1
|
Tochitani K, Tomiyoshi K, Inoue T, Kamisaki F, Matsuki M, Hiramatsu K, Aoki K, Kusaka S, Tamaki S, Sato F, Murata I. Response control of RPLGD for gamma-ray dose measurement using lead filters for BNCT. Appl Radiat Isot 2023; 199:110897. [PMID: 37352647 DOI: 10.1016/j.apradiso.2023.110897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/20/2023] [Accepted: 06/06/2023] [Indexed: 06/25/2023]
Abstract
Boron Neutron Capture Therapy (BNCT) is a cell-selective radiotherapy using a neutron capture reaction of 10B. In recent years, Accelerator Based Neutron Sources (ABNS) are under development instead of nuclear reactors for the next-generation neutron irradiation system for BNCT. However, ABNS as well as nuclear reactor usually generates unavoidable secondary gamma-rays by neutron-nuclear reactions such as capture reaction. In this research, we aimed to develop a separate measurement method of only gamma-rays in a mixed field of neutrons and gamma-rays using a fluorescent glass dosimeter (RPLGD), because most dosimeters have sensitivity to both radiation types. For this purpose, we proposed a lead filter method using two RPLGDs and lead filters. However, this method has a problem that the sensitivity to low energy gamma-rays (∼100 keV) is very small. In order to improve the sensitivity to low energy gamma-rays, we devised a method using a specially shaped lead filter. From theoretical calculations, we have shown that it was possible to estimate the air dose rate of the field where the gamma-ray energy spectrum shape was known for energies up to 10 MeV. In addition, we produced the specially shaped lead filter and experimentally confirmed the validity of the lead filter method using several gamma-ray standard sources and by measurements in a nuclear fuel storage room.
Collapse
Affiliation(s)
- K Tochitani
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Tomiyoshi
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - T Inoue
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - F Kamisaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - M Matsuki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Hiramatsu
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Aoki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Kusaka
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - S Tamaki
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - F Sato
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan
| | - I Murata
- Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0871, Japan.
| |
Collapse
|
2
|
Salahuddin M, Hiramatsu K, Kita K. Dietary carbohydrate influences the colocalization pattern of Glucagon-like Peptide-1 with neurotensin in the chicken ileum. Domest Anim Endocrinol 2022; 79:106693. [PMID: 34973620 DOI: 10.1016/j.domaniend.2021.106693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/14/2021] [Accepted: 11/15/2021] [Indexed: 11/28/2022]
Abstract
Glucagon-like peptide (GLP)-1 colocalizes with neurotensin (NT) in the same enteroendocrine cells (EECs) of the chicken ileum. The present study was designed to clarify the influence of dietary carbohydrate (CHO) on the colocalization pattern of GLP-1 with NT in the chicken distal ileum. Male White Leghorn chickens at 6 weeks of age (n = 15) were divided into three groups, a control and two experimental (low-CHO and CHO-free), with five chickens in each, and fed control or experimental diets for 7 d. Distal ileum was collected from each bird as a tissue sample and subjected to double immunofluorescence staining to detect GLP-1 and NT. Three types of EEC, GLP-1+/NT+, GLP-1+/NT- and GLP-1-/NT+, were demonstrated in the chicken ileum. GLP-1+/NT+ cells in the control group had a spindle-like shape with a long cytoplasmic process, but those in the experimental groups were round and lacked a cytoplasmic process. The ratio of GLP-1+/NT+ cells was significantly decreased in the two experimental groups compared with that in the control group. The ratio of GLP-1+/NT+ cells was significantly lower than those of GLP-1+/NT- and GLP-1-/NT+ cells in the two experimental groups. Most cells that were immunoreactive for GLP-1 and NT antisera lacked signals of proglucagon (PG) and NT precursor (NTP) mRNA in the experimental groups. The number of EECs expressing PG and NTP mRNA signals showed tendencies for decreases with a reduction of dietary CHO level. These findings suggest that dietary CHO could be a significant regulator of the pattern of colocalization pattern of GLP-1 with NT in the chicken ileum.
Collapse
Affiliation(s)
- M Salahuddin
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, Kami-ina, Nagano 399-4598, Japan
| | - K Hiramatsu
- Laboratory of Animal Functional Anatomy (LAFA), Faculty of Agriculture, Shinshu University, Kami-ina, Nagano 399-4598, Japan.
| | - K Kita
- Laboratory of Animal Nutrition, Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan
| |
Collapse
|
3
|
Yokota K, Hinoki A, Hiramatsu K, Amano H, Kawamura M, Kuwatsuka Y, Tainaka T, Shirota C, Sumida W, Makita S, Okamoto M, Takimoto A, Yasui A, Nakagawa Y, Uchida H, Kawakita M. Urinary N 1,N 12-diacetylspermine as a biomarker for pediatric cancer: a case-control study. Pediatr Surg Int 2021; 37:1659-1665. [PMID: 34453590 DOI: 10.1007/s00383-021-04987-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/01/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE Minimally invasive examinations are particularly important in pediatric patients. Although the significance of urinary N1,N12-diacetylspermine (DiAcSpm) as a tumor marker (TM) has been reported in many types of adult cancers, its usefulness in pediatric cancers has not been reported. This may be due to urinary DiAcSpm level variations with age. This study aims to measure the normal levels of urinary DiAcSpm in healthy individuals and investigate its usefulness as a TM in childhood cancer. METHODS Urinary samples were collected from pediatric patients with and without cancer. The urinary DiAcSpm levels were measured, and the values were compared. RESULTS A total of 32 patients with cancer and 405 controls were enrolled in the study. Of the 32 patients, 13 had neuroblastoma, 9 had malignant lymphoma (ML), and 10 had leukemia. In the control group, the urinary DiAcSpm values markedly fluctuated among those with young age, especially infants; meanwhile, the values converged among those aged roughly 10 years and above. The sensitivity of DiAcSpm was significantly different among the three types of cancers: neuroblastoma (30.8%), ML (77.8%), and leukemia (40%). CONCLUSION The urinary DiAcSpm value is a useful TM for both screening and follow-up of ML.
Collapse
Affiliation(s)
- Kazuki Yokota
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Akinari Hinoki
- Department of Rare/Refractory Cancer Analysis Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kyoko Hiramatsu
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hizuru Amano
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Machiko Kawamura
- Department of Hematology, Saitama Cancer Center, Saitama, Japan.,Department of Pediatrics, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Yachiyo Kuwatsuka
- Center for Advanced Medicine and Clinical Research, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahisa Tainaka
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Chiyoe Shirota
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Wataru Sumida
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Satoshi Makita
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Masamune Okamoto
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Aitaro Takimoto
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Akihiro Yasui
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Yoichi Nakagawa
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan
| | - Hiroo Uchida
- Department of Pediatric Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa, Nagoya, 466-8550, Japan.
| | - Masao Kawakita
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| |
Collapse
|
4
|
Moriya SS, Samejima K, Taira H, Hiramatsu K, Kawakita M. ESI-Q-TOF-MS determination of polyamines and related enzyme activity for elucidating cellular polyamine metabolism. Anal Biochem 2020; 607:113831. [PMID: 32739346 DOI: 10.1016/j.ab.2020.113831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/02/2019] [Revised: 02/17/2020] [Accepted: 06/12/2020] [Indexed: 11/28/2022]
Abstract
We developed a new procedure for the comprehensive analysis of metabolites and enzymes involved in polyamine metabolism pathways. The procedure utilizes stable isotope-labeled polyamines and directly and precisely determines labeled products from enzymatic reactions by ESI-Q-TOF-MS. The activity of different enzymes could be determined in essentially the same manner by suitably adjusting the reaction conditions for each individual enzyme. We applied the procedure to extracts of regenerating rat liver and analyzed the changes in polyamine-metabolizing enzymes and polyamine contents during recovery from partial hepatectomy. A general outline of polyamine metabolism and information of polyamine dynamics were obtained. This kind of comprehensive information would be valuable in unifying detailed but fragmentary information obtained through conventional analyses focusing on one or a few enzymes and on a limited aspect of polyamine metabolic pathway.
