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Imamura S, Miyata M, Tagata K, Yokomine T, Ohmure K, Kawasoe M, Otsuji H, Chaen H, Oketani N, Ogawa M, Nakamura K, Yoshino S, Kakihana Y, Ohishi M. Prognostic predictors in patients with cardiopulmonary arrest: A novel equation for evaluating the 30-day mortality. J Cardiol 2023; 82:146-152. [PMID: 36682713 DOI: 10.1016/j.jjcc.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 11/22/2022] [Accepted: 01/02/2023] [Indexed: 01/22/2023]
Abstract
BACKGROUND Early prediction of outcomes after cardiopulmonary arrest (CPA) is important for considering the best support. Our purpose was to evaluate predictors of the 30-day mortality in patients with CPA after return of spontaneous circulation (ROSC) and to assess an equation for calculating the 30-day mortality using clinical parameters. METHODS We retrospectively analyzed the data of 194 consecutive patients with CPA and ROSC in a derivation study (2015-2022). We compared clinical parameters between the survived (n = 78) and dead (n = 116) patients. We derived an equation for estimated probability of death based on clinical parameters, using multivariate logistic regression analysis. The reliability of the equation was validated in 80 additional patients with CPA. RESULTS The 30-day mortality was associated with sex, witnessed cardiac arrest, bystander cardiopulmonary resuscitation (CPR), CPA due to acute myocardial infarction, pupil diameter, Glasgow Coma Scale score (GCS), presence of light reflex, arterial or venous pH, lactate levels, initial ventricular fibrillation (VF), CPA time, and age. The derived logistic regression equation was as follows: Estimated probability of death = 1 / (1 + e-x), x = (0.25 × bystander CPR) + (0.44 × pupil diameter) - (0.14 × GCS) + (0.09 × lactate) - (1.87 × initial VF) + (0.07 × CPA time) + (0.05 × age) - 7.03. The cut-off value for estimated probability of death calculated by this equation was 54.5 %, yielding a sensitivity, specificity, and accuracy of 86.2 %, 80.8 %, and 84.5 %, respectively. In the validation model, these values were 81.8 %, 85.7 %, and 82.5 %, respectively. CONCLUSIONS The 30-day mortality may be calculated after ROSC in patients with CPA using simple clinical parameters. This equation may facilitate further best support for patients with CPA.
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Affiliation(s)
- Shunichi Imamura
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan.
| | - Masaaki Miyata
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Kento Tagata
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Tatsuo Yokomine
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Kenta Ohmure
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Mariko Kawasoe
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Hideaki Otsuji
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Hideto Chaen
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Naoya Oketani
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Masakazu Ogawa
- Department of Cardiovascular Medicine, Kagoshima City Hospital, Kagoshima, Japan
| | - Kentaro Nakamura
- Department of Emergency Medicine, Ohshima Prefectural Hospital, Kagoshima, Japan
| | - Satoshi Yoshino
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Yasuyuki Kakihana
- Department of Emergency Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Mitsuru Ohishi
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
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Yokomine T, Takeuchi J, Nakaharai H, Satake S, Kunugi T, Morley NB, Abdou MA. Experimental Investigation of Turbulent Heat Transfer of High Prandtl Number Fluid Flow Under Strong Magnetic Field. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1558] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Yokomine
- Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - J. Takeuchi
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA
| | - H. Nakaharai
- Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - S. Satake
- Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - T. Kunugi
- Kyoto University, Yoshida, Sakyo, Kyoto, 606-8501 Japan
| | - N. B. Morley
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA
| | - M. A. Abdou
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA
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3
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Ueki Y, Hirabayashi M, Kunugi T, Yokomine T, Ara K. Acoustic Properties of Pb-17Li Alloy for Ultrasonic Doppler Velocimetry. Fusion Science and Technology 2017. [DOI: 10.13182/fst56-846] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Ueki
- Kyoto University, Yoshida, Sakyo, Kyoto, 606-8501, Japan
| | - M. Hirabayashi
- Japan Atomic Energy Agency, 4002 Narita, O-arai, Ibaraki, 311-1393, Japan
| | - T. Kunugi
- Kyoto University, Yoshida, Sakyo, Kyoto, 606-8501, Japan
| | - T. Yokomine
- Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukukoka, 816-8580, Japan
