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Watanabe S, Yoshioka H, Sakai H, Hotta K, Takenoyama M, Yamada K, Sugawara S, Takiguchi Y, Hosomi Y, Tomii K, Niho S, Nishio M, Kato T, Takahashi T, Ebi H, Aono M, Yamamoto N, Ohe Y, Nakagawa K. Association between skin toxicity and efficacy of necitumumab in squamous non-small-cell lung cancer: a pooled analysis of two randomized clinical trials-SQUIRE and JFCM. ESMO Open 2024; 9:102975. [PMID: 38520847 PMCID: PMC10980953 DOI: 10.1016/j.esmoop.2024.102975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 12/14/2023] [Accepted: 02/29/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Efficacy of necitumumab [recombinant human monoclonal antibody that blocks the ligand binding epidermal growth factor receptor (EGFR)] in patients with squamous (SQ) non-small-cell lung cancer (NSCLC) has been confirmed in two randomized clinical trials (SQUIRE and JFCM). This study evaluated the association between efficacy and initial skin toxicity with necitumumab treatment by analyzing pooled data from two clinical trials (SQUIRE and JFCM). MATERIALS AND METHODS Data of 635 patients with SQ-NSCLC (intent-to-treat population) treated with necitumumab plus gemcitabine and cisplatin (N + GC) were pooled from two clinical trials (SQUIRE and JFCM). The relationship between skin toxicities developed by the end of the second cycle and efficacy was evaluated. Efficacy endpoints included overall survival (OS), progression-free survival (PFS), and objective response rate (ORR). Univariate and multivariate analyses were carried out for these endpoints. RESULTS OS and ORR were associated with skin toxicity, whereas PFS was not. Patients with grade ≥2 or grade 1 skin toxicity had significantly longer OS compared to patients without skin toxicity (grade 0) in the N + GC group [median = 15.0 (grade ≥2); 12.7 (grade 1); 9.4 (grade 0) months; hazard ratio (HR) = 0.51 (grade ≥2 to grade 0); 95% confidence interval (CI) 0.40-0.64, P < 0.001 and HR = 0.64 (grade 1 to grade 0); 95% CI 0.52-0.80, P < 0.001]. In multivariate analysis, OS was significantly associated with skin toxicity. CONCLUSIONS A significant association was found between necitumumab-induced skin toxicity and efficacy. These results are consistent with the previously reported association between other EGFR inhibitors-induced skin toxicity and efficacy.
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MESH Headings
- Humans
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/pathology
- Lung Neoplasms/drug therapy
- Lung Neoplasms/pathology
- Male
- Female
- Middle Aged
- Aged
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/adverse effects
- Randomized Controlled Trials as Topic
- Adult
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/pharmacology
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Gemcitabine
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/pathology
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/therapeutic use
- Cisplatin/therapeutic use
- Cisplatin/pharmacology
- Cisplatin/adverse effects
- Aged, 80 and over
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Affiliation(s)
- S Watanabe
- Department of Respiratory Medicine and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata
| | - H Yoshioka
- Department of Thoracic Oncology, Kansai Medical University Hospital, Hirakata.
| | - H Sakai
- Department of Thoracic Oncology, Ageo Central General Hospital, Ageo
| | - K Hotta
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama
| | - M Takenoyama
- Department of Thoracic Surgery, Matsuyama Red Cross Hospital, Matsuyama
| | - K Yamada
- Department of Respiratory Medicine, Shin Koga Hospital, Fukuoka
| | - S Sugawara
- Department of Pulmonary Medicine, Sendai Kousei Hospital, Sendai
| | - Y Takiguchi
- Department of Medical Oncology, Chiba University Hospital, Chiba
| | - Y Hosomi
- Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo
| | - K Tomii
- Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe
| | - S Niho
- Department of Pulmonary Medicine and Clinical Immunology, Dokkyo Medical University, Mibu
| | - M Nishio
- Department of Thoracic Medical Oncology, The Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo
| | - T Kato
- Department of Thoracic Oncology, Kanagawa Cancer Center, Yokohama
| | - T Takahashi
- Division of Thoracic Oncology, Shizuoka Cancer Center, Nagaizumi
| | - H Ebi
- Pharmaceuticals Group, Nippon Kayaku Co., Ltd, Chiyoda-ku, Tokyo
| | - M Aono
- Pharmaceuticals Group, Nippon Kayaku Co., Ltd, Chiyoda-ku, Tokyo
| | - N Yamamoto
- Internal Medicine III, Wakayama Medical University, Wakayama
| | - Y Ohe
- Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo
| | - K Nakagawa
- Department of Medical Oncology, Kindai University Faculty of Medicine, Osaka, Japan
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2
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Yamada K, Ishii Y, Tateda K. Biochemical characterization of the L1-like metallo-β-lactamase from Stenotrophomonas lactitubi. Antimicrob Agents Chemother 2024; 68:e0086623. [PMID: 38329347 PMCID: PMC10916395 DOI: 10.1128/aac.00866-23] [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: 07/02/2023] [Accepted: 01/02/2024] [Indexed: 02/09/2024] Open
Abstract
L1-like metallo-β-lactamases (MBLs) exhibit diversity and are highly conserved. Although the presence of the blaL1-like gene is known, the biochemical characteristics are unclear. This study aimed to characterize an L1-like MBL from Stenotrophomonas lactitubi. It showed 70.9-99.7% similarity to 50 L1-like amino acid sequences. The characteristic kinetic parameter was its high hydrolyzing efficiency for ampicillin and nitrocefin. Furthermore, L1-like from S. lactitubi was distinctly more susceptible to inhibition by EDTA than that to inhibition by 2,6-pyridinedicarboxylic acid.
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Affiliation(s)
- Kageto Yamada
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
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3
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Amekura H, Chettah A, Narumi K, Chiba A, Hirano Y, Yamada K, Yamamoto S, Leino AA, Djurabekova F, Nordlund K, Ishikawa N, Okubo N, Saitoh Y. Latent ion tracks were finally observed in diamond. Nat Commun 2024; 15:1786. [PMID: 38413643 PMCID: PMC10899563 DOI: 10.1038/s41467-024-45934-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/08/2024] [Indexed: 02/29/2024] Open
Abstract
Injecting high-energy heavy ions in the electronic stopping regime into solids can create cylindrical damage zones called latent ion tracks. Although these tracks form in many materials, none have ever been observed in diamond, even when irradiated with high-energy GeV uranium ions. Here we report the first observation of ion track formation in diamond irradiated with 2-9 MeV C60 fullerene ions. Depending on the ion energy, the mean track length (diameter) changed from 17 (3.2) nm to 52 (7.1) nm. High resolution scanning transmission electron microscopy (HR-STEM) indicated the amorphization in the tracks, in which π-bonding signal from graphite was detected by the electron energy loss spectroscopy (EELS). Since the melting transition is not induced in diamond at atmospheric pressure, conventional inelastic thermal spike calculations cannot be applied. Two-temperature molecular dynamics simulations succeeded in the reproduction of both the track formation under MeV C60 irradiations and the no-track formation under GeV monoatomic ion irradiations.
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Affiliation(s)
- H Amekura
- National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0003, Japan.
| | - A Chettah
- Department of Physics, LGMM laboratory, University of 20 Août 1955-Skikda, BP 26, route d'El Hadaiek-Skikda, Skikda, 21000, Algeria
| | - K Narumi
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
| | - A Chiba
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
| | - Y Hirano
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
| | - K Yamada
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
| | - S Yamamoto
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
| | - A A Leino
- Department of Physics and Helsinki Institute of Physics, University of Helsinki, PO Box 43, FI-00014, Helsinki, Finland
| | - F Djurabekova
- Department of Physics and Helsinki Institute of Physics, University of Helsinki, PO Box 43, FI-00014, Helsinki, Finland
| | - K Nordlund
- Department of Physics and Helsinki Institute of Physics, University of Helsinki, PO Box 43, FI-00014, Helsinki, Finland
| | - N Ishikawa
- Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki, 319-1195, Japan
| | - N Okubo
- Japan Atomic Energy Agency (JAEA), Tokai, Ibaraki, 319-1195, Japan
| | - Y Saitoh
- Takasaki Institute for Advanced Quantum Science, National Institutes for Quantum Science and Technology (QST), Takasaki, Gumma, 370-1292, Japan
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4
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Ito A, Nanjo Y, Kajiwara C, Shiozawa A, Urabe N, Homma S, Kishi K, Yamada K, Ishii Y, Tateda K. Intrinsic clarithromycin heteroresistance in Mycobacterium avium. J Infect Chemother 2024:S1341-321X(24)00051-5. [PMID: 38369123 DOI: 10.1016/j.jiac.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/05/2024] [Accepted: 02/14/2024] [Indexed: 02/20/2024]
Abstract
BACKGROUND Mycobacterium avium is associated with pulmonary disease in otherwise healthy adults. Several clarithromycin-refractory cases have been reported, including some cases caused by clarithromycin-susceptible strains. OBJECTIVES To characterize the reason for the discrepancy between clinical response and antibiotic susceptibility results. METHODS We conducted population analysis of clarithromycin-tolerant and heteroresistant subpopulations of M. avium cultured in vitro and in homogenates of infected lungs of mice. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were determined for 28 M. avium and two M. kansasii strains. Mice were intranasally infected with M. avium and treated with or without clarithromycin (100 mg/kg) thrice weekly. They were sacrificed on day 35 and the bacteria in lung homogenates were tested for clarithromycin resistance. Population analysis assays were performed based on colony growth on plates containing two-fold dilutions of clarithromycin. RESULTS The MBC/MIC ratios were ≥8 in all 28 strains of M. avium tested. In the population analysis assay, several colonies were observed on the plates containing clarithromycin concentrations above the MIC (2-64 mg/L). No growth of M. kansasii colonies was observed on the plates containing clarithromycin concentrations ≥2 mg/L. M. avium in the homogenates of infected lungs showed clearer clarithromycin-resistant subpopulations than in vitro, regardless of clarithromycin exposure. CONCLUSION M. avium shows intrinsic heterogeneous resistance (heteroresistance) to clarithromycin. This may explain the observed discrepancies between clarithromycin susceptibility testing results and clinical response to clarithromycin treatment. Further studies are needed to confirm a link between heteroresistance and clinical outcomes.
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Affiliation(s)
- Ai Ito
- Department of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Yuta Nanjo
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan; Department of Respiratory Medicine, Juntendo University School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| | - Chiaki Kajiwara
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Ayako Shiozawa
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Naohisa Urabe
- Department of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Sakae Homma
- Department of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Kazuma Kishi
- Department of Respiratory Medicine, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Kageto Yamada
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
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5
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Yamada K, Bixler B, Sakurai Y, Ashton PC, Sugiyama J, Arnold K, Begin J, Corbett L, Day-Weiss S, Galitzki N, Hill CA, Johnson BR, Jost B, Kusaka A, Koopman BJ, Lashner J, Lee AT, Mangu A, Nishino H, Page LA, Randall MJ, Sasaki D, Song X, Spisak J, Tsan T, Wang Y, Williams PA. The Simons Observatory: Cryogenic half wave plate rotation mechanism for the small aperture telescopes. Rev Sci Instrum 2024; 95:024504. [PMID: 38385955 DOI: 10.1063/5.0178066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/01/2024] [Indexed: 02/23/2024]
Abstract
We present the requirements, design, and evaluation of the cryogenic continuously rotating half-wave plate (CHWP) for the Simons Observatory (SO). SO is a cosmic microwave background polarization experiment at Parque Astronómico de Atacama in northern Chile that covers a wide range of angular scales using both small (⌀0.42 m) and large (⌀6 m) aperture telescopes. In particular, the small aperture telescopes (SATs) focus on large angular scales for primordial B-mode polarization. To this end, the SATs employ a CHWP to modulate the polarization of the incident light at 8 Hz, suppressing atmospheric 1/f noise and mitigating systematic uncertainties that would otherwise arise due to the differential response of detectors sensitive to orthogonal polarizations. The CHWP consists of a 505 mm diameter achromatic sapphire HWP and a cryogenic rotation mechanism, both of which are cooled down to ∼50 K to reduce detector thermal loading. Under normal operation, the HWP is suspended by a superconducting magnetic bearing and rotates with a constant 2 Hz frequency, controlled by an electromagnetic synchronous motor. We find that the number of superconductors and the number of magnets that make up the superconducting magnetic bearing are important design parameters, especially for the rotation mechanism's vibration performance. The rotation angle is detected through an angular encoder with a noise level of 0.07 μrad s. During a cooldown process, the rotor is held in place by a grip-and-release mechanism that serves as both an alignment device and a thermal path. In this paper, we provide an overview of the SO SAT CHWP: its requirements, hardware design, and laboratory performance.
