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Ogawa M, Saito A, Karukivi M, Lahti S. Associations of sensory sensitivity, pain catastrophizing, and alexithymia with dental anxiety. Eur J Oral Sci 2024; 132:e12973. [PMID: 38311805 DOI: 10.1111/eos.12973] [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: 06/08/2023] [Accepted: 12/27/2023] [Indexed: 02/06/2024]
Abstract
We aimed to reveal interrelationships between alexithymia, catastrophic thinking, sensory processing patterns, and dental anxiety among 460 participants who were registrants of a Japanese research company. Measures used were the Modified Dental Anxiety Scale, the Adult Sensory Profile, the Pain Catastrophizing Scale, and the 20-item Toronto Alexithymia Scale. The interrelationships among the constructs were analyzed using structural equation modeling, adjusting for age, gender, and negative dental treatment experience. Data from 428 participants were used in the analyses. Sensory sensitivity and pain catastrophizing were independently associated with anticipatory and treatment-related dental anxiety, while difficulty identifying feelings was not. In the mediation model, sensory sensitivity and pain catastrophizing served as full mediators between difficulty identifying feelings and the dimensions of dental anxiety (indirect effects were between 0.13 and 0.15). The strength of the associations was 0.55 from difficulty identifying feelings to both pain catastrophizing and sensory sensitivity, and between 0.24 and 0.26 to anticipatory and treatment-related dental anxiety. The association between trait-like phenomena, such as alexithymia, and dental anxiety may be mediated by neurophysiological and cognitive factors such as sensory sensitivity and pain catastrophizing. These findings could be crucial for new and innovative interventions for managing dental anxiety.
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Affiliation(s)
- Mika Ogawa
- Section of Anesthesiology, Department of Diagnostics and General Care, Fukuoka Dental College, Fukuoka, Japan
- Department of Community Dentistry, University of Turku, Turku, Finland
| | - Akihiro Saito
- Department of Business Administration, The University of Kitakyushu, Kitakyushu, Japan
| | - Max Karukivi
- Department of Adolescent Psychiatry, University of Turku and Turku University Hospital, Turku, Finland
| | - Satu Lahti
- Department of Community Dentistry, University of Turku, Turku, Finland
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Suzuki M, Saito A, Kobayashi M, Yokoyama T, Omiya S, Li J, Sugita K, Miki K, Saito JI, Ando A. Crystal structure of the GH-46 subclass III chitosanase from Bacillus circulans MH-K1 in complex with chitotetraose. Biochim Biophys Acta Gen Subj 2024; 1868:130549. [PMID: 38158023 DOI: 10.1016/j.bbagen.2023.130549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 12/12/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND Chitosanases (EC 3.2.1.132) hydrolyze chitosan which is a polymer of glucosamine (GlcN) linked by β - 1,4 bonds, and show cleavage specificity against partially acetylated chitosan containing N-acetylglucosamine (GlcNAc) residues. Chitosanases' structural underpinnings for cleavage specificity and the conformational switch from open to closed structures are still a mystery. METHODS The GH-46 subclass III chitosanase from Bacillus circulans MH-K1 (MH-K1 chitosanase), which also catalyzes the hydrolysis of GlcN-GlcNAc bonds in addition to GlcN-GlcN, has had its chitotetraose [(GlcN)4]-complexed crystal structure solved at 1.35 Å resolution. RESULTS The MH-K1 chitosanase's (GlcN)4-bound structure has numerous structural similarities to other GH-46 chitosanases in terms of substrate binding and catalytic processes. However, subsite -1, which is absolutely specific for GlcN, seems to characterize the structure of a subclass III chitosanase due to its distinctive length and angle of a flexible loop. According to a comparison of the (GlcN)4-bound and apo-form structures, the particular binding of a GlcN residue at subsite -2 through Asp77 causes the backbone helix to kink, which causes the upper- and lower-domains to approach closely when binding a substrate. CONCLUSIONS Although GH-46 chitosanases vary in the finer details of the subsites defining cleavage specificity, they share similar structural characteristics in substrate-binding, catalytic processes, and potentially in conformational change. GENERAL SIGNIFICANCE The precise binding of a GlcN residue to the -2 subsite is essential for the conformational shift that occurs in all GH-46 chitosanases, as shown by the crystal structures of the apo- and substrate-bound forms of MH-K1 chitosanase.
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Affiliation(s)
- Michihiko Suzuki
- Molecular Analysis Center, Research Unit, R&D Division, Kyowa Kirin, Sunto-gun, Shizuoka 411-8731, Japan
| | - Akihiro Saito
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan; Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, Fukuroi, Shizuoka 437-8555, Japan.
| | - Mariko Kobayashi
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Tomofumi Yokoyama
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Shoko Omiya
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Jian Li
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Kei Sugita
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
| | - Kunio Miki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Jun-Ichi Saito
- Molecular Analysis Center, Research Unit, R&D Division, Kyowa Kirin, Sunto-gun, Shizuoka 411-8731, Japan
| | - Akikazu Ando
- Department of Nanobiology, Graduate School of Advanced and Integration Science, Chiba University, Matsudo, Chiba 271-8510, Japan
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Nishiyama E, Nagata R, Ando A, Saito A. Edible plant oil (EPO)-consumption activity of the isolate Fusarium keratoplasticum EN01 and other relative Fusarium species. Antonie Van Leeuwenhoek 2024; 117:7. [PMID: 38170394 DOI: 10.1007/s10482-023-01901-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 10/07/2023] [Indexed: 01/05/2024]
Abstract
Edible oil is used in humans' daily lives, and the degradation of edible oil is a key process in sewage water treatment and in compost production from food wastes. In this study, a mixed microbial strain EN00, which showed high edible plant oil (EPO)-consumption activity, was obtained from soil via enrichment cultivation. A fungal strain EN01 was isolated from EN00 and relegated to Fusarium keratoplasticum, based on the nucleotide sequences of the TEF1-α gene. Strain EN01 eliminated more than 90% of hydrophobic compounds from the medium containing 1.0% (w/v) EPO within 10 days at 30 °C. The rate of consumption of EPO by EN01 was comparable with that of EN00, suggesting that EN01 was the main microorganism involved in the EPO-consumption ability of EN00. Strain EN01 efficiently utilized EPO as a sole carbon source. The EPO-consumption rate of EN01 was highest among six tested strains of Fusarium solani species complex (FSSC), while two FSSC strains of F. mori and F. cuneirostrum, whose phylogenetic relationships were relatively distant from EN01, had little EPO-eliminating activity. This data implies that the potent EPO-eliminating activity is not general in FSSC strains but is restricted to selected members of this complex. EN01 showed good growth at 25-30 °C, in media with an initial pH of 4-10, and in the presence of 0-3% (w/v) sodium chloride. Although the safety including pathogenicity must be strictly evaluated, some FSSC strains including EN01 have potentials for use in the degradation and elimination of edible oil.
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Affiliation(s)
- Eiko Nishiyama
- Graduate School of Advanced Integration Science, Chiba University, Matsudo 648, Matsudo City, Chiba, 271-8510, Japan
| | - Ryo Nagata
- Graduate School of Advanced Integration Science, Chiba University, Matsudo 648, Matsudo City, Chiba, 271-8510, Japan
| | - Akikazu Ando
- Graduate School of Advanced Integration Science, Chiba University, Matsudo 648, Matsudo City, Chiba, 271-8510, Japan
| | - Akihiro Saito
- Graduate School of Advanced Integration Science, Chiba University, Matsudo 648, Matsudo City, Chiba, 271-8510, Japan.
- Department of Materials and Life Science, Faculty of Science and Technology, Shizuoka Institute of Science and Technology, Toyosawa 2200-2, Fukuroi, Shizuoka, 437-8555, Japan.