| | - K. Ara
- Japan Atomic Energy Agency, 4002 Narita, O-arai, Ibaraki, 311-1393, Japan
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4
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Yokomine T, Ebara S, Shimizu A. Thermo-Hydraulic Design of High Flux Test Module for IFMIF-EVEDA in Japan. Fusion Science and Technology 2017. [DOI: 10.13182/fst09-a8913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Yokomine
- Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, Japan 816-8580
| | - S. Ebara
- Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, Japan 816-8580
| | - A. Shimizu
- Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, Japan 816-8580
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5
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Muroga T, Sze DK, Okuno K, Terai T, Kimura A, Kurtz RJ, Sagara A, Nygren R, Ueda Y, Doerner RP, Sharpe JP, Kunugi T, Morley NB, Hatano Y, Sokolov MA, Yamamoto T, Hasegawa A, Katoh Y, Ohno N, Tokunaga K, Konishi S, Fukada S, Calderoni P, Yokomine T, Messadek K, Oya Y, Hashimoto N, Hinoki T, Hashizume H, Norimatsu T, Shikama T, Stoller RE, Tanaka KA, Tillack MS. Midterm Summary of Japan-US Fusion Cooperation Program TITAN. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12373] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - K. Okuno
- Shizuoka University, Shizuoka, Japan
| | - T. Terai
- University of Tokyo, Tokyo, Japan
| | | | | | | | | | - Y. Ueda
- Osaka University, Suita, Japan
| | | | | | | | | | | | | | | | | | | | - N. Ohno
- Nagoya University, Nagoya, Japan
| | | | | | | | | | | | | | - Y. Oya
- Shizuoka University, Shizuoka, Japan
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6
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Takeuchi J, Satake S, Kunugi T, Yokomine T, Morley NB, Abdou MA. Development of PIV Technique under Magnetic Fields and Measurement of Turbulent Pipe Flow of Flibe Simulant Fluid. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1600] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Takeuchi
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA 90095, USA
| | - S. Satake
- Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510 Japan
| | - T. Kunugi
- Kyoto University, Yoshida, Sakyo, Kyoto, 606-8501 Japan
| | - T. Yokomine
- Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - N. B. Morley
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA 90095, USA
| | - M. A. Abdou
- University of California, Los Angeles, 420 Westwood Plaza, 44-114 Eng. IV, Los Angeles, CA 90095, USA
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7
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Wakai E, Kikuchi T, Yokomine T, Yamamoto M, Soldaini M, Polato A. Analysis of Test Matrix and Design Status of Test Modules in IFMIF. Fusion Science and Technology 2017. [DOI: 10.13182/fst12-a14142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- E. Wakai
- Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | - T. Kikuchi
- Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai-mura, Naka-gun, Ibaraki-ken 319-1195, Japan
| | | | | | | | - A. Polato
- IFMIF0EVEDA Project Team, Rokkasho, Japan
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8
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Yamamoto DS, Yokomine T, Sumitani M, Yagi K, Matsuoka H, Yoshida S. Visualization and live imaging analysis of a mosquito saliva protein in host animal skin using a transgenic mosquito with a secreted luciferase reporter system. Insect Mol Biol 2013; 22:685-693. [PMID: 24118655 DOI: 10.1111/imb.12055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Mosquitoes inject saliva into a vertebrate host during blood feeding. The analysis of mosquito saliva in host skin is important for the elucidation of the inflammatory responses to mosquito bites, the development of antithrombotic drugs, and the transmission-blocking of vector-borne diseases. We produced transgenic Anopheles stephensi mosquitoes expressing the secretory luciferase protein (MetLuc) fused to a saliva protein (AAPP) in the salivary glands. The transgene product (AAPP-MetLuc) of transgenic mosquitoes exhibited both luciferase activity as a MetLuc and binding activity to collagen as an AAPP. The detection of luminescence in the skin of mice bitten by transgenic mosquitoes showed that AAPP-MetLuc was injected into the skin as a component of saliva via blood feeding. AAPP-MetLuc remained at the mosquito bite site in host skin with luciferase activity for at least 4 h after blood feeding. AAPP was also suspected of remaining at the site of injury caused by the mosquito bite and blocking platelet aggregation by binding to collagen. These results demonstrated the establishment of visualization and time-lapse analysis of mosquito saliva in living vertebrate host skin. This technique may facilitate the analysis of mosquito saliva after its injection into host skin, and the development of new drugs and disease control strategies.
