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Hayashi K, Tanaka Y, Tsuda T, Nomura A, Fujino N, Furusho H, Sakai N, Iwata Y, Usui S, Sakata K, Kato T, Tada H, Kusayama T, Usuda K, Kawashiri MA, Passman RS, Wada T, Yamagishi M, Takamura M, Fujino N, Nohara A, Kawashiri MA, Hayashi K, Sakata K, Yoshimuta T, Konno T, Funada A, Tada H, Nakanishi C, Hodatsu A, Mori M, Tsuda T, Teramoto R, Nagata Y, Nomura A, Shimojima M, Yoshida S, Yoshida T, Hachiya S, Tamura Y, Kashihara Y, Kobayashi T, Shibayama J, Inaba S, Matsubara T, Yasuda T, Miwa K, Inoue M, Fujita T, Yakuta Y, Aburao T, Matsui T, Higashi K, Koga T, Hikishima K, Namura M, Horita Y, Ikeda M, Terai H, Gamou T, Tama N, Kimura R, Tsujimoto D, Nakahashi T, Ueda K, Ino H, Higashikata T, Kaneda T, Takata M, Yamamoto R, Yoshikawa T, Ohira M, Suematsu T, Tagawa S, Inoue T, Okada H, Kita Y, Fujita C, Ukawa N, Inoguchi Y, Ito Y, Araki T, Oe K, Minamoto M, Yokawa J, Tanaka Y, Mori K, Taguchi T, Kaku B, Katsuda S, Hirase H, Haraki T, Fujioka K, Terada K, Ichise T, Maekawa N, Higashi M, Okeie K, Kiyama M, Ota M, Todo Y, Aoyama T, Yamaguchi M, Noji Y, Mabuchi T, Yagi M, Niwa S, Takashima Y, Murai K, Nishikawa T, Mizuno S, Ohsato K, Misawa K, Kokado H, Michishita I, Iwaki T, Nozue T, Katoh H, Nakashima K, Ito S, Yamagishi M. Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroshi Furusho
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Cardiology, Ishikawa Prefectural Central Hospital, 2-1, Kuratsuki-higashi, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Rod S Passman
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Masakazu Yamagishi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Osaka University of Human Sciences, Settsu, Osaka, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Kohagura J, Tokuzawa T, Yoshikawa M, Shima Y, Nakanishi H, Nakashima Y, Sakamoto M, Katoh H. Ku-band multichannel frequency comb Doppler reflectometer on the GAMMA 10/potential control and divertor simulating experiment (PDX) tandem mirror. Rev Sci Instrum 2022; 93:123507. [PMID: 36586932 DOI: 10.1063/5.0101893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A Ku-band (12-18 GHz) multichannel Doppler reflectometer (DR) has been developed in the GAMMA 10/potential control and divertor simulating experiment (PDX) tandem mirror device to improve the applicability of DR measurement for simultaneous monitoring of velocity of electron density turbulence at different locations. Our previous single-channel DR circuit has been replaced by the multichannel microwave system using a nonlinear transmission line based comb generator with heterodyne technique. The multichannel DR system has been installed in the central cell of GAMMA 10/PDX. Initial results of application to GAMMA 10/PDX plasma are presented, showing Doppler frequency shifts during an additional ion cyclotron resonance frequency heating and gas-puffing experiment.
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Affiliation(s)
- J Kohagura
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - T Tokuzawa
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M Yoshikawa
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y Shima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H Nakanishi
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - Y Nakashima
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - M Sakamoto
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - H Katoh
- Plasma Research Center, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
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Akiyama Y, Maeda D, Katoh H, Kume H, Homma Y. Are glomerulations still a characteristic marker for interstitial cystitis/bladder pain syndrome? Biological evidences from global gene expression and comprehensive immunohistochemical quantification analyses. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32892-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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4
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Camba SI, Del Valle FP, Shirota K, Sasai K, Katoh H. Evaluation of 3-week-old layer chicks intratracheally challenged with Salmonella isolates from serogroup c1 (O:6,7) and Salmonella Enteritidis. Avian Pathol 2020; 49:305-310. [PMID: 31965821 DOI: 10.1080/03079457.2020.1719280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
With the exception to Salmonella enterica serotype Typhimurium and S. Enteritidis (serogroups B [O:4] and D [O:9], respectively), there have been very few studies conducted on the respiratory tract as route of infection in chickens with salmonellas from serogroup C1 (O:6,7). Therefore, the purpose of this present study was to determine the potential organ invasion by Salmonella enterica serotype Potsdam (SP), S. Mbandaka (SM), and S. Infantis (SI) from serogroup C1 (O:6,7) and compare their characteristics with those of S. Enteritidis (SE) on intratracheally (IT) challenged 3-week-old layer chicks. A total of 360 one-day-old White Leghorn layer chicks were acquired from a commercial hatchery and randomly assigned into four treatment groups (SP, SM, SI, and SE, respectively), consisting of three independent trials. Chicks were grown up to 21 days (3 weeks) and IT-challenged thereafter with 106 CFU of respective salmonella organisms per group (n = 30). Chicks (n = 5) were humanely sacrificed every 24 h for 6 days post-IT infection and organs such as lung, heart, liver, spleen, kidney and caecal content were cultured for salmonella. All treatment groups exhibited colonization of lungs and caecal contents at 1 d (P = 0.475) and 4 d (P = 0.696) post-IT infection, respectively. There was no isolation of SP, SM, and SI in heart, liver, spleen, and kidney. In contrast, SE was obtained from heart, liver, and spleen of IT-infected chicks. The findings of this study contribute to a better understanding of the importance of the respiratory route in salmonella infection in poultry.
