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Nakagawa T, Yoshimura A, Sawai Y, Hisamatsu K, Akao T, Masaki K. Japanese sake making using wild yeasts isolated from natural environments. Biosci Biotechnol Biochem 2024; 88:231-236. [PMID: 38364793 DOI: 10.1093/bbb/zbae003] [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: 09/29/2023] [Accepted: 01/04/2024] [Indexed: 02/18/2024]
Abstract
Saccharomyces cerevisiae is one of the most important microorganisms for the food industry, including Japanese sake, beer, wine, bread, and other products. For sake making, Kyokai sake yeast strains are considered one of the best sake yeast strains because these strains possess fermentation properties that are suitable for the quality of sake required. In recent years, the momentum for the development of unique sake, which is distinct from conventional sake, has grown, and there is now a demand to develop unique sake yeasts that have different sake making properties than Kyokai sake yeast strains. In this minireview, we focus on "wild yeasts," which inhabit natural environments, and introduce basic research on the wild yeasts for sake making, such as their genetic and sake fermentation aspects. Finally, we also discuss the molecular breeding of wild yeast strains for sake fermentation and the possibility for sake making using wild yeasts.
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Affiliation(s)
- Tomoyuki Nakagawa
- The Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | | | - Yoshinori Sawai
- Gifu Prefectural Research Institute for Food Sciences, Gifu, Japan
| | | | - Takeshi Akao
- National Research Institute of Brewing, Higashihiroshima, Hiroshima, Japan
| | - Kazuo Masaki
- National Research Institute of Brewing, Higashihiroshima, Hiroshima, Japan
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Ueda H, Tabata J, Seshime Y, Masaki K, Sameshima-Yamashita Y, Kitamoto H. Cutinase-like biodegradable plastic-degrading enzymes from phylloplane yeasts have cutinase activity. Biosci Biotechnol Biochem 2021; 85:1890-1898. [PMID: 34160605 DOI: 10.1093/bbb/zbab113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/14/2021] [Indexed: 11/13/2022]
Abstract
Phylloplane yeast genera Pseudozyma and Cryptococcus secrete biodegradable plastic (BP)-degrading enzymes, termed cutinase-like enzymes (CLEs). Although CLEs contain highly conserved catalytic sites, the whole protein exhibits ≤30% amino acid sequence homology with cutinase. In this study, we analyzed whether CLEs exhibit cutinase activity. Seventeen Cryptococcus magnus strains, which degrade BP at 15 °C, were isolated from leaves and identified the DNA sequence of the CLE in one of the strains. Cutin was prepared from tomato leaves and treated with CLEs from 3 Cryptococcus species (C. magnus, Cryptococcus flavus, and Cryptococcus laurentii) and Pseudozyma antarctia (PaE). A typical cutin monomer, 10,16-dihydroxyhexadecanoic acid, was detected in extracts of the reaction solution via gas chromatography-mass spectrometry, showing that cutin was indeed degraded by CLEs. In addition to the aforementioned monomer, separation analysis via thin-layer chromatography detected high-molecular-weight products resulting from the breakdown of cutin by PaE, indicating that PaE acts as an endo-type enzyme.
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Affiliation(s)
- Hirokazu Ueda
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), Japan
| | - Jun Tabata
- Institute for Plant Protection, National Agriculture and Food Research Organization (NARO), Japan
| | - Yasuyo Seshime
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), Japan
| | | | - Yuka Sameshima-Yamashita
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), Japan
| | - Hiroko Kitamoto
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), Japan
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3
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Masaki K, Fujihara K, Kakizono D, Mizukure T, Okuda M, Mukai N. Aspergillus oryzae acetamidase catalyzes degradation of ethyl carbamate. J Biosci Bioeng 2020; 130:577-581. [DOI: 10.1016/j.jbiosc.2020.07.015] [Citation(s) in RCA: 4] [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: 06/16/2020] [Revised: 07/15/2020] [Accepted: 07/20/2020] [Indexed: 11/25/2022]
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Masaki K, Mizukure T, Kakizono D, Fujihara K, Fujii T, Mukai N. New urethanase from the yeast Candida parapsilosis. J Biosci Bioeng 2020; 130:115-120. [PMID: 32253090 DOI: 10.1016/j.jbiosc.2020.03.005] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/28/2020] [Accepted: 03/09/2020] [Indexed: 02/03/2023]
Abstract
Urethanase (EC 3.5.1.75) is an effective enzyme for removing ethyl carbamate (EC) present in alcoholic beverages. However, urethanase is not well studied and has not yet been developed for practical use. In this study, we report a new urethanase (CPUTNase) from the yeast Candida parapsilosis. Because C. parapsilosis can assimilate EC as its sole nitrogen source, the enzyme was extracted from yeast cells and purified using ion-exchange chromatography. The CPUTNase was estimated as a homotetramer comprising four units of a 61.7 kDa protein. In a 20% ethanol solution, CPUTNase had 73% activity compared with a solution without ethanol. Residual activity after 18 h indicated that CPUTNase was stable in 0%-40% ethanol solutions. The optimum temperature of CPUTNase was 43°C. This enzyme showed urethanase activity at pH 5.5-10.0 and exhibited its highest activity at pH 10. The gene of CPUTNase was identified, and a recombinant enzyme was expressed in the yeast Saccharomyces cerevisiae. Characteristics of recombinant CPUTNase were identical to the native enzyme. The putative amino acid sequence indicated that CPUTNase was an amidase family protein. Further, substrate specificity supported this sequence analysis because CPUTNase showed higher activities toward amide compounds. These results suggest that amidase could be a candidate for urethanase. We discovered a new enzyme and investigated its enzymatic characteristics, sequence, and recombinant CPUTNase expression. These results contribute to a further understanding of urethanase.
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Affiliation(s)
- Kazuo Masaki
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashihiroshima 739-0046, Japan; Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashihiroshima 739-8528, Japan.
| | - Taichi Mizukure
- Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashihiroshima 739-8528, Japan
| | - Dararat Kakizono
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashihiroshima 739-0046, Japan
| | - Kanako Fujihara
- Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashihiroshima 739-8528, Japan
| | - Tsutomu Fujii
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashihiroshima 739-0046, Japan; Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashihiroshima 739-8528, Japan
| | - Nobuhiko Mukai
- National Research Institute of Brewing, 3-7-1 Kagamiyama, Higashihiroshima 739-0046, Japan
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Pham KD, Shida Y, Miyata A, Takamizawa T, Suzuki Y, Ara S, Yamazaki H, Masaki K, Mori K, Aburatani S, Hirakawa H, Tashiro K, Kuhara S, Takaku H, Ogasawara W. Effect of light on carotenoid and lipid production in the oleaginous yeast Rhodosporidium toruloides. Biosci Biotechnol Biochem 2020; 84:1501-1512. [PMID: 32189572 DOI: 10.1080/09168451.2020.1740581] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The oleaginous yeast Rhodosporodium toruloides is receiving widespread attention as an alternative energy source for biofuels due to its unicellular nature, high growth rate and because it can be fermented on a large-scale. In this study, R. toruloides was cultured under both light and dark conditions in order to understand the light response involved in lipid and carotenoid biosynthesis. Our results from phenotype and gene expression analysis showed that R. toruloides responded to light by producing darker pigmentation with an associated increase in carotenoid production. Whilst there was no observable difference in lipid production, slight changes in the fatty acid composition were recorded. Furthermore, a two-step response was found in three genes (GGPSI, CAR1, and CAR2) under light conditions and the expression of the gene encoding the photoreceptor CRY1 was similarly affected.
