1
|
Murakami Y, Ikuta S, Fukuda W, Akasaka N, Maruyama JI, Shinma S, Fukusaki E, Fujiwara S. Identification and enzymatic properties of arginine decarboxylase from Aspergillus oryzae. Appl Environ Microbiol 2024:e0029424. [PMID: 38624200 DOI: 10.1128/aem.00294-24] [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: 02/17/2024] [Accepted: 03/23/2024] [Indexed: 04/17/2024] Open
Abstract
Aspergillus oryzae spores, when sprinkled onto steamed rice and allowed to propagate, are referred to as rice "koji." Agmatine, a natural polyamine derived from arginine through the action of arginine decarboxylase (ADC), is abundantly produced by solid state-cultivated rice koji of A. oryzae RIB40 under low pH conditions, despite the apparent absence of ADC orthologs in its genome. Mass spectrometry imaging revealed that agmatine was accumulated inside rice koji at low pH conditions, where arginine was distributed. ADC activity was predominantly observed in substrate mycelia and minimally in aerial mycelia. Natural ADC was isolated from solid state-cultivated A. oryzae rice koji containing substrate mycelia, using ammonium sulfate fractionation, ion exchange, and gel-filtration chromatography. The purified protein was subjected to sodium dodecyl sulfate poly-acrylamide gel electrophoresis (SDS-PAGE), and the detected peptide band was digested for identification by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The gene AO090102000327 of strain RIB40 was identified, previously annotated as phosphatidylserine decarboxylase (PSD), and encoded a 483-amino acid peptide. Recombinant protein encoded by AO090102000327 was expressed in Escherichia coli cells cultivated at 20°C, resulting in the detection of 49 kDa and 5 kDa peptides. The protein exhibited pyruvoyl-dependent decarboxylase activity, favoring arginine over ornithine and showing no activity with phosphatidylserine. The gene was designated Ao-adc1. Ao-ADC1 expression in rice koji at pH 4-6 was confirmed through western blotting using the anti-Ao-ADC1 serum. These findings indicate that Ao-adc1 encodes arginine decarboxylase involved in agmatine production.IMPORTANCEGene AO090102000327 in A. oryzae RIB40, previously annotated as a PSD, falls into a distinct clade when examining the phylogenetic distribution of PSDs. Contrary to the initial PSD annotation, our analysis indicates that the protein encoded by AO090102000327 is expressed in the substrate mycelia area of solid state-cultivated A. oryzae rice koji and functions as an arginine decarboxylase (ADC). The clade to which Ao-ADC1 belongs includes three other Ao-ADC1 paralogs (AO090103000445, AO090701000800, and AO090701000802) that presumably encode ADC rather than PSDs. Regarding PSD, AO090012000733 and AO090005001124 were speculated to be nonmitochondrial and mitochondrial PSDs in A. oryzae RIB40, respectively.
Collapse
Affiliation(s)
- Yui Murakami
- Department of Biosciences, Graduate School of Science and Technology, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
| | - Soichiro Ikuta
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
| | - Wakao Fukuda
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
| | - Naoki Akasaka
- Department of Biosciences, Graduate School of Science and Technology, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
- Laboratory for Circular Bioeconomy Development, Office of Society-Academia Collaboration for Innovation, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto, Japan
| | - Jun-Ichi Maruyama
- Department of Biotechnology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shuichi Shinma
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
- Osaka University Shimadzu Analytical Innovation Laboratory, Osaka University, Suita,, Osaka, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, Japan
| | - Eiichiro Fukusaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, Suita, Osaka, Japan
- Osaka University Shimadzu Analytical Innovation Laboratory, Osaka University, Suita,, Osaka, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, Graduate School of Science and Technology, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Gakuen-Uegahara, Sanda, Hyogo, Japan
| |
Collapse
|
2
|
Morimoto K, Juma KM, Yamagata M, Takita T, Kojima K, Suzuki K, Yanagihara I, Fujiwara S, Yasukawa K. Increase in the solubility of uvsY using a site saturation mutagenesis library for application in a lyophilized reagent for recombinase polymerase amplification. Mol Biol Rep 2024; 51:367. [PMID: 38411701 PMCID: PMC10899321 DOI: 10.1007/s11033-024-09367-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/19/2024] [Indexed: 02/28/2024]
Abstract
BACKGROUND Recombinase uvsY from bacteriophage T4, along with uvsX, is a key enzyme for recombinase polymerase amplification (RPA), which is used to amplify a target DNA sequence at a constant temperature. uvsY, though essential, poses solubility challenges, complicating the lyophilization of RPA reagents. This study aimed to enhance uvsY solubility. METHODS Our hypothesis centered on the C-terminal region of uvsY influencing solubility. To test this, we generated a site-saturation mutagenesis library for amino acid residues Lys91-Glu134 of the N-terminal (His)6-tagged uvsY. RESULTS Screening 480 clones identified A116H as the variant with superior solubility. Lyophilized RPA reagents featuring the uvsY variant A116H demonstrated enhanced performance compared to those with wild-type uvsY. CONCLUSIONS The uvsY variant A116H emerges as an appealing choice for RPA applications, offering improved solubility and heightened lyophilization feasibility.
Collapse
Affiliation(s)
- Kenta Morimoto
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Masaya Yamagata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Kenji Kojima
- Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, 565-0871, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-Shi, Osaka, 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo, 669-1330, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan.
| |
Collapse
|
3
|
Tanakura Y, Uekawa Y, Shige Y, Fukuda W, Ikuta S, Wu HN, Yasukawa K, Yanagihara I, Fujiwara S. Expression of a recombinant protein by an acetic acid bacterial host. J Biotechnol 2024; 380:38-50. [PMID: 38135188 DOI: 10.1016/j.jbiotec.2023.12.009] [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: 10/18/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023]
Abstract
We evaluated the suitability of Komagataeibacter europaeus, a vinegar production organism adept at synthetic media growth, as a host for heterologous gene expression. Cryptic plasmids (pGE1 and pGE2 derivatives) from K. europaeus strain KGMA0119 were employed as vectors for heterologous gene expression. The focus was placed on the groES promoter as a potential inducible switch. The groES promoter was fused with the EGFP gene and introduced into a pGE1 derivative to assess its suitability. Ethanol, acetic acid, and heat stresses were examined under various conditions for induction. EGFP transcription surged 600-fold when late logarithmic phase K. europaeus cells, cultured at 30 °C, endured heat stress at 40 °C, coupled with 20% acetic acid and 30% ethanol stress after an additional 6-hour cultivation. This robust induction system was then applied to express two proteins, Tth pol from the thermophilic bacterium Thermus thermophilus strain M1 and UPV230, a restriction enzyme from the acid-tolerant microorganism Ureaplasma parvum, known to cause vaginal infections and miscarriages. Both Tth pol and UPV230 were successfully expressed in K. europaeus cells and purified. The recovery of Tth pol from K. europaeus cells (480 µg protein per liter culture) was approximately half that from E. coli (960 µg protein per liter culture). In contrast, UPV230 recovery from K. europaeus cells (640 µg protein per liter culture) was nearly 10 times higher than that from Escherichia coli (66 µg protein per liter). The data highlights the potential of acetic acid bacteria as a host for producing acidophilic proteins. The shift in recognition from a 6-base sequence to a 4-base sequence of UPV230 was observed, accompanied by a change in structure as the pH transitioned from acidic pH to near-neutral pH.
Collapse
Affiliation(s)
- Yuya Tanakura
- Department of Biosciences, Graduate School of Science and Technology, Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Yasuyoshi Uekawa
- Department of Biosciences, Graduate School of Science and Technology, Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Yuki Shige
- Department of Biosciences, Graduate School of Science and Technology, Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Wakao Fukuda
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Soichiro Ikuta
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Heng Ning Wu
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi, Osaka 594-1101, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi, Osaka 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, Graduate School of Science and Technology, Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan; Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan.
| |
Collapse
|
4
|
Kanis JA, Johansson H, McCloskey EV, Liu E, Åkesson KE, Anderson FA, Azagra R, Bager CL, Beaudart C, Bischoff-Ferrari HA, Biver E, Bruyère O, Cauley JA, Center JR, Chapurlat R, Christiansen C, Cooper C, Crandall CJ, Cummings SR, da Silva JAP, Dawson-Hughes B, Diez-Perez A, Dufour AB, Eisman JA, Elders PJM, Ferrari S, Fujita Y, Fujiwara S, Glüer CC, Goldshtein I, Goltzman D, Gudnason V, Hall J, Hans D, Hoff M, Hollick RJ, Huisman M, Iki M, Ish-Shalom S, Jones G, Karlsson MK, Khosla S, Kiel DP, Koh WP, Koromani F, Kotowicz MA, Kröger H, Kwok T, Lamy O, Langhammer A, Larijani B, Lippuner K, Mellström D, Merlijn T, Nordström A, Nordström P, O'Neill TW, Obermayer-Pietsch B, Ohlsson C, Orwoll ES, Pasco JA, Rivadeneira F, Schott AM, Shiroma EJ, Siggeirsdottir K, Simonsick EM, Sornay-Rendu E, Sund R, Swart KMA, Szulc P, Tamaki J, Torgerson DJ, van Schoor NM, van Staa TP, Vila J, Wareham NJ, Wright NC, Yoshimura N, Zillikens MC, Zwart M, Vandenput L, Harvey NC, Lorentzon M, Leslie WD. Previous fracture and subsequent fracture risk: a meta-analysis to update FRAX. Osteoporos Int 2023; 34:2027-2045. [PMID: 37566158 PMCID: PMC7615305 DOI: 10.1007/s00198-023-06870-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/22/2023] [Indexed: 08/12/2023]
Abstract
A large international meta-analysis using primary data from 64 cohorts has quantified the increased risk of fracture associated with a previous history of fracture for future use in FRAX. INTRODUCTION The aim of this study was to quantify the fracture risk associated with a prior fracture on an international basis and to explore the relationship of this risk with age, sex, time since baseline and bone mineral density (BMD). METHODS We studied 665,971 men and 1,438,535 women from 64 cohorts in 32 countries followed for a total of 19.5 million person-years. The effect of a prior history of fracture on the risk of any clinical fracture, any osteoporotic fracture, major osteoporotic fracture, and hip fracture alone was examined using an extended Poisson model in each cohort. Covariates examined were age, sex, BMD, and duration of follow-up. The results of the different studies were merged by using the weighted β-coefficients. RESULTS A previous fracture history, compared with individuals without a prior fracture, was associated with a significantly increased risk of any clinical fracture (hazard ratio, HR = 1.88; 95% CI = 1.72-2.07). The risk ratio was similar for the outcome of osteoporotic fracture (HR = 1.87; 95% CI = 1.69-2.07), major osteoporotic fracture (HR = 1.83; 95% CI = 1.63-2.06), or for hip fracture (HR = 1.82; 95% CI = 1.62-2.06). There was no significant difference in risk ratio between men and women. Subsequent fracture risk was marginally downward adjusted when account was taken of BMD. Low BMD explained a minority of the risk for any clinical fracture (14%), osteoporotic fracture (17%), and for hip fracture (33%). The risk ratio for all fracture outcomes related to prior fracture decreased significantly with adjustment for age and time since baseline examination. CONCLUSION A previous history of fracture confers an increased risk of fracture of substantial importance beyond that explained by BMD. The effect is similar in men and women. Its quantitation on an international basis permits the more accurate use of this risk factor in case finding strategies.
Collapse
Affiliation(s)
- J A Kanis
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia.
- Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, UK.
| | - H Johansson
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Sahlgrenska Osteoporosis Centre, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - E V McCloskey
- Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, UK
- MRC Versus Arthritis Centre for Integrated research in Musculoskeletal Ageing, Mellanby Centre for Musculoskeletal Research, University of Sheffield, Sheffield, UK
| | - E Liu
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
| | - K E Åkesson
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Orthopedics, Skåne University Hospital, Malmö, Sweden
| | - F A Anderson
- GLOW Coordinating Center, Center for Outcomes Research, University of Massachusetts Medical School, Worcester, MA, USA
| | - R Azagra
- Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain
- Health Centre Badia del Valles, Catalan Institute of Health, Barcelona, Spain
- PRECIOSA-Fundación para la investigación, Barberà del Vallés, Barcelona, Spain
| | - C L Bager
- Nordic Bioscience A/S, Herlev, Denmark
| | - C Beaudart
- WHO Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Division of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
- Department of Health Services Research, University of Maastricht, Maastricht, the Netherlands
| | - H A Bischoff-Ferrari
- Department of Aging Medicine and Aging Research, University Hospital, Zurich, and University of Zurich, Zurich, Switzerland
- Centre on Aging and Mobility, University of Zurich and City Hospital, Zurich, Switzerland
| | - E Biver
- Division of Bone Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - O Bruyère
- WHO Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Division of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
| | - J A Cauley
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, Philadelphia, USA
| | - J R Center
- Skeletal Diseases Program, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St Vincent's Clinical School, School of Medicine and Health, University of New South Wales Sydney, Sydney, NSW, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney, NSW, Australia
| | - R Chapurlat
- INSERM UMR 1033, Université Claude Bernard-Lyon1, Hôpital Edouard Herriot, Lyon, France
| | | | - C Cooper
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospitals Southampton NHS Foundation Trust, Southampton, UK
- NIHR Oxford Biomedical Research Unit, University of Oxford, Oxford, UK
| | - C J Crandall
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - S R Cummings
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - J A P da Silva
- Coimbra Institute for Clinical and Biomedical Research, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Rheumatology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - B Dawson-Hughes
- Bone Metabolism Laboratory, Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA
| | - A Diez-Perez
- Department of Internal Medicine, Hospital del Mar and CIBERFES, Autonomous University of Barcelona, Barcelona, Spain
| | - A B Dufour
- Marcus Institute for Aging Research, Hebrew Senior Life, Boston, MA, USA
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - J A Eisman
- Skeletal Diseases Program, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St Vincent's Clinical School, School of Medicine and Health, University of New South Wales Sydney, Sydney, NSW, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney, NSW, Australia
| | - P J M Elders
- Petra JM Elders Department of General Practice, Amsterdam UMC, location AMC, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - S Ferrari
- Division of Bone Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Y Fujita
- Center for Medical Education and Clinical Training, Kindai University Faculty of Medicine, Osaka, Japan
| | - S Fujiwara
- Department of Pharmacy, Yasuda Women's University, Hiroshima, Japan
| | - C-C Glüer
- Section Biomedical Imaging, Molecular Imaging North Competence Center, Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein Kiel, Kiel University, Kiel, Germany
| | - I Goldshtein
- Maccabitech Institute of Research and Innovation, Maccabi Healthcare Services, Tel Aviv, Israel
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - D Goltzman
- Department of Medicine, McGill University and McGill University Health Centre, Montreal, Canada
| | - V Gudnason
- Icelandic Heart Association, Kopavogur, Iceland
- University of Iceland, Reykjavik, Iceland
| | - J Hall
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh, UK
| | - D Hans
- Interdisciplinary Centre of Bone Diseases, Bone and Joint Department, Lausanne University Hospital (CHUV) & University of Lausanne, Lausanne, Switzerland
| | - M Hoff
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Rheumatology, St Olavs Hospital, Trondheim, Norway
| | - R J Hollick
- Aberdeen Centre for Arthritis and Musculoskeletal Health, Epidemiology Group, University of Aberdeen, Aberdeen, UK
| | - M Huisman
- Department of Epidemiology and Data Science, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
- Department of Sociology, VU University, Amsterdam, The Netherlands
| | - M Iki
- Department of Public Health, Kindai University Faculty of Medicine, Osaka, Japan
| | - S Ish-Shalom
- Endocrine Clinic, Elisha Hospital, Haifa, Israel
| | - G Jones
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - M K Karlsson
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Orthopedics, Skåne University Hospital, Malmö, Sweden
| | - S Khosla
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - D P Kiel
- Marcus Institute for Aging Research, Hebrew Senior Life, Boston, MA, USA
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - W-P Koh
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Institute for Clinical Sciences, Agency for Science Technology and Research (A*STAR), Singapore, Singapore
| | - F Koromani
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M A Kotowicz
- IMPACT (Institute for Mental and Physical Health and Clinical Translation), Deakin University, Geelong, Victoria, Australia
- Barwon Health, Geelong, Victoria, Australia
- Department of Medicine -Western Health, The University of Melbourne, St Albans, Victoria, Australia
| | - H Kröger
- Department of Orthopedics and Traumatology, Kuopio University Hospital, Kuopio, Finland
- Kuopio Musculoskeletal Research Unit, University of Eastern Finland, Kuopio, Finland
| | - T Kwok
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Jockey Club Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - O Lamy
- Centre of Bone Diseases, Lausanne University Hospital, Lausanne, Switzerland
- Service of Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - A Langhammer
- HUNT Research Centre, Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - B Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - K Lippuner
- Department of Osteoporosis, Bern University Hospital, University of Bern, Bern, Switzerland
| | - D Mellström
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Sahlgrenska University Hospital Mölndal, Mölndal, Sweden
| | - T Merlijn
- Department of General Practice, Amsterdam UMC, location AMC, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - A Nordström
- School of Sport Sciences, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Health Sciences, Swedish Winter Sports Research Centre, Mid Sweden University, Östersund, Sweden
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - P Nordström
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - T W O'Neill
- National Institute for Health Research Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
- Centre for Epidemiology Versus Arthritis, University of Manchester, Manchester, UK
| | - B Obermayer-Pietsch
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University Graz, Graz, Austria
- Center for Biomarker Research in Medicine, Graz, Austria
| | - C Ohlsson
- Sahlgrenska Osteoporosis Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - E S Orwoll
- Department of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - J A Pasco
- IMPACT (Institute for Mental and Physical Health and Clinical Translation), Deakin University, Geelong, Victoria, Australia
- Barwon Health, Geelong, Victoria, Australia
- Department of Medicine -Western Health, The University of Melbourne, St Albans, Victoria, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - F Rivadeneira
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - A-M Schott
- Université Claude Bernard Lyon 1, U INSERM 1290 RESHAPE, Lyon, France
| | - E J Shiroma
- Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Baltimore, MD, USA
| | - K Siggeirsdottir
- Icelandic Heart Association, Kopavogur, Iceland
- Janus Rehabilitation, Reykjavik, Iceland
| | - E M Simonsick
- Translational Gerontology Branch, National Institute on Aging Intramural Research Program, Baltimore, MD, USA
| | - E Sornay-Rendu
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Lyon, France
| | - R Sund
- Kuopio Musculoskeletal Research Unit, University of Eastern Finland, Kuopio, Finland
| | - K M A Swart
- Petra JM Elders Department of General Practice, Amsterdam UMC, location AMC, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
- PHARMO Institute for Drug Outcomes Research, Utrecht, The Netherlands
| | - P Szulc
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Lyon, France
| | - J Tamaki
- Department of Hygiene and Public Health, Faculty of Medicine, Educational Foundation of Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - D J Torgerson
- York Trials Unit, Department of Health Sciences, University of York, York, UK
| | - N M van Schoor
- Department of Epidemiology and Data Science, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - T P van Staa
- Centre for Health Informatics, Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester, UK
| | - J Vila
- Statistics Support Unit, Hospital del Mar Medical Research Institute, CIBER Epidemiology and Public Health (CIBERESP), Barcelona, Spain
| | - N J Wareham
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - N C Wright
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - N Yoshimura
- Department of Preventive Medicine for Locomotive Organ Disorders, The University of Tokyo Hospital, Tokyo, Japan
| | - M C Zillikens
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Zwart
- PRECIOSA-Fundación para la investigación, Barberà del Vallés, Barcelona, Spain
- Health Center Can Gibert del Plà, Catalan Institute of Health, Girona, Spain
- Department of Medical Sciences, University of Girona, Girona, Spain
- GROIMAP/GROICAP (research groups), Unitat de Suport a la Recerca Girona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol, Girona, Spain
| | - L Vandenput
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Sahlgrenska Osteoporosis Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - N C Harvey
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospitals Southampton NHS Foundation Trust, Southampton, UK
| | - M Lorentzon
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Sahlgrenska Osteoporosis Centre, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - W D Leslie
- Department of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| |
Collapse
|
5
|
Kojima K, Morimoto K, Juma KM, Takita T, Saito K, Yanagihara I, Fujiwara S, Yasukawa K. Application of recombinant human pyruvate kinase in recombinase polymerase amplification. J Biosci Bioeng 2023; 136:341-346. [PMID: 37718149 DOI: 10.1016/j.jbiosc.2023.08.005] [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: 06/06/2023] [Revised: 08/01/2023] [Accepted: 08/26/2023] [Indexed: 09/19/2023]
Abstract
Recombinase polymerase amplification (RPA) is an isothermal DNA amplification reaction at around 41°C using recombinase (Rec), single-stranded DNA-binding protein (SSB), strand-displacing DNA polymerase (Pol), and an ATP-regenerating enzyme. In this study, we attempted to use pyruvate kinase instead of creatine kinase (CK) that has been consistently used as an ATP-regenerating enzyme in RPA. Human pyruvate kinase M1 (PKM) was expressed in Escherichia coli and purified from the cells. RPA with PKM was performed at 41°C with the in vitro synthesized urease subunit β (ureB) DNA from Ureaplasma parvum serovar 3 as a standard DNA. The optimal concentrations of PKM and phosphoenolpyruvate were 20 ng/μL and 10 mM, respectively. The RPA reaction with PKM was more sensitive than that with CK. PKM exhibited higher thermostability than CK, suggesting that the RPA reagents with PKM are preferable to those with CK for onsite use.
Collapse
Affiliation(s)
- Kenji Kojima
- Division of Bioanalytical Chemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo 670-8524, Japan
| | - Kenta Morimoto
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kazuki Saito
- Division of Bioanalytical Chemistry, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo 670-8524, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-shi, Osaka 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| |
Collapse
|
6
|
Yasukawa M, Yamashita T, Yamanaka T, Fujiwara S, Okamoto S, Takahashi A, Isoda M. P156 Usefulness of pretreatment 1CTP levels as prognosis prediction. Breast 2023. [DOI: 10.1016/s0960-9776(23)00273-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
|
7
|
Juma KM, Inoue E, Asada K, Fukuda W, Morimoto K, Yamagata M, Takita T, Kojima K, Suzuki K, Nakura Y, Yanagihara I, Fujiwara S, Yasukawa K. Recombinase polymerase amplification using novel thermostable strand-displacing DNA polymerases from Aeribacillus pallidus and Geobacillus zalihae. J Biosci Bioeng 2023; 135:282-290. [PMID: 36806411 DOI: 10.1016/j.jbiosc.2023.01.009] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 02/19/2023]
Abstract
Recombinase polymerase amplification (RPA) is an isothermal DNA amplification reaction at around 41 °C using recombinase (Rec), single-stranded DNA-binding protein (SSB), and strand-displacing DNA polymerase (Pol). Component instability and the need to store commercial kits in a deep freezer until use are some limitations of RPA. In a previous study, Bacillus stearothermophilus Pol (Bst-Pol) was used as a thermostable strand-displacing DNA polymerase in RPA. Here, we attempted to optimize the lyophilization conditions for RPA with newly isolated thermostable DNA polymerases for storage at room temperature. We isolated novel two thermostable strand-displacing DNA polymerases, one from a thermophilic bacterium Aeribacillus pallidus (H1) and the other from Geobacillus zalihae (C1), and evaluated their performances in RPA reaction. Urease subunit β (UreB) DNA from Ureaplasma parvum serovar 3 was used as a model target for evaluation. The RPA reaction with H1-Pol or C1-Pol was performed at 41 °C with the in vitro synthesized standard UreB DNA. The minimal initial copy numbers of standard DNA from which the amplified products were observed were 600, 600, and 6000 copies for RPA with H1-Pol, C1-Pol, and Bst-Pol, respectively. Optimization was carried out using RPA components, showing that the lyophilized RPA reagents containing H1-Pol exhibited the same performance as the corresponding liquid RPA reagents. In addition, lyophilized RPA reagents with H1-Pol showed almost the same activity after two weeks of storage at room temperature as the freshly prepared liquid RPA reagents. These results suggest that lyophilized RPA reagents with H1-Pol are preferable to liquid RPA reagents for onsite use.