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Affiliation(s)
- K Yamada
- Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - B Bixler
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
| | - Y Sakurai
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Chiba 277-8583, Japan
| | - P C Ashton
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Chiba 277-8583, Japan
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J Sugiyama
- Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - K Arnold
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
| | - J Begin
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA
| | - L Corbett
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - S Day-Weiss
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA
| | - N Galitzki
- Department of Physics, University of Texas at Austin, Austin, Texas 78722, USA
- Weinberg Institute for Theoretical Physics, Texas Center for Cosmology and Astroparticle Physics, Austin, Texas 78712, USA
| | - C A Hill
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - B R Johnson
- Department of Astronomy, University of Virginia, Charlottesville, Virginia 22904, USA
| | - B Jost
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Chiba 277-8583, Japan
| | - A Kusaka
- Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), UTIAS, The University of Tokyo, Chiba 277-8583, Japan
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - B J Koopman
- Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - J Lashner
- Wright Laboratory, Department of Physics, Yale University, New Haven, Connecticut 06520, USA
| | - A T Lee
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - A Mangu
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - H Nishino
- Research Center for the Early Universe, School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - L A Page
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA
| | - M J Randall
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
| | - D Sasaki
- Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - X Song
- Department of Physics, University of California, Berkeley, California 94720, USA
| | - J Spisak
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
| | - T Tsan
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
| | - Y Wang
- Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA
| | - P A Williams
- Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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6
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Mori T, Yoshizawa S, Yamada K, Sato T, Sasaki M, Nakamura Y, Gen U, Murakami H, Kashiwagi K, Maeda T, Miyazaki T, Yamaguchi T, Urita Y, Ishii Y, Tateda K. Pseudomonas otitidis bacteremia in an immunocompromised patient with cellulitis: case report and literature review. BMC Infect Dis 2023; 23:883. [PMID: 38110897 PMCID: PMC10726493 DOI: 10.1186/s12879-023-08919-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/14/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND Pseudomonas otitidis belongs to the genus Pseudomonas and causes various infections, including ear, skin, and soft tissue infections. P. otitidis has a unique susceptibility profile, being susceptible to penicillins and cephalosporins but resistant to carbapenems, due to the production of the metallo-β-lactamase called POM-1. This revealed genetic similarities with Pseudomonas aeruginosa, which can sometimes lead to misidentification. CASE PRESENTATION We report the case of a 70-year-old Japanese male who developed cellulitis and bacteremia during chemotherapy for multiple myeloma. He was initially treated with meropenem, but blood culture later revealed gram-negative bacilli identified as P. otitidis using matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS). Carbapenem resistance was predicted from previous reports; therefore, we switched to dual therapy with levofloxacin and cefepime, and favorable treatment results were obtained. CONCLUSION This is the first reported case of P. otitidis cellulitis and bacteremia in an immunocompromised patient. Carbapenems are typically used in immunocompromised patients and P. otitidis is often resistant to it. However, its biochemical properties are similar to those of Pseudomonas aeruginosa; therefore, its accurate identification is critical. In the present study, we rapidly identified P. otitidis using MALDI-TOF MS and switched from carbapenems to an appropriate antimicrobial therapy, resulting in a successful outcome.
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Affiliation(s)
- Takeo Mori
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Sadako Yoshizawa
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan.
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan.
- Department of Laboratory Medicine, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan.
| | - Kageto Yamada
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Takahiro Sato
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Yusuke Nakamura
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Ukyo Gen
- Department of Orthopaedic Surgery, Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Katsuhito Kashiwagi
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Tadashi Maeda
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
- Department of General Medicine and Emergency Care, Toho University School of Medicine, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Taito Miyazaki
- Department of General Medicine and Emergency Care (Infectious Diseases), Toho University Omori Medical Center, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
- Department of General Medicine and Emergency Care, Toho University School of Medicine, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Tetsuo Yamaguchi
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Yoshihisa Urita
- Department of General Medicine and Emergency Care, Toho University School of Medicine, 6-11-1 Omorinishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan
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7
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Namikawa H, Imoto W, Yamada K, Tochino Y, Kaneko Y, Kakeya H, Shuto T. Predictors for onset of extended-spectrum beta-lactamase-producing Escherichia coli-induced bacteraemia: a systematic review and meta-analysis. J Hosp Infect 2023; 142:88-95. [PMID: 37802238 DOI: 10.1016/j.jhin.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/18/2023] [Accepted: 09/21/2023] [Indexed: 10/08/2023]
Abstract
Extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli bacteraemia can induce unfavourable clinical outcomes due to delay in appropriate antimicrobial treatment and limited therapeutic options. Therefore, elucidating the predictors of ESBL-producing E. coli-induced bacteraemia is crucial to improve clinical outcomes. However, a literature search did not reveal any studies that incorporate a meta-analysis of the predictors of ESBL-producing E. coli-induced bacteraemia. As such, this review was undertaken to assess current evidence on the predictors of ESBL-producing E. coli-induced bacteraemia. PubMed, Web of Science and Cochrane Library databases were searched for all relevant publications from January 2000 to September 2021. This systematic review evaluated 10 observational studies, comprising a total of 2325 patients with E. coli-induced bacteraemia and 850 (36.6%) ESBL-producing strains. In the meta-analysis, previous antibiotic therapy [pooled risk ratio (RR) 2.72; P<0.001], especially with cephalosporins (pooled RR 4.66; P<0.001) and quinolones (pooled RR 5.47; P<0.001), and urinary catheter use (pooled RR 3.79; P<0.001) were predictive of ESBL-producing E. coli-induced bacteraemia. Antibiotic therapy for patients with the above-mentioned risk factors should be selected considering the possibility of ESBL-producing E. coli-induced bacteraemia compared with non-ESBL-producing E. coli-induced bacteraemia. It is important to elucidate whether appropriate modulation of the identified risk factors can potentially mitigate the risk of ESBL-producing E. coli-induced bacteraemia compared with non-ESBL-producing E. coli-induced bacteraemia.
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Affiliation(s)
- H Namikawa
- Department of Medical Education and General Practice, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan.
| | - W Imoto
- Department of Infection Control Science, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - K Yamada
- Department of Infection Control Science, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Research Centre for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Y Tochino
- Department of Medical Education and General Practice, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - Y Kaneko
- Research Centre for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan; Department of Bacteriology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - H Kakeya
- Department of Infection Control Science, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Research Centre for Infectious Disease Sciences, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - T Shuto
- Department of Medical Education and General Practice, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
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Saito T, Shikama N, Takahashi T, Nakamura N, Aoyama H, Nakajima K, Koizumi M, Sekii S, Ebara T, Kiyohara H, Higuchi K, Yorozu A, Nishimura T, Ejima Y, Harada H, Araki N, Miwa M, Yamada K, Kawamoto T, Onishi H, Imano N. Quality of Palliative Radiation Therapy Assessed Using Quality Indicators: A Multicenter Survey. Int J Radiat Oncol Biol Phys 2023; 117:e111. [PMID: 37784649 DOI: 10.1016/j.ijrobp.2023.06.890] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Clinical practice is not always performed in accordance with guideline recommendations. Quality indicators (QIs) are valuable tools for evaluating the quality of healthcare systems. We sought to identify potential gaps between clinical practice and evidence using QIs previously developed using a modified Delphi method. MATERIALS/METHODS We used seven QIs (Table 1) to assess the quality of radiation therapy for bone (BoM) and brain metastases (BrM) at 29 centers; 13 (45%) were academic (12 university hospitals and 1 cancer center) and 16 (55%) were nonacademic hospitals. Compliance rate was calculated as the percentage of patients for whom recommended medical care was conducted. Random effects models were used to estimate pooled compliance rates. Mixed effects models with a Q test were used to compare compliance rates between academic and nonacademic centers. RESULTS The estimates of the compliance rates with 95% confidence intervals are presented in Table 1. For BoM-1, the compliance rate was higher in academic hospitals (100% [100-100%]) than in non-academic hospitals (96% [89-100%]) (P = 0.021). For BrM-3, the compliance rate was lower in academic hospitals (92% [81-99%]) than in nonacademic hospitals (100% [98-100%]) (P = 0.016). CONCLUSION A quality assessment based on these seven QIs is feasible. Overall, compliance rates were high; however, for BoM-3, the practice remains to be improved in some centers. Based on BoM-4 compliance rates, steroids are infrequently used concurrently with radiation therapy for malignant spinal cord compression. Extended fractionation for BoM was less frequently performed in academic than in nonacademic centers. The initiation of radiation therapy for brain metastases was more frequently delayed in academic than in nonacademic centers.
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Affiliation(s)
- T Saito
- Department of Radiation Oncology, Arao Municipal Hospital, Kumamoto, Japan
| | - N Shikama
- Division of Radiation Oncology, Department of Radiology, Juntendo University School of Medicine, Tokyo, Japan
| | - T Takahashi
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - N Nakamura
- Department of Radiation Oncology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - H Aoyama
- Department of Radiation Oncology, Faculty and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - K Nakajima
- Asahikawa Medical College, Asahikawa, Japan
| | - M Koizumi
- Department of Medical Physics and Engineering, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - S Sekii
- Kita-Harima Medical Center, Hyogo, Japan
| | - T Ebara
- Department of Radiation Oncology, Kyorin University, Mitaka, Tokyo, Japan
| | - H Kiyohara
- Department of Radiation Oncology, Japanese Red Cross Maebashi Hospital, Gunma, Japan
| | - K Higuchi
- Department of Radiation Oncology, Isesaki Municipal Hospital, Gunma, Japan
| | - A Yorozu
- Department of Radiation Oncology, National Hospital Organization, Tokyo Medical Center, Tokyo, Japan
| | - T Nishimura
- Department of Radiology, Fukuchiyama City Hospital, Kyoto, Japan
| | - Y Ejima
- Department of Radiology, Dokkyo Medical University, Koshigaya, Japan
| | - H Harada
- Radiation and Proton Therapy Center, Shizuoka Cancer Center, Shizuoka, Japan
| | - N Araki
- Department of Radiology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - M Miwa
- Department of Radiation Oncology, Sendai Kousei Hospital, Sendai, Japan
| | - K Yamada
- Department of Radiation Oncology, Seirei Mikatahara General Hospital, Hamamatsu, Japan
| | - T Kawamoto
- Division of Radiation Oncology, Department of Radiology, Juntendo University School of Medicine, Tokyo, Japan
| | - H Onishi
- University of Yamanashi, Chuo, Japan
| | - N Imano
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
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Yamada K, Ishii Y, Tateda K. Diversity of blaL1-like genes in Stenotrophomonas species: insights from genome analysis of publicly available genome sequences. Antimicrob Agents Chemother 2023; 67:e0067323. [PMID: 37584548 PMCID: PMC10508171 DOI: 10.1128/aac.00673-23] [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: 05/21/2023] [Accepted: 06/26/2023] [Indexed: 08/17/2023] Open
Abstract
L1 metallo-β-lactamases produced by Stenotrophomonas maltophilia exhibit high diversity. Here, we characterized the genomes of Stenotrophomonas species harboring blaL1-like genes using publicly available genome sequences. Our findings provide evidence that Stenotrophomonas species with blaL1-like genes constitute a complex comprising many species with high genetic diversity, and similarities between blaL1-like genes are lower than those of the genome. This suggests that the diversity of blaL1-like is attributable to species diversity in Stenotrophomonas species harboring blaL1-like and the rapid evolutionary changes in blaL1-like genes.