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Affiliation(s)
- Khanh Dung Pham
- Department of Bioengineering, Nagaoka University of Technology , Niigata, Japan
| | - Yosuke Shida
- Department of Bioengineering, Nagaoka University of Technology , Niigata, Japan
| | - Atsushi Miyata
- Department of Bioengineering, Nagaoka University of Technology , Niigata, Japan
| | - Takeru Takamizawa
- Department of Bioengineering, Nagaoka University of Technology , Niigata, Japan
| | - Yoshiyuki Suzuki
- Advanced Course, National Institute of Technology, Nagaoka College , Niigata, Japan
| | - Satoshi Ara
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata, Japan
| | - Harutake Yamazaki
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata, Japan
| | - Kazuo Masaki
- Brewing Technology Division, National Research Institute of Brewing (NRIB) , Hiroshima, Japan
| | - Kazuki Mori
- Advance Course, National Institute of Technology, Kagoshima College , Kagoshima, Japan
| | - Sachiyo Aburatani
- AIST-Waseda University Computational Bio Big-Data Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tokyo, Japan
| | - Hideki Hirakawa
- Facility for Genome Informatics, Kazusa DNA Research Institute , Ibaraki, Japan
| | - Kosuke Tashiro
- Faculty of Agriculture, Kyushu University , Fukuoka, Japan
| | - Satoru Kuhara
- Graduate School of Genetic Resource Technology, Kyushu University , Fukuoka, Japan
| | - Hiroaki Takaku
- Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences , Niigata, Japan
| | - Wataru Ogasawara
- Department of Bioengineering, Nagaoka University of Technology , Niigata, Japan
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Yamauchi H, Kondo K, Tanaka S, Okuda N, Nakagawa H, Sakata K, Saitoh S, Okayama A, Yoshita K, Miura K, Chan Q, Masaki K, Elliott P, Stamler J, Ueshima H. P6234The relationship of alcohol consumption with risk factors of coronary heart disease and the intake of macro- and micro-nutrients in Japanese: the INTERLIPID study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Many studies have reported the J-shaped relationship between alcohol consumption and coronary heart disease (CHD) risk; therefore, light-drinkers is generally recognized to be associated with the lower risk of CHD. However, the mechanisms of lower risk for CHD in light-drinkers are still unclear. Alcohol drinking status is likely to be associated with not only CHD risk factors but also dietary intake. Nevertheless, few studies report these relationships in detail.
Purpose
The purpose of this study is to evaluate the relationships of alcohol drinking status with CHD classical risk factors and the intake of macro- and micro- nutrients in Japanese.
Methods
Study participants were 1,090 Japanese men and women aged 40–59 years from The INTERLIPID study excepted for 55 individuals who had missing data (n=26) and were past-drinkers (n=29). Alcohol consumption was assessed with two 7-day alcohol records, and average ethanol intake (per week) was calculated. Participants were classified into following 4 groups: non-drinkers (0g/week), light-drinkers (<100 g/week), moderate-drinkers (100–299 g/week), and heavy-drinkers (≥300 g/week). Serum LDL and HDL cholesterol, blood pressure (BP), the prevalence of hypertension and dyslipidemia, and smoking status were assessed as CHD risk factors. The intake of energy and macro- and micro-nutrients were evaluated from the four-timed in-depth 24-hr dietary recalls. Nutrient intake densities were calculated per total energy intake without alcohol. The analysis of variance and chi-squared test were used to evaluate the relations of alcohol status with CHD risk factors and nutrient intake.
Results
Serum HDL cholesterol levels increased and LDL cholesterol levels decreased with increasing alcohol consumption. Systolic and diastolic BP increased with increasing alcohol consumption. J-shaped relationships with alcohol consumption were observed for the proportion of current smoker, number of cigarettes, and the prevalence of hypertension; that is, light-drinkers was lowest among all groups. The prevalence of dyslipidemia was the highest in non-drinkers, and decreased with increasing alcohol consumption. In heavy-drinkers, total energy (kcal/day) was the highest, but energy intake without alcohol (kcal/day) was the lowest. For macronutrients, the intake of carbohydrate (%kcal) decreased, and the intakes of total and animal protein (%kcal) increased with increasing alcohol consumption. The intakes of total cholesterol (mg/1000kcal) and sodium (mg/1000kcal) increased, and total fiber (g/1000kcal) decreased with increasing alcohol consumption. These associations were similar in men and women.
Conclusions
Alcohol consumption was related with not only CHD classical risk factors but also the intake of macro- and micro-nutrients. Non-drinkers had a higher proportion of some CHD risk factors than light-drinkers. These results might influence on J-shaped relationship between alcohol consumption and CHD risk.
Acknowledgement/Funding
1: Ministry of Education, Science, Sports, and Culture of Japan, 2: National Institutes of Health, Bethesda, MD, USA
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Affiliation(s)
- H Yamauchi
- Shiga University of Medical Science, Center for Epidemiologic Research in Asia, Shiga, Japan
| | - K Kondo
- Shiga University of Medical Science, Department of Public Health, Shiga, Japan
| | - S Tanaka
- Shiga University of Medical Science, Department of Medical Statistics, Shiga, Japan
| | - N Okuda
- University of Human Arts and Sciences, Department of Health and Nutrition, Saitama, Japan
| | - H Nakagawa
- Kanazawa Medical University, Department of Epidemiology and Public Health, Kanazawa, Japan
| | - K Sakata
- Iwate Medical University, Department of Hygiene and Preventive Medicine, Iwate, Japan
| | - S Saitoh
- Sapporo Medical University, School of Health Sciences, School of Medicine, Sapporo, Japan
| | - A Okayama
- Research Institute of Strategy for Prevention, Tokyo, Japan
| | - K Yoshita
- Osaka City University, Department of Food Science and Nutrition, Osaka, Japan
| | - K Miura
- Shiga University of Medical Science, Department of Public Health, Shiga, Japan
| | - Q Chan
- Imperial College London, Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, London, United Kingdom
| | - K Masaki
- University of Hawaii and Kuakini Medical Center, Department of Geriatric Medicine, John A. Burns School of Medicine, Honolulu, United States of America
| | - P Elliott
- Imperial College London, Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, London, United Kingdom
| | - J Stamler
- Northwestern University, Department of Preventive Medicine, Feinberg School of Medicine, Chicago, United States of America
| | - H Ueshima
- Shiga University of Medical Science, Center for Epidemiologic Research in Asia, Shiga, Japan
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Masaki K, Asakura T, Nakachi I. The eggs of Paragonimiasis westermani in bronchial lavage fluid. QJM 2019; 112:463-464. [PMID: 30597083 DOI: 10.1093/qjmed/hcy301] [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: 11/14/2022] Open
Affiliation(s)
- K Masaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
- Department of Internal Medicine, Saiseikai Utsunomiya Hospital, Tochigi, Japan
| | - T Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
| | - I Nakachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan
- Department of Internal Medicine, Saiseikai Utsunomiya Hospital, Tochigi, Japan
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Yanagiba M, Masaki K, Shinmori H, Naganuma T. Screening for Lipomyces strains with high ability to accumulate lipids from renewable resources. J GEN APPL MICROBIOL 2019; 65:80-87. [PMID: 30464113 DOI: 10.2323/jgam.2018.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The yeast Lipomyces accumulates triacylglycerols (TAGs) as intracellular fat globules, and these TAGs can be used as source materials for biodiesel production. In this study, we aimed to use this yeast to produce lipids from renewable resources. Using plate culture and micrograph methods, strains with a high lipid-accumulation ability were screened from 15,408 types of systems combining renewable resources, strains, and culture temperatures. The lipid-accumulation ability of the strains was estimated from the fat globule volume, which was calculated using a micrograph. The reliability of this method was examined, and strains with a high lipid-accumulation ability were identified for each renewable resource. Seventy-seven Lipomyces strains (7 deposit, 68 wild-type, 2 mutants) with a high lipid-accumulation ability were selected. A few strains possessed the ability to accumulate large amounts of TAGs from more than four different renewable resources. We found that strains with a high lipid-accumulation ability could efficiently convert consumed carbon sources into TAGs, which could be easily recovered from the fat globules of these strains through physical disruption.