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Imano N, Kawahara D, Nishioka R, Koike K, Katsuta T, Hirokawa J, Saito A, Nishibuchi I, Murakami Y, Nagata Y. Predictive Modeling of Radiation Pneumonitis Induced by Chemoradiotherapy for Locally Advanced Non-Small Cell Lung Cancer Using Radiomics and Clinical Features. Int J Radiat Oncol Biol Phys 2023; 117:e26. [PMID: 37784995 DOI: 10.1016/j.ijrobp.2023.06.704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The purpose of this study is to establish a prediction model for the development of grade 2 or higher radiation pneumonitis (RP) using radiomics analysis of pretreatment CT images, PET images, and dose distribution, in addition to clinical factors, in patients with locally advanced non-small cell lung cancer (NSCLC) treated with radical chemoradiotherapy. MATERIALS/METHODS We retrospectively evaluated 128 cases of locally advanced NSCLC treated with radical radiotherapy at our institution from 2008 to 2021. Clinical factors included age, sex, performance status (PS), KL-6, smoking history, histological type, clinical stage, and total radiation dose. Radiomics analysis was performed by analyzing treatment planning CT images, PET images, and dose distribution, and Rad-score (Radiomics-score) was calculated for the extracted features using Lasso-Cox regression. Rad-score (Radiomics-score) was calculated by Lasso-Cox regression for the extracted features. Risk factors were selected by univariate/multivariate analysis of clinical factors and Rad-score. Three models for predicting RP were developed from the identified risk factors using Nomogram: Clinical, Rad-score, and Combined model. The model was evaluated using area under the curve (AUC) based on receiver operating characteristic (ROC) curves and concordance index (C-index). RP was evaluated using the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. The cumulative incidence of Grade 2 or higher RP was evaluated using the Kaplan-Meier method. RESULTS Of the 128 cases, grade 2 or higher RP was observed in 50 cases (39%). Regarding clinical factors, gender, smoking status, and histology were selected as significant predictors of RP. Lasso-Cox analysis of radiomics features selected 11 features from CT images, 7 features from PET images, and 16 features from dose distribution as predictors of RP, yielding a total of 34 factors. The combined model (C-index: 0.96, AUC: 0.92) showed the best discrimination performance compared to the clinical model (C-index: 0.73, AUC: 0.56) and the Rad-score model (C-index: 0.87, AUC: 0.92). Risk classification using the combined model showed that the 1-year cumulative incidence of grade 2 or higher RP was 65% in the high-risk group, significantly higher than 15% in the low-risk group (p<0.001). CONCLUSION The combined model with Rad-score and clinical factors can predict grade 2 or higher RP in NSCLC patients with high accuracy.
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Affiliation(s)
- N Imano
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
| | - D Kawahara
- Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
| | - R Nishioka
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
| | - K Koike
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
| | - T Katsuta
- Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
| | - J Hirokawa
- Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
| | - A Saito
- Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
| | - I Nishibuchi
- Department of Radiation Oncology, Hiroshima University Hospital, Hiroshima, Japan
| | - Y Murakami
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Nagata
- Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University, Hiroshima, Japan
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Ogawa M, Sago T, Furukawa H, Saito A. Psychometric evaluation of the Japanese version of the fear of pain questionnaire-III and its association with dental anxiety: a cross-sectional study. BMC Oral Health 2023; 23:559. [PMID: 37573290 PMCID: PMC10422720 DOI: 10.1186/s12903-023-03273-8] [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: 04/21/2023] [Accepted: 07/31/2023] [Indexed: 08/14/2023] Open
Abstract
BACKGROUND Fear of pain is a significant concern related to chronic pain and its impact on daily functioning. It is also associated with dental anxiety, highlighting its relevance in dental practice. This study aimed to validate the Japanese version of the Fear of Pain Questionnaire-III (FPQ-III) and explore its relationship with dental anxiety. METHODS 400 participants completed the Japanese version of the FPQ-III, with 100 participants re-evaluated after one month. Convergent validity was tested against dental anxiety and pain catastrophizing, while discriminant validity was assessed by examining general anxiety and depression correlations. Confirmatory factor analysis was used to examine the factorial validity of the FPQ-III and a shortened version of the FPQ-III (FPQ-9). Item response theory was applied for each subscale to estimate the discriminative power of each item and draw a test information curve. Structural equation modeling (SEM) was used to investigate the relationship between fear of pain and dental anxiety. RESULTS Data from 400 participants (200 women, 44.9 ± 14.5 years) were analyzed. The FPQ-III showed good internal validity, intra-examiner reliability, discriminant validity, and convergent validity. Confirmatory factor analysis results supported a three-factor structure, and the FPQ-9 showed a good fit. Test information curves demonstrated that the FPQ-9 maintained high accuracy over a similarly wide range as the FPQ-III. SEM revealed that fear of minor pain was associated with dental anxiety via fear of medical pain even in individuals without painful medical or dental experiences (indirect effect 0.48 [95% CI: 0.32-0.81]). Fear of severe pain tended to be higher in individuals with chronic pain compared to those without (latent mean values 0 vs. 0.27, p = 0.002) and was also associated with dental anxiety via fear of medical pain in women (indirect effect 0.15 [95% CI: 0.01-0.34]). CONCLUSION The Japanese version of the FPQ-9 demonstrated high reliability and validity, making it a valuable tool in dental clinical and research settings. It provides insights into the fear of pain among individuals with chronic pain and dental anxiety, informing potential intervention strategies.
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Affiliation(s)
- Mika Ogawa
- Section of Anesthesiology, Department of Diagnostics and General Care, Fukuoka Dental College, Fukuoka, Japan.
| | - Teppei Sago
- Department of Dental Anesthesiology, Kyushu Dental University, Kitakyushu, Japan
| | - Hirokazu Furukawa
- Department of Clinical Psychology, Naruto University of Education, Tokushima, Japan
| | - Akihiro Saito
- Department of Business Administration, The University of Kitakyushu, Kitakyushu, Japan
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Saito A, Hoshi K, Wakabayashi Y, Togashi T, Shigematsu T, Katori M, Ohyama T, Higuchi K. Barley Cultivar Sarab 1 Has a Characteristic Region on the Thylakoid Membrane That Protects Photosystem I under Iron-Deficient Conditions. Plants (Basel) 2023; 12:2111. [PMID: 37299090 PMCID: PMC10255597 DOI: 10.3390/plants12112111] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
The barley cultivar Sarab 1 (SRB1) can continue photosynthesis despite its low Fe acquisition potential via roots and dramatically reduced amounts of photosystem I (PSI) reaction-center proteins under Fe-deficient conditions. We compared the characteristics of photosynthetic electron transfer (ET), thylakoid ultrastructure, and Fe and protein distribution on thylakoid membranes among barley cultivars. The Fe-deficient SRB1 had a large proportion of functional PSI proteins by avoiding P700 over-reduction. An analysis of the thylakoid ultrastructure clarified that SRB1 had a larger proportion of non-appressed thylakoid membranes than those in another Fe-tolerant cultivar, Ehimehadaka-1 (EHM1). Separating thylakoids by differential centrifugation further revealed that the Fe-deficient SRB1 had increased amounts of low/light-density thylakoids with increased Fe and light-harvesting complex II (LHCII) than did EHM1. LHCII with uncommon localization probably prevents excessive ET from PSII leading to elevated NPQ and lower PSI photodamage in SRB1 than in EHM1, as supported by increased Y(NPQ) and Y(ND) in the Fe-deficient SRB1. Unlike this strategy, EHM1 may preferentially supply Fe cofactors to PSI, thereby exploiting more surplus reaction center proteins than SRB1 under Fe-deficient conditions. In summary, SRB1 and EHM1 support PSI through different mechanisms during Fe deficiency, suggesting that barley species have multiple strategies for acclimating photosynthetic apparatus to Fe deficiency.
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Affiliation(s)
| | | | | | | | | | | | | | - Kyoko Higuchi
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Setagaya-ku, Tokyo 156-8502, Japan; (A.S.); (T.O.)
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Saito A, Dohra H, Hamada M, Moriuchi R, Kotsuchibashi Y, Mori K. Physiological and genomic analyses of cobalamin (vitamin B 12)-auxotrophy of Lysobacter auxotrophicus sp. nov., a methionine-auxotrophic chitinolytic bacterium isolated from chitin-treated soil. Int J Syst Evol Microbiol 2023; 73. [PMID: 37204832 DOI: 10.1099/ijsem.0.005899] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023] Open
Abstract
A novel bacterium, designated 5-21aT, isolated from chitin-treated upland soil, exhibits methionine (Met) auxotrophy and chitinolytic activity. A physiological experiment revealed the cobalamin (synonym, vitamin B12)(Cbl)-auxotrophic property of strain 5-21aT. The newly determined complete genomic sequence indicated that strain 5-21aT possesses only the putative gene for Cbl-dependent Met synthase (MetH) and lacks that for the Cbl-independent one (MetE), which implies the requirement of Cbl for Met-synthesis in strain 5-21aT. The set of genes for the upstream (corrin ring synthesis) pathway of Cbl synthesis is absent in the genome of strain 5-21aT, which explains the Cbl-auxotrophy of 5-21aT. This strain was characterized via a polyphasic approach to determine its taxonomic position. The nucleotide sequences of two copies of the 16S rRNA gene of strain 5-21aT indicated the highest similarities to Lysobacter soli DCY21T(99.8 and 99.9 %) and Lysobacter panacisoli CJ29T(98.7 and 98.8 %, respectively), whose Cbl-auxotrophic properties were revealed in this study. The principal respiratory quinone was Q-8. The predominant cellular fatty acids were iso-C15:0, iso-C16:0 and iso-C17:1 ω9c. The complete genome sequence of strain 5-21aT revealed that the genome size was 4 155 451 bp long and the G+C content was 67.87 mol%. The average nucleotide identity and digital DNA-DNA hybridization values between strain 5-21aT and its most closely phylogenetic relative L. soli DCY21T were 88.8 and 36.5%, respectively. Based on genomic, chemotaxonomic, phenotypic and phylogenetic data, strain 5-21aT represents a novel species in the genus Lysobacter, for which the name Lyobacter auxotrophicus sp. nov. is proposed. The type strain is 5-21aT (=NBRC 115507T=LMG 32660T).
