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Mutoh N, Kakiuchi I, Hiraku A, Iwabuchi N, Kiyosawa K, Igarashi K, Tanaka M, Nakamura M, Miyasaka M. Heat-killed Lactobacillus helveticus improves mood states: a randomised, double-blind, placebo-controlled study. Benef Microbes 2023; 14:109-118. [PMID: 37026368 DOI: 10.3920/bm2022.0048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
We investigated the effects of heat-killed Lactobacillus helveticus MCC1848 on daily mood states in healthy young adults. Participants (n=58) were randomised to receive heat-killed L. helveticus MCC1848 powder or placebo powder for 4 weeks. During the study period, adverse events were recorded in the participant diary. Mood states were assessed before and 2 and 4 weeks after initiation of the intervention. The primary outcomes were the shortened version of the Profile of Mood States 2 (POMS 2) scores. Secondary outcomes included other mood state (State-Trait Anxiety Inventory (STAI); visual analogue scale (VAS)), quality of life (acute form of the SF-36v2), sleep (Athens Insomnia Scale (AIS)) and fatigue (Chalder Fatigue Scale (CFS)) scores. Four weeks of heat-killed L. helveticus MCC1848 intake, compared to placebo, significantly improved the shortened version of the POMS 2 'friendliness' and the VAS 'relaxed' scores, which are two indicators of positive mood states. On the other hand, heat-killed L. helveticus MCC1848 intake had no significant effects on negative mood state items (e.g. anger, nervousness, confusion) assessed by the shortened version of the POMS 2, STAI and VAS. AIS and CFS scores also showed no significant differences. No adverse effects were observed with 4 weeks of heat-killed L. helveticus MCC1848 intake. These results suggest that daily consumption of heat-killed L. helveticus MCC1848 is safe and has the potential to improve positive mood states. UMIN Clinical Trial Registry: UMIN000043697.
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Affiliation(s)
- N Mutoh
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, 2528583 Zama-city, Kanagawa, Japan
| | - I Kakiuchi
- Department of Nursing, Matsumoto Junior College, 3118, Sasaga, 399-0033, Matsumoto-city, Nagano, Japan
| | - A Hiraku
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, 2528583 Zama-city, Kanagawa, Japan
| | - N Iwabuchi
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, 2528583 Zama-city, Kanagawa, Japan
| | - K Kiyosawa
- Department of Nursing, Matsumoto Junior College, 3118, Sasaga, 399-0033, Matsumoto-city, Nagano, Japan
| | - K Igarashi
- Department of Nursing, Matsumoto Junior College, 3118, Sasaga, 399-0033, Matsumoto-city, Nagano, Japan
| | - M Tanaka
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome, Higashihara, 2528583 Zama-city, Kanagawa, Japan
| | - M Nakamura
- Matsumoto City Hospital, 4417-180 Hata, 390-1401 Matsumoto-city, Nagano, Japan
| | - M Miyasaka
- Department of Nursing, Matsumoto Junior College, 3118, Sasaga, 399-0033, Matsumoto-city, Nagano, Japan
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Troisi RI, Berardi G, Morise Z, Cipriani F, Ariizumi S, Sposito C, Panetta V, Simonelli I, Kim S, Goh BKP, Kubo S, Tanaka S, Takeda Y, Ettorre GM, Russolillo N, Wilson GC, Cimino M, Montalti R, Giglio MC, Igarashi K, Chan CY, Torzilli G, Cheung TT, Mazzaferro V, Kaneko H, Ferrero A, Geller DA, Han HS, Kanazawa A, Wakabayashi G, Aldrighetti L, Yamamoto M. Laparoscopic and open liver resection for hepatocellular carcinoma with Child-Pugh B cirrhosis: multicentre propensity score-matched study. Br J Surg 2021; 108:196-204. [PMID: 33711132 DOI: 10.1093/bjs/znaa041] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/03/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Laparoscopic liver resection for hepatocellular carcinoma (HCC) in Child-Pugh A cirrhosis has been demonstrated as beneficial. However, the role of laparoscopy in Child-Pugh B cirrhosis is undetermined. The aim of this retrospective cohort study was to compare open and laparoscopic resection for HCC with Child-Pugh B cirrhosis. METHODS Data on liver resections were gathered from 17 centres. A 1 : 1 propensity score matching was performed according to 17 predefined variables. RESULTS Of 382 available liver resections, 100 laparoscopic and 100 open resections were matched and analysed. The 90-day postoperative mortality rate was similar in open and laparoscopic groups (4.0 versus 2.0 per cent respectively; P = 0.687). Laparoscopy was associated with lower blood loss (median 110 ml versus 400 ml in the open group; P = 0.004), less morbidity (38.0 versus 51.0 per cent respectively; P = 0.041) and fewer major complications (7.0 versus 21.0 per cent; P = 0.010), and ascites was lower on postoperative days 1, 3 and 5. For laparoscopic resections, patients with portal hypertension developed more complications than those without (26 versus 12 per cent respectively; P = 0.002), and patients with a Child-Pugh B9 score had higher morbidity rates than those with B8 and B7 (7 of 8, 10 of 16 and 21 of 76 respectively; P < 0.001). Median hospital stay was 7.5 (range 2-243) days for laparoscopic liver resection and 18 (3-104) days for the open approach (P = 0.058). The 5-year overall survival rate was 47 per cent for open and 65 per cent for laparoscopic resection (P = 0.142). The 5-year disease-free survival rate was 32 and 37 per cent respectively (P = 0.742). CONCLUSION Patients without preoperative portal hypertension and Child-Pugh B7 cirrhosis may benefit most from laparoscopic liver surgery.