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Affiliation(s)
- Mana Yanagiba
- Biotechnology, Human Environment Medical Engineering, Department of Education Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Kazuo Masaki
- Industrial Technology Center, Gifu Prefectural Government
| | - Hideyuki Shinmori
- Graduate School of Interdisciplinary Research, Division of Engineering, Faculty of Life and Environmental Sciences (Biotechnology), University of Yamanashi
| | - Takafumi Naganuma
- Graduate School of Interdisciplinary Research, Division of Engineering, Faculty of Life and Environmental Sciences (Biotechnology), University of Yamanashi
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Willcox B, Chen R, Masaki K, Craig Willcox D, Allsopp R, Donlon T. CAN WE AGE SUCCESSFULLY? MEASURES OF COMORBIDITY AND HEALTHY AGING IN THE KUAKINI HONOLULU ASIA AGING STUDY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2777] [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: 11/13/2022] Open
Affiliation(s)
- B Willcox
- Kuakini Medical Center, Honolulu, Hawaii, United States
| | - R Chen
- Kuakini Medical Center, Honolulu, HI, USA
| | - K Masaki
- Kuakini Medical Center, Honolulu, HI, USA
| | | | - R Allsopp
- University of Hawaii, Honolulu, HI, USA
| | - T Donlon
- Kuakini Medical Center, Honolulu, HI, USA; University of Hawaii, Honolulu, HI, USA
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Armstrong N, Espeland M, Masaki K, Deal J, Lin F, Resnick S, Rapp S. DIFFERENTIAL ASSOCIATION OF HORMONE THERAPY WITH CHANGE IN GLOBAL COGNITION AND INCIDENT DEMENTIA BY HEARING STATUS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2106] [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: 11/13/2022] Open
Affiliation(s)
| | | | | | - J Deal
- Johns Hopkins Bloomberg School of Public Health
| | - F Lin
- Johns Hopkins University School of Medicine
| | | | - S Rapp
- Wake Forest School of Medicine
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11
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Namkoong H, Asakura T, Ishii M, Yoda S, Masaki K, Sakagami T, Iwasaki E, Yamagishi Y, Kanai T, Betsuyaku T, Hasegawa N. First report of hepatobiliary Mycobacterium avium infection developing obstructive jaundice in a patient with neutralizing anti-interferon-gamma autoantibodies. New Microbes New Infect 2018; 27:4-6. [PMID: 30505452 PMCID: PMC6249401 DOI: 10.1016/j.nmni.2018.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/24/2018] [Accepted: 10/12/2018] [Indexed: 11/04/2022] Open
Abstract
This study describes a patient who experienced hepatobiliary Mycobacterium avium infection associated with neutralizing anti–interferon gamma (IFN-γ) autoantibodies during treatment for disseminated M. avium disease. Hepatobiliary M. avium infection should be considered in jaundiced patients with neutralizing anti–IFN-γ autoantibodies, including those receiving antimycobacterial therapy for disseminated M. avium disease.
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Affiliation(s)
- H Namkoong
- Keio University School of Medicine, Tokyo, Japan.,Eiju General Hospital, Tokyo, Japan
| | - T Asakura
- Keio University School of Medicine, Tokyo, Japan
| | - M Ishii
- Keio University School of Medicine, Tokyo, Japan
| | - S Yoda
- JCHO Saitama Medical Center, Saitama, Japan
| | - K Masaki
- Keio University School of Medicine, Tokyo, Japan
| | - T Sakagami
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - E Iwasaki
- Keio University School of Medicine, Tokyo, Japan
| | - Y Yamagishi
- Keio University School of Medicine, Tokyo, Japan
| | - T Kanai
- Keio University School of Medicine, Tokyo, Japan
| | - T Betsuyaku
- Keio University School of Medicine, Tokyo, Japan
| | - N Hasegawa
- Keio University School of Medicine, Tokyo, Japan
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12
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Naganuma T, Iinuma Y, Nishiwaki H, Murase R, Masaki K, Nakai R. Enhanced Bacterial Growth and Gene Expression of D-Amino Acid Dehydrogenase With D-Glutamate as the Sole Carbon Source. Front Microbiol 2018; 9:2097. [PMID: 30233558 PMCID: PMC6131576 DOI: 10.3389/fmicb.2018.02097] [Citation(s) in RCA: 8] [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: 11/21/2017] [Accepted: 08/16/2018] [Indexed: 02/02/2023] Open
Abstract
In a search for life-supporting, not life-assisting, D-amino acid metabolism, an environmental strain that grows better with D-glutamate as the sole carbon source was isolated from an ordinary river. The strain, designated as A25, exhibited a faster growth rate and greater cell yield with D-glutamate than with L-glutamate. Conversely, the D/L ratio of total cellular glutamate was as low as 4/96, which suggests that D-glutamate is more likely catabolized than anabolized. Strain A25 was phylogenetically most closely related to the gamma-proteobacterial species Raoultella ornithinolytica, with a 16S rRNA gene sequence similarity of 100%. A standard strain, R. ornithinolytica JCM 6096T, also showed similarly enhanced growth with D-glutamate, which was proven for the first time. Gene expression of the enzymes involved in D-amino acid metabolism was assayed by reverse-transcription quantitative PCR (RT-qPCR) using specifically designed primers. The targets were the genes encoding D-amino acid dehydrogenase (DAD; EC 1.4.99.1), glutamate racemase (EC 5.1.1.3), D-glutamate oxidase (EC 1.4.3.7 or EC 1.4.3.15), and UDP-N-acetyl-α-D-muramoyl-L-alanyl-D-glutamate ligase (EC 6.3.2.9). As a result, the growth of strains A25 and R. ornithinolytica JCM 6096T on D-glutamate was conspicuously associated with the enhanced expression of the DAD gene (dadA) in the exponential phase compared with the other enzyme genes. Pseudomonas aeruginosa is also known to grow on D-glutamate as the sole carbon source but to a lesser degree than with L-glutamate. A standard strain of P. aeruginosa, JCM 5962T, was tested for gene expression of the relevant enzymes by RT-qPCR and also showed enhanced dadA expression, but in the stationary phase. Reduction of ferricyanide with D-glutamate was detected in cell extracts of the tested strains, implying probable involvement of DAD in the D-glutamate catabolizing activity. DAD-mediated catalysis may have advantages in the one-step production of α-keto acids and non-production of H2O2 over other enzymes such as racemase and D-amino acid oxidase. The physiological and biochemical importance of DAD in D-amino acid metabolism is discussed.
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Affiliation(s)
- Takeshi Naganuma
- Graduate School of Biosphere Science, Hiroshima University, Higashihiroshima, Japan.,School of Biological Science, Hiroshima University, Higashihiroshima, Japan.,Astrobiology Center, National Institutes of Natural Sciences, Tokyo, Japan
| | - Yoshiakira Iinuma
- Graduate School of Biosphere Science, Hiroshima University, Higashihiroshima, Japan
| | - Hitomi Nishiwaki
- Graduate School of Biosphere Science, Hiroshima University, Higashihiroshima, Japan
| | - Ryota Murase
- School of Biological Science, Hiroshima University, Higashihiroshima, Japan
| | - Kazuo Masaki
- National Research Institute of Brewing, Higashihiroshima, Japan
| | - Ryosuke Nakai
- Microbial and Genetic Resources Research Group, Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.,Applied Molecular Microbiology Research Group, Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Sapporo, Japan
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13
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Thongekkaew J, Fujii T, Masaki K, Koyama K. Evaluation of Candida easanensis JK8 β-glucosidase with potentially hydrolyse non-volatile glycosides of wine aroma precursors. Nat Prod Res 2018; 33:3563-3567. [PMID: 29873255 DOI: 10.1080/14786419.2018.1481845] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Important 'floral' aromas naturally occur in grapes predominantly as flavourless glycoconjugate precursors. Since these aroma compounds can be released by hydrolysis, different glycosidase enzymes can potentially contribute different aromas to wines. In this paper, the effects of crude and purified Candida easanensis JK8 β-glucosidases on wine aroma precursors of Muscat of Alexandria grape powder were investigated by GC/MS combined with stir bar sorptive extraction (SBSE). A total of 19 bound volatile compounds were identified, including phenols, terpenes, aldehyde, ester and alcohols. The concentrations of terpenes especially nerol and geraniol, and β-Damascenone, a C13-norisoprenoid, contributes flowery and slightly fruity aromas were significantly increased in enzyme treated. These results suggest the potential application of this yeast β-glucosidase as an aroma-enhancing enzyme in winemaking.