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Affiliation(s)
- S I Camba
- Department of Veterinary Clinical Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Poultry Products Quality Control Co. (PPQC Co. Ltd), NIhonmatsu, Fukushima, Japan
| | - F P Del Valle
- Department of Veterinary Clinical Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Poultry Products Quality Control Co. (PPQC Co. Ltd), NIhonmatsu, Fukushima, Japan
| | - K Shirota
- Poultry Products Quality Control Co. (PPQC Co. Ltd), NIhonmatsu, Fukushima, Japan
| | - K Sasai
- Department of Veterinary Clinical Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - H Katoh
- Department of Veterinary Clinical Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Poultry Products Quality Control Co. (PPQC Co. Ltd), NIhonmatsu, Fukushima, Japan
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Mori Y, Okamoto M, Kiyohara H, Katoh H, Shibuya K, Kaminuma T, Shiba S, Okano N, Ohno T, Nakano T. EP-1418 Initial results of carbon ion radiotherapy combined with S-1 for locally advanced pancreatic cancer. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31838-9] [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: 11/17/2022]
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6
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Umali DV, Shirota K, Sasai K, Katoh H. Characterization of Ornithobacterium rhinotracheale from commercial layer chickens in eastern Japan. Poult Sci 2018; 97:24-29. [PMID: 29077917 DOI: 10.3382/ps/pex254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 09/08/2017] [Indexed: 11/20/2022] Open
Abstract
From a total of 72 commercial layer and pullet farms that were monitored in the eastern Japan area, 4 farms had mild to severe respiratory disease accompanied by decreased feed intake and drop in egg production. Microbiological analysis showed that 3 of the 4 farms, particularly from Fukushima, Tochigi, and Ibaraki prefectures, were positive for Ornithobacterum rhinotracheale (ORT). Out of 65 birds examined, ORT was isolated in 21 birds (32.31%). All isolates were Gram-negative pleomorphic rods with a colony size of 0.05 mm, translucent with grayish coloration, and with butyric smell after 48 h of incubation in 10% chicken blood agar at 37°C under microaerophilic conditions. All isolates reacted positively in the p-nitrophenyl-β-d-galactopyranoside test within 3 h and were positive in cytochrome oxidase tests with an API 20NE identification system biocode of 0-0-2-0-0-0-4. An agar gel precipitation test showed that all isolates were serotype-A. All strains were positive in PCR by yielding a 784 bp amplicon of the 16S rRNA gene. All strains were resistant to amikacin, colistin, gentamicin, kanamycin, neomycin, polymyxin b, streptomycin, and sulfamethoxazole trimethoprim and susceptible to amoxicillin clavulanic acid, ampicillin, doxycycline, spectinomycin, and tetracycline. This study is the first characterization of ORT from commercial layer chickens in eastern Japan.
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Affiliation(s)
- D V Umali
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of the Philippines, Los Baños, College, Laguna, 4031 Philippines.,Poultry Products Quality Control, Ltd. 125-7 Daiwa Dakeonsen, Nihonmatsu-shi, Fukushima-Prefecture, Japan.,Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531 Japan
| | - K Shirota
- Poultry Products Quality Control, Ltd. 125-7 Daiwa Dakeonsen, Nihonmatsu-shi, Fukushima-Prefecture, Japan
| | - K Sasai
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531 Japan
| | - H Katoh
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of the Philippines, Los Baños, College, Laguna, 4031 Philippines.,Poultry Products Quality Control, Ltd. 125-7 Daiwa Dakeonsen, Nihonmatsu-shi, Fukushima-Prefecture, Japan.,Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-58 Rinku-oraikita, Izumisano, Osaka 598-8531 Japan
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Matsuda N, Odawara A, Katoh H, Okuyama N, Yokoi R, Suzuki I. Detection of synchronized burst firing in cultured human induced pluripotent stem cell-derived neurons using a 4-step method. Biochem Biophys Res Commun 2018; 497:612-618. [PMID: 29454965 DOI: 10.1016/j.bbrc.2018.02.117] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 02/13/2018] [Indexed: 01/28/2023]
Abstract
Human induced pluripotent stem cell-derived neurons are promising for use in toxicity evaluations in nonclinical studies. The multi-electrode array (MEA) assay is used in such evaluation systems because it can measure the electrophysiological function of a neural network noninvasively and with high throughput. Synchronized burst firing (SBF) is the main analytic parameter of pharmacological effects in MEA data, but an accurate method for detecting SBFs has not been established. In this study, we present a 4-step method that accurately detects a target SBF confirmed by the researcher's interpretation of a raster plot. This method calculates one set parameter per step, in the following order: the inter-spike interval (ISI), the number of spikes in an SBF, the inter-SBF interval, and the number of spikes in an SBF again. We found that the 4-step method is advantageous over the conventional method because it determines the preferable duration of an SBF, accurately distinguishes continuous SBFs, detects weak SBFs, and avoids false detection of SBFs. We found also that pharmacological evaluations involving SBF analysis may differ depending on whether the 4-step or conventional threshold method is used. This 4-step method may contribute to improving the accuracy of drug toxicity and efficacy evaluations using human induced pluripotent stem cell-derived neurons.
