1
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Takei S, Teramoto K, Fujimura J, Fujiwara M, Suzuki M, Fukui Y, Sekiguchi Y, Kawakami T, Chonan M, Wakita M, Horiuchi Y, Miida T, Naito T, Kirikae T, Tada T, Tabe Y. Isolation and identification of Wickerhamiella tropicalis from blood culture by MALDI-MS. Front Cell Infect Microbiol 2024; 14:1361432. [PMID: 38510957 PMCID: PMC10953818 DOI: 10.3389/fcimb.2024.1361432] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/20/2024] [Indexed: 03/22/2024] Open
Abstract
Wickerhamiella is a genus of budding yeast that is mainly isolated from environmental samples, and 40 species have been detected. The yeast isolated from human clinical samples usually only contain three species: W. infanticola, W. pararugosa and W. sorbophila. In this study, we isolated W. tropicalis from a blood sample of a six-year-old female with a history of B-cell precursor lymphoblastic leukemia in Japan in 2022. Though the strain was morphologically identified as Candida species by routine microbiological examinations, it was subsequently identified as W. tropicalis by sequencing the internal transcribed spacer (ITS) of ribosomal DNA (rDNA). The isolate had amino acid substitutions in ERG11 and FKS1 associated with azole and echinocandin resistance, respectively, in Candida species and showed intermediate-resistant to fluconazole and micafungin. The patient was successfully treated with micafungin. Furthermore, matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) detected three novel peaks that are specific for W. tropicalis, indicating that MALDI-MS analysis is useful for rapid detection of Wickerhamiella species in routine microbiological examinations.
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Affiliation(s)
- Satomi Takei
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kanae Teramoto
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Analytical & Measurement Instruments Division, Shimadzu Corporation, Kyoto, Japan
| | - Junya Fujimura
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Megumi Fujiwara
- Department of Pediatrics, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mai Suzuki
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yukiko Fukui
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuji Sekiguchi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Takaaki Kawakami
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Masayoshi Chonan
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Mitsuru Wakita
- Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan
| | - Yuki Horiuchi
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Miida
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Toshio Naito
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of General Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Teruo Kirikae
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Microbiome Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tatsuya Tada
- Department of Microbiology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Tabe
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of MALDI-TOF MS Practical Application Research, Juntendo University Graduate School of Medicine, Tokyo, Japan
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2
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Sekiguchi Y, Teramoto K, Tourlousse DM, Ohashi A, Hamajima M, Miura D, Yamada Y, Iwamoto S, Tanaka K. A large-scale genomically predicted protein mass database enables rapid and broad-spectrum identification of bacterial and archaeal isolates by mass spectrometry. Genome Biol 2023; 24:257. [PMID: 38049850 PMCID: PMC10696839 DOI: 10.1186/s13059-023-03096-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 10/24/2023] [Indexed: 12/06/2023] Open
Abstract
MALDI-TOF MS-based microbial identification relies on reference spectral libraries, which limits the screening of diverse isolates, including uncultured lineages. We present a new strategy for broad-spectrum identification of bacterial and archaeal isolates by MALDI-TOF MS using a large-scale database of protein masses predicted from nearly 200,000 publicly available genomes. We verify the ability of the database to identify microorganisms at the species level and below, achieving correct identification for > 90% of measured spectra. We further demonstrate its utility by identifying uncultured strains from mouse feces with metagenomics, allowing the identification of new strains by customizing the database with metagenome-assembled genomes.
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Affiliation(s)
- Yuji Sekiguchi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Ibaraki, 305-8566, Japan.
| | | | - Dieter M Tourlousse
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Ibaraki, 305-8566, Japan
| | - Akiko Ohashi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Ibaraki, 305-8566, Japan
| | - Mayu Hamajima
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Ibaraki, 305-8566, Japan
| | - Daisuke Miura
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Ibaraki, 305-8566, Japan
| | - Yoshihiro Yamada
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Shinichi Iwamoto
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Kyoto, Japan
| | - Koichi Tanaka
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Kyoto, Japan
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3
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Tohya M, Teramoto K, Watanabe S, Hishinuma T, Shimojima M, Ogawa M, Tada T, Tabe Y, Kirikae T. Correction for Tohya et al., "Whole-Genome Sequencing-Based Re-Identification of Pseudomonas putida/ fluorescens Clinical Isolates Identified by Biochemical Bacterial Identification Systems". Microbiol Spectr 2023; 11:e0430522. [PMID: 36802173 PMCID: PMC10100977 DOI: 10.1128/spectrum.04305-22] [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: 02/23/2023] Open
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4
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Rabbi MS, Teramoto K, Ishibashi H, Roshid MM. Imaging of sub-surface defect in CFRP laminate using A 0-mode Lamb wave: Analytical, numerical and experimental studies. Ultrasonics 2023; 127:106849. [PMID: 36137467 DOI: 10.1016/j.ultras.2022.106849] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 06/08/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Lamb wave propagation in the anisotropic material is characterized by the prominent directivity of wave energy transfer governed by the fiber direction. Due to this anisotropic behavior, it is difficult to define the location of defects by using the arriving time of reflected signals. In this article, A0-mode Lamb wave-based damage detection technique has been illustrated which can detect the overlapping region of incident and scattered wave in the vicinity of the finite defect region in CFRP composite plate-like structure. A 5-cycle Hanning windowed tone burst of 30 kHz has been allowed to propagate through a 2 mm thickness [0/90]4S CFRP plate with subsurface cylindrical defect. In the near field region of the defect, the incoming and reflected wave overlaps and the dynamic shear strains of the out-of-plane displacement evaluated consequently. A covariance matrix is developed consisting of the shear strains. The proposed technique can detect the overlapping regions by measuring the determinant of covariance matrix, thus the image of the defect can be reconstructed. In this article, the analytical model of the proposed wavelet-based technique for the subsurface cylindrical defect is discussed and their physical meanings are investigated through numerical and experimental studies in a cross-ply laminate.
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Affiliation(s)
- M S Rabbi
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chattogram 4349, Bangladesh.
| | - K Teramoto
- Department of Advanced Technology Fusion, Saga University, Saga 840-8502, Japan
| | - H Ishibashi
- Wakayama College, National Institute of Technology, Wakayama 644-0023, Japan
| | - M M Roshid
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chattogram 4349, Bangladesh
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5
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Teramoto K, Izumo M, Kuwata S, Kamijima R, Suzuki T, Nishikawa H, Mizukoshi K, Takai M, Ohara H, Harada T, Akashi Y. Prognostic relevance of exercise pulmonary hypertension for new-onset atrial fibrillation in primary mitral regurgitation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
New-onset of atrial fibrillation (AF) portends poor prognosis in patients with primary mitral regurgitation (MR). However less is known about prognostic indicator for new-onset AF.
Purpose
The purpose of this study was to identify the prognostic relevance of exercise pulmonary hypertension for the new-onset AF in patients with primary MR.
Methods
Total of 114 consecutive patients with primary MR who underwent symptom-limited exercise echocardiography using supine-cycle ergometer were followed for new-onset AF over mean follow-up time of 3.6±2.6 years. Those with prevalent AF and pulmonary hypertension (estimated systolic pulmonary artery pressure ≥50mmHg) prior to exercise echocardiography were excluded from our analysis. We defined exercise-induced pulmonary hypertension (ExPHT) as those with peak estimated systolic pulmonary artery pressure (SPAP) ≥60mmHg or delta SPAP defined as differences between rest and peak SPAP ≥20mmHg.
Results
The mean age was 61±15 years old and 70 (61%) were male. Of those, 8 (7.8%) had mild MR, 32 (31.1%) had moderate MR, and 63 (61.2%) had severe MR. 60 (52.2%) patients had ExPHT. A total of 27 cases of new-onset AF were found during follow-up where the ExPHT group had higher prevalence of new-onset AF than the non-ExPHT group (35% vs. 11%, p=0.002). Those with ExPHT had significantly stronger association with shorter event-free survival time of new-onset AF (log-rank p<0.001, Figure). When adjusted for age, sex, body surface area, the American Society of Echocardiography MR grade, left atrial dimension, peak systolic blood pressure and heart rate, the multivariable Cox regression analysis showed that those with ExPHT had a hazard risk of 3.1 ([95% CI 1.1–9.1], p=0.039) for new-onset of AF.
