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Sofronova V, Fukushima Y, Masuno M, Naka M, Nagata M, Ishihara Y, Miyashita Y, Asano Y, Moriwaki T, Iwata R, Terawaki S, Yamanouchi Y, Otomo T. A novel nonsense variant in ARID1B causing simultaneous RNA decay and exon skipping is associated with Coffin-Siris syndrome. Hum Genome Var 2022; 9:26. [PMID: 35879281 PMCID: PMC9314373 DOI: 10.1038/s41439-022-00203-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/08/2022] [Accepted: 06/27/2022] [Indexed: 01/12/2023] Open
Abstract
Coffin-Siris syndrome (CSS) is a congenital disorder that is characterized by an absent/hypoplastic fifth distal phalanx, psychomotor developmental delay, and coarse facial features. One of the causative genes, ARID1B (AT-rich interactive domain-containing protein 1B), encodes components of the BAF chromatin remodeling complexes. Here, we report a case of a 3-year 8-month-old male with a novel nonsense variant (NM_001374820.1:c.4282C > T, p.(Gln1428*)) in the ARID1B gene, which was identified with whole-exome sequencing. He showed clinical symptoms of cleft soft palate, distinctive facial features (flat nasal bridge, thick eyebrows, and long eyelashes), right cryptorchidism, and hypertrichosis that partially overlapped with CSS. One of the most characteristic features of CSS is absent/hypoplastic fifth distal phalanx. He showed no obvious clinical finding in the lengths of his fingers or in the formation of his fingernails. However, radiographic analyses of the metacarpophalangeal bones revealed shortening of all the distal phalanges and fifth middle phalanges, suggesting brachydactyly. We performed mRNA analyses and revealed that both nonsense-mediated decay and nonsense-associated altered splicing were simultaneously caused by the c.4282C > T nonsense variant. The proband's clinical manifestations fit the previously reported criteria of disease for CSS or intellectual disability with ARID1B variant. Altogether, we suggest that c.4282C > T is a pathogenic variant that causes this clinical phenotype.
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Affiliation(s)
- Viktoriia Sofronova
- grid.415086.e0000 0001 1014 2000Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki, Japan ,grid.440700.70000 0004 0556 741XLaboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, Yakutsk, Russia
| | - Yu Fukushima
- grid.415664.40000 0004 0641 4765Division of Neonatology, National Hospital Organization Okayama Medical Center, Okayama, Japan
| | - Mitsuo Masuno
- grid.415106.70000 0004 0641 4861Department of Medical Genetics, Kawasaki Medical School Hospital, Kurashiki, Japan ,grid.412082.d0000 0004 0371 4682Genetic Counseling Program, Graduate School of Health and Welfare, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Mami Naka
- grid.412082.d0000 0004 0371 4682Genetic Counseling Program, Graduate School of Health and Welfare, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Miho Nagata
- grid.136593.b0000 0004 0373 3971Department of Cardiovascular Medicine (IRUD Analysis Center), Osaka University Graduate School of Medicine, Suita, Japan
| | - Yasuki Ishihara
- grid.136593.b0000 0004 0373 3971Department of Cardiovascular Medicine (IRUD Analysis Center), Osaka University Graduate School of Medicine, Suita, Japan
| | - Yohei Miyashita
- grid.136593.b0000 0004 0373 3971Department of Cardiovascular Medicine (IRUD Analysis Center), Osaka University Graduate School of Medicine, Suita, Japan
| | - Yoshihiro Asano
- grid.136593.b0000 0004 0373 3971Department of Cardiovascular Medicine (IRUD Analysis Center), Osaka University Graduate School of Medicine, Suita, Japan
| | - Takahito Moriwaki
- grid.415086.e0000 0001 1014 2000Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Rina Iwata
- grid.415086.e0000 0001 1014 2000Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Seigo Terawaki
- grid.415086.e0000 0001 1014 2000Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki, Japan
| | - Yasuko Yamanouchi
- grid.415106.70000 0004 0641 4861Department of Medical Genetics, Kawasaki Medical School Hospital, Kurashiki, Japan ,grid.412082.d0000 0004 0371 4682Genetic Counseling Program, Graduate School of Health and Welfare, Kawasaki University of Medical Welfare, Kurashiki, Japan
| | - Takanobu Otomo
- grid.415086.e0000 0001 1014 2000Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki, Japan ,grid.415106.70000 0004 0641 4861Department of Medical Genetics, Kawasaki Medical School Hospital, Kurashiki, Japan
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Vo KC, Wada A, Iwata R, Asada R, Sakamoto JJ, Furuta M, Tsuchido T. Evaluation of distinct modes of oxidative secondary injury generated in heat-treated cells of Escherichia coli with solid/liquid and complex/semi-synthetic media sets. J Appl Microbiol 2022; 133:2361-2374. [PMID: 35771133 DOI: 10.1111/jam.15697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 09/16/2021] [Revised: 05/26/2022] [Accepted: 06/27/2022] [Indexed: 11/28/2022]
Abstract
AIMS To characterize and evaluate oxidative secondary injury generated in heat-treated Escherichia coli cells during recovery cultivation either on agar or in a broth of a semi-synthetic enriched M9 (EM9) medium and a complex Luria broth (LB) medium with different types of antioxidants. METHODS AND RESULTS E. coli cells grown in the EM9 and LB broth were heated at 50o C in a buffer (pH7.0). Heated cells were recovered on the same kind of agar medium as that used for growth, with or without different antioxidants. Although these antioxidants mostly protected the cells from oxidative secondary injury on the recovery media, sodium thiosulfate and sodium pyruvate were most protective on EM9 and LB agars, respectively. Determination of viability using the most probable number and growth delay analysis methods showed significant reductions in the protective effects of antioxidants in the EM9 and LB media. CONCLUSION Oxidative secondary injury generated in heated E. coli cells was found to be qualitatively and quantitatively diverse under cellular and environmental conditions. SIGNIFICANCE AND IMPACT OF THE STUDY Our results suggest that different modes of oxidation should be considered in viability determination and injured cell enumeration of heat-treated cells.
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Affiliation(s)
- K C Vo
- Department of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
| | - A Wada
- Department of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
| | - R Iwata
- Department of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
| | - R Asada
- Department of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan.,Radiation Research Center, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan.,Research Center of Microorganism Control, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
| | - J J Sakamoto
- Research Center of Microorganism Control, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan.,Faculty of Materials, Chemistry, Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka, Japan
| | - M Furuta
- Department of Quantum and Radiation Engineering, Graduate School of Engineering, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan.,Radiation Research Center, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan.,Research Center of Microorganism Control, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
| | - T Tsuchido
- Research Center of Microorganism Control, Organization for Research Promotion, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai, Japan
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Sofronova V, Iwata R, Moriya T, Loskutova K, Gurinova E, Chernova M, Timofeeva A, Shvedova A, Vasilev F, Novgorodova S, Terawaki S, Moriwaki T, Sukhomyasova A, Maksimova N, Otomo T. Hematopoietic Disorders, Renal Impairment and Growth in Mucopolysaccharidosis-Plus Syndrome. Int J Mol Sci 2022; 23:ijms23105851. [PMID: 35628659 PMCID: PMC9145135 DOI: 10.3390/ijms23105851] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/18/2022] [Accepted: 05/22/2022] [Indexed: 12/21/2022] Open
Abstract
Mucopolysaccharidoses (MPS) are rare lysosomal storage disorders (LSD) characterized by the excessive accumulation of glycosaminoglycans (GAG). Conventional MPS, caused by inborn deficiencies of lysosomal enzymes involved in GAG degradation, display various multisystemic symptoms—including progressive neurological complications, ophthalmological disorders, hearing loss, gastrointestinal and hepatobiliary issues, cardiorespiratory problems, bone and joint abnormalities, dwarfism, and coarse facial features. Mucopolysaccharidosis-Plus Syndrome (MPSPS), an autosomal recessive disease caused by a mutation in the endo-lysosomal tethering protein VPS33A, shows additional renal and hematopoietic abnormalities (“Plus symptoms”) uncommon in conventional MPS. Here, we analyze data from biochemical, histological, and physical examinations—particularly of blood counts and kidney function—to further characterize the clinical phenotype of MPSPS. A series of blood tests indicate hematopoietic symptoms including progressive anemia and thrombocytopenia, which correlate with histological observations of hypoplastic bone marrow. High urinary excretion of protein (caused by impairments in renal filtration), hypoalbuminemia, and elevated levels of creatinine, cholesterol, and uric acid indicate renal dysfunction. Histological analyses of MPSPS kidneys similarly suggest the extensive destruction of glomerular structures by foamy podocytes. Height and weight did not significantly deviate from the average, but in some cases, growth began to decline at around six months or one year of age.