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Affiliation(s)
- Jantaporn Thongekkaew
- Faculty of Science, Department of Biological Science, Ubon-Ratchathani University , Ubon-Ratchathani , Thailand
| | - Tsutomu Fujii
- Quality and Evaluation Research Division, National Research Institute of Brewing , Hiroshima , Japan.,Graduate School of Biosphere Sciences, Hiroshima University , Higashi-hiroshima , Japan
| | - Kazuo Masaki
- Industrial Technology Center, Gifu Prefectural Government , Gifu , Japan
| | - Kazuya Koyama
- Analytical Research Division, National Research Institute of Brewing , Hiroshima , Japan
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14
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Aarthy M, Puhazhselvan P, Aparna R, George AS, Gowthaman MK, Ayyadurai N, Masaki K, Nakajima-Kambe T, Kamini NR. Growth associated degradation of aliphatic-aromatic copolyesters by Cryptococcus sp. MTCC 5455. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.03.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Karlas T, Petroff D, Sasso M, Fan JG, Mi YQ, de Lédinghen V, Kumar M, Lupsor-Platon M, Han KH, Cardoso AC, Ferraioli G, Chan WK, Wong VWS, Myers RP, Chayama K, Friedrich-Rust M, Beaugrand M, Shen F, Hiriart JB, Sarin SK, Badea R, Lee HW, Marcellin P, Filice C, Mahadeva S, Wong GLH, Crotty P, Masaki K, Bojunga J, Bedossa P, Keim V, Wiegand J. Impact of controlled attenuation parameter on detecting fibrosis using liver stiffness measurement. Aliment Pharmacol Ther 2018; 47:989-1000. [PMID: 29446106 DOI: 10.1111/apt.14529] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/19/2017] [Accepted: 01/01/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Liver fibrosis is often accompanied by steatosis, particularly in patients with non-alcoholic fatty liver disease (NAFLD), and its non-invasive characterisation is of utmost importance. Vibration-controlled transient elastography is the non-invasive method of choice; however, recent research suggests that steatosis may influence its diagnostic performance. Controlled Attenuation Parameter (CAP) added to transient elastography enables simultaneous assessment of steatosis and fibrosis. AIM To determine how to use CAP in interpreting liver stiffness measurements. METHODS This is a secondary analysis of data from an individual patient data meta-analysis on CAP. The main exclusion criteria for the current analysis were unknown aetiology, unreliable elastography measurement and data already used for the same research question. Aetiology-specific liver stiffness measurement cut-offs were determined and used to estimate positive and negative predictive values (PPV/NPV) with logistic regression as functions of CAP. RESULTS Two thousand and fifty eight patients fulfilled the inclusion criteria (37% women, 18% NAFLD/NASH, 42% HBV, 40% HCV, 51% significant fibrosis ≥ F2). Youden optimised cut-offs were only sufficient for ruling out cirrhosis (NPV of 98%). With sensitivity and specificity-optimised cut-offs, NPV for ruling out significant fibrosis was moderate (70%) and could be improved slightly through consideration of CAP. PPV for significant fibrosis and cirrhosis were 68% and 55% respectively, despite specificity-optimised cut-offs for cirrhosis. CONCLUSIONS Liver stiffness measurement values below aetiology-specific cut-offs are very useful for ruling out cirrhosis, and to a lesser extent for ruling out significant fibrosis. In the case of the latter, Controlled Attenuation Parameter can improve interpretation slightly. Even if cut-offs are very high, liver stiffness measurements are not very reliable for ruling in fibrosis or cirrhosis.
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16
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Penkhrue W, Sujarit K, Kudo T, Ohkuma M, Masaki K, Aizawa T, Pathom-Aree W, Khanongnuch C, Lumyong S. Amycolatopsis oliviviridis sp. nov., a novel polylactic acid-bioplastic-degrading actinomycete isolated from paddy soil. Int J Syst Evol Microbiol 2018. [PMID: 29517482 DOI: 10.1099/ijsem.0.002682] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel bioplastic-degrading actinomycete, strain SCM_MK2-4T, was isolated from paddy soil in Thailand. The 16S rRNA gene sequence showed that strain SCM_MK2-4T belonged to the genus Amycolatopsis, with the highest sequence similarity to Amycolatopsisazurea JCM 3275T (99.4 %), and was phylogenetically clustered with this strain along with Amycolatopsislurida JCM 3141T (99.3 %), A. japonica DSM 44213T (99.2 %), A. decaplanina DSM 44594T (99.0 %), A. roodepoortensis M29T (98.9 %), A. keratiniphilasubsp. nogabecina DSM 44586T (98.8 %), A. keratiniphilasubsp. keratiniphila DSM 44409T (98.5 %), A. orientalis DSM 40040T (98.4 %) and A. regifaucium GY080T (98.3 %). A combination of DNA-DNA hybridization results ranging from 42.8±3.2 to 66.2±1.4 % with the type strains of A. azurea and A. lurida and some different phenotypic characteristics indicated that the strain could be distinguished from its closest phylogenetic neighbours. Whole-cell hydrolysates of the strain were shown to contain meso-diaminopimelic acid, arabinose, galactose, glucose, ribose, mannose, rhamnose and xylose. The predominant menaquinone was MK-9(H4). The major cellular fatty acid profile consisted of iso-C15 : 0, iso-C16 : 0, summed feature 3 (C16 : 1ω7c and/or iso-C15 : 0 2OH) and C16 : 0. The polar lipid composition of the strain consisted of phosphatidyl-N-methylethylethanolamine, phosphatidylethanolamine, hydroxyphosphatidylethanolamine, phosphatidylglycerol, aminophospholipids, an unidentified phospholipid and two unidentified glycolipids. The G+C content of the genomic DNA was 68.2 mol%. On the basis of phylogenetic analyses, DNA-DNA hybridization experimentation and the phenotypic characteristics, it was concluded that strain SCM_MK2-4T represents a novel species of the genus Amycolatopsis, for which the name Amycolatopsis oliviviridis sp. nov. is proposed. The type strain is SCM_MK2-4T (=TBRC 7186T=JCM 32134T).
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Affiliation(s)
- Watsana Penkhrue
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Kanaporn Sujarit
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Takuji Kudo
- Japan Collection of Microorganisms, RIKEN BioResource Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - Moriya Ohkuma
- Japan Collection of Microorganisms, RIKEN BioResource Center, 3-1-1 Koyadai, Tsukuba, Ibaraki 305-0074, Japan
| | - Kazuo Masaki
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashihiroshima, Hiroshima 739-0046, Japan
| | - Tomoyasu Aizawa
- Faculty of Advanced Life Science, Hokkaido University, N10, W8, Kita-ku, Sapporo 060-0810, Japan.,Global Institution for Collaborative Research and Education, Hokkaido University, N10, W8, Kita-ku, Sapporo 060-0810, Japan
| | - Wasu Pathom-Aree
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chartchai Khanongnuch
- Division of Biotechnology, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.,Science and Technology Research Institute, Chiang Mai University, Chiang Mai 50200, Thailand
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17
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Mochimaru T, Fukunaga K, Miyata J, Matsusaka M, Masaki K, Kabata H, Ueda S, Suzuki Y, Goto T, Urabe D, Inoue M, Isobe Y, Arita M, Betsuyaku T. 12-OH-17,18-Epoxyeicosatetraenoic acid alleviates eosinophilic airway inflammation in murine lungs. Allergy 2018; 73:369-378. [PMID: 28857178 DOI: 10.1111/all.13297] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND Asthma is characterized by airway inflammation and obstruction with eosinophil infiltration into the airway. Arachidonic acid, an omega-6 fatty acid, is metabolized into cysteinyl leukotriene with pro-inflammatory properties for allergic inflammation, whereas the omega-3 fatty acid eicosapentaenoic acid (EPA) and its downstream metabolites are known to have anti-inflammatory effects. In this study, we investigated the mechanism underlying the counter-regulatory roles of EPA in inflamed lungs. METHODS Male C57BL6 mice were sensitized and challenged by ovalbumin (OVA). After EPA treatment, we evaluated the cell count of Bronchoalveolar lavage fluid (BALF), mRNA expressions in the lungs by q-PCR, and the amounts of lipid mediators by liquid chromatography-tandem mass spectrometry (LC-MS/MS)-based lipidomics. We investigated the effect of the metabolite of EPA by in vivo and in vitro studies. RESULTS Eicosapentaenoic acid treatment reduced the accumulation of eosinophils in the airway and decreased mRNA expression of selected inflammatory mediators in the lung. Lipidomics clarified the metabolomic profile in the lungs. Among EPA-derived metabolites, 12-hydroxy-17,18-epoxyeicosatetraenoic acid (12-OH-17,18-EpETE) was identified as one of the major biosynthesized molecules; the production of this molecule was amplified by EPA administration and allergic inflammation. Intravenous administration of 12-OH-17,18-EpETE attenuated airway eosinophilic inflammation through downregulation of C-C chemokine motif 11 (CCL11) mRNA expression in the lungs. In vitro, this molecule also inhibited the release of CCL11 from human airway epithelial cells stimulated with interleukin-4. CONCLUSION These results demonstrated that EPA alleviated airway eosinophilic inflammation through its conversion into bioactive metabolites. Additionally, our results suggest that 12-OH-17,18-EpETE is a potential therapeutic target for the management of asthma.