Conclusions
Exercise-induced pulmonary hypertension predicted incident of new-onset AF in those with primary MR. Exercise echocardiography is expected to play an important role in decision making with regards to the optimal timing for surgical intervention in primary MR.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Teramoto
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Izumo
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - S Kuwata
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - R Kamijima
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - T Suzuki
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Nishikawa
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - K Mizukoshi
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Takai
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - H Ohara
- St. Marianna University School of Medicine, Division of Ultrasound Center, Kawasaki, Japan
| | - T Harada
- St. Marianna University School of Medicine, Kawasaki, Japan
| | - Y.J Akashi
- St. Marianna University School of Medicine, Kawasaki, Japan
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6
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Kozakai R, Ono T, Hoshino S, Takahashi H, Katsuyama Y, Sugai Y, Ozaki T, Teramoto K, Teramoto K, Tanaka K, Abe I, Asamizu S, Onaka H. Acyltransferase that catalyses the condensation of polyketide and peptide moieties of goadvionin hybrid lipopeptides. Nat Chem 2020; 12:869-877. [PMID: 32719482 DOI: 10.1038/s41557-020-0508-2] [Citation(s) in RCA: 19] [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] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 06/11/2020] [Indexed: 01/10/2023]
Abstract
Fusions of fatty acids and peptides expand the structural diversity of natural products; however, polyketide/ribosomally synthesized and post-translationally modified peptides (PK/RiPPs) hybrid lipopeptides are relatively rare. Here we report a family of PK/RiPPs called goadvionins, which inhibit the growth of Gram-positive bacteria, and an acyltransferase, GdvG, which catalyses the condensation of the PK and RiPP moieties. Goadvionin comprises a trimethylammonio 32-carbon acyl chain and an eight-residue RiPP with an avionin structure. The positions of six hydroxyl groups and one double bond in the very-long acyl chain were determined by radical-induced dissociation tandem mass spectrometry, which collides radical ion species to generate C-C bond cleavage fragments. GdvG belongs to the Gcn5-related N-acetyltransferase superfamily. Unlike conventional acyltransferases, GdvG transfers a very long acyl chain that is tethered to an acyl carrier protein to the N-terminal amino group of the RiPP moiety. gdvG homologues flanked by PK/fatty acid and RiPP biosynthesis genes are widely distributed in microbial species, suggesting that acyltransferase-catalysed condensation of PKs and RiPPs is a general strategy in biosynthesis of similar lipopeptides.
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Affiliation(s)
- Ryosuke Kozakai
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Takuto Ono
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Shotaro Hoshino
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hidenori Takahashi
- Koichi Tanaka Mass Spectrometry Research Laboratory Shimadzu Corporation, Kyoto, Japan
| | - Yohei Katsuyama
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Yoshinori Sugai
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Taro Ozaki
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan
| | - Kazuya Teramoto
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Kanae Teramoto
- Koichi Tanaka Mass Spectrometry Research Laboratory Shimadzu Corporation, Kyoto, Japan
| | - Koichi Tanaka
- Koichi Tanaka Mass Spectrometry Research Laboratory Shimadzu Corporation, Kyoto, Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Shumpei Asamizu
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan
| | - Hiroyasu Onaka
- Graduate School of Agricultural and Life Sciences, Department of Biotechnology, The University of Tokyo, Tokyo, Japan. .,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan.
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7
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Tohya M, Watanabe S, Teramoto K, Tada T, Kuwahara-Arai K, Mya S, Zin KN, Kirikae T, Tin HH. Pseudomonas yangonensis sp. nov., isolated from wound samples of patients in a hospital in Myanmar. Int J Syst Evol Microbiol 2020; 70:3597-3605. [PMID: 32501786 DOI: 10.1099/ijsem.0.004181] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strains of a Gram-negative, aerobic, rod-shaped, non-spore-forming bacterium, designated MY50T, MY63 and MY101, were isolated from wound samples of three hospitalized patients in Yangon, Myanmar. Strains MY50T, MY63 and MY101 grew at temperatures of 4-44 °C, in media containing 1.0-7.0 % (w/v) NaCl and at pH 6.0-9.5. Phylogenetic analysis based on 16S rRNA gene and whole genome sequences showed that these strains belonged to the genus Pseudomonas and were part of the Pseudomonas oleovorans group and located close to Pseudomonas guguanensis and Pseudomonas mendocina. Whole-genome comparisons, using average nucleotide identity and digital DNA-DNA hybridization analyses, confirmed that strains MY50T, MY63 and MY101 were the same strain and they were a distinct species in the P. oleovorans group. Results of phenotypic characterization tests demonstrated that utilization of p-hydroxy-phenylacetic acid, glycerol, l-pyroglutamic acid and quinic acid could distinguish these strains from other species of the P. oleovorans group. These genetic and phenotypic characteristics suggest that they should be classified as representing a novel species, under the proposed name Pseudomonas yangonensis sp. nov. The type strain is MY50T (=LMG 31602T,=JCM 33396T), with a DNA G+C content of 62.82 mol%.
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Affiliation(s)
- Mari Tohya
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shin Watanabe
- Department of Microbiome Research, Juntendo University School of Medicine, Tokyo, Japan
| | - Kanae Teramoto
- Koichi Tanaka Mass Spectrometry Research Laboratory, Kyoto, Japan
| | - Tatsuya Tada
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kyoko Kuwahara-Arai
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - San Mya
- National Health Laboratory, Yangon, Myanmar
| | - Khwar Nyo Zin
- Clinical Pathology Department, Yangon General Hospital, Yangon, Myanmar
| | - Teruo Kirikae
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
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8
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Tohya M, Watanabe S, Teramoto K, Shimojima M, Tada T, Kuwahara-Arai K, War MW, Mya S, Tin HH, Kirikae T. Pseudomonas juntendi sp. nov., isolated from patients in Japan and Myanmar. Int J Syst Evol Microbiol 2019; 69:3377-3384. [PMID: 31368883 DOI: 10.1099/ijsem.0.003623] [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] [Indexed: 11/18/2022] Open
Abstract
A Gram-negative, aerobic, rod-shaped, non-spore-forming bacterium, designated as strain BML3T, was isolated from a sputum sample of a hospital patient in Japan. Strain BML3T grew at temperatures from 4 to 40 °C, in 1.0-7.0 % (w/v) NaCl and at pH 6.0-9.0. Results of phylogenetic analysis based on the sequences of housekeeping genes, including the 16S rRNA gene and rpoB, rpoD and gyrB, showed that strain BML3T was part of the Pseudomonas putida group and located close to Pseudomonas asiatica, Pseudomonas monteiliiand P. putida . Whole-genome comparisons, using average nucleotide identity and digital DNA-DNA hybridization, confirmed strain BML3T to be a distinct species among the P. putida group. Phenotypic characterization tests demonstrated that the utilization of phenylmercuric acetate could distinguish this strain from other closed species of the P. putida group. Based on genetic and phenotypic evidence, strain BML3T should be classified as a novel species, for which the name Pseudomonas juntendi sp. nov. is proposed. The type strain is BML3T (=DSM 109244T,=JCM 33395T), with a DNA G+C content of 62.66 mol %.
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Affiliation(s)
- Mari Tohya
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shin Watanabe
- Department of Microbiome Research, Juntendo University School of Medicine, Tokyo, Japan
| | - Kanae Teramoto
- Koichi Tanaka Mass Spectrometry Research Laboratory, Kyoto, Japan
| | | | - Tatsuya Tada
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kyoko Kuwahara-Arai
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - May Wint War
- Mandalay Public Health Laboratory, Mandalay, Myanmar
| | - San Mya
- National Health Laboratory, Yangon, Myanmar
| | | | - Teruo Kirikae
- Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
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9
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Teramoto K, Cheng S, Claggett B, Solomon S, Heiss G, Tanaka H, Matsushita K, Shah A. P2258Pulse wave velocity, total arterial compliance, and cardiac structure and function in late life. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0736] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Coupled abnormalities in arterial and left ventricular (LV) stiffness characterize aging and heart failure with preserved ejection fraction. We hypothesized that two measures of aortic stiffness, pulse wave velocity (PWV; reflecting segmental arterial wall stress in late systole) and total arterial compliance (TAC; reflecting distensibility of entire arterial system) differentially relate to cardiac structure and function in the elderly.
Methods
Among participants in the Atherosclerosis Risk In Community (ARIC) study, we assessed the cross-sectional relationship of carotid-femoral PWV (cfPWV) and TAC with echocardiographic measures of cardiac structure and function using multivariable linear regression adjusting for demographics and co-morbidities. TAC defined as stroke volume over pulse pressure [mL/mmHg]. Exclusions were LVEF <50%, prevalent HF, ≥moderate valvular disease.
Results
Of the 4,141 participants included in this study, mean age was 75±5 years, 41% were male, and 80% were white. Mean values were: cfPWV: 11.7±3.4 m/sec; TAC: 1.1±0.3 mL/mmHg. Greater cfPWV was associated with greater LV mass, worse systolic function, and worse diastolic function (Table). In contrast, worse TAC was not related to LV structure and did not demonstrate consistent relationships with measures of LV diastolic function, but was associated with worse LV longitudinal strain.
Echo measures cfPWV (1SD increase) TAC (1SD decrease) β Coefficient p-value β Coefficient p-value Cardiac structure Mean wall thickness, cm 0.10 <0.001 -0.01 0.499 LVMI, g/m2 0.04 0.016 0.02 0.299 LVEDVI, ml/m2 -0.07 <0.001 -0.02 0.332 LV systolic function LVEF (Simpson's), % -0.04 0.01 -0.16 <0.001 Longitudinal strain, % 0.14 <0.001 0.19 <0.001 LV diastolic function Septal e', cm/sec -0.08 <0.001 -0.02 0.169 E/e' septal 0.04 0.005 -0.02 0.138 LAVI, ml/m2 -0.05 0.003 -0.04 0.026
Conclusion
Two non-invasive measures of aortic stiffness, cfPWV and TAC, demonstrate differential associations with LV structure and function in late life. Greater cfPWV is more robustly associated with LV structure and function than TAC.