Collapse
Affiliation(s)
- Shun-Suke Moriya
- Stem Cell Project, Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.
| | - Keijiro Samejima
- Stem Cell Project, Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Hideharu Taira
- Stem Cell Project, Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kyoko Hiramatsu
- Stem Cell Project, Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Masao Kawakita
- Stem Cell Project, Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| |
Collapse
|
5
|
Omiya K, Hiramatsu K, Kato T, Shibata Y, Yoshihara M, Aoba T, Arimoto A, Ito A. Preoperative MRI for predicting pathological changes associated with surgical difficulty during laparoscopic cholecystectomy for acute cholecystitis. BJS Open 2020; 4:1137-1145. [PMID: 32894010 PMCID: PMC7709376 DOI: 10.1002/bjs5.50344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/26/2020] [Accepted: 07/20/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Severe inflammation with necrosis and fibrosis of the gallbladder in acute cholecystitis increases operative difficulty during laparoscopic cholecystectomy. This study aimed to assess the use of preoperative MRI in predicting pathological changes of the gallbladder associated with surgical difficulty. METHODS Patients who underwent both preoperative MRI and early cholecystectomy for acute cholecystitis between 2012 and 2018 were identified retrospectively. On the basis of the layered pattern of the gallbladder wall on MRI, patients were classified into three groups: high signal intensity (HSI), intermediate signal intensity (ISI), and low signal intensity (LSI). The endpoint was the presence of pathological changes of the gallbladder associated with surgical difficulty, such as necrosis, abscess formation and fibrosis. RESULTS Of 229 eligible patients, pathological changes associated with surgical difficulty were found in 17 (27 per cent) of 62 patients in the HSI group, 84 (85 per cent) of 99 patients in the ISI group, and 66 (97 per cent) of 68 patients in the LSI group (P < 0·001). For detecting these changes, intermediate to low signal intensity of the gallbladder wall had a sensitivity of 90 (95 per cent c.i. 84 to 94) per cent, specificity of 73 (60 to 83) per cent and accuracy of 85 (80 to 90) per cent. CONCLUSION Preoperative MRI predicted pathological changes associated with surgical difficulty during laparoscopic cholecystectomy for acute cholecystitis.
Collapse
Affiliation(s)
- K. Omiya
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - K. Hiramatsu
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - T. Kato
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - Y. Shibata
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - M. Yoshihara
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - T. Aoba
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - A. Arimoto
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| | - A. Ito
- Department of General SurgeryToyohashi Municipal Hospital50 Hakken‐Nishi, Aotake‐cho,Toyohashi CityAichi Prefecture440‐8570Japan
| |
Collapse
|
6
|
Ohira T, Ino Y, Nakai Y, Morita H, Kimura A, Kurata Y, Kagawa H, Kimura M, Egashira K, Moriya S, Hiramatsu K, Kawakita M, Kimura Y, Hirano H. Proteomic analysis revealed different responses to hypergravity of soleus and extensor digitorum longus muscles in mice. J Proteomics 2020; 217:103686. [PMID: 32061808 DOI: 10.1016/j.jprot.2020.103686] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 11/22/2019] [Revised: 01/30/2020] [Accepted: 02/12/2020] [Indexed: 01/01/2023]
Abstract
Investigating protein abundance profiles is important to understand the differences in the slow and fast skeletal muscle characteristics. The profiles in soleus (Sol) and extensor digitorum longus (EDL) muscles in mice exposed to 1 g or 3 g for 28 d were compared. The biological implications of the profiles revealed that hypergravity exposure activated a larger number of pathways involved in protein synthesis in Sol. In contrast, the inactivation of signalling pathways involved in oxidative phosphorylation were conspicuous in EDL. These results suggested that the reactivity of molecular pathways in Sol and EDL differed. Additionally, the levels of spermidine synthase and spermidine, an important polyamine for cell growth, increased in both muscles following hypergravity exposure, whereas the level of spermine oxidase (SMOX) increased in EDL alone. The SMOX level was negatively correlated with spermine content, which is involved in muscle atrophy, and was higher in EDL than Sol, even in the 1 g group. These results indicated that the contribution of SMOX to the regulation of spermidine and spermine contents in Sol and EDL differed. However, contrary to expectations, the difference in the SMOX level did not have a significant impact on the growth of these muscles following hypergravity exposure. SIGNIFICANCE: The skeletal muscle-specific protein abundance profiles result in differences in the characteristics of slow and fast skeletal muscles. We investigated differences in the profiles in mouse slow-twitch Sol and fast-twitch EDL muscles following 28-d of 1 g and 3 g exposure by LC-MS/MS analysis and label-free quantitation. A two-step solubilisation of the skeletal muscle proteins increased the coverage of proteins identified by LC-MS/MS analysis. Additionally, this method reduced the complexity of samples more easily than protein or peptide fractionation by SDS-PAGE and offline HPLC while maintaining the high operability of samples and was reproducible. A larger number of hypergravity-responsive proteins as well as a prominent increase in the wet weights was observed in Sol than EDL muscles. The biological implications of the difference in the protein abundance profiles in 1 g and 3 g groups revealed that the reactivity of each molecular pathway in Sol and EDL muscles to hypergravity exposure differed significantly. In addition, we found that the biosynthetic and interconversion pathway of polyamines, essential factors for cell growth and survival in mammals, was responsive to hypergravity exposure; spermidine and spermine contents in Sol and EDL muscles were regulated by different mechanisms even in the 1 g group. However, our results indicated that the difference in the mechanism regulating polyamine contents is unlikely to have a significant effect on the differences in Sol and EDL muscle growth following hypergravity exposure.
Collapse
Affiliation(s)
- Takashi Ohira
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Yoko Ino
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Yusuke Nakai
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Hironobu Morita
- Department of Physiology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Ayuko Kimura
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Yoichi Kurata
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Hiroyuki Kagawa
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Mitsuo Kimura
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Kenji Egashira
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan
| | - Shunsuke Moriya
- Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Kyoko Hiramatsu
- Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Masao Kawakita
- Department of Advanced Research for Biomolecules, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Yayoi Kimura
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan.
| | - Hisashi Hirano
- Advanced Medical Research Center, Yokohama City University, Kanagawa, Japan.
| |
Collapse
|
7
|
Kondo T, Kawachi I, Onizuka Y, Hiramatsu K, Hase M, Yun J, Matta A, Torii S. Efficacy of dimethyl fumarate in Japanese multiple sclerosis patients: interim analysis of randomized, double-blind APEX study and its open-label extension. Mult Scler J Exp Transl Clin 2019; 5:2055217319864974. [PMID: 31391949 PMCID: PMC6669851 DOI: 10.1177/2055217319864974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 06/06/2019] [Accepted: 06/29/2019] [Indexed: 12/23/2022] Open
Abstract
Background Current data for the use of dimethyl fumarate (DMF) in Japanese patients with relapsing-remitting multiple sclerosis (RRMS) is limited. Objectives To assess the efficacy of DMF in Japanese patients with RRMS. Methods The phase 3, multinational APEX study (ClinicalTrials.gov identifier: NCT01838668) consisted of two parts: a 24-week double-blind part where subjects were randomized to receive DMF 240 mg or placebo twice daily in East Asian and Eastern European countries, and an open-label extension part where all subjects received DMF. The primary endpoint was the total number of new gadolinium-enhancing lesions in Weeks 12-24. In this interim analysis, we report efficacy data in the Japanese subgroup (DMF n = 56; placebo n = 58) over 72 weeks, including an extension phase. Results DMF reduced the total number of new gadolinium-enhancing lesions in Weeks 12-24 by 85% versus placebo (p < 0.0001). At Week 24, the annualized relapse rate was also reduced by 48% with DMF, versus placebo. DMF reduced the probability of relapse from Week 8 and was sustained. The number of gadolinium-enhancing lesions was maintained through 72 weeks. Conclusions DMF demonstrated sustained efficacy in this Japanese subgroup. The results were consistent with those observed in studies of DMF enrolling primarily Caucasian patients.
Collapse
Affiliation(s)
- T Kondo
- Department of Neurology, Kansai Medical University Medical Center, Osaka, Japan
| | - I Kawachi
- Department of Neurology, Niigata University Medical & Dental Hospital, Niigata, Japan.,Department of Neurology, Brain Research Institute, Niigata University, Niigata, Japan
| | | | | | - M Hase
- Biogen Japan Ltd., Tokyo, Japan
| | - J Yun
- Biogen Inc., Cambridge, MA, USA
| | - A Matta
- Biogen Inc., Cambridge, MA, USA
| | - S Torii
- Biogen Japan Ltd., Tokyo, Japan
| |
Collapse
|
8
|
Kambara Y, Hiramatsu K, Kato T, Sibata Y, Yoshihara M, Aoba T, Aiba T, Yamaguchi N, Kamiya T. Randomized clinical trial of single skin sterilization with a povidone-iodine applicator versus conventional skin sterilization in abdominal surgery. BJS Open 2019; 3:282-287. [PMID: 31183443 PMCID: PMC6551405 DOI: 10.1002/bjs5.50144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 01/17/2019] [Indexed: 11/25/2022] Open
Abstract
Background The efficacy of widely used povidone–iodine applicators for skin sterilization in abdominal surgery is unclear. The aim of this trial was to evaluate whether sterilization with a povidone–iodine applicator was not inferior to a conventional sterilization method. Methods Patients undergoing elective abdominal surgery were assigned randomly to receive single sterilization with the applicator or conventional sterilization. The primary endpoint was wound infection rate. Secondary endpoints were rate of organ/space surgical‐site infection (SSI), adverse effects of povidone–iodine, amount of povidone–iodine used and total cost of sterilization. Results Of 498 patients eligible for the study between April 2015 and September 2017, 240 were assigned and analysed in the applicator group and 246 in the conventional group. Wound infection was detected in 16 patients (6·7 per cent) in the applicator group and 16 (6·5 per cent) in the conventional group (absolute difference 0·0016 (90 per cent c.i. −0·037 to 0·040) per cent; P = 0·014 for non‐inferiority). There was no difference between the groups in the organ/space SSI rate (11 patients (4·6 per cent) in the applicator group and 16 (6·5 per cent) in the conventional group. Both the amount of povidone–iodine used and the total cost of sterilization were higher in the conventional group than in the applicator group (median 76·7 versus 25 ml respectively, P < 0·001; median €7·0 versus €6·4, P < 0·001). Skin irritation was detected in three patients in the conventional group. Conclusion In abdominal surgery, this povidone–iodine applicator was not inferior to conventional sterilization in terms of the wound infection rate, and it is cheaper. Registration number: UMIN000018231 (http://www.umin.ac.jp/ctr/).