Collapse
Affiliation(s)
- Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Eisuke Inoue
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan
| | - Kengo Asada
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan
| | - Wakao Fukuda
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan
| | - Kenta Morimoto
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Masaya Yamagata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kenji Kojima
- Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo 670-8524, Japan
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka 565-0871, Japan
| | - Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-shi, Osaka 594-1101, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-shi, Osaka 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo 669-1330, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
| |
Collapse
|
8
|
Vandenput L, Johansson H, McCloskey EV, Liu E, Åkesson KE, Anderson FA, Azagra R, Bager CL, Beaudart C, Bischoff-Ferrari HA, Biver E, Bruyère O, Cauley JA, Center JR, Chapurlat R, Christiansen C, Cooper C, Crandall CJ, Cummings SR, da Silva JAP, Dawson-Hughes B, Diez-Perez A, Dufour AB, Eisman JA, Elders PJM, Ferrari S, Fujita Y, Fujiwara S, Glüer CC, Goldshtein I, Goltzman D, Gudnason V, Hall J, Hans D, Hoff M, Hollick RJ, Huisman M, Iki M, Ish-Shalom S, Jones G, Karlsson MK, Khosla S, Kiel DP, Koh WP, Koromani F, Kotowicz MA, Kröger H, Kwok T, Lamy O, Langhammer A, Larijani B, Lippuner K, Mellström D, Merlijn T, Nordström A, Nordström P, O'Neill TW, Obermayer-Pietsch B, Ohlsson C, Orwoll ES, Pasco JA, Rivadeneira F, Schei B, Schott AM, Shiroma EJ, Siggeirsdottir K, Simonsick EM, Sornay-Rendu E, Sund R, Swart KMA, Szulc P, Tamaki J, Torgerson DJ, van Schoor NM, van Staa TP, Vila J, Wareham NJ, Wright NC, Yoshimura N, Zillikens MC, Zwart M, Harvey NC, Lorentzon M, Leslie WD, Kanis JA. Update of the fracture risk prediction tool FRAX: a systematic review of potential cohorts and analysis plan. Osteoporos Int 2022; 33:2103-2136. [PMID: 35639106 DOI: 10.1007/s00198-022-06435-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/18/2022] [Indexed: 12/15/2022]
Abstract
UNLABELLED We describe the collection of cohorts together with the analysis plan for an update of the fracture risk prediction tool FRAX with respect to current and novel risk factors. The resource comprises 2,138,428 participants with a follow-up of approximately 20 million person-years and 116,117 documented incident major osteoporotic fractures. INTRODUCTION The availability of the fracture risk assessment tool FRAX® has substantially enhanced the targeting of treatment to those at high risk of fracture with FRAX now incorporated into more than 100 clinical osteoporosis guidelines worldwide. The aim of this study is to determine whether the current algorithms can be further optimised with respect to current and novel risk factors. METHODS A computerised literature search was performed in PubMed from inception until May 17, 2019, to identify eligible cohorts for updating the FRAX coefficients. Additionally, we searched the abstracts of conference proceedings of the American Society for Bone and Mineral Research, European Calcified Tissue Society and World Congress of Osteoporosis. Prospective cohort studies with data on baseline clinical risk factors and incident fractures were eligible. RESULTS Of the 836 records retrieved, 53 were selected for full-text assessment after screening on title and abstract. Twelve cohorts were deemed eligible and of these, 4 novel cohorts were identified. These cohorts, together with 60 previously identified cohorts, will provide the resource for constructing an updated version of FRAX comprising 2,138,428 participants with a follow-up of approximately 20 million person-years and 116,117 documented incident major osteoporotic fractures. For each known and candidate risk factor, multivariate hazard functions for hip fracture, major osteoporotic fracture and death will be tested using extended Poisson regression. Sex- and/or ethnicity-specific differences in the weights of the risk factors will be investigated. After meta-analyses of the cohort-specific beta coefficients for each risk factor, models comprising 10-year probability of hip and major osteoporotic fracture, with or without femoral neck bone mineral density, will be computed. CONCLUSIONS These assembled cohorts and described models will provide the framework for an updated FRAX tool enabling enhanced assessment of fracture risk (PROSPERO (CRD42021227266)).
Collapse
Affiliation(s)
- L Vandenput
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Sahlgrenska Osteoporosis Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - H Johansson
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, UK
| | - E V McCloskey
- Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, UK
- MRC Versus Arthritis Centre for Integrated Research in Musculoskeletal Ageing, Mellanby Centre for Musculoskeletal Research, University of Sheffield, Sheffield, UK
| | - E Liu
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
| | - K E Åkesson
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Orthopedics, Skåne University Hospital, Malmö, Sweden
| | - F A Anderson
- GLOW Coordinating Center, Center for Outcomes Research, University of Massachusetts Medical School, Worcester, MA, USA
| | - R Azagra
- Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain
- Health Center Badia del Valles, Catalan Institute of Health, Barcelona, Spain
- GROIMAP (Research Group), Unitat de Suport a La Recerca Metropolitana Nord, Institut Universitari d'Investigació en Atenció Primària Jordi Gol, Santa Coloma de Gramenet, Barcelona, Spain
| | - C L Bager
- Nordic Bioscience A/S, Herlev, Denmark
| | - C Beaudart
- WHO Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Division of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
| | - H A Bischoff-Ferrari
- Department of Aging Medicine and Aging Research, University Hospital, Zurich, and University of Zurich, Zurich, Switzerland
- Centre On Aging and Mobility, University of Zurich and City Hospital, Zurich, Switzerland
| | - E Biver
- Division of Bone Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - O Bruyère
- WHO Collaborating Centre for Public Health Aspects of Musculoskeletal Health and Aging, Division of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Belgium
| | - J A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Philadelphia, USA
| | - J R Center
- Bone Biology, Healthy Ageing Theme, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St Vincent's Clinical School, Faculty of Medicine, University of New South Wales Sydney, Sydney, NSW, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney, NSW, Australia
| | - R Chapurlat
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Lyon, France
| | | | - C Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
- National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton and University Hospitals Southampton NHS Foundation Trust, Southampton, UK
- National Institute for Health Research Oxford Biomedical Research Unit, , University of Oxford, Oxford, UK
| | - C J Crandall
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - S R Cummings
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - J A P da Silva
- Coimbra Institute for Clinical and Biomedical Research, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Rheumatology Department, University Hospital and University of Coimbra, Coimbra, Portugal
| | - B Dawson-Hughes
- Bone Metabolism Laboratory, Jean Mayer US Department of Agriculture Human Nutrition Research Center On Aging, Tufts University, Boston, MA, USA
| | - A Diez-Perez
- Department of Internal Medicine, Hospital del Mar and CIBERFES, Autonomous University of Barcelona, Barcelona, Spain
| | - A B Dufour
- Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, MA, USA
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - J A Eisman
- St Vincent's Clinical School, Faculty of Medicine, University of New South Wales Sydney, Sydney, NSW, Australia
- School of Medicine Sydney, University of Notre Dame Australia, Sydney, NSW, Australia
- Osteoporosis and Bone Biology Division, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - P J M Elders
- Department of General Practice, Amsterdam UMC, Location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - S Ferrari
- Division of Bone Diseases, Department of Medicine, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Y Fujita
- Department of Public Health, Faculty of Medicine, Kindai University, Osaka, Japan
| | - S Fujiwara
- Department of Pharmacy, Yasuda Women's University, Hiroshima, Japan
| | - C-C Glüer
- Section Biomedical Imaging, Molecular Imaging North Competence Center, Department of Radiology and Neuroradiology, University Medical Center Schleswig-Holstein Kiel, Kiel University, Kiel, Germany
| | - I Goldshtein
- Maccabitech Institute of Research and Innovation, Maccabi Healthcare Services, Tel Aviv, Israel
- Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - D Goltzman
- Department of Medicine, McGill University and McGill University Health Centre, Montreal, Canada
| | - V Gudnason
- Icelandic Heart Association, Kopavogur, Iceland
- University of Iceland, Reykjavik, Iceland
| | - J Hall
- MRC Centre for Reproductive Health, University of Edinburgh, Edinburgh, UK
| | - D Hans
- Centre of Bone Diseases, Bone and Joint Department, Lausanne University Hospital, Lausanne, Switzerland
| | - M Hoff
- Department of Neuromedicine and Movement Science, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Rheumatology, St Olavs Hospital, Trondheim, Norway
| | - R J Hollick
- Aberdeen Centre for Arthritis and Musculoskeletal Health, Epidemiology Group, University of Aberdeen, Aberdeen, UK
| | - M Huisman
- Department of Epidemiology and Data Science, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
- Department of Sociology, VU University, Amsterdam, The Netherlands
| | - M Iki
- Department of Public Health, Faculty of Medicine, Kindai University, Osaka, Japan
| | - S Ish-Shalom
- Endocrine Clinic, Elisha Hospital, Haifa, Israel
| | - G Jones
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - M K Karlsson
- Clinical and Molecular Osteoporosis Research Unit, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Orthopaedics, Skåne University Hospital, Malmö, Sweden
| | - S Khosla
- Robert and Arlene Kogod Center On Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, MN, USA
| | - D P Kiel
- Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, MA, USA
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - W-P Koh
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Singapore Institute for Clinical Sciences, Agency for Science Technology and Research (A*STAR), Singapore, Singapore
| | - F Koromani
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M A Kotowicz
- IMPACT (Institute for Mental and Physical Health and Clinical Translation), Deakin University, Geelong, VIC, Australia
- Barwon Health, Geelong, VIC, Australia
- Department of Medicine - Western Health, The University of Melbourne, St Albans, Victoria, Australia
| | - H Kröger
- Department of Orthopedics and Traumatology, Kuopio University Hospital, Kuopio, Finland
- Kuopio Musculoskeletal Research Unit, University of Eastern Finland, Kuopio, Finland
| | - T Kwok
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong
- Jockey Club Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - O Lamy
- Centre of Bone Diseases, Lausanne University Hospital, Lausanne, Switzerland
- Service of Internal Medicine, Lausanne University Hospital, Lausanne, Switzerland
| | - A Langhammer
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, HUNT Research Centre, Norwegian University of Science and Technology, Trondheim, Norway
| | - B Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - K Lippuner
- Department of Osteoporosis, Bern University Hospital, University of Bern, Bern, Switzerland
| | - D Mellström
- Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Sahlgrenska University Hospital Mölndal, Mölndal, Sweden
| | - T Merlijn
- Department of General Practice, Amsterdam UMC, Location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - A Nordström
- Division of Sustainable Health, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
- School of Sport Sciences, Arctic University of Norway, Tromsø, Norway
| | - P Nordström
- Unit of Geriatric Medicine, Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
| | - T W O'Neill
- National Institute for Health Research Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
- Centre for Epidemiology Versus Arthritis, University of Manchester, Manchester, UK
| | - B Obermayer-Pietsch
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University Graz, Graz, Austria
- Center for Biomarker Research in Medicine, Graz, Austria
| | - C Ohlsson
- Sahlgrenska Osteoporosis Centre, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - E S Orwoll
- Department of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - J A Pasco
- Institute for Physical and Mental Health and Clinical Translation (IMPACT), Deakin University, Geelong, Australia
- Department of Medicine-Western Health, The University of Melbourne, St Albans, Australia
- Barwon Health, Geelong, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia
| | - F Rivadeneira
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - B Schei
- Department of Public Health and Nursing, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Gynecology, St Olavs Hospital, Trondheim, Norway
| | - A-M Schott
- Université Claude Bernard Lyon 1, U INSERM 1290 RESHAPE, Lyon, France
| | - E J Shiroma
- Laboratory of Epidemiology and Population Sciences, National Institute On Aging, Baltimore, MD, USA
| | - K Siggeirsdottir
- Icelandic Heart Association, Kopavogur, Iceland
- Janus Rehabilitation, Reykjavik, Iceland
| | - E M Simonsick
- Translational Gerontology Branch, National Institute On Aging Intramural Research Program, Baltimore, MD, USA
| | | | - R Sund
- Kuopio Musculoskeletal Research Unit, University of Eastern Finland, Kuopio, Finland
| | - K M A Swart
- Department of General Practice, Amsterdam UMC, Location VUmc, Amsterdam Public Health Research Institute, Amsterdam, The Netherlands
| | - P Szulc
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Lyon, France
| | - J Tamaki
- Department of Hygiene and Public Health, Faculty of Medicine, Educational Foundation of Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - D J Torgerson
- York Trials Unit, Department of Health Sciences, University of York, York, UK
| | - N M van Schoor
- Department of Epidemiology and Data Science, Amsterdam Public Health Research Institute, VU University Medical Center, Amsterdam, The Netherlands
| | - T P van Staa
- Centre for Health Informatics, Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester, UK
| | - J Vila
- Statistics Support Unit, Hospital del Mar Medical Research Institute, CIBER Epidemiology and Public Health (CIBERESP), Barcelona, Spain
| | - N J Wareham
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - N C Wright
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - N Yoshimura
- Department of Preventive Medicine for Locomotive Organ Disorders, The University of Tokyo Hospital, Tokyo, Japan
| | - M C Zillikens
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - M Zwart
- Health Center Can Gibert del Plà, Catalan Institute of Health, Girona, Spain
- Department of Medical Sciences, University of Girona, Girona, Spain
- GROIMAP (Research Group), Institut Universitari d'Investigació en Atenció Primària Jordi Gol, Barcelona, Spain
| | - N C Harvey
- MRC Lifecourse Epidemiology Centre, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - M Lorentzon
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
- Sahlgrenska Osteoporosis Centre, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Region Västra Götaland, Sahlgrenska University Hospital, Mölndal, Sweden
| | - W D Leslie
- Department of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - J A Kanis
- Mary McKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia.
- Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, UK.
- Centre for Metabolic Bone Diseases, University of Sheffield Medical School, Sheffield, UK.
| |
Collapse
|
9
|
Yoshida H, Motohashi T, De Bus L, De Waele J, Takaba A, Kuriyama A, Kobayashi A, Tanaka C, Hashi H, Hashimoto H, Nashiki H, Shibata M, Kanamoto M, Inoue M, Hashimoto S, Katayama S, Fujiwara S, Kameda S, Shindo S, Suzuki T, Komuro T, Kawagishi T, Kawano Y, Fujita Y, Kida Y, Hara Y, Fujitani S. Use of broad-spectrum antimicrobials for more than 72 h and the detection of multidrug-resistant bacteria in Japanese intensive care units: a multicenter retrospective cohort study. Antimicrob Resist Infect Control 2022; 11:119. [PMID: 36175948 PMCID: PMC9520832 DOI: 10.1186/s13756-022-01146-3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Large multicenter studies reporting on the association between the duration of broad-spectrum antimicrobial administration and the detection of multidrug-resistant (MDR) bacteria in the intensive care unit (ICU) are scarce. We evaluated the impact of broad-spectrum antimicrobial therapy for more than 72 h on the detection of MDR bacteria using the data from Japanese patients enrolled in the DIANA study.