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Affiliation(s)
- Viktoriia Sofronova
- Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan; (V.S.); (R.I.); (S.T.); (T.M.)
- Laboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, 677013 Yakutsk, Russia; (F.V.); (S.N.); (A.S.); (N.M.)
| | - Rina Iwata
- Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan; (V.S.); (R.I.); (S.T.); (T.M.)
| | - Takuya Moriya
- Department of Pathology, Kawasaki Medical School, Kurashiki 701-0192, Japan;
| | - Kiunniai Loskutova
- Department of Pathological Anatomy, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia;
- Medical Institute, North-Eastern Federal University, 677013 Yakutsk, Russia
| | - Elizaveta Gurinova
- Medical Genetics Center, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia;
| | - Mairanush Chernova
- Department of Children’s Health and Pathological Anatomy, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia; (M.C.); (A.T.); (A.S.)
| | - Anastasia Timofeeva
- Department of Children’s Health and Pathological Anatomy, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia; (M.C.); (A.T.); (A.S.)
| | - Anna Shvedova
- Department of Children’s Health and Pathological Anatomy, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia; (M.C.); (A.T.); (A.S.)
| | - Filipp Vasilev
- Laboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, 677013 Yakutsk, Russia; (F.V.); (S.N.); (A.S.); (N.M.)
| | - Saina Novgorodova
- Laboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, 677013 Yakutsk, Russia; (F.V.); (S.N.); (A.S.); (N.M.)
| | - Seigo Terawaki
- Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan; (V.S.); (R.I.); (S.T.); (T.M.)
| | - Takahito Moriwaki
- Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan; (V.S.); (R.I.); (S.T.); (T.M.)
| | - Aitalina Sukhomyasova
- Laboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, 677013 Yakutsk, Russia; (F.V.); (S.N.); (A.S.); (N.M.)
- Medical Genetics Center, Republic Hospital No. 1—National Center of Medicine, 677019 Yakutsk, Russia;
| | - Nadezhda Maksimova
- Laboratory of Molecular Medicine and Human Genetics, North-Eastern Federal University, 677013 Yakutsk, Russia; (F.V.); (S.N.); (A.S.); (N.M.)
| | - Takanobu Otomo
- Department of Molecular and Genetic Medicine, Kawasaki Medical School, Kurashiki 701-0192, Japan; (V.S.); (R.I.); (S.T.); (T.M.)
- Correspondence: ; Tel.: +81-86-462-1111
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Ezura M, Kikuchi A, Ishiki A, Okamura N, Hasegawa T, Harada R, Watanuki S, Funaki Y, Hiraoka K, Baba T, Sugeno N, Oshima R, Yoshida S, Kobayashi J, Kobayashi M, Tano O, Nakashima I, Mugikura S, Iwata R, Taki Y, Furukawa K, Arai H, Furumoto S, Tashiro M, Yanai K, Kudo Y, Takeda A, Aoki M. Longitudinal changes in 18 F-THK5351 positron emission tomography in corticobasal syndrome. Eur J Neurol 2019; 26:1205-1211. [PMID: 30980575 DOI: 10.1111/ene.13966] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 12/05/2018] [Accepted: 04/04/2019] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND PURPOSE Corticobasal syndrome (CBS) is pathologically characterized by tau deposits in neuronal and glial cells and by reactive astrogliosis. In several neurodegenerative disorders, 18 F-THK5351 has been observed to bind to reactive astrocytes expressing monoamine oxidase B. In this study, the aim was to investigate the progression of disease-related pathology in the brains of patients with CBS using positron emission tomography with 18 F-THK5351. METHODS Baseline and 1-year follow-up imaging were acquired using magnetic resonance imaging and positron emission tomography with 18 F-THK5351 in 10 subjects: five patients with CBS and five age-matched normal controls (NCs). RESULTS The 1-year follow-up scan images revealed that 18 F-THK5351 retention had significantly increased in the superior parietal gyrus of the patients with CBS compared with the NCs. The median increases in 18 F-THK5351 accumulation in the patients with CBS were 6.53% in the superior parietal gyrus, 4.34% in the precentral gyrus and 4.33% in the postcentral gyrus. In contrast, there was no significant increase in the regional 18 F-THK5351 retention in the NCs. CONCLUSIONS Longitudinal increases in 18 F-THK5351 binding can be detected over a short interval in the cortical sites of patients with CBS. A monoamine oxidase B binding radiotracer could be useful in monitoring the progression of astrogliosis in CBS.