Collapse
Affiliation(s)
- Y Kambara
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan.,Department of Gastrointestinal Surgery Japanese Red Cross Nagoya First Hospital Nagoya Japan
| | - K Hiramatsu
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| | - T Kato
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| | - Y Sibata
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| | - M Yoshihara
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| | - T Aoba
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| | - T Aiba
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan.,Division of Surgical Oncology, Department of Surgery Nagoya University Graduate School of Medicine Nagoya Japan
| | - N Yamaguchi
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan.,Department of Surgery Nagoya Ekisaikai Hospital Nagoya Japan
| | - T Kamiya
- Department of General Surgery Toyohashi Municipal Hospital Toyohashi Japan
| |
Collapse
|
9
|
Takahashi M, Ishikawa D, Sasaki T, Lu YJ, Kuwahara-Arai K, Kamei M, Shibuya T, Osada T, Hiramatsu K, Nagahara A. Faecal freezing preservation period influences colonization ability for faecal microbiota transplantation. J Appl Microbiol 2019; 126:973-984. [PMID: 30489686 DOI: 10.1111/jam.14167] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 08/08/2018] [Revised: 10/25/2018] [Accepted: 11/13/2018] [Indexed: 12/21/2022]
Abstract
AIMS There has been growing interest in faecal microbiota transplantation (FMT) as treatment. Although, frozen donor faeces preserved at -20°C has been widely used for practical advantages, freezing at -20°C can affect bacterial viability. Adequacy evaluation of fresh and frozen faeces as the transplant is necessary for the methodological improvement of FMT. METHODS AND RESULTS The viable bacterial compositions of faecal specimens under fresh and freezing conditions were compared by a microbiome analysis using propidium monoazide (PMA microbiome). In addition, recovery abilities from bacterial reduction by antibiotics were compared between fresh and frozen FMT using a murine model. PMA microbiome results suggested that freezing and freeze-thawing did not significantly affect in vitro faecal bacterial viability. However, the recovery effect from antimicrobial cleansing in frozen FMT was reduced in a freezing time-dependent manner, especially prominent in Actinobacteria and Bacteroidetes phyla. CONCLUSIONS Short-term freezing preservation of faeces exhibited maintenance of enteric colonization ability in frozen FMT in comparison to 1 month -20°C-preservation. SIGNIFICANCE AND IMPACT OF THE STUDY Long-term -20°C-preservation of transplanted faeces can result in instability of the clinical outcome in FMT therapy. The standardization of practical procedures of FMT therapy according to disease types is desirable.
Collapse
Affiliation(s)
- M Takahashi
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - D Ishikawa
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - T Sasaki
- Animal Research Center, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan.,Center of Excellence for Infection Control Science, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Y J Lu
- Center of Excellence for Infection Control Science, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - K Kuwahara-Arai
- Department of Microbiology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - M Kamei
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - T Shibuya
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| | - T Osada
- Department of Gastroenterology, Juntendo University Urayasu Hospital, Urayasu-city, Chiba, Japan
| | - K Hiramatsu
- Center of Excellence for Infection Control Science, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - A Nagahara
- Department of Gastroenterology, Juntendo University School of Medicine, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
10
|
Mori M, Ohashi T, Onizuka Y, Hiramatsu K, Hase M, Yun J, Ling Y, Torii S. Efficacy and safety of delayed-release dimethyl fumarate in treatment-naïve Japanese patients with relapsing-remitting multiple sclerosis: A post-hoc subgroup analysis of the apex study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2241] [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]
|
11
|
Kondo T, Kawachi I, Onizuka Y, Hiramatsu K, Hase M, Yun J, Ling Y, Torii S. Efficacy of delayed-release dimethyl fumarate in Japanese patients with relapsing multiple sclerosis in the placebo-controlled phase 3 apex study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3453] [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]
|
12
|
Ochi H, Niino M, Onizuka Y, Hiramatsu K, Hase M, Yun J, Ling Y, Torii S. Safety of delayed-release dimetyl fumarate in Japanese patients with relapsing multiple sclerosis: Subgroup analysis of the apex Part 1 study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2233] [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]
|
13
|
Mishina T, Aiba T, Hiramatsu K, Shibata Y, Yoshihara M, Aoba T, Yamaguchi N, Kato T. Comparison between dexmedetomidine and midazolam as a sedation agent with local anesthesia in inguinal hernia repair: randomized controlled trial. Hernia 2017; 22:471-478. [PMID: 28965137 DOI: 10.1007/s10029-017-1680-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 09/24/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE In Japan, inguinal hernia repair is widely performed with local anesthesia. The objective of this study was to evaluate safety and efficacy of intravenous dexmedetomidine as a sedation agent with local anesthesia in inguinal hernia repair. METHODS We performed this randomized, single-blind study for 200 patients who were scheduled to undergo inguinal hernia repair with local anesthesia. Patients were randomly divided into two groups (dexmedetomidine group: Group D, midazolam group: Group M). The primary outcome was to evaluate the safety of intravenous dexmedetomidine. Secondary outcomes were to analyze results of operators' surveys and patients' questionnaires and evaluate implementation of conscious sedation. RESULTS Incidence of respiratory depression was significantly higher in Group M than Group D (p = 0.03). Other adverse events examined did not differ significantly. All three operators' questionnaires indicated that results were better in Group D than Group M. More than 70% of patients in both groups were satisfied with the surgery. More than 80% of Group D patients and 74% of Group M patients achieved a state of conscious sedation. CONCLUSION This study demonstrated that intravenous dexmedetomidine during hernia repair with local anesthesia is safe and the results were satisfactory to both operators and patients.
Collapse
Affiliation(s)
- T Mishina
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan. .,Department of Surgery, Ogaki Municipal Hospital, Ogaki, Japan.
| | - T Aiba
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan.,Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Hiramatsu
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - Y Shibata
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - M Yoshihara
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - T Aoba
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - N Yamaguchi
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| | - T Kato
- Department of General Surgery, Toyohashi Municipal Hospital, Toyohashi, Japan
| |
Collapse
|
14
|
Hiramatsu K, Yoshihashi S, Kusaka S, Sato F, Hoashi E, Murata I. Gamma-Ray Dose Measurement with Radio-Photoluminescence Glass Dosimeter in Mixed Radiation Field for BNCT. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201715304009] [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
|
15
|
Tamura Y, Jinzaki M, Ohkuma K, Narimatsu Y, Hashimoto S, Tanimoto A, Hiramatsu K. Visualization of tumor vessels in renal tumors: Comparison between power Doppler ultrasonography and angiography. Acta Radiol 2016; 42:239-43. [PMID: 11259955 DOI: 10.1080/028418501127346576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: To compare the ability of power Doppler ultrasonography (PDUS) with that of renal angiography for assessment of renal tumor vessels. Material and Methods: We performed PDUS and angiography in 52 histologically proven renal parenchymal tumors (50 renal cell carcinomas (RCCs) and 2 oncocytomas), and compared vascularity on PDUS and angiography. The vascularity of PDUS was graded as follows: grade 0 - no recognizable tumor vessel; grade 1 - hypovascular to surrounding renal interlobar arteries; grade 2 - hyper- or isovascular to surrounding renal interlobar arteries. Results: With PDUS, 41 tumors were grade 2 and 11 were grade 1. With angiography, 44 lesions had iso/hypervascular pattern, 6 hypovascular pattern, and 2 were judged to be avascular. Among 44 iso/hypervascular tumors, 41 were grade 2, and 3 were grade 1. These latter 3 were located deeper than 7 cm. Six hypovascular tumors and 2 avascular tumors were grade 1. The 2 avascular tumors were small and hypovascular. The κ-level of agreement was 0.81. Conclusion: There was very good agreement betweeen PDUS and angiography in visualizing renal tumor vessels. PDUS appears appropriate for assessing renal tumor vascularity as compared to angiography in small and hypovascular lesions, but deep location reduced the detectability of tumor vessels with PDUS.
