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Maruki T, Yamamoto K, Yamato M, Sahara T, Shirano M, Sakamoto N, Hase R, Shinohara K, Yoshimura Y, Imakita N, Kodama F, Yamamoto Y, Yokota K, Yoshimi Y, Hasegawa C, Kutsuna S, Ohmagari N. Epidemiological trends of traveler's diarrhea in Japan: An analysis of imported infectious disease registry data from 2017-2022. Glob Health Med 2023; 5:372-376. [PMID: 38162433 PMCID: PMC10730917 DOI: 10.35772/ghm.2023.01079] [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: 07/18/2023] [Revised: 09/27/2023] [Accepted: 10/31/2023] [Indexed: 01/03/2024]
Abstract
Traveler's diarrhea (TD) is a global problem, and identifying the causative organisms of TD is important for adequate treatment. Therefore, this study retrospectively analyzed TD cases in patients who returned to Japan after traveling abroad to determine the causative organisms by travel region. We included patients with a final diagnosis of TD registered in the Japan Registry for Infectious Diseases from Abroad database from September 25, 2017, to September 1, 2022, from 14 medical institutions. A total of 919 patients were analyzed; the causative TD pathogen was identified in 188 cases (20%), of which 154 were caused by diarrheagenic bacteria, the most common being Campylobacter spp. (64%). A 2.2 mg/dL C-reactive protein concentration cutoff value had some predictive ability for bacterial TD (negative predictive value, 89%). Therefore, the C-reactive protein level may help rule out bacterial diarrhea and prevent unnecessary antimicrobial administration when patients cannot provide a stool specimen.
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Affiliation(s)
- Taketomo Maruki
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kei Yamamoto
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | | | | | | | | | - Ryota Hase
- Japanese Red Cross Narita Hospital, Chiba, Japan
| | - Koh Shinohara
- Kyoto City Hospital, Kyoto, Japan
- Department of Clinical Laboratory Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | | | | | | | | | - Kyoko Yokota
- Kagawa Prefectural Central Hospital, Kagawa, Japan
| | | | | | - Satoshi Kutsuna
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
- Graduate School of Medicine Faculty of Medicine, Osaka University, Osaka, Japan
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
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Watanabe T, Hara Y, Yoshimi Y, Yokoyama-Kokuryo W, Fujita Y, Yokoe M, Noguchi Y. Application of MALDI-TOF MS to assess clinical characteristics, risk factors, and outcomes associated with anaerobic bloodstream infection: a retrospective observational study. Ann Clin Microbiol Antimicrob 2021; 20:42. [PMID: 34107966 PMCID: PMC8191184 DOI: 10.1186/s12941-021-00449-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/02/2021] [Indexed: 11/28/2022] Open
Abstract
Background Correctly identifying anaerobic bloodstream infections (BSIs) is difficult. However, a new technique, matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS), enables more accurate identification and appropriate treatment. Anaerobic BSIs identified by MALDI-TOF MS were retrospectively analyzed to determine the clinical and microbiological features and patient outcomes based on the anaerobic genera or group. Methods Medical records of patients with anaerobic BSIs were used to conduct a single-center retrospective cohort study from January 2016 to December 2020 in Nagoya, Japan. Multivariate logistic regression analysis was performed to determine the independent risk factors for in-hospital mortality. Results Of the 215 patients with anaerobic BSIs, 31 had multiple anaerobic organisms in the blood culture, including 264 total episodes of anaerobic BSIs. Bacteroides spp. were isolated the most (n = 74), followed by gram-positive non-spore-forming bacilli (n = 57), Clostridium spp. (n = 52), gram-positive anaerobic cocci (GPAC) (n = 27), and gram-negative cocci (n = 7). The median patient age was 76 years; 56.7% were male. The most common focal infection site was intra-abdominal (36.7%). The in-hospital mortality caused by anaerobic BSIs was 21.3%, and was highest with Clostridium spp. (36.5%) and lowest with GPAC (3.7%). Age, solid tumors, and Clostridium spp. were independent risk factors for in-hospital mortality. Conclusions We identified current anaerobic BSI trends using MALDI-TOF MS and reported that mortality in patients with anaerobic BSIs patients was highest with Clostridium spp. infections.
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Affiliation(s)
- Tsuyoshi Watanabe
- Division of Rheumatology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan.