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Affiliation(s)
- Akihiro Saito
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
| | - Hideo Dohra
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Moriyuki Hamada
- NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation (NITE), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
| | - Ryota Moriuchi
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka 422-8529, Japan
| | - Yohei Kotsuchibashi
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
| | - Koji Mori
- NITE Biological Resource Center (NBRC), National Institute of Technology and Evaluation (NITE), 2-5-8 Kazusakamatari, Kisarazu, Chiba 292-0818, Japan
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Ohyama T, Isaka M, Saito A, Higuchi K. Effects of Nodulation on Metabolite Concentrations in Xylem Sap and in the Organs of Soybean Plants Supplied with Different N Forms. Metabolites 2023; 13:metabo13030319. [PMID: 36984759 PMCID: PMC10058755 DOI: 10.3390/metabo13030319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/08/2023] [Accepted: 02/16/2023] [Indexed: 02/24/2023] Open
Abstract
The effects of nodulation on N metabolism in soybean plants supplied with various forms of N are not fully understood. Ureides are the principal forms of N transported from nodules, but nitrate and asparagine are the primary N compounds transported from roots supplied with NO3−. In this research, the effects of 1-day treatments of NO3−, NH4+, urea, or NO3− + NH4+ on N metabolite concentrations in xylem sap and each organ were compared between nodulated and non-nodulated soybeans. Capillary electrophoresis and colorimetry were used for the analysis. In the xylem sap of the nodulated plants with an N-free solution, ureides were the major N metabolites, followed by asparagine and glutamine. Ureides concentrations were much lower in the xylem sap of the non-nodulated soybeans. In the NO3− treatment, the concentrations of ureides in the xylem sap of the nodulated plants decreased compared to the control plants. In the NH4+, urea, and NO3− + NH4+ treatments, the concentrations of asparagine and glutamine increased significantly compared with the control and NO3− treatments. Similar changes with the N treatments were observed between the nodulated and non-nodulated soybeans, suggesting that nodulation does not have significant effects on the metabolism of absorbed N in roots.
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Shinde T, Saito A, Okada K, Wakasa M, Kimoto M, Kamada T, Shibata K, Okura K, Sato H, Takahashi Y. Influence of lower extremity rotation on knee kinematics in single-leg landing. Phys Ther Sport 2022; 58:87-92. [DOI: 10.1016/j.ptsp.2022.10.002] [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] [Received: 03/12/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/29/2022]
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Matsumura T, Hashimoto H, Sekimizu M, Saito A, Asakura M, Kimura K, Iwata Y. VP.59 A single-arm, open-label, multicenter study of tranilast for advanced heart failure in patients with muscular dystrophy. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.253] [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: 11/07/2022]
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Shimoi T, Saito A, Charvat H, Matsuda T, Yonemori K. 1523P Incidence and geographic distribution of bone and soft tissue sarcoma in Japan using a nationwide population-based analysis: 69,734 cases. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Tsukinoki K, Yamamoto T, Saito J, Sakaguchi W, Iguchi K, Inoue Y, Ishii S, Sato C, Yokoyama M, Shiraishi Y, Kato N, Shimada H, Makabe A, Saito A, Tanji M, Nagaoka I, Saruta J, Yamaguchi T, Kimoto S, Yamaguchi H. Prevalence of saliva immunoglobulin A antibodies reactive with severe acute respiratory syndrome coronavirus 2 among Japanese people unexposed to the virus. Microbiol Immunol 2022; 66:403-410. [PMID: 35607844 PMCID: PMC9347685 DOI: 10.1111/1348-0421.13011] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/11/2022] [Accepted: 05/21/2022] [Indexed: 11/29/2022]
Abstract
While the COVID-19 pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) poses a threat to public health as the number of cases and COVID-19-related deaths are increasing worldwide, the incidence of the virus infection is extremely low in Japan compared with many other countries. To explain this uncommon phenomenon, we investigated the prevalence of naturally occurring ("natural") antibodies, focusing on those of the secretory immunoglobulin A (sIgA) form, reactive with SARS-CoV-2 among Japanese people. One hundred and eighty healthy Japanese volunteers of a wide range of age who had been considered to be unexposed to SARS-CoV-2 participated in this study. Saliva samples and blood samples were collected from all of the 180 participants and 139 adults (aged ≥ 20 years) included therein, respectively. The determination of saliva IgA antibodies, mostly comprising sIgA antibodies, as well as serum IgA and immunoglobulin G antibodies, reactive with the receptor binding domain of the SARS-CoV-2 spike-1 subunit proteins was conducted using an enzyme-linked immunosorbent assay. The major findings were that 52.78% (95% confidence interval, 45.21%-60.25%) of the individuals who had not been exposed to SARS-CoV-2 were positive for saliva IgA antibodies with a wide range of levels between 0.002 and 3.272 ng/mL, and that there may be a negative trend in positivity for the antibodies according to age. As we had expected, a frequent occurrence of assumable "natural" sIgA antibodies reactive with SARS-CoV-2 among the studied Japanese participant population was observed.
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Affiliation(s)
- Keiichi Tsukinoki
- Department of Environmental Pathology, Graduate School of DentistryKanagawa Dental UniversityKanagawaJapan
| | | | | | - Wakako Sakaguchi
- Department of Environmental Pathology, Graduate School of DentistryKanagawa Dental UniversityKanagawaJapan
| | - Keiichiro Iguchi
- Department of OrthodonticsKanagawa Dental UniversityKanagawaJapan
| | - Yoshinori Inoue
- Department of Pediatric DentistryKanagawa Dental UniversityKanagawaJapan
| | - Shigeru Ishii
- Department of Advanced Oral SurgeryKDU Yokohama ClinicKanagawaJapan
| | | | - Mina Yokoyama
- Department of Pediatric DentistryKanagawa Dental UniversityKanagawaJapan
| | | | - Noriaki Kato
- EPS Research Center, EPS Holdings, Inc.TokyoJapan
| | | | - Akio Makabe
- Sites Support Section, Foods DepartmentEP Mediate Co., Ltd.TokyoJapan
| | - Akihiro Saito
- Sites Support Section, Foods DepartmentEP Mediate Co., Ltd.TokyoJapan
| | | | - Isao Nagaoka
- Department of Host Defense and Biochemical Research, Faculty of Health ScienceJuntendo UniversityTokyoJapan
| | - Juri Saruta
- Department of Education PlanningKanagawa Dental UniversityKanagawaJapan
| | | | - Shigenari Kimoto
- Department of Pediatric DentistryKanagawa Dental UniversityKanagawaJapan
| | - Hideyo Yamaguchi
- EPS Research Center, EPS Holdings, Inc.TokyoJapan
- Department of Diagnostics and Disease Control, Institute of Medical MycologyTeikyo UniversityTokyoJapan
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13
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Aizawa Y, Mori M, Suzuki T, Saito A, Inoue H. Shotgun proteomic investigation of methyltransferase and methylation profiles in lipopolysaccharide stimulated RAW264.7 murine macrophages. Biomed Res 2022; 43:73-80. [PMID: 35718447 DOI: 10.2220/biomedres.43.73] [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] [Indexed: 12/22/2022]
Abstract
Arginine methylation is a common post-translational modification which functions as an epigenetic regulator of transcription and plays a key role in various cell signaling pathways. The methylation of arginine residues is catalyzed by protein arginine methyltransferase (PRMT). However, the expression pattern and underlying mechanism of PRMTs and protein methylation profile in lipopolysaccharide (LPS)-induced innate immune responses are poorly understood. Using a shotgun proteomic approach, we found that LPS stimulation increased arginine and proline metabolism and responses to inflammation and bacterial infections. In comparison, cysteine and methionine metabolism, the pentose phosphate pathway, purine metabolism, and protein methylation factors were also decreased in LPS stimulated murine macrophage cell lines. We revealed that LPS stimulation downregulated PRMT1, PRMT5, and protein arginine methylation profiles in RAW264.7 cells using western blot analysis. Additionally, this phenomenon occurred in parallel with nitric oxide accumulation in LPS-induced macrophages. Using inflammation models, we demonstrate for the first time that LPS stimulation decreases PRMTs, leading to the decreasing of arginine methylation in macrophages.