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Affiliation(s)
- K Teramoto
- Brigham and Womens Hospital, Cardiology, Boston, United States of America
| | - S Cheng
- Cedars-Sinai Medical Center, Cardiology, Los Angels, United States of America
| | - B Claggett
- Brigham and Womens Hospital, Cardiology, Boston, United States of America
| | - S Solomon
- Brigham and Womens Hospital, Cardiology, Boston, United States of America
| | - G Heiss
- University of North Carolina Hospitals, Epidemiology, Chapel Hill, United States of America
| | - H Tanaka
- University of Texas at Austin, Kinesiology and Health Education, Austin, United States of America
| | - K Matsushita
- Johns Hopkins Bloomberg School of Public Health, Epidemiology, Baltimore, United States of America
| | - A Shah
- Brigham and Womens Hospital, Cardiology, Boston, United States of America
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10
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Tohya M, Watanabe S, Teramoto K, Uechi K, Tada T, Kuwahara-Arai K, Kinjo T, Maeda S, Nakasone I, Zaw NN, Mya S, Zan KN, Tin HH, Fujita J, Kirikae T. Pseudomonas asiatica sp. nov., isolated from hospitalized patients in Japan and Myanmar. Int J Syst Evol Microbiol 2019; 69:1361-1368. [PMID: 30810522 DOI: 10.1099/ijsem.0.003316] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel Gram-negative, aerobic, rod-shaped, non-spore-forming bacterial strain, RYU5T, was isolated from a stool sample of an inpatient at a hospital in Okinawa, Japan. The optimal growth temperature of RYU5T was 30 °C. Phylogenetic analysis based on the sequences of housekeeping genes, including the 16S rRNA, rpoB, rpoD and gyrB genes, showed that RYU5T was a member of the Pseudomonas putida group and was located close to Pseudomonas monteilii and P. putida. Whole-genome comparisons, using average nucleotide identity and digital DNA-DNA hybridization, confirmed that strain RYU5T should be classified as a novel species of Pseudomonas. Phenotypic characterization tests showed that utilization of d-mannose, d-serine, l-arabinose and d-fructose could distinguish this strain from other related species of the genus Pseudomonas. Based on genetic and phenotypic evidence, strain RYU5T should be classified as a novel species, for which the name Pseudomonas asiatica sp. nov. is proposed. The type strain is RYU5T (=DSM 107182T, =JCM 32716T), with a DNA G+C content of 62.25 mol%.
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Affiliation(s)
- Mari Tohya
- 1Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Shin Watanabe
- 2Department of Microbiome Research, Juntendo University School of Medicine, Tokyo, Japan
| | - Kanae Teramoto
- 3Koichi Tanaka Mass Spectrometry Research Laboratory, Kyoto, Japan
| | - Kohei Uechi
- 4Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Tatsuya Tada
- 1Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kyoko Kuwahara-Arai
- 1Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
| | - Takeshi Kinjo
- 4Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Shiro Maeda
- 5Division of Clinical Laboratory and Blood Transfusion, University Hospital of the Ryukyus, Okinawa, Japan
| | - Isamu Nakasone
- 4Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Ni Ni Zaw
- 6Clinical Pathology Section, Mandalay General Hospital, Mandalay, Myanmar
| | - San Mya
- 7National Health Laboratory, Yangon, Myanmar
| | | | | | - Jiro Fujita
- 4Department of Infectious Diseases, Respiratory, and Digestive Medicine, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Teruo Kirikae
- 1Department of Microbiology, Juntendo University School of Medicine, Tokyo, Japan
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Ohshio Y, Hayashi K, Okamoto K, Kaku R, Kataoka Y, Kawaguchi Y, Ohshio M, Igarashi T, Hashimoto M, Teramoto K, Hanaoka J. P1.02-030 The Effect of Chronic Obstructive Pulmonary Disease on the Tumor Stroma in Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Igarashi T, Hayashi K, Okamoto K, Kaku R, Kataoka Y, Kawaguchi Y, Hashimoto M, Ohshio Y, Teramoto K, Hanaoka J. P3.16-048 The Role of Pulmonary Resection in Stage IVa Non-Small Cell Carcinoma Patients. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Teramoto K, Namura Y, Hayashi K, Ishida K, Ueda K, Okamoto K, Kaku R, Hori T, Kawaguchi Y, Igarashi T, Hashimoto M, Ohshio Y, Kitamura S, Motoishi M, Suzumura Y, Sawai S, Hanaoka J, Daigo Y. P1.03-037 A Phase II Study of Adjuvant Chemotherapy with Docetaxel plus Nedaplatin for Completely Resected Non-Small Cell Lung Cancer. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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14
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Nouioui I, Sangal V, Carro L, Teramoto K, Jando M, Montero-Calasanz MDC, Igual JM, Sutcliffe I, Goodfellow M, Klenk HP. Two novel species of rapidly growing mycobacteria: Mycobacterium lehmannii sp. nov. and Mycobacterium neumannii sp. nov. Int J Syst Evol Microbiol 2017; 67:4948-4955. [PMID: 29058645 DOI: 10.1099/ijsem.0.002350] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two rapidly growing mycobacteria with identical 16S rRNA gene sequences were the subject of a polyphasic taxonomic study. The strains formed a well-supported subclade in the mycobacterial 16S rRNA gene tree and were most closely associated with the type strain of Mycobacterium novocastrense. Single and multilocus sequence analyses based on hsp65, rpoB and 16S rRNA gene sequences showed that strains SN 1900T and SN 1904T are phylogenetically distinct but share several chemotaxonomic and phenotypic features that are are consistent with their classification in the genus Mycobacterium. The two strains were distinguished by their different fatty acid and mycolic acid profiles, and by a combination of phenotypic features. The digital DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) values for strains SN 1900T and SN 1904T were 61.0 % and 94.7 %, respectively; in turn, the corresponding dDDH and ANI values with M. novocastrense DSM 44203T were 41.4 % and 42.8 % and 89.3 % and 89.5 %, respectively. These results show that strains SN1900T and SN 1904T form new centres of taxonomic variation within the genus Mycobacterium. Consequently, strains SN 1900T (40T=CECT 8763T=DSM 43219T) and SN 1904T (2409T=CECT 8766T=DSM 43532T) are considered to represent novel species, for which the names Mycobacteriumlehmannii sp. nov. and Mycobacteriumneumannii sp. nov. are proposed. A strain designated as 'Mycobacteriumacapulsensis' was shown to be a bona fide member of the putative novel species, M. lehmannii.
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Affiliation(s)
- Imen Nouioui
- School of Biology, Ridley Building 2, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Vartul Sangal
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Lorena Carro
- School of Biology, Ridley Building 2, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Kanae Teramoto
- Advanced and Fundamental Technology Center, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Marlen Jando
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | | | - José Mariano Igual
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Iain Sutcliffe
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Michael Goodfellow
- School of Biology, Ridley Building 2, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Hans-Peter Klenk
- School of Biology, Ridley Building 2, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
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15
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Nouioui I, Carro L, Teramoto K, Igual JM, Jando M, Del Carmen Montero-Calasanz M, Sutcliffe I, Sangal V, Goodfellow M, Klenk HP. Mycobacterium eburneum sp. nov., a non-chromogenic, fast-growing strain isolated from sputum. Int J Syst Evol Microbiol 2017; 67:3174-3181. [PMID: 28869002 DOI: 10.1099/ijsem.0.002033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A polyphasic study was undertaken to establish the taxonomic position of a non-chromogenic, rapidly growing Mycobacterium strain that had been isolated from sputum. The strain, CECT 8775T, has chemotaxonomic and cultural properties consistent with its classification in the genus Mycobacterium and was distinguished from the type strains of closely related mycobacterial species, notably from Mycobacterium paraense DSM 46749T, its nearest phylogenetic neighbour, based on 16S rRNA, hsp65 and rpoB gene sequence data. These organisms were also distinguished by a broad range of chemotaxonomic and phenotypic features and by a digital DNA-DNA relatedness value of 22.8 %. Consequently, the strain is considered to represent a novel species of Mycobacterium for which the name Mycobacterium eburneum sp. nov is proposed; the type strain is X82T (CECT 8775T=DSM 44358T).