| | - Yuki Hara
- Division of Clinical Laboratory, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Yusuke Yoshimi
- Division of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Waka Yokoyama-Kokuryo
- Division of Rheumatology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan
| | - Yoshiro Fujita
- Division of Rheumatology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan.,Division of Nephrology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan
| | - Masamichi Yokoe
- Division of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Yoshinori Noguchi
- Division of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
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Kutsuna S, Asai Y, Yamamoto K, Shirano M, Konishi K, Asaoka T, Yamato M, Katsuragi Y, Yamamoto Y, Sahara T, Tamiya A, Nakamura-Uchiyama F, Sakamoto N, Kosaka A, Washino T, Hase R, Mito H, Kurita T, Shinohara K, Shimizu T, Kodama F, Nagasaka A, Ogawa T, Kasahara K, Yoshimura Y, Tachikawa N, Yokota K, Yuka Murai NS, Sakamaki I, Hasegawa C, Yoshimi Y, Toyoda K, Mitsuhashi T, Ohmagari N. Epidemiological trends of imported infectious diseases in Japan: Analysis of imported 2-year infectious disease registry data. J Infect Chemother 2020; 27:632-638. [PMID: 33309629 DOI: 10.1016/j.jiac.2020.11.028] [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: 07/30/2020] [Revised: 10/30/2020] [Accepted: 11/30/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The epidemiology of infectious diseases in Japan remains undefined despite the increasing tourism. GeoSentinel, an epidemiological surveillance system for reporting imported infectious diseases, has only two participating facilities in Japan. Although the number of infectious diseases is reported by the National Institute of Infectious Diseases, there is no detailed clinical information about these cases. Therefore, we established J-RIDA (Japan Registry for Infectious Diseases from Abroad) to clarify the status of imported infectious diseases in Japan and provide detailed information. METHODS J-RIDA was started as a registry of imported infectious diseases. Case registration began in October 2017. Between October 2017 and September 2019, 15 medical institutions participated in this clinical study. The registry collected information about the patient's age, sex, nationality, chief complaint, consultation date, date of onset, whether visit was made to a travel clinic before travel, blood test results (if samples were collected), travel history, and final diagnosis. RESULTS Of the 3046 cases included in this study, 46.7% to Southeast Asia, 13.0% to Africa, 13.7% to East Asia, 11.5% to South Asia, 7.5% to Europe, 3.8% to Central and South America, 4.6% to North America, 3.9% to Oceania, and 2.8% to Central and west Asia. More than 85% of chief complaints were fever and general symptoms, gastrointestinal symptoms, respiratory symptoms, or dermatologic problems. The most common diseases were travelers' diarrhea, animal bite, upper respiratory infection, influenza, and dengue fever. CONCLUSIONS We summarized two-year cases registered in Japan's imported infectious disease registry. These results will significantly contribute to the epidemiology in Japan.
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Affiliation(s)
- Satoshi Kutsuna
- Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan.
| | - Yusuke Asai
- Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - Kei Yamamoto
- Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - Michinori Shirano
- Osaka City General Hospital, 2-13-22, Miyakojima-hondori Miyakojima-ku, Osaka, 534-0021, Japan
| | - Keiji Konishi
- Osaka City General Hospital, 2-13-22, Miyakojima-hondori Miyakojima-ku, Osaka, 534-0021, Japan
| | - Tomohiro Asaoka
- Osaka City General Hospital, 2-13-22, Miyakojima-hondori Miyakojima-ku, Osaka, 534-0021, Japan
| | - Masaya Yamato
- Rinku General Medical Center, Rinku Ourai Kita 2-23, Izumisanoshi, Osaka, 598-8577, Japan
| | - Yukiko Katsuragi
- Rinku General Medical Center, Rinku Ourai Kita 2-23, Izumisanoshi, Osaka, 598-8577, Japan
| | - Yudai Yamamoto
- Rinku General Medical Center, Rinku Ourai Kita 2-23, Izumisanoshi, Osaka, 598-8577, Japan
| | - Toshinori Sahara
- Tokyo Metropolitan Health and Hospitals Corporation Ebara Hospital, 3F 2-5 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Aya Tamiya
- Tokyo Metropolitan Health and Hospitals Corporation Ebara Hospital, 3F 2-5 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Fukumi Nakamura-Uchiyama
- Tokyo Metropolitan Health and Hospitals Corporation Ebara Hospital, 3F 2-5 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Naoya Sakamoto
- Tokyo Metropolitan Bokutoh Hospital, 4-23-15 Kotobashi, Sumida-ku, Tokyo, 130-8575, Japan
| | - Atsushi Kosaka
- Tokyo Metropolitan Bokutoh Hospital, 4-23-15 Kotobashi, Sumida-ku, Tokyo, 130-8575, Japan
| | - Takuya Washino
- Tokyo Metropolitan Bokutoh Hospital, 4-23-15 Kotobashi, Sumida-ku, Tokyo, 130-8575, Japan
| | - Ryota Hase
- Japanese Red Cross Narita Hospital, 90-1, Iida-cho, Narita-shi, Chiba, 286-8523, Japan
| | - Haruki Mito
- Japanese Red Cross Narita Hospital, 90-1, Iida-cho, Narita-shi, Chiba, 286-8523, Japan
| | - Takashi Kurita
- Japanese Red Cross Narita Hospital, 90-1, Iida-cho, Narita-shi, Chiba, 286-8523, Japan
| | - Koh Shinohara
- Kyoto City Hospital, 1-2 Mibuhigashitakadacho, Nakagyo Ward, Kyoto, 604-8845, Japan
| | - Tsunehiro Shimizu