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Affiliation(s)
- D S Yamamoto
- Division of Medical Zoology, Department of Infection and Immunity, Jichi Medical University, Shimotsuke, Japan
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9
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Yamamoto M, Arbeiter F, Yokomine T, Wakai E, Theile J, Garcia A, Rapisarda D, Casal N, Mas A, Gouat P, Leysen W. Current status of the engineering design of the test modules for the IFMIF. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.03.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Smolentsev S, Kunugi T, Messadek K, Yokomine T, Young J, Yuki K, Ueki Y, Sketchley T, Li FC, Morley N, Abdou M. Status of “TITAN” Task 1–3 “Flow Control and Thermofluid Modeling”. Fusion Engineering and Design 2012. [DOI: 10.1016/j.fusengdes.2012.02.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Pulmonary tumour thrombotic microangiopathy (PTTM) is characterised by wide spread tumour emboli along with fibrocellular intimal proliferation and thrombus formation in small pulmonary arteries and arterioles. PTTM is a rare but fatal complication of carcinoma, but the pathogenesis remains to be clarified. An autopsy case of PTTM caused by gastric adenocarcinoma is described, in which tumour cells in the PTTM lesion had positive immunoreactivity for platelet-derived growth factor (PDGF) and PDGF receptor (PDGFR), and proliferating fibromuscular intimal cells also showed expression of PDGFR. In addition, the overexpression of PGDF was detected in the alveolar macrophages. These findings suggest that PDGF derived from alveolar macrophages and from tumour cells may act together in promoting fibrocellular intimal proliferation. To the best of the authors' knowledge, the possible involvement of activated alveolar macrophages in PTTM has not been previously reported.
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Affiliation(s)
- Tatsuo Yokomine
- Department of Tumour and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8523, Japan
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12
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Yokomine T, Ebara S, Satake S, Kunugi T. Turbulent Heat Transfer in a Tube with Twisted Tape under a Magnetic Field. Fusion Science and Technology 2009. [DOI: 10.13182/fst09-a9047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Yokomine
- Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, Japan 816-8580
| | - S. Ebara
- Kyushu University, 6-1 Kasuga-kouen, Kasuga, Fukuoka, Japan 816-8580
| | - S. Satake
- Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan 278-8510
| | - T. Kunugi
- Kyoto University, Yoshida, Sakyo, Kyoto, Japan 606-8501
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13
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Maeda S, Shinchi H, Kurahara H, Mataki Y, Noma H, Maemura K, Aridome K, Yokomine T, Natsugoe S, Aikou T, Takao S. Clinical significance of midkine expression in pancreatic head carcinoma. Br J Cancer 2007; 97:405-11. [PMID: 17622248 PMCID: PMC2360321 DOI: 10.1038/sj.bjc.6603879] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Midkine (MK) is a heparin-binding growth factor and a product of a retinoic acid-responsive gene. Midkine is overexpressed in many carcinomas and thought to play an important role in carcinogenesis. However, no studies have been focussed on the role of MK in pancreatic carcinoma. This study sought to evaluate the clinical significance of MK expression in pancreatic head carcinoma, including the relationship between immunohistochemical expression and clinicopathologic factors such as prognosis. Immunohistochemical expression of MK and CD34 was evaluated in pancreatic head carcinoma specimens from 75 patients who underwent surgical resection. Midkine was expressed in 53.3% of patients. Midkine expression was significantly correlated with venous invasion, microvessel density, and liver metastasis (P=0.0063, 0.0025, and 0.0153, respectively). The 5-year survival rate was significantly lower for patients positive for MK vs patients negative for MK (P=0.0073). Multivariate analysis revealed that MK expression was an independent prognostic factor (P=0.0033). This is the first report of an association between MK expression and pancreatic head carcinoma. Midkine may play an important role in the progression of pancreatic head carcinoma, and evaluation of MK expression is useful for predicting malignant properties of pancreatic head carcinoma.
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Affiliation(s)
- S Maeda
- Department of Surgical Oncology and Digestive Surgery, Kagoshima University, Graduate School of Medical and Dental Science, 8-35-1 Sakuragaoka, Kagoshima 890-8520, Japan.
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14
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Yokomine T, Hata K, Tsudzuki M, Sasaki H. Evolution of the vertebrate DNMT3 gene family: a possible link between existence of DNMT3L and genomic imprinting. Cytogenet Genome Res 2006; 113:75-80. [PMID: 16575165 DOI: 10.1159/000090817] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2005] [Accepted: 11/02/2005] [Indexed: 11/19/2022] Open
Abstract
DNA methylation plays an essential role in genomic imprinting observed in eutherian mammals and marsupials. In mouse, one of the two de novo DNA methyltransferases, Dnmt3a, and a related protein, Dnmt3L have been shown to be essential for imprint establishment in the parental germline. To gain insights into the evolution of imprinting mechanisms, we have identified and characterized the DNMT3 family genes in other vertebrate species. We cloned cDNAs for chicken DNMT3A and DNMT3B, whose putative protein products shared 81.5% and 48.6% amino acid sequence identity with their mouse orthologues. Using computer-assisted database searches, we also identified DNMT3A and DNMT3B orthologues in fish (fugu and zebrafish) and marsupials (opossum). We found that, while opossums had an orthologue for DNMT3L, chickens and fish did not have this gene. Thus, unlike the other DNMT3 members, DNMT3L was restricted to the species in which imprinting occurs. The acquisition of DNMT3L by a common ancestor of eutherians and marsupials might have been closely related to the evolution of imprinting.