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Affiliation(s)
- N Matsuda
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - A Odawara
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan; Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 982-8577, Japan; Japan Society for the Promotion of Science, Japan
| | - H Katoh
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - N Okuyama
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - R Yokoi
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - I Suzuki
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan; iPS-non Clinical Experiments for Nervous System (iNCENS) Project, Japan; Consortium for Safety Assessment Using Human iPS Cells (CSAHi), Japan.
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Chijiwa T, Komura D, Haraguchi M, Noguchi A, Sato H, Ito H, Nakayama H, Katayama M, Miyao N, Suemizu H, Nakamura Y, Furukawa D, Moriya T, Isagawa T, Katoh H, Ishikawa S, Nakamura M, Miyagi Y. The possibility of personalized chemotherapy for non-small cell lung cancer using interactome analyses of PDX/NOG models. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx671.037] [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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Otsuka M, Suzuki T, Tagawa A, Ogawa T, Hashimoto R, Katoh H. Alzheimer's desease and insulin resistance. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Satoh T, Katoh H, Saotome M, Nonaka D, Sakamoto A, Hasan P, Satoh H, Hayashi H. P5382Intracellular renin inhibits mitochondrial permeability transition pore via an activated mitochondrial ERK1/2 during ischemia in diabetic hearts. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5382] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Shimada T, Kadota K, Miura K, Ohya M, Amano H, Kubo S, Otsuru S, Habara S, Tada T, Tanaka H, Fuku Y, Katoh H, Goto T. P525Midterm angiographic outcomes after drug-eluting stent implantation following rotational atherectomy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p525] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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12
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Katoh H, Nozue T, Horie K, Sozu T, Inoue N, Michishita I. P4288RenalGuard system to prevent Contrast-induced acute kidney Injury in Japan; RESPECT KIDNEY Study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4288] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Katoh H, Yamane M, Muramatsu T, Okamura A, Kashima Y, Matsuno S, Sakurada M, Kijima M, Tanabe M, Habara M. P4222Examination of chronic total occlusion cases who were switched to antegrade approach after failure of retrograde procedure from the Japanese Retrograde Summit Registry. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4222] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Yokoi K, Yamashita K, Ishii S, Tanaka T, Nishizawa N, Tsutsui A, Miura H, Katoh H, Yamanashi T, Naito M, Sato T, Nakamura T, Watanabe M. Comprehensive molecular exploration identified promoter DNA methylation of the CRBP1 gene as a determinant of radiation sensitivity in rectal cancer. Br J Cancer 2017; 116:1046-1056. [PMID: 28291773 PMCID: PMC5396119 DOI: 10.1038/bjc.2017.65] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/14/2017] [Accepted: 02/20/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Neoadjuvant chemoradiotherapy (NCRT) for advanced rectal cancer (RC) is a well-evidenced therapy; however, some RC patients have no therapeutic response. Patient selection for NCRT so that non-responsive patients are excluded has been subjective. To date, no molecular markers indicating radiation sensitivity have been reported. METHODS We irradiated six colorectal cancer (CRC) cell lines and identified HCT116 cells as radiation-sensitive and HCT15 and DLD-1 cells as radiation resistant. Using a microarray, we selected candidate radiation sensitivity marker genes by choosing genes whose expression was consistent with a radiation-resistant or sensitive cell phenotype. RESULTS Among candidate genes, cellular retinol binding protein 1 (CRBP1) was of particular interest because it was not only induced in HCT116 cells by tentative 10 Gy radiation treatments, but also its expression was increased in HCT116-derived radiation-resistant cells vs parental cells. Forced expression of CRBP1 decreased the viability of both HCT15 and DLD-1 cells in response to radiation therapy. We also confirmed that CRBP1 was epigenetically silenced by hypermethylation of its promoter DNA, and that the quantitative methylation value of CRBP1 significantly correlated with histological response in RC patients with NCRT (P=0.031). CONCLUSIONS Our study identified CRBP1 as a radiation-sensitive predictor in RC.