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Affiliation(s)
- Imen Nouioui
- School of Biology, Ridley Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Lorena Carro
- School of Biology, Ridley Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Kanae Teramoto
- Advanced and Fundamental Technology Center, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - José M Igual
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Marlen Jando
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | | | - Iain Sutcliffe
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Vartul Sangal
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
| | - Michael Goodfellow
- School of Biology, Ridley Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Hans-Peter Klenk
- School of Biology, Ridley Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
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16
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Fowble KL, Teramoto K, Cody RB, Edwards D, Guarrera D, Musah RA. Development of “Laser Ablation Direct Analysis in Real Time Imaging” Mass Spectrometry: Application to Spatial Distribution Mapping of Metabolites Along the Biosynthetic Cascade Leading to Synthesis of Atropine and Scopolamine in Plant Tissue. Anal Chem 2017; 89:3421-3429. [DOI: 10.1021/acs.analchem.6b04137] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kristen L. Fowble
- State University of New York at Albany, Department
of Chemistry, 1400 Washington
Avenue, Albany, New York 12222, United States
| | - Kanae Teramoto
- JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo, Japan 196-8558
| | - Robert B. Cody
- JEOL USA Inc., 11 Dearborn Road, Peabody, Massachusetts 01960, United States
| | - David Edwards
- JEOL USA Inc., 11 Dearborn Road, Peabody, Massachusetts 01960, United States
| | - Donna Guarrera
- JEOL USA Inc., 11 Dearborn Road, Peabody, Massachusetts 01960, United States
| | - Rabi A. Musah
- State University of New York at Albany, Department
of Chemistry, 1400 Washington
Avenue, Albany, New York 12222, United States
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17
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Hamada M, Shibata C, Sakurai K, Hosoyama A, Oji S, Teramoto K, Tamura T. Reclassification of Amycolicicoccus subflavus as Hoyosella subflava comb. nov. and emended descriptions of the genus Hoyosella and Hoyosella altamirensis. Int J Syst Evol Microbiol 2016; 66:4711-4715. [PMID: 27514929 DOI: 10.1099/ijsem.0.001415] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
16S rRNA gene sequences of two type strains belonging to different genera within the suborder Corynebacterineae, namely Hoyosella altamirensis and Amycolicicoccus subflavus, show a similarity of 99.8 %. Therefore, in order to clarify their taxonomic relationship, a polyphasic recharacterization under the same conditions was carried out. The peptidoglycan of H. altamirensis NBRC 109631T and A. subflavus NBRC 109087T was of A1γ type with meso-diaminopimelic acid as their diagnostic diamino acid. Both strains contained MK-8 as the only detected menaquinone, C16 : 0 and C18 : 1ω9c as the major fatty acids, and diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol as the principal polar lipids. The coincidences of these chemotaxonomic features suggested that H. altamirensis and A. subflavus should be assigned to the same genus. Meanwhile, the average nucleotide identity value between both strains and the results of physiological and biochemical tests indicated that H. altamirensis and A. subflavus should be affiliated to different species. Therefore, according to Rules 38 and 41a of the Bacteriological Code, it is proposed that Amycolicicoccus subflavus Wang et al. 2010 be reclassified as Hoyosella subflava comb. nov. (type strain DQS3-9A1T=CGMCC 4.3532T=DSM 45089T=JCM 17490T=NBRC 109087T) and the descriptions of the genus HoyosellaJurado et al. 2009 and Hoyosella altamirensisJurado et al. 2009 are emended accordingly.
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Affiliation(s)
- Moriyuki Hamada
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Chiyo Shibata
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Kenta Sakurai
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Akira Hosoyama
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Syoko Oji
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Kanae Teramoto
- Advanced Technology Division, JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Tomohiko Tamura
- Biological Resource Center, National Institute of Technology and Evaluation (NBRC), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
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18
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Asamizu S, Ozaki T, Teramoto K, Satoh K, Onaka H. Killing of Mycolic Acid-Containing Bacteria Aborted Induction of Antibiotic Production by Streptomyces in Combined-Culture. PLoS One 2015; 10:e0142372. [PMID: 26544713 PMCID: PMC4636228 DOI: 10.1371/journal.pone.0142372] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 10/21/2015] [Indexed: 02/02/2023] Open
Abstract
Co-culture of Streptomyces with mycolic acid-containing bacteria (MACB), which we termed “combined-culture,” alters the secondary metabolism pattern in Streptomyces and has been a useful method for the discovery of bioactive natural products. In the course of our investigation to identify the inducing factor(s) of MACB, we previously observed that production of pigments in Streptomyces lividans was not induced by factors such as culture extracts or mycolic acids. Although dynamic changes occurred in culture conditions because of MACB, the activation of pigment production by S. lividans was observed in a limited area where both colonies were in direct contact. This suggested that direct attachment of cells is a requirement and that components on the MACB cell membrane may play an important role in the response by S. lividans. Here we examined whether this response was influenced by dead MACB that possess intact mycolic acids assembled on the outer cell membrane. Formaldehyde fixation and γ-irradiation were used to prepare dead cells that retain their shape and mycolic acids of three MACB species: Tsukamurella pulmonis, Rhodococcus erythropolis, and Rhodococcus opacus. Culturing tests verified that S. lividans does not respond to the intact dead cells of three MACB. Observation of combined-culture by scanning electron microscopy (SEM) indicated that adhesion of live MACB to S. lividans mycelia were a significant interaction that resulted in formation of co-aggregation. In contrast, in the SEM analysis, dead cells were not observed to adhere. Therefore, direct attachment by live MACB cells is proposed as one of the possible factors that causes Streptomyces to alter its specialized metabolism in combined-culture.
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Affiliation(s)
- Shumpei Asamizu
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, Japan
- * E-mail: (SA); (HO)
| | - Taro Ozaki
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - Kanae Teramoto
- Advanced Technology Department, JEOL Ltd., Akishima, Tokyo, Japan
| | - Katsuya Satoh
- Ion Beam Mutagenesis Research Group, Biotechnology and Medical Application Division, Quantum Beam Science Center, Japan Atomic Energy Agency, Takasaki, Gunma, Japan
| | - Hiroyasu Onaka
- Department of Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, Japan
- * E-mail: (SA); (HO)
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19
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Teramoto K, Suga M, Sato T, Wada T, Yamamoto A, Fujiwara N. Characterization of Mycolic Acids in Total Fatty Acid Methyl Ester Fractions from Mycobacterium Species by High Resolution MALDI-TOFMS. ACTA ACUST UNITED AC 2015; 4:A0035. [PMID: 26819906 DOI: 10.5702/massspectrometry.a0035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 12/19/2014] [Accepted: 02/13/2015] [Indexed: 11/23/2022]
Abstract
Mycolic acids (MAs) are characteristic components of bacteria in the suborder Corynebacterineae, such as Mycobacterium. MAs are categorized into subclasses based on their functional bases (cyclopropane ring, methoxy, keto, and epoxy group). Since MAs have heterogeneity among bacterial species, analyzing of MAs are required in the chemotaxonomic field. However, their structural analysis is not easy because of their long carbon-chain lengths and several functional groups. In this study, total fatty acid (FA) methyl ester (ME) fraction of M. tuberculosis H37Rv was analyzed by matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry (TOFMS) with a spiral ion trajectory (MALDI spiral-TOFMS). The distributions of carbon-chain length and their relative peak intensities were confirmed with those obtained by analysis of each subclass fraction which was separated from total FA ME fraction using thin-layer chromatography (TLC). The observed major peaks were reliably assigned as MAs owing to the high mass accuracy (error<3 ppm). The types of MA subclasses, their distributions of carbon-chain lengths, their relative peak intensities, and the ratio of even- and odd-numbered carbon-chain MAs for the total FA ME fraction were consistent with those of MA subclass fractions. To visualize whole MAs, contour maps of relative peak intensities for whole MAs were created. The contour maps indicated the MA subclasses and their distributions of carbon-chains with relative peak intensities at a glance. Our proposed method allows simple characterization in a short time and thus enables the analysis of large numbers of samples, and it would contribute to the chemotaxonomy.
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Affiliation(s)
| | - Mitsuo Suga
- Advanced and Fundamental Technology Center, JEOL Ltd
| | | | - Takayuki Wada
- Department of International Health, Institute of Tropical Medicine, Nagasaki University
| | - Atsushi Yamamoto
- Osaka City Institute of Public Health and Environmental Sciences
| | - Nagatoshi Fujiwara
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University
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20
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Ohshio Y, Hanaoka J, Kontani K, Teramoto K. Tranilast inhibits the function of cancer-associated fibroblasts responsible for the induction of immune suppressor cell types. Scand J Immunol 2015; 80:408-16. [PMID: 25224016 DOI: 10.1111/sji.12242] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 09/08/2014] [Indexed: 01/02/2023]
Abstract
Cancer-associated fibroblasts (CAFs) are the dominant stromal component in the tumour microenvironment (TME), playing critical roles in generation of pro-tumourigenic TME; however, their contribution to suppression of antitumour immune responses has not been fully understood. To elucidate the interaction between CAFs and immune suppressor cells, we examined whether inhibition of CAFs function would impair the induction of immune suppressor cell types in vitro. In this study, we applied an anti-allergic and antifibrotic agent tranilast, which is used clinically, and evaluated a potential of tranilast to serve as a CAFs inhibitor. CAFs that had been isolated from E.G7 or LLC1 tumour-bearing mice were cultured in the presence of tranilast, and thereafter, CAFs functions on the secretion of some soluble factors as well as the induction of immune suppressor cells were evaluated. As a result, tranilast inhibited the proliferation of CAFs and reduced the levels of stromal cell-derived factor-1, prostaglandin E2 and transforming growth factor-β1 from CAFs in a dose-dependent manner. On the other hand, tranilast exerted no inhibitory effects on immune cells at doses under 100 μm. The induction of regulatory T cells and myeloid-derived suppressor cells from their progenitor cells was suppressed in the medium that CAFs had been cultured in the presence of tranilast; however, these findings were not observed when those progenitor cells were cultured in the medium containing tranilast alone. These data demonstrate that tranilast inhibits CAFs function, which is responsible for the induction of immune suppressor cells, and possesses a potential to serve as a specific CAFs inhibitor.