Collapse
Affiliation(s)
- Y Tamura
- Department of Diagnostic Radiology, Keio University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
16
|
|
17
|
Nishimura K, Hiramatsu K, Watanabe T. Dynamics of L cells along the crypt-villous axis in the chicken ileum. Domest Anim Endocrinol 2016; 56:70-4. [PMID: 27131336 DOI: 10.1016/j.domaniend.2016.02.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/26/2016] [Accepted: 02/22/2016] [Indexed: 11/21/2022]
Abstract
The dynamics of L cells along the crypt-villous axis were investigated in the ileum of male White Leghorn chicks (7 d of age, n = 5). Immunohistochemistry was used to detect the expression of glucagon-like peptide (GLP)-1 and an in situ hybridization technique to detect proglucagon messenger RNA (mRNA). Immunocytochemistry using colloidal gold was also applied to quantitatively evaluate the GLP-1 content. The cells expressing a proglucagon mRNA signal were distributed mainly in the crypts and the bottom of the villi but were never found in the upper part of the villi. Most of the cells expressing a proglucagon mRNA signal (97%) were immunoreactive for GLP-1 antiserum. In contrast, GLP-1 immunoreactive cells were distributed from the crypts to the middle part of the villi, and only 55% of them expressed a proglucagon mRNA signal. Quantitative evaluation by immunocytochemistry of GLP-1 using colloidal gold revealed that the GLP-1 content was significantly lower in L cells located in the villous epithelium than that of L cells located in the crypts (P < 0.01). These findings indicate that L cells in the chicken ileum mature and complete GLP-1 production in the crypts. L cells in the villous epithelium secrete GLP-1 but do not synthesize this peptide.
Collapse
Affiliation(s)
- K Nishimura
- Department of Bioscience and Food Production Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Kami-ina, Nagano 399-4598, Japan
| | - K Hiramatsu
- Laboratory of Animal Functional Anatomy (LAFA), Faculty of Agriculture, Shinshu University, Kami-ina, Nagano 399-4598, Japan.
| | - T Watanabe
- Laboratory of Animal Functional Anatomy (LAFA), Faculty of Agriculture, Shinshu University, Kami-ina, Nagano 399-4598, Japan
| |
Collapse
|
18
|
Kamiya T, Uehara K, Nakayama G, Ishigure K, Kobayashi S, Hiramatsu K, Nakayama H, Yamashita K, Sakamoto E, Tojima Y, Kawai S, Kodera Y, Nagino M. Early results of multicenter phase II trial of perioperative oxaliplatin and capecitabine without radiotherapy for high-risk rectal cancer: CORONA I study. Eur J Surg Oncol 2016; 42:829-35. [PMID: 26968228 DOI: 10.1016/j.ejso.2016.02.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 08/07/2015] [Revised: 02/01/2016] [Accepted: 02/11/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUNDS Perioperative introduction of developed chemotherapy into the treatment strategy for locally advanced rectal cancer (LARC) may be a promising option. However, the most prevalent treatment for high-risk LARC remains preoperative chemoradiotherapy (CRT) in Western countries. PATIENTS AND METHODS A phase II trial was undertaken to evaluate safety and efficacy of perioperative XELOX without radiotherapy (RT) for patients with high-risk LARC. Patients received 4 cycles of XELOX before and after surgery, respectively. Primary endpoint was disease-free survival. RESULTS We enrolled 41 patients between June 2012 and April 2014. The completion rate of the preoperative XELOX was 90.3%. Twenty-nine patients (70.7%) could start postoperative XELOX, 15 of these patients (51.7%) completed 4 cycles. Allergic reaction to oxaliplatin was experienced by 5 patients (17.2%) during postoperative XELOX. One patient received additional RT after preoperative XELOX. Consequently, the remaining 40 patients underwent primary resection. Major complications occurred in 6 of 40 patients (15.0%). Pathological complete response (pCR) rate was 12.2%, and good tumor regression was exhibited in 31.7%. N down-staging (cN+ to ypN0) and T down-staging were detected in 56.7% and 52.5%, respectively. Clinical T4 tumor was a predictor of poor pathological response (p < 0.001). CONCLUSIONS We could show the favorable pCR rate after preoperative XELOX alone. However, the T and N down-staging rate was likely to be insufficient. When tumor regression is essential for curative resection, the use of preoperative CRT is likely to be recommended. For patients with massive LN metastasis, the additional Bev to NAC might be a promising option.
Collapse
Affiliation(s)
- T Kamiya
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Uehara
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - G Nakayama
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - K Ishigure
- Department of Surgery, Konan Kosei Hospital, Aichi, Japan
| | - S Kobayashi
- Department of Surgery, Toyota Kosei Hospital, Aichi, Japan
| | - K Hiramatsu
- Department of Surgery, Toyohashi Municipal Hospital, Aichi, Japan
| | - H Nakayama
- Department of Surgery, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - K Yamashita
- Department of Surgery, Toyohashi Medical Center, Aichi, Japan
| | - E Sakamoto
- Department of Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - Y Tojima
- Department of Surgery, Chukyo Hospital, Nagoya, Japan
| | - S Kawai
- Department of Surgery, Tsushima City Hospital, Aichi, Japan
| | - Y Kodera
- Department of Gastroenterological Surgery (Surgery II), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nagino
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| |
Collapse
|
19
|
Takahashi Y, Sakaguchi K, Horio H, Hiramatsu K, Moriya S, Takahashi K, Kawakita M. Urinary N1, N12-diacetylspermine is a non-invasive marker for the diagnosis and prognosis of non-small-cell lung cancer. Br J Cancer 2015; 113:1493-501. [PMID: 26505680 PMCID: PMC4815893 DOI: 10.1038/bjc.2015.349] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 09/05/2015] [Accepted: 09/09/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Early detection of non-small-cell lung cancer (NSCLC) and accurate prognostic risk assessment could improve patient outcome. We examined the significance of urinary N(1), N(12)-diacetylspermine (DiAcSpm) in the detection and prognostic stratification of NSCLC patients. METHODS A DiAcSpm/cutoff ratio (DASr) was established for 260 NSCLC patients, 99 benign lung disease patients, and 140 healthy volunteers, using colloidal gold aggregation methods. The DASr was compared between patients and healthy controls, and the prognostic significance of DASr was examined. RESULTS The median urinary DASr of NSCLC patients was significantly higher than that of healthy controls (0.810 vs 0.534, P<0.001). The DASr was higher in squamous cell carcinoma (SqCC) patients than in adenocarcinoma patients (1.18 vs 0.756, respectively, P=0.039). An increased urinary DASr value was significantly associated with pathological stage, other histological invasive factors and unfavourable outcomes in patients with completely resected NSCLC. Multivariate Cox regression analysis showed that increased urinary DASr was an independent prognostic factor (hazard ratio=4.652, 95% confidence interval (CI), 2.092-10.35; P<0.001). CONCLUSIONS Urinary DASr was significantly increased in NSCLC, especially in SqCC. Urinary DASr was an independent poor prognostic indicator in patients with completely resected NSCLC. The DASr could be a useful biomarker for detecting malignancies and predicting prognosis.
Collapse
Affiliation(s)
- Yusuke Takahashi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo, Japan
- Department of General Thoracic Surgery, Teikyo University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Koji Sakaguchi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo, Japan
- Department of Thoracic Surgery, Nagano Prefectural Suzaka Hospital, Suzaka, Nagano, Japan
| | - Hirotoshi Horio
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo, Japan
| | - Kyoko Hiramatsu
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Shunsuke Moriya
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Keiichi Takahashi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Bunkyo-ku, Tokyo, Japan
| | - Masao Kawakita
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| |
Collapse
|
20
|
Hiramatsu K, Sasaki K, Matsuda M, Hashimoto M, Eguchi T, Tomikawa S, Fujii T, Watanabe G. A case of trichilemmal carcinoma with distant metastases in a kidney transplantation patient. Transplant Proc 2015; 47:155-7. [PMID: 25645796 DOI: 10.1016/j.transproceed.2014.10.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 10/05/2014] [Indexed: 11/28/2022]
Abstract
Transplant recipients receiving immunosuppressants are at a high risk of cancer, especially skin cancer. Trichilemmal carcinoma is comparatively rare compared with other skin cancers. We report here a first case of trichilemmal carcinoma arising in a kidney transplant recipient. A 63-year-old man who had undergone a living donor renal transplantation at the age of 50 years presented with a 15 × 10 mm lesion on his forehead. The pathological diagnosis after resection was trichilemmal carcinoma. Distant metastases involving the lymph nodes, lung, and liver occurred, and the patient died. Given that trichilemmal carcinoma generally has an indolent clinical course and a low metastatic potential, the present case of trichilemmal carcinoma with an aggressive course resulting in distant metastases is rare.