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Affiliation(s)
- K Yokoi
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - K Yamashita
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - S Ishii
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - T Tanaka
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - N Nishizawa
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - A Tsutsui
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - H Miura
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - H Katoh
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - T Yamanashi
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - M Naito
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - T Sato
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - T Nakamura
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
| | - M Watanabe
- Department of Surgery, Kitasato University School of Medicine, Kitasato, 1-15-1, Minami-ku, Sagamihara, Kanagawa 252-0374, Japan
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Kojima K, Yamashita K, Ushiku H, Katoh H, Ishii S, Tanaka T, Yokoi K, Suzuki M, Ooizumi Y, Igarashi K, Hosoda K, Moriya H, Mieno H, Katada N, Tanabe S, Watanabe M. The clinical significance of cysteine dioxygenase type 1 methylation in Barrett esophagus adenocarcinoma. Dis Esophagus 2017; 30:1-9. [PMID: 28184414 DOI: 10.1093/dote/dow001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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: 12/11/2022]
Abstract
Methylation of cysteine dioxygenase type 1 (CDO1) gene, a tumor suppressor gene, has been studied in various cancers; however, there is no information regarding Barrett esophagus cancer. In this study, the clinical significance of CDO1 methylation in Barrett esophagus adenocarcinoma (BEA) was clarified. CDO1 gene promoter methylation was analyzed for DNA from the patient's specimens using quantitative methylation-specific polymerase chain reaction. Thirty-eight BEA patients who underwent resection were identified between 2000 and 2014. Hypermethylation of CDO1 gene was demonstrated to be frequently recognized even at early stage in BEA by quantitative methylation-specific polymerase chain reaction. In BEA, there is a robust prognostic difference between stage I and stage II/III/IV with regard to 5-year relapse-free survival (P = 0.0016) and 5-year overall survival (P = 0.0024), and the tumor size separated by 7 cm was also a prognostic factor. There was significant difference in CDO1 gene methylation according to the tumor size (P = 0.036). BEA patients with CDO1 gene methylation were shown marginally significantly poorer prognosis (P = 0.054) than otherwise patients. In conclusion, higher CDO1 gene methylation was seen in BEA at earlier stage than in squamous cell carcinoma, and it may account for aggressive phenotype of BEA.
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Affiliation(s)
- K Kojima
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - K Yamashita
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - H Ushiku
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - H Katoh
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - S Ishii
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - T Tanaka
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - K Yokoi
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - M Suzuki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Y Ooizumi
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - K Igarashi
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - K Hosoda
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - H Moriya
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - H Mieno
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - N Katada
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
| | - S Tanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - M Watanabe
- Department of Surgery, Kitasato University School of Medicine, Sagamihara, Japan
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Ishii S, Yamashita K, Tanaka T, Nishizawa N, Yokoi K, Katoh H, Watanabe M. 254P Elucidation of the mechanism of high-lymph node metastasis density in gastric cancer-H19-PEG10 axis. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw582.035] [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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17
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Ishii S, Yamashita K, Tanaka T, Nishizawa N, Yokoi K, Katoh H, Watanabe M. 254P Elucidation of the mechanism of high-lymph node metastasis density in gastric cancer-H19-PEG10 axis. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00411-7] [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: 10/22/2022] Open
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18
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Tanaka T, Yamashita K, Ishii S, Nishizawa N, Yokoi K, Katoh H, Watanabe M. 206P Comprehensive genomic research to clarify the mechanism of drug resistance in colon cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Odawara A, Katoh H, Matsuda N, Suzuki I. Induction of long-term potentiation and depression phenomena in human induced pluripotent stem cell-derived cortical neurons. Biochem Biophys Res Commun 2015; 469:856-62. [PMID: 26718408 DOI: 10.1016/j.bbrc.2015.12.087] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 12/20/2015] [Indexed: 11/18/2022]
Abstract
Plasticity such as long-term potentiation (LTP) and long-term potentiation depression (LTD) in neuronal networks has been analyzed using in vitro and in vivo techniques in simple animals to understand learning, memory, and development in brain function. Human induced pluripotent stem cell (hiPSC)-derived neurons may be effectively used for understanding the plasticity mechanism in human neuronal networks, thereby elucidating disease mechanisms and drug discoveries. In this study, we attempted the induction of LTP and LTD phenomena in a cultured hiPSC-derived cerebral cortical neuronal network using multi-electrode array (MEA) systems. High-frequency stimulation (HFS) produced a potentiated and depressed transmission in a neuronal circuit for 1 h in the evoked responses by test stimulus. The cross-correlation of responses revealed that spike patterns with specific timing were generated during LTP induction and disappeared during LTD induction and that the hiPSC-derived cortical neuronal network has the potential to repeatedly express the spike pattern with a precise timing change within 0.5 ms. We also detected the phenomenon for late-phase LTP (L-LTP) like plasticity and the effects for synchronized burst firing (SBF) in spontaneous firings by HFS. In conclusion, we detected the LTP and LTD phenomena in a hiPSC-derived neuronal network as the change of spike pattern. The studies of plasticity using hiPSC-derived neurons and a MEA system may be beneficial for clarifying the functions of human neuronal circuits and for applying to drug screening.