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Affiliation(s)
- M Ezura
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - A Kikuchi
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - A Ishiki
- Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - N Okamura
- Division of Pharmacology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - T Hasegawa
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - R Harada
- Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Watanuki
- Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - Y Funaki
- Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - K Hiraoka
- Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - T Baba
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - N Sugeno
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - R Oshima
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - S Yoshida
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - J Kobayashi
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - M Kobayashi
- Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - O Tano
- Department of Neurology, Sendai Medical Center, Sendai, Japan
| | - I Nakashima
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Neurology, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - S Mugikura
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - R Iwata
- Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - Y Taki
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - K Furukawa
- Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Division of Community of Medicine, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - H Arai
- Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - S Furumoto
- Division of Radiopharmaceutical Chemistry, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - M Tashiro
- Division of Cyclotron Nuclear Medicine, Cyclotron and Radioisotope Center, Tohoku University, Sendai, Japan
| | - K Yanai
- Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Y Kudo
- Division of Neuroimaging, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - A Takeda
- Department of Neurology, National Hospital Organization, Sendai Nishitaga Hospital, Sendai, Japan
| | - M Aoki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
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Bogni A, Laera L, Cucchi C, Iwata R, Seregni E, Pascali C. An improved automated one-pot synthesis of O-(2-[18F]fluoroethyl)-L-tyrosine ([18F]FET) based on a purification by cartridges. Nucl Med Biol 2019; 72-73:11-19. [DOI: 10.1016/j.nucmedbio.2019.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/09/2019] [Accepted: 05/14/2019] [Indexed: 10/26/2022]
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Saito T, Iwata R, Maruyama M, Nakano Y, Ofune K, Matsuda S, Kaibori M, Murakawa T, Hayashi M. P2.03-05 Biologic Profiling of Brain Metastasis from Non-Small Cell Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1192] [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: 10/28/2022]
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Iwata R, Asai A, Oshige H, Yoshimura K, Nonaka M, Nakano I. IT-14 * MESENCHYMAL GLIOMA STEM CELL EXPRESS ICOSL. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou258.12] [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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Iwata R, Asai A, Ito T, Oshige H, Yoshimura K, Nonaka M. CN-08 * THERAPEUTIC CONCENTRATION OF TEMOZOLOMIDE DO NOT IMPAIR THE FUNCTION OF HUMAN DENDRITIC CELL SUBSETS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou243.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Abe T, Momii Y, Morisaki I, Sasaki M, Watanabe J, Kamida T, Kashino G, Matsumoto S, Hayashi K, Mori H, Nakayama K, Beppu T, Ogasawara K, Terasaki K, Iwata R, Fujiki M. NI-01 * GENE PROFILES IN HIGH UPTAKE AREA ON POSITRON EMISSION TOMOGRAPHY WITH A HYPOXIC CELL TRACER, 18F-FRP170. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou264.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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10
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Nonaka M, Okita Y, Kanemura Y, Goto H, Kamei T, Iwata R, Takeda J, Oshige H, Yoshimura K, Asai A. NT-27 * SURGICAL RESECTION OF THALAMIC MALIGNANT GLIOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou265.25] [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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11
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Asai A, Iwata R, Ito T, Oshige H, Yoshimura K, Takeda JI. EFFECT OF TEMOZOMIDE ON HUMAN DENDRITIC CELLS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou209.4] [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: 11/12/2022] Open
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12
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Kobayashi NI, Iwata N, Saito T, Suzuki H, Iwata R, Tanoi K, Nakanishi TM. Application of 28Mg for characterization of Mg uptake in rice seedling under different pH conditions. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2010-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Hiraoka K, Okamura N, Funaki Y, Hayashi A, Tashiro M, Hisanaga K, Fujii T, Takeda A, Yanai K, Iwata R, Mori E. Cholinergic Deficit and Response to Donepezil Therapy in Parkinson's Disease with Dementia: [5-11C-Methoxy]donepezil-PET Study (P04.189). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p04.189] [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: 11/15/2022] Open
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Iwata R, Stieger B, Mertens JC, Müller T, Baur K, Frei P, Braun J, Vergopoulos A, Martin IV, Schmitt J, Goetze O, Bibert S, Bochud PY, Müllhaupt B, Berg T, Geier A. The role of bile acid retention and a common polymorphism in the ABCB11 gene as host factors affecting antiviral treatment response in chronic hepatitis C. J Viral Hepat 2011; 18:768-78. [PMID: 20723035 DOI: 10.1111/j.1365-2893.2010.01363.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The outcome of hepatitis C virus (HCV) infection and the likelihood of a sustained virological response (SVR) to antiviral therapy depends on both viral and host characteristics. In vitro studies demonstrated that bile acids (BA) interfere with antiviral interferon effects. We investigate the influence of plasma BA concentrations and an ABCB11 polymorphism associated with lower transporter expression on viral load and SVR. Four hundred and fifty-one Caucasian HCV-patients treated with PEG-interferon and ribavirin were included in the study. ABCB11 1331T>C was genotyped, and plasma BA levels were determined. The 1331C allele was slightly overrepresented in HCV-patients compared to controls. In HCV-patients, a significant difference between patients achieving SVR vs non-SVR was observed for HCV-2/3 (5 vs 9 μm; P=0.0001), while median BA levels in HCV-1 were marginally elevated. Normal BA levels <8 μm were significantly associated with SVR (58.3%vs 36.3%; OR 2.48; P=0.0001). This difference was significant for HCV-2/3 (90.7%vs 67.6%; P=0.002) but marginal in HCV-1 (38.7%vs 27.8%; P=0.058). SVR rates were equivalent between ABCB11 genotypes for HCV-1, but increased for HCV-2/3 (TT 100%vs CC 78%; OR 2.01; P=0.043). IL28B genotype had no influence on these associations. No correlation between BA levels and HCV RNA was detected for any HCV genotype. The higher allelic frequency of ABCB11 1331C in HCV-patients compared to controls may indirectly link increased BA to HCV chronicity. Our data support a role for BA as host factor affecting therapy response in HCV-2/3 patients, whereas a weaker association was found for HCV-1.
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Affiliation(s)
- R Iwata
- Clinic for Gastroenterology & Hepatology, University Hospital Zurich, Rämistrasse 100, Zurich, Switzerland
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Takahashi T, Ido T, Iwata R, Ishiwata K. Preparation of methyl-branched [ω-18F]fluorofatty acids and their tissue distributions. J Labelled Comp Radiopharm 2011. [DOI: 10.1002/jlcr.25802601189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bogni A, Crispu O, Fugazza L, Cucchi C, Laera L, Iwata R, Crippa F, Bombardieri E, Pascali C. [N-Methyl-11C]choline by on-column reaction: a study on [11C]CH3I incorporation and the residual amount of precursor in the product. J Labelled Comp Radiopharm 2010. [DOI: 10.1002/jlcr.1838] [Citation(s) in RCA: 2] [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: 11/12/2022]
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17
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Nishikawa T, Ueba T, Kajiwara M, Iwata R, Yamashita K. Combined Treatment of Ruptured Aneurysm Accompanied by Intraventricular Hemorrhage; Neuroendoscopy and Coiling: Case Report. ACTA ACUST UNITED AC 2008; 51:354-7. [DOI: 10.1055/s-0028-1085453] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Hamano N, Inada T, Iwata R, Asai T, Shingu K. The alpha2-adrenergic receptor antagonist yohimbine improves endotoxin-induced inhibition of gastrointestinal motility in mice. Br J Anaesth 2007; 98:484-90. [PMID: 17363407 DOI: 10.1093/bja/aem011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Sepsis inhibits gastrointestinal motility. Although the exact mechanism of this is unclear, lipopolysaccharide is known to activate macrophages in the gastrointestinal wall, which upregulate their expression of inducible nitric oxide synthase (iNOS). This leads to an increased production of nitric oxide, which relaxes the gastrointestinal muscles. We studied endotoxaemic mice to determine whether yohimbine improved delayed gastric emptying and gastrointestinal transit. METHODS Male Balb/c mice (n = 49) were randomly allocated to two groups, and either yohimbine 25 microg or saline was injected s.c. Four hours later, mice in each group were further randomly allocated to two groups, and either lipopolysaccharide 100 microg or saline was injected intraperitoneally. Eight hours later, liquid containing fluorescent microbeads was infused into the stomach, and 30 min later, gastric emptying and gastrointestinal transit were measured using flow cytometry. We also studied whether yohimbine given after injection of lipopolysaccharide was effective (n = 22). In another group of mice (n = 32), iNOS in the gastrointestinal tract was measured using western blotting. RESULTS Lipopolysaccharide significantly inhibited gastric emptying and gastrointestinal transit. Yohimbine, given before or after lipopolysaccharide, significantly attenuated the inhibitory effects of lipopolysaccharide. Lipopolysaccharide increased the expression of iNOS in the small intestine and yohimbine suppressed the effects of lipopolysaccharide. CONCLUSIONS In endotoxaemic mice, yohimbine improved delayed gastric emptying and gastrointestinal transit, possibly by downregulating lipopolysaccharide-induced increased expression of iNOS.
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Affiliation(s)
- N Hamano
- Department of Anaesthesiology, Kansai Medical University, Osaka, Japan
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Takahashi T, Ido T, Iwata R, Ishiwata K, Hamamura K, Kogure K. [11C]Labeling of coenzyme Q10 and its tissue distribution. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580220606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Ishikawa Y, Iwata R, Furumoto S, Takai Y. Automated preparation of hypoxic cell marker [18F]FRP-170 by on-column hydrolysis. Appl Radiat Isot 2005; 62:705-10. [PMID: 15763476 DOI: 10.1016/j.apradiso.2004.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 08/24/2004] [Revised: 09/21/2004] [Accepted: 09/27/2004] [Indexed: 10/26/2022]
Abstract
An automated synthesis for the preparation of the novel hypoxic cell marker, [(18)F]FRP-170 3, [(18)F]1-[2-fluoro-1-(hydroxymethyl)ethoxy]methyl-2- nitroimidazole, was developed using an on-column basic-hydrolysis step. The (18)F-labeled protected intermediate 2 was retained on a Sep-Pak Plus C18 cartridge and, in the same cartridge at room temperature, hydrolyzed by NaOH for deacetylation to give [(18)F]FRP-170. The elution method from the cartridge was optimized for direct injection of the crude product into an HPLC column. Thus, [(18)F]FRP-170 was prepared in 20-30% decay-corrected radiochemical yield within 60 min.