- Kyoto City Hospital, 1-2 Mibuhigashitakadacho, Nakagyo Ward, Kyoto, 604-8845, Japan
| | - Fumihiro Kodama
- Sapporo City General Hospital, Kita 1 Nishi 2, Chuo-ku, Sapporo, 060-8611, Japan
| | - Atsushi Nagasaka
- Sapporo City General Hospital, Kita 1 Nishi 2, Chuo-ku, Sapporo, 060-8611, Japan
| | - Taku Ogawa
- Nara Medical University Hospital, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan
| | - Kei Kasahara
- Nara Medical University Hospital, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan
| | - Yukihiro Yoshimura
- Yokohama Municipal Citizen's Hospital, 1-1, Mitsuzawanishimachi, Kanagawa-ku, Yokohama City, Kanagawa, 221-0855, Japan
| | - Natsuo Tachikawa
- Yokohama Municipal Citizen's Hospital, 1-1, Mitsuzawanishimachi, Kanagawa-ku, Yokohama City, Kanagawa, 221-0855, Japan
| | - Kyoko Yokota
- Kagawa Prefectural Central Hospital, 1-2-1, Asahicho, Takamatsu, Kagawa, 760-0065, Japan
| | - N S Yuka Murai
- Kagawa Prefectural Central Hospital, 1-2-1, Asahicho, Takamatsu, Kagawa, 760-0065, Japan
| | - Ippei Sakamaki
- Toyama University Hospital, 2630 Sugitani, Toyama-shi, Toyama, 930-0194, Japan
| | - Chihiro Hasegawa
- Nagoya City East Medical Center, 1-2-23 Wakamizu, Chikusa-ku, Nagoya-city, Aichi, 464-8547, Japan
| | - Yusuke Yoshimi
- Japanese Red Cross Nagoya Daini Hospital, 9, Myokencho, Nagoya, Aichi, 466-8650, Japan
| | - Kazuhiro Toyoda
- Kyushu University Hospital, 3-1-1, Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Tatsuro Mitsuhashi
- Aomori Prefectural Central Hospital, Higashi Tukurimiti 2-1-1, Aomori, 030-8553, Japan
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
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Watanabe T, Hara Y, Yoshimi Y, Fujita Y, Yokoe M, Noguchi Y. Clinical characteristics of bloodstream infection by Parvimonas micra: retrospective case series and literature review. BMC Infect Dis 2020; 20:578. [PMID: 32758181 PMCID: PMC7405351 DOI: 10.1186/s12879-020-05305-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Background Gram-positive anaerobic (GPA) bacteria inhabit different parts of the human body as commensals but can also cause bacteremia. In this retrospective observational study, we analyzed GPA bacteremia pathogens before (2013–2015) and after (2016–2018) the introduction of the matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI-TOF MS). Method We conducted a retrospective observational study by searching the microbiology database to identify all positive GPA blood cultures of patients with GPA bacteremia diagnosed using the new technique, MALDI-TOF MS, between January 1, 2016 and December 31, 2018; and using a conventional phenotypic method between January 1, 2013 and December 31, 2015 at a single tertiary center in Japan. Parvimonas micra (P. micra) (17.5%) was the second most frequently identified GPA (MALDI-TOF MS); we then retrospectively reviewed electronic medical records for 25 P. micra bacteremia cases at our hospital. We also conducted a literature review of published cases in PubMed from January 1, 1980, until December 31, 2019; 27 cases were retrieved. Results Most cases of P. micra bacteremia were identified after 2015, both, at our institute and from the literature review. They were of mostly elderly patients and had comorbid conditions (malignancies and diabetes). In our cases, laryngeal pharynx (7/25, 28%) and gastrointestinal tract (GIT; 6/25, 24%) were identified as the most likely sources of bacteremia; however, the infection source was not identified in 9 cases (36%). P. micra bacteremia were frequently associated with spondylodiscitis (29.6%), oropharyngeal infection (25.9%), intra-abdominal abscess (14.8%), infective endocarditis (11.1%), septic pulmonary emboli (11.1%), and GIT infection (11.1%) in the literature review. Almost all cases were treated successfully with antibiotics and by abscess drainage. The 30-day mortalities were 4 and 3.7% for our cases and the literature cases, respectively. Conclusions Infection sites of P. micra are predominantly associated with GIT, oropharyngeal, vertebral spine, intra-abdominal region, pulmonary, and heart valves. Patients with P. micra bacteremia could have good prognosis following appropriate treatment.
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Affiliation(s)
- Tsuyoshi Watanabe
- Department of Rheumatology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan.
| | - Yuki Hara
- Department of Clinical Laboratory, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Yusuke Yoshimi
- Department of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Yoshiro Fujita
- Department of Rheumatology, Chubu Rosai Hospital, 2-10-15, Komei-cho, Minato-ku, Nagoya, Aichi, 455-8530, Japan
| | - Masamichi Yokoe
- Department of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
| | - Yoshinori Noguchi
- Department of General Internal Medicine, Japanese Red Cross Nagoya Daini Hospital, Nagoya, Aichi, 466-8650, Japan
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Iwata Y, Tanaka Y, Kubosaki S, Morita T, Yoshimi Y. A strategy for generating aryl radicals from arylborates through organic photoredox catalysis: photo-Meerwein type arylation of electron-deficient alkenes. Chem Commun (Camb) 2018; 54:1257-1260. [DOI: 10.1039/c7cc09140k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Generation of a variety of aryl radicals from arylboronic acids through metal-free photoredox catalysis under mild conditions.
