameliorates indomethacin-induced intestinal injury in mice. J Physiol Pharmacol 2009; 60 Suppl 7:149-154. [PMID: 20388958] [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] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Accepted: 12/11/2009] [Indexed: 05/29/2023]
Abstract
BTB and CNC homolog 1 (Bach1) is a transcriptional repressor of heme oxygenase-1 (HO-1). It plays an important role in the feedback regulation of HO-1 expression, which protects cells from various insults including oxidative stress and inflammatory cytokines. However, the role of Bach1 in intestinal inflammation remains unclear. In this study, the role of Bach1 in intestinal mucosal injury was elucidated using 8-week-old female C57BL/6 (wild-type) and homozygous Bach1-deficient C57BL/6 mice. Intestinal mucosal injuries induced by a single subcutaneous administration of indomethacin were evaluated macroscopically, histologically, and biochemically. Mucosal protein content and chemokine mRNA levels were determined by real-time PCR. Our results showed that the indomethacin-induced intestinal injury was remarkably improved in Bach1-deficient mice. Histological examination showed that the area of injured lesion was decreased in Bach1-deficient mice compared to wild-type mice. Administration of indomethacin induced expression of inflammatory chemokines such as KC, MIP1alpha and MCP1, which was suppressed in Bach1-deficient mice. Myeloperoxidase activity in the intestinal mucosa was also significantly decreased in Bach1-deficient mice. Additionally, Bach1 deficiency enhanced immunopositivity of HO-1 in the intestinal mucosa after indomethacin administration. Disruption of the Bach1 gene thus caused inhibition of mucosal injury, indicating that inhibition of Bach1 may be a novel therapeutic strategy for treating indomethacin-induced intestinal injury.
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Affiliation(s)
- A Harusato
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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48
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Berriman M, Haas BJ, LoVerde PT, Wilson RA, Dillon GP, Cerqueira GC, Mashiyama ST, Al-Lazikani B, Andrade LF, Ashton PD, Aslett MA, Bartholomeu DC, Blandin G, Caffrey CR, Coghlan A, Coulson R, Day TA, Delcher A, DeMarco R, Djikeng A, Eyre T, Gamble JA, Ghedin E, Gu Y, Hertz-Fowler C, Hirai H, Hirai Y, Houston R, Ivens A, Johnston DA, Lacerda D, Macedo CD, McVeigh P, Ning Z, Oliveira G, Overington JP, Parkhill J, Pertea M, Pierce RJ, Protasio AV, Quail MA, Rajandream MA, Rogers J, Sajid M, Salzberg SL, Stanke M, Tivey AR, White O, Williams DL, Wortman J, Wu W, Zamanian M, Zerlotini A, Fraser-Liggett CM, Barrell BG, El-Sayed NM. The genome of the blood fluke Schistosoma mansoni. Nature 2009; 460:352-8. [PMID: 19606141 PMCID: PMC2756445 DOI: 10.1038/nature08160] [Citation(s) in RCA: 801] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2009] [Accepted: 05/22/2009] [Indexed: 11/24/2022]
Abstract
Schistosoma mansoni is responsible for the neglected tropical disease schistosomiasis that affects 210 million people in 76 countries. We report here analysis of the 363 megabase nuclear genome of the blood fluke. It encodes at least 11,809 genes, with an unusual intron size distribution, and novel families of micro-exon genes that undergo frequent alternate splicing. As the first sequenced flatworm, and a representative of the lophotrochozoa, it offers insights into early events in the evolution of the animals, including the development of a body pattern with bilateral symmetry, and the development of tissues into organs. Our analysis has been informed by the need to find new drug targets. The deficits in lipid metabolism that make schistosomes dependent on the host are revealed, while the identification of membrane receptors, ion channels and more than 300 proteases, provide new insights into the biology of the life cycle and novel targets. Bioinformatics approaches have identified metabolic chokepoints while a chemogenomic screen has pinpointed schistosome proteins for which existing drugs may be active. The information generated provides an invaluable resource for the research community to develop much needed new control tools for the treatment and eradication of this important and neglected disease.
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Oura S, Tamaki T, Yoshimasu T, Ohta F, Hirai Y, Naito K, Miyasaka M. Radiofrequency ablation therapy: results in 100 patients with breast cancer. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-5153] [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: 11/16/2022]
Abstract
Abstract
Abstract #5153
Background: Radiofrequency ablation therapy (RFA) is one of the most minimally invasive approaches for the treatment of hepatic cancers and other solid malignancies. The aim of this study is to assess the safety and local controllability of RFA against breast cancer.
 Patients and Methods: A total of 100 pts with localized early breast cancer were enrolled. Ductal spreading and/or daughter nodules were preoperatively checked with mammography, ultrasound and MRI. Tumor size was 0.5-2.0cm (median 1.5cm). LeVeen system and Cool-tip RF system was used in 5 pts and 95 pts respectively. One session of RFA was applied to 96 pts, 2 sessions to 4 pts. To avoid skin burn, 5% glucose was injected subcutaneously just above the tumor and the skin was cooled during RFA. After completing RFA, temperatures along the needle tract were measured at 1 cm intervals in 89 pts. All pts underwent cytological and MR-imaging study 3-4 weeks after operation, and received adjuvant radiotherapy (50Gy) to the breast.
 Results: RFA heated the tumors up to over 60° in 1 pt, 70° in 4 pts, 80° in 21 pts, 90° in 51 pts, and 100° in 13 pts. Skin burn was found in 2 pts over the tumor, and 1 pt at the grounding pads. No major side effects except for skin burn were found. Postoperative cytological and imaging study showed complete ablation of all the target tumors. No pts developed local and distant recurrence for 16-54 months (median 31 months).
 Discussion: Our RFA procedures can offer good local control without serious adverse events to breast cancer patients.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 5153.
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Affiliation(s)
- S Oura
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - T Tamaki
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - T Yoshimasu
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - F Ohta
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - Y Hirai
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - K Naito
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
| | - M Miyasaka
- 1 Breast Surgical Oncology, Wakayama Medical University, Wakayama, Wakayama, Japan
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Sri Kantha S, Suzuki J, Hirai Y, Hirai H. Behavioral sleep in captive owl monkey (Aotus azarae) and squirrel monkey (Saimiri boliviensis). Acta Neurobiol Exp (Wars) 2009; 69:537-44. [PMID: 20048768 DOI: 10.55782/ane-2009-1762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The objective of this study was to test the hypothesis that activity-behavioral sleep parameters differ between nocturnallyactive owl monkeys and diurnally-active squirrel monkeys which are sympatric and of Bolivian origin. The total sleep time (TST) and sleep episode length (SEL) of 7 adult owl monkey siblings and 4 adult squirrel monkeys were quantitated by actigraphy for 7 days under captive conditions. The higher TST/24 h values and longer SEL/12 h quiescent phase quantitated for owl monkeys in comparison to that of squirrel monkeys clearly indicate that the behavioral sleep is markedly different between these two groups, though they are sympatric in wild. Significant differences noted in the sleep architecture between squirrel monkeys and owl monkeys can be attributed to the influences in the selected sleep niche, threat perception from predators, and disturbances from natural elements (especially rain) in the natural habitat.
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Affiliation(s)
- Sachi Sri Kantha
- Center for Human Evolution Modeling Research, Kyoto University Primate Research Institute, Inuyama City, Japan
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