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Affiliation(s)
- Kageto Yamada
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Tokyo, Japan
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Ogihara S, Komori K, Miura S, Aoki K, Yamada K, Sasaki M, Murakami H, Ishii Y, Tateda K. Whole-Genome Sequencing of the Novel Pseudomonas Strain TUM22785 Harboring blaPAM-1, Isolated from a Patient with Urinary Tract Infection in Japan. Microbiol Resour Announc 2023:e0014823. [PMID: 37249473 DOI: 10.1128/mra.00148-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Pseudomonas species are Gram-negative aerobic bacteria that cause opportunistic infections. Here, we report the whole-genome sequence of the Pseudomonas sp. strain TUM22785, isolated from an outpatient with a urinary tract infection at a medical institution in Japan. This strain harbors a metallo-β-lactamase (MBL) blaPAM-1 gene.
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Affiliation(s)
- Shinji Ogihara
- Department of Clinical Laboratory, Toho University Omori Medical Center, Ota-ku, Tokyo, Japan
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Kohji Komori
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Shota Miura
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Kageto Yamada
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Center, Ota-ku, Tokyo, Japan
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Center, Ota-ku, Tokyo, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Diseases, Toho University School of Medicine, Ota-ku, Tokyo, Japan
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11
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Tsuji Y, Miura H, Hirota T, Ota Y, Yamashita M, Asai S, Fujihara A, Hongo F, Ukimura O, Yamada K. Transarterial ethiodised oil marking before CT-guided renal cryoablation: evaluation of tumour visibility in various renal cell carcinoma subtypes. Clin Radiol 2023; 78:279-285. [PMID: 36710120 DOI: 10.1016/j.crad.2022.12.010] [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] [Received: 08/03/2022] [Revised: 12/06/2022] [Accepted: 12/17/2022] [Indexed: 01/15/2023]
Abstract
AIM To evaluate ethiodised oil retention of transarterial embolisation using ethiodised oil (ethiodised oil marking) before computed tomography (CT)-guided percutaneous cryoablation (PCA) according to renal cell carcinoma (RCC) subtype. MATERIALS AND METHODS Ethiodised oil marking was performed 1-3 days before PCA in 99 patients with 99 RCCs from 2016 to 2020. Ethiodised oil retention on CT images was evaluated retrospectively and CT attenuation values in the tumour were measured. Regions of interest (ROI) were placed on the tumours to calculate: average (ROI-average), maximal (ROI-max), minimum (ROI-min), and standard deviation (ROI-SD). Qualitative scores comprising a five-point scale (5, excellent; 1, poor) were evaluated for the retention scores (RS) of ethiodised oil in the tumour (ethiodised oil-RS) and the visualisation scores (VS) of the boundary between the tumour and renal parenchyma (boundary-VS). RESULTS The histological subtypes comprised clear cell (ccRCC; n=85), papillary (pRCC; n=6), and chromophobe/oncocytoma renal cell carcinoma (chrRCC; n=8). The mean ROI-average, ROI-max, and ROI-SD were significantly higher in ccRCCs than in chrRCCs and pRCCs (p<0.05). The mean ethiodised oil-RS was significantly lower in pRCCs than in ccRCCs (p=0.039), and the mean boundary-VS was >4 in all subtypes. Even with poor intratumour ethiodised oil retention (n=6), sufficient boundary-VS was obtained due to "inverted marking." All PCA procedures were completed without additional intravenous contrast material injection at the time of PCA. CONCLUSION Regardless of the tumour subtypes, ethiodised oil marking aids in visualising the boundary between the tumour and parenchyma on non-contrast CT in PCA.
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Affiliation(s)
- Y Tsuji
- Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan.
| | - H Miura
- Department of Radiology, Kyoto Second Red Cross Hospital, 355-5 Haruobi-cho, Kamigyo-ku, Kyoto, Japan
| | - T Hirota
- Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
| | - Y Ota
- Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
| | - M Yamashita
- Department of Radiology, Kyoto First Red Cross Hospital, 15-749 Hon-machi, Higashiyama-ku, Kyoto, Japan
| | - S Asai
- Department of Radiology, Fukuchiyama City Hospital, 231 Atsunaka-machi, Fukuchiyama City, Kyoto, Japan
| | - A Fujihara
- Department of Urology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
| | - F Hongo
- Department of Urology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
| | - O Ukimura
- Department of Urology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
| | - K Yamada
- Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kamigyo-ku, Kyoto, Japan
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Yamada K, Takata T, Anoushiravani A, Campos L, Graham T, Kotoku J, Farsad K. Abstract No. 53 Image Quality Improvement for Digital Subtraction Angiography (DSA) around High-Density Obstacles Using Deep Learning: A Bench-Top Study. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.096] [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: 02/27/2023] Open
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13
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Namikawa H, Oinuma KI, Yamada K, Kaneko Y, Kakeya H, Shuto T. Predictors of hypervirulent Klebsiella pneumoniae infections: a systematic review and meta-analysis. J Hosp Infect 2023; 134:153-160. [PMID: 36813165 DOI: 10.1016/j.jhin.2023.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 01/26/2023] [Accepted: 02/08/2023] [Indexed: 02/24/2023]
Abstract
BACKGROUND Hypervirulent Klebsiella pneumoniae (hvKp) infections confer notable morbidity and mortality. Differential diagnosis to determine whether the infections are caused by either the hvKp or classical K. pneumoniae (cKp) strain is particularly important for undertaking optimal clinical care and infection control efforts. AIM To identify and assess the potential predictors of hvKp infections. METHODS PubMed, Web of Science, and Cochrane Library databases were searched for all relevant publications from January 2000 to March 2022. The search terms included a combination of the following terms: (i) Klebsiella pneumoniae or K. pneumoniae and (ii) hypervirulent or hypervirulence. A meta-analysis of factors for which risk ratio was reported in three or more studies was conducted, and at least one statistically significant association was identified. FINDINGS In this systematic review of 11 observational studies, a total of 1392 patients with K. pneumoniae infection and 596 (42.8%) with hvKp strains were evaluated. In the meta-analysis, diabetes mellitus and liver abscess (pooled risk ratio: 2.61 (95% confidence interval: 1.79-3.80) and 9.04 (2.58-31.72), respectively; all P < 0.001) were predictors of hvKp infections. CONCLUSION For patients with a history of the abovementioned predictors, prudent management, including the search for multiple sites of infection and/or metastatic spread and the enforcement of an early and appropriate source control procedure, should be initiated in consideration of the potential presence of hvKp. We believe that this research highlights the urgent need for increasing clinical awareness of the management of hvKp infections.
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Affiliation(s)
- H Namikawa
- Department of Medical Education and General Practice, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan.
| | - K-I Oinuma
- Department of Bacteriology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - K Yamada
- Research Center for Infectious Disease Sciences, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Department of Infection Control Science, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - Y Kaneko
- Department of Bacteriology, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Research Center for Infectious Disease Sciences, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - H Kakeya
- Research Center for Infectious Disease Sciences, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan; Department of Infection Control Science, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
| | - T Shuto
- Department of Medical Education and General Practice, Osaka Metropolitan University, Graduate School of Medicine, Osaka, Japan
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Yamada K, Iwata K, Yoshimura Y, Ota H, Oki Y, Mitani Y, Oki Y, Yamada Y, Yamamoto A, Ono K, Honda A, Kitai T, Tachikawa R, Kohara N, Tomii K, Ishikawa A. Predicting the Readmission and Mortality in Older Patients Hospitalized with Pneumonia with Preadmission Frailty. J Frailty Aging 2023; 12:208-213. [PMID: 37493381 DOI: 10.14283/jfa.2022.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
BACKGROUND In older people, frailty has been recognized as an important prognostic factor. However, only a few studies have focused on multidimensional frailty as a predictor of mortality and readmission among inpatients with pneumonia. OBJECTIVE The present study aimed to assess the association between preadmission frailty and clinical outcomes after the hospitalization of older patients with pneumonia. DESIGN Single-center, retrospective case-control study. SETTING Acute phase hospital at Kobe, Japan. PARTICIPANTS The present study included 654 consecutive older inpatients with pneumonia. MEASUREMENTS Frailty status before admission was assessed using total Kihon Checklist (KCL) score, which has been used as a self-administered questionnaire to assess comprehensive frailty, including physical, social, and cognitive status. The primary outcome was a composited 6-month mortality and readmission after discharge. RESULTS In total, 330 patients were analyzed (median age: 79 years, male: 70.4%, median total KCL score: 10 points), of which 68 were readmitted and 10 died within 6 months. After multivariate analysis, total KCL score was associated with a composited 6-month mortality and readmission (adjusted hazard ratio, 1.07; 95% confidence interval, 1.02-1.12; p = 0.006). The cutoff value for total KCL score determined by receiver operating characteristic curve analysis was 15 points (area under the curve = 0.610). The group with a total KCL score ≥ 15 points had significantly higher readmission or mortality rates than the groups with a total KCL score < 15 points (p < 0.001). CONCLUSIONS Preadmission frailty status in older patients with pneumonia was an independent risk factor for readmission and survival after hospitalization.
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Affiliation(s)
- K Yamada
- Kentaro Iwata, PT, MSc, Department of Rehabilitation, Kobe City Medical Center General Hospital, 2-1-1, Minatojimaminami, Chuo, Kobe 650-0047 Hyogo, Japan. Tel.: +81 78 302,
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15
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Kawamoto T, Saito T, Kosugi T, Nakamura N, Wada H, Tonari A, Ogawa H, Mitsuhashi N, Yamada K, Takahashi T, Ito K, Sekii S, Araki N, Nozaki M, Heianna J, Murotani K, Hirano Y, Satoh A, Onoe T, Shikama N. Temporal Profiles of Symptom Scores After Palliative Radiotherapy for Bleeding Gastric Cancer With Adjustment for the Palliative Prognostic Index: An Exploratory Analysis of a Multicentre Prospective Observational Study (JROSG 17-3). Clin Oncol (R Coll Radiol) 2022; 34:e505-e514. [PMID: 35654667 DOI: 10.1016/j.clon.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/12/2022] [Accepted: 05/12/2022] [Indexed: 01/31/2023]
Abstract
AIMS Although palliative radiotherapy for gastric cancer may improve some symptoms, it may also have a negative impact due to its toxicity. We investigated whether symptoms improved after radiotherapy with adjustment for the Palliative Prognostic Index (PPI) considering that patients with limited survival tend to experience deterioration of symptoms. MATERIALS AND METHODS This study was an exploratory analysis of the Japanese Radiation Oncology Study Group study (JROSG 17-3). We assessed six symptom scores (nausea, anorexia, fatigue, shortness of breath, pain at the irradiated area and distress) at registration and 2, 4 and 8 weeks thereafter. We tested whether symptoms linearly improved after adjusting for the baseline PPI. Shared parameter models were used to adjust for potential bias in missing data. RESULTS The present study analysed all 55 patients enrolled in JROSG 17-3. With time from registration as the only explanatory variable in the model, a significant linear decrease was observed in shortness of breath, pain and distress (slopes, -0.26, -0.22 and -0.19, respectively). Given that the interaction terms (i.e. PPI × time) were not significantly associated with symptom scores in any of the six symptoms, only PPI was included as the main effect in the final multivariable models. After adjusting for the PPI, shortness of breath, pain and distress significantly improved (slope, -0.25, -0.19 and -0.17; P < 0.001, 0.002 and 0.047, respectively). An improvement in fatigue and distress was observed only in patients treated with a biologically effective dose ≤14.4 Gy. CONCLUSION Shortness of breath, pain and distress improved after radiotherapy. Moreover, a higher PPI was significantly associated with higher symptom scores at all time points, including baseline. In contrast, PPI did not seem to influence the improvement of these symptoms. Regardless of the expected survival, patients receiving radiotherapy for gastric cancer can expect an improvement in shortness of breath, pain and distress over 8 weeks. Multiple-fraction radiotherapy might hamper the improvement in fatigue and distress by its toxicity or treatment burden.