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Affiliation(s)
- R I Troisi
- Division of HPB, Minimally Invasive and Robotic Surgery, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy.,Department of Human Structure and Repair, Ghent University, Ghent, Belgium
| | - G Berardi
- Division of HPB, Minimally Invasive and Robotic Surgery, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy.,Department of Human Structure and Repair, Ghent University, Ghent, Belgium.,Centre for Advanced Treatment of Hepato-Biliary-Pancreatic Diseases, Ageo Central General Hospital, Tokyo, Japan
| | - Z Morise
- Department of Surgery, Fujita Health University Hospital, Toyoake, Japan
| | - F Cipriani
- Hepatobiliary Surgery Division, San Raffaele Hospital, Milan, Italy
| | - S Ariizumi
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
| | - C Sposito
- Department of Hepato-Biliary-Pancreatic Surgery and Liver Transplantation, Istituto Nazionale Tumori, Milan, Italy
| | - V Panetta
- Biostatistics Department, Sapienza University of Rome, Rome, Italy
| | - I Simonelli
- Biostatistics Department, Sapienza University of Rome, Rome, Italy
| | - S Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul,South Korea
| | - B K P Goh
- Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - S Kubo
- Department of Surgery, Osaka City University Hospital, Osaka, Japan
| | - S Tanaka
- Department of Surgery, Osaka City University Hospital, Osaka, Japan
| | - Y Takeda
- Department of Surgery, Kansai Rosai Hospital, Amagasaki, Japan
| | - G M Ettorre
- Department of General and Hepato-Biliary-Pancreatic Surgery, Liver Transplantation Service, San Camillo Forlanini Hospital, Rome, Italy
| | - N Russolillo
- Department of Surgery, Mauriziano Hospital, Turin, Italy
| | - G C Wilson
- Division of Hepatobiliary and Pancreatic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - M Cimino
- Department of General Surgery, Humanitas University and Research Hospital, IRCCS, Milan, Italy
| | - R Montalti
- Department of Public Health, Federico II University, Naples, Italy
| | - M C Giglio
- Division of HPB, Minimally Invasive and Robotic Surgery, Department of Clinical Medicine and Surgery, Federico II University Hospital, Naples, Italy
| | - K Igarashi
- Centre for Advanced Treatment of Hepato-Biliary-Pancreatic Diseases, Ageo Central General Hospital, Tokyo, Japan
| | - C-Y Chan
- Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - G Torzilli
- Department of General Surgery, Humanitas University and Research Hospital, IRCCS, Milan, Italy
| | - T T Cheung
- Division of Hepato-Biliary-Pancreatic and Liver Transplantation, Queen Mary Hospital, University of Hong Kong, Hong Kong, China
| | - V Mazzaferro
- Department of Hepato-Biliary-Pancreatic Surgery and Liver Transplantation, Istituto Nazionale Tumori, Milan, Italy
| | - H Kaneko
- Department of Surgery, Toho University of Tokyo, Tokyo, Japan
| | - A Ferrero
- Department of Surgery, Mauriziano Hospital, Turin, Italy
| | - D A Geller
- Division of Hepatobiliary and Pancreatic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - H-S Han
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul,South Korea
| | - A Kanazawa
- Department of Surgery, Osaka City General Hospital, Osaka, Japan
| | - G Wakabayashi
- Centre for Advanced Treatment of Hepato-Biliary-Pancreatic Diseases, Ageo Central General Hospital, Tokyo, Japan
| | - L Aldrighetti
- Hepatobiliary Surgery Division, San Raffaele Hospital, Milan, Italy
| | - M Yamamoto
- Department of Surgery, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
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3
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Miwa S, Nojima T, Alomesen AA, Ikeda H, Yamamoto N, Nishida H, Hayashi K, Takeuchi A, Igarashi K, Higuchi T, Yonezawa H, Araki Y, Morinaga S, Asano Y, Tsuchiya H. Associations of PD-L1, PD-L2, and HLA class I expression with responses to immunotherapy in patients with advanced sarcoma: post hoc analysis of a phase 1/2 trial. Clin Transl Oncol 2021; 23:1620-1629. [PMID: 33635466 DOI: 10.1007/s12094-021-02559-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/17/2020] [Accepted: 01/26/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Although immunotherapy is thought to be a promising cancer treatment, most patients do not respond to immunotherapy. In this post hoc analysis of a phase 1/2 study, associations of programmed death ligand 1 (PD-L1), PD-L2, and HLA class I expressions with responses to dendritic cells (DCs)-based immunotherapy were investigated in patients with advanced sarcoma. METHODS This study enrolled 35 patients with metastatic and/or recurrent sarcomas who underwent DC-based immunotherapy. The associations of PD-L1, PD-L2, and HLA class I expressions in tumor specimens, which were resected before immunotherapy, with immune responses (increases of IFN-γ and IL-12) and oncological outcomes were evaluated. RESULTS Patients who were PD-L2 (+) showed lower increases of IFN-γ and IL-12 after DC-based immunotherapy than patients who were PD-L2 (-). The disease control (partial response or stable disease) rates of patients who were PD-L1 (+) and PD-L1 (-) were 0% and 22%, respectively. Disease control rates of patients who were PD-L2 (+) and PD-L2 (-) were 13% and 22%, respectively. Patients who were PD-L1 (+) tumors had significantly poorer overall survival compared with patients who were PD-L1 (-). No associations of HLA class I expression with the immune response or oncological outcomes were observed. CONCLUSIONS This study suggests that PD-L1 and PD-L2 are promising biomarkers of DC-based immunotherapy, and that addition of immune checkpoint inhibitors to DC-based immunotherapy may improve the outcomes of DC-based immunotherapy.
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Affiliation(s)
- S Miwa
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
| | - T Nojima
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - A A Alomesen
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - H Ikeda
- Department of Pathology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - N Yamamoto
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Nishida
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - K Hayashi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - A Takeuchi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - K Igarashi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - T Higuchi
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Yonezawa
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Y Araki
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - S Morinaga
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Y Asano
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - H Tsuchiya
- Department of Orthopedic Surgery, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
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Nomura F, Nakanishi T, Igarashi K, Yamaguchi S, Setou M, Niwa T. Medical mass spectrometrist (MMS) training and certification: A key step to expanding routine clinical mass spectrometry usage in Japan. Clinical Mass Spectrometry 2020. [DOI: 10.1016/j.clinms.2019.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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5
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Sato Y, Matsui-Watanabe M, Matsumoto M, Sharda D, Igarashi K, Okuyama R. 330 Deficiency of Bach2 results in improved tumor immunity by enhancing effector function in CD8 T cells. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.525] [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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6
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Sato Y, Matsui-Watanabe M, Sharda D, Igarashi K, Okuyama R. 032 Bach2 suppresses tumor immunity by repressing effector function-related gene in CD8 + T cells. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.045] [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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7
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Kato J, Kawagoe Y, Jiang D, Kuwasako K, Shimamoto S, Igarashi K, Tokashiki M, Kitamura K. Plasma levels of natriuretic peptides and year-by-year blood pressure variability: a population-based study. J Hum Hypertens 2017; 31:525-529. [DOI: 10.1038/jhh.2017.14] [Citation(s) in RCA: 3] [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] [Received: 07/28/2016] [Revised: 01/12/2017] [Accepted: 01/23/2017] [Indexed: 10/20/2022]
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8
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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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9
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Fu YS, Hanaguri T, Igarashi K, Kawamura M, Bahramy MS, Sasagawa T. Observation of Zeeman effect in topological surface state with distinct material dependence. Nat Commun 2016; 7:10829. [PMID: 26905818 PMCID: PMC4770087 DOI: 10.1038/ncomms10829] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/25/2016] [Indexed: 11/09/2022] Open
Abstract
Manipulating the spins of the topological surface states represents an essential step towards exploring the exotic quantum states emerging from the time reversal symmetry breaking via magnetic doping or external magnetic fields. The latter case relies on the Zeeman effect and thereby we need to estimate the g-factor of the topological surface state precisely. Here, we report the direct observations of the Zeeman effect at the surfaces of Bi2Se3 and Sb2Te2Se by spectroscopic-imaging scanning tunnelling microscopy. The Zeeman shift of the zero mode Landau level is identified unambiguously by appropriately excluding the extrinsic effects arising from the nonlinearity in the band dispersion of the topological surface state and the spatially varying potential. Surprisingly, the g-factors of the topological surface states in Bi2Se3 and Sb2Te2Se are very different (+18 and −6, respectively). Such remarkable material dependence opens up a new route to control the spins of the topological surface states. The knowledge of how electrons behave under magnetic field provides inherent information for exotic quantum states. Here, Fu et al. find different g-factors of topological surface states in Bi2Se3 and Sb2Te2Se, which suggests possible control of such states in spin-related applications.
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Affiliation(s)
- Ying-Shuang Fu
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China.,RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - T Hanaguri
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - K Igarashi
- Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - M Kawamura
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan
| | - M S Bahramy
- RIKEN Center for Emergent Matter Science, Wako, Saitama 351-0198, Japan.,Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - T Sasagawa
- Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
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Kudo S, Igarashi K, Kimura H. Influence of the Fukushima Dai-ichi Nuclear Power Plant accident on environmental radioactivity in Aomori Prefecture. Radiat Prot Dosimetry 2015; 167:353-357. [PMID: 25953795 DOI: 10.1093/rpd/ncv278] [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: 06/04/2023]
Abstract
Radioactive nuclides with a short half-life, such as (131)I and (134)Cs, were detected in environmental samples collected in Aomori Prefecture after the Tokyo Electric Power Company Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. In addition, the observed (137)Cs concentration was increased over the background level. The gaseous (131)I concentration in air observed in April was higher than that observed in March immediately after the accident. Using a backward trajectory analysis, the authors found that the air mass had passed the vicinity of the Fukushima Dai-ichi Nuclear Power Plant when the gaseous (131)I concentration in air was increasing. Maximum (131)I and radioactive Cs concentrations in daily fallout samples collected in Aomori city were observed on 28 April, when (131)I was also detected in air. (134)Cs and (137)Cs concentration ratios in pine needles and pasture grass were nearly equal to 1, which indicates that the source of these radionuclides was the nuclear power plant accident.