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Affiliation(s)
- Y Ishikawa
- CYRIC Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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21
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Iwata R, Pascali C, Bogni A, Yanai K, Kato M, Ido T, Ishiwata K. A combined loop-SPE method for the automated preparation of [11C]doxepin. J Labelled Comp Radiopharm 2002. [DOI: 10.1002/jlcr.557] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Ohbayashi T, Oikawa K, Iwata R, Kameta A, Evine K, Isobe T, Matsuda Y, Mimura J, Fujii-Kuriyama Y, Kuroda M, Mukai K. Dioxin induces a novel nuclear factor, DIF-3, that is implicated in spermatogenesis. FEBS Lett 2001; 508:341-4. [PMID: 11728448 DOI: 10.1016/s0014-5793(01)03039-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD; dioxin), a member of a class of environmental pollutants represented by polychlorinated dibenzo-p-dioxins and dibenzofurans, is one of the most toxic artificial compounds ever developed. In this study, we identified a novel TCDD target gene, DIF-3 (dioxin inducible factor-3), by cDNA representational difference analysis. DIF-3 protein is a nuclear factor and possesses a zinc-finger motif at its N-terminus. High DIF-3 mRNA expression in the testes was demonstrated by Northern blot analysis and abundant DIF-3 protein was detected during spermatogenesis. Thus, these results suggest that DIF-3 may be a target gene mediating the reproductive toxicity induced by TCDD.
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Affiliation(s)
- T Ohbayashi
- Department of Pathology, Tokyo Medical University, Japan
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23
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Mizugaki M, Nakagawa N, Nakamura H, Hishinuma T, Tomioka Y, Ishiwata S, Ido T, Iwata R, Funaki Y, Itoh M, Higuchi M, Okamura N, Fujiwara T, Sato M, Shindo K, Yoshida S. Influence of anesthesia on brain distribution of [(11)C]methamphetamine in monkeys in positron emission tomography (PET) study. Brain Res 2001; 911:173-5. [PMID: 11511387 DOI: 10.1016/s0006-8993(01)02669-5] [Citation(s) in RCA: 5] [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: 11/18/2022]
Abstract
We investigated the influence of anesthesia on the brain distribution of [11C]methamphetamine (MAP) obtained by the positron emission tomography (PET) using the normal rhesus monkeys. We clarified that the brain uptake of [11C]MAP under halothane anesthesia was faster and higher than that under pentobarbital. The difference of the effect of anesthesia is an important problem in pharmacokinetic study in PET with experimental animals.
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Affiliation(s)
- M Mizugaki
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
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24
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Oikawa K, Ohbayashi T, Mimura J, Iwata R, Kameta A, Evine K, Iwaya K, Fujii-Kuriyama Y, Kuroda M, Mukai K. Dioxin suppresses the checkpoint protein, MAD2, by an aryl hydrocarbon receptor-independent pathway. Cancer Res 2001; 61:5707-9. [PMID: 11479202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
The compound 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) has been shown recently to be carcinogenic, but little is currently known about the molecular mechanism of TCDD affecting cell proliferation and carcinogenesis. In this report, we demonstrate that TCDD suppresses the expression of the checkpoint protein, Mad2. Suppression of Mad2 was also observed in aryl hydrocarbon receptor-deficient mouse embryonic fibroblasts, suggesting that TCDD suppresses Mad2 by a novel TCDD receptor signaling mechanism. In addition, HeLa cells treated with TCDD failed to arrest in mitosis after nocodazole treatment. The Mad2 protein plays a significant role in accurate chromosome segregation in mitotic cells. Our data suggest that TCDD may increase chromosomal instability through the suppression of Mad2 expression.
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Affiliation(s)
- K Oikawa
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation, Tokyo 160-8402, Japan
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25
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Iwata R, Pascali C, Bogni A, Miyake Y, Yanai K, Ido T. A simple loop method for the automated preparation of (11C)raclopride from (11C)methyl triflate. Appl Radiat Isot 2001; 55:17-22. [PMID: 11339532 DOI: 10.1016/s0969-8043(00)00368-7] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [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: 11/23/2022]
Abstract
A simple automated preparation of [11C]raclopride by reaction of [11C]methyl triflate with demethylraclopride triflate is described. The conventional bubbling of [11C]methyl triflate into the precursor solution was compared with two alternative methods which used a commercially available C18 cartridge (on-column method) or an empty PTFE tube (loop method) as support for the precursor solution. The influence of several solvents was assessed for all three methods. The on-column method showed excellent trapping efficiencies of [11C]methyl triflate but gave the lowest radiochemical yields. The loop method proved to be a simplified alternative to the bubbling method, giving comparable radiochemical yields with less precursor and offering an easy way to transfer the reaction mixture into an HPLC column. By the simple-loop method [11C]raclopride could be prepared in over 40% radiochemical yields (decay-corrected and based on [11C]methyl triflate).
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Affiliation(s)
- R Iwata
- Graduate School of Engineering, Tohoku University, Sendai, Japan.
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26
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Iwata R, Pascali C, Bogni A, Yanai K, Kato M, Ido T, Ishiwata K. Preparation of [11C]doxepin from [11C]methyl triflate by loop method: Effect of specific activity on [11C]methylation. J Labelled Comp Radiopharm 2001. [DOI: 10.1002/jlcr.25804401347] [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: 11/09/2022]
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Abstract
A better understanding of the growth rate of pancreatic carcinoma is important in determining its natural course and in evaluating the effects of treatment or prognosis. The authors studied the growth rate of pancreatic carcinoma and the relation between its tumor volume doubling time (TVDT) and host survival. Nine patients with pancreatic carcinoma who underwent serial examinations by helical computed tomography but no anticancer treatment during the observation period were included. The TVDTs were calculated by measuring the tumor size on the helical computed tomograms. The mean TVDT of the nine primary lesions of pancreatic carcinoma was 159 +/- 67 days (median, 144 days), and the range was 64 to 255 days. The correlation between TVDT and survival time was positive and significant (r = 0.793, p = 0.011). This preliminary study suggests that examination of TVDT may be useful in the clinical evaluation of prognosis for patients with pancreatic carcinoma in certain situations.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
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28
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Abstract
We evaluated computed tomography during arterial portography (CTAP) for the preoperative evaluation of liver metastases from pancreatic carcinoma. Thirty-one patients with invasive ductal carcinoma of the pancreas underwent CTAP for evaluation of liver metastasis. Diagnostic accuracy of CTAP was compared with that of intravenous contrast-enhanced CT (IVCT). In this series, both CTAP and IVCT showed the same diagnostic accuracy for the patients. The sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy of both CT examinations for detecting liver metastases were 60% (three of five), 100% (26 of 26), 100% (three of three), 93% (26 of 28), and 94% (29 of 31), respectively. CTAP did not confer any advantage over IVCT for the preoperative evaluation of liver metastases from pancreatic carcinoma.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
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29
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Takayasu K, Muramatsu Y, Maeda T, Iwata R, Furukawa H, Muramatsu Y, Moriyama N, Okusaka T, Okada S, Ueno H. Targeted transarterial oily chemoembolization for small foci of hepatocellular carcinoma using a unified helical CT and angiography system: analysis of factors affecting local recurrence and survival rates. AJR Am J Roentgenol 2001; 176:681-8. [PMID: 11222205 DOI: 10.2214/ajr.176.3.1760681] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE We assessed the local recurrence rate after a single targeted transarterial oily chemoembolization for small hepatocellular carcinoma with the unified helical CT and angiography system and analyzed the factors affecting the local recurrence rate and survival rate with Cox proportional hazards model. MATERIALS AND METHODS For 54 consecutive patients with 71 small hepatocellular carcinomas (< or = 5 cm) with no more than two associated lesions, targeted oily chemoembolization was performed with an emulsion of doxorubicin hydrochloride mixed with iodized oil or a suspension of zinostatin stimalamer followed by gelatin sponge particles. When local recurrence or a new lesion appeared, follow-up targeted oily chemoembolization was performed. RESULTS For 52 of 71 lesions, the catheterization to a subsegmental or more distal feeding artery could be performed. Local recurrence was recognized in 33.2% at 1 year and 37.8% at 2 and 3 years. The significant factors that affected local recurrence were tumor size (p = 0.005) and degree of deposition of iodized oil within the lesion (p = 0.049). The survival rates at 1, 2, and 3 years were 93.3%, 77.1%, and 77.1%, respectively. The significant factors affecting survival rate were tumor thrombus in large vessels (p = 0.0001), appearing after the first chemoembolization, and maximum tumor size (p = 0.022). CONCLUSION Single targeted transarterial oily chemoembolization with the unified helical CT and angiography system had a low local recurrence rate for small hepatocellular carcinoma, and follow-up embolization resulted in a good survival rate. Tumor size along with degree of intratumoral iodized oil deposition and tumor thrombus along with maximum tumor size were significant factors affecting local recurrence and survival rate, respectively.