Collapse
Affiliation(s)
- K Hiramatsu
- Department of Digestive Surgery, Hepatopancreatobiliary Surgery Unit, Toranomon Hospital, Tokyo, Japan
| | - K Sasaki
- Department of Digestive Surgery, Hepatopancreatobiliary Surgery Unit, Toranomon Hospital, Tokyo, Japan.
| | - M Matsuda
- Department of Digestive Surgery, Hepatopancreatobiliary Surgery Unit, Toranomon Hospital, Tokyo, Japan
| | - M Hashimoto
- Department of Digestive Surgery, Hepatopancreatobiliary Surgery Unit, Toranomon Hospital, Tokyo, Japan
| | - T Eguchi
- Department of Plastic Surgery, Toranomon Hospital, Tokyo, Japan
| | - S Tomikawa
- Nephrology Center, Toranomon Hospital, Tokyo, Japan
| | - T Fujii
- Department of Pathology, Toranomon Hospital, Tokyo, Japan
| | - G Watanabe
- Department of Digestive Surgery, Hepatopancreatobiliary Surgery Unit, Toranomon Hospital, Tokyo, Japan
| |
Collapse
|
21
|
Takahashi Y, Horio H, Sakaguchi K, Hiramatsu K, Kawakita M. Significant correlation between urinary N(1), N(12)-diacetylspermine and tumor invasiveness in patients with clinical stage IA non-small cell lung cancer. BMC Cancer 2015; 15:65. [PMID: 25884987 PMCID: PMC4391126 DOI: 10.1186/s12885-015-1068-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 07/08/2014] [Accepted: 02/03/2015] [Indexed: 01/15/2023] Open
Abstract
Background To select optimal candidates for limited lung resection, it is necessary to accurately differentiate the non-invasive tumors from other small-sized lung cancer. Urinary N1, N12-diacetylspermine (DiAcSpm) has been reported to be a useful tumor marker for various cancers. We aimed to examine the correlation between preoperative urinary DiAcSpm levels and specific clinicopathological characteristics such as the histological tumor invasiveness in patients with clinical stage IA non-small cell lung cancer (NSCLC). Methods We defined non-invasive tumors as NSCLC showing no vascular invasion, lymphatic permeation, pleural invasion, or lymph node metastasis. Preoperative urine samples were obtained from 516 consecutive patients with NSCLC resected at our institution between April 2008 and January 2013. Urinary DiAcSpm values were determined for all preoperative urine samples using the colloid gold aggregation procedure. Among these patients, 171 patients with clinical stage IA NSCLC met the criteria of our study cohort. Finally, we investigated the correlation between non-invasive tumor and urinary DiAcSpm levels. Results The median urine DiAcSpm for males was 147.2 nmol/g creatinine and 161.8 nmol/g creatinine in females. These median values were set as the cut-off values for each gender. Patients with higher urinary DiAcSpm levels frequently had significantly elevated serum CEA (p = 0.023) and greater lymph node metastasis (p = 0.048), lymphatic permeation (p = 0.046), and vascular invasion (p = 0.010). Compared with patients with non-invasive tumors, patients with invasive tumors had a tumor size >2.0 cm (p = 0.001), serum CEA >5.0 mg/dL (p < 0.001), high urinary DiAcSpm (p = 0.002), and a tumor disappearance rate (TDR) <0.75 (p < 0.001). Multivariate analysis revealed that a tumor size < 2.0 cm (RR = 2.901, 95% CI; 1.372-6.136, p = 0.005), high urinary DiAcSpm (RR = 3.374, 95% CI; 1.547-7.361, p = 0.002), and TDR < 0.75 (RR = 4.673, 95% CI; 2.178-10.027, p < 0.001) were independent predictors for invasive tumors. Conclusions We successfully showed that there was a significant correlation between urinary DiAcSpm levels and pathological tumor invasiveness in patients with clinical stage IA NSCLC. Further research would elucidate the clinical usefulness of DiAcSpm levels as a predictor of tumor invasiveness. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1068-5) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yusuke Takahashi
- Department of Thoracic Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Hon-komagome, Bunkyo-ku, Tokyo, Japan. .,Department of General Thoracic Surgery, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo, Japan.
| | - Hirotoshi Horio
- Department of Thoracic Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Hon-komagome, Bunkyo-ku, Tokyo, Japan.
| | - Koji Sakaguchi
- Department of Thoracic Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Hon-komagome, Bunkyo-ku, Tokyo, Japan. .,Department of Thoracic Surgery, Nagano Prefectural Suzaka Hospital, 1332 Oaza-suzaka, Suzaka, Nagano, Japan.
| | - Kyoko Hiramatsu
- Center for Medical Research Cooperation, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kami-kitazawa, Setagaya-ku, Tokyo, Japan.
| | - Masao Kawakita
- Center for Medical Research Cooperation, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kami-kitazawa, Setagaya-ku, Tokyo, Japan.
| |
Collapse
|
22
|
Hiramatsu K, Katayama Y, Matsuo M, Sasaki T, Morimoto Y, Sekiguchi A, Baba T. Multi-drug-resistant Staphylococcus aureus and future chemotherapy. J Infect Chemother 2014; 20:593-601. [PMID: 25172776 DOI: 10.1016/j.jiac.2014.08.001] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [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: 05/06/2014] [Revised: 07/31/2014] [Accepted: 08/01/2014] [Indexed: 11/17/2022]
Abstract
Staphylococcus (S.) aureus silently stays as our natural flora, and yet sometimes threatens our life as a tenacious pathogen. In addition to its ability to outwit our immune system, its multi-drug resistance phenotype makes it one of the most intractable pathogenic bacteria in the history of antibiotic chemotherapy. It conquered practically all the antibiotics that have been developed since 1940s. In 1961, the first MRSA was found among S. aureus clinical isolates. Then MRSA prevailed throughout the world as a multi-resistant hospital pathogen. In 1997, MRSA strain Mu50 with reduced susceptibility to vancomycin was isolated. Vancomycin-intermediate S. aureus (VISA), so named according to the CLSI criteria, was the product of adaptive mutation of S. aureus against vancomycin that had long been the last resort to MRSA infection. Here, we describe the genetic basis for the remarkable ability of S. aureus to acquire multi-antibiotic resistance, and propose a novel paradigm for future chemotherapy against the multi-resistant pathogens.
Collapse
Affiliation(s)
- K Hiramatsu
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan.
| | - Y Katayama
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| | - M Matsuo
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| | - T Sasaki
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| | - Y Morimoto
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| | - A Sekiguchi
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| | - T Baba
- Research Center for Infection Control Science, Juntendo University, 2-1-1 Hongo, Bunkyo-Ku, Tokyo, Japan
| |
Collapse
|
23
|
Abstract
We report on photoluminescence and optical gain measurements of highly excited GaN crystals grown by hydride vapor physe epitaxy (HVPE). Inelastic scattering processes of excitons dominate the spontaneous emission spectrum under high excitation up to temperatures of 180 K. Towards room temperature phonon-assisted recombination of excitons and free carriers begins to dominate the spectrum. Similar characteristics are observed in temperature-dependent gain measurements.
Collapse
|
24
|
Hiramatsu K, Kawaguchi Y, Shimizu M, Sawaki N, Zheleva T, Davis RF, Tsuda H, Taki W, Kuwano N, Oki K. The Composition Pulling Effect in MOVPE Grown InGaN on GaN and AlGaN and its TEM Characterization. ACTA ACUST UNITED AC 2014. [DOI: 10.1557/s1092578300001320] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
InGaN films have been grown on GaN and AlGaN epitaxial layers by metalorganic vapor phase epitaxy. The “composition pulling effect” during the initial InGaN growth stages has been studied as a function of the lattice mismatch between the InGaN and the underlying epitaxial layer. The crystalline quality of the InGaN is good near the InGaN/GaN interface and the composition is close to that of GaN. However, with increasing InGaN film thickness, the crystal quality deteriorates and the indium mole fraction increases. The composition pulling effect becomes stronger with increasing lattice mismatch. It is suggested that indium atoms are excluded from the InGaN lattice during the early growth stages to reduce the deformation energy from the lattice mismatch. TEM observations of the InGaN/GaN structure reveal that the degradation of the crystalline quality of InGaN films grown on GaN is caused by pit formation which arises from edge dislocations propagating through the InGaN film from the underlying GaN.
Collapse
|
25
|
Takeuchi T, Shinmura Y, Nakajima R, Hiramatsu K, Kubo T, Kimoto A, Kuroki A, Igarashi A, Tango T, Tanaka Y. FRI0280 Impact of Disease Duration before Starting Adalimumab Treatment on Work Productivity in Japanese Patients with Rheumatoid Arthritis; Analysis of 24-Weeks Data from the Anouveau Study. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
26
|
Matsuo K, Yoshino K, Nishimura M, Hiramatsu K, Banzai C, Sheridan T, Hasegawa K, Shiki Y, Roman L, Sood A. Impact of lymphovascular space invasion (LVSI) on survival of stage I epithelial ovarian cancer. Gynecol Oncol 2014. [DOI: 10.1016/j.ygyno.2014.03.227] [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]
|
27
|
Ono A, Okada F, Takata S, Hiramatsu K, Ando Y, Nakayama T, Maeda T, Mori H. A comparative study of thin-section CT findings between seasonal influenza virus pneumonia and Streptococcus pneumoniae pneumonia. Br J Radiol 2014; 87:20140051. [PMID: 24834476 DOI: 10.1259/bjr.20140051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVE To compare the pulmonary thin-section CT findings in patients with seasonal influenza virus pneumonia with Streptococcus pneumoniae pneumonia. METHODS The study group included 30 patients (20 males and 10 females; age range, 20-91 years; mean age, 55.9 years) with seasonal influenza virus pneumonia and 71 patients (47 males and 24 females; age range, 27-92 years; mean age, 67.5 years) with S. pneumoniae pneumonia. RESULTS The proportion of community-acquired infection was significantly higher in patients with influenza virus pneumonia than with S. pneumoniae pneumonia (p = 0.001). CT findings of ground-glass attenuation (GGA) (p = 0.012) and crazy-paving appearance (p = 0.03) were significantly more frequent in patients with influenza virus pneumonia than with S. pneumoniae pneumonia. Conversely, consolidation (p < 0.001), mucoid impaction (p < 0.001), centrilobular nodules (p = 0.04) and pleural effusion (p = 0.003) were significantly more frequent in patients with S. pneumoniae pneumonia than in those with influenza virus pneumonia. CONCLUSION Pulmonary thin-section CT findings, such as consolidation and mucoid impaction may be useful in distinguishing between seasonal influenza virus pneumonia and S. pneumoniae pneumonia. ADVANCES IN KNOWLEDGE (1) Distinguishing seasonal influenza virus pneumonia with S. pneumoniae pneumonia is important. (2) The CT findings of GGA and crazy-paving appearance were more frequently found in patients with influenza virus pneumonia than in patients with S. pneumoniae pneumonia, whereas consolidation, mucoid impaction, centrilobular nodules and pleural effusion were more frequently found in patients with S. pneumoniae pneumonia.