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Affiliation(s)
- Y Ohshio
- Department of Surgery, Shiga University of Medical Science, Otsu, Japan
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21
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Ciampi Q, Bombardini T, Cortigiani L, Pratali L, Rigo F, Villari B, Picano E, Sicari R, Teramoto K, Suzuki K, Satoh Y, Minami K, Mizukoshi K, Kamijima R, Kou S, Takai M, Izumo M, Akashi Y, Cifra B, Dragulescu A, Friedberg M, Mertens L, O'driscoll J, Gargallo-Fernandez P, Araco M, Perez-Lopez M, Sharma R, Abram S, Arruda-Olson M, Scott G, Pellikka A, Nkomo T, Oh J, Milan A, Mccully B, Aguiar Rosa S, Portugal G, Moura Branco L, Galrinho A, Afonso Nogueira M, Abreu J, Cacela D, Abreu A, Fragata J, Cruz Ferreira R, Mielczarek A, Kasprzak J, Chrzanowski L, Plewka M, Lipiec P, Qawoq D, Rechcinski T, Wierzbowska-Drabik K, Magne J, Donal E, Dulgheru R, Pierard L, Lancellotti P. Oral Abstract session: Stress echo in clinical practice: Friday 5 December 2014, 08:30-10:00 * Location: Agora. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu251] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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22
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Sato H, Nakamura S, Teramoto K, Sato T. Structural Characterization of Polymers by MALDI Spiral-TOF Mass Spectrometry Combined with Kendrick Mass Defect Analysis. J Am Soc Mass Spectrom 2014; 25:1346-55. [PMID: 24845357 PMCID: PMC4105590 DOI: 10.1007/s13361-014-0915-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/31/2014] [Accepted: 04/08/2014] [Indexed: 05/14/2023]
Affiliation(s)
- Hiroaki Sato
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Sayaka Nakamura
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Kanae Teramoto
- Advanced Technology Department, JEOL Ltd, Akishima, Japan
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23
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Nishiyama H, Teramoto K, Suga M, Sato C. Positively charged nanogold label allows the observation of fine cell filopodia and flagella in solution by atmospheric scanning electron microscopy. Microsc Res Tech 2013; 77:153-60. [PMID: 24343867 DOI: 10.1002/jemt.22322] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 08/01/2013] [Revised: 11/04/2013] [Accepted: 11/16/2013] [Indexed: 11/10/2022]
Abstract
Optical microscopy is generally the first choice to observe microbes and cells. However, its resolution is not always sufficient to reveal specific target structures, such as flagella and pili, which are only nanometers wide. ASEM is an attractive higher resolution alternative, as the sample is observed in aqueous solution at atmospheric pressure. Sample pretreatment for ASEM only comprises simple tasks including fixation, gold labeling, and reagent exchange, taking less than 1 h in total. The lengthy sample pretreatments often required for more classical electron microscopies, such as embedding and dehydration, are unnecessary, and native morphology is preserved. In this study, positively charged nanogold particles were used to label the surfaces of bacteria and cultured animal cells, exploiting their net negative surface charge. After gold enhancement to increase the size of the nanogold particles, ASEM imaging of the bacteria in aqueous solution revealed pili and delicate spiral flagella. This natural shape contrasts starkly with images of dried flagella recorded by standard SEM. Positively charged nanogold labeled the plasma membrane of cultured COS7 cells, and after enhancement allowed filopodia as thin as 100 nm in diameter to be clearly visualized. Based on these studies, ASEM combined with positively charged nanogold labeling promises to become an important tool for the study of cell morphology and dynamics in the near future.
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Affiliation(s)
- Hidetoshi Nishiyama
- SM Technical Development Department, SM Business Unit, JEOL Ltd., 1-2 Musashino 3-chome, Akishima, Tokyo, 196-8558, Japan
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24
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Iino M, Nakagomi H, Teramoto K. Characteristics of Malignant Lymphoma and the Treatment Outcomes in Patients Aged 80 Years or Over at Our Institution. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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25
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Kobayashi S, Fujiwara K, Teramoto K, Itoh T, Sugimura H. Flare Phenomenon Following Gefitinib Treatment of Lung Cancer with Bone Metastasis. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Teramoto K, Tamura T, Hanada S, Sato T, Kawasaki H, Suzuki KI, Sato H. Simple and rapid characterization of mycolic acids from Dietzia strains by using MALDI spiral-TOFMS with ultra high mass-resolving power. J Antibiot (Tokyo) 2013; 66:713-7. [PMID: 23981960 DOI: 10.1038/ja.2013.79] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/30/2013] [Accepted: 07/11/2013] [Indexed: 11/09/2022]
Abstract
Mycolic acids have been used as important chemotaxonomic markers. In this study, a newly developed matrix-assisted laser desorption/ionization time-of-flight mass spectrometer with a spiral ion trajectory (MALDI spiral-TOFMS) was applied to the characterization of mycolic acids of three type strains of validated species belonging to the genus Dietzia (D. papillomatosis 105045(T), D. kunjamensis NBRC 105042(T) and D. timorensis NBRC 104184(T)), by analysis of total fatty acid methyl ester fractions. In addition, owing to the high mass-resolving power of MALDI spiral-TOFMS, adjacent peaks (0.036 Da mass differences) were successfully separated, and weak peaks corresponding to oxygenated mycolic acids were detected. For all samples, the distributions of carbon-chain lengths were mainly in the range of C30-C42 and the average number of carbon-chain lengths was about 37, which agreed reasonably well with reported results for the genus Dietzia. The number of double bonds and/or cyclopropane rings was 0-2. Relative peak intensities of each mycolic acid methyl ester were used to compare the mycolic acids of the three strains. The mycolic acids of D. papillomatosis and D. kunjamensis were characterized by a high content of mycolic acids with 0-1 double bond or cyclopropane ring and an almost equal content of mycolic acids with odd- and even-numbered carbon-chain lengths. In contrast, mycolic acids of D. timorensis were characterized by a high content of mycolic acids with 1-2 double bonds and/or cyclopropane rings with an even-numbered carbon-chain length. By using MALDI spiral-TOFMS, mycolic acids from three type strains of the genus Dietzia were characterized easily and rapidly.
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Affiliation(s)
- Kanae Teramoto
- Advanced Technology Department, JEOL Ltd., Akishima, Japan
| | - Tomohiko Tamura
- Resource Collection Division, NITE Biological Resource Center Department of Biotechnology, Kisarazu, Japan
| | - Satoshi Hanada
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | | | - Hiroko Kawasaki
- Resource Collection Division, NITE Biological Resource Center Department of Biotechnology, Kisarazu, Japan
| | - Ken-ichiro Suzuki
- Resource Collection Division, NITE Biological Resource Center Department of Biotechnology, Kisarazu, Japan
| | - Hiroaki Sato
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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Daigo Y, Takano A, Teramoto K, Chung S, Nakamura Y. A systematic approach to the development of novel therapeutics for lung cancer using genomic analyses. Clin Pharmacol Ther 2013; 94:218-23. [PMID: 23657161 DOI: 10.1038/clpt.2013.90] [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: 12/21/2012] [Accepted: 04/30/2013] [Indexed: 12/16/2022]
Abstract
Molecularly targeted drugs for cancer therapy represent a therapeutic advance, but the proportion of patients who receive clinical benefit is still very limited. We present here the rationale and initial results of our program to define molecules involved in lung carcinogenesis with the goal of identifying new therapeutic targets and/or predictive biomarkers for drug response. We have used gene expression analysis of 120 lung cancers followed by RNA interference, tumor-tissue microarray analysis, and functional analyses to systematically distinguish potential target molecules specifically expressed in cancer cells. Through this approach, we have identified oncoproteins that provide the starting point for the development of therapeutic antibodies, dominant negative peptides, small-molecule inhibitors, and therapeutic cancer vaccines. We believe that the approach we describe should result in new molecularly targeted therapies with minimal risk of adverse events.
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Affiliation(s)
- Y Daigo
- Department of Medical Oncology and Cancer Center, Shiga University of Medical Science, Otsu, Japan
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28
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Sato H, Ishii Y, Momose H, Sato T, Teramoto K. Application of High-Resolution MALDI-TOFMS with a Spiral Ion Trajectory for the Structural Characterization of Free Radical Polymerized Methacrylate Ester Copolymers. Mass Spectrom (Tokyo) 2013; 2:A0014. [PMID: 24349915 DOI: 10.5702/massspectrometry.a0014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 12/10/2012] [Indexed: 11/23/2022] Open
Abstract
The structural characterization of copolymers by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) remains a challenging task, since their random comonomer distribution creates very complicated mass spectra. In this study, a high-resolution TOF mass spectrometer with a spiral ion trajectory was applied to the structural and compositional characterization of free radical copolymerized poly(methyl methacrylate-co-tert-butyl methacrylate), poly(MMA-co-tBMA)s in ethyl lactate acting as a chain transfer agent. Virtually complete peak assignments of the isobaric components within the poly(MMA-co-tBMA)s served to identify the end-group combinations and copolymer compositions of individual copolymer components, allowing the distributions of comonomer compositions and six types of end-group combinations to be evaluated.
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Affiliation(s)
- Hiroaki Sato
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Yoko Ishii
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Hikaru Momose
- Corporate Research Laboratories, Mitsubishi Rayon Co. Ltd
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29
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Iino M, Nakagomi H, Teramoto K. Screening for Hepatitis B Virus Carriers and the Incidence of Hepatitis B Reactivation in Patients with Malignant Lymphoma at Our Institution. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32535-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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30
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Tsujita T, Yamada M, Takaku T, Shintani T, Teramoto K, Sato T. Purification and characterization of polyphenols from chestnut astringent skin. J Agric Food Chem 2011; 59:8646-8654. [PMID: 21777007 DOI: 10.1021/jf201679q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyphenolic compounds from chestnut astringent skin (CAS) were purified by dialysis, using Diaion HP-20 and Sephadex LH-20 columns. During purification, specific α-amylase inhibitory activities were increased about 3.4-fold, and the 50% inhibition value was 5.71 μg/mL in the Sephadex LH-20 fraction (SE-fraction). The SE-fraction contained about 67% of the total polyphenols, 57.3% of the flavanol-type tannins, and 51.3% of the procyanidins. Strong antioxidant activity was observed in the SE-fraction. Oral administration of the SE-fraction in rats fed corn starch significantly suppressed an increase in blood glucose levels. The SE-fraction contained gallic acid and ellagic acid. The MALDI-TOF spectrum showed a peak series exhibiting a mass increment of 288 Da, reflecting the variation in the number of catechin/epicatechin units. Our results suggest CAS contains polyphenols with strong α-amylase inhibitory activity. The data also suggest CAS polyphenols might be oligomeric proanthocyanidins with gallic acid and ellagic acid.