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Affiliation(s)
- K Takayasu
- Department of Diagnostic Radiology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104-0045, Japan
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30
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Higuchi M, Yanai K, Okamura N, Meguro K, Arai H, Itoh M, Iwata R, Ido T, Watanabe T, Sasaki H. Histamine H(1) receptors in patients with Alzheimer's disease assessed by positron emission tomography. Neuroscience 2001; 99:721-9. [PMID: 10974435 DOI: 10.1016/s0306-4522(00)00230-x] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cerebral histamine H(1) receptor binding was measured in vivo in 11 normal subjects (six young and five old) and 10 patients with Alzheimer's disease by positron emission tomography and [11C]doxepin, a radioligand for H(1) receptors. The parametric images describing the tracer kinetics were generated by either compartmental or graphical analysis, and were examined statistically on region-of-interest and voxel-by-voxel bases. The binding potential of H(1) receptors showed a significant decrease particularly in the frontal and temporal areas of the Alzheimer's disease brain compared to the old, normal subjects. In addition, the receptor binding correlated closely to the severity of Alzheimer's disease assessed by the Mini-Mental State Examination score within several brain areas. The ratio of K1 values between the brain areas and the cerebellum was used as a relative measure of regional cerebral blood flow which decreased in the frontal and temporal areas of the Alzheimer's disease brain. However, the difference in the binding potential (total concentration of receptor/equilibrium dissociation constant) between the Alzheimer's disease patients and the old, normal subjects was greater than that in the cerebral blood flow, and the rate of decrease in the binding potential with the progression of Alzheimer's disease was greater than the rate of decrease in the cerebral blood flow. This study reveals the predominant disruption of the histaminergic neurotransmission in the neurodegenerative processes of Alzheimer's disease. This study suggests that the decline of the histamine receptor binding might play a substantial role in the cognitive deficits of Alzheimer's disease patients.
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Affiliation(s)
- M Higuchi
- Department of Geriatric Medicine, Tohoku University School of Medicine, 980-8574, Sendai, Japan
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31
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Furukawa H, Iwata R, Moriyama N. Angiographic assessment of the right hepatic artery for encasement by hilar cholangiocarcinoma: comparison between antero-posterior and right anterior oblique projections. Cardiovasc Intervent Radiol 2001; 24:37-41. [PMID: 11178711 DOI: 10.1007/s002700000392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To evaluate the usefulness of right anterior oblique (RAO) arteriography for evaluating encasement of the right hepatic artery (RHA) by hilar cholangiocarcinoma. METHODS Celiac arteriography was performed in both the antero-posterior (AP) and RAO projection in ten patients with cholangiocarcinoma. The lengths of the arteries between the bifurcation of the anterior and posterior branch of the liver and the following points were measured: (a) the bifurcation of the left and right hepatic artery (AP-LR), (b) the bifurcation of the proper hepatic artery and the gastroduodenal artery (AP-PG). Additionally, image quality in investigating the invasion of the RHA was evaluated. RESULTS On the AP images, the average lengths of AP-LR and AP-PG were 24.5 +/- 5.1 mm and 30.0 +/- 4.9 mm, respectively. On RAO images, the lengths were 28.2 +/- 4.6 mm and 32.7 +/- 4.8 mm, respectively. Every length was different between the two projections (p < 0.01). In 6 of 10 patients with hilar cholangiocarcinoma, images in RAO projections were superior to AP images for evaluation of encasement. CONCLUSION We conclude that angiography obtained in the RAO projection yields images that are superior to those obtained in the conventional AP projection for assessment of RHA encasement.
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Affiliation(s)
- H Furukawa
- Department of the Diagnostic Radiology, National Cancer Center Hospital, 5-1-1, Tsukiji, Chuo-ku, Tokyo 104, Japan.
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Furukawa H, Iwata R, Moriyama N, Kosuge T. Selective intraarterial contrast-enhanced CT of pancreaticoduodenal tumors: early clinical experience in evaluating blood supply and detectability. AJR Am J Roentgenol 2000; 175:91-7. [PMID: 10882253 DOI: 10.2214/ajr.175.1.1750091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The purpose of this study was to compare CT with selective intraarterial contrast enhancement with IV contrast-enhanced CT for diagnostic usefulness in the detection of tumors in the pancreaticoduodenal region. SUBJECTS AND METHODS intraarterial contrast enhanced CT was performed in 36 patients with tumors of the pancreaticoduodenal region. Feeding arteries of the tumors and distribution of hyperattenuating areas on intraarterial contrast-enhanced CT were analyzed with various routes of contrast material injections. The intraarterial contrast-enhanced CT scans were compared with the IV contrast-enhanced CT scans. RESULTS In all 29 patients with standard vascular anatomy, the right cephalic portion of the pancreatic head was enhanced on CT during common hepatic or gastroduodenal arteriography and the left caudal portion was enhanced on CT during superior mesenteric arteriography. The enhanced areas were complementary to each other in the whole pancreatic head, including the tumor. Tumor conspicuity from the surrounding pancreatic tissue on intraarterial contrast-enhanced CT was not superior to that on IV contrast-enhanced CT in all but four patients with cystic tumors. After intraarterial contrast-enhanced CT, three patients with tumors less invasive than pancreatic ductal carcinoma underwent local resection of their lesions. CONCLUSION Intraarterial contrast-enhanced CT for pancreaticoduodenal tumors has potential technical problems and is not valuable in improving the detectability of tumors other than cystic lesions because the enhancement of the wall and septa of the tumor is emphasized. However, the feeding artery of the tumor and its surrounding tissue were clearly depicted.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology and the Department of Surgery, National Cancer Center Hospital, Tokyo, Japan
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Furukawa H, Sano K, Kosuge T, Shimada K, Yamamoto J, Iwata R, Moriyama N. Hilar cholangiocarcinoma evaluated by three-dimensional CT cholangiography and rotating cine cholangiography. Hepatogastroenterology 2000; 47:615-20. [PMID: 10918998] [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: 02/17/2023]
Abstract
BACKGROUND/AIMS To evaluate the usefulness of three-dimensional cholangiography and rotating cine cholangiography in depicting the anatomy of the hilar bile duct and tumor extension, and in planning surgical procedures for hilar cholangiocarcinomas. METHODOLOGY Five patients with hilar cholangiocarcinoma and obstructive jaundice who underwent percutaneous transhepatic biliary drainage followed by resection were serially examined by cine cholangiography and three-dimensional cholangiography which were reconstructed from a helical computed tomography scan. Tumor extension to the bile ducts was prospectively diagnosed and the resection margin was planned using both cine and three-dimensional cholangiograms. The histological evaluation of the resected specimens were compared with preoperative findings of cholangiograms. RESULTS The three-dimensional cholangiograms from vertical projection demonstrated the bile duct anatomy with excellent image quality. To assess tumor invasion to the intrahepatic bile ducts, cine cholangiograms from lateral and oblique projections were necessary. Selection of the surgical procedure was influenced by preoperative evaluations of the lesion on both three-dimensional and cine cholangiograms. Histologically, the resected margin was free from tumor in all cases. CONCLUSIONS Three-dimensional and cine cholangiography allowed accurate assessment of the biliary system in patients with hilar cholangiocarcinoma, which was helpful for planning the surgical procedure.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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35