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Affiliation(s)
- Y. Iwata
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Y. Tanaka
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - S. Kubosaki
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - T. Morita
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
| | - Y. Yoshimi
- Department of Applied Chemistry and Biotechnology
- Graduate School of Engineering
- University of Fukui
- Fukui 910-8507
- Japan
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Kunimatsu R, Yoshimi Y, Hirose N, Awada T, Miyauchi M, Takata T, Li W, Zhu L, Denbesten P, Tanimoto K. The C-terminus of amelogenin enhances osteogenic differentiation of human cementoblast lineage cells. J Periodontal Res 2016; 52:218-224. [DOI: 10.1111/jre.12384] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2016] [Indexed: 12/28/2022]
Affiliation(s)
- R. Kunimatsu
- Department of Orthodontics; Applied Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - Y. Yoshimi
- Department of Orthodontics; Applied Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - N. Hirose
- Department of Orthodontics; Applied Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - T. Awada
- Department of Orthodontics; Applied Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - M. Miyauchi
- Department of Oral Maxillofacial and Pathobiology; Basic Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - T. Takata
- Department of Oral Maxillofacial and Pathobiology; Basic Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
| | - W. Li
- Department of Orofacial Sciences; University of California; San Francisco CA USA
| | - L. Zhu
- Department of Orofacial Sciences; University of California; San Francisco CA USA
| | - P.K. Denbesten
- Department of Orofacial Sciences; University of California; San Francisco CA USA
| | - K. Tanimoto
- Department of Orthodontics; Applied Life Sciences; Hiroshima University; Institute of Biomedical & Health Sciences; Hiroshima Japan
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Yoshimi Y, Suematsu A, Hisada A, Takamatsu Y, Niwa K, Yokoe M, Noguchi Y. [Case report; A case of chronic active EB virus infection]. ACTA ACUST UNITED AC 2012; 101:2298-300. [PMID: 22973702 DOI: 10.2169/naika.101.2298] [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: 11/06/2022]
Affiliation(s)
- Yusuke Yoshimi
- Division of General Internal Medicine, Nagoya Daini Red Cross Hospital, Japan
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Tanimoto K, Huang YC, Tanne Y, Kunimatsu R, Michida M, Yoshioka M, Ozaki N, Sasamoto T, Yoshimi Y, Kato Y, Tanne K. Amelogenin enhances the osteogenic differentiation of mesenchymal stem cells derived from bone marrow. Cells Tissues Organs 2012; 196:411-9. [PMID: 22653431 DOI: 10.1159/000335912] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2011] [Indexed: 02/03/2023] Open
Abstract
Amelogenins are the major constituent of developing extracellular enamel matrix proteins and are understood to have an exclusively epithelial origin. Recent studies have demonstrated that amelogenins can be detected in other tissues, including bone marrow mesenchymal stem cells (MSCs), but the role of amelogenins in MSCs remains unclear. The purpose of this study was to examine the effect of recombinant human full-length amelogenin (rh174) on the osteogenic differentiation of cultured human MSCs. MSCs isolated from human bone marrow were cultured in osteoblastic differentiation medium with 0, 10 or 100 ng/ml rh174. The mRNA levels of bone markers were examined by real-time PCR analysis. Alkaline phosphatase (ALP) activity and calcium concentration were determined. Mineralization was evaluated by alizarin red staining. The mRNA levels of ALP, type I collagen, osteopontin and bone sialoprotein in the MSCs treated with rh174 became significantly higher than those in non-treated controls. Treatment of MSCs with rh174 also enhanced ALP activity and calcium concentration, resulting in enhanced mineralization, as denoted by high intensity of alizarin red staining. In conclusion, the present study showed that rh174 enhances the mineralization accompanied by the upregulation of bone markers in human bone marrow MSCs during osteogenic differentiation, suggesting a certain role of amelogenin in the modulation of osteogenic differentiation of MSCs.
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Affiliation(s)
- K Tanimoto
- Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan.
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Kita T, Fujimura M, Myou S, Ishiura Y, Abo M, Katayama N, Nishitsuji M, Yoshimi Y, Nomura S, Oribe Y, Nakao S. Potentiation of allergic bronchoconstriction by repeated exposure to formaldehyde in guinea-pigs in vivo. Clin Exp Allergy 2004; 33:1747-53. [PMID: 14656365 DOI: 10.1111/j.1365-2222.2003.01826.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Indoor formaldehyde (FA) might worsen allergies and be an underlying factor for the increasing incidence and severity of asthma; the exact mechanism, however, remains unclear. OBJECTIVE The present study examined the effects of repeated exposure to FA on methacholine- and antigen-induced bronchoconstriction in guinea-pigs in vivo. METHODS First, non-sensitized guinea-pigs were transnasally treated with 0.1 or 1.0% FA or saline three times a week for 6 weeks, and increasing concentrations of methacholine (50, 100, and 200 microg/mL) were inhaled at 5-min intervals. Second, guinea-pigs pre-treated with transnasal administration of FA or saline using the same protocol were passively sensitized with anti-ovalbumin (OA) serum 7 days before antigen challenge. Third, guinea-pigs were actively sensitized with OA and pre-treated with transnasal administration of FA or saline using the same protocol. The lateral pressure of the tracheal tube (Pao) was measured under anesthesia and artificial ventilation. RESULTS The antigen-induced increase in Pao in actively sensitized guinea-pigs was significantly potentiated by FA exposure in a dose-dependent manner. The dose-response curve of the methacholine-induced increase in Pao in non-sensitized guinea-pigs or of the antigen-induced increase in Pao in passively sensitized guinea-pigs was not altered by FA exposure. Transnasal administration of FA significantly increased the serum anti-OA homocytotropic antibody titre (IgG) as measured by the passive cutaneous anaphylaxis reaction in actively sensitized guinea-pigs. CONCLUSION The results suggest that repeated exposure to FA worsens allergic bronchoconstriction through enhancing antigen sensitization.
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Affiliation(s)
- T Kita
- Respiratory Medicine, Cellular Transplantation Biology, Kanazawa University Postgraduate School of Medicine, Kanazawa 920-8640, Japan.
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Yoshimi Y, Fujimura M, Myou S, Tachibana H, Hirose T. Effect of thromboxane A2 (TXA2) synthase inhibitor and TXA2 receptor antagonist alone and in combination on antigen-induced bronchoconstriction in guinea pigs. Prostaglandins Other Lipid Mediat 2001; 65:1-9. [PMID: 11352222 DOI: 10.1016/s0090-6980(01)00099-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Thromboxane A2 (TXA2) causes bronchoconstriction and bronchial hyperresponsiveness. Two types of TXA2 modifiers, one synthase inhibitor and one receptor antagonist, are widely used for the treatment of asthma in Japan. Although the target of TXA2 modifiers is to inhibit bioactivity of TXA2, the pharmacological properties are somewhat different between these drugs. We studied the inhibitory effects of the TXA2 synthase inhibitor CS-518 and the TXA2 receptor antagonist S-1452 alone and in combination on antigen-induced bronchoconstriction in passively sensitized guinea pigs treated with diphenhydramine. Both CS-518 and S-1452 inhibited the antigen-induced bronchoconstriction dose-dependently with the plateau. The combination of these drugs at the maximal inhibitory doses did not have any more effect compared with each single dosing. The combination at the submaximal doses tended to show an additive effect, but the effect was not significant. These findings suggest that other prostanoids such as PGE2, PGI2, PGD2 and PGF2alpha may not take an important role in the antiasthmatic effects of TXA2 modifiers.