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Affiliation(s)
- T Kawamoto
- Division of Radiation Oncology, Department of Radiology, Juntendo University School of Medicine, Tokyo, Japan.
| | - T Saito
- Department of Radiation Oncology, Arao Municipal Hospital, Kumamoto, Japan
| | - T Kosugi
- Department of Radiation Oncology, Fujieda Municipal General Hospital, Shizuoka, Japan
| | - N Nakamura
- Department of Radiology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - H Wada
- Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Fukushima, Japan
| | - A Tonari
- Department of Radiation Oncology, Kyorin University Hospital, Tokyo, Japan
| | - H Ogawa
- Division of Radiation Therapy, Shizuoka Cancer Center, Shizuoka, Japan
| | - N Mitsuhashi
- Radiation Therapy Center, Hitachi Ltd, Hitachinaka General Hospital, Ibaraki, Japan
| | - K Yamada
- Department of Radiation Oncology, Seirei Mikatahara General Hospital, Shizuoka, Japan
| | - T Takahashi
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - K Ito
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Tokyo, Japan
| | - S Sekii
- Department of Radiation Oncology, Kita-Harima Medical Center, Hyogo, Japan
| | - N Araki
- Department of Radiation Oncology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - M Nozaki
- Department of Radiology, Saitama Medical Center, Dokkyo Medical University, Saitama, Japan
| | - J Heianna
- Department of Radiology, Nanbu Tokushukai Hospital, Okinawa, Japan
| | - K Murotani
- Biostatistics Center, Kurume University, Fukuoka, Japan
| | - Y Hirano
- Department of Radiology, Saitama Medical Center, Dokkyo Medical University, Saitama, Japan
| | - A Satoh
- Department of Surgery, Southern Tohoku General Hospital, Fukushima, Japan
| | - T Onoe
- Division of Radiation Therapy, Shizuoka Cancer Center, Shizuoka, Japan
| | - N Shikama
- Division of Radiation Oncology, Department of Radiology, Juntendo University School of Medicine, Tokyo, Japan
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Kawamoto T, Saito T, Kosugi T, Nakamura N, Wada H, Tonari A, Ogawa H, Mitsuhashi N, Yamada K, Takahashi T, Ito K, Sekii S, Araki N, Nozaki M, Heianna J, Murotani K, Hirano Y, Satoh A, Onoe T, Shikama N. Temporal Profiles of Symptom Scores after Palliative Radiotherapy for Bleeding Gastric Cancer with the Adjustment for the Palliative Prognostic Index: An Exploratory Analysis of a Multicenter Prospective Observational Study (JROSG 17-3). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1672] [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: 10/31/2022]
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17
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Imoto W, Yamada K, Kakeya H. Long COVID with intracranial microangiopathy. QJM 2022; 115:539. [PMID: 35703982 DOI: 10.1093/qjmed/hcac139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - H Kakeya
- Department of Infection Control Science, Osaka Metropolitan University Graduate School of Medicine, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
- Department of Infectious Disease Medicine, Osaka Metropolitan University Hospital, Osaka 545-8586, Japan
- Department of Infection Control and Prevention, Osaka Metropolitan University Hospital, Osaka 545-8586, Japan
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Yamada K, Yoshizumi A, Nagasawa T, Aoki K, Sasaki M, Murakami H, Morita T, Ishii Y, Tateda K. Molecular and biochemical characterization of novel PAM-like MBL variants, PAM-2 and PAM-3, from clinical isolates of Pseudomonas tohonis. J Antimicrob Chemother 2022; 77:2414-2418. [PMID: 35786775 DOI: 10.1093/jac/dkac210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There is no comprehensive study on PAM-like MBLs. OBJECTIVES Our aim was to characterize novel B3 MBL variants, PAM-2 and PAM-3, from Pseudomonas tohonis clinical isolates. METHODS We evaluated the antimicrobial susceptibility and the MBL gene composition of three novel P. tohonis clinical isolates identified at a Japanese hospital, using the broth microdilution method and WGS, respectively. We characterized the PAM-2 and PAM-3 proteins using recombinant protein expression and biochemical evaluations. RESULTS Low carbapenem MICs (meropenem MIC = 0.125-1 mg/L) were observed for all three P. tohonis isolates; however, the isolates produced MBLs. We identified blaPAM-2 and blaPAM-3 as potential genes, belonging to a novel subclass of B3 MBLs. Their genomic sequence was similar to that of blaPAM-1 from Pseudomonas alcaligenes. PAM-2 and PAM-3 comprised 287 amino acids and exhibited 90% amino acid identity with PAM-1, 73% identity with POM-1 from Pseudomonas otitidis and 61% identity with L1 from Stenotrophomonas maltophilia. Biochemical evaluations of recombinant PAM-2 and PAM-3 revealed similar kcat/Km ratios and demonstrated catalytic activity against all the tested β-lactams, except for aztreonam. In addition, the kcat/Km ratio for imipenem was 40-fold lower than that for meropenem. CONCLUSIONS P. tohonis harbours a species-specific PAM-family MBL gene. This enzyme has higher hydrolytic activity against meropenem compared with that against imipenem.
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Omori Medical Centre, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan.,Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Ayumi Yoshizumi
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Tatsuya Nagasawa
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Centre, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan.,Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Centre, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University School of Medicine, 5-21-6 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
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Ishihama Y, Fukumoto K, Watanabe R, Nakatani S, Tsuda A, Otoshi T, Yamada K, Yamada S, Negoro N, Emoto M, Hashimoto M. Retroperitoneal fibrosis requiring prompt nephrostomy in a case with immunoglobulin A vasculitis. Scand J Rheumatol 2022; 51:419-421. [PMID: 35658823 DOI: 10.1080/03009742.2022.2047312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Y Ishihama
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Fukumoto
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - R Watanabe
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S Nakatani
- Department of Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Tsuda
- Department of Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Otoshi
- Department of Urology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Yamada
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S Yamada
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - N Negoro
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Emoto
- Department of Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Hashimoto
- Department of Clinical Immunology, Osaka City University Graduate School of Medicine, Osaka, Japan
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Tsuge S, Fujii H, Tamai M, Mizushima I, Yoshida M, Suzuki N, Takahashi Y, Takeji A, Horita S, Fujisawa Y, Matsunaga T, Zoshima T, Nishioka R, Nuka H, Hara S, Tani Y, Suzuki Y, Ito K, Yamada K, Nakazaki S, Kawakami A, Kawano M. POS1339 FACTORS RELATED TO SERUM IgG4 ELEVATION AND DEVELOPMENT OF IgG4-RELATED DISEASE: DATA FROM RESIDENT EXAMINATION. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundElevated serum IgG4 levels are one of the characteristic findings in immunoglobulin G4 (IgG4)-related disease (IgG4-RD). Serum IgG4 levels have an impact to a certain extent on the diagnosis of IgG4-RD although there are some issues in their sensitivity and specificity. In the reports from Japan, China, USA, and Europe, elevated serum IgG4 levels were reported to be observed in 83-97% of patients with IgG4-RD [1-5]. In the past investigations of hospital patients, some studies reported that 10-15% of hospital patients with elevated serum IgG4 levels had IgG4-RD [6,7]. However, in general adults with no symptom, investigations of prevalence of elevated serum IgG4 levels and/or IgG4-RD have rarely been conducted.ObjectivesThis study aimed to investigate the frequency of serum IgG4 elevation in the general Japanese population and its associated factors using data from resident examinations.MethodsWe measured the serum IgG4 levels in 1,204 residents who underwent a general medical examination in Ishikawa prefecture, Japan. Logistic regression analysis was used to search for factors related to elevated serum IgG4 levels. Secondary examinations were conducted for participants in whom elevation was identified.ResultsThe mean serum IgG4 level was 44 mg/dL, and elevated serum IgG4 levels were observed in 42 patients (3.5%). Univariate logistic regression analyses showed that male sex, older age, lower estimated glomerular filtration rates based on cystatin C (eGFR-CysC), serum high-density lipoprotein cholesterol levels, and higher hemoglobin A1c (HbA1c) levels were associated with elevated serum IgG4 levels. Subgroup analyses in men showed that older age, lower eGFR-CysC levels, and higher serum HbA1c levels were associated with elevated serum IgG4 levels. In contrast, the analyses in women found no significant factors. One of the 10 residents who underwent secondary examinations was diagnosed with possible IgG4-related retroperitoneal fibrosis.ConclusionIn the general population, elevated serum IgG4 levels are more common in elderly men, which is similar to the epidemiological features of IgG4-RD.References[1]Inoue D, et al. IgG4-related disease: dataset of 235 consecutive patients. Medicine (Baltimore). 2015;94(15):e680.[2]Yamada K, et al. New clues to the nature of immunoglobulin G4-related disease: a retrospective Japanese multicenter study of baseline clinical features of 334 cases. Arthritis Res Ther. 2017;19(1):262[3]Culver EL, et al. Elevated serum IgG4 levels in diagnosis, treatment response, organ involvement, and relapse in a prospective IgG4-related disease UK cohort. Am J Gastroenterol 2016;111:733–43.[4]Lin W, et al. Clinical characteristics of immunoglobulin G4-related disease: a prospective study of 118 Chinese patients. Rheumatology (Oxford). 2015;54(11):1982–90.[5]Carruthers MN, et al. The diagnostic utility of serum IgG4 concentrations in IgG4-related disease. Ann Rheum Dis 2015;74:14-18.[6]James Yun, et al. Poor positive predictive value of serum immunoglobulin G4 concentrations in the diagnosis of immunoglobulin G4-related sclerosing disease. Asia Pac Allergy. 2014 Jul;4(3):172-176.[7]Taiwo N Ngwa, et al. Sreum immunoglobulin G4 level is a poor predictor of immunoglobulin G4–related disease. Pancreas. 2014 Jul;43(5):704-7.Disclosure of InterestsNone declared