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Affiliation(s)
- T. Mochimaru
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - K. Fukunaga
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - J. Miyata
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - M. Matsusaka
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - K. Masaki
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - H. Kabata
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - S. Ueda
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - Y. Suzuki
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
| | - T. Goto
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
- Pharmaceutical Research Center; Shionogi & Co. Ltd.; Osaka Japan
| | - D. Urabe
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
| | - M. Inoue
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Tokyo Japan
| | - Y. Isobe
- Laboratory for Metabolomics; RIKEN Center for Integrative Medical Sciences; Kanagawa Japan
| | - M. Arita
- Laboratory for Metabolomics; RIKEN Center for Integrative Medical Sciences; Kanagawa Japan
- Graduate School of Medical Life Science; Yokohama City University; Kanagawa Japan
- Division of Physiological Chemistry and Metabolism; Keio University Faculty of Pharmacy; Tokyo Japan
| | - T. Betsuyaku
- Division of Pulmonary Medicine; Department of Medicine; Keio University School of Medicine; Tokyo Japan
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18
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Guzailiayi M, Shinoda K, Nakamura Y, Masaki K, Matsushita T, Yamasaki R, Yoshikai Y, Kira J. Derangement of gamma deltaγδ t cell subsets is associated with disease severity of multiple sclerosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Shinoda K, Matsushita T, Nakamura Y, Masaki K, Yamasaki R, Togao O, Hiwatashi A, Kira J. HLA–DRB1*04:05 is associated with intracortical lesions on 3-dimensional double inversion recovery imaging in Japanese patients with multiple sclerosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Une H, Yamaguchi H, Zhao Y, Shinoda K, Masaki K, Götz M, Yamasaki R, Kira J. Experimental autoimmune encephalomyelitis is ameliorated in mice with gray matter astroglia-specific inducible connexin 43 knock-out. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Tanabe T, Miyasaka K, Sugiyama K, Masaki K, Kodama K, Miya N. Surface Distribution of Tritium on Graphite Tiles of Divertor Area in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a22710] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Tanabe
- Center for Integrated Research in Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan, +81-52-789-5157
| | - K. Miyasaka
- Department of Nuclear Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan +81-52-789-5158
| | - K. Sugiyama
- Department of Nuclear Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan +81-52-789-5158
| | - K. Masaki
- Department of Fusion Facilities, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan +81-29-270-7430
| | - K. Kodama
- Department of Fusion Facilities, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan +81-29-270-7430
| | - N. Miya
- Department of Fusion Facilities, Japan Atomic Energy Research Institute, Naka-machi, Naka-gun, Ibaraki 311-0193, Japan +81-29-270-7430
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22
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Utashima Y, Yamashita S, Arima TH, Masaki K. Codon optimization enables the Zeocin resistance marker's use in the ascomycete yeast Debaryomyces occidentalis. J GEN APPL MICROBIOL 2017; 63:254-257. [PMID: 28747584 DOI: 10.2323/jgam.2016.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yuu Utashima
- Tsuruga Institute of Biotechnology, Toyobo Co., Ltd
| | - Satoshi Yamashita
- Faculty of Life and Environmental Science, Prefectural University of Hiroshima
| | - Toshi-Hide Arima
- Faculty of Life and Environmental Science, Prefectural University of Hiroshima
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23
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Penkhrue W, Kanpiengjai A, Khanongnuch C, Masaki K, Pathom-Aree W, Punyodom W, Lumyong S. Effective enhancement of polylactic acid-degrading enzyme production by Amycolatopsis sp. strain SCM_MK2-4 using statistical and one-factor-at-a-time approaches. Prep Biochem Biotechnol 2017; 47:730-738. [PMID: 28414263 DOI: 10.1080/10826068.2017.1315597] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Watsana Penkhrue
- Department of Biology, Faculty of Science, Chiang Mai University, Muang District, Chiang Mai, Thailand
| | - Apinun Kanpiengjai
- Division of Biotechnology, School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Muang District, Chiang Mai, Thailand
- Department of Chemistry, Faculty of Science, Chiang Mai University, Muang District, Chiang Mai, Thailand
| | - Chartchai Khanongnuch
- Division of Biotechnology, School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Muang District, Chiang Mai, Thailand
| | - Kazuo Masaki
- National Research Institute of Brewing, Higashihiroshima, Hiroshima, Japan
| | - Wasu Pathom-Aree
- Department of Biology, Faculty of Science, Chiang Mai University, Muang District, Chiang Mai, Thailand
| | - Winita Punyodom
- Department of Chemistry, Faculty of Science, Chiang Mai University, Muang District, Chiang Mai, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Muang District, Chiang Mai, Thailand
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24
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Hirohata Y, Shibahara T, Tanabe T, Oya Y, Arai T, Gotoh Y, Masaki K, Yagyu J, Oyaidzu M, Okuno K, Nishikawa M, Miya N. Retention of Hydrogen Isotopes in Divertor Tiles Used in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a986] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Hirohata
- Hokkaido University, Sapporo, 060-8628 Japan
| | - T. Shibahara
- Nagoya University, Chikusa-ku, Nagoya, 464-8603 Japan
| | - T. Tanabe
- Nagoya University, Chikusa-ku, Nagoya, 464-8603 Japan
| | - Y. Oya
- The University of Tokyo, Bunkyo-ku, Tokyo, 113-0032 Japan,
| | - T. Arai
- Japan Atomic Energy Research Institute, Naka-gun, Ibaraki, 311-0913 Japan
| | - Y. Gotoh
- Japan Atomic Energy Research Institute, Naka-gun, Ibaraki, 311-0913 Japan
| | - K. Masaki
- Japan Atomic Energy Research Institute, Naka-gun, Ibaraki, 311-0913 Japan
| | - J. Yagyu
- Japan Atomic Energy Research Institute, Naka-gun, Ibaraki, 311-0913 Japan
| | - M. Oyaidzu
- Shizuoka University, Ohya, Shizuoka 422-8529, Japan
| | - K. Okuno
- Shizuoka University, Ohya, Shizuoka 422-8529, Japan
| | - M. Nishikawa
- Kyusyu University, Higashi-ku, Fukuoka,812-8581, Japan
| | - N. Miya
- Japan Atomic Energy Research Institute, Naka-gun, Ibaraki, 311-0913 Japan
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25
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Hosogane N, Ninomiya H, Matsukawa M, Ando T, Neyatani Y, Horiike H, Sakurai S, Masaki K, Yamamoto M, Kodama K, Sasajima T, Terakado T, Ohmori S, Ohmori Y, Okano J. Development and Operational Experiences of the JT-60U Tokamak and Power Supplies. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- N. Hosogane
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - H. Ninomiya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Matsukawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Ando
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Neyatani
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - H. Horiike
- Osaka University, Faculty of Engineering, 2-1 Yamadaoka, Suita-shi, Osaka-fu 565-0871, Japan
| | - S. Sakurai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Masaki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Yamamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Kodama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Sasajima
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Terakado
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - S. Ohmori
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Ohmori
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
| | - J. Okano
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801 Mukouyama, Naka-machi Naka-gun, Ibaraki-ken 311-0193, Japan
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26
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Kizu K, Hiratsuka H, Miyo Y, Ichige H, Sasajima T, Nishiyama T, Masaki K, Honda M, Miya N, Hosogane N. Gas and Pellet Injection Systems for JT-60 and JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Kizu
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - H. Hiratsuka
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - Y. Miyo
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - H. Ichige
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - T. Sasajima
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - T. Nishiyama
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - K. Masaki
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - M. Honda
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - N. Miya
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - N. Hosogane
- Japan Atomic Energy Research Institute Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
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27