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Affiliation(s)
- A Odawara
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi 192-0982, Japan; Japan Society for the Promotion of Science, Japan
| | - H Katoh
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi 192-0982, Japan
| | - N Matsuda
- Department of Electronics and Intelligent Systems, Faculty of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi 982-8577, Japan
| | - I Suzuki
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi 192-0982, Japan; Department of Electronics and Intelligent Systems, Faculty of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi 982-8577, Japan.
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Hashimoto T, Demizu Y, Isobe T, Numajiri H, Fukuda S, Wakatsuki M, Yamashita H, Murayama S, Takamatsu S, Katoh H, Murata K, Kohno R, Arimura T, Matsuura T, Ito Y. Particle Therapy Using Protons or Carbon Ions for Cancer Patients With Cardiac Implantable Electronic Devices (CIEDs): A Retrospective Japan Radiological Society Multi-institutional Study. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1990] [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: 11/27/2022]
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21
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Maebayashi T, Ishikawa H, Yorozu A, Yoshida D, Katoh H, Nemoto K, Ishihara S, Takemoto S, Ishibashi N, Tokumaru S, Akimoto T. Patterns of Practice in the Radiation Therapy for Bladder Cancer: Survey of the Japanese Radiation Oncology Study Group (JROSG). Jpn J Clin Oncol 2014; 44:1109-15. [DOI: 10.1093/jjco/hyu129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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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22
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Nonaka D, Katoh H, Kumazawa A, Saotome M, Urushida T, Satoh H, Hayashi H. Non-secretory renin prevents ischemic injury by modulating mitochondrial function in diabetic heart. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3281] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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24
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Kubo S, Kadota K, Habara S, Tada T, Tanaka H, Fuku Y, Katoh H, Goto T, Mitsudo K. Efficacy of thrombus aspiration during percutaneous coronary intervention for stent thrombosis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.108] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Katoh H, Kadota K, Hasegawa D, Shigemoto Y, Habara S, Tada T, Tanaka H, Fuku Y, Goto T, Mitsudo K. Impact of polyvascular disease and chronic kidney disease on long-term cardiovascular outcomes after sirolimus-eluting stent implantation. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4787] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Kubo S, Kadota K, Habara S, Tada T, Tanaka H, Fuku Y, Katoh H, Goto T, Mitsudo K. Optimal treatment of paclitaxel-eluting balloon failure for in-stent restenosis lesion. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1240] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Sano M, Satoh H, Suwa K, Nobuhara M, Saitoh T, Saotome M, Urushida T, Katoh H, Hayashi H. Cardiac involvement in systemic sclerosis and the value of Late Gadolinium Enhancement (LGE) in Cardiac Magnetic Resonance (CMR). Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2999] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Saitoh T, Suwa K, Takehara Y, Sano M, Nobuhara M, Saotome M, Urushida T, Katoh H, Satoh H, Hayashi H. Analyses of intra-left atrial vortex and flow dynamics from pulmonary veins to left ventricle using phase-resolved three-dimensional cine contrast Magnetic Resonance Imaging (4D-Flow MRI). Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2938] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Watanabe M, Fukazawa R, Hamaoka K, Saji T, Katoh H, Suzuki H, Tsuda E, Ayusawa M, Miura M, Ogawa S. Estimation of the thrombosis formation and its thrombolytic therapy in Kawasaki disease patient with giant coronary artery aneurysm during a 10-year period by the nationwide survey. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2283] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Suwa K, Satoh H, Sano M, Saotome M, Katoh H, Wakabayashi Y, Tawarahara K, Takase H, Terada H, Hayashi H. Functional, morphologic and electrocardiographic abnormalities in patients with apical hypertrophic cardiomyopathy and apical aneurysm: estimation with cardiac magnetic resonance. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2998] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Kubo S, Kadota K, Habara S, Tada T, Tanaka H, Fuku Y, Katoh H, Goto T, Mitsudo K. Impact of early target lesion revascularization on long-term clinical outcomes after sirolimus-eluting stent implantation. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4817] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Dillamore IL, Katoh H. The Mechanisms of Recrystallization in Cubic Metals with Particular Reference to Their Orientation-Dependence. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/msc.1974.8.1.73] [Citation(s) in RCA: 274] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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34