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Okusaka T, Okada S, Ueno H, Ikeda M, Yoshimori M, Shimada K, Yamamoto J, Kosuge T, Yamasaki S, Iwata R, Furukawa H, Moriyama N, Sakamoto M, Hirohashi S. Evaluation of the therapeutic effect of transcatheter arterial embolization for hepatocellular carcinoma. Oncology 2000; 58:293-9. [PMID: 10838494 DOI: 10.1159/000012115] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Transcatheter arterial embolization (TAE) has been widely performed for patients with hepatocellular carcinoma (HCC). However, the method of evaluating the therapeutic effect of TAE has not been established. We examined the rate of necrotic area to whole tumor (TN) by CT, the tumor regression rate (TR) and the reduction rate in serum alpha-fetoprotein (AFP) levels in patients with HCC who received hepatic resection within 3 months after TAE. In the evaluation of TN, the lipiodol accumulation in tumor was regarded as being necrotic. Rates of necrotic area, which were also examined pathologically (PN) in resected tumors, were compared with TN, TR and AFP reduction rates, respectively. Eighty-eight patients were enrolled in this study, and there was a significant positive correlation between TN and PN (r = 0.80, p < 0.001). Although TR significantly correlated to PN (p = 0.001), the correlation coefficient between them was low (r = 0.34). The correlation coefficients between AFP reduction rate and PN was 0.76 (p < 0.001) in 26 patients (30%) with an AFP level >/=200 ng/ml before TAE. The evaluation method using lipiodol accumulation in CT is the most useful for assessing the therapeutic effect of TAE, particularly when a sufficiently long interval exists between TAE and the evaluation, because of the highest correlation coefficient between TN and PN, and the availability of TN for all patients. The reduction rate in serum AFP levels was also useful in patients with AFP levels >200 ng/ml before treatment.
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Affiliation(s)
- T Okusaka
- Department of Internal Medicine, National Cancer Center Hospital, Tokyo, Japan.
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36
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Iwata R, Pascali C, Bogni A, Horvath G, Kovacs Z, Yanai K, Ido T. A new, convenient method for the preparation of 4-[18F]fluorobenzyl halides. Appl Radiat Isot 2000; 52:87-92. [PMID: 10670927 DOI: 10.1016/s0969-8043(99)00117-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A convenient method suitable for automated preparation of 4-[18F]fluorobenzyl halides from no-carrier-added [18F]fluoride has been developed. 4-[18F]Fluorobenzaldehyde, synthesized from [18F]fluoride by aromatic nucleophilic substitution on 4-trimethylammoniumbenzaldehyde triflate, was first retained on a C18 cartridge and there efficiently reduced to 4-[18F]fluorobenzyl alcohol simply by flowing an aqueous solution of NaBH4. The conversion of 4-[18F]fluorobenzyl alcohol to 4-[18F]fluorobenzyl halide was investigated using PBr3, PI3, P2I4, Ph3PBr2 and Ph3PI2 in CH2Cl2. 4-[18F]Fluorobenzyl halides were purified by passing through a disposable silica cartridge. The conversion rapidly proceeded in radiochemical yields of nearly 90% at 40 degrees C with P2I4 and almost quantitatively at room temperature with Ph3PBr2. With this last reagent 4-[18F]fluorobenzyl bromide was obtained in overall radiochemical yields of 50-60% within 30 min from EOB.
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Affiliation(s)
- R Iwata
- CYRIC Tohoku University, Sendai, Japan.
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Furukawa H, Iwata R, Moriyama N, Kosuge T. Blood supply to the pancreatic head, bile duct, and duodenum: evaluation by computed tomography during arteriography. Arch Surg 1999; 134:1086-90. [PMID: 10522852 DOI: 10.1001/archsurg.134.10.1086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
HYPOTHESIS Blood supply to the peripancreatic region is derived from the celiac and superior mesenteric arteries, complementary to each other. DESIGN Cohort analytic study. SETTING Tertiary care public hospital. PATIENTS AND METHODS Computed tomography (CT) during superior mesenteric artery arteriography (SMAA-CT) and during celiac artery arteriography (CEAA-CT), in which a catheter tip was inserted into the common hepatic or gastroduodenal artery, was performed in 25 patients. MAIN OUTCOME MEASURE Distribution and correlation of these areas of marked enhancement on SMAA-CT and CEAA-CT were analyzed. RESULTS The right cephalic part of the pancreatic head that is derived from the dorsal bud was enhanced on CEAA-CT, and the left caudal part of the pancreatic head that is derived from the ventral bud was enhanced on SMAA-CT. Blood supply to the intrapancreatic bile duct, including the ampulla of Vater, is derived from the CEA. The boundary between the areas of the duodenum supplied from the CEA and SMA was in the second or third portion. CONCLUSION The pancreatic head can be separated into 2 segments by the arterial supply, and each segment may be removed separately.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
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Takayasu K, Yoshie K, Muramatsu Y, Iwata R, Nakanishi Y, Sakamoto M, Fukuda H, Satake M, Moriyama N, Makino Y. Haemodynamic changes in non-alcoholic (viral) liver cirrhosis studied by computed tomography (CT) arterial portography and CT arteriography. J Gastroenterol Hepatol 1999; 14:908-14. [PMID: 10535474 DOI: 10.1046/j.1440-1746.1999.01957.x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
AIMS To evaluate haemodynamic and vascular changes in non-alcoholic (viral) cirrhosis on conventional computed tomography (CT), CT arteriography (CTA) and CT arterial portography (CTAP), and to determine the cause of the observed reticular stain on angiography. METHODS Using surgically resected liver specimens from 31 patients with viral hepatitis associated hepatocellular carcinoma, images of conventional CT, CTA, CTAP and the sinusoidal phase of hepatic arteriography were retrospectively analysed and compared with pathology of the non-cancerous portion of the liver. RESULTS Computed tomography arteriography showed inhomogeneous enhancement (diffuse, low-density nodules) in a total of 16 samples (52%); in eight of 10 (80%) cirrhotic livers, three of six (50%) precirrhotic livers, five of 12 (42%) livers with chronic active hepatitis and none of three with no active liver disease. The frequency of inhomogeneous enhancement became significantly higher with increasing severity of parenchymal damage (P < 0.05). In contrast, conventional CT and CTAP showed homogeneous enhancement in all 31 (100%) patients. There was no correlation between inhomogeneous enhancement on CTA and reticular staining on sinusoidal-phase hepatic angiograms. Inhomogeneous enhancement was frequently seen in patients with hepatitis B surface antigen and/or anti-hepatitis C virus antibody compared with those without them (P < 0.05). CONCLUSION The CTA was much more sensitive in detecting haemodynamic changes in the cirrhotic liver than CTAP, conventional CT and sinusoidal-phased hepatic angiography. Further study is required to clarify the mechanism of inhomogeneous enhancement on CTA and homogeneous enhancement on CTAP seen in cirrhosis.