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Yamada K, Sakai T, Mizushima I, Hoshiba R, Suzuki F, Mizutomi K, Kawano M, Masaki Y. POS0615 CLINICAL DEMOGRAPHICS AND FACTORS AFFECTING DRYNESS IN PATIENTS WITH RHEUMATOID ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundSjogren’s syndrome (SS) is known to coexist with rheumatoid arthritis (RA). However, the prevalence of RA with SS varies widely, from 2.4% to 30%, and some patients with RA without SS also show dryness. The prevalence and clinical demographics of dryness in patients with RA are not well recognized.ObjectivesThe aim of this study was to clarify the prevalence, clinical demographics, and related factors of dryness in patients with RA who have not been diagnosed with (SS).MethodsWe enrolled 166 patients with RA (129 females, 37 males; mean age 65.8±14.3 years; disease duration 14.1±10.9 years; DAS28-CRP 2.30±0.92) who were not diagnosed with SS. We analyzed CRP, the estimated glomerular filtration rate (eGFR), RF, anti-CCP antibody, antinuclear antibody, anti-SS-A antibody (SSA), and disease activity score (DAS) 28-CRP, and identified treatments for RA. We used each question item of the EULAR SS Patient Reported Index (ESSPRI) to clarify dryness, somatic and mental fatigue, and pain. History of smoking, comorbidities, such as interstitial pneumonia, fibromyalgia, and psychiatric disorders, and narcotic and/or psychotropic medication use were determined from the medical records. We defined patients with dryness as greater than or equal to one point, and those with severe dryness as greater than or equal to five points, of the visual analog scale (VAS).ResultsDryness was observed in 93/166 (56.0%) patients and severe dryness was identified in 57/166 (34.4%) patients, and SSA was positive in 23/139 patients(13.9%). We divided our patients into dryness and non-dryness groups and compared their clinical demographics. The dryness group was relatively younger (64.0±14.5 vs. 68.1±13.8 years, p=0.052), had a female predominance (89.2% vs. 63.0%, p<0.001), had severe fatigue (4.06±2.59 vs 2.60±2.78, p<0.001), and had severe pain (3.52±2.41 vs. 2.73±2.32, p=0.020). However, the prevalence of SSA did not significantly differ in this cohort, compared with the non-dryness group (19.3% vs. 11.8%, p=0.248). Next, we analyzed the clinical characteristics of the patients with severe dryness. The severe dryness group was younger (61.9±15.5 vs. 67.9±13.2 years, p=0.022), had higher eGFR (76.1±15.5 vs. 68.9±22.7, p=0.020), had more severe fatigue (4.89±2.42 vs. 2.85±2.63), p<0.001), and had more severe pain (4.16±2.51 vs. 2.65±2.18, p<0.001), compared with non-severe dryness group. The prevalence of SSA was also significantly higher in the severe dryness group (91.2% vs. 70.6%, p=0.002). We then performed a multifactorial analysis using logistic regression analysis with a stepwise method. Female sex (OR 3.739, 1.247-11.207) and VAS of fatigue (OR 1.269, 1.054-1.526) were found to independently relate to dryness.ConclusionMore than half of the patients with RA had dryness, although only 13.9% of patients were SSA positive. Dryness was related to female predominance and fatigue. Simon et al. reported that SS was found in 2.42% of patients with RA (1). On the other hand, Harrold et al. reported that SS was found in 30% of patients with RA, and the prevalence of SS increased with duration of RA (2). Our data indicate that patients with fatigue, regardless of pain, tend to have dryness, which may be a key factor in diagnosing SS in patients with RA.References[1]Simon TA, Kawabata H, Ray N, et.al. Prevalence of Co-existing Autoimmune Disease in Rheumatoid Arthritis: A Cross-Sectional Study. Adv Ther. 2017 Nov;34(11):2481-2490.[2]Harrold LR, Shan Y, Rebello S, et al. Prevalence of Sjögren’s syndrome associated with rheumatoid arthritis in the USA: an observational study from the Corrona registry. Clin Rheumatol. 2020 Jun;39(6):1899-1905.Disclosure of InterestsNone declared
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Li N, Ferracane J, Lewis S, Andeen N, Woltjer R, Farsad K, Kaufman J, Rugonyi S, Jahangiri Y, Uchida B, Gabr A, Li J, Yamada K, Al-Hakim R. Abstract No. 299 Impact of post-thrombotic vein wall biomechanics on luminal flow during venous angioplasty and stent placement: computational modeling results. J Vasc Interv Radiol 2022. [DOI: 10.1016/j.jvir.2022.03.380] [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] Open
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Suzuki T, Kawano Y, Matsumoto A, Kondo M, Funayama K, Tanemura S, Miyashiro M, Nishi A, Yamada K, Tsuda M, Sato A, Morokuma K, Yamamoto Y. Melanogenic effect of dersimelagon (MT-7117), a novel oral melanocortin 1 receptor agonist. Skin Health Dis 2022; 2:e78. [PMID: 35665216 PMCID: PMC9060023 DOI: 10.1002/ski2.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 12/12/2022]
Abstract
Background The activation of melanocortin 1 receptor (MC1R) on melanocytes stimulates the production of eumelanin. A tridecapeptide α melanocyte‐stimulating hormone (αMSH) is known to induce skin pigmentation. Objectives We characterised the properties of a novel oral MC1R agonist dersimelagon (MT‐7117) with respect to its specific binding to MC1R, downstream signalling and eumelanin production in experimental models. Methods The competitive binding and production of intracellular cyclic adenosine 3′, 5′‐monophosphate in cells expressing recombinant melanocortin receptors were examined. A mouse melanoma cell line B16F1 was used for the evaluation of in vitro melanin production. The in vitro activity of MT‐7117 was determined with αMSH and [Nle4, D‐Phe7]‐αMSH (NDP‐αMSH) as reference comparators. The change of coat colour and skin pigmentation were evaluated after repeat administration of MT‐7117 by oral gavage to C57BL/6J‐Ay/+ mice and cynomolgus monkeys, respectively. Results MT‐7117 showed the highest affinity for human MC1R compared to the other melanocortin receptors evaluated and agonistic activity for human, cynomolgus monkey and mouse MC1R, with EC50 values in the nanomolar range. In B16F1 cells, MT‐7117 increased melanin production in a concentration‐dependent manner. In vivo, MT‐7117 (≥0.3 mg/kg/day p.o.) significantly induced coat colour darkening in mice. MT‐7117 (≥1 mg/kg/day p.o.) induced significant skin pigmentation in monkeys and complete reversibility was observed after cessation of its administration. Conclusions MT‐7117 is a novel oral MC1R agonist that induces melanogenesis in vitro and in vivo, suggesting its potential application for the prevention of phototoxic reactions in patients with photodermatoses, such as erythropoietic protoporphyria and X‐linked protoporphyria.
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Affiliation(s)
- T Suzuki
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - Y Kawano
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - A Matsumoto
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - M Kondo
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - K Funayama
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - S Tanemura
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - M Miyashiro
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - A Nishi
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - K Yamada
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - M Tsuda
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - A Sato
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - K Morokuma
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
| | - Y Yamamoto
- Sohyaku Innovative Research Division Mitsubishi Tanabe Pharma Corporation Yokohama Japan
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Yamada K, Sasaki M, Aoki K, Nagasawa T, Murakami H, Ishii M, Shibuya K, Morita T, Ishii Y, Tateda K. Pseudomonas tohonis sp. nov., isolated from the skin of a patient with burn wounds in Japan. Int J Syst Evol Microbiol 2021; 71. [PMID: 34762579 DOI: 10.1099/ijsem.0.005115] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strain TUM18999T was isolated from the skin of a patient with burn wounds in Japan. The strain was successfully cultured at 20-42 °C (optimum, 30-35 °C) in 1.0-4.0% NaCl (w/v) and at pH 5.5-9.5, optimum pH 5.5-8.5. The phylogenetic tree reconstructed using 16S rRNA, gyrB, rpoB and rpoD gene sequences indicated that strain TUM18999T is closely related to Pseudomonas otitidis MCC10330T. Although the partial 16S rRNA gene sequence (1412 bp) of TUM18999T exhibits high similarity to those of Pseudomonas alcaligenes NBRC 14159T (99.08 %) and Pseudomonas otitidis MCC10330T (98.51 %), multi-locus sequence analysis using 16S rRNA, gyrB, rpoB and rpoD genes reveals a clear distinction between TUM18999T and other Pseudomonas species. In addition, an average nucleotide identity >90 % was not observed in the P. aeruginosa group. Moreover, TUM18999T and P. otitidis can be distinguished based on the minimum inhibitory concentration for carbapenem. Meanwhile, the cellular fatty acids are enriched with C18 : 1 ω7c/C18 : 1 ω6c (34.35 %), C16 : 1 ω7c/C16 : 1 ω6c (24.22 %), C16 : 0 (19.79 %) and C12 : 0 (8.25 %). Based on this evidence, strain TUM18999T can be defined as representing a novel Pseudomonas species, with the proposed name Pseudomonas tohonis sp. nov. The type strain is TUM18999T (GTC 22698T=NCTC 14580T).
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan.,Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan.,Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Tatsuya Nagasawa
- Department of Clinical Laboratory, Juntendo University Hospital, 3-1-3, Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Mayumi Ishii
- Department of Pathology, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Kazutoshi Shibuya
- Department of Pathology, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University School of Medicine, 5-21-6 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
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Saito T, Kosugi T, Nakamura N, Wada H, Tonari A, Ogawa H, Mitsuhashi N, Yamada K, Takahashi T, Sekii S, Karasawa K, Araki N, Nozaki M, Heianna J, Murotani K, Hirano Y, Satoh A, Onoe T, Watakabe T, Shikama N. Assessment of Treatment Response and Re-Bleeding After Palliative Radiation Therapy for Bleeding Gastric Cancer: A Longitudinal Multicenter Prospective Observational Study. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Turri M, Pavanello C, Ossoli A, Strazzella A, Simonelli S, Laurenzi T, Kono K, Yamada K, Kiyosawa N, Eberini I, Calabresi L. Activation of naturally occurring lecithin:Cholesterol acyltransferase mutants by a novel activator compound. Atherosclerosis 2021. [DOI: 10.1016/j.atherosclerosis.2021.06.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hara N, Isobe A, Yamada K, Kosugi Y, Oshima M, Kawamoto T, Shikama N, Sasai K. Unusual visual and olfactory perceptions during radiotherapy sessions: an investigation of the organs responsible. J Radiat Res 2021; 62:718-725. [PMID: 33912958 PMCID: PMC8273799 DOI: 10.1093/jrr/rrab033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 02/12/2021] [Indexed: 06/05/2023]
Abstract
During radiotherapy sessions to treat brain tumors or head-and-neck cancers, some patients experience unusual visual and/or olfactory perceptions. This prospective study sought to answer two questions: (i) what proportion of patients experience these unpleasant sensations?, and (ii) which organs are responsible? Eligible patients had brain or near-orbital tumors treated by helical tomotherapy. All were aged 10 years or older, able to communicate, and interviewed by a radiation oncologist at least once weekly during radiation therapy. If they had experienced such sensations, they were encouraged to join the second phase of the study. The patients were asked to indicate, using a button, when a sensation commenced and ended. The recorded data were collated with the treatment log. Thirty-eight consecutive patients were eligible. Twenty-six experienced visual and 13 olfactory sensations. The radiation doses to the organs related to the visual or olfactory sensations did not differ between patients who reported sensations and those who did not. Seventeen patients were enrolled in the second phase of the study. All 14 with visual sensations reported that the sensations occurred when the X-rays passed at eye level. Olfactory sensations were reported by eight out of nine patients when the X-rays passed through the olfactory epithelium and/or ethmoid sinus level. In conclusion, 68% of patients experienced visual sensations caused by X-rays passing through the level of the eyes, and 34% complained of olfactory sensations. With the exception of one patient, olfactory sensations occurred when the X-rays passed through the levels of the olfactory epithelium and/or ethmoid sinus.