Methods
We analyzed the data of ICU patients in the DIANA study (a multicenter international observational cohort study from Japan). Patients who received empirical antimicrobials were divided into a broad-spectrum antimicrobial group and a narrow-spectrum antimicrobial group, based on whether they received broad-spectrum antimicrobials for more or less than 72 h, respectively. Differences in patient characteristics, background of infectious diseases and empirical antimicrobial administration, and outcomes between the two groups were compared using the chi-square tests (Monte Carlo method) for categorical variables and the Mann–Whitney U-test for continuous variables. We also conducted a logistic regression analysis to investigate the factors associated with the detection of new MDR bacteria.
Results
A total of 254 patients from 31 Japanese ICUs were included in the analysis, of whom 159 (62.6%) were included in the broad-spectrum antimicrobial group and 95 (37.4%) were included in the narrow-spectrum antimicrobial group. The detection of new MDR bacteria was significantly higher in the broad-spectrum antimicrobial group (11.9% vs. 4.2%, p = 0.042). Logistic regression showed that broad-spectrum antimicrobial continuation for more than 72 h (OR [odds ratio] 3.09, p = 0.047) and cerebrovascular comorbidity on ICU admission (OR 2.91, p = 0.041) were associated with the detection of new MDR bacteria.
Conclusions
Among Japanese ICU patients treated with empirical antimicrobials, broad-spectrum antimicrobial usage for more than 72 h was associated with the increased detection of new MDR bacteria. Antimicrobial stewardship programs in ICUs should discourage the prolonged use of empirical broad-spectrum antimicrobial therapy.
Trial registration ClinicalTrials.gov, NCT02920463, Registered 30 September 2016, https://clinicaltrials.gov/ct2/show/NCT02920463
Collapse
|
10
|
Sato Y, Fujiwara S, Hata A, Kida Y, Masuda T, Amimoto H, Matsumoto H, Miyoshi K, Otsuka K, Tomii K. 1545P A multicenter prospective observational study of pre-existing autoantibodies in patients with small cell lung cancer treated with ICI. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1639] [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: 11/01/2022] Open
|
11
|
Tsutsui S, Matsuda T, Takeda K, Sasaki M, Kubo Y, Setta K, Fujiwara S, Chida K, Ogasawara K. Assessment of Heating on Titanium Alloy Cerebral Aneurysm Clips during 7T MRI. AJNR Am J Neuroradiol 2022; 43:972-977. [PMID: 35738672 DOI: 10.3174/ajnr.a7561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/06/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND PURPOSE Patients with cerebral aneurysms often undergo MR imaging after microsurgical clipping. Ultra-high-field MR imaging at 7T may provide high diagnostic capability in such clinical situations. However, titanium alloy clips have safety issues such as adverse interactions with static magnetic fields and radiofrequency-induced heating during 7T MR imaging. The purpose of this study was to quantitatively assess temperature increases on various types of titanium alloy aneurysm clips during 7T MR imaging. MATERIALS AND METHODS Five types of titanium alloy aneurysm clips were tested, including combinations of short, long, straight, angled, and fenestrated types. Each clip was set in a phantom filled with gelled saline mixed with polyacrylic acid and underwent 7T MR imaging with 3D T1WI with a spoiled gradient recalled acquisition in the steady-state technique. Temperature was chronologically measured at the tips of the clip blade and head, angled part of the clip, and 5 mm from the tip of the clip head using MR imaging-compatible fiber-optic thermometers. RESULTS Temperature increases at all locations for right-angled and short straight clips were <1°C. Temperature increases at the angled part for the 45° angled clip and the tip of the clip head for the straight fenestrated clip were >1°C. Temperature increases at all locations for the long straight clip were >2°C. CONCLUSIONS Temperature increases on the right-angled and short straight clips remained below the regulatory limit during 7T MR imaging, but temperature increases on the 45° angled, straight fenestrated, and long straight clips exceeded this limit.
Collapse
Affiliation(s)
- S Tsutsui
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| | - T Matsuda
- Division of Ultrahigh Field MRI (T.M., K.T., M.S.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - K Takeda
- Division of Ultrahigh Field MRI (T.M., K.T., M.S.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - M Sasaki
- Division of Ultrahigh Field MRI (T.M., K.T., M.S.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - Y Kubo
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| | - K Setta
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| | - S Fujiwara
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| | - K Chida
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| | - K Ogasawara
- From the Department of Neurosurgery (S.T., Y.K., K.S., S.F., K.C., K.O.)
| |
Collapse
|
12
|
Juma KM, Takita T, Yamagata M, Ishitani M, Hayashi K, Kojima K, Suzuki K, Ando Y, Fukuda W, Fujiwara S, Nakura Y, Yanagihara I, Yasukawa K. Modified uvsY by N-terminal hexahistidine tag addition enhances efficiency of recombinase polymerase amplification to detect SARS-CoV-2 DNA. Mol Biol Rep 2022; 49:2847-2856. [PMID: 35098395 PMCID: PMC8801280 DOI: 10.1007/s11033-021-07098-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/16/2021] [Indexed: 11/28/2022]
Abstract
Background Methods Results Conclusions Supplementary Information
Collapse
Affiliation(s)
- Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Masaya Yamagata
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Mika Ishitani
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Kaichi Hayashi
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
| | - Kenji Kojima
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan
- Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji, Hyogo, 670-8524, Japan
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yuri Ando
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo, 669‑1337, Japan
| | - Wakao Fukuda
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo, 669‑1337, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda, Hyogo, 669‑1337, Japan
| | - Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-shi, Osaka, 594-1101, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi-shi, Osaka, 594-1101, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto, 606-8502, Japan.
| |
Collapse
|
13
|
Haga T, Masuyama T, Hayashi Y, Atsumi T, Ishii K, Fujiwara S. Characteristics of In-Hospital Patients with Congenital Heart Disease Requiring Rapid Response System Activations: A Japanese Database Study. CONGENIT HEART DIS 2022. [DOI: 10.32604/chd.2022.017407] [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: 11/15/2022]
|
14
|
Takenaka T, Matsuzaki M, Fujiwara S, Hayashida M, Suyama H, Kawamoto M. Myeloperoxidase anti-neutrophil cytoplasmic antibody positive optic perineuritis after mRNA coronavirus disease-19 vaccine. QJM 2021; 114:737-738. [PMID: 34432055 PMCID: PMC8499787 DOI: 10.1093/qjmed/hcab227] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Indexed: 11/15/2022] Open
Affiliation(s)
- T Takenaka
- From the Department of Neurology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - M Matsuzaki
- Department of Ophthalmology, Kobe City Eye Hospital, Kobe, Hyogo, Japan
- Department of Ophthalmology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - S Fujiwara
- From the Department of Neurology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
- Address correspondence to Satoru Fujiwara, Department of Neurology, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
| | - M Hayashida
- Department of Ophthalmology, Kobe City Eye Hospital, Kobe, Hyogo, Japan
- Department of Ophthalmology, Kobe City Medical Center General Hospital, Kobe, Hyogo, Japan
| | - H Suyama
- Department of Ophthalmology, Suyama Eye Clinic, Kobe, Hyogo 655-0047, Japan
| | | |
Collapse
|
15
|
Fujiwara S, Yoshimura H, Kawamoto M. Isolated anhidrosis of an upper limb in a patient with lung cancer: 'one-sleeve shirt sign'. QJM 2021; 114:527-528. [PMID: 33752233 DOI: 10.1093/qjmed/hcab062] [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)
- S Fujiwara
- Department of Neurology, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 650-0047, Japan
| | - H Yoshimura
- Department of Neurology, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 650-0047, Japan
| | - M Kawamoto
- Department of Neurology, Kobe City Medical Center General Hospital, 2-1-1 Minatojima-Minamimachi, Chuo-Ku, Kobe, Hyogo 650-0047, Japan
| |
Collapse
|
16
|
Biyani R, Sharma K, Kojima K, Biyani M, Sharma V, Kumawat T, Juma KM, Yanagihara I, Fujiwara S, Kodama E, Takamura Y, Takagi M, Yasukawa K, Biyani M. Development of robust isothermal RNA amplification assay for lab-free testing of RNA viruses. Sci Rep 2021; 11:15997. [PMID: 34362977 PMCID: PMC8346491 DOI: 10.1038/s41598-021-95411-x] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/26/2021] [Indexed: 11/30/2022] Open
Abstract
Simple tests of infectiousness that return results in minutes and directly from samples even with low viral loads could be a potential game-changer in the fight against COVID-19. Here, we describe an improved isothermal nucleic acid amplification assay, termed the RICCA (RNA Isothermal Co-assisted and Coupled Amplification) reaction, that consists of a simple one-pot format of ‘sample-in and result-out’ with a primary focus on the detection of low copy numbers of RNA virus directly from saliva without the need for laboratory processing. We demonstrate our assay by detecting 16S rRNA directly from E. coli cells with a sensitivity as low as 8 CFU/μL and RNA fragments from a synthetic template of SARS-CoV-2 with a sensitivity as low as 1740 copies/μL. We further demonstrate the applicability of our assay for real-time testing at the point of care by designing a closed format for paper-based lateral flow assay and detecting heat-inactivated SARS-COV-2 virus in human saliva at concentrations ranging from 28,000 to 2.8 copies/μL with a total assay time of 15–30 min.
Collapse
Affiliation(s)
- Radhika Biyani
- Department of Bioscience and Biotechnology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa, 923-1292, Japan
| | - Kirti Sharma
- BioSeeds Corporation, JAIST Venture Business Laboratory, Ishikawa Create Labo, Asahidai 2-13, Nomi City, Ishikawa, 923-1211, Japan
| | - Kenji Kojima
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Madhu Biyani
- BioSeeds Corporation, JAIST Venture Business Laboratory, Ishikawa Create Labo, Asahidai 2-13, Nomi City, Ishikawa, 923-1211, Japan.,Biyani BioSolutions Pvt. Ltd., Biyani Group of Colleges Venture Business Laboratory, R-4, Sector 3, Vidhyadhar Nagar, Jaipur, 302039, India
| | - Vishnu Sharma
- Biyani BioSolutions Pvt. Ltd., Biyani Group of Colleges Venture Business Laboratory, R-4, Sector 3, Vidhyadhar Nagar, Jaipur, 302039, India
| | - Tarun Kumawat
- Biyani BioSolutions Pvt. Ltd., Biyani Group of Colleges Venture Business Laboratory, R-4, Sector 3, Vidhyadhar Nagar, Jaipur, 302039, India
| | - Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, 840 Murodocho, Izumi, Osaka, 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan
| | - Eiichi Kodama
- Division of Infectious Diseases, International Research Institute of Disaster Science, Tohoku University, 2-1 Seiryocho Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Yuzuru Takamura
- Department of Bioscience and Biotechnology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa, 923-1292, Japan
| | - Masahiro Takagi
- Department of Bioscience and Biotechnology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa, 923-1292, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-8502, Japan
| | - Manish Biyani
- Department of Bioscience and Biotechnology, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi City, Ishikawa, 923-1292, Japan. .,BioSeeds Corporation, JAIST Venture Business Laboratory, Ishikawa Create Labo, Asahidai 2-13, Nomi City, Ishikawa, 923-1211, Japan. .,Biyani BioSolutions Pvt. Ltd., Biyani Group of Colleges Venture Business Laboratory, R-4, Sector 3, Vidhyadhar Nagar, Jaipur, 302039, India.
| |
Collapse
|
17
|
Nakura Y, Wu HN, Okamoto Y, Takeuchi M, Suzuki K, Tamura Y, Oba Y, Nishiumi F, Hatori N, Fujiwara S, Yasukawa K, Ida S, Yanagihara I. Development of an efficient one-step real-time reverse transcription polymerase chain reaction method for severe acute respiratory syndrome-coronavirus-2 detection. PLoS One 2021; 16:e0252789. [PMID: 34086827 PMCID: PMC8177496 DOI: 10.1371/journal.pone.0252789] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/21/2021] [Indexed: 11/30/2022] Open
Abstract
The general methods to detect the RNA of severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) in clinical diagnostic testing involve reverse transcriptases and thermostable DNA polymerases. In this study, we compared the detection of SARS-CoV-2 by a one-step real-time RT-PCR method using a heat-resistant reverse transcriptase variant MM4 from Moloney murine leukemia virus, two thermostable DNA polymerase variants with reverse transcriptase activity from Thermotoga petrophila K4 and Thermococcus kodakarensis KOD1, or a wild-type DNA polymerase from Thermus thermophilus M1. The highest performance was achieved by combining MM4 with the thermostable DNA polymerase from T. thermophilus M1. These enzymes efficiently amplified specific RNA using uracil-DNA glycosylase (UNG) to remove contamination and human RNase P RNA amplification as an internal control. The standard curve was obtained from 5 to 105 copies of synthetic RNA. The one-step real-time RT-PCR method’s sensitivity and specificity were 99.44% and 100%, respectively (n = 213), compared to those of a commercially available diagnostic kit. Therefore, our method will be useful for the accurate detection and quantification of SARS-CoV-2.