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Masaki K, Yagyu J, Arai T, Kaminaga A, Kodama K, Miya N, Ando T, Hiratsuka H, Saidoh M. Wall Conditioning and Experience of the Carbon-Based First Wall in JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a235] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Masaki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - J. Yagyu
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Arai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - A. Kaminaga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Kodama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Miya
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Ando
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - H. Hiratsuka
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801 Mukouyama, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Saidoh
- Japan Atomic Energy Research Institute, Advanced Radiation Technology Center Takasaki Radiation Chemistry Research Establishment, 1233 Watanuki Takasaki-shi, Gunma-ken 370-1292, Japan
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Shinoda K, Iwata T, Nakamura Y, Masaki K, Matsushita T, Yamasaki R, Kira JI. Minocycline-induced human herpesvirus 6 encephalomyelitis with drastically disseminated contrast-enhanced lesions. Eur J Neurol 2016; 23:e76-e77. [PMID: 27882729 DOI: 10.1111/ene.13190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 09/16/2016] [Indexed: 11/27/2022]
Affiliation(s)
- K Shinoda
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Iwata
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Y Nakamura
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - K Masaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - T Matsushita
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - R Yamasaki
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - J-I Kira
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Bell CL, Lopez RP, Mahendra N, Tamai A, Davis J, Amella EJ, Masaki K. Person-centered Feeding Care: A Protocol to Re-introduce Oral Feeding for Nursing Home Patients with Tube Feeding. J Nutr Health Aging 2016; 20:621-7. [PMID: 27273351 DOI: 10.1007/s12603-016-0699-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Although the literature on nursing home (NH) patients with tube feeding (TF) has focused primarily on the continuation vs. discontinuation of TF, the reassessment of these patients for oral feeding has been understudied. Re-assessing patients for oral feeding may be better received by families and NH staff than approaches focused on stopping TF, and may provide an opportunity to address TF in less cognitively impaired patients as well as those with end-stage conditions. However, the literature contains little guidance on a systematic interdisciplinary team approach to the oral feeding reassessment of patients with TF, who are admitted to NHs. METHODS This project had two parts that were conducted in one 170-bed intermediate/skilled, Medicare-certified NH in Honolulu, Hawai'i. Part 1 consisted of a retrospective observational study of characteristics of TF patients versus non-tube fed patients at NH admission (2003-2006) and longitudinal follow-up (through death or 6/30/2011) with usual care of the TF patients for outcomes of: feeding and swallowing reassessment, goals of care reassessment, feeding status (TF and/or per oral (PO) feedings), and hospice status. Part 2 involved the development of an interdisciplinary TF reassessment protocol through working group discussions and a pilot test of the protocol on a new set of patients admitted with TF from 2011-2014. RESULTS Part 1: Of 238 admitted patients, 13.4% (32/238) had TF. Prior stroke and lack of DNR status was associated with increased likelihood of TF. Of the 32 patients with TF at NH admission, 15 could communicate and interact (mild, moderate or no cognitive impairment with prior stroke or pneumonia); while 17 were nonverbal and/or bedbound patients (advanced cognitive impairment or terminal disease). In the more cognitively intact group, 9/15 (60%) were never reassessed for tolerance of oral diets and 10/15 (66.7%) remained with TF without any oral feeding until death. Of the end-stage group, 13/17 (76.5%) did not have goals of care reassessed and remained with TF without oral feeding until death. Part 2: The protocol pilot project included all TF patients admitted to the facility in 2011-2014 (N=33). Of those who were more cognitively intact (n=22), 21/22 (95.5%) had swallowing reassessed, 11/22 (50%) resumed oral feedings but 11 (50%) failed reassessment and continued exclusive TF. Of those with end-stage disease (n=11), 100% had goals of care reassessed and 9 (81.8%) families elected individualized oral feeding (with or without TF). CONCLUSION Using findings from our retrospective study of usual care, our NH's interdisciplinary team developed and pilot-tested a protocol that successfully reintroduced oral feedings to tube-fed NH patients who previously would not have resumed oral feeding.
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Affiliation(s)
- C L Bell
- Christina L. Bell, MD, PhD, Department of Geriatric Medicine, University of Hawaii John A. Burns School of Medicine, 347 N. Kuakini St. HPM 9, Honolulu HI 96817, Phone: 8085238461, Fax: 8085281897,
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El-Saed A, Masaki K, Okamura T, Evans RW, Nakamura Y, Willcox BJ, Lee S, Maegawa H, Seto TB, Choo J, Fujiyoshi A, Miura K, Kuller LH, Ueshima H, Sekikawa A. The Associations of C-Reactive Protein with Serum Levels of Polyunsaturated Fatty Acids and Trans Fatty Acids Among Middle-Aged Men from Three Populations. J Nutr Health Aging 2016; 20:16-21. [PMID: 26728928 DOI: 10.1007/s12603-016-0670-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND C-reactive protein (CRP) and many fatty acids (FAs) have been linked to cardiovascular disease. Associations of serum CRP with FAs in different populations have not been established. METHODS Participants were 926 men aged 40-49 (2002-2006) from a population-based sample; 310 Whites from Pennsylvania, U.S., 313 Japanese from Shiga, Japan, and 303 Japanese Americans from Hawaii, U.S. Serum CRP (mg/L) was measured using immunosorbent assay while serum FAs (%) were measured using capillary-gas-liquid chromatography. RESULTS Whites had CRP (mg/L) levels higher than Japanese with Japanese Americans in-between (age-adjusted geometric mean "GM" 0.96, 0.38, 0.66, respectively). Whites had also higher levels of total n-6 FAs (%) and trans fatty acids (TFAs) but lower levels of marine-derived n-3 FAs compared to Japanese (41.78 vs. 35.05, 1.04 vs. 0.58, and 3.85 vs. 9.29, respectively). Japanese Americans had FAs levels in-between the other two populations. Whites had significant inverse trends between CRP and tertiles of total n-6 FAs (GM 1.20, 0.91 and 0.80; p=0.002) and marine-derived n-3 FAs (GM 1.22, 1.00 and 0.72; p<0.001) but a significant positive trend with TFAs (GM 0.80, 0.95 and 1.15; p=0.007). Japanese had a significant inverse trend between CRP and only total n-6 FAs (GM 0.50, 0.35 and 0.31; p<0.001). Japanese Americans had CRP associations with n-3 FAs, n-6 FAs, and TFAs similar to but weaker than Whites. CONCLUSIONS With the exception of consistent inverse association of CRP with total n-6 FAs, there are considerable variations across the three populations in the associations of CRP with different FAs.
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Affiliation(s)
- A El-Saed
- Akira Sekikawa MD, PhD, PhD, Associate Professor of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 130 North Bellefield Avenue, Suite 546, Pittsburgh, PA, 15213, Phone: +1-412-624-3225, Fax: +1-412-383-1956
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Penkhrue W, Khanongnuch C, Masaki K, Pathom-Aree W, Punyodom W, Lumyong S. Isolation and screening of biopolymer-degrading microorganisms from northern Thailand. World J Microbiol Biotechnol 2015; 31:1431-42. [PMID: 26135516 DOI: 10.1007/s11274-015-1895-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 06/24/2015] [Indexed: 10/23/2022]
Abstract
Forty agricultural soils were collected from Chiang Mai and Lampang provinces in northern Thailand. Bacteria, actinomycetes and fungi were isolated and screened for their ability to degrade polylactic acid (PLA), polycaprolactone (PCL) and poly(butylene succinate) (PBS) by the agar diffusion method. Sixty-seven actinomycetes, seven bacteria and five fungal isolates were obtained. The majority of actinomycetes were Streptomyces based on morphological characteristic, chemotaxonomy and 16S rRNA gene data. Seventy-nine microorganisms were isolated from 40 soil samples. Twenty-six isolates showed PLA-degradation (32.9 %), 44 isolates showed PBS-degradation (55.7 %) and 58 isolates showed PCL-degradation (73.4 %). Interestingly, 16 isolates (20.2 %) could degrade all three types of bioplastics used in this study. The Amycolatopsis sp. strain SCM_MK2-4 showed the highest enzyme activity for both PLA and PCL, 0.046 and 0.023 U/mL, respectively. Moreover, this strain produced protease, esterase and lipase on agar plates. Approximately, 36.7 % of the PLA film was degraded by Amycolatopsis sp. SCM_MK2-4 after 7 days of cultivation at 30 °C in culture broth.