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Katoh H, Inoue H, Kuchiki F, Ide Y, Uechi N, Iwanami T. Identification of a distinct lineage of Cacopsylla chinensis (Hemiptera: Psyllidae) in Japan on the basis of two mitochondrial DNA sequences. J Econ Entomol 2013; 106:536-542. [PMID: 23786037 DOI: 10.1603/ec12209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Psyllids are a menacing pests of pears (Pyrus spp.) grown in temperate and subtropical regions of the world, including Taiwan and China. Pear psyllids belong to the large genus Cacopsylla (Psyllidae: Psyllinae). Among the 28 psyllid species that infest pear trees, Cacopsylla chinensis (Yang and Li, 1981) is considered the most harmful. Two psyllid outbreaks involving exotic species affected Japanese pear (Pyrus pyrifolia variety culta) orchards in the Saga Prefecture in July and November 2011. The psyllids were morphologically identical to the summer and winter forms of C. chinensis. In this study, we performed DNA sequence analysis of the mitochondrial cytochrome oxidase I-leucine tRNA-cytochrome oxidase II (COI-tRNA(Leu)-COII) and 16S rDNA regions to elucidate the phylogenetic relationships among 82 summer-form psyllids, five winter-form psyllids from several orchards in Japan, and those reported from Taiwan and China. The sequences of the COI-tRNA(LEU)-COII and 16S rDNA regions were identical among all 87 psyllids from Japan, regardless of summer/winter forms or orchards in Saga, Japan. Comparison of nucleotide sequences and phylogenetic analysis differentiated Japanese psyllids from the Taiwanese and Chinese C. chinensis isolates, with approximately 8 and 7% nucleotide difference in the COI-tRNA(LEU)-COII and 16S rDNA regions, respectively. The results suggest that C. chinensis possess a high level of genetic variability and that the psyllids responsible for the outbreak in Saga, Japan belong to a distinct lineage of C. chinensis.
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Affiliation(s)
- H Katoh
- NARO Institute of Fruit Tree Science, Fujimoto 2-1, Tsukuba, Ibaraki 305-8605, Japan
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35
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Kaminuma T, Katoh H, Ishikawa H, Tamaki T, Shirai K, Matsui H, Itoh K, Ohno T, Suzuki K, Nakano T. Comparison of the Objective and Subjective Assessments of Urinary Condition in Hypofractionated Carbon-ion Radiation Therapy for Localized Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Saitoh J, Shirai K, Ohno T, Yoshimoto Y, Musya A, Katoh H, Noda S, Tamaki T, Suzuki Y, Nakano T. Changes of the Range of Carbon Ion Beam During the Course of Radiation Therapy for the Treatment of Nasal and Paranasal Mucosal Malignant Melanoma. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Murata K, Katoh H, Ishikawa H, Kaminuma T, Ebara T, Miyakubo M, Matsui H, Itoh K, Suzuki K, Nakano T. PO-206 ACUTE TOXICITY OF SINGLE FRACTION BOOST WITH HDR BT AFTER HYPOFRACTIONATED EBRT FOR LOCALLY ADVANCED PROSTATE CANCER. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)72172-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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38
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Nomura M, Fukuda T, Nagase K, Tojo H, Nagao T, Gotoh N, Ohira T, Katoh H, Ikeda N, Nishimura T. PP 70 Stathmin1 - drug sensitivity associated protein of lung cancer. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72688-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Ishikawa H, Noda S, Tamaki T, Nonaka T, Ebara T, Katoh H, Kaminuma T, Sato T, Takahashi T, Nakano T. High-dose-rate Intraluminal Brachytherapy Combined with External Beam Radiation Therapy for Medically Inoperable Patients with Stage I Thoracic Esophageal Cancer. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Himawan R, Katoh H, Cahyono A. Monitoring Low-Cycle Fatigue Material-Degradation by Ultrasonic Methods. Atom Indo 2011. [DOI: 10.17146/aij.2010.26] [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] Open
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41
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Ishikawa H, Katoh H, Ebara T, Ando K, Yoshimoto Y, Kawamura H, Okamoto M, Akimoto T, Takahashi T, Nakano T. High-dose-rate Brachytherapy Combined with Hypofractionated External Beam Radiotherapy for Locally Advanced Prostate Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Katoh H, Yamashita K, Sato T, Ozawa H, Nakamura T, Watanabe M. Prognostic significance of peritoneal tumour cells identified at surgery for colorectal cancer. Br J Surg 2009; 96:769-77. [PMID: 19526618 DOI: 10.1002/bjs.6622] [Citation(s) in RCA: 27] [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: 11/08/2022]
Abstract
BACKGROUND The prognostic significance of intraperitoneal tumour cells (IPCs) in colorectal cancer is not clear. This study aimed to determine whether detection of IPCs could be used a prognostic marker for selecting patients at high risk of recurrence. METHODS The study included 226 patients with colorectal cancer who underwent elective resection. Clinical variables, including the presence of IPCs, were analysed for their prognostic significance. RESULTS Thirty-three patients (14.6 per cent) were positive for IPCs. Univariable analysis indicated that the presence of IPCs was a significant prognostic factor in patients with stage III colorectal cancer; the 5-year disease-specific survival rate was 14 per cent in IPC-positive patients versus 79 per cent in those without IPCs (P < 0.001). Multivariable analysis showed that IPC positivity was the most robust prognostic factor in stage III disease (hazard ratio 2.2; P = 0.003), whereas nodal category (N1 or N2) showed no significant association with prognosis. In addition, IPCs were associated with haematogenous recurrence (P = 0.004) rather than peritoneal or local recurrence (P = 0.077) in patients with stage III disease. CONCLUSION The presence of IPCs is a significant prognostic factor in patients with stage III colorectal cancer.