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Affiliation(s)
- N Hara
- Department of Radiology, Juntendo University Hospital, Tokyo 113–8431, Japan
| | - A Isobe
- Department of Radiology, Juntendo University Hospital, Tokyo 113–8431, Japan
| | - K Yamada
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Y Kosugi
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - M Oshima
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - T Kawamoto
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - N Shikama
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - K Sasai
- Department of Radiation Oncology, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
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Yamada K, Sasaki M, Murakami H, Aoki K, Morita T, Ishii Y, Tateda K. Evaluation of the simplified carbapenem inactivation method as a phenotypic detection method for carbapenemase-producing Enterobacterales. J Microbiol Methods 2021; 187:106273. [PMID: 34157341 DOI: 10.1016/j.mimet.2021.106273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/18/2021] [Accepted: 06/18/2021] [Indexed: 11/15/2022]
Abstract
Carbapenemase-producing Enterobacterales (CPE) have become a global health concern. Current molecular detection methods require special equipment and reagents. Thus, there is an urgent need for a highly sensitive, specific, and simple method for phenotypic detection of CPE in clinical microbiology laboratories. A simplified carbapenem inactivation method (sCIM) was recently reported. However, its utility for CPE detection has not been sufficiently evaluated to date. We evaluated the sCIM and compared it with the modified CIM (mCIM), using 133 CPE strains (producing IMP, 92; NDM, 11; NDM and OXA-48-like, 1; KPC, 13; OXA-48-like, 12; GES-24, 3; Nmc-A, 1) and 82 non-CPE strains (extended spectrum β-lactamase, 61; AmpC, 21). The sCIM was conducted by loading bacteria onto imipenem and meropenem disks. When imipenem disks with a 1+ bacterial load were used, the sensitivity and specificity of the sCIM were 97.0% and 100%, and those of the mCIM were 97.0% and 96.3%, respectively. The specificity of the sCIM decreased to 57.3% when the bacterial load on imipenem disks was increased to 2+. In contrast, when meropenem disks with a 1+ bacterial load were used, the sCIM had a lower sensitivity (78.2%) and an equivalent specificity (100%). When meropenem disks with a bacterial load of 2+ were used, the sensitivity and specificity of the sCIM increased to 96.2% and 93.9%, respectively. The diameter of the inhibition zone on meropenem disks was larger than that on imipenem disks, and the sCIM was less sensitive when meropenem disks were used. In addition, sCIM detection rates when using meropenem disks were particularly low for OXA-48-like producers (bacterial load 1+, 0/12; bacterial load 2+, 10/12). Our results indicate that the sensitivity and specificity of the sCIM was dependent on the bacterial load and that large bacterial loads led to false positives for AmpC and extended spectrum β-lactamase producers. Thus, the sCIM has high sensitivity and specificity for appropriate bacterial loads when imipenem disks are used.
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Omori Medical Center, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, Japan.
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Center, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Omori Medical Center, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University School of Medicine, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, Japan
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Li N, Ferracane J, Lewis S, Andeen N, Woltjer R, Farsad K, Kaufman J, Rugonyi S, Jahangiri Y, Uchida B, Gabr A, Li J, Yamada K, Al-Hakim R. Abstract No. 225 Venous large animal model for stenosis, thrombosis, and chronic occlusion: short-term results, with biomechanical analysis. J Vasc Interv Radiol 2021. [DOI: 10.1016/j.jvir.2021.03.231] [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: 10/21/2022] Open
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Igawa S, Ono T, Kasajima M, Yamada K, Oguri A, Kameda A, Yamamoto H, Kakegawa M, Hiyoshi Y, Kusuhara S, Ozawa T, Otani S, Fukui T, Mitsufuji H, Masaru K, Yokoba M, Kubota M, Sasaki J, Naoki K. P76.55 Real-world Experience of the Utility in Afatinib Therapy for Patients with EGFR-Mutant Advanced NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1112] [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: 10/21/2022]
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Ono T, Igawa S, Yamada K, Kameda A, Oguri A, Yamamoto H, Manabe H, Ozawa T, Kusuhara S, Kasajima M, Kakegawa M, Otani S, Fukui T, Sasaki J, Naoki K. P76.53 Impact of Neutrophil-to-Lymphocyte Ratio in Patients with EGFR-Mutant NSCLC Treated with Tyrosine Kinase Inhibitors. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1110] [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: 11/24/2022]
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Ishii T, Sasaki M, Yamada K, Kato D, Osuka H, Aoki K, Morita T, Ishii Y, Tateda K. Immunochromatography and chemiluminescent enzyme immunoassay for COVID-19 diagnosis. J Infect Chemother 2021; 27:915-918. [PMID: 33676843 PMCID: PMC7906513 DOI: 10.1016/j.jiac.2021.02.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/09/2021] [Accepted: 02/22/2021] [Indexed: 12/22/2022]
Abstract
Introduction The rapid and accurate detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is required to prevent the spread of COVID-19. This study evaluated the utility of two SARS-CoV-2 antigen detection methods. Methods We evaluated two types of antigen detection methods using immunochromatography (Espline) and quantitative chemiluminescent enzyme immunoassay (Lumipulse). RT-PCR was performed as a standard procedure for COVID-19 diagnosis. Lumipulse and RT-PCR were performed for all 486 nasopharyngeal swabs and 136 saliva samples, and the Espline test was performed for 271 nasopharyngeal swabs and 93 saliva samples. Results The sensitivity and specificity of the Espline test were 10/11 and 260/260 (100%), respectively for the nasopharyngeal swabs and 3/9 and 84/84 (100%), respectively for the saliva samples. High sensitivities for both saliva (8/9) and nasopharyngeal swabs (22/24) were observed in the Lumipulse test. The specificities of the Lumipulse test for nasopharyngeal swabs and saliva samples were 460/462 (99.6%) and 123/127 (96.9%), respectively. Conclusion The Espline test is not effective for saliva samples but is useful for simple and rapid COVID-19 tests using nasopharyngeal swabs because it does not require special devices. The Lumipulse test is a powerful high-throughput tool for COVID-19 diagnosis because it has high detection performance for nasopharyngeal swabs and saliva samples.
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Affiliation(s)
- Toshiaki Ishii
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Kageto Yamada
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan.
| | - Daiki Kato
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Hiroyoshi Osuka
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Toshisuke Morita
- Department of Clinical Laboratory, Toho University Omori Medical Center, 6-11-1, Omori-nishi, Ota-ku, Tokyo, 143-8541, Japan; Department of Laboratory Medicine, Toho University Graduate School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16, Omori-nishi, Ota-ku, Tokyo, 143-8540, Japan
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Amekura H, Toulemonde M, Narumi K, Li R, Chiba A, Hirano Y, Yamada K, Yamamoto S, Ishikawa N, Okubo N, Saitoh Y. Ion tracks in silicon formed by much lower energy deposition than the track formation threshold. Sci Rep 2021; 11:185. [PMID: 33420182 PMCID: PMC7794553 DOI: 10.1038/s41598-020-80360-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 12/15/2020] [Indexed: 11/09/2022] Open
Abstract
Damaged regions of cylindrical shapes called ion tracks, typically in nano-meters wide and tens micro-meters long, are formed along the ion trajectories in many insulators, when high energy ions in the electronic stopping regime are injected. In most cases, the ion tracks were assumed as consequences of dense electronic energy deposition from the high energy ions, except some cases where the synergy effect with the nuclear energy deposition plays an important role. In crystalline Si (c-Si), no tracks have been observed with any monomer ions up to GeV. Tracks are formed in c-Si under 40 MeV fullerene (C60) cluster ion irradiation, which provides much higher energy deposition than monomer ions. The track diameter decreases with decreasing the ion energy until they disappear at an extrapolated value of ~ 17 MeV. However, here we report the track formation of 10 nm in diameter under C60 ion irradiation of 6 MeV, i.e., much lower than the extrapolated threshold. The diameters of 10 nm were comparable to those under 40 MeV C60 irradiation. Furthermore, the tracks formed by 6 MeV C60 irradiation consisted of damaged crystalline, while those formed by 40 MeV C60 irradiation were amorphous. The track formation was observed down to 1 MeV and probably lower with decreasing the track diameters. The track lengths were much shorter than those expected from the drop of Se below the threshold. These track formations at such low energies cannot be explained by the conventional purely electronic energy deposition mechanism, indicating another origin, e.g., the synergy effect between the electronic and nuclear energy depositions, or dual transitions of transient melting and boiling.
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Affiliation(s)
- H Amekura
- National Institute for Materials Science (NIMS), Tsukuba, Japan.
| | | | - K Narumi
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
| | - R Li
- National Institute for Materials Science (NIMS), Tsukuba, Japan.,Shandong University, Jinan, China
| | - A Chiba
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
| | - Y Hirano
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
| | - K Yamada
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
| | - S Yamamoto
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
| | - N Ishikawa
- Japan Atomic Energy Agency, Tokai, Japan
| | - N Okubo
- Japan Atomic Energy Agency, Tokai, Japan
| | - Y Saitoh
- National Institutes for Quantum and Radiological Science and Technology (QST), Takasaki, Japan
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Sasai K, Hara N, Isobe A, Yamada K, Kosugi Y, Oshima M, Kawamoto T, Shikama N. Unusual Visual And Olfactory Perceptions During Radiotherapy Sessions: An Investigation Of The Organs Responsible. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yamamoto T, Yuzuru N, Yamada K, Aoki M, Onishi H, Katsui K, Dekura Y, Nishikawa A, Manabe Y, Kubota S, Yamashita H, Jingu K. PO-0990: Prevention of oncologic pulmonary death by control for pulmonary oligometastases treated with SBRT. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01007-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ito K, Nakagawa M, Hori K, Tashima L, Goto M, Yanagida S, Suzuki J, Kaya R, Kawabata A, Park J, Nasu H, Nishio S, Kondo E, Kaneda M, Tsubamoto H, Arakawa A, Nagasawa T, Yamada K. 834P A phase II study of gemcitabine, cisplatin, and bevacizumab for first recurrent and refractory ovarian clear-cell carcinoma (KCOG-G1601 trial). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Yamada K, Aoki K, Nagasawa T, Imai W, Sasaki M, Murakami H, Morita T, Ishii Y, Tateda K. Carbapenem inactivation method using bacterial lysate and MOPS (LCIM): a very sensitive method for detecting carbapenemase-producing Acinetobacter species. J Antimicrob Chemother 2020; 75:2812-2816. [DOI: 10.1093/jac/dkaa238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/17/2020] [Accepted: 05/05/2020] [Indexed: 11/12/2022] Open
Abstract
Abstract
Objectives
Detection of carbapenem-hydrolysing class D β-lactamase (CHDL)-producing Acinetobacter spp. is critical for understanding antibiotic resistance. In this study, we compared the available detection techniques derived from the carbapenem inactivation method (CIM), using CHDL-producing Acinetobacter spp., and developed a modified method that uses bacterial lysate (lysate CIM; LCIM).
Methods
A total of 159 Acinetobacter spp. (102 carbapenemase producers and 57 non-producers) and 14 Pseudomonas spp. (7 carbapenemase producers and 7 non-producers) were tested. Modified CIM, simplified CIM, CIMTris, Triton-CIM and LCIM were compared using these strains. Distinct from the CIM, LCIM includes a longer incubation period (4 h) with 2.0% Triton X-100 (v/v) in 20 mM MOPS buffer instead of water.
Results
The sensitivity/specificity of the modified CIM, simplified CIM, CIMTris, Triton-CIM and LCIM were 71.6%/100%, 66.1%/89.1%, 88.1%/95.3%, 80.7%/100% and 97.2%/100%, respectively. LCIM was the most sensitive and specific.
Conclusions
Use of bacterial lysate and MOPS increased the sensitivity of the CIM in detecting CHDL-producing Acinetobacter spp.
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Tatsuya Nagasawa
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Waka Imai
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University Graduate School of Medicine, 5-21-6 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
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Yamada S, Yamada K. 1215 Improving Sleep Disorders And Chronic Neck Pain By Adjusting Height Of The Pillow Through Cervical Posture Management. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1209] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
Recent studies have suggested that chronic musculoskeletal system pain, including chronic neck pain, accounts for approximately 70% of all sleeping disorders. Simultaneously, sleeping disorders increase pain sensitivity and create a vicious cycle of chronic neck pain. Patients with chronic pain experience a variety of somatic symptoms (e.g., Stomach or bowel problems, Back pain, Pain in your joints, headaches, chest pain, shortness of breath, dizziness, fatigue, and Trouble sleeping) that are difficult to treat. However, treatment of both neck chronic pain and sleeping disorders through cervical posture management by adjusting height of the pillow used while sleeping has yet to be considered.