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Affiliation(s)
- S Kudo
- Aomori Prefectural Nuclear Power Safety Center, 400-1 Kurauchi Sasazaki, Rokkasho-mura, Aomori, Japan
| | - K Igarashi
- Aomori Prefectural Nuclear Power Safety Center, 400-1 Kurauchi Sasazaki, Rokkasho-mura, Aomori, Japan
| | - H Kimura
- Aomori Prefectural Nuclear Power Safety Center, 400-1 Kurauchi Sasazaki, Rokkasho-mura, Aomori, Japan
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11
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Shimamura K, Kubo T, Akasaka T, Kozuma K, Kimura K, Kawamura M, Sumiyoshi T, Ino Y, Yoshiyama M, Sonoda S, Igarashi K, Miyazawa A, Uzui H, Sakanoue Y, Shinke T, Morino Y, Tanabe K, Kadota K, Kimura T. Outcomes of everolimus-eluting stent incomplete stent apposition: a serial optical coherence tomography analysis. Eur Heart J Cardiovasc Imaging 2014; 16:23-8. [DOI: 10.1093/ehjci/jeu174] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [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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Sugimoto K, Tanaka H, Katada R, Yoshida M, Igarashi K, Matsumoto H. P-30 * ETHANOL-INDUCED EXPRESSION OF ION CHANNELS IN RAT BRAIN SLICES. Alcohol Alcohol 2014. [DOI: 10.1093/alcalc/agu054.30] [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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13
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Bunjobpol W, Dulloo I, Igarashi K, Concin N, Matsuo K, Sabapathy K. Suppression of acetylpolyamine oxidase by selected AP-1 members regulates DNp73 abundance: mechanistic insights for overcoming DNp73-mediated resistance to chemotherapeutic drugs. Cell Death Differ 2014; 21:1240-9. [PMID: 24722210 PMCID: PMC4085530 DOI: 10.1038/cdd.2014.41] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 02/17/2014] [Accepted: 02/28/2014] [Indexed: 12/18/2022] Open
Abstract
Enhanced resistance to chemotherapy has been correlated with high levels of Delta-Np73 (DNp73), an anti-apoptotic protein of the p53 tumor-suppressor family which inhibits the pro-apoptotic members such as p53 and TAp73. Although genotoxic drugs have been shown to induce DNp73 degradation, lack of mechanistic understanding of this process precludes strategies to enhance the targeting of DNp73 and improve treatment outcomes. Antizyme (Az) is a mediator of ubiquitin-independent protein degradation regulated by the polyamine biosynthesis pathway. We show here that acetylpolyamine oxidase (PAOX), a catabolic enzyme of this pathway, upregulates DNp73 levels by suppressing its degradation via the Az pathway. Conversely, downregulation of PAOX activity by siRNA-mediated knockdown or chemical inhibition leads to DNp73 degradation in an Az-dependent manner. PAOX expression is suppressed by several genotoxic drugs, via selected members of the activator protein-1 (AP-1) transcription factors, namely c-Jun, JunB and FosB, which are required for stress-mediated DNp73 degradation. Finally, chemical- and siRNA-mediated inhibition of PAOX significantly reversed the resistant phenotype of DNp73-overexpressing cancer cells to genotoxic drugs. Together, these data define a critical mechanism for the regulation of DNp73 abundance, and reveal that inhibition of PAOX could widen the therapeutic index of cytotoxic drugs and overcome DNp73-mediated chemoresistance in tumors.
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Affiliation(s)
- W Bunjobpol
- Laboratory of Molecular Carcinogenesis, Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, 11, Hospital Drive, Singapore, Singapore
| | - I Dulloo
- Laboratory of Molecular Carcinogenesis, Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, 11, Hospital Drive, Singapore, Singapore
| | - K Igarashi
- Amine Pharma Research Institute, Innovation Plaza at Chiba University, 1-8-15Inohana, Chiba, Japan
| | - N Concin
- Department of Obstetrics and Gynecology, Innsbruck Medical University, Anichstrasse 35, Innsbruck, Austria
| | - K Matsuo
- Department of Microbiology and Immunology, School of Medicine, Keio University, 35 Shinanomachi, Tokyo, Japan
| | - K Sabapathy
- Laboratory of Molecular Carcinogenesis, Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, 11, Hospital Drive, Singapore, Singapore
- Cancer and Stem Cell Biology Program, Duke-NUS Graduate Medical School, 8, College Road, Singapore, Singapore
- Department of Biochemistry, National University of Singapore, 8, Medical Drive, Singapore, Singapore
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14
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Igarashi K, Yamamoto N, Shirai T, Hayashi K, Nishida H, Kimura H, Takeuchi A, Tsuchiya H. The long-term outcome following the use of frozen autograft treated with liquid nitrogen in the management of bone and soft-tissue sarcomas. Bone Joint J 2014; 96-B:555-61. [DOI: 10.1302/0301-620x.96b4.32629] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [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: 01/05/2023]
Abstract
In 1999, we developed a technique for biological reconstruction after excision of a bone tumour, which involved using autografts of the bone containing the tumour treated with liquid nitrogen. We have previously reported the use of this technique in 28 patients at a mean follow up of 27 months (10 to 54). In this study, we included 72 patients who underwent reconstruction using this technique. A total of 33 patients died and three were lost to follow-up, at a mean of 23 months (2 to 56) post-operatively, leaving 36 patients available for a assessment at a mean of 101 months 16 to 163) post-operatively. The methods of reconstruction included an osteo-articular graft in 16, an intercalary in 13 and, a composite graft with prosthesis in seven. Post-operative function was excellent in 26 patients (72.2%), good in seven (19.4%), and fair in three (8.3%) according to the functional evaluation system of Enneking. No recurrent tumour occurred within the grafts. The autografts survived in 29 patients (80.6%), and the rates of survival at five and ten years were 86.1% and 80.6 %, respectively. Seven of 16 osteo-articular grafts (44%) failed because of fracture or infection, but all the composite and intercalary grafts survived. The long-term outcomes of frozen autografting, particularly using composite and intercalary grafts, are satisfactory and thus represent a good method of treatment for patients with a sarcoma of bone or soft tissue. Cite this article: Bone Joint J 2014;96-B:555–61.
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Affiliation(s)
- K. Igarashi
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - N. Yamamoto
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - T. Shirai
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - K. Hayashi
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - H. Nishida
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - H. Kimura
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - A. Takeuchi
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
| | - H. Tsuchiya
- Kanazawa University, Department
of Orthopaedic Surgery, 13-1 Takaramachi, Kanazawa
920-8641, Japan
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15
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Sawada T, Nakamura K, Igarashi K, Shoji A, Kimura E, Hayashi H, Tahara K, Aoki J, Yatomi Y. AB0220 Serum phosphatidylserine-specific phospholipase A1 (PS-PLA1) is increased in active systemic lupus erythematosus (SLE) and is correlated with disease activity. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.220] [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: 11/03/2022]
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16
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Takahashi H, Tsuritani T, de Gabory ELT, Ito T, Peng WR, Igarashi K, Takeshima K, Kawaguchi Y, Morita I, Tsuchida Y, Mimura Y, Maeda K, Saito T, Watanabe K, Imamura K, Sugizaki R, Suzuki M. First demonstration of MC-EDFA-repeatered SDM transmission of 40 x 128-Gbit/s PDM-QPSK signals per core over 6,160-km 7-core MCF. Opt Express 2013; 21:789-795. [PMID: 23388971 DOI: 10.1364/oe.21.000789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate the first 7-core multicore erbium-doped fiber amplified (MC-EDFA) transmission of 40 x 128-Gbit/s PDM-QPSK signals over 6,160-km 7-core multicore fiber (MCF). The crosstalk (XT) from all of the other 6 cores of a MC-EDFA and a 55-km length MCF are about -46.5 dB and -45.6 dB at center core, respectively. The core-to-core rotation approach at every amplified span is used to average the XT of all cores. The averaged optical signal-to-noise ratio (OSNR) after 6,160-km transmission is 15.6 dB with 0.1 nm resolution bandwidth. The Q-factor of all 40 channels surpasses the threshold of the forward-error-correction of 6.4 dB with 1 dB margin after 6,160 km. The total net capacity is 28.8 Tbit/s per fiber and achieved capacity-distance product is 177 Pbit/s.km per fiber. We confirmed the feasibility of MC-EDFA repeatered systems for trans-oceanic transmission.