Collapse
Affiliation(s)
- Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Heng Ning Wu
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Yuya Okamoto
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Muneyuki Takeuchi
- Department of Intensive Care Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita-city, Osaka, Japan
| | - Yoshitaka Tamura
- Department of Clinical Laboratory, Osaka Habikino Medical Center, Habikino-city, Osaka, Japan
| | - Yuichiro Oba
- Department of General Medicine, Osaka General Medical Center, Osaka-city, Osaka, Japan
| | - Fumiko Nishiumi
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Nobuaki Hatori
- The Research Foundation for Microbial Diseases of Osaka University, Suita-city, Osaka, Japan
| | - Shinsuke Fujiwara
- Department of Biosciences, School of Biological and Environmental Sciences, Kwansei-Gakuin University, Sanda-city, Hyogo, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto-city, Kyoto, Japan
| | - Shinobu Ida
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
- Department of Laboratory Medicine, Osaka Women’s and Children’s Hospital, Izumi-city, Osaka, Japan
- * E-mail:
| |
Collapse
|
18
|
Setta K, Matsuda T, Sasaki M, Chiba T, Fujiwara S, Kobayashi M, Yoshida K, Kubo Y, Suzuki M, Yoshioka K, Ogasawara K. Diagnostic Accuracy of Screening Arterial Spin-Labeling MRI Using Hadamard Encoding for the Detection of Reduced CBF in Adult Patients with Ischemic Moyamoya Disease. AJNR Am J Neuroradiol 2021; 42:1403-1409. [PMID: 34016589 DOI: 10.3174/ajnr.a7167] [Citation(s) in RCA: 3] [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: 12/28/2020] [Accepted: 03/11/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Adult patients with ischemic Moyamoya disease are advised to undergo selective revascularization surgery based on cerebral hemodynamics. The purpose of this study was to determine the diagnostic accuracy of arterial spin-labeling MR imaging using Hadamard-encoded multiple postlabeling delays for the detection of reduced CBF in such patients. MATERIALS AND METHODS Thirty-seven patients underwent brain perfusion SPECT and pseudocontinuous arterial spin-labeling MR imaging using standard postlabeling delay (1525 ms) and Hadamard-encoded multiple postlabeling delays. For Hadamard-encoded multiple postlabeling delays, based on data obtained from the 7 sub-boluses with combinations of different labeling durations and postlabeling delays, CBF corrected by the arterial transit time was calculated on a voxel-by-voxel basis. Using a 3D stereotaxic template, we automatically placed ROIs in the ipsilateral cerebellar hemisphere and 5 MCA territories in the symptomatic cerebral hemisphere; then, the ratio of the MCA to cerebellar ROI was calculated. RESULTS The area under the receiver operating characteristic curve for detecting reduced SPECT-CBF ratios (<0.686) was significantly greater for the Hadamard-encoded multiple postlabeling delays-CBF ratios (0.885) than for the standard postlabeling delay-CBF ratios (0.786) (P = .001). The sensitivity and negative predictive value for the Hadamard-encoded multiple postlabeling delays-CBF ratios were 100% (95% confidence interval, 100%-100%) and significantly higher than the sensitivity (95% CI, 44%-80%) and negative predictive value (95% CI, 88%-97%) for the standard postlabeling delay-CBF ratio, respectively. CONCLUSIONS ASL MR imaging using Hadamard-encoded multiple postlabeling delays may be applicable as a screening tool because it can detect reduced CBF on brain perfusion SPECT with 100% sensitivity and a 100% negative predictive value in adult patients with ischemic Moyamoya disease.
Collapse
Affiliation(s)
- K Setta
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - T Matsuda
- Division of Ultrahigh Field MRI, Institute for Biomedical Sciences (T.M., M. Sasaki), Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - M Sasaki
- Department of Radiology (M. Suzuki, K. Yoshioka) Institute for Biomedical Sciences (TM, MS), Iwate Medical University School of Medicine, Yahaba-cho, Japan.,Division of Ultrahigh Field MRI, Institute for Biomedical Sciences (T.M., M. Sasaki), Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - T Chiba
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - S Fujiwara
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - M Kobayashi
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - K Yoshida
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan.,Department of Radiology (M. Suzuki, K. Yoshioka) Institute for Biomedical Sciences (TM, MS), Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - Y Kubo
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | | | - K Yoshioka
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan.,Department of Radiology (M. Suzuki, K. Yoshioka) Institute for Biomedical Sciences (TM, MS), Iwate Medical University School of Medicine, Yahaba-cho, Japan
| | - K Ogasawara
- From the Department of Neurosurgery (K.S., T.C., S.F., M.K., K. Yoshida, Y. Kubo, K.O.), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba-cho, Japan
| |
Collapse
|
19
|
Sento Y, Arai M, Yamamori Y, Fujiwara S, Tamashiro M, Kawamoto E, Naito T, Atagi K, Fujitani S, Osaga S, Sobue K. The characteristics, types of intervention, and outcomes of postoperative patients who required rapid response system intervention: a nationwide database analysis. J Anesth 2021; 35:222-231. [PMID: 33523292 PMCID: PMC7969491 DOI: 10.1007/s00540-021-02900-4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 01/08/2021] [Indexed: 11/27/2022]
Abstract
Purpose Improving the safety of general wards is a key to reducing serious adverse events in the postoperative period. We investigated the characteristics, treatment, and outcomes of postoperative patients managed by a rapid response system (RRS) in Japan to improve postoperative management. Methods This retrospective study analyzed cases requiring RRS intervention that were included in the In-Hospital Emergency Registry in Japan. We analyzed data reported by 34 Japanese hospitals between January 2014 and March 2018, mainly focusing on postoperative patients for whom the RRS was activated within 7 days of surgery. Non-postoperative patients, for whom the RRS was activated in all other settings, were used for comparison as necessary. Results There were 609 (12.7%) postoperative patients among the total patients in the registry. The major criteria were staff concerns (30.2%) and low oxygen saturation (29.7%). Hypotension, tachycardia, and inability to contact physicians were observed as triggers significantly more frequently in postoperative patients when compared with non-postoperative patients. Among RRS activations within 7 days of surgery, 68.9% of activations occurred within postoperative day 3. The ordering of tests (46.8%) and fluid bolus (34.6%) were major interventions that were performed significantly more frequently in postoperative patients when compared with non-postoperative patients. The rate of RRS activations resulting in ICU care was 32.8%. The mortality rate at 1 month was 16.2%. Conclusion Approximately, 70% of the RRS activations occurred within postoperative day 3. Circulatory problems were a more frequent cause of RRS activation in the postoperative group than in the non-postoperative group. Supplementary Information The online version contains supplementary material available at 10.1007/s00540-021-02900-4.
Collapse
Affiliation(s)
- Yoshiki Sento
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
| | - Masayasu Arai
- Division of Intensive Care Medicine, Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0373, Japan
| | - Yuji Yamamori
- Department of Emergency and Critical Care Medicine, Shimane Prefectural Central Hospital, 4-1-1 Himebara, Izumo, Shimane, 693-8555, Japan
| | - Shinsuke Fujiwara
- Department of Emergency Medicine, NHO Ureshino Medical Center, 2436 Shimojuku, Ureshino, Saga, 843-0393, Japan
| | - Masahiro Tamashiro
- Department of Intensive Care Medicine, Tomishiro Central Hospital, 25 Ueta, Tomigusuku, Okinawa, 901-0243, Japan
| | - Eiji Kawamoto
- Department of Emergency and Disaster Medicine, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan
| | - Takaki Naito
- Department of Emergency and Critical Care Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan
| | - Kazuaki Atagi
- Intensive Care Unit, Nara Prefecture General Medical Center, 2-897-5 Shichijonishi, Nara, Nara, 630-8581, Japan
| | - Shigeki Fujitani
- Department of Emergency and Critical Care Medicine, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 216-8511, Japan
| | - Satoshi Osaga
- Clinical Research Management Center, Nagoya City University Hospital, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan
| | - Kazuya Sobue
- Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan
| | | |
Collapse
|
20
|
Aoyama T, Tsuneyoshi I, Otake T, Ouchi K, Kawase Y, Arai M, Shibata N, Fujiwara S, Fujitani S. Rapid response system in Japanese outpatient departments based on online registry: Multicentre observational study. Resusc Plus 2021; 5:100065. [PMID: 34223336 PMCID: PMC8244486 DOI: 10.1016/j.resplu.2020.100065] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/11/2020] [Accepted: 12/13/2020] [Indexed: 11/23/2022] Open
Abstract
Aim The rapid response system (RRS) has become well known as a patient safety system to reduce adverse in-patient events, and it is also required to respond to patients in the outpatient department. However, only few studies have reported on the RRS in the outpatient department. We analysed the current status of the RRS in the outpatient department based on a multicentre online registry in Japan. Methods This is a prospective multicentre observational study. Among the cases registered in the RRS online registry from January 2014 to March 2018, cases from the outpatient department, consisting of the general outpatient department, radiation department, dialysis department, endoscope department, rehabilitation department, and the surrounding areas were eligible for this study. Results A total of 6784 cases were registered, and 1022 cases were included. The main reason for activation was altered mental status (39.1%). Incomplete vital sign recording at activation was 67.0%, whereas body temperature (57.0%) and respiratory rate (36.4%) deficits were frequent. The most common intervention during RRS activation was fluid bolus (38.2%) and oxygen supplementation (30.9%). The general outpatient department accounted for nearly half of the activation locations. The 30-day mortality rate for the location was significantly higher in the dialysis department (P < 0.001). Conclusions We have reported the first study of RRSs in outpatient departments at multicentre facilities in Japan. The difference in the mortality rate for the location was clarified. Future tasks will involve clarifying the RRS outcome indicators in the outpatient department and examining the effectiveness thereof.
Collapse
Affiliation(s)
- Takeshi Aoyama
- Department of Emergency and Critical Care Medicine, Miyazaki Prefectural Miyazaki Hospital, 5-30 Kitatakamatsu-cyou, Miyazaki City, Miyazaki 880-0017, Japan.,Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 5200 Kihara, Kiyotake-cyou, Miyazaki City, Miyazaki 889-1692, Japan
| | - Isao Tsuneyoshi
- Department of Anesthesiology and Intensive Care, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake-cyou, Miyazaki City, Miyazaki 889-1692, Japan
| | - Takanao Otake
- Department of Anesthesiology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki City, Okayama 710-8602, Japan
| | - Kazuo Ouchi
- Department of Medical Safety Management, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan
| | - Yuta Kawase
- Department of Internal Medicine, Kyoritsu General Hospital, 4-33 Goban-cyou, Atsuta-ku, Nagoya City, Aichi 456-8611, Japan
| | - Masayasu Arai
- Kitasato University Hospital, 1-15-1 Kitasato, Minami-ku, Sagamihara City, Kanagawa 252-0375, Japan
| | - Naoaki Shibata
- Wakayama Medical University, 811-1 Kimiidera, Wakayama City, Wakayama 641-8509, Japan
| | - Shinsuke Fujiwara
- Department of Emergency Medicine, National Hospital Organization Ureshino Medical Center, 4279-3 Shimojuku-hei, Oaza, Ureshino-machi, Ureshino City, Saga 843-0393, Japan
| | - Shigeki Fujitani
- Department of Emergency and Critical Care Medicine, St. Marianna University Hospital, 2-16-1 Sugao, Miyamae-ku, Kawasaki City, Kanagawa 216-8511, Japan
| | | |
Collapse
|
21
|
Haga T, Masuyama T, Hayashi Y, Atsumi T, Ishii K, Fujiwara S. Characteristics of In-Hospital Patients with Congenital Heart Disease Requiring Rapid Response System Activations: A Japanese Database Study. CONGENIT HEART DIS 2021. [DOI: 10.32604/chd.2021.017407] [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: 11/15/2022]
|
22
|
Kojima K, Juma KM, Akagi S, Hayashi K, Takita T, O'Sullivan CK, Fujiwara S, Nakura Y, Yanagihara I, Yasukawa K. Solvent engineering studies on recombinase polymerase amplification. J Biosci Bioeng 2020; 131:219-224. [PMID: 33177003 DOI: 10.1016/j.jbiosc.2020.10.001] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/27/2020] [Accepted: 10/01/2020] [Indexed: 11/24/2022]
Abstract
Recombinase polymerase amplification (RPA) is a technique that is used to specifically amplify a target nucleic acid sequence. Unlike the polymerase chain reaction (PCR), RPA is performed at a constant temperature between 37 and 42°C. Therefore, it can be potentially used for the onsite detection of various pathogens when combined with DNA extraction and amplicon detection techniques. In this study, we prepared recombinant recombinase and single-stranded DNA-binding protein from T4 phage and used them to examine the effects of reaction conditions and additives on the efficiency of RPA. The results revealed that the optimal pH was 7.5-8.0, optimal potassium acetate concentration was 40-80 mM, and optimal reaction temperature was 37-45°C although dimethyl sulfoxide at 5% v/v and formamide at 5% v/v inhibited the reaction. Our results suggest that RPA could be conducted using a wider range of optimal reaction conditions than those required for PCR and that RPA is highly suitable for point-of-care use.