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Affiliation(s)
- Yumi Aizawa
- Faculty of Applied Bioscience, Tokyo University of Agriculture.,Research and Development Center for Minimally Invasive Therapies, Institute of Medical Science, Tokyo Medical University
| | - Masaru Mori
- Institute for Advanced Biosciences, Keio University
| | - Tsukasa Suzuki
- Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Akihiro Saito
- Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Hirofumi Inoue
- Faculty of Applied Bioscience, Tokyo University of Agriculture
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Fujimoto K, Saito A, Kotsuchibashi Y. Cicada-Wing-Inspired Nanopillar Hydrogels Consisting of Poly(vinyl alcohol) and Poly(methacrylic acid) for Capturing Bacteria through Their Flexibility and Wide Range of Motion. ACS Macro Lett 2022; 11:727-732. [PMID: 35579174 DOI: 10.1021/acsmacrolett.2c00126] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The human race has learned about countering bacterial infection from other living organisms. In this study, cicada-wing-inspired hydrophilic nanopillars were prepared using commercially available porous alumina templates without the use of specialized equipment and additional materials. Hydrophilic polymers of poly(vinyl alcohol) (PVA) and poly(methacrylic acid) (poly(MAAc)) were used to construct these nanopillars. The water-insoluble nanopillars formed by thermal cross-linking between the hydroxy and carboxy groups were highly flexible, with no significant structural disruption being observed on tilting them. The nanopillars captured Gram-negative and Gram-positive bacteria, despite their negatively charged surface leading an electrostatic repulsion with bacteria. The wing of the cicada has evolved to remain dry and maintain its lightweight. The water-containing cicada-wing structure may be an unknown encounter for bacteria and, thus, may become a countermeasure against the ever-changing bacteria.
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Affiliation(s)
- Kazuma Fujimoto
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
| | - Akihiro Saito
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
| | - Yohei Kotsuchibashi
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan
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15
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Higuchi K, Kurita K, Sakai T, Suzui N, Sasaki M, Katori M, Wakabayashi Y, Majima Y, Saito A, Ohyama T, Kawachi N. "Live-Autoradiography" Technique Reveals Genetic Variation in the Rate of Fe Uptake by Barley Cultivars. Plants (Basel) 2022; 11:plants11060817. [PMID: 35336699 PMCID: PMC8956111 DOI: 10.3390/plants11060817] [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] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/17/2022] [Accepted: 03/17/2022] [Indexed: 05/17/2023]
Abstract
Iron (Fe) is an essential trace element in plants; however, the available Fe in soil solution does not always satisfy the demand of plants. Genetic diversity in the rate of Fe uptake by plants has not been broadly surveyed among plant species or genotypes, although plants have developed various Fe acquisition mechanisms. The "live-autoradiography" technique with radioactive 59Fe was adopted to directly evaluate the uptake rate of Fe by barley cultivars from a nutrient solution containing a very low concentration of Fe. The uptake rate of Fe measured by live autoradiography was consistent with the accumulation of Fe-containing proteins on the thylakoid membrane. The results revealed that the ability to acquire Fe from the low-Fe solution was not always the sole determinant of tolerance to Fe deficiency among barley genotypes. The live-autoradiography system visualizes the distribution of β-ray-emitting nuclides and has flexibility in the shape of the field of view. This technique will strongly support phenotyping with regard to the long-distance transport of nutrient elements in the plant body.
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Affiliation(s)
- Kyoko Higuchi
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
- Correspondence: ; Tel.: +81-354772315
| | - Keisuke Kurita
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), Ibaraki 319-1195, Japan; (K.K.); (T.S.)
| | - Takuro Sakai
- Materials Sciences Research Center, Japan Atomic Energy Agency (JAEA), Ibaraki 319-1195, Japan; (K.K.); (T.S.)
| | - Nobuo Suzui
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum Science and Technology (QST), Takasaki 370-1292, Japan; (N.S.); (N.K.)
| | - Minori Sasaki
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Maya Katori
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Yuna Wakabayashi
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Yuta Majima
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Akihiro Saito
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Takuji Ohyama
- Laboratory of Biochemistry in Plant Productivity, Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (M.S.); (M.K.); (Y.W.); (Y.M.); (A.S.); (T.O.)
| | - Naoki Kawachi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum Science and Technology (QST), Takasaki 370-1292, Japan; (N.S.); (N.K.)
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Imano N, Kimura T, Kawahara D, Kubo K, Takeuchi Y, Saito A, Nishibuchi I, Murakami Y, Nagata Y. Potential Benefits of Volumetric Modulated Arc Therapy to Reduce the Incidence of Grade 2 Radiation Pneumonitis in Radiotherapy for Locally Advanced Non-Small Cell Lung Cancer Patients. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1244] [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: 10/20/2022]
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17
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Kishikawa R, Hatano M, Ishii S, Shimbo M, Saito A, Minatsuki S, Iwasaki Y, Fujio K, Komuro I. AB0285 EFFECTIVENESS OF IMMUNOSUPPRESSIVE THERAPY FOR CONNECTIVE TISSUE DISEASE–ASSOCIATED PULMONARY ARTERIAL HYPERTENSION. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Connective tissue disease (CTD) associated pulmonary arterial hypertension (PAH) is considered to be an indication for immunosuppressive therapy (IT) except scleroderma associated PAH. However, the response rate defined by improvement of WHO functional class and hemodynamic parameters is reported to be around 50% [1]. Since CTDs are systemic diseases, it may be difficult to evaluate the efficacy of IT by subjective symptoms. Although there are previous studies reporting that the combined use of IT and pulmonary vasodilators significantly improved hemodynamics [2], response to IT without titration of pulmonary vasodilators remains to be elucidated.Objectives:To examine whether IT is effective for CTD-PAH.Methods:We retrospectively examined the medical records of consecutive 13 patients with CTD-PAH (female 13, mean age 47 ± 15 years) treated with methylprednisolone (1 mg/kg/day, oral) and intravenous bolus cyclophosphamide (IVCY) (500 mg/m2) every four weeks for six times. Patient characteristics are described in Table 1. Right heart catheterization (RHC) was done at prior to IT, before adding PAH specific agents, and at the fifth or sixth course of IVCY. In treated cases, the previous vasodilators remained unchanged during the first term of IT.Results:At the first follow up RHC, decrease of mean pulmonary arterial pressure over 5 mmHg was observed in all patients, and decrease of pulmonary vascular resistance (PVR) was observed in twelve out of 13 patients (Figure 1). Over 20% of PVR reduction was observed more in the patients of pulmonary vasodilator naïve and started IT within one year from symptoms than others (6/7 vs 1/6, p=0.03). Although six-minutes walk distance (6MWD) tended to be prolonged between first and second RHC (298 ± 70 m vs 382 ± 81 m; p=0.054; n = 9), 6MWD was shortened in some cases with good hemodynamic improvement (2/5). All patients were prescribed oral PAH specific agents finally, but no one needed parenteral prostanoids. Two patients (15%) died during maintenance therapy for causes other than PAH. Three-year and five-year survival rates were 91.7% and 81.5%, respectively.Conclusion:IT without titration of pulmonary vasodilators significantly improved hemodynamic parameters despite of less improvement in 6MWD in CTD-PAH patients. Considering that CTDs itself might affect the exercise tolerance regardless of PAH, these hemodynamic changes may contribute to better prognosis and IT might be considered especially for patients early in clinical courses and treatment naïve.References:[1]Jais X, Launay D, Yaici A, et al. Immunosupressive therapy in lupus-and mixed connective tissue disease-associated pulmonary arterial hypertension. ARTHRITIS RHEUM. 2008; 58(2): 521-531.