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Affiliation(s)
- H Takahashi
- KDDI R&D Laboratories Inc., Fujimino, Saitama, Japan.
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Casolari DA, Makri M, Yoshida C, Muto A, Igarashi K, Melo JV. Transcriptional suppression of BACH2 by the Bcr-Abl oncoprotein is mediated by PAX5. Leukemia 2012; 27:409-15. [DOI: 10.1038/leu.2012.220] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [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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18
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Mitani K, Haruyama N, Hatakeyama J, Igarashi K. Amelogenin splice isoforms stimulate chondrogenic differentiation of ATDC5 cells. Oral Dis 2012; 19:169-79. [DOI: 10.1111/j.1601-0825.2012.01967.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Revised: 06/03/2012] [Accepted: 06/15/2012] [Indexed: 12/15/2022]
Affiliation(s)
- K Mitani
- Department of Oral Dysfunction Science; Tohoku University Graduate School of Dentistry; Sendai Japan
| | - N Haruyama
- Department of Oral Dysfunction Science; Tohoku University Graduate School of Dentistry; Sendai Japan
- Global Centre of Excellence Program; International Research Centre for Molecular Science in Tooth and Bone Diseases; Tokyo Medical and Dental University; Tokyo Japan
| | - J Hatakeyama
- Functional Structure Section; Fukuoka Dental College; Fukuoka Japan
| | - K Igarashi
- Department of Oral Dysfunction Science; Tohoku University Graduate School of Dentistry; Sendai Japan
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Nakanome A, Brydun A, Matsumoto M, Ota K, Funayama R, Nakayama K, Ono M, Shiga K, Kobayashi T, Igarashi K. Bach1 is critical for the transformation of mouse embryonic fibroblasts by RasV12 and maintains ERK signaling. Oncogene 2012; 32:3231-45. [DOI: 10.1038/onc.2012.336] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 06/07/2012] [Accepted: 06/20/2012] [Indexed: 12/23/2022]
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Abstract
Physiochemical assessment of the parasite-biomaterial interface is essential in the development of new biomaterials. The purpose of this study was to develop a method to evaluate pH at the bacteria-dental cement interface and to demonstrate physiochemical interaction at the interface. The experimental apparatus with a well (4.0 mm in diameter and 2.0 mm deep) was made of polymethyl methacrylate with dental cement or polymethyl methacrylate (control) at the bottom. Three representative dental cements (glass-ionomer, zinc phosphate, and zinc oxide-eugenol cements) were used. Each specimen was immersed in 2 mM potassium phosphate buffer for 10 min, 24 hrs, 1 wk, or 4 wks. The well was packed with Streptococcus mutans NCTC 10449, and a miniature pH electrode was placed at the interface between bacterial cells and dental cement. The pH was monitored after the addition of 1% glucose, and the fluoride contained in the cells was quantified. Glass-ionomer cement inhibited the bacteria-induced pH fall significantly compared with polymethyl methacrylate (control) at the interface (10 min, 5.16 ± 0.19 vs. 4.50 ± 0.07; 24 hrs, 5.20 ± 0.07 vs. 4.59 ± 0.11; 1 wk, 5.34 ± 0.14 vs. 4.57 ± 0.11; and 4 wks, 4.95 ± 0.27 vs. 4.40 ± 0.14), probably due to the fluoride released from the cement. This method could be useful for the assessment of pH at the parasite-biomaterial interface.
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Affiliation(s)
- G Mayanagi
- Division of Oral Ecology and Biochemistry, Department of Oral Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
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Miwa S, Shirai T, Taki J, Yamamoto N, Nishida H, Hayashi K, Kimura H, Takeuchi A, Igarashi K, Tsuchiya H. A novel combined radiologic method for evaluation of the response to chemotherapy for primary bone sarcoma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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22
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Kwong W, Neilson AL, Hamilton RM, Chiu CC, Stephenson EA, Gross GJ, Soucie L, Kirsh JA, xian-hui Z, Bao-peng T, Jin-xin L, Yu Z, Yan-yi Z, Jiang-hua Z, Hirahara T, Sugawara Y, Suga C, Ako J, Momomura S, Ardashev AV, Zhelyakov EG, Konev AV, Rybachenko MS, Belenkov YN, Bai R, Di Biase L, Santangeli P, Saenz LC, Verma A, Sanchez J, Tondo C, Natale A, Safari F, Hajizadeh S, Mani A, Khoshbaten A, Foadoddini M, Forush SS, Bayat G, Kim SH, Chong D, Ching CK, Liew R, Galalardin, Khin MW, Teo WS, Chong D, Tan BY, Liew R, Ching CK, Teo WS, Sakamoto T, Al Mehairi M, Al Ghamdi SA, Dagriri K, Al Fagih A, Selvaraj R, Ezhumalai B, Satheesh S, Ajit A, Gobu P, Balachander J, Liu XQ, Zhou X, Yang G, Zhong GZ, Shi L, Tian Y, Li YB, Wang AH, Yang XC, Takenaka S, Ozaki H, Nakamura M, Otsuka M, Tsurumi Y, Nolker G, Gutleben KJ, Ritscher G, Sinha AM, Muntean B, Heintze J, Vogt J, Brachmann J, Horstkotte D, Katsuyuki T, Katsuyuki T, McGrew F, Johnson E, Coppess M, Fan I, Li S, Zhiyu L, Zengzhang L, Xianbin L, Yuehui Y, Min L, Shu-long Z, Dong C, Zhi-tao Z, Xian-jing W, Ying-xue D, Shu-Long Z, Dong C, Zhi-Tao Z, Xian-Jing W, Ying-Xue D, Liu P, Guo JH, Zhang Z, Li J, Liu HG, Zhang HC, Zvereva V, Rillig A, Meyerfeldt U, Jung W, Wei L, Qi G, Zhang Q, Xia Y, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Li Z, Zhao QY, Huang CX, Doi A, Satomi K, Nakajima I, Makimoto H, Yokoyama T, Yamada Y, Okamura H, Noda T, Aiba T, Shimizu W, Aihara N, Kamakura S, Min-Seok C, Jeong-Wook P, Young-Woong H, Sung-Eun P, Jae-Sun U, Yong-Seog O, Woo-Seung S, Ji-Hoon K, Seong-Won J, Man-Young L, Tae-Ho R, Uhm JS, Oh YS, Choi MS, Park JW, Ha YW, Park SE, Jang SW, Shin WS, Kim JH, Lee MY, Rho TH, Nielsen JB, Olesen MS, Tango M, Haunso S, Holst AG, Svendsen JH, Poci D, Thogersen AM, Riahi S, Linde P, Edvardsson N, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, Khoo CW, Krishnamoorthy S, Dwivedi G, Balakrishnan B, Lim HS, Lip GYH, D'Ascia S, D'ascia C, Marino V, Chiariello M, Santulli G, Music L, Anderson K, Benzaquen BS, Saponieri C, Yassin H, Fridman V, Vasavada BC, Turitto G, El-Sherif N, Saponieri C, Prabhu H, Yassin H, Fridman V, Huang Y, Vasavada BC, Turitto G, El-Sherif N, Ortega MC, Sosa ESH, Ugalde AN, Al Jamil A, Abu Siddique M, Haque KMHSS, Suga C, Hirahara T, Sugawara Y, Ako J, Momomura SI, Mlynarski R, Mlynarska A, Ilczuk G, Mlynarski R, Mlynarska A, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Mlynarska A, Mlynarski R, Wilczek J, Sosnowski M, Kohno R, Abe H, Nagatomo T, Oginosawa Y, Minamiguchi H, Otsuji Y, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Minamiguchi H, Abe H, Kohno R, Oginosawa Y, Otsuji Y, Ekinci S, Yesil M, Bayata S, Vurgun VK, Arikan E, Postaci N, Xiaoqing R, Jielin P, Shu Z, Liang M, Fangzheng W, Takahashi K, Tokano T, Nakazato Y, Doi S, Shiozawa T, Konishi H, Hiki M, Kato Y, Komatsu S, Takahashi S, Kubota N, Tamura H, Suwa S, Ohki M, Katsumata T, Kizu K, Bito F, Sumiyoshi M, Juntendo HD, Yamada Y, Okamura H, Nakajima I, Doi A, Makimoto H, Yukoyama T, Noda T, Satomi K, Aiba T, Shimizu