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Affiliation(s)
- T Yokomine
- Division of Human Genetics, Department of Integrated Genetics, National Institute of Genetics, Research Organization of Information and Systems, Mishima, Japan
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15
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Ebara S, Nagata S, Irisa H, Yokomine T, Shimizu A. Feasibly study on cast-like IFMIF high flux test module. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2005.08.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Matsuki K, Suzuki S, Ebara S, Yokomine T, Shimizu A. Dust mobilization by high-speed vapor flow under LOVA. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2005.09.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Takeuchi J, Satake S, Miraghaie R, Yuki K, Yokomine T, Kunugi T, Morley N, Abdou M. Study of heat transfer enhancement/suppression for molten salt flows in a large diameter circular pipe. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2005.09.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kuroiwa A, Yokomine T, Sasaki H, Tsudzuki M, Tanaka K, Namikawa T, Matsuda Y. Biallelic expression of Z-linked genes in male chickens. Cytogenet Genome Res 2004; 99:310-4. [PMID: 12900580 DOI: 10.1159/000071609] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2002] [Accepted: 12/19/2002] [Indexed: 11/19/2022] Open
Abstract
In birds, females are heterogametic (ZW), while males are homogametic (ZZ). It has been proposed that there is no dosage compensation for the expression of Z-linked genes in birds. In order to examine if the genes are inactivated on one of the two Z chromosomes, we analyzed the allelic expression of the B4GALT1 and CHD-Z genes on Z chromosomes in male chickens. One base substitution was detected among 15 chicken breeds and lines examined for each gene, and cross mating was made between the breeds or lines with polymorphism. cDNAs were synthesized from cultured cell colonies each derived from a single cell of an F1 male embryo. The allelic expression of the B4GALT1 gene was examined by restriction fragment length polymorphism analysis of the PCR products digested with RSAI, and that of the CHD-Z gene by the single nucleotide primer extension (SNuPE) method. Both of the genes displayed biallelic expression, suggesting that these Z-linked genes were not subject to inactivation in male chickens. Comparison between expression levels in males and females by real-time quantitative PCR suggested that expression was compensated for the CHD-Z gene but not for the B4GALT1 gene.
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Affiliation(s)
- A Kuroiwa
- Laboratory of Animal Cytogenetics, Center for Advanced Science and Technology, Hokkaido University, Sapporo, Japan.
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Yokomine T, Kuroiwa A, Tanaka K, Tsudzuki M, Matsuda Y, Sasaki H. Sequence polymorphisms, allelic expression status and chromosome locations of the chicken IGF2 and MPR1 genes. Cytogenet Cell Genet 2001; 93:109-13. [PMID: 11474191 DOI: 10.1159/000056960] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
By screening 26 chicken breeds and lines, DNA polymorphisms were identified in the IGF2 and MPR1 genes, of which mammalian homologues are parentally imprinted, and the GAPD gene, a housekeeping control. Using the polymorphisms as genetic markers, we found that all three genes are expressed biallelically in embryonic tissues. IGF2 and MPR1 were mapped on chicken chromosomes 5 and 3, respectively, by fluorescence in situ hybridization, demonstrating conserved linkage homology between mammals and birds.
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Affiliation(s)
- T Yokomine
- Division of Human Genetics, National Institute of Genetics, Graduate University for Advanced Studies, 1-111 Yata, Mishima 411-8540, Japan
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20
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Kato R, Shirohzu H, Yokomine T, Mizuno S, Mukai T, Sasaki H. Sequence-ready 1-Mb YAC, BAC and cosmid contigs covering the distal imprinted region of mouse chromosome 7. DNA Res 1999; 6:401-5. [PMID: 10691133 DOI: 10.1093/dnares/6.6.401] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We have constructed approximately 1-Mb contigs of yeast artificial chromosome (YAC), bacterial artificial chromosome (BAC) and cosmid clones covering the imprinted region in mouse chromosome band 7F4/F5. This region is syntenic to human chromosome 11p15.5, which is associated with Beckwith-Wiedemann syndrome (BWS) and certain childhood and adult tumors. These contigs provide the basis for genomic sequencing, identification of genes and their regulatory elements, and functional studies in transgenic and knockout mice, which should be of help to understand not only the mechanisms of imprinting but also the molecular events involved in the genesis of BWS and tumors.
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Affiliation(s)
- R Kato
- Department of Integrated Genetics, National Institute of Genetics and Graduate University for Advanced Studies, Mishima, Shizuoka, Japan
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