Collapse
Affiliation(s)
- A Ono
- Department of Radiology, Oita University Faculty of Medicine, Oita, Japan
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Moriya SS, Hiramatsu K, Kimura E, Matsumoto K, Kawakita M. Construction of an immunochromatographic determination system for N¹,N¹²-diacetylspermine. J Clin Lab Anal 2014; 28:452-60. [PMID: 24659188 DOI: 10.1002/jcla.21709] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 10/02/2013] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND N(1),N(12)-diacetylspermine (DiAcSpm) is a recently identified tumor marker. Its concentration increases in the urine of cancer patients at early clinical stages. To utilize this characteristic feature and thus contribute to the early detection of cancer, we developed an immunochromatographic determination system for DiAcSpm. METHODS We examined the factors that affect the performance and stability of our determination system, including antibody selection and the conditions for the formation of stably dispersed antibody-coated gold nanoparticles. We then tested the performance of the system by determining the DiAcSpm concentration in human urine samples. RESULTS We constructed an immunochromatographic strip using anti-DiAcSpm antibody-coated gold nanoparticles in the conjugate pad and an acetylspermine-protein conjugate (a DiAcSpm mimic) immobilized on the analyzing membrane. The use of the immunochromatographic strip and an immunochromato-reader allowed for the quantitative determination of DiAcSpm in the range of 20 to 700 nM. The analytical values obtained by this method were well correlated with those determined by a colloidal gold aggregation procedure using an automatic biochemical analyzer. The immunochromatographic strip was stable for at least 8 weeks at 50°C. CONCLUSIONS A competitive immunochromatographic device for DiAcSpm determination was developed in this study. This simple device will contribute to increasing the opportunities for early cancer detection and timely care.
Collapse
Affiliation(s)
- Shun-suke Moriya
- Translational Medical Research Center, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | | | | | | | | |
Collapse
|
29
|
Moriya SS, Terayama N, Hiramatsu K, Kawakita M, Kiryu T, Kawanishi T, Yasui E, Nagumo S. Synthesis of 1-(4-aminobutyl)-2-iminoimidazolidin-4-one aimed at preparation of a creatinine-specific antibody. Chem Pharm Bull (Tokyo) 2014; 62:350-3. [PMID: 24499923 DOI: 10.1248/cpb.c13-00960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
For the purpose of obtaining a creatinine-specific antibody, a creatinine derivative with 4-aminobutyl, which was served as a linker for preparing the creatinine-bovine serum albumin (BSA) conjugate, was synthesized from 4-benzylaminobutan-1-ol in 8 steps. Production of anti-creatinine antibodies was observed in two rabbits using the creatinine-BSA conjugate, although their titer was rather low.
Collapse
Affiliation(s)
- Shun-suke Moriya
- Translational Medical Research Center, Tokyo Metropolitan Institute of Medical Science
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Moriya SS, Miura T, Takao K, Sugita Y, Samejima K, Hiramatsu K, Kawakita M. Development of irreversible inactivators of spermine oxidase and N1-acetylpolyamine oxidase. Biol Pharm Bull 2014; 37:475-80. [PMID: 24583866 DOI: 10.1248/bpb.b13-00913] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three functional groups (2-propenyl, 2-propynyl, and 2,3-butadienyl) were introduced onto one of the terminal amino groups of spermidine. Of the six compounds synthesized, N-(3-aminopropyl)-N'-2,3-butadienyl-1,4-butanediamine (N(8)-butadienyl Spd) and N-[3-(2,3-butadienylamino)propyl]-1,4-butanediamine (N(1)-butadienyl Spd) irreversibly inactivated human spermine oxidase (SMO) and N(1)-acetylpolyamine oxidase (APAO). Interestingly, N(8)-butadienyl Spd inactivated SMO far more potently than N,N'-di-2,3-butadienyl-1,4-butanediamine (MDL 72527).
Collapse
Affiliation(s)
- Shun-suke Moriya
- Translational Medical Research Center, Tokyo Metropolitan Institute of Medical Science
| | | | | | | | | | | | | |
Collapse
|
31
|
Hiramatsu K, Sakaguchi K, Fujie N, Saitoh F, Takahama E, Moriya SS, Iwasaki K, Sakaguchi M, Takahashi KI, Kawaikta M. Excretion of N1, N12-diacetylspermine in the urine of healthy individuals. Ann Clin Biochem 2013; 51:459-67. [DOI: 10.1177/0004563213496978] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Urinary N 1 ,N12-diacetylspermine (DiAcSpm) is a novel tumour marker that can be used to detect early cancers. In this study, we examined whether spot urine samples could represent the daily excretion of DiAcSpm after creatinine normalization and which factors should be taken into account in determining reference values for this biomarker. Methods We collected the following urine samples: (1) samples from seven healthy volunteers collected on each day of two 2-day sessions to examine the circadian variation of DiAcSpm excretion; (2) samples from 3952 male and 1782 female volunteers to estimate the DiAcSpm concentrations in apparently healthy adults and (3) samples from 16 female volunteers collected every morning over a 3-month period to examine the menstruation-related variation in DiAcSpm excretion. The DiAcSpm concentrations were determined by enzyme-linked immunosorbent assay or a colloidal gold aggregation procedure using DiAcSpm-specific antibodies. Results (1) The circadian variation of DiAcSpm in the urine was greatly diminished after creatinine normalization. (2) DiAcSpm was higher in females than in males, and the creatinine-normalized medians (95th percentile) of the urinary DiAcSpm concentrations were 149 (305) and 100 (192) nmol/g creatinine for females and males, respectively. (3) The mean concentrations of urinary DiAcSpm were lower after menstruation than before menstruation by approximately 30 nmol/g creatinine. Conclusion Spot urine samples obtained at any time of a day may be used to estimate the daily excretion of DiAcSpm in nmol DiAcSpm per gram creatinine. Sex, age and menstrual condition should be considered when determining the reference values for urinary DiAcSpm.
Collapse
Affiliation(s)
- Kyoko Hiramatsu
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
| | - Kouji Sakaguchi
- Department of Thoracic Surgery, Nagano Prefectural Suzaka Hospital, Suzaka, Japan
| | - Nana Fujie
- Department of Applied Chemistry, Faculty of Engineering, Kogakuin University, Hachiouji, Japan
| | - Fumie Saitoh
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
| | - Emi Takahama
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
| | - Shun-suke Moriya
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
| | - Kaori Iwasaki
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
| | - Masayoshi Sakaguchi
- Department of Applied Chemistry, Faculty of Engineering, Kogakuin University, Hachiouji, Japan
| | - Kei-ichi Takahashi
- Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
| | - Masao Kawaikta
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Japan
- Department of Applied Chemistry, Faculty of Engineering, Kogakuin University, Hachiouji, Japan
| |
Collapse
|
32
|
Hiramatsu K. KS6-2 Molecular evolution of MRSA and VISA. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70190-0] [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: 10/26/2022]
|
33
|
Lulitanond A, Ito T, Li S, Han X, Ma X, Engchanil C, Chanawong A, Wilailackana C, Jiwakanon N, Hiramatsu K. P81 Identification of a variant of type IX SCCmec in ST9 MRSA strains isolated in Thailand. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70326-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
34
|
Han X, Ito T, Uehara Y, Zhang M, Hiramatsu K. P39 Characterization of SCCmec elements that carry ccrA3 and ccrB3 genes identified in Staphylococcus epidermidis. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70284-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: 11/27/2022]
|
35
|
Monir MM, Hiramatsu K, Yamasaki A, Nishimura K, Watanabe T. The influence of restricted feeding on glucagon-like peptide-1 (GLP-1)-containing cells in the chicken small intestine. Anat Histol Embryol 2013; 43:153-8. [PMID: 23651280 DOI: 10.1111/ahe.12062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 03/01/2013] [Indexed: 11/27/2022]
Abstract
The influence of restricted feeding on the distribution of glucagon-like peptide-1 (GLP-1)-containing endocrine cells in the chicken small intestine was investigated using immunohistochemical and morphometrical techniques. This study demonstrated that the restricted feeding had an influence on the activity of GLP-1-immunoreactive cells in the chicken small intestine. There were differences in the localization and the frequency of occurrence of GLP-1-immunoreactive cells in the small intestine between control and restricted groups, especially 25% feed supply group provided with 25% of the intake during the adapting period. GLP-1-immunoreactive cells in the control chickens were mainly located in epithelium from crypts to the lower part of intestinal villi. Those in restricted groups, however, tended to be located from crypts to the middle part of intestinal villi. The frequency of occurrence of GLP-1-immunoreactive cells was lowest in the control group, medium in 50% feed supply group and highest in 25% feed supply group at each intestinal region examined in this study, that is, increased with the advancement of restricting the amount of feed supply. These data show that the quantity of food intake is one of signals that have an influence on the secretion of GLP-1 from L cells in the chicken small intestine.