W, Aihara N, Kamakura S, Perna F, Leo M, Leccisotti L, Casella M, Pelargonio G, Lago M, Bencardino G, Narducci ML, Russo E, Santangeli P, Giordano A, Bellocci F, Song T, Yang J, Huang C, Zhang J, Huang C, Wu P, Yang J, Song T, Chen Y, Fan X, Wang T, Wang X, Tang Y, Wu P, Huang CX, Zhang J, Fan XR, Chen YJ, Li XW, Yang J, Song T, Chiu CC, Buescher T, Obias-Manno D, Yoo CJ, Huh J, Ortega MC, Nakanishi H, Hirata A, Wada M, Kashiwase K, Okada M, Ueda Y, Su D, Niu XL, Song AQ, Kohno R, Abe H, Minamiguchi H, Oginosawa Y, Nagatomo T, Otsuji Y, Fujii S, Yambe Y, Shiiba K, Sakakibara M, Takenaka S, Watanabe A, Wada T, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Wada T, Watanabe A, Koide Y, Ikeda M, Toda H, Hashimoto K, Terasaka R, Nakahama M, Okada Y, Mizuno H, Ide H, Ueno T, Kogaki S, Ozono K, Nanto S, Statescu C, Bercea R, Sascau RA, Georgescu CA, Ortega MC, Athanas E, Ortega MC, Athanas E, Mironov NY, Bakalov SA, Jarova EA, Rodionova ES, Mironova NA, Kim J, Ahn MS, Han DC, Choo JTL, Chen CK, Tan TH, Ong KK, Kam R, Curnis A, Bontempi L, Coppola G, Cerini M, Vassanelli F, Lipari A, Gennaro F, Pagnoni C, Ashofair N, Cas LD, Gourineni V, Wong KL, Davoudi R, Hamid N, Chong D, Yew TB, Liew R, Keong CC, Siong TW, Fuke E, Shimizu H, Kimura S, Hao K, Watanabe R, Seo JB, Chung WY, Kim SH, Kim MA, Zo ZH, Krishinan S, Skuratova NA, Belyaeva LM, Bae MH, Lee JH, Lee HS, Yang DH, Park HS, Cho Y, Chae SC, Jun JE, Rychkova LV, Dolgikh VV, Zurbanova LV, Zurbanov AV, Aleksanyan A, Matevosyan A, Podosyan G, Zelveian P, Aleksanyan A, Podosyan G, Matevosyan A, Zelveian P, Choi HO, Nam GB, Kim YR, Kim KH, Kim SH, Choi KJ, Kim YH, Pakpahan HAP, Wei D, Qizhu T, Xiaofei Y, Kai G, Siting F, Ji H, Sato A, Tanabe Y, Hayashi Y, Yoshida T, Ito E, Chinushi M, Hasegawa K, Yagihara N, Iijima K, Izumi D, Watanabe H, Furushima H, Aizawa Y, Dong YX, Dong YX, Burnett JC, Chen HH, Sandberg S, Zhang Y, Chen PS, Cha YM, Mlynarski R, Mlynarska A, Wilczek J, Sosnowski M, Zhou XH, Tang BP, Li JX, Zhang Y, Li YD, Zhang JH, Arsenos P, Gatzoulis K, Gialernios T, Dilaveris P, Sideris S, Archontakis S, Tsiachris D, Christodoulos S, Feng Z, Baogui S, Li L, Ming L, Bai R, Di Biase L, Mohanty P, Hesselson AB, De Ruvo E, Gallagher PL, Minati M, Natale LCA, Tomassoni GF, Gan T, Tang B, Xu G, Li J, Zhang Y, Zhou X, Zhang Y, Hosoda J, Ishikawa T, Matsushita K, Matsumoto K, Kimura Y, Miyamoto M, Sugano T, Ishigami T, Uchino K, Kimura K, Umemura S, Nakajima I, Noda T, Shimizu W, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Nakajima I, Noda T, Shimizu W, Kurita T, Yokoyama T, Makimoto H, Doi A, Yamada Y, Okamura H, Satomi K, Aiba T, Aihara N, Kamakura S, Wang T, Huang CX, Wang T, Huang CX, Ruan L, Zhang C, Cai S, Bai R, Liu N, Ruan Y, Quan X, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Sapelnikov OV, Latypov RS, Grishin IR, Mareev YV, Saidova MA, Akchurin RS, Arsenos P, Gatzoulis K, Manis G, Dilaveris P, Archontakis S, Tsiachris D, Mytas D, Papafanis T, Papavasileiou MV, Stefanadis C, Ren LN, Fang XH, Wang YQ, Qi GX, Zeng QX, Zheng ZT, Zhong JQ, Wang YL, Liu HZ, Liu DL, Meng XL, Li JS, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Liu DL, Meng XL, Li JS, Su GY, Wang J, Zhang Y, Liu HZ, Zhong JQ, Zeng QX, Wang YL, Liu DL, Meng XL, Li JS, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Li JS, Zhong JQ, Zeng QX, Liu HZ, Meng XL, Liu DL, Su GY, Zhang Y, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Nicolson WB, Kundu S, Tyagi N, Meatcher PDS, Yusuf S, Jeilan M, Stafford PJ, Sandilands AJ, Loke I, Ng GA, Solak Y, Gul EE, Atalay H, Abdulhalikov T, Kayrak M, Turk S, Kang JK, Kim NY, Park SH, Lee JH, Park HS, Cho Y, Chae SC, Jun JE, Park WH, Belyaeva LM, Skuratova NA, Pogodina AV, Dolgikh VV, Valjavskaja OV, Zurbanov AV, Chen YX, Luo NS, Wang JF, Zhang S, Ishimaru S, Miyakawa M, Kakinoki R, Tadokoro M, Kitani S, Sugaya T, Nishimura K, Igarashi T, Okabayashi H, Furuya J, Igarashi Y, Igarashi K, Su T, Winlaw D, Chard R, Nicholson I, Sholler G, Lau K, Sun Q, Cheng KP, Cheng R, Hua W, Pu JL, Zhang S, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Lim CP, Chan LL, Teo LW, Kwok BWK, Sim DKL, Ching CK, Curnis A, Bontempi L, Cerini M, Lipari A, Vassanelli F, Pagnoni C, Ashofair N, Moneghini D, Cestari R, Cas LD, Al Fagih A, Al Shurafa H, Al Ghamdi S, Dagriri K, Al Khadra A, Iijima K, Chinushi M, Hasegawa K, Yagihara N, Sato A, Izumi D, Watanabe H, Furushima H, Aizawa Y, Furushima H, Chinushi M, Iijima K, Izumi D, Hasegawa K, Yagihara N, Watanabe H, Sato A, Aizawa Y, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Agacdiken A, Yalug I, Vural A, Celikyurt U, Ural D, Aker T, Heintze J, Schloss E, Auricchio A, Zeng C, Sterns L, Farooqi F, Kamdar R, Adhya S, Bayne S, Jackson T, Pollock L, Sterns L, Gall N, Murgatroyd F, Guo Y, Wang Y, Yang T, Zhu P, Liu H, Zhao Y, Zhang L, Gao W, Gao M. Poster presentation. Europace 2011. [DOI: 10.1093/europace/euq492] [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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23
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Igarashi K, Kajino M, Shirai M, Oki J, Seki K. [A case of acute disseminated encephalomyelitis associated with Epstein-Barr virus infection]. No To Hattatsu 2011; 43:59-61. [PMID: 21400935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Yoshimura N, Fujita H, Muranaka H, Igarashi K, Shioya M, Goto Y, Nonaka I, Koide N. P4.63 MELAS presenting marked brain atrophy and hypertrophic cardiomyopathy: report of an autopsy case. Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.259] [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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25
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Igarashi K, Shibuya S, Sano H, Takahashi M, Hasegawa M, Ichimura S, Satomi K, Ohki Y. P31-17 Analysis of the target-reaching movement in patients with cervical myelopathy. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61184-4] [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: 11/29/2022]
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Chen YL, Chu JH, Analytis JG, Liu ZK, Igarashi K, Kuo HH, Qi XL, Mo SK, Moore RG, Lu DH, Hashimoto M, Sasagawa T, Zhang SC, Fisher IR, Hussain Z, Shen ZX. Massive Dirac Fermion on the Surface of a Magnetically Doped Topological Insulator. Science 2010; 329:659-62. [DOI: 10.1126/science.1189924] [Citation(s) in RCA: 970] [Impact Index Per Article: 69.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Yoshinari O, Igarashi K. Anti-Diabetic Effect of Trigonelline and Nicotinic Acid, on KK-Ay Mice. Curr Med Chem 2010; 17:2196-202. [DOI: 10.2174/092986710791299902] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Accepted: 04/23/2010] [Indexed: 11/22/2022]
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Hirabayashi Y, Yoon B, Igarashi K, Kodama Y, Sekita K, Kaneko T, Kanno J, Inoue T. Strain differences of the effect of benzene exposure: Microarray study of the bone marrow in C57BL/6 and C3H/He mice. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.597] [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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29