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Affiliation(s)
- H Katoh
- Department of Surgery, Kitasato University Hospital, Kitasato 1-15-1, Sagamihara 228-8555, Kanagawa, Japan
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Tsukada K, Katoh H, Shiojima M, Suzuki T, Takenoshita S, Nagamachi Y. Increased plasma endothelin-1 concentrations in E. coli septic peritonitis rats with diabetes mellitus. Exp Clin Endocrinol 2009; 101:315-8. [PMID: 8299709 DOI: 10.1055/s-0029-1211251] [Citation(s) in RCA: 3] [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: 01/29/2023]
Abstract
To study the diabetic mellitus (DM) patient's reaction to sepsis, we investigated the survival rate, the bacteremia, plasma endotoxin and plasma endothelin-1 levels in E. coli septic peritonitis rats with or without streptozotocin-induced DM. No significant difference could be detected between the DM and nondiabetic rats in the survival rate, the bacteremia level or the plasma endotoxin level. The DM rat manifested a significant increase compared to the nondiabetic rat in the plasma endothelin-1 level four hours after the outbreak of peritonitis. Endothelin-1 may thus play some role in the E. coli septic peritonitis rat with DM.
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Affiliation(s)
- K Tsukada
- First Department of Surgery, Gunma University, School of Medicine, Maebashi, Japan
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Tokumura M, Katoh H, Katoh T, Znad HT, Kawase Y. Solubilization of excess sludge in activated sludge process using the solar photo-Fenton reaction. J Hazard Mater 2009; 162:1390-1396. [PMID: 18639985 DOI: 10.1016/j.jhazmat.2008.06.026] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 03/26/2008] [Revised: 06/03/2008] [Accepted: 06/06/2008] [Indexed: 05/26/2023]
Abstract
The solubilization of excess sludge by the solar photo-Fenton reaction has been investigated for the reduction of excess sludge in the activated sludge process. The solubilization kinetics depended on the dosages of the Fenton reagents, Fe and H(2)O(2). Increases of initial Fe and H(2)O(2) concentrations in their ranges studied in this work continuously enhanced the sludge solubilization. Cell lysis by the photo-Fenton reaction caused the increase in dissolved chemical oxygen demand (COD) in the first step of sludge solubilization. The further oxidative decomposition of the discharged organic compounds by the photo-Fenton reaction led to the decrease in the dissolved COD as the second step of sludge solubilization. The increase of dissolved COD in the first step of sludge solubilization and the consumption of H(2)O(2) could be described by the pseudo-zero order kinetics based on the accumulated light energy. About 40% reduction of mixed-liquor suspended solids (MLSS) by the solar photo-Fenton reaction was found. It was found that solar light used as a light energy source instead of costly and hazardous artificial UV light was very effective. The dissolved COD for solar photo-Fenton reaction increased faster and by 1.5 times as compared with that by artificial UV light.
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Affiliation(s)
- M Tokumura
- Research Center for Biochemical and Environmental Engineering, Department of Applied Chemistry, Toyo University, Kawagoe, Saitama 350-8585, Japan
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Tsukada K, Azuhata H, Katoh H, Kuwano H. Acute gastroduodenal injury after ingestion of diluted herbicide pendimethalin. Singapore Med J 2009; 50:e105-e106. [PMID: 19352552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The herbicide, pendimethalin, is used worldwide, but its acute toxicity is not yet widely known. There have been some reported acute pendimethalin poisoning cases in humans and most of them intentionally ingested the concentrated formulation. We describe a 73-year-old man who developed corrosive gastroduodenal injury after accidental ingestion of the diluted (300 times with water) pendimethalin formulation. He had a history of reflux oesophagitis and had been taking omeprazol (10 mg/day) for a year. He consumed alcohol two hours after the accidental ingestion and then had nausea and epigastric pain. Endoscopy performed three days post-exposure revealed gastroduodenal injury. As he had consumed alcohol every day for years and had no history of gastroduodenal ulcer, the accidental ingestion may be associated with this injury. He was successfully treated by increasing his dosage of omeprazol (20 mg/day) for two weeks. This case indicates that ingestion of a small quantity of pendimethalin can provoke gastroduodenal injury.