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Affiliation(s)
- Y Yoshimi
- The Third Department of Internal Medicine, Kanazawa University School of Medicine, Japan
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11
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Myou S, Fujimura M, Kamio Y, Kita T, Katayama N, Abo M, Yoshimi Y, Nishitsuji M, Nomura S, Hashimoto T, Nakao S. Effect of a cysteinyl leukotriene antagonist, pranlukast hydrate, on acetaldehyde-induced bronchoconstriction in asthmatic patients. Prostaglandins Leukot Essent Fatty Acids 2001; 65:41-4. [PMID: 11487307 DOI: 10.1054/plef.2001.0286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Acetaldehyde is a main factor of alcohol-induced asthma. We previously reported that the cysteinyl leukotriene (cys-LT) receptor antagonist, pranlukast hydrate, inhibits acetaldehyde-induced airway hyperresponsiveness in guinea pigs. The purpose of this study was to evaluate the involvement of cys-LT on bronchial responsiveness to acetaldehyde in asthmatic patients. We investigated the bronchial response to inhalation of acetaldehyde in 10 asthmatic patients, who were treated with placebo or pranlukast hydrate (225.5 mg), a cys-LT receptor antagonist, twice a day for 1 wk using a double-blind, randomized, placebo-controlled, cross-over design. Although a remarkable improvement of acetaldehyde bronchoconstriction was observed in 3 out of 10 subjects, PC(20)-AcCHO values were identical between placebo [12.0 (GSEM, 1.192) mg/ml] and pranlukast [14.7 (GSEM, 1.245) mg/ml] groups. The changes in bronchial responsiveness to acetaldehyde were similar in the six patients who had never experienced alcohol-induced asthma and the four who had. In conclusion, cys-LTs are not involved in acetaldehyde-induced bronchoconstriction.
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Affiliation(s)
- S Myou
- The Third Department of Internal Medicine, Kanazawa University School of Medicine, Kanazawa, Japan.
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12
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Myou S, Fujimura M, Kita T, Katayama N, Abo M, Yoshimi Y, Nishitsuji M, Nomura S, Nakao S. Sensory neuropeptides are not involved in acetaldehyde-induced bronchoconstriction in guinea-pigs. J Auton Pharmacol 2001; 21:139-43. [PMID: 11844021 DOI: 10.1046/j.1365-2680.2001.00217.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
1. Alcohol-induced asthma is characterized by worsening of asthmatic symptoms after alcohol ingestion. Acetaldehyde, a metabolite of ethanol, is thought to be a main factor of alcohol-induced asthma. Although airway sensory nerves are known to be activated in asthma, there have been no studies investigating the role of tachykinins in the airway response to acetaldehyde. The purpose of the present study was to evaluate the involvement of tachykinins on acetaldehyde-induced bronchoconstriction in guinea-pigs. 2. After capsaicin desensitization or intravenous administration of 10 mg kg(-1) FK224, a NK1 and NK2 dual antagonist, airway responses to ascending doses (2.5-20 mg ml(-1)) of inhaled acetaldehyde was examined using a modified Konzett-Rössler method in guinea-pigs. 3. Inhalation of acetaldehyde induced bronchoconstriction in a dose-dependent manner. The FK224 failed to reduce the acetaldehyde-induced bronchoconstriction. Pretreatment with capsaicin did not alter the bronchoconstriction induced by acetaldehyde at a dose of 2.5-10 mg ml(-1). Pretreatment with capsaicin slightly, but significantly, inhibited bronchoconstriction induced by 20 mg ml(-1) of acetaldehyde. 4. The present results suggest that tachykinins are not involved in acetaldehyde-induced bronchoconstriction in guinea-pigs.
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Affiliation(s)
- S Myou
- The Third Department of Internal Medicine, Kanazawa University School of Medicine, 13-1 Takara-machi, Kanazawa 920-8641, Japan
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13
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Yoshino M, Yoshimi Y, Taniguchi M, Nakamura S, Ikeda T. Syndrome of inappropriate secretion of antidiuretic hormone associated with idiopathic normal pressure hydrocephalus. Intern Med 1999; 38:290-2. [PMID: 10337945 DOI: 10.2169/internalmedicine.38.290] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 79-year-old woman suffering from urinary incontinence and unsteady gait was diagnosed as having idiopathic normal pressure hydrocephalus (NPH) with hyponatremia due to the syndrome of inappropriate secretion of antidiuretic hormone (SIADH). The concentration of antidiuretic hormone was high while the plasma osmolality was low in the presence of concentrated urine during the episodes of hyponatremia. Magnetic resonance imaging (MRI) of the head showed enlargement of the third and lateral ventricles. After ventriculoperitoneal shunt surgery, the symptoms of NPH and hyponatremia improved. It may be possibly explained that mechanical pressure on the hypothalamus from the third ventricle is responsible for hyponatremia.