Collapse
Affiliation(s)
- M M Monir
- Department of Bioscience and Food Production Science, Interdisciplinary Graduate School of Science and Technology, Shinshu University, Minami-minowa 8304, Kami-ina, Nagano, 399-4598, Japan
| | | | | | | | | |
Collapse
|
36
|
Okada F, Ono A, Ando Y, Nakayama T, Ishii H, Hiramatsu K, Sato H, Kira A, Otabe M, Mori H. High-resolution CT findings in Streptococcus milleri pulmonary infection. Clin Radiol 2013; 68:e331-7. [PMID: 23518496 DOI: 10.1016/j.crad.2013.01.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/10/2013] [Accepted: 01/14/2013] [Indexed: 12/23/2022]
Abstract
AIM To assess pulmonary high-resolution computed tomography (CT) findings in patients with acute Streptococcus milleri pulmonary infection. MATERIALS AND METHODS Sixty consecutive patients with acute S. milleri pneumonia who had undergone high-resolution CT chest examinations between January 2004 and March 2010 were retrospectively identified. Twenty-seven patients with concurrent infections were excluded. The final study group comprised 33 patients (25 men, 8 women; aged 20-88 years, mean 63.1 years) with S. milleri infection. The patients' clinical findings were assessed. Parenchymal abnormalities, enlarged lymph nodes, and pleural effusion were evaluated on high-resolution CT. RESULTS Underlying conditions included malignancy (n = 15), a smoking habit (n = 11), and diabetes mellitus (n = 8). CT images of all patients showed abnormal findings, including ground-glass opacity (n = 24), bronchial wall thickening (n = 23), consolidation (n = 17), and cavities (n = 7). Pleural effusion was found in 18 patients, and complex pleural effusions were found in seven patients. CONCLUSION Pulmonary infection caused by S. milleri was observed mostly in male patients with underlying conditions such as malignancy or a smoking habit. The CT findings in patients with S. milleri consisted mainly of ground-glass opacity, bronchial wall thickening, pleural effusions, and cavities.
Collapse
Affiliation(s)
- F Okada
- Department of Radiology, Oita University, Faculty of Medicine, Oita, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Moriya S, Iwasaki K, Samejima K, Takao K, Kohda K, Hiramatsu K, Kawakita M. A mass spectrometric method to determine activities of enzymes involved in polyamine catabolism. Anal Chim Acta 2012; 748:45-52. [PMID: 23021806 DOI: 10.1016/j.aca.2012.08.031] [Citation(s) in RCA: 8] [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: 08/09/2012] [Accepted: 08/20/2012] [Indexed: 11/23/2022]
Abstract
An analytical method for the determination of three polyamines (putrescine, spermidine, and spermine) and five acetylpolyamines [N(1)-acetylspermidine (N(1)AcSpd), N(8)-acetylspermidine (N(8)AcSpd), N(1)-acetylspermine, N(1),N(8)-diacetylspermidine, and N(1),N(12)-diacetylspermine] involved in the polyamine catabolic pathway has been developed using a hybrid tandem mass spectrometer. Heptafluorobutyryl (HFB) derivatives of these compounds and respective internal standards labeled with stable isotopes were analyzed simultaneously by TOF MS, based on peak areas appearing at appropriate m/z values. The isomers, N(1)AcSpd and N(8)AcSpd were determined from their fragment ions, the acetylamidopropyl and acetylamidobutyl groups, respectively, using MS/MS with (13)C(2)-N(1)AcSpd and (13)C(2)-N(8)AcSpd which have the (13)C(2)-acetyl group as an internal standard. The TOF MS method was successfully applied to measure the activity of enzymes involved in polyamine catabolic pathways, namely N(1)-acetylpolyamine oxidase (APAO), spermine oxidase (SMO), and spermidine/spermine N(1)-acetyltransferase (SSAT). The following natural substrates and products labeled with stable isotopes considering the application to biological samples were identified; for APAO, [4,9,12-(15)N(3)]-N(1)-acetylspermine and [1,4,8-(15)N(3)]spermidine ((15)N(3)-Spd), respectively; for SMO, [1,4,8,12-(15)N(4)]spermine and (15)N(3)-Spd, respectively; and for SSAT, (15)N(3)-Spd and [1,4,8-(15)N(3)]-N(1)-acetylspermidine, respectively.
Collapse
Affiliation(s)
- Shunsuke Moriya
- Department of Molecular Medicine, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kami-kitazawa, Tokyo 156-8506, Japan
| | | | | | | | | | | | | |
Collapse
|
38
|
Hiramatsu K, Sakata H, Horita Y, Orita N, Kida A, Mizukami A, Miyazawa M, Hirai S, Shimatani A, Matsuda K, Matsuda M, Ogino H, Fujinaga H, Terada I, Shimizu K, Uchiyama A, Ishizawa S, Abo H, Demachi H, Noda Y. Mesenteric phlebosclerosis associated with long-term oral intake of geniposide, an ingredient of herbal medicine. Aliment Pharmacol Ther 2012; 36:575-86. [PMID: 22817400 DOI: 10.1111/j.1365-2036.2012.05221.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [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] [Received: 06/23/2012] [Revised: 06/27/2012] [Accepted: 06/29/2012] [Indexed: 01/13/2023]
Abstract
BACKGROUND Idiopathic mesenteric phlebosclerosis (IMP) is a rare disease, characterised by thickening of the wall of the right hemicolon with calcification of mesenteric veins. However, the aetiology remains unknown. AIM To investigate the possible association of herbal medicines with IMP. METHOD The clinical data of four of our own patients were collected. Furthermore, we searched for previous reports about similar patients with detailed descriptions of herbal prescriptions that they had taken. We compared herbal ingredients to identify the toxic agent as a possible aetiological factor. RESULTS Clinical data on a total of 25 patients were summarised. Mean age was 61.8 years and there was female predominance (6 men and 19 women). The used Kampo prescription, the number of cases, and the mean duration of use were as follows: kamisyoyosan in 12 cases for 12.8 years, inshin-iseihaito in 5 cases for 13.4 years, orengedokuto in 4 cases for 14.3 years, inchinkoto in 1 case for 20 years, kamikihitou in 1 case for 19 years, seijobofuto in 1 case for 10 years and gorinsan in 1 case for an unknown duration. Only one ingredient, sansisi, was common to the herbal medicines of all 25 patients. This crude drug called geniposide in English is a major constituent of the Gardenia fruits. CONCLUSION The long-term use of geniposide in herbal medicines appears to be associated with mesenteric phlebosclerosis.
Collapse
Affiliation(s)
- K Hiramatsu
- Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Iwata A, Shirai R, Ishii H, Kushima H, Otani S, Hashinaga K, Umeki K, Kishi K, Tokimatsu I, Hiramatsu K, Kadota J. Inhibitory effect of statins on inflammatory cytokine production from human bronchial epithelial cells. Clin Exp Immunol 2012; 168:234-40. [PMID: 22471285 DOI: 10.1111/j.1365-2249.2012.04564.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Statins are 3-hydroxy-3-methylglutaryl-co-enzyme A reductase inhibitors of cholesterol biosynthesis, and have been reported to exert pleiotropic effects on cellular signalling and cellular functions involved in inflammation. Recent reports have demonstrated that previous statin therapy reduced the risk of pneumonia or increased survival in patients with community-acquired pneumonia. However, the precise mechanisms responsible for these effects are unclear. In the present study, we examined the effects of statins on cytokine production from lipopolysaccharide (LPS)-stimulated human bronchial epithelial cells (BEAS-2B). Interleukin (IL)-6 and IL-8 mRNA expression and protein secretion in LPS-stimulated cells were inhibited significantly by the lipophilic statin pitavastatin and the hydrophilic statin pravastatin. As these inhibitory effects of statin were negated by adding mevalonate, the anti-inflammatory effects of statins appear to be exerted via the mevalonic cascade. In addition, the activation levels of Ras homologue gene family A (RhoA) in BEAS-2B cells cultured with pitavastatin were significantly lower than those without the statin. These results suggest that statins have anti-inflammatory effects by reducing cytokine production through inhibition of the mevalonic cascade followed by RhoA activation in the lung.