Collapse
Affiliation(s)
- Kenji Kojima
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Kevin Maafu Juma
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Shihomi Akagi
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Kaichi Hayashi
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Ciara K O'Sullivan
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain; ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Shinsuke Fujiwara
- Department of Bioscience, School of Science and Technology, Kwansei-Gakuin University, Hyogo 669-1337, Japan
| | - Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Osaka 594-1101, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Osaka 594-1101, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan.
| |
Collapse
|
23
|
Yasukawa K, Yanagihara I, Fujiwara S. Alteration of enzymes and their application to nucleic acid amplification (Review). Int J Mol Med 2020; 46:1633-1643. [PMID: 33000189 PMCID: PMC7521554 DOI: 10.3892/ijmm.2020.4726] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 05/29/2020] [Indexed: 12/17/2022] Open
Abstract
Since the discovery of polymerase chain reaction (PCR) in 1985, several methods have been developed to achieve nucleic acid amplification, and are currently used in various fields including clinical diagnosis and life science research. Thus, a wealth of information has accumulated regarding nucleic acid-related enzymes. In this review, some nucleic acid-related enzymes were selected and the recent advances in their modification along with their application to nucleic acid amplification were described. The discussion also focused on optimization of the corresponding reaction conditions. Using newly developed enzymes under well-optimized reaction conditions, the sensitivity, specificity, and fidelity of nucleic acid tests can be improved successfully.
Collapse
Affiliation(s)
- Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606‑8502, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Izumi, Osaka 594‑1101, Japan
| | - Shinsuke Fujiwara
- Department of Bioscience, School of Science and Technology, Kwansei‑Gakuin University, Sanda, Hyogo 669‑1337, Japan
| |
Collapse
|
24
|
Miura H, Takada M, Fujiwara M, Fujiwara S. Topical imiquimod monotherapy for a recurrent lesion of Merkel cell carcinoma. Br J Dermatol 2020; 184:e30. [PMID: 32845515 DOI: 10.1111/bjd.19402] [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] [Received: 05/26/2020] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 11/27/2022]
Affiliation(s)
- H Miura
- Department of Dermatology, Osaka Minato Central Hospital, Osaka, Japan
| | - M Takada
- Department of Dermatology, Osaka Minato Central Hospital, Osaka, Japan
| | - M Fujiwara
- Department of Dermatology, Osaka Minato Central Hospital, Osaka, Japan
| | - S Fujiwara
- Department of Dermatology, Osaka Minato Central Hospital, Osaka, Japan
| |
Collapse
|
25
|
Fujimoto K, Uwano I, Sasaki M, Oshida S, Tsutsui S, Yanagihara W, Fujiwara S, Kobayashi M, Kubo Y, Yoshida K, Terasaki K, Ogasawara K. Acetazolamide-Loaded Dynamic 7T MR Quantitative Susceptibility Mapping in Major Cerebral Artery Steno-Occlusive Disease: Comparison with PET. AJNR Am J Neuroradiol 2020; 41:785-791. [PMID: 32299799 DOI: 10.3174/ajnr.a6508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/01/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Dynamic changes in cerebrovascular reactivity after acetazolamide administration vary markedly among patients with major cerebral arterial steno-occlusive disease. MR quantitative susceptibility mapping can dynamically quantify the cerebral magnetic susceptibility. The purpose of this study was to determine whether dynamic changes in susceptibility after administration of acetazolamide on 7T quantitative susceptibility mapping are associated with pre-existing states of CBV and the cerebral metabolic rate of oxygen in the cerebral hemispheres with major cerebral arterial steno-occlusive disease. MATERIALS AND METHODS Sixty-five patients underwent 7T MR imaging at baseline and at 5, 10, 15, and 20 minutes after acetazolamide administration. Differences between the susceptibility of venous structures and surrounding brain tissue were calculated in the quantitative susceptibility mapping images. Susceptibility differences at 5, 10, 15, and 20 minutes after acetazolamide administration relative to baseline were calculated in 97 cerebral hemispheres with major cerebral arterial steno-occlusive disease. CBV and the cerebral metabolic rate of oxygen were also calculated using 15O-gas PET in the resting state. RESULTS Dynamic changes of susceptibility after acetazolamide administration were classified into 3 patterns: abnormally increasing 5 or 10 minutes after acetazolamide administration; abnormally decreasing within 20 minutes after acetazolamide administration; and remaining unchanged after acetazolamide administration. CBV was significantly greater in the first pattern than in the latter 2. The cerebral metabolic rate of oxygen differed significantly in descending order from the first to middle to last pattern. CONCLUSIONS Dynamic changes of susceptibility after acetazolamide administration on 7T MR quantitative susceptibility mapping are associated with pre-existing states of CBV and the cerebral metabolic rate of oxygen in major cerebral arterial steno-occlusive disease.
Collapse
Affiliation(s)
- K Fujimoto
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - I Uwano
- Division of Ultrahigh Field MRI, Institute for Biomedical Sciences (I.U., M.S.)
| | - M Sasaki
- Division of Ultrahigh Field MRI, Institute for Biomedical Sciences (I.U., M.S.)
| | - S Oshida
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - S Tsutsui
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - W Yanagihara
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - S Fujiwara
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - M Kobayashi
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - Y Kubo
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - K Yoshida
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.)
| | - K Terasaki
- Cyclotron Research Center (K.T.), Iwate Medical University School of Medicine, Morioka, Japan
| | - K Ogasawara
- From the Department of Neurosurgery (K.F., S.O., S.T., W.Y., S.F., M.K., Y.K., K.Y., K.O.),
| |
Collapse
|
26
|
Fujiwara S, Atagi K, Moriyasu M, Naito T, Taneda K, Hsu HC, Lefor AK, Fujitani S. How to facilitate a rapid response system in Japan: a promotion course based on TeamSTEPPS. Acute Med Surg 2020; 7:e488. [PMID: 32076556 PMCID: PMC7013205 DOI: 10.1002/ams2.488] [Citation(s) in RCA: 5] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/23/2019] [Accepted: 01/08/2020] [Indexed: 11/06/2022] Open
Abstract
Aim In Japan, the number of facilities introducing a rapid response system (RRS) has been increasing. However, many institutions have had unsuccessful implementations. In order to implement RRS smoothly, a plan that meets the needs of each hospital is needed. Methods Rapid response system teams from each hospital, including a physician and staff in charge of medical safety, from the RRS online registry were invited to attend a workshop. The workshop aimed to develop and implement RRS. The course curriculum was based on the Team Strategies and Tools to Enhance Performance and Patient Safety (TeamSTEPPS) developed in the USA. Participating facilities were required to formulate an RRS introduction plan referring to Kotter’s 8‐step change model to overcome barriers in the implementation of RRS. The change in medical emergency team activations comparing the intervention and control group hospitals was compared. Results Sixteen institutions were eligible for this study. After participating in the workshop, there was a tendency toward more frequent activation of medical emergency teams in the intervention group (P = 0.075). According to a self‐evaluation from each facility, there is great difficulty in overcoming the 5th step of Kotter’s model (empower people to act the vision). Conclusion This step‐by‐step evaluation clearly identified a problem with implementation and provided measures for resolution corresponding to each facility. There was a major barrier to overcome the 5th step of Kotter’s model in leading change, which represents the attitude toward implementing RRS in institutions.
Collapse
Affiliation(s)
| | - Kazuaki Atagi
- Department of Intensive Care Unit Nara Prefecture General Medical Center Nara Japan
| | - Megumi Moriyasu
- Respiratory Care and Rapid Response System Kitasato University Hospital Kanagawa Japan
| | - Takaki Naito
- Department of Emergency and Critical Care Medicine St. Marianna University School of Medicine Kanagawa Japan
| | | | | | | | - Shigeki Fujitani
- Department of Emergency and Critical Care Medicine St. Marianna University School of Medicine Kanagawa Japan
| |
Collapse
|
27
|
Naito T, Fujiwara S, Kawasaki T, Sento Y, Nakada T, Arai M, Atagi K, Fujitani S. First report based on the online registry of a Japanese multicenter rapid response system: a descriptive study of 35 institutions in Japan. Acute Med Surg 2020; 7:e454. [PMID: 31988766 PMCID: PMC6971441 DOI: 10.1002/ams2.454] [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] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/07/2019] [Indexed: 11/07/2022] Open
Abstract
AIM Although the concept of a rapid response system (RRS) has been gradually accepted in Japan, detailed information on the Japanese RRS is not well known. We provide the first report of the RRS epidemiological situation based on 4 years of RRS online registry data. METHODS This is a prospective observational study. All patients registered between January 2014 and March 2018 were eligible for this study. Data related to RRS including physiological measurements were recorded. The mortality rates after rapid response team/medical emergency team (RRT/MET) intervention and after 30 days were recorded as outcomes. RESULTS In total, 6,784 cases were registered at 35 facilities. Cancer (23.1%) was the most common existing comorbidity. Limitation of medical treatment was identified in 12.7% of the cases. The respiratory category was most frequently activated in 41.3% of the cases. Only two institutions had received more than 15 calls per 1,000 admissions. During RRT/MET intervention, death occurred in 3.6% and transfers to intensive care units occurred in 28.2% of the cases. After 30 days, the mortality rate was significantly higher in the night than in the day shift (30.7% versus 20.4%, respectively, P < 0.01). CONCLUSIONS We report the first epidemiological study of RRS in Japan. Japanese facilities had a very low rate of RRT/MET calls and a higher mortality rate in the night than in the day shift. Further promotion to increase the number of calls and implementation of a 24-h RRT/MET is required.
Collapse
Affiliation(s)
- Takaki Naito
- Department of Emergency and Critical Care MedicineSt. Marianna University School of MedicineKawasaki‐ShiKanagawaJapan
| | - Shinsuke Fujiwara
- Department of Emergency MedicineNHO Ureshino Medical CenterUreshino‐machi, Ureshino‐ShiSagaJapan
| | - Tatsuya Kawasaki
- Department of Pediatric Critical CareShizuoka Children's HospitalShizuoka‐shiShizuokaJapan
| | - Yoshiki Sento
- Department of Anesthesiology and Intensive Care MedicineNagoya City University Graduate School of Medical SciencesNagoya‐ShiAichiJapan
| | - Taka‐aki Nakada
- Department of Emergency and Critical Care MedicineChiba University Graduate School of MedicineChuoChibaJapan
| | - Masayasu Arai
- Department of AnesthesiologyKitazato University School of MedicineSagamihara‐ShiKanagawaJapan
| | - Kazuaki Atagi
- Division of Critical Care MedicineNara Prefecture General Medical CenterNara‐ShiNaraJapan
| | - Shigeki Fujitani
- Department of Emergency and Critical Care MedicineSt. Marianna University School of MedicineKawasaki‐ShiKanagawaJapan
| |
Collapse
|
28
|
Morisawa K, Fujitani S, Homma Y, Shigemitsu K, Saito N, Hayakawa K, Yasuda H, Hifumi T, Rinka H, Mayumi T, Fujiwara S, Murao Y, Taira Y. Can the global end-diastolic volume index guide fluid management in septic patients? A multicenter randomized controlled trial. Acute Med Surg 2019; 7:e468. [PMID: 31988780 PMCID: PMC6971429 DOI: 10.1002/ams2.468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 06/18/2019] [Accepted: 09/28/2019] [Indexed: 01/20/2023] Open
Abstract
Aim An index that accurately measures intravascular volume is paramount for the optimal resuscitation of sepsis. Selecting an adequate indicator to substitute for central venous pressure (CVP) has remained an issue. The objective of our study was to compare the usefulness of standard early goal‐directed therapy (EGDT) with CVP (EGDT‐CVP) and modified EGDT with global end‐diastolic volume index (GEDI; EGDT‐GEDI) for sepsis. Methods This was a multicenter prospective randomized controlled study. All patients with sepsis who were expected to require mechanical ventilator support for a minimum of 48 h were included. The patients were classified into an EGDT‐CVP group and an EGDT‐GEDI group. All participants underwent the extubation protocol. The primary outcome was the ventilator‐free days over a 28‐day period. Results The ventilator‐free days was not significantly different between the two groups (P = 0.59). However, the EGDT‐GEDI group showed a trend of shorter ventilator support duration (5.1 days [2.0–8.7 days] versus 3.9 days [2.4–5.7 days], P = 0.27) and length of stay in the intensive care unit (7.2 days [3.8–10.7 days] versus 5.1 days [3.7–8.8 days], P = 0.05) and a smaller 3‐day infusion balance than the EGDT‐CVP group (4,405 mL [1,092–8,163 mL] versus 3,046 mL [830–6,806 mL], P = 0.34), but the differences were not statistically significant. Conclusion Although there was no significant efficacy, EGDT guided by GEDI showed a trend of shorter length of stay in the intensive care unit and lower 3‐day infusion balance than the EGDT‐CVP group in sepsis. The GEDI monitoring did not appear to improve the ventilator‐free days over a 28‐day period.