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Affiliation(s)
- Watsana Penkhrue
- Department of Biology, Faculty of Science, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand,
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El-Saed A, Masaki K, Okamura T, Evans RW, Nakamura Y, Willcox BJ, Lee S, Maegawa H, Seto TB, Choo J, Fujiyoshi A, Miura K, Kuller LH, Ueshima H, Sekikawa A. The associations of C-reactive protein with serum levels of polyunsaturated fatty acids and trans fatty acids among middle-aged men from three populations. J Nutr Health Aging 2015. [DOI: 10.1007/s12603-015-0551-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abner EL, Schmitt FA, Nelson PT, Lou W, Wan L, Gauriglia R, Dodge HH, Woltjer RL, Yu L, Bennett DA, Schneider JA, Chen R, Masaki K, Katz MJ, Lipton RB, Dickson DW, Lim KO, Hemmy LS, Cairns NJ, Grant E, Tyas SL, Xiong C, Fardo DW, Kryscio RJ. The Statistical Modeling of Aging and Risk of Transition Project: Data Collection and Harmonization Across 11 Longitudinal Cohort Studies of Aging, Cognition, and Dementia. Obs Stud 2015; 1:56-73. [PMID: 25984574 PMCID: PMC4431579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Longitudinal cognitive trajectories and other factors associated with mixed neuropathologies (such as Alzheimer's disease with co-occurring cerebrovascular disease) remain incompletely understood, despite being the rule and not the exception in older populations. The Statistical Modeling of Aging and Risk of Transition study (SMART) is a consortium of 11 different high-quality longitudinal studies of aging and cognition (N=11,541 participants) established for the purpose of characterizing risk and protective factors associated with subtypes of age-associated mixed neuropathologies (N=3,001 autopsies). While brain donation was not required for participation in all SMART cohorts, most achieved substantial autopsy rates (i.e., > 50%). Moreover, the studies comprising SMART have large numbers of participants who were followed from intact cognition and transitioned to cognitive impairment and dementia, as well as participants who remained cognitively intact until death. These data provide an exciting opportunity to apply sophisticated statistical methods, like Markov processes, that require large, well-characterized samples. Thus, SMART will serve as an important resource for the field of mixed dementia epidemiology and neuropathology.
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Affiliation(s)
- E L Abner
- Snders-Brown Center on Aging, University of Kentucky
| | - F A Schmitt
- Oregon Center for Aging & Technology, Oregon Health & Science University
| | - P T Nelson
- Rush Alzheimer's Disease Center, Rush University Medical Center
| | | | - L Wan
- Department of Neurology, Albert Einstein College of Medicine
| | - R Gauriglia
- Department of Laboratory Medicine & Pathology, Mayo Clinic Jacksonville
| | - H H Dodge
- Department of Psychiatry, University of Minnesota
| | - R L Woltjer
- Alzheimer's Disease Research Center, Washington University
| | - L Yu
- School of Public Health and Health Systems, University of Waterloo
| | - D A Bennett
- College of Public Health, University of Kentucky
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Mukai N, Masaki K, Fujii T, Iefuji H. Corrigendum to “Single nucleotide polymorphisms of PAD1 and FDC1 show a positive relationship with ferulic acid decarboxylation ability among industrial yeasts used in alcoholic beverage production” [Journal of Bioscience and Bioengineering 118 (2014) 50–55]. J Biosci Bioeng 2014. [DOI: 10.1016/j.jbiosc.2014.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Morioka A, Sato S, Ochiai K, Sakasai A, Hori J, Yamauchi M, Nishitani T, Kaminaga A, Masaki K, Sakurai S, Hayashi T, Matsukawa M, Tamai H, Ishida S. Neutron Tranamission Experiment of Boron-doped Resin for the JT-60SC Neutron Shield using 2.45 Mev Neutron Source. J NUCL SCI TECHNOL 2014. [DOI: 10.1080/00223131.2004.10875657] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Utashima Y, Matsumoto H, Masaki K, Iefuji H. Heterologous production of horseradish peroxidase C1a by the basidiomycete yeast Cryptococcus sp. S-2 using codon and signal optimizations. Appl Microbiol Biotechnol 2014; 98:7893-900. [DOI: 10.1007/s00253-014-5856-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/12/2014] [Accepted: 05/19/2014] [Indexed: 10/25/2022]
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Yamanouchi T, Matsuda H, Ohtake M, Masaki K, Horiguchi E, Aikawa Y, Hashiyada Y, Imai K. 141 SUPERIORITY OF FEMALE EMBRYO PRODUCTION SYSTEM BY IN VIVO-MATURED OOCYTE AND X-SORTED SPERM IN BROWN SWISS COWS. Reprod Fertil Dev 2014. [DOI: 10.1071/rdv26n1ab141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Embryo transfer using a female embryo is an effective tool for offspring production on dairy industry; however, embryo production by embryo recovery (ER) using X-sorted semen is not sufficient because non-fertilized oocytes are recovered frequently. In Holstein cows, we developed a system for high blastocyst production that was performed by IVF using X-sorted sperm and in vivo-matured oocytes obtained by ovum pickup (OPU) after superstimulation. The purpose of this study was to adjust this system to Brown Swiss cows, comparing between ER and embryo production from oocytes derived from OPU with or without superstimulation. In the ER group, cows (n = 10) received a CIDR (Day 0) and 2 mg of oestradiol-benzoate on Day 1. A total of 30 Armour Units of FSH were injected into cows twice a day, with decreasing doses from the evening of Day 5 to the morning of Day 9. On the evening of Day 7 or 8, 0.75 mg of prostaglandin F2α (cloprostenol) was injected. The CIDR was removed on Day 8 or 9 and 0.2 mg of gonadotropin-releasing hormone (GnRH; fertirelin acetate) were injected on Day 9 or 10. At oestrus, AI was carried out twice, 12 h apart, with a total of 4 straws of X-sorted semen per cow. In the OPU group, cows (n = 7) were subjected to OPU without any pretreatment, collected immature oocytes were in vivo matured for 20 to 22 h, followed by IVF using X-sorted sperm for 6 h; then, presumptive zygotes were in vitro cultured (IVC) for 9 days. In the in vivo-matured oocyte group (matured group), a CIDR was inserted (Day 0) in cows (n = 4), all follicles larger than 8 mm were removed on Day 5. Administration of FSH, prostaglandin F2α, and GnRH, as well as withdrawal of CIDR, were performed as in the ER group. In vivo-matured oocytes were collected from follicles larger than 5 mm by OPU at 25 to 26 h following GnRH injection; collected oocytes with expanded cumulus cells were fertilized with X-sorted sperm 30 h after GnRH. After 6 h of IVF, presumptive zygotes were transferred to in vitro culture, as in the OPU group. Data were compared among 3 groups; the ER group was analysed for number of CL, collected embryos, and normal embryos, against the number of aspirated follicles, collected oocytes used for IVF, and formed blastocysts in the OPU and matured groups, respectively, by Tukey-kramer test after ANOVA. There were no differences between the number of CL in the ER group and the number of follicles in the OPU and matured groups (16.4 ± 5.3 v. 31.6 ± 22.7 v. 18.5 ± 4.7, mean ± s.d., respectively). Also the number of collected embryos in the ER group and number of oocytes for IVF in the OPU and matured groups (12.8 ± 7.6 v. 14.9 ± 11.8 v. 17.8 ± 7.7, respectively) was similar. However, the number of blastocysts in the matured group (13.0 ± 5.9; P < 0.01) was higher than that in the OPU group (3.0 ± 2.2) and in the ER group (2.8 ± 3.7). For female embryo production in Brown Swiss cows using X-sorted sperm, the system of IVF with in vivo matured oocytes obtained by OPU is more effective than ER or OPU without pretreatment.
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Takahashi M, Masaki K, Mizuno A, Goto-Yamamoto N. Modified COLD-PCR for detection of minor microorganisms in wine samples during the fermentation. Food Microbiol 2013; 39:74-80. [PMID: 24387855 DOI: 10.1016/j.fm.2013.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 10/10/2013] [Accepted: 11/12/2013] [Indexed: 10/26/2022]
Abstract
The detection of low-abundant microorganism is difficult when in a sample in which a specific microorganism represents an overwhelming majority using polymerase chain reaction (PCR)-based methods. A modified CO-amplification at Lower Denaturation temperature PCR (mCOLD-PCR) method was developed to detect low-abundant microorganisms using a double-strand RNA probe to inhibit the amplification of the sequence of a major microorganism. Combining the mCOLD-PCR and downstream application (e.g., denaturing gradient gel electrophoresis (DGGE) and next-generation sequencing (NGS)), low-abundant microorganisms were detected more efficiently, even when a specific microorganism represents an overwhelming majority of the sample. We demonstrated that mCOLD-PCR-DGGE enabled us to detect Schizosaccharomyces pombe in a model sample coexisting with 10,000 times as many Saccharomyces cerevisiae. When mCOLD-PCR-DGGE was applied in the microbiota analysis of a fermenting white wine, Candida sp. and Cladosporium sp., which were not detected by conventional PCR, were detected. According to the NGS analysis after mCOLD-PCR of a fermenting red wine, the detection ratio of Saccharomyces was decreased dramatically, and the detection ratios of other microorganisms and the numbers of genera detected were increased compared with the conventional PCR. Thus, the application of mCOLD-PCR will reveal comprehensive microbiota of fermented foods, beverages, and so on.