Methods
Patients who visited our hospital with chief complaints of chronic neck pain were rated according to the Numerical Rating Scale (NRS) and were asked to answer the Somatic Symptom Scale-8 (SSS-8), to ascertain the degree of somatic symptoms. Out of all the patients, only 84 scored at least 8 out of 32 in the SSS-8. Based on the individual results of the 84 respondents, they were given customized pillows to be used for 3 months. The pillows were adjusted using the SSS method developed at our clinic. We adjusted the height of the pillow by 5mm increments to check the cervical inclination angle at approximately 15 degrees in supine position, lateral position with the center line from face to neck at left-right symmetry and finally confirming smooth turning over. The respondents performed NRS and SSS-8 after 2 weeks and 3 months of using the pillow.
Results
The results of this study showed that at 0 weeks / 2 weeks / 3 months. NRS score was 6.8 / 5.1 / 4.1 (p <0.01), and the overall SSS-8 score was 13.2 / 9.9 / 8.2 (p <0.01), showed a marked improvement. By symptom, all symptoms except Stomach or bowel problems showed significant improvement. Trouble sleeping showed the highest improvement at 2.6 / 1.7 / 1.3 (p <0.01).
Conclusion
Chronic neck pain and sleeping disorders improved in the patients. These results suggested that cervical posture management by adjusting height of the pillow is an effective treatment method.
Support
None
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Affiliation(s)
- S Yamada
- 16 Gou Orthopaedic Clinic, Sagamihara City, JAPAN
| | - K Yamada
- 16 Gou Orthopaedic Clinic, Kanagawa-ken, JAPAN
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Yamada K, Sasaki M, Imai W, Kato M, Maehara C, Yasui K, Fukuzawa S, Murakami H, Kakisu K, Hori Y, Nagasawa T, Aoki K, Yamaguchi T, Ishii Y, Tateda K. Bacterial keratoconjunctivitis caused by Staphylococcus argenteus belonging to sequence type 1223 isolated in Japan. J Infect Chemother 2020; 26:1002-1004. [PMID: 32471795 DOI: 10.1016/j.jiac.2020.04.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 04/20/2020] [Accepted: 04/28/2020] [Indexed: 11/25/2022]
Abstract
Staphylococcus argenteus, characterized by the formation of non-pigmented (white) colonies, was recently identified as a new lineage separated from Staphylococcus aureus. However, correct identification of this lineage is difficult because of the similar characteristics to S. aureus. Here, we describe the first known case of keratoconjunctivitis due to S. argenteus in a 64-year-old man with diabetes. The symptoms of the patient were not improved by antibiotic therapy using levofloxacin eye drops (15 mg/mL). The conjunctival scraping was cultured, and coagulase-positive staphylococci forming white colonies were detected. Matrix-assisted laser desorption/ionization-time of flight mass spectrometry confirmed the species as S. argenteus with a spectral score of 1.97. After the antibiotic was changed to vancomycin eye drops (10 mg/mL), the patient's symptom clearly improved. Multi-locus sequence typing showed that this isolate belonged to sequence type 1223, which has been predominantly isolated worldwide. Furthermore, this isolate harbored various virulence genes associated with S. aureus, such as staphylococcal enterotoxins and leukocidin. Since only limited information is available for this organism, further studies are needed to establish the epidemiology of S. argenteus.
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan.
| | - Masakazu Sasaki
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan; Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Waka Imai
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Misaki Kato
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Chikako Maehara
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Kumiko Yasui
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Shigeru Fukuzawa
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Medical Center Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Koji Kakisu
- Department of Ophthalmology, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Yuichi Hori
- Department of Ophthalmology, School of Medicine, Toho University, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Tatsuya Nagasawa
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Tetsuo Yamaguchi
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
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Isozaki A, Nakagawa Y, Loo MH, Shibata Y, Tanaka N, Setyaningrum DL, Park JW, Shirasaki Y, Mikami H, Huang D, Tsoi H, Riche CT, Ota T, Miwa H, Kanda Y, Ito T, Yamada K, Iwata O, Suzuki K, Ohnuki S, Ohya Y, Kato Y, Hasunuma T, Matsusaka S, Yamagishi M, Yazawa M, Uemura S, Nagasawa K, Watarai H, Di Carlo D, Goda K. Sequentially addressable dielectrophoretic array for high-throughput sorting of large-volume biological compartments. Sci Adv 2020; 6:eaba6712. [PMID: 32524002 PMCID: PMC7259936 DOI: 10.1126/sciadv.aba6712] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/25/2020] [Indexed: 05/27/2023]
Abstract
Droplet microfluidics has become a powerful tool in precision medicine, green biotechnology, and cell therapy for single-cell analysis and selection by virtue of its ability to effectively confine cells. However, there remains a fundamental trade-off between droplet volume and sorting throughput, limiting the advantages of droplet microfluidics to small droplets (<10 pl) that are incompatible with long-term maintenance and growth of most cells. We present a sequentially addressable dielectrophoretic array (SADA) sorter to overcome this problem. The SADA sorter uses an on-chip array of electrodes activated and deactivated in a sequence synchronized to the speed and position of a passing target droplet to deliver an accumulated dielectrophoretic force and gently pull it in the direction of sorting in a high-speed flow. We use it to demonstrate large-droplet sorting with ~20-fold higher throughputs than conventional techniques and apply it to long-term single-cell analysis of Saccharomyces cerevisiae based on their growth rate.
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Affiliation(s)
- A. Isozaki
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Kanagawa Institute of Industrial Science and Technology, 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa 213-0012, Japan
| | - Y. Nakagawa
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - M. H. Loo
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Shibata
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - N. Tanaka
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - D. L. Setyaningrum
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - J.-W. Park
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Shirasaki
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Faculty of Science Building 1 (East), Room 575, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H. Mikami
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - D. Huang
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H. Tsoi
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - C. T. Riche
- Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, 420 Westwood Plaza, 5121E Engineering V, Los Angeles, CA 90095, USA
| | - T. Ota
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H. Miwa
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y. Kanda
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - T. Ito
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012, Japan
| | - K. Yamada
- R&D Department, euglena Co., Ltd., 75-1, Ono-machi, Tsurumi-ku, Yokohama-shi 230-0046, Japan
| | - O. Iwata
- R&D Department, euglena Co., Ltd., 75-1, Ono-machi, Tsurumi-ku, Yokohama-shi 230-0046, Japan
| | - K. Suzuki
- R&D Department, euglena Co., Ltd., 75-1, Ono-machi, Tsurumi-ku, Yokohama-shi 230-0046, Japan
| | - S. Ohnuki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Y. Ohya
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
- AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8589, Japan
| | - Y. Kato
- Graduate School of Science, Technology Innovation, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - T. Hasunuma
- Graduate School of Science, Technology Innovation, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
- Engineering Biology Research Center, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - S. Matsusaka
- Clinical Research and Regional Innovation, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - M. Yamagishi
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Faculty of Science Building 1 (East), Room 575, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - M. Yazawa
- Department of Rehabilitation and Regenerative Medicine, Pharmacology, Columbia University, 650 West 168th Street, BB1108, New York, NY 10032, USA
| | - S. Uemura
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Faculty of Science Building 1 (East), Room 575, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K. Nagasawa
- Division of Stem Cell Cellomics, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - H. Watarai
- Division of Stem Cell Cellomics, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
- Department of Immunology and Stem Cell Biology, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa 920-8640, Japan
| | - D. Di Carlo
- Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, 420 Westwood Plaza, 5121E Engineering V, Los Angeles, CA 90095, USA
| | - K. Goda
- Department of Chemistry, Graduate School of Science, University of Tokyo, East Chemistry Building, Room 213, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Bioengineering, Samueli School of Engineering, University of California, Los Angeles, 420 Westwood Plaza, 5121E Engineering V, Los Angeles, CA 90095, USA
- Japan Science and Technology Agency, 4-1-8, Honcho, Kawaguchi-shi, Saitama 332-0012, Japan
- Institute of Technological Sciences, Wuhan University, Hubei 430072, China
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Ichikawa N, Homma S, Funakoshi T, Ohshima T, Hirose K, Yamada K, Nakamoto H, Kazui K, Yokota R, Honma T, Maeda Y, Yoshida T, Ishikawa T, Iijima H, Aiyama T, Taketomi A. Impact of technically qualified surgeons on laparoscopic colorectal resection outcomes: results of a propensity score-matching analysis. BJS Open 2020; 4:486-498. [PMID: 32207580 PMCID: PMC7260420 DOI: 10.1002/bjs5.50263] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/21/2019] [Indexed: 02/06/2023] Open
Abstract
Background The Endoscopic Surgical Skill Qualification System (ESSQS) was introduced in Japan to improve the quality of laparoscopic surgery. This cohort study investigated the short‐ and long‐term postoperative outcomes of colorectal cancer laparoscopic procedures performed by or with qualified surgeons compared with outcomes for unqualified surgeons. Methods All laparoscopic colorectal resections performed from 2010 to 2013 in 11 Japanese hospitals were reviewed retrospectively. The procedures were categorized as performed by surgeons with or without the ESSQS qualification and patients' clinical, pathological and surgical features were used to match subgroups using propensity scoring. Outcome measures included postoperative and long‐term results. Results Overall, 1428 procedures were analysed; 586 procedures were performed with ESSQS‐qualified surgeons and 842 were done by ESSQS‐unqualified surgeons. Upon matching, two cohorts of 426 patients were selected for comparison of short‐term results. A prevalence of rectal resection (50·3 versus 40·5 per cent; P < 0·001) and shorter duration of surgery (230 versus 238 min; P = 0·045) was reported for the ESSQS group. Intraoperative and postoperative complication and reoperation rates were significantly lower in the ESSQS group than in the non‐ESSQS group (1·2 versus 3·6 per cent, P = 0·014; 4·6 versus 7·5 per cent, P = 0·025; 1·9 versus 3·9 per cent, P = 0·023, respectively). These findings were confirmed after propensity score matching. Cox regression analysis found that non‐attendance of ESSQS‐qualified surgeons (hazard ratio 12·30, 95 per cent c.i. 1·28 to 119·10; P = 0·038) was independently associated with local recurrence in patients with stage II disease. Conclusion Laparoscopic colorectal procedures performed with ESSQS‐qualified surgeons showed improved postoperative results. Further studies are needed to investigate the impact of the qualification on long‐term oncological outcomes.