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Affiliation(s)
- M Yoshino
- Department of Internal Medicine, Tsuruga City Hospital
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14
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Abstract
The changes in Asn-linked oligosaccharide composition in the murine cerebrum during development have been examined by high-performance liquid chromatography (HPLC) and electrospray ionization mass spectrometry (ESI-MS). The oligosaccharides, obtained from murine cerebrum in several developmental stages, were separated by HPLC on anion-exchange and reverse-phase columns. We found that two Asn-linked oligosaccharides, designated oligosaccharide I and oligosaccharide II, had their expression changed during postnatal development. Whereas oligosaccharide I was reduced during brain development, oligosaccharide II was increased. The structures of oligosaccharides I and II were analyzed by ESI-MS and sequential exoglycosidase digestions. Judging from the molecular and fragment ions in each oligosaccharide, the oligosaccharide I was composed of 5Hex+2HexNAc+ABOE (MW 1467.2) and the oligosaccharide II was 3Hex+4HexNAc+DoHex+ABOE (MW 1695.2). The results of sequential exoglycosidase digestion indicated that the oligosaccharide I was an oligomannose type saccharide and the oligosaccharide II was a biantennary complex type saccharide including fucose. The proposed structures are shown below. These results offer an important clue to the role of Asn-linked oligosaccharides associated with development of the central nervous system.
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Affiliation(s)
- Y Yoshimi
- Department of Applied Biological Science, Faculty of Science and Technology, Science University of Tokyo, 2641 Yamazaki, Noda, Chiba, Japan.
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15
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Miyasaka T, Iijima K, Sakai K, Yoshimi Y, Aketagawa J, Tamura H, Tanaka S. Development of a stopped flow reactor for the rapid, high sensitivity measurement of endotoxin concentration in dialysate. ASAIO J 1999; 45:104-8. [PMID: 9952018 DOI: 10.1097/00002480-199901000-00023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Continuous measurement of endotoxin concentration in dialysate, using a separated endotoxin-specific limulus reagent, promises rapid measurement without the complex operating procedures of the limulus reagent. To achieve high sensitivity measurements in a short period of time, an improved system featuring stopped-flow operation was developed. To prevent dispersion of the limulus reagent and residence of reacting solution containing the limulus reagent in the system reactor, the circuit in the reactor was changed from a coil configuration to a straight line, and its length was reduced. An endotoxin test solution was supplied at 760 microl/min, into which 40 microl of limulus reagent was pulse-injected. Flow was stopped at the point where the test solution entered the reactor. After the completion of the reaction, the solution was passed through a spectrophotometer and the relationship between reaction time and absorbance was determined. Peak tailing was less than that obtained by the conventional technique, good correlation was obtained from the peak height, and a decrease in sensitivity caused by broadening of the peak was suppressed. The lower detection limit of dialysate was 100 endotoxin units (EU)/L at a reaction time of 20 minutes, and 60 EU/L at 30 minutes. Change from the monitoring system to stop-flow operation made high sensitivity monitoring of endotoxin concentration with a short reaction time possible.
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Affiliation(s)
- T Miyasaka
- Department of Chemical Engineering, Waseda University, Tokyo, Japan
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16
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Miyasaka T, Jinbo Y, Sakai K, Yoshimi Y. Determination of Glucose Concentration by Electroluminescence of an Indium-Tin Oxide Electrode. Food and Bioproducts Processing 1998. [DOI: 10.1205/096030898531864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Miyasaka T, Taniyama Y, Sakai K, Yoshimi Y. Development of a glucose sensor with on/off control of enzyme activity without the effects of protein adsorption. ASAIO J 1997; 43:M505-9. [PMID: 9360094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The main factor mitigating against the realization of a hypodermically inserted glucose sensor for an artificial pancreas is the change in response current due to fibroblast adhesion and protein adsorption to the sensor surface. To overcome this problem, we have developed a method whereby the activity of glucose oxidase (GOD) fixed on the membrane of the sensor surface is switched on and off, and measurements are made during a transient state in which the glucose concentration gradient within the GOD membrane is small. Measuring in a transient state while GOD activity is being controlled, a correlation was observed between glucose concentration and response current in a phosphate buffer solution. Calibration curves of response current against glucose concentration in aqueous solutions of human serum albumin and in phosphate buffer solution were then compared using the transient method and a steady state method without control of GOD activity. In addition, glucose concentration was measured in bovine plasma for 480 min, and the time courses of the response currents for the transient and steady state measurements were compared. It was found that in both experiments the response current decreased greatly under steady state measurement as a result of protein adsorption, but during the transient measurement, response current was virtually unchanged. By measuring glucose concentration in the transient state while controlling GOD activity, it is possible to inhibit the effects of protein adsorption.
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Affiliation(s)
- T Miyasaka
- Department of Chemical Engineering, Waseda University, Tokyo, Japan
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18
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19
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Aoyagi S, Yoshimi Y, Sakai K, Aketagawa J, Tanaka S. Development of a new endotoxin sensor with intermittent injection of limulus reagent for continuous monitoring of dialysate fluid. ASAIO J 1995; 41:M601-4. [PMID: 8573875 DOI: 10.1097/00002480-199507000-00081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
This report describes a method of continuously, stably, and inexpensively measuring endotoxin (ET) concentrations in dialysate fluid using an ET sensor with intermittent injection of limulus reagent. An ET solution simulating dialysate fluid was sampled in a single tube at a flow rate of 260 microliters/min and mixed with 30 microliters of limulus reagent intermittently injected into the tube. The absorbance of the solution was measured after the limulus reaction at 313 or 318 degrees K at 26 min. A good linear relationship (r = 0.98) between peak area of absorbance and ET concentration at ET concentrations ranging from 0 to 0.12 endotoxin unit (EU)/ml was obtained, using a spectrophotometer with a cell volume of 8 microliter. The baseline rose after the measurements were taken because the cell volume was so small that the cell was stuffed with gel. A good linear relationship (r = 1.00) at ET concentration of 0.1-0.25 EU/ml was also obtained, and the baseline was unchanged after measurements, using a metal free spectrophotometer with a cell volume of 420 microliters. In conclusion, to measure ET concentrations below 0.1 EU/ml, the cell volume of a metal free spectrophotometer should be minimal.