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Affiliation(s)
- Masayuki Takahashi
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-Hiroshima 739-0046, Japan.
| | - Kazuo Masaki
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-Hiroshima 739-0046, Japan
| | - Akihiro Mizuno
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-Hiroshima 739-0046, Japan
| | - Nami Goto-Yamamoto
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-Hiroshima 739-0046, Japan
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Takahashi M, Ohta T, Masaki K, Mizuno A, Goto-Yamamoto N. Evaluation of microbial diversity in sulfite-added and sulfite-free wine by culture-dependent and -independent methods. J Biosci Bioeng 2013; 117:569-75. [PMID: 24239025 DOI: 10.1016/j.jbiosc.2013.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 09/25/2013] [Accepted: 10/15/2013] [Indexed: 10/26/2022]
Abstract
The difference in microbiota including non-lactic acid bacteria, non-acetic acid bacteria, and wild yeast during winemaking and in the end-products between sulfite-added and sulfite-free wine, was investigated using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and a culture-dependent method. There were differences between the microorganisms detected by PCR-DGGE and those detected by the culture-dependent method, probably because of the selectivity of culture medium and the characteristics of PCR-based method. In both the red wine and white wine, the microbial diversity of the sulfite-added wine was lower than that of the sulfite-free wine during fermentation. Tatumella terrea was detected from the fermenting must by PCR-DGGE and by the culture-dependent method, even though sulfite inhibited its growth to some extent. We confirmed that the addition of sulfite plays an important role in winemaking by inhibiting the growth of unexpected microorganisms, but on the other hand, it was revealed that some microorganisms can survive and grow in sulfite-added fermenting must. We also analyzed 15 samples of commercial wines by the PCR-DGGE method and detected various microorganisms. Among them, Sphingomonas sp., Pseudozyma sp., Ochromonas sp. and Methylophilus sp. were found for the first time in wine as far as we know. We did not identify a specific microorganism that was detected only from wines without sulfite addition. Thus, the microbiota of end-products seemed to be influenced by other factors, such as filtration before bottling, the production equipment and the storage environment.
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Affiliation(s)
- Masayuki Takahashi
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-0046, Japan.
| | - Tami Ohta
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-0046, Japan
| | - Kazuo Masaki
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-0046, Japan
| | - Akihiro Mizuno
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-0046, Japan
| | - Nami Goto-Yamamoto
- National Research Institute of Brewing (NRIB), 3-7-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-0046, Japan
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Shibanuma K, Arai T, Hasegawa K, Hoshi R, Kamiya K, Kawashima H, Kubo H, Masaki K, Saeki H, Sakurai S, Sakata S, Sakasai A, Sawai H, Shibama Y, Tsuchiya K, Tsukao N, Yagyu J, Yoshida K, Kamada Y, Mizumaki S, Hayakawa A, Takigami H, Barabaschi P, Davis S, Peyrot M, Phillips G. Assembly study for JT-60SA tokamak. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2012.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Shibama Y, Masaki K, Sakurai S, Shibanuma K, Sakasai A, Oonawa T, Araki T, Asano S. Welding technology R&D on port joint of JT-60SA vacuum vessel. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.01.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Saito Y, Okayama H, Masaki K, Ninomiya S, Endo Y, Morikawa S. Positional changes of pelvic organs from 2 months to 1 year after the delivery: evaluation with an open configuration MR system. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ninomiya S, Masaki K, Saito Y, Morikawa S, Endo Y, Okayama H. Voluntary contraction of the pelvic floor muscles measured by magnetic resonance images in a sitting posture and factors responsible for pelvic relaxation. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.1536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wakai S, Kidokoro SI, Masaki K, Nakasone K, Sambongi Y. Constant enthalpy change value during pyrophosphate hydrolysis within the physiological limits of NaCl. J Biol Chem 2013; 288:29247-51. [PMID: 23965994 DOI: 10.1074/jbc.m113.502963] [Citation(s) in RCA: 4] [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] [Indexed: 11/06/2022] Open
Abstract
A decrease in water activity was thought to result in smaller enthalpy change values during PPi hydrolysis, indicating the importance of solvation for the reaction. However, the physiological significance of this phenomenon is unknown. Here, we combined biochemistry and calorimetry to solve this problem using NaCl, a physiologically occurring water activity-reducing reagent. The pyrophosphatase activities of extremely halophilic Haloarcula japonica, which can grow at ∼4 M NaCl, and non-halophilic Escherichia coli and Saccharomyces cerevisiae were maximal at 2.0 and 0.1 M NaCl, respectively. Thus, halophilic and non-halophilic pyrophosphatases exhibit distinct maximal activities at different NaCl concentration ranges. Upon calorimetry, the same exothermic enthalpy change of -35 kJ/mol was obtained for the halophile and non-halophiles at 1.5-4.0 and 0.1-2.0 M NaCl, respectively. These results show that solvation changes caused by up to 4.0 M NaCl (water activity of ∼0.84) do not affect the enthalpy change in PPi hydrolysis. It has been postulated that PPi is an ATP analog, having a so-called high energy phosphate bond, and that the hydrolysis of both compounds is enthalpically driven. Therefore, our results indicate that the hydrolysis of high energy phosphate compounds, which are responsible for biological energy conversion, is enthalpically driven within the physiological limits of NaCl.
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Affiliation(s)
- Satoshi Wakai
- From the Graduate School of Biosphere Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan
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Yoshida M, Tanabe T, Hayashi T, Nakano T, Fukumoto M, Yagyu J, Miyo Y, Masaki K, Itami K. Hydrogen Isotopes Retention in Gaps at the JT-60U First Wall Tiles. Fusion Science and Technology 2013. [DOI: 10.13182/fst13-a16957] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Yoshida
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - T. Tanabe
- Kyushu Univ. 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - T. Hayashi
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - T. Nakano
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - M. Fukumoto
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - J. Yagyu
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - Y. Miyo
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - K. Masaki
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
| | - K. Itami
- JAEA, 801-1, Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
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Thongekkaew J, Ikeda H, Masaki K, Iefuji H. Fusion of cellulose binding domain from Trichoderma reesei CBHI to Cryptococcus sp. S-2 cellulase enhances its binding affinity and its cellulolytic activity to insoluble cellulosic substrates. Enzyme Microb Technol 2013; 52:241-6. [DOI: 10.1016/j.enzmictec.2013.02.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 02/04/2013] [Accepted: 02/04/2013] [Indexed: 11/24/2022]
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Abstract
The heterologous expression of the laccase gene from Trametes versicolor and Gaeumannomyces graminis was evaluated in the yeasts Pichia pastoris and Cryptococcus sp. S-2. The expression levels of both laccase genes in Cryptococcus sp. S-2 were considerably higher than those in P. pastoris. The codon usage of Cryptococcus sp. S-2 as well as the GC content were similar to those of T. versicolor and G. graminis. These results suggest that using a host with a similar codon usage for the expressed gene may improve protein expression. The use of Cryptococcus sp. S-2 as a host may be advantageous for the heterologous expression of genes with high GC content. Moreover, this yeast provides the same advantages as P. pastoris for the production of recombinant proteins, such as growth on minimal medium, capacity for high-density growth during fermentation, and capability for post-translational modifications. Therefore, we propose that Cryptococcus sp. S-2 be used as an expression host to improve enzyme production levels when other hosts have not yielded good results.
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Affiliation(s)
- Nahoko Nishibori
- National Research Institute of Brewing, Kagamiyama, Higashi-Hiroshima, Japan
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Ishiyama H, Satoh T, Kitano M, Tabata K, Kotani S, Masaomi I, Shinji K, Masaki K, Baba S, Hayakawa K. High-dose-rate (HDR) Brachytherapy and Hypofractionated External Beam Radiation Therapy Combined With Long-term Hormonal Therapy for High-risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Okayama H, Masaki K, Saito Y, Tsuchikawa S, Terasaka T, Mori M, Arai Y, Kuwata H. W357 RELATIONSHIP BETWEEN DEPRESSION IN PRIMIGRAVIDAS AND THEIR MOTHERS - COMPARISON BY SEVERE AND MILD DEPRESSION GROUPS. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)62080-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ross W, Duda J, Abbott R, Petrovitch H, Tanner C, Masaki K, Uyehara-Lock J, Launer L, White L. Association of Coffee and Caffeine Consumption with Brain Lewy Pathology in the Honolulu-Asia Aging Study (S42.005). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.s42.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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