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Affiliation(s)
- Takahiro Tsujita
- Bioscience, Integrated Center for Sciences, Ehime University, Shitsukawa, Toon, Ehime, Japan.
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31
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Sato H, Teramoto K, Ishii Y, Watanabe K, Benno Y. Ribosomal protein profiling by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for phylogenety-based subspecies resolution of Bifidobacterium longum. Syst Appl Microbiol 2011; 34:76-80. [DOI: 10.1016/j.syapm.2010.07.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2009] [Revised: 07/16/2010] [Accepted: 07/20/2010] [Indexed: 10/19/2022]
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32
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Hotta Y, Teramoto K, Sato H, Yoshikawa H, Hosoda A, Tamura H. Classification of Genus Pseudomonas by MALDI-TOF MS Based on Ribosomal Protein Coding in S10−spc−alpha Operon at Strain Level. J Proteome Res 2010; 9:6722-8. [DOI: 10.1021/pr100868d] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yudai Hotta
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Kanae Teramoto
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Hiroaki Sato
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Hiromichi Yoshikawa
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Akifumi Hosoda
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
| | - Hiroto Tamura
- School of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan, Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Advanced Technology Division, JEOL Ltd., Tokyo 196-8558, Japan, and Department of Life, Environmental and Material Science, FIT, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan
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33
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Ichiki Y, Aoki T, Takashima Y, Tamura H, Teramoto K, Sato H, Arashidani K, Yoshikawa H. [Search of streptomycin-resistant bacteria in creek water and application of MALDI-TOF MS to grouping of the isolated bacteria]. J UOEH 2008; 30:11-25. [PMID: 18350749 DOI: 10.7888/juoeh.30.11] [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: 05/26/2023]
Abstract
A search of streptomycin-resistant bacteria was carried out using ten creek water samples collected in Saga prefecture by spreading the sample water on an R2A medium containing 10 microg/ml of streptomycin. It was clarified that such streptomycin-resistant bacteria as Bacillus, Novosphigobium, Sphingopyxis and Oceanobacillus were distributed in the creek water. Further, 60% of the isolates didn't form an inhibitory zone by the application of 700 microg/ml streptomycin solution in the cup method assay. Further, the effectiveness of the MALDI-TOF MS analysis for the grouping of the isolates was examined. The discriminating ability of MALDI-TOF MS analysis was higher than that of RFLP analysis and it was almost equal to that of sequence analysis using 16S rDNA. Considering the high-throughput ability of the MALDI-TOF MS instrument, MALDI-TOF mass spectral identification of bacteria will be a powerful method in the construction of a MALDI-TOF mass spectra database.
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Affiliation(s)
- Yayoi Ichiki
- Graduate School of Engineering, Fukuoka Institute of Technology. Higashi-ku, Fukuoka 811-0295, Japan
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34
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Teramoto K, Sato H, Sun L, Torimura M, Tao H, Yoshikawa H, Hotta Y, Hosoda A, Tamura H. Phylogenetic Classification of Pseudomonas putida Strains by MALDI-MS Using Ribosomal Subunit Proteins as Biomarkers. Anal Chem 2007; 79:8712-9. [DOI: 10.1021/ac701905r] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kanae Teramoto
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Hiroaki Sato
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Liwei Sun
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Masaki Torimura
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Hiroaki Tao
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Hiromichi Yoshikawa
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Yudai Hotta
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Akifumi Hosoda
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
| | - Hiroto Tamura
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Fukuoka Institute of Technology, 3-30-1 Wajirohigashi, Higashi-ku, Fukuoka 811-0295, Japan, and Department of Agriculture, Meijo University, 1-501 Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi 468-8502, Japan
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35
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Teramoto K, Sato H, Sun L, Torimura M, Tao H. A Simple Intact Protein Analysis by MALDI-MS for Characterization of Ribosomal Proteins of Two Genome-Sequenced Lactic Acid Bacteria and Verification of Their Amino Acid Sequences. J Proteome Res 2007; 6:3899-907. [PMID: 17854216 DOI: 10.1021/pr070218l] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [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: 11/29/2022]
Abstract
Rapid identification of bacteria by a bioinformatics-based approach, which processes the mass spectra observed by matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS), relies on the calculated masses of ribosomal subunit proteins as biomarkers predicted from amino acid sequences found in protein sequence databases. To verify the actual state of the registered sequence information, a simple intact protein analysis by MALDI-MS using cell lysates as samples was applied to the characterization of ribosomal proteins from genome-sequenced Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus strains. This method avoided the risk of loss of some subunit proteins and the formation of disulfide bonds during the purification of ribosomal proteins. By comparing this with the MALDI mass spectra of different strains and carrying out manual inspection of sequence information, a total of five errors in N-terminal amino acid sequences were identified. After sequence correction, approximately 40 out of 53 subunit proteins could be assigned, considering N-terminal methionine loss only as a post-translational modification. These show promise for use as practical biomarkers for the rapid identification of S. thermophilus and L. bulgaricus. After verification of these amino acid sequences, mass differences relative to those of genome-sequenced strains have the potential for distinguishing bacteria at the strain level.
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Affiliation(s)
- Kanae Teramoto
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8569, Japan
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36
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Kakinuma S, Asahina K, Okamura K, Teramoto K, Tateno C, Yoshizato K, Tanaka Y, Yasumizu T, Sakamoto N, Watanabe M, Teraoka H. Human Cord Blood Cells Transplanted Into Chronically Damaged Liver Exhibit Similar Characteristics to Functional Hepatocytes. Transplant Proc 2007; 39:240-3. [PMID: 17275513 DOI: 10.1016/j.transproceed.2006.10.211] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2006] [Indexed: 01/18/2023]
Abstract
Human umbilical cord blood (CB) cells have many advantages as a source for stem cell transplantation because of immaturity and availability. It has been reported that CB cells transplanted into an injured liver displayed hepatocyte-like phenotypes. However, there have been few studies to characterize CB-derived hepatocyte-like cells (HLCs). In this study, CB cells were transplanted into mice with 2 types of liver damage: transient and chronic damage. We analyzed the expression of hepatic differentiation markers in CB-derived HLCs. In the liver of NOD/SCID mice with transient damage, CB-derived HLCs were detected infrequently at 3 weeks after transplantation. In contrast, in the liver of SCID mice damaged chronically by a urokinase-type plasminogen activator transgene under the control of albumin promotor/enhancer (ALB-uPA/SCID mice), more human HLCs colonized the host liver compared with hosts with transiently damaged livers. The CB-derived HLCs in both the transiently and the chronically damaged liver expressed a few markers of human hepatocytes, whereas the transcripts related to mature hepatic functions, including cytochrome P450s, were detected only in the ALB-uPA/SCID mice. These data indicated that CB cells were able to display a similar phenotype to functional hepatocytes in the recipient liver with chronic damage. CB cells may represent a transplantable source for chronic decompensated liver disease.
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Affiliation(s)
- S Kakinuma
- Laboratory of Stem Cell Therapy, Center for Experimental Medicine, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
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37
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Teramoto K, Sato H, Sun L, Torimura M, Tao H, Waguri S, Hayashi T, Haga S. Rapid Identification and Classification of Psychrotrophic Lactic Acid Bacteria by Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry. BUNSEKI KAGAKU 2007. [DOI: 10.2116/bunsekikagaku.56.1063] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kanae Teramoto
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Hiroaki Sato
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Liwei Sun
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Masaki Torimura
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Hiroaki Tao
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Shingo Waguri
- Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University
| | - Toshiya Hayashi
- Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University
| | - Seiichi Haga
- Department of Applied Biological Chemistry, Faculty of Agriculture, Meijo University
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38
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Harada K, Nakashima H, Teramoto K, Nagai T, Hoshino S, Yonemitsu H. Trigger digits-associated carpal tunnel syndrome: relationship between carpal tunnel release and trigger digits. ACTA ACUST UNITED AC 2006; 10:205-8. [PMID: 16568515 DOI: 10.1142/s0218810405002905] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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: 01/05/2005] [Accepted: 10/04/2005] [Indexed: 12/12/2022]
Abstract
Of 875 idiopathic carpal tunnel syndrome (CTS) cases, 101 (11.5%) required trigger digit release operations within three years before and/or after carpal tunnel release (CTR); these 101 cases were investigated, retrospectively. Trigger digit release (TDR) was performed most often after the CTR, especially within three months. Next most common was at the same time as the CTR. The TDR performance rate after CTR was 5.9%. The nerve conduction study (NCS) comparison between trigger digits-associated CTS and isolated CTS showed that pre-operative distal motor latency was significantly more delayed in trigger digits-associated CTS, while there was no evidence of any difference due to age or gender. The difference of operative method (open or endoscopic procedure) did not influence the incidence rate of trigger digits after the CTR. This study suggested that trigger digits-associated CTS has a previously developed wide-ranging narrowing of the flexor tendon sheath.