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Affiliation(s)
- S Aoyagi
- Department of Chemical Engineering, Waseda University, Tokyo, Japan
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20
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Nakamura K, Hiraishi A, Yoshimi Y, Kawaharasaki M, Masuda K, Kamagata Y. Microlunatus phosphovorus gen. nov., sp. nov., a new gram-positive polyphosphate-accumulating bacterium isolated from activated sludge. Int J Syst Bacteriol 1995; 45:17-22. [PMID: 7857797 DOI: 10.1099/00207713-45-1-17] [Citation(s) in RCA: 106] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Polyphosphate-accumulating bacteria that were previously isolated from activated sludge and exhibited high phosphate removal activity were studied taxonomically and phylogenetically. These organisms were gram-positive, coccus-shaped, aerobic chemoorganotrophs that had a strictly respiratory type of metabolism in which oxygen was a terminal electron acceptor. They accumulated large amounts of polyphosphate under aerobic conditions. The major quinone was menaquinone MK-9(H4). The cell wall peptidoglycan contained LL-diaminopimelic acid. The guanine-plus-cytosine content of the DNA was 67.9 mol%. Our isolates were similar phenotypically and chemotaxonomically to Luteococcus japonicus, which was proposed recently as a new genus and species. However, our isolates differed from L. japonicus in cellular fatty acid composition and some other traits. A phylogenetic analysis based on 16S rRNA sequences showed that our isolate differ from the genus Luteococcus and other genera belonging to the high-G+C-content gram-positive group. Accordingly, we concluded that our strain NM-1T (T = type strain) should be assigned to a new genus and species, for which we propose the name Microlunatus phosphovorus.
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Affiliation(s)
- K Nakamura
- National Institute of Bioscience and Human-Technology, Agency of Industrial Science and Technology, Ibaraki, Japan
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21
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Yoshimi Y, Yotsumoto M, Sakai K. A novel method for the continuous measurement of endotoxin concentration. ASAIO J 1995; 41:68-71. [PMID: 7727824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Conventional limulus amebocyte lysate tests involved procedures to prevent contamination by atmospheric endotoxins. To address this problem, the authors have proposed a technique in which the sampling, reagent mixing, and reaction steps are carried out consecutively in a single tube. Since reagents do not come in contact with the atmosphere, the new technique promises stable determination of the concentration of endotoxins in dialysate fluid. An aqueous solution of endotoxin simulating dialysate fluid was sampled in a silicone rubber tube from a sterile infusion bag, then mixed with an indicator in the same tube. After reaction at 310 K, measurements were made of light absorbance at 405 nm and its linearity with endotoxin concentration was determined. Results showed a high degree of linearity (correlation coefficient of not less than 0.99) at endotoxin concentrations of 0-15 pg/ml. The time for the reaction was shortened to 12 min, in which case the response time was 15 min. It is suggested that this new test for determining endotoxin concentration using limulus amebocyte lysate reagent, in which all three steps--sampling, mixing, and reaction--proceed continuously in a single tube, offers higher reliability, greater ease of operation, and shorter response time than conventional tests.
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Affiliation(s)
- Y Yoshimi
- Department of Chemical Engineering Waseda University, Tokyo, Japan
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22
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Yoshimi Y, Marutani H, Sakai K, Aketagawa J. A new procedure for stable quantification of endotoxin in dialysate fluid using Limulus reagent. ASAIO J 1994; 40:M808-10. [PMID: 8555626 DOI: 10.1097/00002480-199407000-00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
For reliable determination of endotoxin, the activation of enzymes in lysate before measurement should be prevented, and the authors have designed a new procedure to effect this by dissolving the enzymes in lysate in a buffer solution of low pH. A given amount of the enzymes in lysate was dissolved in a lower pH buffer solution (pH 6.1-6.3) and the substrate was dissolved in a higher pH buffer solution (pH 8.0). After standing for 0-24 hr, both solutions were mixed with the sample solution. Data on blank absorbance and calibration line slope obtained by the new procedure were compared with those obtained by the conventional procedure. In the conventional procedure, blank absorbance increased with standing time, reaching approximately seven times the initial value in 24 hr, whereas in the improved procedure, it increased by 1.5 times at a standing time of 3 hr, after which it was independent of standing time. The change in slope of the calibration line with standing time was more gradual in the improved procedure than in the conventional procedure. The authors conclude that the activation of enzymes in lysate can be prevented by dissolving the enzymes in a buffer solution of low pH, and that this procedure is effective for long-term monitoring of endotoxin concentration.