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MESH Headings
- Adult
- Aged
- Angiography, Digital Subtraction
- Carcinoma, Hepatocellular/diagnostic imaging
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/physiopathology
- Diagnosis, Differential
- Female
- Hemodynamics
- Hepatic Artery/diagnostic imaging
- Hepatitis, Viral, Human/diagnostic imaging
- Hepatitis, Viral, Human/pathology
- Hepatitis, Viral, Human/physiopathology
- Humans
- Liver Cirrhosis/diagnostic imaging
- Liver Cirrhosis/pathology
- Liver Cirrhosis/physiopathology
- Liver Neoplasms/diagnostic imaging
- Liver Neoplasms/pathology
- Liver Neoplasms/physiopathology
- Male
- Middle Aged
- Portography
- Retrospective Studies
- Statistics, Nonparametric
- Tomography, X-Ray Computed
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Affiliation(s)
- K Takayasu
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
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Kubota K, Tada M, Yamada S, Hori K, Saito S, Iwata R, Sato K, Fukuda H, Ido T. Comparison of the distribution of fluorine-18 fluoromisonidazole, deoxyglucose and methionine in tumour tissue. Eur J Nucl Med 1999; 26:750-7. [PMID: 10398823 DOI: 10.1007/s002590050446] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To evaluate the tumour imaging potential of fluorine-18 fluoromisonidazole (FMISO), we studied FMISO uptake in an experimental tumour model and examined the correlation between intratumoral distributions of FMISO, 14C-2-deoxyglucose (2DG) and 14C-methionine (Met). The study was performed using control rats with the AH109A tumour and rats with the same tumour under local hypoxia. Tumour uptake of FMISO was constant between 30 min and 2 h after injection, and the tumour to muscle ratio was 2 from 2 to 4 h. A tumour study with FMISO was scheduled at 2 h. Double-tracer autoradiography of the tumour demonstrated that in the areas of high FMISO uptake, there was low uptake of Met, while areas of low FMISO uptake showed high Met uptake. FMISO showed high grain density in the rim of the tumour surrounding the necrotic area. 2DG showed a more uniform distribution over the entire section of viable cells. The mean uptake of FMISO by hypoxic, radioresistant tumours was significantly higher than that by the control tumours (P<0.05), while both 2DG and Met uptake by the control tumours was higher than uptake by hypoxic tumours. When individual tumours were examined, the uptake of FMISO was inversely correlated with that of Met (r = -0.507, P<0.02), while 2DG showed almost uniform uptake with no significant correlation to FMISO. In conclusion, hypoxic and radioresistant tumours could be identified by increased FMISO uptake in our model, consistent with findings reported by others. We found a large overlap in the distribution of FMISO and 2DG within the tumour, but only a small overlap in the distribution of FMISO and Met. A combination of FMISO and other tracers in positron emission tomography or single-photon emission tomography studies might be more helpful than single-tracer studies in predicting the response of tumour tissues to radiotherapy.
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Affiliation(s)
- K Kubota
- Institute of Development Aging and Cancer, Tohoku University, Aobaku, Sendai, Japan
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40
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Yoshioka T, Fukuda H, Fujiwara T, Iwata R, Ido T, Murakawa Y, Gamo M, Ishioka C, Kanamaru R. FDG PET evaluation of residual masses and regrowth of abdominal lymph node metastases from colon cancer compared with CT during chemotherapy. Clin Nucl Med 1999; 24:261-3. [PMID: 10466523 DOI: 10.1097/00003072-199904000-00009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Fluorine-18-2-deoxy-2-fluoro-D-glucose (F-18 FDG) PET may be more suitable for follow-up after cancer treatment than other morphologic approaches, because it reflects tumor viability. A patient with abdominal lymph node metastases from colon cancer was followed by CT and F-18 FDG PET during chemotherapy. F-18 FDG PET tumor images changed in accordance with the clinical progress, whereas CT findings were relatively unchanged. This case clearly shows the utility of F-18 FDG PET for follow-up during cancer chemotherapy.
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Affiliation(s)
- T Yoshioka
- Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.
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Takayasu K, Muramatsu Y, Iwata R. Hepatic arterial supply from the cystic artery: findings on arteriography, CT arteriography, and CT during arterial portography. AJR Am J Roentgenol 1999; 172:659-60. [PMID: 10063855 DOI: 10.2214/ajr.172.3.10063855] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- K Takayasu
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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Okusaka T, Okada S, Ishii H, Ikeda M, Nakasuka H, Nagahama H, Iwata R, Furukawa H, Takayasu K, Nakanishi Y, Sakamoto M, Hirohashi S, Yoshimori M. Transarterial chemotherapy with zinostatin stimalamer for hepatocellular carcinoma. Oncology 1998; 55:276-83. [PMID: 9663415 DOI: 10.1159/000011863] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Zinostatin stimalamer (SMANCS) is a lipophilic intra-arterial chemotherapeutic agent for hepatocellular carcinoma (HCC). Thirty HCC patients underwent transcatheter arterial injection of 4 mg SMANCS-lipiodol emulsion. Their responses were evaluated by computed tomography 1 month after treatment. Complete response (CR) was defined as disappearance or 100% necrosis of all tumors. Partial response (PR) was defined as > or = 50% reduction and/or > or = 50% necrosis. We regarded the lipiodol accumulation in tumors as being necrotic. CR and PR were observed in 8 patients (27%) and 4 patients (13%), respectively, and the overall response rate (CR + PR/all patients) was 40% (12/30). Of 12 patients whose serum alpha-fetoprotein levels had been more than 200 ng/ml before treatment, 5 patients (42%) showed more than 50% reduction in this level within 1 month after treatment. Toxicity was quite acceptable, although grade 4 toxicity (WHO) was observed as liver dysfunction in 1 patient. Transarterial chemotherapy with SMANCS, which is well tolerated, appears to have moderate antitumor effect in patients with HCC.
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Affiliation(s)
- T Okusaka
- Department of Internal Medicine, National Cancer Center Hospital, Tokyo, Japan.
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Furukawa H, Kosuge T, Shimada K, Yamamoto J, Kanai Y, Mukai K, Iwata R, Ushio K. Small polypoid lesions of the gallbladder: differential diagnosis and surgical indications by helical computed tomography. Arch Surg 1998; 133:735-9. [PMID: 9688001 DOI: 10.1001/archsurg.133.7.735] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVES To demonstrate the helical computed tomographic (CT) features of small polypoid lesions of the gallbladder and to establish a clinical strategy based on CT findings for the treatment of such lesions. DESIGN Validation cohort study. SETTING Tertiary care public hospital. PATIENTS Thirty-one patients with polypoid lesions of the gallbladder (< or = 3 cm) underwent CT followed by resection. MAIN OUTCOME MEASURE The detectability of the lesions on both unenhanced and enhanced CT and the configuration of the lesions on enhanced CT were prospectively evaluated in comparison with the histopathological findings. RESULTS Unenhanced CT detected 14 (45%) of the 31 lesions, whereas enhanced CT detected all of the lesions. The detection rates of the neoplastic lesions (adenoma, adenocarcinoma, and metastatic tumor) and cholesterol polyps were 81% (13/16) and 7% (1/15), respectively (P<.001). Among the 20 lesions demonstrated as pedunculated, 6 (30%) were neoplastic, whereas 10 (91%) of the 11 lesions demonstrated as sessile were neoplastic (P<.001). When a lesion was demonstrated on unenhanced CT or its shape was sessile on enhanced CT, the case was diagnosed as a neoplastic lesion. The sensitivity, specificity, positive predictive value, negative predictive value, and overall accuracy of the CT diagnosis of the neoplastic lesions were 88% (14/16), 87% (13/15), 88% (14/16), 87% (13/15), and 87% (27/31), respectively. CONCLUSION Computed tomography can differentiate neoplastic and nonneoplastic small polypoid lesions of the gallbladder and reliably identify the presence of neoplastic lesions that should be resected.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan.