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Affiliation(s)
- K Tsukada
- Kawanishi Red Cross Hospital, Mochizuki 318, Saku, Nagano 384-2292, Japan.
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Hasuike N, Nishio K, Katoh H, Suzuki A, Isshiki T, Kisoda K, Harima H. Structural and electronic properties of ZnO polycrystals doped with Co. J Phys Condens Matter 2009; 21:064215. [PMID: 21715917 DOI: 10.1088/0953-8984/21/6/064215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Zn(1-x)Co(x)O samples were prepared by a standard solid-state reaction method. Zn(1-x)Co(x)O crystals in the wurtzite structure were obtained with a Co composition of up to 22.1%. The a- and c-axis lengths increased and decreased, respectively, with an increase in Co composition. Raman spectra showed systematic broadening of the E(2) (high) phonon mode associated with the increase in Co composition, and electronic transitions of Co in the oxygen tetrahedron were observed in optical absorption measurement. These results indicated systematic substitution of Co into the Zn sites. Furthermore, an additional broad absorption band at 2.4-3.3 eV corresponding to the charge transfer (CT) process [Formula: see text] was also observed. The Raman spectra showed strong enhancement of the LO phonon due to a resonant Raman process induced with the coupling of the LO phonon and a photo-excited carriers mediated CT gap. These results suggest the possibility of carrier-induced ferromagnetism based on double exchange interaction in Zn(1-x)Co(x)O by visible light irradiation.
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Affiliation(s)
- N Hasuike
- Department of Electronics, Kyoto Institute of Technology, Kyoto 606-8585, Japan
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Noda S, Suzuki Y, Hoshino Y, Furukawa S, Katoh H, Kurotaki K, Nakano T. Clinical application of the Fricke-glucomannan gel dosimeter for high-dose-rate (192)Ir brachytherapy. Phys Med Biol 2008; 53:3985-93. [PMID: 18596369 DOI: 10.1088/0031-9155/53/14/016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study investigates the efficacy of a new Fricke dosimeter formulation consisting of a standard Fricke gel dosimeter gelled with glucomannan (FrGDG). FrGDG was irradiated using a (192)Ir gamma-ray source with a remote afterloading system based on computed tomography images. (60)Co irradiation was performed for measuring the absorption of FrGDG and water. The distribution maps of T2 values from the irradiated containers were obtained by MR imaging and converted to the absorbed dose to visualize the dose distribution. We found that FrGDG was produced easily and quickly at room temperature. R2 (1/T2) values were reproducible and linearly correlated with the absorbed doses in the range from 0 to 30 Gy for irradiation with (192)Ir (the correlation coefficient was 0.99). The mean deviation between the doses obtained from the MR images of the FrGDG and those calculated by the treatment planning system for doses of 37.5, 40, 50, 62.5 and 75 Gy was 4.9%, 4.8%, 3.5%, 2.3% and 2.4%, respectively. In conclusion, MR imaging of FrGDG can visualize the dose distribution successfully, and thus serves as a useful quality assurance tool for complicated three-dimensional radiotherapy treatments.
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Affiliation(s)
- S Noda
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22, Showa-machi, Maebashi, Gunma 371-8511, Japan
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Matsuyama H, Katoh H, Ohkushi T, Satoh A, Kawahara K, Yumoto I. Sphingobacterium kitahiroshimense sp. nov., isolated from soil. Int J Syst Evol Microbiol 2008; 58:1576-9. [DOI: 10.1099/ijs.0.65791-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Katoh H, Ishikawa H, Hasegawa M, Yoshida Y, Suzuki Y, Sakurai H, Nakano T. Prevention of Radiation-Induced Lung Injury in Mice by Ulinastatin. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.1953] [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: 10/22/2022]
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Hasuike N, Deguchi R, Katoh H, Kisoda K, Nishio K, Isshiki T, Harima H. Structural properties of nanometre-sized ZnO crystals doped with Co. J Phys Condens Matter 2007; 19:365223. [PMID: 21694168 DOI: 10.1088/0953-8984/19/36/365223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Nanometre-sized ZnO crystals doped with Co were synthesized by a co-precipitation method combined with a thermal treatment. By changing the reaction temperature, we can control the crystallite size from roughly 10 nm particles to 20 nm × 200 nm nm rods grown along the hexagonal c-direction. X-ray diffraction and Raman scattering showed growth of high-quality wurtzite ZnO crystals incorporating Co systematically in the ZnO host lattice in the tested range of [Co]<3.0 mol%. Electronic transitions of Co in the oxygen tetrahedron were also observed in optical absorption, giving supporting evidence for systematic substitution of Co into the Zn site.
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Affiliation(s)
- N Hasuike
- Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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