[2]Yamamoto M S, Fukumoto Y, Sugimura K, et al. Intensive immunosuppressive therapy improves pulmonary hemodynamics and long-term prognosis in patients with pulmonary arterial hypertension associated with connective tissue diseasae. Circ J. 2011; 75: 2668-2674.Table 1.Characteristics of patientsPatientAge,yrConnective Tissue DiseaseYears from symptom to immunosuppressive therapyPrevious vasodilatorsvasodilators at final visit147SS1.5PGI2ERA262SS, RA2nonePDE5332SS1noneERA457SS, SSc0.5nonePDE5526SS,MCTD, SLE,SSc0.5nonePDE5670SSc, SS s/o13sGC, ERAsGC, ERA732SS s/o, SLE0.1nonePDE5831MCTD3ERA,PDE5, PGI2ERA,PDE5, PGI2943SSc, SLE0.6ERA, PDE5ERA,PDE5, PGI21067MCTD,PM0nonesGC1141SS0.1noneERA, PDE51269SS0.3nonePDE51344SS, MCTD s/o, SLE s/o0.1noneERA, sGCN.A, not acquired; s/o, suspect of; SS, Sjögren’s syndrome; RA, rheumatoid arthritis; SSc systemic sclerosis; SLE, systemic lupus erythematosus; MCTD, mixed connective tissue disease; PM, Polymyositis; PGI2, prostacyclin derivative; sGC, soluble guanylate cyclase stimulator; ERA, endothelin receptor antagonist; PDE5, phosphodiesterase type 5 inhibitor.Figure 1.Hemodynamic changes during immunosuppressive therapyDisclosure of Interests:Risa Kishikawa: None declared, Masaru Hatano Speakers bureau: Janssen Pharmaceutical K.K, Bayer Yakuhin, Ltd., Grant/research support from: Janssen Pharmaceutical K.K, Nippon Shinyaku Co., Ltd., MOCHIDA PHARMACEUTICAL CO., LTD., Satoshi Ishii: None declared, Mai Shimbo: None declared, Akihito Saito: None declared, Shun Minatsuki: None declared, Yukiko Iwasaki: None declared, Keishi Fujio Speakers bureau: Tanabe Mitsubishi, Bristol Myers, Eli Lilly, Chugai, Jansen, Pfizer, Ono, AbbVie, Ayumi, Astellas, Sanofi, Novartis, Daiichi Sankyo, Eisai, Asahi Kasei, Japan Blood Products Organization, and Kowa, Grant/research support from: Tanabe Mitsubishi, Bristol Myers, Eli Lilly, Chugai, AbbVie, Ayumi, Astellas, Sanofi, Eisai, Tsumura & Co., and Asahi Kasei., Issei Komuro Speakers bureau: AstraZeneka, Daiichi Sankyo Company, Limited, Takeda Pharmaceutical Company Limited, Bayer Yakuhin, Ltd, Pfizer Japan Inc., and Ono Pharmaceutical Co., Ltd., Grant/research support from: Daiichi Sankyo Company, Ltd, Sumitomo Dainippon Pharma Co., Ltd., Takeda Pharmaceutical Company Ltd, Mitsubishi Tanabe Pharma Corporation, Teijin Pharma Limited, Idorsia Pharmaceuticals Ltd, Otsuka Pharmaceutical Co., Ltd., Bayer Yakuhin, Ltd. Ono Pharmaceutical Co., Ltd. Toa Eiyo Ltd
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Ono Y, Fukasawa M, Sueyoshi K, Ohtake N, Sato T, Tanabata S, Toyota R, Higuchi K, Saito A, Ohyama T. Application of Nitrate, Ammonium, or Urea Changes the Concentrations of Ureides, Urea, Amino Acids and Other Metabolites in Xylem Sap and in the Organs of Soybean Plants ( Glycine max (L.) Merr.). Int J Mol Sci 2021; 22:4573. [PMID: 33925462 PMCID: PMC8123890 DOI: 10.3390/ijms22094573] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/16/2021] [Accepted: 04/22/2021] [Indexed: 11/20/2022] Open
Abstract
Soybean (Glycine max (L.) Merr.) plants form root nodules and fix atmospheric dinitrogen, while also utilizing the combined nitrogen absorbed from roots. In this study, nodulated soybean plants were supplied with 5 mM N nitrate, ammonium, or urea for 3 days, and the changes in metabolite concentrations in the xylem sap and each organ were analyzed. The ureide concentration in the xylem sap was the highest in the control plants that were supplied with an N-free nutrient solution, but nitrate and asparagine were the principal compounds in the xylem sap with nitrate treatment. The metabolite concentrations in both the xylem sap and each organ were similar between the ammonium and urea treatments. Considerable amounts of urea were present in the xylem sap and all the organs among all the treatments. Positive correlations were observed between the ureides and urea concentrations in the xylem sap as well as in the roots and leaves, although no correlations were observed between the urea and arginine concentrations, suggesting that urea may have originated from ureide degradation in soybean plants, possibly in the roots. This is the first finding of the possibility of ureide degradation to urea in the underground organs of soybean plants.
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Affiliation(s)
- Yuki Ono
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; (Y.O.); (M.F.); (K.S.); (N.O.)
| | - Masashige Fukasawa
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; (Y.O.); (M.F.); (K.S.); (N.O.)
| | - Kuni Sueyoshi
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; (Y.O.); (M.F.); (K.S.); (N.O.)
| | - Norikuni Ohtake
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; (Y.O.); (M.F.); (K.S.); (N.O.)
| | - Takashi Sato
- Faculty of Bioresource Sciences, Akita Prefectural University, Akita 010-0195, Japan;
| | - Sayuri Tanabata
- College of Agriculture, Ibaraki University, Mito 310-0393, Japan;
| | - Ryo Toyota
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (R.T.); (K.H.); (A.S.)
| | - Kyoko Higuchi
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (R.T.); (K.H.); (A.S.)
| | - Akihiro Saito
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (R.T.); (K.H.); (A.S.)
| | - Takuji Ohyama
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; (Y.O.); (M.F.); (K.S.); (N.O.)
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo 156-8502, Japan; (R.T.); (K.H.); (A.S.)
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Saito A, Shinjo S, Ito D, Doi Y, Sato A, Wakabayashi Y, Honda J, Arai Y, Maeda T, Ohyama T, Higuchi K. Enhancement of Photosynthetic Iron-Use Efficiency Is an Important Trait of Hordeum vulgare for Adaptation of Photosystems to Iron Deficiency. Plants (Basel) 2021; 10:plants10020234. [PMID: 33504088 PMCID: PMC7911540 DOI: 10.3390/plants10020234] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 01/12/2021] [Accepted: 01/18/2021] [Indexed: 05/28/2023]
Abstract
Leaf iron (Fe) contents in Fe-deficiency-tolerant plants are not necessarily higher than that in Fe-deficiency-susceptible ones, suggesting an unknown mechanism involved in saving and allowing the efficient use of minimal Fe. To quantitatively evaluate the difference in Fe economy for photosynthesis, we compared the ratio of CO2 assimilation rate to Fe content in newly developed leaves as a novel index of photosynthetic iron-use efficiency (PIUE) among 23 different barley (Hordeum vulgare L.) varieties. Notably, varieties originating from areas with alkaline soil increased PIUE in response to Fe-deficiency, suggesting that PIUE enhancement is a crucial and genetically inherent trait for acclimation to Fe-deficient environments. Multivariate analyses revealed that the ability to increase PIUE was correlated with photochemical quenching (qP), which is a coefficient of light energy used in photosynthesis. Nevertheless, the maximal quantum yield of photosystem II (PSII) photochemistry, non-photochemical quenching, and quantum yield of carbon assimilation showed a relatively low correlation with PIUE. This result suggests that the ability of Fe-deficiency-tolerant varieties of barley to increase PIUE is related to optimizing the electron flow downstream of PSII, including cytochrome b6f and photosystem I.
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Ote K, Hashimoto F, Kakimoto A, Isobe T, Inubushi T, Ota R, Tokui A, Saito A, Moriya T, Omura T, Yoshikawa E, Teramoto A, Ouchi Y. Kinetics-Induced Block Matching and 5-D Transform Domain Filtering for Dynamic PET Image Denoising. IEEE Trans Radiat Plasma Med Sci 2020. [DOI: 10.1109/trpms.2020.3000221] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Takeuchi Y, Kameoka T, Ochi M, Imano N, Takahashi I, Nishibuchi I, Kimura T, Murakami Y, Kawahara D, Miki K, Saito A, Nagata Y. Interstitial Brachytherapy For Locally Advanced Tongue Cancer: Analysis Of The Long-Term Treatment Results For Survival And Complications. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Obata Y, Ishimori N, Saito A, Kinugawa S, Nakano I, Kakutani N, Yamanashi K, Yokota T, Anzai T. Activation of invariant natural killer T cells ameliorates doxorubicin-induced cardiotoxicity in mice. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3710] [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: 11/12/2022] Open
Abstract
Abstract
Objective
Doxorubicin (DOX) is one of the most important anticancer agents and widely used to treat cancers but clinical utility of DOX is limited for its dose-dependent cardiotoxicity. The precise mechanism of DOX-induced cardiotoxicity is still not fully understood but it has been reported that cardiac inflammation is involved in the cardiotoxicity. Invariant natural killer T (iNKT) cells, a unique subset of T lymphocytes that recognize glycolipid antigens and secrete a large amount of both Th1 and Th2 cytokines on activation, have been shown to play crucial roles in the regulation of immune responses. However, it remains unclear whether iNKT cells are involved in DOX-induced cardiotoxicity.