Collapse
Affiliation(s)
- A Iwata
- Internal Medicine II, Oita University Faculty of Medicine, Oita, Japan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Lulitanond A, Ito T, Li S, Han X, Ma X, Engchanil C, Jiwakanon N, Chanawong A, Wilailuckana C, Hiramatsu K. SCCmec type IX in a community-acquired methicillin-resistant Staphylococcus aureus isolate: first report in a patient from Thailand. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.839] [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] Open
|
41
|
Uehara K, Ishiguro S, Hiramatsu K, Nishio H, Takeuchi E, Takahari D, Yoshioka Y, Takahashi Y, Ebata T, Yoshimura K, Muro K, Nagino M. Conversion Chemotherapy Using Cetuximab plus FOLFIRI Followed by Bevacizumab plus mFOLFOX6 in Patients with Unresectable Liver Metastases from Colorectal Cancer. Jpn J Clin Oncol 2011; 41:1229-32. [DOI: 10.1093/jjco/hyr115] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
42
|
Zhang M, O’Donoghue M, Ito T, Hiramatsu K, Boost M. Prevalence of antiseptic-resistance genes in Staphylococcus aureus and coagulase-negative staphylococci colonising nurses and the general population in Hong Kong. J Hosp Infect 2011; 78:113-7. [DOI: 10.1016/j.jhin.2011.02.018] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 02/25/2011] [Indexed: 11/26/2022]
|
43
|
Hiramatsu K, Matsushima H, Shibata T, Sawaki N, Tadatomo K, Okagawa H, Ohuchi Y, Honda Y, Matsue T. Selective Area Growth of GaN by MOVPE and HVPE. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-482-257] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractRecent successful results on the selective area growth (SAG) of GaN that has been done by MOVPE and HVPE are shown. The SAG were carried out on MOVPE-grown GaN (0001) / sapphire substrates with lined or dotted SiO2 masks. Sub-micron GaN dot and line structures are fabricated by the SAG in MOVPE, so that smoothly overgrown GaN layers are successfully realized using the epitaxially lateral overgrowth (ELO) technique. The ELO structures are confirmed to be good quality GaN single crystal with a smooth surface, no grain boundaries, and low-dislocation densities. In addition, thick GaN bulk single crystals without any cracks are grown by the SAG in HVPE. Crystalline and optical properties of the GaN bulk are much improved. The reduction in the thermal strain due to the growth on the limited area as well as the ELO are found to be effective to reduce crystalline defects of the GaN bulk single crystals.
Collapse
|
44
|
Eckey L, Hoffmann A, Thurian P, Broser I, Meyer BK, Hiramatsu K. Fine Structure And Magnetooptics Of Excitonic Levels In Wurtzite GaN. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-482-555] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractWe present a comprehensive study of the direct photoluminescence from excitonic states in GaN using polarization-dependent and magnetooptical measurements in fields up to 15 T. We measure and identify fine-structure splittings in the states n=l and n=2 of the A-exciton. The splitting between the energy levels of longitudinal and transverse states in the A-exciton is 0.96 meV. Emission from the spin triplet exciton in the state n=l is observed. We also identify emissions from three sublevels of the state n=2 of the A-exciton. From the analysis of our data we obtain the effective-mass parameters of electrons and holes, g-values and the Rydberg energy of the A-exciton.
Collapse
|
45
|
Hacke P, Miyoshi H, Hiramatsu K, Okumura H, Yoshida S, Okushi H. Observation of Midgap States in GaN with Optical-Isothermal Capacitance Transient Spectroscopy. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-449-549] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
ABSTRACTOptical-isothermal capacitance transient spectroscopy (O-ICTS) was used to distinguish the deep levels which occur in unintentionally doped n-type GaN by means of their characteristic optical cross section. GaN grown by metalorganic vapor phase epitaxy (MOVPE) and hydride vapor phase epitaxy (HVPE) were compared. Correspondence between optical and thermal emission characteristics of previously discovered levels, E2 (∼Ec-0.55 eV) and E4 (∼EC-1.0 eV), were clearly determined by observing their sequential appearance in the ICTS spectra. Whether by thermal or optical stimulation, the emission from E4 was found to be broad in nature; it is consequently believed to involve a defect. The total measured concentration of deep levels, including a prominent level which photoionizes in the range 2.5 to 3.0 eV below the conduction band, is greater in the GaN grown by MOVPE than by HVPE that was tested.
Collapse
|
46
|
Kazuki Y, Hoshiya H, Takiguchi M, Abe S, Iida Y, Osaki M, Katoh M, Hiratsuka M, Shirayoshi Y, Hiramatsu K, Ueno E, Kajitani N, Yoshino T, Kazuki K, Ishihara C, Takehara S, Tsuji S, Ejima F, Toyoda A, Sakaki Y, Larionov V, Kouprina N, Oshimura M. Refined human artificial chromosome vectors for gene therapy and animal transgenesis. Gene Ther 2010; 18:384-93. [PMID: 21085194 PMCID: PMC3125098 DOI: 10.1038/gt.2010.147] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Human artificial chromosomes (HACs) have several advantages as gene therapy vectors, including stable episomal maintenance, and the ability to carry large gene inserts. We previously developed HAC vectors from the normal human chromosomes using a chromosome engineering technique. However, endogenous genes were remained in these HACs, limiting their therapeutic applications. In this study, we refined a HAC vector without endogenous genes from human chromosome 21 in homologous recombination-proficient chicken DT40 cells. The HAC was physically characterized using a transformation-associated recombination (TAR) cloning strategy followed by sequencing of TAR-bacterial artificial chromosome clones. No endogenous genes were remained in the HAC. We demonstrated that any desired gene can be cloned into the HAC using the Cre-loxP system in Chinese hamster ovary cells, or a homologous recombination system in DT40 cells. The HAC can be efficiently transferred to other type of cells including mouse ES cells via microcell-mediated chromosome transfer. The transferred HAC was stably maintained in vitro and in vivo. Furthermore, tumor cells containing a HAC carrying the suicide gene, herpes simplex virus thymidine kinase (HSV-TK), were selectively killed by ganciclovir in vitro and in vivo. Thus, this novel HAC vector may be useful not only for gene and cell therapy, but also for animal transgenesis.
Collapse
Affiliation(s)
- Y Kazuki
- Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science, Tottori University, Tottori, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Kawakita M, Hiramatsu K, Takahashi KI. [Urinary diacetylspermine]. Nihon Rinsho 2010; 68 Suppl 7:793-795. [PMID: 20960874] [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]
Affiliation(s)
- Masao Kawakita
- Tumor Therapy Project, Tokyo Metropolitan Institute of Medical Science
| | | | | |
Collapse
|
48
|
Samejima K, Hiramatsu K, Takahashi K, Kawakita M, Kobayashi M, Tsumoto H, Kohda K. Identification and determination of urinary acetylpolyamines in cancer patients by electrospray ionization and time-of-flight mass spectrometry. Anal Biochem 2010; 401:22-9. [PMID: 20178772 DOI: 10.1016/j.ab.2010.02.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2009] [Revised: 02/01/2010] [Accepted: 02/17/2010] [Indexed: 11/29/2022]
Abstract
A method for the quantification of acetylpolyamines, N(1),N(12)-diacetylspermine (DiAcSpm), monoacetylspermidine (AcSpd), and N(1),N(8)-diacetylspermidine (DiAcSpd), identifying each compound simultaneously, was developed with the goal of evaluating these acetylpolyamines as potential biomarkers of cancer. The method consists of prepurification of acetylpolyamines in urine with commercially available cartridges and derivatization with heptafluorobutyric (HFB) anhydride. HFB derivatives of acetylpolyamines were determined simultaneously using (15)N-labeled acetylpolyamines as internal standards by electrospray ionization and time-of-flight mass spectrometry (ESI-TOF MS). After the method was validated, the urinary acetylpolyamines of 38 cancer patients were quantified with this method. A comparison of the concentrations of DiAcSpm with those measured by a colloidal gold aggregation method demonstrated a correlation coefficient of 0.996, showing that the two methods were equally satisfactory. Analysis of the correlation between DiAcSpd or AcSpd and DiAcSpm, performed for the first time, indicated the usefulness of DiAcSpm as a urinary biomarker of cancer. During the course of this work, two simple methods for the preparation of alpha,omega-diacetylpolyamines were developed, and a possibility to separate and determine the concentrations of the two isomers, N(1)-acetylspermidine and N(8)-acetylspermidine in AcSpd, was shown by tandem mass spectrometry (MS/MS).
Collapse
Affiliation(s)
- Keijiro Samejima
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo, Tokyo 202-8585, Japan.
| | | | | | | | | | | | | |
Collapse
|
49
|
Berglund C, Ito T, Ma XX, Ikeda M, Watanabe S, Soderquist B, Hiramatsu K. Genetic diversity of methicillin-resistant Staphylococcus aureus carrying type IV SCCmec in Orebro County and the western region of Sweden. J Antimicrob Chemother 2008; 63:32-41. [DOI: 10.1093/jac/dkn435] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
50
|
Sakaguchi K, Hiramatsu K, Horio H, Yamamoto M, Takahashi K, Kawakita M. N1,N12-Diacetylspermine as a tumor marker for non-small cell lung cancers (NSCLC). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.11089] [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: 11/20/2022] Open
|