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Hirai M, Minematsu H, Hiramatsu Y, Kitagawa H, Otani T, Iwashita S, Kudoh T, Chen L, Li Y, Okada M, Salomon D, Igarashi K, Chikuma M, Seno M. Novel and simple loading procedure of cisplatin into liposomes and targeting tumor endothelial cells. Int J Pharm 2010; 391:274-83. [DOI: 10.1016/j.ijpharm.2010.02.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 01/01/2010] [Accepted: 02/27/2010] [Indexed: 02/06/2023]
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Harusato A, Naito Y, Takagi T, Yamada S, Mizushima K, Hirai Y, Horie R, Inoue K, Fukumoto K, Hirata I, Omatsu T, Kishimoto E, Uchiyama K, Handa O, Ishikawa T, Kokura S, Ichikawa H, Muto A, Igarashi K, Yoshikawa T. Inhibition of Bach1 ameliorates indomethacin-induced intestinal injury in mice. J Physiol Pharmacol 2009; 60 Suppl 7:149-154. [PMID: 20388958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/15/2009] [Accepted: 12/11/2009] [Indexed: 05/29/2023]
Abstract
BTB and CNC homolog 1 (Bach1) is a transcriptional repressor of heme oxygenase-1 (HO-1). It plays an important role in the feedback regulation of HO-1 expression, which protects cells from various insults including oxidative stress and inflammatory cytokines. However, the role of Bach1 in intestinal inflammation remains unclear. In this study, the role of Bach1 in intestinal mucosal injury was elucidated using 8-week-old female C57BL/6 (wild-type) and homozygous Bach1-deficient C57BL/6 mice. Intestinal mucosal injuries induced by a single subcutaneous administration of indomethacin were evaluated macroscopically, histologically, and biochemically. Mucosal protein content and chemokine mRNA levels were determined by real-time PCR. Our results showed that the indomethacin-induced intestinal injury was remarkably improved in Bach1-deficient mice. Histological examination showed that the area of injured lesion was decreased in Bach1-deficient mice compared to wild-type mice. Administration of indomethacin induced expression of inflammatory chemokines such as KC, MIP1alpha and MCP1, which was suppressed in Bach1-deficient mice. Myeloperoxidase activity in the intestinal mucosa was also significantly decreased in Bach1-deficient mice. Additionally, Bach1 deficiency enhanced immunopositivity of HO-1 in the intestinal mucosa after indomethacin administration. Disruption of the Bach1 gene thus caused inhibition of mucosal injury, indicating that inhibition of Bach1 may be a novel therapeutic strategy for treating indomethacin-induced intestinal injury.
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Affiliation(s)
- A Harusato
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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31
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Suzuki K, Igarashi K, Sekine H, Nozawa E, Ishii N. UP-2.014: Present Aspects and Trends of Acute Simple Cystitis in Japanese Females: Relationship Between Mean Monthly Temperature and Disease Onset. Urology 2009. [DOI: 10.1016/j.urology.2009.07.233] [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: 10/20/2022]
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32
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Igarashi K, Sagara K, Egawa J. No. 5�Vol 42, No. 4, pp. 313-318, 2008�A New Water-in-Powder Technology A Novel Structure for Creating Unique Cosmetic �Products. Int J Cosmet Sci 2009. [DOI: 10.1111/j.1468-2494.2009.00518_4.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Abstract
During orthodontic tooth movement, the activation of the vascular system in the compressed periodontal ligament (PDL) is an indispensable process in tissue remodeling. We hypothesized that compressive force would induce angiogenesis of PDL through the production of vascular endothelial growth factor (VEGF). We examined the localization of VEGF in rat periodontal tissues during experimental tooth movement in vivo, and the effects of continuous compressive force on VEGF production and angiogenic activity in human PDL cells in vitro. PDL cells adjacent to hyalinized tissue and alveolar bone on the compressive side showed marked VEGF immunoreactivity. VEGF mRNA expression and production in PDL cells increased, and conditioned medium stimulated tube formation. These results indicate that continuous compressive force enhances VEGF production and angiogenic activity in PDL cells, which may contribute to periodontal remodeling, including angiogenesis, during orthodontic tooth movement.
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Affiliation(s)
- A Miyagawa
- Division of Oral Dysfunction Science, Department of Oral Health and Development Sciences, Graduate School of Dentistry, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
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Igarashi K. The Possible Role of an Active Metafbollte Derived from the Neuroleptic Agent Haloperidol in Drug-Induced Parkinsonism. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/15569549809006488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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35
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Igarashi K, Sagara K, Egawa J. A new water-in-powder technology: a novel structure for creating unique cosmetic products. Int J Cosmet Sci 2009. [DOI: 10.1111/j.1468-2494.2008.00451_4.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Horimoto M, Igarashi K, Takenaka T, Inoue H, Yamazaki K, Sakuragi H. Acetylcholine- and ergonovine-induced coronary microvascular spasm reflected by increased coronary vascular resistance and myocardial lactate production. Clin Cardiol 2009; 23:221-5. [PMID: 10761816 PMCID: PMC6655165 DOI: 10.1002/clc.4960230320] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Diagnosis of coronary microvascular spasm remains largely speculative because it has been mostly based on chest pain and electrocardiographic ST-segment shift with slow filling of contrast medium into the coronary artery. A patient with resting chest pain and normal coronary angiograms underwent provocative tests with intracoronary acetylcholine (ACh) and ergonovine. During the tests, coronary diameter and flow velocity in the left anterior descending (LAD) coronary artery were measured with quantitative coronary angiography and intracoronary Doppler guide wire, respectively. Vascular resistance of the LAD and lactate production were determined separately. With injections of 100 microg of ACh and 20 microg of ergonovine, chest pain occurred with ST-segment elevation in the precordial leads in the absence of epicardial coronary spasm. Coronary vascular resistance increased by 2.2- and 1.6-fold of the baseline value with ACh and ergonovine, respectively. Myocardial lactate production was noted during the ST-segment elevation. Coronary microvascular spasm was verified by the increment in coronary vascular resistance and myocardial lactate production with concomitant ST-segment elevation in the presence of normal coronary angiograms.