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Affiliation(s)
- K Harada
- Department of Orthopaedic Surgery, Kumamoto Kinoh Hospital, Yamamuro, Kumamoto, Japan.
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39
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Sakaguchi H, Seki S, Iwai S, Kadoya H, Ido K, Isoda N, Tsuji K, Teramoto K, Suzuki M, Kioka K. Endoscopic thermal ablation therapies for hepatocellular carcinoma; multi-center study. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4147] [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: 11/20/2022] Open
Abstract
4147 Background: Differences of efficacy between radiofrequency ablation (RFA) and microwave coagulation (MWC) for hepatocellular carcinoma (HCC) is still unknown. So we performed multi-center study to assess factors contributing to survival among patients treated by endoscopic thermal ablation for single HCC. Methods: 396 patients in six institutions with single HCC who were firstly treated by endoscopic thermal ablation were enrolled in this study and assessed retrospectively. Among 396 patients, 347 were treated under general anesthesia and 49 were treated local anesthesia. 144 were treated by MWC and 252 were treated by RFA. 383 were ablated laparoscopically and 13 were done thoracoscopically. 230 HCCs were located superficial position of liver and 166 were deep position. Classification with Child-Turcotte-Pugh score, the Japan Integrated Staging score, and the Cancer of the Italian Program scoring system were performed. All patients were analyzed survival rates by Kaplan-Meier method and differences among groups were compared by the log-rank test. Results: Five year survival rates of all 396 patients were 63% and ten year survival rates were 42%. Differences between general and local anesthesia were not significant (p = 0.28). Differences between MWC and RFA were not significant (p = 0.77). Location of HCCs were not significant (p = 0.89). Differences among groups classified by Child-Turcotte-Pugh score were significant (p = 0.017). Classification by the Japan Integrated Staging score was not significant (p = 0.24). However, classification by the Cancer of the Italian Program scoring system were significant (p = 0.001). Conclusions: Endoscopic thermal ablation therapies for HCC was effective. Differences of efficacy between RFA and MWC were not found. No significant financial relationships to disclose.
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Affiliation(s)
- H. Sakaguchi
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - S. Seki
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - S. Iwai
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - H. Kadoya
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - K. Ido
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - N. Isoda
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - K. Tsuji
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - K. Teramoto
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - M. Suzuki
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
| | - K. Kioka
- Osaka City University, Osaka, Japan; Jichi Medical School, Tochigi, Japan; Teine Keijinkai Hospital, Sapporo, Japan; Tokyo Medical and Dental University, Tokyo, Japan; Mishuku Hospital, Tokyo, Japan; Osaka City General Hospital, Osaka, Japan
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Kawata T, Daimon M, Hasegawa R, Teramoto K, Toyoda T, Sekine T, Yamamoto K, Uchida D, Himi T, Yoshida K, Komuro I. Serum asymmetric dimethylarginine as a marker of coronary microcirculation in patients with non-insulin dependent diabetes mellitus: correlation with coronary flow reserve. Heart 2006; 91:1607-8. [PMID: 16287749 PMCID: PMC1769209 DOI: 10.1136/hrt.2004.051011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Sun L, Teramoto K, Sato H, Torimura M, Tao H, Shintani T. Characterization of ribosomal proteins as biomarkers for matrix-assisted laser desorption/ionization mass spectral identification of Lactobacillus plantarum. Rapid Commun Mass Spectrom 2006; 20:3789-98. [PMID: 17120274 DOI: 10.1002/rcm.2801] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
For rapid identification of bacteria by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), a bioinformatics approach using ribosomal subunit proteins as biomarkers has been proposed. This method compares the observed masses for biomarkers with calculated masses as predicted from the amino acid sequences registered on protein databases. To evaluate this approach, the expressed ribosomal proteins of a genome-sequenced bacterium, Lactobacillus plantarum NCIMB 8826, were characterized as a model sample. The protein expression of 42 ribosomal subunit proteins, together with 10 ribosome-associated proteins in the isolated ribosome fraction, was confirmed through two-dimensional gel electrophoresis combined with peptide mass fingerprinting. The observed masses of the proteins in the isolated ribosome fraction were then determined by MALDI-MS. We preliminarily selected 44 biomarkers whose observed masses were matched with the calculated masses predicted from the amino acid sequence registered in the protein databases by considering N-terminal methionine loss only. Of these, the finally selected reliable biomarkers were 34 proteins including 31 ribosomal subunit proteins and 3 ribosome-associated proteins that could be observed in the MALDI mass spectra of the cell lysate sample. These biomarkers were usable in MALDI-MS characterization of two industrial L. plantarum cultures.
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Affiliation(s)
- Liwei Sun
- Research Institute for Environmental Management Technology, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8569, Japan
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Teramoto K, Hara Y, Kumashiro Y, Chinzei R, Tanaka Y, Shimizu-Saito K, Asahina K, Teraoka H, Arii S. Teratoma formation and hepatocyte differentiation in mouse liver transplanted with mouse embryonic stem cell-derived embryoid bodies. Transplant Proc 2005; 37:285-6. [PMID: 15808620 DOI: 10.1016/j.transproceed.2004.12.120] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We previously reported that mouse embryonic stem (ES) cells are capable of differentiating into hepatocytes in cultured embryoid bodies (EBs) and that hepatocytes generate in the recipient liver injected with cultured day-9 EB cells via spleen without the formation of a teratoma. Because ES cells frequently form teratomas in recipient mice, we investigated incidence of teratoma formation when day-9 EBs derived from ES cells were transplanted directly into the subcapsule of mouse liver. In contrast to injection of day-9 EB cells through the portal vein via the spleen, direct subcapsular injection of cultured day-9 EB cells into liver, and even of cultured day-15 EBs, resulted in an high incidence of teratoma in the liver. In teratomas of livers injected directly with day-15 EBs, hepatocytes were detected singly and in clusters. These results imply that undifferentiated cells capable of developing into teratomas exist in cultured EBs, and even in cultured day-15 EBs containing differentiated hepatocytes.
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Affiliation(s)
- K Teramoto
- Department of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tokyo Medical and Dental University, Tokyo, Japan.
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Abstract
We previously reported that embryoid body (EB) cells derived from embryonic stem (ES) cells are capable of differentiating into functional hepatocyte-like cells both in vitro and in vivo. Because transplantation of EB-derived cells into the liver via the spleen resulted in a low incidence of teratoma formation, purification of hepatocyte-like cells is required to prevent teratoma formation. The aim of this study was to purify hepatocyte-like cells from cultured EBs. For the isolation of hepatocyte-like cells, EBs cultured for 15 days were treated with trypsin-EDTA. The disaggregated cells were plated on a gelatin-coated dish as a monolayer. These cells were separated by Percoll gradient centrifugation, enriched by magnetic cell sorting, and purified by FACS. The purified hepatocyte-like cells in monolayer cultures were positive for immunostaining for albumin and expressed albumin mRNA, but not Oct3/4 mRNA. Transplantation of the purified hepatocyte-like cells derived from mouse ES cells might be an effective treatment for liver failure.
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Affiliation(s)
- Y Kumashiro
- Department of Hepato-Biliary-Pancreatic Surgery, Graduate School of Medicine and Dentistry, Tokyo Medical and Dental University, Tokyo, Japan
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Satoh E, Hattori Y, Guo L, Li XK, Teramoto K, Arii S, Kimura H. Immunosuppressive effect of long-term drainage of thoracic duct on immunological memory in adult thymectomized rats. Transplant Proc 2005; 37:1947-8. [PMID: 15919514 DOI: 10.1016/j.transproceed.2005.02.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Profound reduction of the recirculating lymphocyte pool using thoracic duct drainage (TDD), a method developed by Gowans et al, has been shown to be of limited immunosuppressive value when applied in experimental as well as in clinical settings across major histocompatibility antigen complex (MHC) differences. This limitation is due to the observation that animals, in particular mice, are normally not able to have the drainage last longer than 8 to 10 days. However, using a simple modification of TDD, we have established a long-term TDD method, ie, more than 20 days. Combining this long-term TDD with adult thymectomy, we have examined the life span of naive and memory T cells specific for the minor histocompatibility antigen H-Y in female lewis rats. Furthermore, we demonstrated that memory T cells specific for the H-Y antigen do not appear to be recirculating lymphocytes.
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Affiliation(s)
- E Satoh
- Department of Research Surgery, National Center for Child Health and Development, Okura, Tokyo, Japan
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Satoh E, Hara Y, Fuji N, Li XK, Teramoto K, Arii S, Kimura H. Comparison of the vector systems for gene transduction into rat dendritic cells and peritoneal exudate cells. Transplant Proc 2005; 37:1953-6. [PMID: 15919516 DOI: 10.1016/j.transproceed.2005.02.109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Specialized antigen-presenting cells (APC), known as dendritic cells (DC), play a pivotal role in initiating primary immune responses. It has been reported that several vector systems, including adenoviral vectors, retroviral vectors, Hemagglutinating Virus of Japan (HVJ)-related vectors, and electroporation, are able to transduce genes into mouse and human DC. This has not been achieved for rat DC. To our knowledge, there is no direct evidence to support the view that the currently used vector systems are able to transduce genes into mature DC. Because most, if not all, gene transfer studies investigating DC or DC-related cell populations are carried out using heterogeneous groups of cells, it is therefore very important to determine to what extent gene transduction occurs in rat DC, and also selected mature DC (CD161a+ fully mature DC). In this study, we provide evidence that none of 4 vector systems are able to transfer genes into fully mature rat DC, which are derived from bone marrow cells (BMC), driven by Flt3/Flk2 ligand and interleukin (IL)-6, and purified by CD161a. Nevertheless, the most efficient gene transduction was observed in the developing DC progenitor cells during the long-term culture of rat BMC, and its gene expression was successfully achieved after 2 weeks of culture only with a human immunodeficiency virus (HIV)-based lentiviral vector system. The most critical time point for lentiviral gene transduction was around the 7th day from the beginning of culture with lentiviral vectors. Rat peritoneal exudate cells (PEC) and another cell line (K562) were easily transducted by adenoviral vectors and lentiviral vectors.