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Affiliation(s)
- N Ichikawa
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo
| | - S Homma
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo
| | - T Funakoshi
- Department of Surgery, Sapporo-Kosei General Hospital, Sapporo
| | - T Ohshima
- Department of Surgery, Sapporo City General Hospital, Sapporo
| | - K Hirose
- Department of Surgery, Tomakomai City Hospital, Tomakomai
| | - K Yamada
- Department of Surgery, Asahikawa-Kosei General Hospital, Asahikawa
| | - H Nakamoto
- Department of Surgery, KKR Sapporo Medical Centre, Sapporo
| | - K Kazui
- Department of Surgery, Hokkaido Hospital, Japan Community Healthcare Organization, Sapporo
| | - R Yokota
- Department of Surgery, Sunagawa City Medical Centre, Sunagawa
| | - T Honma
- Department of Surgery, Obihiro Kyokai Hospital, Obihiro
| | - Y Maeda
- Department of Gastroenterological Surgery, Hokkaido Cancer Centre, Sapporo
| | - T Yoshida
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo
| | - T Ishikawa
- Department of Surgery, Kushiro Rosai Hospital, Japan Labour Health and Welfare Organization, Kushiro
| | - H Iijima
- Clinical Research and Medical Innovation Centre, Hokkaido University Hospital, Sapporo
| | - T Aiyama
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo
| | - A Taketomi
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo
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Gabr A, Jahangiri Y, Yamada K, Uchida B, Li J, Edwards J, Farsad K. Abstract No. 685 Direct versus total serum bilirubin: which is the better predictor of survival in patients undergoing transarterial therapies for hepatocellular carcinoma? J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.744] [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] Open
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43
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Kashiwagi H, Yamada K. Investigation of the time interval of plasma generation for a high repetition rate laser ion source. Rev Sci Instrum 2020; 91:033305. [PMID: 32259964 DOI: 10.1063/1.5130999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/11/2020] [Indexed: 06/11/2023]
Abstract
To apply a laser ion source that generates a high-intensity pulsed beam to high-dose applications, such as ion implantation, a high repetition rate operation with a short pulse interval is required. However, when the pulse interval is shortened, there is a concern that a plasma, which is different from a single pulse plasma generation, may be formed due to the interaction between the preceding and following pulses. We investigated the time interval in which plasma pulses are generated without pulse-to-pulse interaction using a laser ion source with two lasers. In the experiment, a graphite target was irradiated by two laser beams (1064-nm wavelengths) with the same pulse widths (5.4 ns) and energies (15 mJ, 30 mJ, and 45 mJ) at different time intervals ranging from 1000 μs to 0 µs, and the time integrated value corresponding to the total charge amount was calculated from the measured time-of-flight signal of the generated carbon ion current. It was observed that the total charge did not change when the time interval was as low as approximately 100 µs, and the total charge rapidly decreased when the time interval was below approximately 100 µs. Thus, it was determined that the interaction occurs within a time interval of approximately 100 µs.
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Affiliation(s)
- H Kashiwagi
- Department of Advanced Radiation Technology, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-machi, Takasaki, Gunma, Japan
| | - K Yamada
- Department of Advanced Radiation Technology, Takasaki Advanced Radiation Research Institute, Quantum Beam Science Research Directorate, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-machi, Takasaki, Gunma, Japan
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44
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Bochnakova T, Som A, Kashefi A, Arellano R, Ganguli S, Yamada K, Uppot R. Abstract No. 701 Assessment of the thermal properties of absorbable gelatin powder for potential use as a tissue separator during microwave ablation procedures. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.760] [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: 10/25/2022] Open
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45
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Yamada K, Kumagai K, Jahangiri Y, Li J, Gabr A, Anoushiravani A, Uchida B, Farsad K, Horikawa M. Abstract No. 438 Tail artery access for transarterial experiments in rats: feasibility study in a survival model. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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46
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Yamada K, Farsad K, Jahangiri Y, Li J, Gabr A, Anoushiravani A, Uchida B, Horikawa M. Abstract No. 434 Embolic characteristics of imipenem–cilastatin particles in vivo in the rat renal artery. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.495] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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47
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Zoshima T, Hara S, Mizushima I, Nishioka R, Ito K, Fujii H, Yamada K, Nomura H, Kawano M. Wire-loop lesion is associated with serological immune abnormality, but not renal prognosis, in lupus nephritis. Lupus 2020; 29:407-412. [PMID: 32041502 DOI: 10.1177/0961203320905652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Wire-loop lesion (WL) is one of the active lesions of lupus nephritis (LN). However, few reports have focused on the clinicopathological relationships of WL to serological immune abnormality and renal prognosis. METHODS We enrolled 126 Japanese LN patients subjected to renal biopsy in 11 hospitals from 2000 to 2018. In patients with class III or IV of the International Society of Nephrology/Renal Pathology Society classification, we retrospectively compared clinicopathological findings between those with WL (WL+ group) and without WL (WL- group) to detect factors associated with WL. Chronic kidney disease (CKD) was defined as an estimated glomerular filtration rate of <60 mL/min/1.73m2 for more than three months. We also compared these findings between those with CKD (CKD+ group) and without CKD (CKD- group) at the last visit to investigate factors associated with renal prognosis. RESULTS Of 126 patients, 100 (79.4%) were classified as class III or IV. WL was found in 36 (36.0%) of them. Although the renal function did not differ, the WL+ group had a higher titre of serum anti-dsDNA antibodies and lower serum complement 3 levels than the WL- group. Linear regression analysis revealed a significant association only between anti-dsDNA antibodies and WL (β = 0.27, 95% confidence interval (CI) 0.001-0.100, p = 0.01). Of these patients, 69 were tracked for 59.6 ± 55.1 months. Kaplan-Meier analysis showed no difference in renal prognosis between these groups. Next, the CKD+ group included 15 (22.1%) patients. They were older and had higher frequencies of hypertension and hyperuricaemia, serum creatinine (Cr) level, glomerulosclerosis, interstitial inflammation, interstitial fibrosis and tubular atrophy than the CKD- group at the time of renal biopsy. The frequency of WL was not significantly different. Cox regression analysis revealed significant associations of CKD with hypertension, hyperuricaemia, serum Cr level at the time of renal biopsy clinically and with tubular atrophy histologically. CONCLUSIONS WL was associated with serum anti-dsDNA antibodies but not with renal prognosis, suggesting that WL reflects immune abnormality but is not an independent factor predictive of renal prognosis in LN.
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Affiliation(s)
- T Zoshima
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - S Hara
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - I Mizushima
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - R Nishioka
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - K Ito
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - H Fujii
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - K Yamada
- Department of Hematology and Immunology, Kanazawa Medical University, Kanazawa, Japan
| | - H Nomura
- Department of General Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - M Kawano
- Department of Rheumatology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
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Nagayama Y, Tanoue S, Oda S, Sakabe D, Emoto T, Kidoh M, Uetani H, Sasao A, Nakaura T, Ikeda O, Yamada K, Yamashita Y. Metal Artifact Reduction in Head CT Performed for Patients with Deep Brain Stimulation Devices: Effectiveness of a Single-Energy Metal Artifact Reduction Algorithm. AJNR Am J Neuroradiol 2020; 41:231-237. [PMID: 31879332 DOI: 10.3174/ajnr.a6375] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 11/15/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Deep brain stimulation electrodes induce massive artifacts on CT images, deteriorating the diagnostic value of examinations. We aimed to investigate the usefulness and potential limitations of a single-energy metal artifact reduction algorithm in head CT performed in patients with implanted deep brain stimulation devices. MATERIALS AND METHODS Thirty-four patients with deep brain stimulation (bilateral, n = 28) who underwent head CT on a 320-detector row scanner and whose images were reconstructed with and without single-energy metal artifact reduction at the examinations were retrospectively included. The severity of artifacts around electrodes was assessed objectively using SDs and an artifact index. Two radiologists subjectively evaluated the severity of artifacts from electrodes, the visibility of electrode localization and surrounding structures, and overall diagnostic confidence on 4-point scales. Background image quality (GM-WM contrast and image noise) was subjectively and objectively assessed. The presence and location of artifacts newly produced by single-energy metal artifact reduction were analyzed. RESULTS Single-energy metal artifact reduction provided lower objective and subjective metal artifacts and improved visualization of electrode localization and surrounding structures and diagnostic confidence compared with non-single-energy metal artifact reduction images, with statistical significance (all, P < .01). No significant differences were observed in GM-WM contrast and image noise (all, P ≥ .11). The new artifacts from single-energy metal artifact reduction were prominently observed in patients with bilateral deep brain stimulation at high convexity, possibly induced by deep brain stimulation leads placed under the parietal scalp. CONCLUSIONS Single-energy metal artifact reduction substantially reduces the metal artifacts from deep brain stimulation electrodes and improves the visibility of intracranial structures without affecting background image quality. However, non-single-energy metal artifact reduction images should be simultaneously reviewed to accurately assess the entire intracranial area, particularly in patients with bilateral deep brain stimulation.
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Affiliation(s)
- Y Nagayama
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - S Tanoue
- Diagnostic Radiology (S.T.), Graduate School of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - S Oda
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - D Sakabe
- Department of Central Radiology (D.S., T.E.), Kumamoto University Hospital, Kumamoto, Japan
| | - T Emoto
- Department of Central Radiology (D.S., T.E.), Kumamoto University Hospital, Kumamoto, Japan
| | - M Kidoh
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - H Uetani
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - A Sasao
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - T Nakaura
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - O Ikeda
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
| | - K Yamada
- Graduate School of Medical Sciences, and Departments of Neurosurgery (K.Y.)
| | - Y Yamashita
- From the Department of Diagnostic Radiology (Y.N., S.O., M.K., H.U., A.S., T.N., O.I., Y.Y.)
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49
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Yamada K, Kashiwagi H. Low-charge-state ion production by a laser ion source for the TIARA ion implanter. Rev Sci Instrum 2020; 91:013305. [PMID: 32012598 DOI: 10.1063/1.5128570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
Ion implanters require various kinds of heavy-ion beams in low-charge states for material science experiments. For this purpose, a laser ion source has been developed for the ion implanter at Takasaki Ion Accelerators for Advanced Radiation Application. In this study, we investigated the particle number of ions per laser pulse for each charge state in the laser-produced carbon plasma. In the experiment, the carbon plasma was generated from a graphite target using a Nd:YAG laser (1064 nm wavelength, 5 ns pulse width) at a laser energy of 37.5 mJ, 28.3 mJ, or 15.6 mJ. The particle number of ions in the plasma was evaluated from the time-integrated value of each ion-charge-state's current signal by placing the focusing lens at various positions. We found that the particle number of carbon ions was the highest for singly charged ions at all laser energies, with particle number in the order of 1010 ions obtained at a 1-m distance from the target surface.
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Affiliation(s)
- K Yamada
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - H Kashiwagi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
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Yamada K, Sasaki M, Imai W, Murakami H, Morita T, Aoki K, Ishii Y, Tateda K. Evaluation of inhibitor-combination mCIM for detecting MBL-producing Enterobacterales using three MBL inhibitors. J Med Microbiol 2019; 68:1604-1606. [PMID: 31513006 DOI: 10.1099/jmm.0.001073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The increase in carbapenemase-producing Enterobacterales (CPE), including metallo-β-lactamase (MBL) producers, is a severe global health concern. Thus, highly sensitive and specific methods for detecting MBL producers are needed. In this study, we tested the detectability of MBL-producing Enterobacterales against three types of MBL inhibitors (sodium mercaptoacetate, SMA; ethylenediaminetetraacetic acid, EDTA; and dipicolinic acid, DPA) used in combination with a modified carbapenem inactivation method (mCIM). These inhibitor-combination mCIMs were tested against 129 CPE (IMP, 93; NDM, 11; KPC, 13; NMC, 1; OXA-48, 11) and 75 non-CPE. For evaluation of MBL inhibitors, we used two concentrations for each of the three inhibitors: DPA (200 and 300 mg l- 1), EDTA (5 and 10 mM), and SMA (1500 and 3000 mg l- 1). The overall sensitivities of SMA, EDTA and DPA were 97.1-99.0 %, 81.7-99.0 % and 88.5-96.2 %, respectively. Moreover, each method showed high specificity (99.0-100 %). Although inhibitor-combination mCIMs were highly sensitive and specific for the detection of MBL producers, we found that sensitivity was dependent on the concentration of inhibitors.
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Affiliation(s)
- Kageto Yamada
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan.,Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Masakazu Sasaki
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan.,Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Waka Imai
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Hinako Murakami
- Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Toshisuke Morita
- Department of Laboratory Medicine, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan.,Department of Clinical Laboratory, Toho University Medical Centre Omori Hospital, 6-11-1 Omori-nishi, Ota-ku, Tokyo 143-8541, Japan
| | - Kotaro Aoki
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University Graduate School of Medicine, 5-21-16 Omori-nishi, Ota-ku, Tokyo 143-8540, Japan
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