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Affiliation(s)
- Y Yoshimi
- Department of Chemical Engineering, Waseda University, Tokyo, Japan
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23
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Yoshimi Y, Yonezawa S, Sugiyama K, Matsui H, Sato C. [The effects of the viewpoints and observers' traits on the observational learning of altruistic behavior]. Shinrigaku Kenkyu 1989; 60:98-104. [PMID: 2810951 DOI: 10.4992/jjpsy.60.98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study was to examine the changes of altruistic responses through observational learning (OL) in elementary school children (4th graders) with the conditions of the different viewpoints and observers' traits. The OL was the symbolic modeling of altruistic behavior by presentation of pictures with narration. All the stories had the same situation, but differed whether the actor behaved himself in an altruistic fashion to the object, or not. Observers' viewpoints were determined by the instruction: they were told to observe the story as if they were one of the characters and to pay attention to emotional responses or behavior of the character. The emphasis of each story corresponded to the viewpoint. Out of these eight combined experimental conditions six were performed. Traits were concerned with observers' impression, empathy, and evaluation of the story. The response measure was the change of rating between pre- and post-questionnaires through observation. The effect of OL was higher significantly when the viewpoint directed to the characters' emotion. Observers who reacted strongly to empathy and impression items showed higher altruistic changes.
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Affiliation(s)
- Y Yoshimi
- Department of Psychology, College of Literature, Aoyama Gakuin University, Tokyo
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24
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Yoshimi Y, Yonezawa S, Matsui H. [Modeled events and observers' traits underlying observational learning of altruistic behavior]. Shinrigaku Kenkyu 1987; 58:218-25. [PMID: 3450911 DOI: 10.4992/jjpsy.58.218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The present experiments investigated the changes of altruistic responses through observational learning (OL) in elementary school children (ages 10 and 11) with relation to the characteristics of the modeled events and the observers' traits. The former included certain categories of observed materials and the methods of presentation. The latter included subject's impression, empathy for, and evaluation of these materials. The OL was the symbolic modeling of altruistic behavior by presentation of pictures with narration. The response measures were the rating of pre- and post-questionnaires on the altruistic stories. The main result of Experiment I showed that subjects responded selectively to each pretest questionnaire, and that the observational learning was most effective on the similar kind of behavior type. The generalization of OL to other items of categories was also observed. In Experiment II, the combined effect of a pair of observed materials (positive or negative altruistic content) was examined. The effect of OL was highest when the material presented was a P-N pair, lowest when it was a N-N pair. The observers' traits in empathy, impression, and evaluation on observed materials were positively correlated to the effect of OL.
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Affiliation(s)
- Y Yoshimi
- Department of Psychology, College of Literature, Aoyama Gakuin University, Tokyo
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25
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Yoshimi Y. [Hope for tomorrow: a life with my husband who suffered from cancer]. Kangogaku Zasshi 1986; 50:1238-43. [PMID: 3641973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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26
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Yoshimi Y. [Diary of a cancer patient. A positive attitude in spite of loss of voice. 12. Homecoming]. Kangogaku Zasshi 1985; 49:1426-8. [PMID: 3854099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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27
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Yoshimi Y. [Diary of a cancer patient. A positive attitude in spite of a loss of the voice. 11. The support of the family, friends, and the nursing personnel]. Kangogaku Zasshi 1985; 49:1306-8. [PMID: 3852918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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28
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Yoshimi Y. [Diary of a cancer patient. Positive attitude in spite of loss of voice. 10. Patients in the ward]. Kangogaku Zasshi 1985; 49:1186-8. [PMID: 3854076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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29
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Yoshimi Y. [Positive attitude toward recovery. Diary of a cancer patient. 9. Support of his family as a vital element in recovery]. Kangogaku Zasshi 1985; 49:1066-8. [PMID: 3850979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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30
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Yoshimi Y. [Diary of a cancer patient: a positive attitude in spite of a loss of vocalization. 8. Recovery]. Kangogaku Zasshi 1985; 49:946-8. [PMID: 3850150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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31
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Yoshimi Y. [Record of a cancer patient: a positive attitude toward recovery in spite of a loss of speech. Return of suffering]. Kangogaku Zasshi 1985; 49:826-8. [PMID: 3848528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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32
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Yoshimi Y. [Diary of a cancer patient. A positive attitude in spite of a loss of the voice. The first experience in oral feeding after surgery]. Kangogaku Zasshi 1985; 49:706-8. [PMID: 3848510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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33
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Yoshimi Y. [Diary of a cancer patient: a positive attitude in spite of a loss of his voice. 5. Surgery and the postoperative course]. Kangogaku Zasshi 1985; 49:586-8. [PMID: 3847548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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34
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Yoshimi Y. [Record of a cancer patient. A positive attitude of the patient. 4: "See you again!"]. Kangogaku Zasshi 1985; 49:466-8. [PMID: 3846657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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35
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Yoshimi Y. [Record by a cancer patient. A positive attitude in spite of loss of vocal function. 3. Return of the agony]. Kangogaku Zasshi 1985; 49:346-8. [PMID: 3845186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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36
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Yoshimi Y. [Record by a cancer patient. Positive attitude in spite of a loss of the voice. 2. From the hell to the heaven]. Kangogaku Zasshi 1985; 49:226-8. [PMID: 3845161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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37
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Sueoka S, Matsukura S, Yokota M, Yoshimi Y, Fujita T. [Preliminary evaluation and clinical application of SPAC cortisol kit (solid phase RIA) (author's transl)]. Horumon To Rinsho 1980; 28:1101-7. [PMID: 7460362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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38
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Yoshimi Y. [My activities as a midwife at a public health clinic]. Josanpu Zasshi 1980; 34:439-44. [PMID: 6905880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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39
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Yoshimi Y. [Pregnancy and food habits. The nutritional state of the pregnant woman observed by midwives in clinical facilities. 2. The nutritonal status in the district sercice]. Josanpu Zasshi 1980; 34:2w4-6. [PMID: 6901796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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