Collapse
Affiliation(s)
- Kenichiro Morisawa
- Department of Emergency and Critical Care Medicine St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Shigeki Fujitani
- Department of Emergency and Critical Care Medicine St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| | - Yosuke Homma
- Department of Emergency and Critical Care Medicine Tokyo Bay Urayasu Ichikawa Medical Center Urayasu Chiba Japan
| | - Kazuaki Shigemitsu
- Emergency and Critical Care Medical Center Osaka City General Hospital Miyakojima-ku Osaka Japan
| | - Nobuyuki Saito
- Nippon Medical School Chiba Hokusou Hospital Inzai Chiba Japan
| | - Katsura Hayakawa
- Department of Emergency and Critical Care Medicine Saitama Red Cross Hospital Saitama-shi Saitama Japan
| | - Hideto Yasuda
- Japanese Red Cross Musashino Hospital Musashino-shi Tokyo Japan
| | - Toru Hifumi
- Kagawa University Hospital Kita-gun Kagawa Japan
| | - Hiroshi Rinka
- Emergency and Critical Care Medical Center Osaka City General Hospital Miyakojima-ku Osaka Japan
| | - Toshihiko Mayumi
- Department of Emergency Medicine School of Medicine University of Occupational and Environmental Health Kitakyushu-shi Fukuoka Japan
| | - Shinsuke Fujiwara
- Department of Emergency Medicine National Hospital Organization Ureshino Medical Center Ureshino Saga Japan
| | - Yoshinori Murao
- Department of Emergency and Critical Care Medicine Kindai University Faculty of Medicine Osakasayama Osaka Japan
| | - Yasuhiko Taira
- Department of Emergency and Critical Care Medicine St. Marianna University School of Medicine Kawasaki Kanagawa Japan
| |
Collapse
|
29
|
Fukuda W, Yamori Y, Hamakawa M, Osaki M, Fukuda M, Hidese R, Kanesaki Y, Okamoto-Kainuma A, Kato S, Fujiwara S. Genes regulated by branched-chain polyamine in the hyperthermophilic archaeon Thermococcus kodakarensis. Amino Acids 2019; 52:287-299. [DOI: 10.1007/s00726-019-02793-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 10/01/2019] [Indexed: 01/22/2023]
|
30
|
Kushida T, Narumi I, Ishino S, Ishino Y, Fujiwara S, Imanaka T, Higashibata H. Pol B, a Family B DNA Polymerase, in Thermococcus kodakarensis is Important for DNA Repair, but not DNA Replication. Microbes Environ 2019; 34:316-326. [PMID: 31353332 PMCID: PMC6759347 DOI: 10.1264/jsme2.me19075] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Thermococcus kodakarensis possesses two DNA polymerases, Pol B and Pol D. We generated a T. kodakarensis strain (DPB1) in which polB was completely deleted and a derivative of DPB1 in which polB was overexpressed; neither of the generated strains exhibited any growth delay, indicating that the lack or overexpression of Pol B in T. kodakarensis did not affect cell growth. We also found that DPB1 showed higher sensitivity to four DNA-damaging agents (ultraviolet C irradiation, γ-ray irradiation, methyl methanesulfonate, and mitomycin C) than the parental strain. The sensitivity of DPB1 was restored to the level of the parent strain by the introduction of a plasmid harboring polB, suggesting that the DNA damage-sensitive phenotype of DPB1 was due to the loss of polB. Collectively, these results indicate that Pol B is involved in DNA repair, but not DNA replication, which, in turn, implies that Pol D is the sole replicative DNA polymerase in Thermococcus species.
Collapse
Affiliation(s)
| | - Issay Narumi
- Graduate School of Life Sciences, Toyo University
| | - Sonoko Ishino
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
| | - Yoshizumi Ishino
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
| | - Shinsuke Fujiwara
- Department of Bioscience, School of Science and Technology, Kwansei-Gakuin University
| | - Tadayuki Imanaka
- Research Organization of Science and Technology, Ritsumeikan University
| | | |
Collapse
|
31
|
Hidese R, Toyoda M, Yoshino KI, Fukuda W, Wihardja GA, Kimura S, Fujita J, Niitsu M, Oshima T, Imanaka T, Mizohata E, Fujiwara S. The C-terminal flexible region of branched-chain polyamine synthase facilitates substrate specificity and catalysis. FEBS J 2019; 286:3926-3940. [PMID: 31162806 DOI: 10.1111/febs.14949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/03/2019] [Accepted: 06/01/2019] [Indexed: 01/26/2023]
Abstract
Branched-chain polyamine synthase (BpsA) catalyzes sequential aminopropyl transfer from the donor, decarboxylated S-adenosylmethionine (dcSAM), to the acceptor, linear-chain polyamine, resulting in the production of a quaternary-branched polyamine via tertiary branched polyamine intermediates. Here, we analyzed the catalytic properties and X-ray crystal structure of Tth-BpsA from Thermus thermophilus and compared them with those of Tk-BpsA from Thermococcus kodakarensis, which revealed differences in acceptor substrate specificity and C-terminal structure between these two enzymes. To investigate the role of the C-terminal flexible region in acceptor recognition, a region (QDEEATTY) in Tth-BpsA was replaced with that in Tk-BpsA (YDDEESSTT) to create chimeric Tth-BpsA C9, which showed a severe reduction in catalytic efficiency toward N4 -aminopropylnorspermidine, but not toward N4 -aminopropylspermidine, mimicking Tk-BpsA substrate specificity. Tth-BpsA C9 Tyr346 and Thr354 contributed to discrimination between tertiary branched-chain polyamine substrates, suggesting that the C-terminal region of BpsA recognizes acceptor substrates. Liquid chromatography-tandem mass spectrometry analysis on a Tk-BpsA reaction mixture with dcSAM revealed two aminopropyl groups bound to two of five aspartate/glutamate residues (Glu339 , Asp342 , Asp343 , Glu344 , and Glu345 ) in the C-terminal flexible region. Mutating each of these five amino acid residues to asparagine/glutamine resulted in a slight decrease in activity. The quadruple mutant D342N/D343N/E344Q/E345Q exhibited a severe reduction in catalytic efficiency, suggesting that these aspartate/glutamate residues function to receive aminopropyl chains. In addition, the X-ray crystal structure of the Tk-BpsA ternary complex bound to N4 -bis(aminopropyl)spermidine revealed that Asp126 and Glu259 interacted with the aminopropyl moiety in N4 -aminopropylspermidine.
Collapse
Affiliation(s)
- Ryota Hidese
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
| | - Masataka Toyoda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan
| | | | - Wakao Fukuda
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
| | - Gita Adhirani Wihardja
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
| | - Seigo Kimura
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
| | - Junso Fujita
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Masaru Niitsu
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Japan
| | - Tairo Oshima
- Institute of Environmental Microbiology, Kyowa-kako Co., Ltd, Machida, Japan
| | - Tadayuki Imanaka
- The Research Organization of Science & Technology, Ritsumeikan University, Kusatsu, Japan
| | - Eiichi Mizohata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan.,Japan Science and Technology Agency, PRESTO, Kawaguchi, Japan
| | - Shinsuke Fujiwara
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
| |
Collapse
|
32
|
Nishio T, Yoshikawa Y, Fukuda W, Umezawa N, Higuchi T, Fujiwara S, Imanaka T, Yoshikawa K. Branched‐Chain Polyamine Found in Hyperthermophiles Induces Unique Temperature‐Dependent Structural Changes in Genome‐Size DNA. Chemphyschem 2018. [DOI: 10.1002/cphc.201800799] [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: 11/07/2022]
Affiliation(s)
- Takashi Nishio
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| | - Wakao Fukuda
- School of Science and TechnologyKwansei-gakuin University Sanda 669-1337 Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical SciencesNagoya City University Nagoya 467-8603 Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical SciencesNagoya City University Nagoya 467-8603 Japan
| | - Shinsuke Fujiwara
- School of Science and TechnologyKwansei-gakuin University Sanda 669-1337 Japan
| | - Tadayuki Imanaka
- Research Organization of Science and TechnologyRitsumeikan University Kusatsu 525-8577 Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| |
Collapse
|
33
|
Nishio T, Yoshikawa Y, Fukuda W, Umezawa N, Higuchi T, Fujiwara S, Imanaka T, Yoshikawa K. Front Cover: Branched‐Chain Polyamine Found in Hyperthermophiles Induces Unique Temperature‐Dependent Structural Changes in Genome‐Size DNA (ChemPhysChem 18/2018). Chemphyschem 2018. [DOI: 10.1002/cphc.201800800] [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: 11/08/2022]
Affiliation(s)
- Takashi Nishio
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| | - Wakao Fukuda
- School of Science and TechnologyKwansei-gakuin University Sanda 669-1337 Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical SciencesNagoya City University Nagoya 467-8603 Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical SciencesNagoya City University Nagoya 467-8603 Japan
| | - Shinsuke Fujiwara
- School of Science and TechnologyKwansei-gakuin University Sanda 669-1337 Japan
| | - Tadayuki Imanaka
- Research Organization of Science and TechnologyRitsumeikan University Kusatsu 525-8577 Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical SciencesDoshisha University Kyotanabe 610-0394 Japan
| |
Collapse
|
34
|
Okano H, Baba M, Kawato K, Hidese R, Yanagihara I, Kojima K, Takita T, Fujiwara S, Yasukawa K. High sensitive RNA detection by one-step RT-PCR using the genetically engineered variant of DNA polymerase with reverse transcriptase activity from hyperthermophilies. J Biosci Bioeng 2018; 125:275-281. [PMID: 29100684 DOI: 10.1016/j.jbiosc.2017.10.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 10/03/2017] [Accepted: 10/07/2017] [Indexed: 01/14/2023]
Abstract
One-step RT-PCR has not been widely used even though some thermostable DNA polymerases with reverse transcriptase (RT) activity were developed from bacterial and archaeal polymerases, which is owing to low cDNA synthesis activity from RNA. In the present study, we developed highly-sensitive one-step RT-PCR using the single variant of family A DNA polymerase with RT activity, K4polL329A (L329A), from the hyperthermophilic bacterium Thermotoga petrophila K4 or the 16-tuple variant of family B DNA polymerase with RT activity, RTX, from the hyperthermophilic archaeon Thermococcus kodakarensis. Optimization of reaction condition revealed that the activities for cDNA synthesis and PCR of K4polL329A and RTX were highly affected by the concentrations of MgCl2 and Mn(OCOCH3)2 as well as those of K4polL329A or RTX. Under the optimized condition, 300 copies/μl of target RNA in 10 μl reaction volumes were successfully detected by the one-step RT-PCR with K4polL329A or RTX, which was almost equally sensitive enough compared with the current RT-PCR condition using retroviral RT and thermostable DNA polymerase. Considering that K4polL329A and RTX are stable even at 90-100°C, our results suggest that the one-step RT-PCR with K4polL329A or RTX is more advantageous than the current one.
Collapse
Affiliation(s)
- Hiroyuki Okano
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan
| | - Misato Baba
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan
| | - Katsuhiro Kawato
- Department of Bioscience, School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Ryota Hidese
- Department of Bioscience, School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, 840 Murodo-cho, Izumi 594-1101, Osaka, Japan
| | - Kenji Kojima
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan
| | - Teisuke Takita
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan
| | - Shinsuke Fujiwara
- Department of Bioscience, School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kitashirakawa Sakyo-ku, Kyoto 606-8502, Japan.
| |
Collapse
|
35
|
Sasaki N, Ozono R, Fujiwara S, Yamashita H, Yamamoto H, Kihara Y. P2541Poor sleep is associated with serum N-terminal pro-brain natriuretic peptide level in elderly people. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2541] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- N Sasaki
- Hiroshima Atomic Bomb Casualty Council, Health Management and Promotion Center, Hiroshima, Japan
| | - R Ozono
- Ozono Clinic Internal Medicine & Cardiology, Mihara, Japan
| | - S Fujiwara
- Hiroshima Atomic Bomb Casualty Council, Health Management and Promotion Center, Hiroshima, Japan
| | - H Yamashita
- Hiroshima University Graduate School of Biomedical and Health Sciences, Department of Psychiatry and Neurosciences, Hiroshima, Japan
| | - H Yamamoto
- Hiroshima University Graduate School of Biomedical and Health Sciences, Department of Cardiovascular Medicine, Hiroshima, Japan
| | - Y Kihara
- Hiroshima University Graduate School of Biomedical and Health Sciences, Department of Cardiovascular Medicine, Hiroshima, Japan
| |
Collapse
|
36
|
Nishio T, Yoshikawa Y, Fukuda W, Umezawa N, Higuchi T, Fujiwara S, Imanaka T, Yoshikawa K. Branched-Chain Polyamine Found in Hyperthermophiles Induces Unique Temperature-Dependent Structural Changes in Genome-Size DNA. Chemphyschem 2018; 19:2299-2304. [PMID: 29931720 PMCID: PMC6175440 DOI: 10.1002/cphc.201800396] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 04/28/2018] [Indexed: 12/31/2022]
Abstract
A pentavalent branched‐chain polyamine, N4‐bis(aminopropyl)spermidine 3(3)(3)4, is a unique polycation found in the hyperthermophilic archaeon Thermococcus kodakarensis, which grows at temperatures between 60 and 100 °C. We studied the effects of this branched‐chain polyamine on DNA structure at different temperatures up to 80 °C. Atomic force microscopic observation revealed that 3(3)(3)4 induces a mesh‐like structure on a large DNA (166 kbp) at 24 °C. With an increase in temperature, DNA molecules tend to unwind, and multiple nano‐loops with a diameter of 10–50 nm are generated along the DNA strand at 80 °C. These results were compared to those obtained with linear‐chain polyamines, homocaldopentamine 3334 and spermidine, the former of which is a structural isomer of 3(3)(3)4. These specific effects are expected to neatly concern with its role on high‐temperature preference in hyperthermophiles.