Methods and results
Male C57BL/6J mice were administered DOX (20mg/kg body weight; n=28) or vehicle (Vehicle; n=6). DOX-administered mice were further divided into 2 groups; those treated with α-galactosylceramide (αGC, 0.1μg/g body weight; DOX-αGC; n=14), which specifically activates iNKT cells, or those treated with PBS (DOX-PBS; n=14) by intraperitoneal injections (twice; 4 days before and 3 days after DOX administration).An echocardiography conducted at 14 days after DOX/Vehicle administration revealed that LV fractional shortening was significantly reduced in the DOX-PBS compared to the Vehicle (49.3±0.8% vs. 59.2±1.7%, P<0.05), and this decrease was completely attenuated in the DOX-αGC (57.7±1.3%, P<0.05 vs. DOX-PBS)without affecting LV end-diastolic diameter. Flow cytometric analysis revealed that the ratio of iNKT cells to mononuclear cells infiltrated into the heart tissue was significantly increased in the DOX+αGC compared to the Vehicle and the DOX+PBS (1.00±0.09% vs. 0.54±0.09% and 0.71±0.07%, P<0.05). Immuno-histochemistry revealed that the infiltration number of Iba1+macrophages in the heart tissue was significantly elevated in the DOX+αGC compared to the Vehicle and the DOX+PBS (55.4±3.2 cells/mm2 vs. 21.7±2.0 cells/mm2 and 37.5±5.9 cells/mm2, P<0.05) The ratio of fibrosis area to the heart tissue was markedly higher in the DOX-PBS than in Vehicle (4.3±0.5% vs. 2.2±0.1%, P<0.05), and this increase was completely attenuated in the DOX-αGC (2.8±0.1%, P<0.05 vs.DOX-PBS).Real-time PCR analysis revealed that mRNA expressions of M2 macrophage markers (Arginase 1 and Retnla) and IL-4 were significantly enhanced in the DOX+αGC compared to the DOX+PBS (Arginase 1: 2.5±0.4 vs. 1.6±0.3 [relative ratio to the Vehicle], P=0.08; Retnla: 2.4±0.5 vs. 1.1±0.2 [relative ratio to the Vehicle], P<0.05; IL-4: 1.0±0.3 vs. 8.94±2.8 [relative ratio to the DOX+PBS], P<0.05), while those of M1 macrophage markers (iNOS and MCP-1) did not change among all groups.
Conclusions
Activation of iNKT cells ameliorates DOX-induced cardiotoxicity in mice via enhanced M2 macrophage polarization with the upregulation of IL-4 and reducing cardiac fibrosis. iNKT cell activation can be a novel preventive strategy against DOX-induced cardiotoxicity.
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): Japan Agency for Medical Research and Development (18lm0203001j0002) and JSPS KAKENHI (18K15834).
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Affiliation(s)
- Y Obata
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - N Ishimori
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Saito
- Health Sciences University of Hokkaido, Cardiovascular Medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - I Nakano
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - N Kakutani
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - K Yamanashi
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
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Minatsuki S, Kiyosue A, Kodera S, Saito A, Maki H, Hatano M, Takimoto E, Ando J, Komuro I. Novel procedural method for balloon pulmonary angioplasty to treat chronic thromboembolic pulmonary hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2264] [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
The current strategy of balloon pulmonary angioplasty (BPA) for chronic thromboembolic pulmonary hypertension (CTEPH) is to dilate branches as many as possible without lung injury to normalize mean pulmonary artery pressure and oxygenation. The shape of guiding catheter is one of the important factors to achieve this strategy. However, conventional guiding catheters which are typically used for BPA are difficult to introduce into particular branches. The Ikari-curve left (IL) guiding catheter may be suitable for this purpose by adjusting its curves (Figure 1); however, its utility and effectiveness for lung injury are unclear.
Purpose
The aim of this study is to clarify utility and safety of IL guiding catheter for BPA.
Methods
We retrospectively analyzed 202 consecutive BPA sessions of 40 patients with CTEPH from November 2016 to October 2019 and divided them into two groups; IL group, in which we used IL guiding catheter; and non-IL group in which we used others. IL guiding catheter was used for branches of left lung which are difficult to introduce by conventional catheter prior Nov. 2018. After Nov.2018, we also used it for the same type branches of right lung. The occurrence of lung injury was determined by the presence of bloody sputum during the perioperative period. We compared success rate of introduction into target vessels and of occurrence of lung injury.
Results
The average age of enrolled patients was 60.3±14.4 year-old and female was 65%. There were 99 sessions in IL group. The median treated branches significantly differed between groups (IL group: 15 vs. non-IL group: 10, p<0.05). The lung injury rate tended to low in the IL group (4.0% vs. 11.7%, p=0.07). The IL group had more successful insertions into branches than did the non-IL group (right lung: middle lobe*, 84.4% vs. 57.5%; medial basal branch*, 46.9% vs. 7.5%; left lung: anterior ascending and descending branches, 82.9% vs. 70.8%; lingular branches*, 90.0% vs. 62.5%; anterior basal branch, 75.7% vs. 62.5%, * p<0.05).
Conclusion
IL guiding catheter can be introduced into branches that cannot be accessed via conventional guiding catheters and has potential to reduce the occurrence of lung injury. 2228 characters including space
Figure1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - A Kiyosue
- The University of Tokyo, Tokyo, Japan
| | - S Kodera
- The University of Tokyo, Tokyo, Japan
| | - A Saito
- The University of Tokyo, Tokyo, Japan
| | - H Maki
- The University of Tokyo, Tokyo, Japan
| | - M Hatano
- The University of Tokyo, Tokyo, Japan
| | | | - J Ando
- The University of Tokyo, Tokyo, Japan
| | - I Komuro
- The University of Tokyo, Tokyo, Japan
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Asano T, Ono M, Saito A, Kanie T, Takaoka T, Komiyama N. Twenty-year trends in clinical outcome of randomized controlled trial for coronary intervention: systematic review and meta-regression analysis of 46 randomized controlled trials. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1473] [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: 11/12/2022] Open
Abstract
Abstract
Aim
The technology of percutaneous coronary intervention (PCI) has been developed after the advent of coronary stent. However, the impact of the technological development on clinical outcomes is still unclear, whereas a remarkable improvement of clinical outcomes after PCI has not been observed in the trials comparing to medical therapy or coronary bypass graft. The current analysis aims to investigate trends in clinical outcomes after PCI after the emargence of coronary stent, using the randomized controlled trials (RCTs) comparing coronary stents.
Methods and results
We performed a systematic review of RCTs investigating coronary stents in non-specific population (excluding the trials particularly enrolling diabetic or myocardial infarction etc.) conducted between 1996 and 2015 (publication between 1997 and 2019) with independent clinical event adjudication. The random-effect meta-regression analysis including 90 arms with 94,831 patients in 46 RCTs was performed investigating the 20-year trends in clinical outcomes such as death, cardiac death, myocardial infarction, target lesion revascularization (TLR) and stent thrombosis at one and five years after the index procedure. The sensitivity analysis was performed by limiting to 20 all comer trials. In the meta-regression analysis, we did not observe significant change in the incidences of cardiac death and myocardial infarction after PCI over 20 years (P values for cardiac death: 0.666 at one year, 0.256 at five years and P values for myocardial infarction: 0.121 at one year, 0.376 at five years; R2 for cardiac death: <0.01 at one year and five years and R2 for myocardial infarction: <0.01 at one year and five years), whereas the incidences of clinically indicated TLR (P value <0.001, R2 = 0.40 at one year, P value = 0.002, R2 = 0.22 at five years) and stent thrombosis were decreased steeply in the first decade and slightly in the second decade (P value = 0.040, R2 = 0.09 at one year; P value = 0.017, R2 = 0.17 at five year). The sencitivity analysis limiting all-comer population revealed the consistent results.
Conclusion
The development of PCI had an impact on the 20-year trends in TLR and ST, despite there were no trends in the cardiac death and myocardial infarction.