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Affiliation(s)
- M Horimoto
- Division of Cardiology, Sapporo National Hospital, Japan
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37
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Asai R, Nishino T, Matsumura T, Okamoto K, Igarashi K, Pai EF, Nishino T. Two Mutations Convert Mammalian Xanthine Oxidoreductase to Highly Superoxide-productive Xanthine Oxidase. J Biochem 2008. [DOI: 10.1093/jb/mvn111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Sanosaka T, Namihira M, Asano H, Kohyama J, Aisaki K, Igarashi K, Kanno J, Nakashima K. Identification of genes that restrict astrocyte differentiation of midgestational neural precursor cells. Neuroscience 2008; 155:780-8. [PMID: 18640244 DOI: 10.1016/j.neuroscience.2008.06.039] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 05/22/2008] [Accepted: 06/13/2008] [Indexed: 01/21/2023]
Abstract
During development of the mammalian CNS, neurons and glial cells (astrocytes and oligodendrocytes) are generated from common neural precursor cells (NPCs). However, neurogenesis precedes gliogenesis, which normally commences at later stages of fetal telencephalic development. Astrocyte differentiation of mouse NPCs at embryonic day (E) 14.5 (relatively late gestation) is induced by activation of the transcription factor signal transducer and activator of transcription (STAT) 3, whereas at E11.5 (mid-gestation) NPCs do not differentiate into astrocytes even when stimulated by STAT3-activating cytokines such as leukemia inhibitory factor (LIF). This can be explained in part by the fact that astrocyte-specific gene promoters are highly methylated in NPCs at E11.5, but other mechanisms are also likely to play a role. We therefore sought to identify genes involved in the inhibition of astrocyte differentiation of NPCs at midgestation. We first examined gene expression profiles in E11.5 and E14.5 NPCs, using Affymetrix GeneChip analysis, applying the Percellome method to normalize gene expression level. We then conducted in situ hybridization analysis for selected genes found to be highly expressed in NPCs at midgestation. Among these genes, we found that N-myc and high mobility group AT-hook 2 (Hmga2) were highly expressed in the E11.5 but not the E14.5 ventricular zone of mouse brain, where NPCs reside. Transduction of N-myc and Hmga2 by retroviruses into E14.5 NPCs, which normally differentiate into astrocytes in response to LIF, resulted in suppression of astrocyte differentiation. However, sustained expression of N-myc and Hmga2 in E11.5 NPCs failed to maintain the hypermethylated status of an astrocyte-specific gene promoter. Taken together, our data suggest that astrocyte differentiation of NPCs is regulated not only by DNA methylation but also by genes whose expression is controlled spatio-temporally during brain development.
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Affiliation(s)
- T Sanosaka
- Laboratory of Molecular Neuroscience, Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara 630-0101, Japan
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39
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Bissel P, Khalil A, Rimoldi JM, Igarashi K, Edmondson D, Miller A, Castagnoli N. Stereochemical studies on the novel monoamine oxidase B substrates (1R,6S)- and (1S,6R)-3-methyl-6-phenyl-3-aza-bicyclo[4.1.0]heptane. Bioorg Med Chem 2008; 16:3557-64. [PMID: 18313306 DOI: 10.1016/j.bmc.2008.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2008] [Revised: 01/31/2008] [Accepted: 02/05/2008] [Indexed: 11/16/2022]
Abstract
Previous studies have established the unexpected monoamine oxidase-B (MAO-B) substrate properties of racemic 3-methyl-6-phenyl-3-aza-bicyclo[4.1.0]heptane, the 3,4-cyclopropyl analog of the achiral proneurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). The two stereocenters present in this compound provide an opportunity to examine the enantioselectivity and diastereoselectivity of the MAO-B-catalyzed ring alpha-carbon oxidation of cyclic tertiary amines to give the corresponding conjugated iminiumyl metabolites. This paper reports the results of such stereochemical studies using expressed human MAO-B as the catalyst.
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Affiliation(s)
- Philippe Bissel
- Department of Chemistry, Virginia Polytechnic Institute and State University, West Campus Dr., Blacksburg, VA 24061-0212, USA.
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40
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Ochiai K, Muto A, Tanaka H, Takahashi S, Igarashi K. Regulation of the plasma cell transcription factor Blimp-1 gene by Bach2 and Bcl6. Int Immunol 2008; 20:453-60. [DOI: 10.1093/intimm/dxn005] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [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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41
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Suzuki K, Igarashi K, Sekine H, Nozawa E, Yoshida N, Ishii N. MP-01.07: Present aspects and trend of acute simple cystitis in japanese females. Urology 2007. [DOI: 10.1016/j.urology.2007.06.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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42
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Murata T, Maruoka N, Omata N, Takashima Y, Igarashi K, Kasuya F, Fujibayashi Y, Wada Y. Effects of haloperidol and its pyridinium metabolite on plasma membrane permeability and fluidity in the rat brain. Prog Neuropsychopharmacol Biol Psychiatry 2007; 31:848-57. [PMID: 17363126 DOI: 10.1016/j.pnpbp.2007.01.023] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2006] [Revised: 01/10/2007] [Accepted: 01/23/2007] [Indexed: 11/15/2022]
Abstract
The use of antipsychotic drugs is limited by their tendency to produce extrapyramidal movement disorders such as tardive dyskinesia and parkinsonism. In previous reports it was speculated that extrapyramidal side effects associated with the butyrophenone neuroleptic agent haloperidol (HP) could be caused in part by the neurotoxic effect of its pyridinium metabolite (HPP(+)). Although both HPP(+) and HP have been shown to induce neurotoxic effects such as loss of cell membrane integrity, no information exists about the difference in the neurotoxic potency, especially in the potency to induce plasma membrane damage, between these two agents. In the present study, we compared the potency of the interaction of HPP(+) and HP with the plasma membrane integrity in the rat brain. Membrane permeabilization (assessed as [(18)F]2-fluoro-2-deoxy-d-glucose-6-phosphate release from brain slices) and fluidization (assessed as the reduction in the plasma membrane anisotropy of 1,6-diphenyl 1,3,5-hexatriene) were induced by HPP(+) loading (at >or=100 microM and >or=10 microM, respectively), while comparable changes were induced only at a higher concentration of HP (=1 mM). These results suggest that HPP(+) has a higher potency to induce plasma membrane damage than HP, and these actions of HPP(+) may partly underlie the pathogenesis of HP-induced extrapyramidal side effects.
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Affiliation(s)
- Tetsuhito Murata
- Department of Neuropsychiatry, University of Fukui, Fukui 910-1193, Japan.
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43
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Kashiwagi K, Williams K, Igarashi K. Anthraquinone polyamines: novel channel blockers of N-methyl-d-aspartate receptors. Amino Acids 2007; 33:299-304. [PMID: 17404801 DOI: 10.1007/s00726-007-0520-5] [Citation(s) in RCA: 6] [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] [Received: 11/02/2006] [Accepted: 02/01/2007] [Indexed: 10/23/2022]
Abstract
Polyamines, in particular spermine, as well as some natural and synthetic polyamine derivatives have been found to be blockers of N-methyl-D-aspartate receptors. We developed novel, polyamine-based channel blockers to analyze the structure of NMDA receptors. Anthraquinone polyamines block NMDA receptors with some selectivity compared to other glutamate receptors. Results using mutant NR1 and NR2 subunits identified amino acid residues that influence blockade by anthraquinone polyamines. The head group (anthraquinone) may be positioned at the selectivity filter/narrowest constriction of the channel and the polyamine tail penetrates this constriction into the inner vestibule below the level of the selectivity filter. The results are consistent with other work showing that NR1 (Asn616) and NR2B (Asn616), but not NR2B (Asn615), make the narrowest constriction of NMDA channel, and that the M3 segments from the two subunits, which form the outer vestibule, are likely staggered relative to each other in the vertical axis of the channel.
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Affiliation(s)
- K Kashiwagi
- Faculty of Pharmacy, Chiba Institute of Science, Choshi, Japan.