Collapse
Affiliation(s)
- Takashi Nishio
- Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0394, Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0394, Japan
| | - Wakao Fukuda
- School of Science and Technology, Kwansei-gakuin University, Sanda, 669-1337, Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Shinsuke Fujiwara
- School of Science and Technology, Kwansei-gakuin University, Sanda, 669-1337, Japan
| | - Tadayuki Imanaka
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0394, Japan
| |
Collapse
|
37
|
Shinoda Y, Sawada R, Fujiwara S, Inokuchi H, Karasawa Y, Haga N. Prediction of the pathological fracture risk during stance and fall-loading configurations for metastases in the proximal femur, using a computed tomography-based finite element method. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
38
|
Haga N, Shinoda Y, Fujiwara S, Mano H, Okada K, Tanaka H. Orthotic treatment for hip and knee pathologies in patients with congenital insensitivity to pain with anhidrosis. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
39
|
Minagi Y, Ono T, Hori K, Fujiwara S, Tokuda Y, Murakami K, Maeda Y, Sakoda S, Yokoe M, Mihara M, Mochizuki H. Cover Image. J Oral Rehabil 2018. [DOI: 10.1111/joor.12640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
40
|
Sai K, Fujiwara S, Hariya T, Aoki H. 677 Positive correlation between thermal sensitivity and trans-epidermal water loss on healthy human skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.686] [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: 10/17/2022]
|
41
|
Minagi Y, Ono T, Hori K, Fujiwara S, Tokuda Y, Murakami K, Maeda Y, Sakoda S, Yokoe M, Mihara M, Mochizuki H. Relationships between dysphagia and tongue pressure during swallowing in Parkinson's disease patients. J Oral Rehabil 2018; 45:459-466. [DOI: 10.1111/joor.12626] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Y. Minagi
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - T. Ono
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - K. Hori
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - S. Fujiwara
- Division of Comprehensive Prosthodontics; Graduated School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - Y. Tokuda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - K. Murakami
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - Y. Maeda
- Department of Prosthodontics, Gerodontology and Oral Rehabilitation; Graduate School of Dentistry; Osaka University; Suita Japan
| | - S. Sakoda
- Department of Neurology; Toneyama National Hospital; Toyonaka Japan
| | - M. Yokoe
- Department of Neurology; Toyonaka City Hospital; Toyonaka Japan
| | - M. Mihara
- Department of Neurology; Osaka University Graduate School of Medicine; Suita Japan
| | - H. Mochizuki
- Department of Neurology; Osaka University Graduate School of Medicine; Suita Japan
| |
Collapse
|
42
|
Ishii Y, Akasaka N, Sakoda H, Hidese R, Fujiwara S. Leucine responsive regulatory protein is involved in methionine metabolism and polyamine homeostasis in acetic acid bacterium Komagataeibacter europaeus. J Biosci Bioeng 2018; 125:67-75. [DOI: 10.1016/j.jbiosc.2017.07.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/03/2017] [Accepted: 07/31/2017] [Indexed: 01/29/2023]
|
43
|
Abstract
Thermophiles are organisms that grow optimally at temperatures higher than 55 °C. They contain two types of unusual longer/branched-chain polyamines in addition to common polyamines such as spermidine and putrescine. These unusual polyamines contribute to the survival of hyperthermophiles at high temperatures. Recently, the novel aminopropyltransferase BpsA was found to be responsible for the biosynthesis of branched-chain polyamines in the hyperthermophilic archaeon Thermococcus kodakarensis, which contains N 4-bis(aminopropyl)spermidine as the major polyamine. This compound is synthesized by the sequential addition of decarboxylated S-adenosylmethionine (dcSAM) aminopropyl groups to spermidine via the bifunctional catalytic action of BpsA. In this chapter, methods for the extraction and identification of branched-chain polyamines are presented, along with methods for the production and characterization of recombinant T. kodakarensis BpsA as a model aminopropyltransferase.
Collapse
Affiliation(s)
- Ryota Hidese
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan
| | - Wakao Fukuda
- Department of Biotechnology, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Masaru Niitsu
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, Sakado, Saitama, 350-0295, Japan
| | - Shinsuke Fujiwara
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.
- Research Center for Intelligent, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.
| |
Collapse
|
44
|
Hidese R, Kawato K, Nakura Y, Fujiwara A, Yasukawa K, Yanagihara I, Fujiwara S. Thermostable DNA helicase improves the sensitivity of digital PCR. Biochem Biophys Res Commun 2017; 495:2189-2194. [PMID: 29233693 DOI: 10.1016/j.bbrc.2017.12.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/08/2017] [Indexed: 12/12/2022]
Abstract
DNA/RNA helicases, which catalyze the unwinding of duplex nucleic acids using the energy of ATP hydrolysis, contribute to various biological functions involving DNA or RNA. Euryarchaeota-specific helicase Tk-EshA (superfamily 2) from the hyperthermophilic archaeon Thermococcus kodakarensis has been used to decrease generation of mis-amplified products (noise DNAs) during PCR. In this study, we focused on another type (superfamily 1B) of helicase, Tk-Upf1 (TK0178) from T. kodakarensis, and compared its effectiveness in PCR and digital PCR with that of Tk-EshA. For this purpose, we obtained Tk-Upf1 as a recombinant protein and assessed its enzymatic characteristics. Among various double-stranded DNA (dsDNA) substrates (forked, 5' overhung, 3' overhung, and blunt-ended duplex), Tk-Upf1 had the highest unwinding activity toward 5' overhung DNAs. Noise DNAs were also eliminated in the presence of Tk-Upf1 at concentrations 10-fold lower than those required to yield a comparable reduction with Tk-EshA. When a 5' or 3' overhung mis-annealed primer was included as a competitive primer along with specific primers, noise DNAs derived from the mis-annealed primer were eliminated in the presence of Tk-Upf1. In digital PCR, addition of Tk-EshA or Tk-Upf1 increased fluorescent intensities and improved separation between common and risk allele clusters, indicating that both helicases functioned as signal enhancers. In comparison with Tk-EshA, a smaller amount of Tk-Upf1 was required to improve the performance of digital PCR.
Collapse
Affiliation(s)
- Ryota Hidese
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Katsuhiro Kawato
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yukiko Nakura
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Osaka 594-1101, Japan
| | - Ayako Fujiwara
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kiyoshi Yasukawa
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Itaru Yanagihara
- Department of Developmental Medicine, Research Institute, Osaka Women's and Children's Hospital, Osaka 594-1101, Japan
| | - Shinsuke Fujiwara
- Department of Bioscience, Graduate School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
| |
Collapse
|
45
|
Nishida K, Sawada D, Kawai T, Kuwano Y, Fujiwara S, Rokutan K. Para‐psychobiotic
Lactobacillus gasseri
CP
2305 ameliorates stress‐related symptoms and sleep quality. J Appl Microbiol 2017; 123:1561-1570. [DOI: 10.1111/jam.13594] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 07/27/2017] [Accepted: 09/20/2017] [Indexed: 12/20/2022]
Affiliation(s)
- K. Nishida
- Department of Pathophysiology Institute of Biomedical Sciences Tokushima University Graduate School Tokushima Japan
| | - D. Sawada
- R&D Centre Core Technology Laboratories Asahi Group Holdings, Ltd. Sagamihara‐shi Japan
| | - T. Kawai
- Department of Pathophysiology Institute of Biomedical Sciences Tokushima University Graduate School Tokushima Japan
| | - Y. Kuwano
- Department of Pathophysiology Institute of Biomedical Sciences Tokushima University Graduate School Tokushima Japan
| | - S. Fujiwara
- R&D Centre Core Technology Laboratories Asahi Group Holdings, Ltd. Sagamihara‐shi Japan
| | - K. Rokutan
- Department of Pathophysiology Institute of Biomedical Sciences Tokushima University Graduate School Tokushima Japan
| |
Collapse
|
46
|
Nomura JI, Uwano I, Sasaki M, Kudo K, Yamashita F, Ito K, Fujiwara S, Kobayashi M, Ogasawara K. Preoperative Cerebral Oxygen Extraction Fraction Imaging Generated from 7T MR Quantitative Susceptibility Mapping Predicts Development of Cerebral Hyperperfusion following Carotid Endarterectomy. AJNR Am J Neuroradiol 2017; 38:2327-2333. [PMID: 28982786 DOI: 10.3174/ajnr.a5390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 07/18/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Preoperative hemodynamic impairment in the affected cerebral hemisphere is associated with the development of cerebral hyperperfusion following carotid endarterectomy. Cerebral oxygen extraction fraction images generated from 7T MR quantitative susceptibility mapping correlate with oxygen extraction fraction images on positron-emission tomography. The present study aimed to determine whether preoperative oxygen extraction fraction imaging generated from 7T MR quantitative susceptibility mapping could identify patients at risk for cerebral hyperperfusion following carotid endarterectomy. MATERIALS AND METHODS Seventy-seven patients with unilateral internal carotid artery stenosis (≥70%) underwent preoperative 3D T2*-weighted imaging using a multiple dipole-inversion algorithm with a 7T MR imager. Quantitative susceptibility mapping images were then obtained, and oxygen extraction fraction maps were generated. Quantitative brain perfusion single-photon emission CT was also performed before and immediately after carotid endarterectomy. ROIs were automatically placed in the bilateral middle cerebral artery territories in all images using a 3D stereotactic ROI template, and affected-to-contralateral ratios in the ROIs were calculated on quantitative susceptibility mapping-oxygen extraction fraction images. RESULTS Ten patients (13%) showed post-carotid endarterectomy hyperperfusion (cerebral blood flow increases of ≥100% compared with preoperative values in the ROIs on brain perfusion SPECT). Multivariate analysis showed that a high quantitative susceptibility mapping-oxygen extraction fraction ratio was significantly associated with the development of post-carotid endarterectomy hyperperfusion (95% confidence interval, 33.5-249.7; P = .002). Sensitivity, specificity, and positive- and negative-predictive values of the quantitative susceptibility mapping-oxygen extraction fraction ratio for the prediction of the development of post-carotid endarterectomy hyperperfusion were 90%, 84%, 45%, and 98%, respectively. CONCLUSIONS Preoperative oxygen extraction fraction imaging generated from 7T MR quantitative susceptibility mapping identifies patients at risk for cerebral hyperperfusion following carotid endarterectomy.
Collapse
Affiliation(s)
- J-I Nomura
- From the Department of Neurosurgery (J.-i.N., S.F., M.K., K.O.)
| | - I Uwano
- Division of Ultrahigh Field MRI (I.U., M.S., F.Y., K.I), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - M Sasaki
- Division of Ultrahigh Field MRI (I.U., M.S., F.Y., K.I), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - K Kudo
- Department of Diagnostic and Interventional Radiology (K.K.), Hokkaido University School of Medicine, Sappro, Japan
| | - F Yamashita
- Division of Ultrahigh Field MRI (I.U., M.S., F.Y., K.I), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - K Ito
- Division of Ultrahigh Field MRI (I.U., M.S., F.Y., K.I), Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Morioka, Japan
| | - S Fujiwara
- From the Department of Neurosurgery (J.-i.N., S.F., M.K., K.O.)
| | - M Kobayashi
- From the Department of Neurosurgery (J.-i.N., S.F., M.K., K.O.)
| | - K Ogasawara
- From the Department of Neurosurgery (J.-i.N., S.F., M.K., K.O.)
| |
Collapse
|
47
|
Fujiwara S, Yoshimura H, Mimura N, Ohira J, Ueda J, Ishii J, Kono T, Kawamoto M, Tomii K, Kohara N. Cerebrospinal fluid characteristics of encephalitis associated with immune checkpoint inhibitors. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
48
|
Ohira J, Yoshimura H, Mimura N, Ueda J, Fujiwara S, Ishii J, Ohara N, Kono T, Kawamoto M, Ariyoshi K, Kohara N. Predictive factors of postictal duration after generalized tonic clonic seizure. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
49
|
Fujiwara S, Yunoki T, Kono S, Narai H, Manabe Y. Two cases of very late-onset Neuromyelitis Spectrum Disorder (NMOSD) over the age of 80. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
50
|
Ishii J, Kawamoto M, Fujiwara S, Imai Y, Shishido-Hara Y, Nakamichi K, Saijo M, Takahashi K, Nukuzuma S, Kohara N. Punctate lesions demonstrated as an early sign of progressive multifocal leukoencephalopathy in a patient with systemic lupus erythematosus: A clinico-pathological study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3394] [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]
|