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Affiliation(s)
- E Satoh
- Department of Research Surgery, National Center for Child Health and Development, Ohkura, Tokyo, Japan
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Teramoto K, Miura S, Tsuzuki Y, Hokari R, Watanabe C, Inamura T, Ogawa T, Hosoe N, Nagata H, Ishii H, Hibi T. Increased lymphocyte trafficking to colonic microvessels is dependent on MAdCAM-1 and C-C chemokine mLARC/CCL20 in DSS-induced mice colitis. Clin Exp Immunol 2005; 139:421-8. [PMID: 15730387 PMCID: PMC1809314 DOI: 10.1111/j.1365-2249.2004.02716.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Although enhanced lymphocyte trafficking is associated with colitis formation, little information about its regulation is available. The aim of this study was to examine how the murine liver and activation-regulated chemokine (mLARC/CCL20) contributes to lymphocyte recruitment in concert with vascular adhesion molecules in murine chronic experimental colitis. T and B lymphocytes isolated from the spleen were fluorescence-labelled and administered to recipient mice. Lymphocyte adhesion to microvessels of the colonic mucosa and submucosa was observed with an intravital microscope. To induce colitis, the mice received two cycles of treatment with 2% dextran sodium sulphate (DSS). In some of the experiments antibodies against the adhesion molecules or anti-mLARC/CCL20 were administered, or CC chemokine receptor 6 (CCR6) of the lymphocytes was desensitized with excess amounts of mLARC/CCL20. Significant increases in T and B cell adhesion to the microvessels of the DSS-treated mucosa and submucosa were observed. In chronic colitis, the accumulation of lymphocytes was significantly inhibited by anti-mucosal addressin cell adhesion molecule (MAdCAM)-1 mAb, but not by anti-vascular cell adhesion molecule-1. In DSS-treated colonic tissue, the expression of mLARC/CCL20 was significantly increased, the blocking of mLARC/CCL20 by monoclonal antibody or the desensitization of CCR6 with mLARC/CCL20 significantly attenuated the DSS-induced T and B cell accumulation. However, the combination of blocking CCR6 with MAdCAM-1 did not further inhibit these accumulations. These results suggest that in chronic DSS-induced colitis, both MAdCAM-1 and mLARC/CCL20 may play important roles in T and B lymphocyte adhesion in the inflamed colon under flow conditions.
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Affiliation(s)
- K Teramoto
- Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
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Satoh E, Yan H, Miyagi T, Li XK, Sugiura W, Yamamoto N, Teramoto K, Arii S, Kimura H. Studies on the most efficient vector systems for gene transduction into dendritic cells. Transplant Proc 2005; 37:12-4. [PMID: 15808530 DOI: 10.1016/j.transproceed.2004.12.234] [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: 11/17/2022]
Abstract
Specialized antigen-presenting cells (APC), known as dendritic cells (DC), play a pivotal role in initiating primary immune responses. Several vector systems, including adenoviral vectors, retroviral vectors, hemagglutinating virus of Japan-related vectors, and the electroporation, have been shown to transduce genes into mouse and human but not rat DC. However, there is no direct evidence to support the view that the currently used vector systems are able to transduce genes into mature DC. Inasmuch as most, if not all, gene transfer studies investigating DC or DC-related cell populations are performed employing heterogeneous-groups of cells, it is therefore important to determine the extent to which gene transduction occurs in bona fide DC. In this study, we provide evidence that none of these vector systems are able to transfer genes into mature rat DC, which are derived from bone marrow cells (BMC), driven by Flt3/Flk2 ligand and IL-6, and purified with CD161a. Nevertheless, the most efficient gene transduction was observed with developing DC progenitor cells during long-term culture of rat BMC. Successful gene transfer was achieved after 2-week culture with an HIV-based lentiviral vector system.
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Affiliation(s)
- E Satoh
- Department of Research Surgery, National Center for Child Health and Development, Tokyo, Japan
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Katayama H, Hattori Y, Ogata K, Yan H, Satoh E, Teramoto K, Arii S, Kamide R, Nakagawa H, Kimura H. Phenotype and functional identity of GM-CSF–independent dendritic cells generated by long-term propagation of DC progenitor cells in bone marrow cells and skin langerhans cells. Transplant Proc 2005; 37:17-9. [PMID: 15808532 DOI: 10.1016/j.transproceed.2005.02.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Evidence is provided that dendritic cells (DC) generated by either long-term bone marrow cell (BMC) culture with Flt3L and interleukin-6 (IL-6), or after short-term BMC culture with granulocyte macrophage-colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4), contain heterogeneous cell populations of admixed DC and Mphi, regardless of the cytokine source. By employing GM-CSF-independent culture systems with the aid of Flt3/Flk-2 ligand and IL-6 and phenotypic characterization of BMC-derived DC and skin Langerhans cells (LC), revealed similar phenotypes. Furthermore, CD103 (OX62), which is widely used for rat DC separation, was found to be insufficient to enrich DC, due to downregulation of the marker. In this regard, the most efficient selection of rat DC, was obtained by CD161a (NKR-P1A), a member of the C-type lectin family. Despite the phenotypic similarity with BMC-derived DC, the nucleus of LC showed a distinct morphology. A large population of DC generated by Flt3L/IL-6 from GM-CSF receptor-deficient mice by do not express NK1.1 (NKR-P1B and NKR-P1C). The profiles for BMC-derived DC were the same as for skin Langerhans cells.
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Affiliation(s)
- H Katayama
- Department of Research Surgery, National Research Center for Child Health and Development, Tokyo, Japan
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Hara Y, Teramoto K, Kumashiro Y, Sato E, Nakamura N, Takatsu S, Kawamura T, Arii S. Beneficial effect of tetrahydrobiopterin on the survival of rats exposed to hepatic ischemia-reperfusion injury. Transplant Proc 2005; 37:442-4. [PMID: 15808670 DOI: 10.1016/j.transproceed.2004.12.051] [Citation(s) in RCA: 10] [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: 11/18/2022]
Abstract
INTRODUCTION The protective role of nitric oxide (NO) against hepatic ischemia-reperfusion (I/R) injury remains controversial. In this study we investigated the effect of tetrahydrobiopterin (BH4) on the survival of rats exposed to an hepatic I/R injury. METHODS The rats were subjected to 100 minutes of 70% hepatic ischemia 30 minutes after administration of BH4 or saline. A specific inducible NO synthase (iNOS) blocker, 1400W, was used to evaluate endogenous iNOS. NOS protein measured the histological appearance of the liver by Western blotting, and survival was evaluated after reperfusion. RESULTS The 1-week survival rate was 60% among the BH4 group and 10% for the saline group. The serum ALT and bilirubin values in the BH4 group were significantly lower than the saline group. Histological examination of the liver revealed only a small necrotic area in the BH4 group as opposed to massive necrosis and cell infiltration in the saline group. Injection of 1400W significantly decreased the prolongation of survival produced by BH4. CONCLUSIONS BH4 significantly improved the survival rate, the histological findings, and the liver function, thereby reducing liver failure. Western blotting showed a higher level of iNOS protein in the BH4 group than the saline group, 1400W suppressed this effect of BH4. Taken together, these observations suggest that NO derived from reactions driven by BH4-induced iNOS exerts a protective effect against reperfusion injury.
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Affiliation(s)
- Y Hara
- Department of Surgery, Tokyo Medical and Dental University; Tokyo, Japan
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50
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Ochiai T, Hiranuma S, Takiguchi N, Ito K, Maruyama M, Nagahama T, Kawano T, Nagai K, Nishikage T, Noguchi N, Takamatsu S, Kawamura T, Teramoto K, Iwai T, Arii S. Treatment strategy for Boerhaave's syndrome. Dis Esophagus 2004; 17:98-103. [PMID: 15209751 DOI: 10.1111/j.1442-2050.2004.00361.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Esophageal rupture is a potentially mortal condition. Rapid and correct diagnosis, and urgent surgical treatment with esophagectomy is indicated, but conservative and other surgical treatments have also been reported recently. The treatment strategies for esophageal rupture are discussed here, based on our experiences with four cases during the last 10 years. They were admitted urgently and each was treated by a different method. Three of them underwent emergency operations, one undergoing primary closure of the ruptured esophagus, another received a T-tube insertion from the ruptured site with omental flap, and the third an esophagogastrectomy. The fourth case was treated conservatively. All patients survived and were discharged 36-144 days post treatment. One of them was readmitted for debridement of necrotic rib. In conclusion, the prompt and accurate diagnosis of esophageal rupture is crucial for a subsequent successful treatment. Conservative treatment or operation including esophagectomy will be determined by the severity of the condition.
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Affiliation(s)
- T Ochiai
- Department of Surgery, Tokyo Medical and Dental University, Tokyo, Japan.
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