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44
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Li X, Grimm ML, Igarashi K, Castagnoli N, Tanko JM. The first calibration of an aminiumyl radical ion clock: why N-cyclopropylanilines may be poor mechanistic probes for single electron transfer. Chem Commun (Camb) 2007:2648-50. [PMID: 17579767 DOI: 10.1039/b702157g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using direct and indirect electrochemical methods, the rate constant for ring opening of the radical cation generated from N-cyclopropyl-N-methylaniline was found to be 4.1 x 10(4) s(-1).
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Affiliation(s)
- Xiangzhong Li
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
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45
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Bissel P, Geherin S, Igarashi K, Gandour RD, Lazar IM, Castagnoli N. Mass spectrometric studies on 4-aryl-1-cyclopropyl-1,2-dihydropyridinyl derivatives: an examination of a novel fragmentation pathway. J Mass Spectrom 2006; 41:1643-53. [PMID: 17136767 DOI: 10.1002/jms.1135] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Examination of the electrospray ionization product ion spectra of 1,2-dihydropyridinyl and 4-aryl-1,2-dihydropyridinyl derivatives bearing a 1-cyclopropyl or 1-trans-2-phenylcyclopropyl group has led to the characterization of unexpected fragment ions. For example, the base peak at m/z 156 present in the product ion spectrum of trans-1-(2-phenylcyclopropyl)-4-phenyl-1,2-dihydropyridine proved not to be the expected 4-phenylpyridinium species but rather the isomeric 3-phenyl-5-azoniafulvenyl species. The results of studies with a series of structural and isotopically labeled analogs require a novel fragmentation pathway to account for the formation of this and related fragment ions. One possible pathway is based on an initial 1,5-sigmatropic shift of a cyclopropylmethylene hydrogen atom that is accompanied by opening of the cyclopropyl ring. The resulting eniminium intermediates then fragment to yield the 5-azoniafulvenyl species.
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Affiliation(s)
- Philippe Bissel
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061-0212, USA
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46
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Abstract
The levels of polyamines (putrescine, spermidine and spermine) and polyamine oxidase in plasma of patients with chronic renal failure were determined. The level of putrescine was increased but the level of spermine was decreased in the plasma of these patients. The patients also had increased plasma polyamine oxidase activity leading to increased degradation of spermine. As acrolein was a major toxic compound produced from spermine by polyamine oxidase, the levels of free and protein-conjugated acrolein in plasma were also measured. Acrolein levels were enhanced in plasma of patients with chronic renal failure. The accumulated acrolein found as protein conjugates was equivalent to 170 microM, which was about 5-fold higher than in plasma of normal subjects. It was found that acrolein is mainly produced by spermine oxidase in plasma. An increase in putrescine, spermine oxidase and acrolein in plasma was observed in all cases such as diabetic nephropathy, chronic glomerulonephritis and nephrosclerosis. After patients with chronic renal failure had undergone hemodialysis, their levels of plasma polyamines, spermine oxidase and acrolein returned towards normal. It is likely that acrolein produced from spermine accumulates in the blood due to decreased excretion into urine and may function as a uremic "toxin".
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Affiliation(s)
- K Igarashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan.
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47
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Abstract
Periodontal ligament (PDL) cells play an essential role in orthodontic tooth movement. We recently reported that clodronate, a non-N-containing bisphosphonate, strongly inhibited tooth movement in rats, and thus could be a useful adjunct for orthodontic treatment. However, it is not clear how clodronate affects the responses of PDL cells to orthodontic force. In this study, we hypothesized that clodronate prevents the mechanical stress-induced production of prostaglandin E(2) (PGE(2)), interleukin-1beta (IL-1beta), and nitric oxide (NO) in human PDL cells. A compressive stimulus caused a striking increase in PGE(2) production, while the responses of IL-1beta and NO were less marked. Clodronate concentration-dependently inhibited the stress-induced production of PGE(2). Clodronate also strongly inhibited stress-induced gene expression for COX-2 and RANKL. These results suggest that the inhibitory effects of clodronate on tooth movement and osteoclasts may be due, at least in part, to the inhibition of COX-2-dependent PGE(2) production and RANKL expression in PDL cells.
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Affiliation(s)
- L Liu
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
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48
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Minato H, Katsuyama Y, Nagasaki T, Irisawa J, Igarashi K. Synthesis of 14C-labelled showdomycin, 3-(β-D-ribofuranosyl)-3-pyrroline-2,5-dione-5-14C. J Labelled Comp Radiopharm 2006. [DOI: 10.1002/jlcr.2580140320] [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: 11/11/2022]
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Kasuya F, Tatsuki T, Ohta M, Kawai Y, Igarashi K. Purification, characterization, and mass spectrometric sequencing of a medium chain acyl-CoA synthetase from mouse liver mitochondria and comparisons with the homologues of rat and bovine. Protein Expr Purif 2006; 47:405-14. [PMID: 16378734 DOI: 10.1016/j.pep.2005.11.006] [Citation(s) in RCA: 13] [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] [Received: 09/27/2005] [Revised: 11/08/2005] [Accepted: 11/09/2005] [Indexed: 11/22/2022]
Abstract
Medium chain acyl-CoA synthetases catalyze the first reaction of amino acid conjugation of many xenobiotic carboxylic acids and fatty acid metabolism. This paper reports studies on purification, characterization, and the partial amino acid sequence of mouse liver enzyme. The medium chain acyl-CoA synthetase was isolated from mouse liver mitochondria. The purified enzyme catalyzes this reaction not only for straight medium chain fatty acids but also for aromatic and arylacetic acids. Maximal activity was found with hexanoic acid. High activities were obtained with benzoic acid having methyl, pentyl, and methoxy groups in the para- or meta-positions of the benzene ring. However, the enzyme was less active with valproic acid and ketoprofen. Salicylic acid exhibited no activity. The medium chain acyl-CoA synthetases from mouse and bovine liver mitochondria were subjected to in-gel tryptic digestion, followed by LC-MS/MS sequence analysis. The amino acid sequence of each tryptic peptide of mouse liver mitochondrial medium chain acyl-CoA synthetase differed from that from bovine liver mitochondria only in one or two amino acids. LC-MS/MS analysis provided the information about these differences in amino acid sequences. In addition, we compared the properties of this protein with the homologues from rat and bovine.
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Affiliation(s)
- Fumiyo Kasuya
- Faculty of Pharmaceutical Sciences, Kobe-Gakuin University, Ikawadani, Nishiku, Japan.
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50
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Kitamura Y, Iida Y, Abe J, Mifune M, Kasuya F, Ohta M, Igarashi K, Saito Y, Saji H. Release of vesicular Zn2+ in a rat transient middle cerebral artery occlusion model. Brain Res Bull 2006; 69:622-5. [PMID: 16716828 DOI: 10.1016/j.brainresbull.2006.03.004] [Citation(s) in RCA: 24] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2005] [Accepted: 03/07/2006] [Indexed: 11/24/2022]
Abstract
In the brain, Zn(2+) is stored in synaptic vesicles of a subgroup of glutamatergic nerve terminals. Although it has been reported that this Zn(2+) is released upon the excitation of nerves in vitro, there has been little study of the release of Zn(2+) during ischemia in vivo. Here, using brain microdialysis, the release of vesicular Zn(2+) was investigated in vivo. When the vesicular Zn(2+) was released into the synaptic cleft by a depolarizing stimulation achieved by perfusion with Ringer's solution containing high K(+) (100mM KCl), a significant increase in the extracellular concentration of Zn(2+) could be detected by microdialysis. Then, we investigated the release of vesicular Zn(2+) in a rat transient middle cerebral artery occlusion model using microdialysis. Consequently, the extracellular Zn(2+) level in the cortex increased within 15 min of the start of occlusion and reached a peak at 30 min, which was about twice the basal level. After 30 min, it declined with time returning to the basal level 15 min after reperfusion, which was performed after 60 min of occlusion. The results suggest that vesicular Zn(2+) would be released into the synaptic cleft during brain ischemia in vivo.
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Affiliation(s)
- Youji Kitamura
- Graduate School of Medicine and Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan
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