Trends in the incidence of the outcomes
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Asano
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - M Ono
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - A Saito
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - T Kanie
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - T Takaoka
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
| | - N Komiyama
- St. Luke's International Hospital, Cardiology, Tokyo, Japan
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25
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Okiyama N, Nakamura Y, Ishitsuka Y, Inoue S, Kubota N, Saito A, Watanabe R, Fujisawa Y, Igawa K. Successful topical treatment with ketoconazole for facial rashes refractory to dupilumab in patients with atopic dermatitis: case reports. J Eur Acad Dermatol Venereol 2020; 34:e474-e476. [DOI: 10.1111/jdv.16383] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/29/2020] [Accepted: 03/16/2020] [Indexed: 12/20/2022]
Affiliation(s)
- N. Okiyama
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - Y. Nakamura
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - Y. Ishitsuka
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - S. Inoue
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - N. Kubota
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - A. Saito
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - R. Watanabe
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - Y. Fujisawa
- Department of Dermatology Faculty of Medicine University of Tsukuba Ibaraki Japan
| | - K. Igawa
- Department of Dermatology Dokkyo Medical University School of Medicine Tochigi Japan
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26
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Iwasaki Y, Ichino T, Saito A. Transition of the Bacterial Community and Culturable Chitinolytic Bacteria in Chitin-treated Upland Soil: From Streptomyces to Methionine-auxotrophic Lysobacter and Other Genera. Microbes Environ 2020; 35. [PMID: 31932540 PMCID: PMC7104288 DOI: 10.1264/jsme2.me19070] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Chitin amendment is an agricultural management strategy for controlling soil-borne plant disease. We previously reported an exponential decrease in chitin added to incubated upland soil. We herein investigated the transition of the bacterial community structure in chitin-degrading soil samples over time and the characteristics of chitinolytic bacteria in order to elucidate changes in the chitinolytic bacterial community structure during chitin degradation. The addition of chitin to soil immediately increased the population of bacteria in the genus Streptomyces, which is the main decomposer of chitin in soil environments. Lysobacter, Pseudoxanthomonas, Cellulosimicrobium, Streptosporangium, and Nonomuraea populations increased over time with decreases in that of Streptomyces. We isolated 104 strains of chitinolytic bacteria, among which six strains were classified as Lysobacter, from chitin-treated soils. These results suggested the involvement of Lysobacter as well as Streptomyces as chitin decomposers in the degradation of chitin added to soil. Lysobacter isolates required yeast extract or casamino acid for significant growth on minimal agar medium supplemented with glucose. Further nutritional analyses demonstrated that the six chitinolytic Lysobacter isolates required methionine (Met) to grow, but not cysteine or homocysteine, indicating Met auxotrophy. Met auxotrophy was also observed in two of the five type strains of Lysobacter spp. tested, and these Met auxotrophs used d-Met as well as l-Met. The addition of Met to incubated upland soil increased the population of Lysobacter. Met may be a factor increasing the population of Lysobacter in chitin-treated upland soil.
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Affiliation(s)
- Yukari Iwasaki
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology
| | - Tatsuya Ichino
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology
| | - Akihiro Saito
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology
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Silbernagel KM, Lindberg KG, Ary M, Bannach B, Barbour M, Battista K, Bauten H, Beatty S, Bogar S, Buczek L, Bulthau M, Burnett T, Carver C, Cha K, Cooper L, D’Andrea L, Davis B, Fain A, Feiler B, Fender M, Hirt W, Iannucci M, Jackson JK, Jensen D, Johnson K, Julien-Davis G, Kempf A, Krone P, Kusch S, LaPointe A, Leiva BR, Lewandowski V, Lewis J, Maycock L, Mebs D, McCann T, Moulsoff M, Newcomer C, Ooya M, O’Shea P, Otten N, Reed J, Remes A, Resutek J, Rukamp B, Rukamp S, Saito A, Shafie A, Smith A, Tabatt J, Tanaka H, Torrance H, VandeVoort M, Wang D, Windsor S, Xiong Y, Zebchuck A. Petrifilm™ Rapid S. aureus Count Plate Method for Rapid Enumeration of Staphylococcus aureus in Selected Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/84.5.1431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
A rehydratable dry-film plating method for Staphylococcus aureusin foods, the 3M™ Petrifilm™ Rapid S. aureus Count Plate method, was compared with AOAC® Official MethodSM 975.55 (Staphylococcus aureus in Foods). Nine foods—instant nonfat dried milk, dry seasoned vegetable coating, frozen hash browns, frozen cooked chicken patty, frozen ground raw pork, shredded cheddar cheese, fresh green beans, pasta filled with beef and cheese, and egg custard—were analyzed for S. aureus by 13 collaborating laboratories. For each food tested, the collaborators received 8 blind test samples consisting of a control sample and 3 levels of inoculated test sample, each in duplicate. The mean log counts for the methods were comparable for pasta filled with beef and cheese; frozen hash browns; cooked chicken patty; egg custard; frozen ground raw pork; and instant nonfat dried milk. The repeatability and reproducibility variances of the Petrifilm Rapid S. aureus Count Plate method were similar to those of the standard method.
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Nakamura Y, Ishitsuka Y, Tanaka R, Okiyama N, Saito A, Watanabe R, Fujisawa Y. Acral lentiginous melanoma and mucosal melanoma expressed less programmed-death 1 ligand than cutaneous melanoma: a retrospective study of 73 Japanese melanoma patients. J Eur Acad Dermatol Venereol 2019; 33:e424-e426. [PMID: 31187906 DOI: 10.1111/jdv.15742] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/10/2019] [Accepted: 05/29/2019] [Indexed: 12/30/2022]
Affiliation(s)
- Y Nakamura
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Ishitsuka
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - R Tanaka
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - N Okiyama
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - A Saito
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - R Watanabe
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Fujisawa
- Department of Dermatology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Obata Y, Ishimori N, Saito A, Kinugawa S, Nakano I, Kakutani N, Yamanashi K, Anzai T. P1623Activation of invariant natural killer T cells by alpha-galactosylceramide ameliorates doxorubicin-induced cardiotoxicity in mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
Doxorubicin (DOX) is an effective antineoplastic agent commonly used to treat many types of cancer but its clinical use is limited because of cardiotoxicity, which might proceed to irreversible cardiac dysfunction in a dose-dependent manner. The precise mechanism of DOX-induced cardiotoxicity is still not fully elucidated but it has been reported that cardiac inflammation is involved in the cardiotoxicity. Invariant natural killer T (iNKT) cells, a unique subset of T lymphocytes that recognize glycolipid antigens and secrete a large amount of Th1 and Th2 cytokines on activation, have been shown to play crucial roles in the regulation of immune responses. However, it remains unclear whether iNKT cells are involved in DOX-induced cardiotoxicity.
Methods and results
Male C57BL/6J mice were administered DOX (20mg/kg body weight single intraperitoneal injection; n=28) or vehicle (Vehicle; n=6). DOX-administered mice were further divided into 2 groups; α-galactosylceramide (αGC, 0.1μg/g body weight twice intraperitoneal injection; DOX-αGC; n=14), which specifically activates iNKT cells, or phosphate-buffered saline alone (PBS; DOX-PBS; n=14) 4 days before and 3 days after DOX administration. Survival rate at 14 days after DOX/Vehicle administration was significantly lower in DOX-PBS than in Vehicle (71% vs. 100%, P<0.05), and this decrease was completely attenuated in DOX-αGC (100%, P<0.05 vs. DOX-PBS). Echocardiography at 14 days after DOX/Vehicle administration revealed that left ventricular (LV) fractional shortening was significantly reduced in DOX-PBS compared to Vehicle (49.3±0.8% vs. 59.2±1.7%, P<0.05), and this decrease was completely attenuated in DOX-αGC (57.7±1.3%, P<0.05 vs. DOX-PBS) without affecting LV end-diastolic diameter. Picro-sirius red staining revealed that the ratio of fibrosis area to the cardiac tissue was markedly higher in DOX-PBS than in Vehicle (4.3±0.5% vs. 2.2±0.1%, P<0.05), and this increase was completely attenuated in DOX-αGC (2.8±0.1%, P<0.05 vs. DOX-PBS). Real-time PCR analysis revealed that mRNA expression of anti-inflammatory Th2 cytokine IL-4 was enhanced by 7.9-folds in DOX-αGC compared to DOX-PBS, though the difference did not reach statistically significance (P=0.09).
Conclusions
Activation of iNKT cells by αGC ameliorates DOX-induced cardiotoxicity in mice via up-regulation of anti-inflammatory IL-4 and reducing cardiac fibrosis. iNKT cell activation may be a novel therapeutic strategy against DOX-induced cardiotoxicity.