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Bogni A, Pascali C, Iwata R, Cavalleri A, de Sanctis V, Decise D, Cucchetti G, Crippa F, Chiesa C, Schiavini M, Schiavini M, Bombardieri E. [18F]FDG synthesis by Anatech RB-86 robotic system: Improvements and general considerations. J Radioanal Nucl Chem 1998. [DOI: 10.1007/bf02387445] [Citation(s) in RCA: 2] [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: 11/28/2022]
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Kawaguchi K, Koike S, Hirotani M, Fujihara M, Furuya T, Iwata R, Morimoto K. Biotransformation of digitoxigenin by cultured Strophanthus hybrid cells. Phytochemistry 1998; 47:1261-1265. [PMID: 9611827 DOI: 10.1016/s0031-9422(97)00748-6] [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] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Hybrid cells between Strophanthus gratus and S. amboensis were obtained by electrofusion and confirmed to be hybrids through isozyme and RFLP analyses. Because a new and hybrid compound, 17 beta H-periplogenin beta-D-glucoside, was isolated as a biotransformation product of digitoxigenin by the hybrid cells, isomerization of 17 beta-lactone ring on S. gratus and glucosylation on S. amboensis were demonstrated simultaneously as the biotransformation abilities in the hybrid cells. Moreover, the productivity of the hybrid compound was increased by raising the sucrose concentration.
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Affiliation(s)
- K Kawaguchi
- School of Pharmaceutical Sciences, Kitasato University, Kanagawa, Japan
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46
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Takayasu K, Iwata R, Furukawa T, Nakanishi Y, Sakamoto M. [Pathologic study of hepatocellular carcinoma treated by TAI and TAE with SMANCS]. Gan To Kagaku Ryoho 1998; 25 Suppl 1:70-2. [PMID: 9512691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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47
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Furukawa H, Kosuge T, Mukai K, Iwata R, Kanai Y, Shimada K, Yamamoto J, Ushio K. Helical computed tomography in the diagnosis of portal vein invasion by pancreatic head carcinoma: usefulness for selecting surgical procedures and predicting the outcome. Arch Surg 1998; 133:61-5. [PMID: 9438761 DOI: 10.1001/archsurg.133.1.61] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To evaluate the use of helical computed tomography (CT) in diagnosing portal vein (PV) invasion by pancreatic head carcinoma and its usefulness in predicting outcome. DESIGN Validation cohort study. SETTING Tertiary care public hospital. PATIENTS Twenty-seven patients with carcinoma involving the pancreatic head were preoperatively studied with helical CT. All patients underwent resection. MAIN OUTCOME MEASURE By quantifying the contact between the tumor and PV on helical CT, the relationship between them was classified into 1 of 4 types: type 1, visible fat layer between PV and the tumor; type 2, with the total PV circumference defined as 360 degrees, contact between the tumor and PV was considered to be 90 degrees or less; type 3, contact ranged between 91 degrees and 180 degrees; and type 4, contact greater than 180 degrees. Helical CT results were compared with intraoperative observation, histological findings of the resected specimen, and postoperative course. RESULTS When helical CT showed type 3 or 4, the case was diagnosed as positive for PV invasion. Sensitivity, specificity, and overall accuracy were 83%, 100%, and 89% when compared with the intraoperative assessment, and 92%, 79%, and 85% with the histological assessment, respectively. One- and 2-year survival rates were 86% and 69% for type 1, 100% and 75% for type 2, and 33% and 12% for type 3, respectively. The survival rates of patients with types 1 and 2 were significantly higher than that of those with type 3 (P<.05). All 3 patients with type 4 died within 9 months. CONCLUSIONS Helical CT facilitates detection of PV invasion by pancreatic head carcinoma. The extent of PV involvement reflected the outcome after pancreatectomy.
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Affiliation(s)
- H Furukawa
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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Ueda J, Takayasu K, Muramatsu Y, Iwata R, Kosuge T, Sakamoto M, Satake M. Pheochromocytoma growing exophytically from the right adrenal gland and invaginating into the liver. Jpn J Clin Oncol 1997; 27:346-9. [PMID: 9390215 DOI: 10.1093/jjco/27.5.346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
A 5-cm pheochromocytoma located in segment 7 of the liver was found incidentally in a 45-year-old man with mild diabetes mellitus and hypertension, and resected. The tumor was demonstrated by computed tomography and magnetic resonance imaging to have completely invaginated itself into the liver and to be receiving blood from a dilated right hepatic artery alone. Surgery revealed the hepatic mass to be tightly adherent to the right adrenal gland. The histopathologic diagnosis was pheochromocytoma growing exophytically from the right adrenal gland. There was no association with multiple endocrine neoplasia type 1 and type 2. A postoperative 131I metaiodobenzylguanidine scan revealed no accumulation, and the patient is currently doing well without recurrence or hypertension one year after the operation. A pheochromocytoma deeply invaginating into the liver should be considered in the differential diagnosis of primary hypervascular hepatic tumors.
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Affiliation(s)
- J Ueda
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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Muramatsu Y, Takayasu K, Furukawa Y, Miyakawa K, Iwata R, Ushio K, Yamamoto J, Nakanishi Y. Hepatic tumor invasion of bile ducts: wedge-shaped sign on MR images. Radiology 1997; 205:81-5. [PMID: 9314966 DOI: 10.1148/radiology.205.1.9314966] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE To clarify the diagnostic importance of wedge-shaped areas of increased signal intensity that surround liver tumors on T1-weighted magnetic resonance (MR) images. MATERIALS AND METHODS In five patients with hepatic tumors, T1-weighted MR images that demonstrated wedge-shaped areas of increased signal intensity in the liver were reviewed; findings were compared with those at surgical and histologic examinations. RESULTS MR images showed localized intrahepatic bile duct dilatation lateral (three patients) and medial (two patients) to liver tumors within the wedge-shaped areas. At histopathologic examination, intraductal tumor growth was seen in local bile ducts in the same areas in five patients, and lipofuscin deposits were seen in the cytoplasm of atrophic hepatocytes in three patients. CONCLUSION On T1-weighted images, wedge-shaped areas of increased signal intensity associated with liver tumors indicate intraductal tumor extension in intrahepatic bile ducts. T1 shortening is possibly caused by lipofuscin deposits in atrophic hepatocytes.
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Affiliation(s)
- Y Muramatsu
- Department of Diagnostic Radiology, National Cancer Center Hospital, Tokyo, Japan
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Orihara H, Ishii K, Iwata R, Fujiwara T, Itoh M. [Three-dimensional positron emission tomography imaging system and its application for medical use]. Nihon Rinsho 1997; 55:2148-2155. [PMID: 9284437] [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: 05/22/2023]
Abstract
Current positron emission tomography is capable for three dimensional data acquisition and reconstruction (3D PET). The main advantage of 3D PET is its detectability for lower tracer concentrations. The images by a 3D PET have better signal to noise ratios compared to those by conventional 2D PET. This point is especially important for the studies of distributions of ligands for neuroreceptors such as F-18 FDOPA and C-11 YM-01951, since these ligands show low accumulation in brain. Reduction of scanning time is useful as well for patients are permitting extended scanning periods
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Affiliation(s)
- H Orihara
- Cyclotron and Radioisotope Center, Tohoku University
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