Acknowledgement/Funding
Japan Agency for Medical Research and Development (18lm0203001j0002) and JSPS KAKENHI (18K15834)
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Affiliation(s)
- Y Obata
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - N Ishimori
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Saito
- Health Sciences University of Hokkaido, Cardiovascular Medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - I Nakano
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - N Kakutani
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - K Yamanashi
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
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Imano N, Kimura T, Kameoka T, Ochi M, Takeuchi Y, Takahashi I, Nishibuchi I, Murakami Y, Kawahara D, Miki K, Saito A, Yasushi N. P1.18-22 Impact of Using Volumetric Modulated Arc Therapy on Radiation Pneumonitis in Locally Advanced Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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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31
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Katz DL, Karlsen MC, Chung M, Shams-White MM, Green LW, Fielding J, Saito A, Willett W. Hierarchies of evidence applied to lifestyle Medicine (HEALM): introduction of a strength-of-evidence approach based on a methodological systematic review. BMC Med Res Methodol 2019; 19:178. [PMID: 31429718 PMCID: PMC6701153 DOI: 10.1186/s12874-019-0811-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/25/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Current methods for assessing strength of evidence prioritize the contributions of randomized controlled trials (RCTs). The objective of this study was to characterize strength of evidence (SOE) tools in recent use, identify their application to lifestyle interventions for improved longevity, vitality, or successful aging, and to assess implications of the findings. METHODS The search strategy was created in PubMed and modified as needed for four additional databases: Embase, AnthropologyPlus, PsycINFO, and Ageline, supplemented by manual searching. Systematic reviews and meta-analyses of intervention trials or observational studies relevant to lifestyle intervention were included if they used a specified SOE tool. Data was collected for each SOE tool. Conditions necessary for assigning the highest SOE grading and treatment of prospective cohort studies within each SOE rating framework were summarized. The expert panel convened to discuss the implications of findings for assessing evidence in the domain of lifestyle medicine. RESULTS AND CONCLUSIONS A total of 15 unique tools were identified. Ten were tools developed and used by governmental agencies or other equivalent professional bodies and were applicable in a variety of settings. Of these 10, four require consistent results from RCTs of high quality to award the highest rating of evidence. Most SOE tools include prospective cohort studies only to note their secondary contribution to overall SOE as compared to RCTs. We developed a new construct, Hierarchies of Evidence Applied to Lifestyle Medicine (HEALM), to illustrate the feasibility of a tool based on the specific contributions of diverse research methods to understanding lifetime effects of health behaviors. Assessment of evidence relevant to lifestyle medicine requires a potential adaptation of SOE approaches when outcomes and/or exposures obviate exclusive or preferential reliance on RCTs. This systematic review was registered with the International Prospective Register of Systematic Reviews, PROSPERO [CRD42018082148].
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Affiliation(s)
- D. L. Katz
- American College of Lifestyle Medicine, PO Box 6432, Chesterfield, MO 63006 USA
- The True Health Initiative, Derby, CT USA
- Yale Griffith Prevention Research Center, 130 Division St, Derby, CT 06418 USA
| | - M. C. Karlsen
- American College of Lifestyle Medicine, PO Box 6432, Chesterfield, MO 63006 USA
- Applied Clinical Nutrition and Global Public Health Programs, University of New England, 11 Hills Beach Rd, Biddeford, ME 04005 USA
| | - M. Chung
- Department of Public Health and Community Medicine, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111 USA
| | - M. M. Shams-White
- Risk Factor Assessment Branch, Division of Cancer Control and Population Sciences, National Cancer Institute, 9609 Medical Center Drive, 4E204, Bethesda, MD 20850 USA
| | - L. W. Green
- Department of Epidemiology and Biostatistics, University of California at San Francisco School of Medicine, 550 16th Street, Second Floor, San Francisco, CA 94158 USA
| | - J. Fielding
- University of California Fielding School of Public Health, 650 Charles E Young Dr S, Los Angeles, CA 90095 USA
| | - A. Saito
- Brown University School of Public Health, 121 S Main St, Providence, RI 02903 USA
| | - W. Willett
- Harvard University T.H. Chan School of Public Health, 655 Huntington Avenue, Boston, MA 02115 USA
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115 USA
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Kimura K, Hori K, Yonezawa K, Nishibori F, Oka D, Iijima K, Saito A, Tsujii Y, Takano K. Effect of Good Eating Quality Gene Loci of Koshihikari on the Composition of Low Molecular Weight Compounds of Polished and Cooked Rice. J JPN SOC FOOD SCI 2019. [DOI: 10.3136/nskkk.66.159] [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: 11/03/2022]
Affiliation(s)
- Keiichi Kimura
- Department of Agricultural Chemistry, Graduate School of Agriculture, Tokyo University of Agriculture
| | - Kiyosumi Hori
- Institute of Crop Science, National Agriculture and Food Research Organization
| | - Kayo Yonezawa
- Department of Agricultural Chemistry, Faculty of Applied Biosciences, Tokyo University of Agriculture
| | - Fumiya Nishibori
- Food Processing Technology Center, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Daiki Oka
- Department of Agricultural Chemistry, Faculty of Applied Biosciences, Tokyo University of Agriculture
| | - Ken Iijima
- Institute of Crop Science, National Agriculture and Food Research Organization
| | - Akihiro Saito
- Department of Agricultural Chemistry, Faculty of Applied Biosciences, Tokyo University of Agriculture
| | - Yoshimasa Tsujii
- Department of Agricultural Chemistry, Faculty of Applied Biosciences, Tokyo University of Agriculture
| | - Katsumi Takano
- Department of Agricultural Chemistry, Faculty of Applied Biosciences, Tokyo University of Agriculture
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Saito A, Fujimoto M, Okiyama N. 037 Transforming growth factor-β produced by keratinocytes undergoing apoptosis promotes skin fibrosis in chronic graft-versus-host disease-like reaction. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.113] [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: 10/27/2022]
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34
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Kubota N, Saito A, Tanaka R, Clausen B, Fujimoto M, Okiyama N. 018 Langerhans cells suppress CD8 T cells in situ during acute graft-versus-host disease-like autoimmune mucocutaneous disease. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.094] [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]
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Hara T, Hatano M, Saito A, Minatsuki S, Maki H, Amiya E, Hosoya Y, Nagayama K, Sato M, Anraku M, Nakajima J, Komuro I. High Heart Rate and Pulmonary Vascular Resistance Predict Poor Prognosis after Referral for Lung Transplantation in Patients with Pulmonary Arterial Hypertension. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1243] [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: 10/27/2022] Open
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Hara T, Hatano M, Saito A, Minatsuki S, Maki H, Amiya E, Hosoya Y, Nagayama K, Sato M, Anraku M, Nakajima J, Komuro I. PROGNOSTIC FACTORS FOR PATIENTS WITH SEVERE PULMONARY ARTERIAL PULMONARY HYPERTENSION DIAGNOSED AS REQUIRING LUNG TRANSPLANTATION. Chest 2019. [DOI: 10.1016/j.chest.2019.02.313] [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: 11/26/2022] Open
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Yamashita N, Tanabata S, Ohtake N, Sueyoshi K, Sato T, Higuchi K, Saito A, Ohyama T. Effects of Different Chemical Forms of Nitrogen on the Quick and Reversible Inhibition of Soybean Nodule Growth and Nitrogen Fixation Activity. Front Plant Sci 2019; 10:131. [PMID: 30838008 PMCID: PMC6389793 DOI: 10.3389/fpls.2019.00131] [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] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 01/25/2019] [Indexed: 05/19/2023]
Abstract
It has been reported that supply of nitrate to culture solution rapidly and reversibly inhibits nodule growth and nitrogen fixation activity of soybean. In this study, the effects of ammonium, urea, or glutamine on nodule growth and nitrogen fixation activity are compared with that for nitrate. Soybean plants were cultivated with a nitrogen-free nutrient solution, then 1 mM-N of nitrate, ammonium, glutamine, or urea were supplied from 12 DAP until 17 DAP. Repression of nodule growth and nitrogen fixation activity at 17 DAP were observed by ammonium, urea, and glutamine like nitrate, although the inhibitory effects were milder than nitrate. The removal of nitrogen from the culture solutions after nitrogen treatments resulted in a recovery of the nodule growth. It was found that the glutamine treatment followed by N-free cultivation gave highest nitrogen fixation activity about two times of the control. Tracer experiments with 15N and 13C were performed to evaluate the translocation of N and C to the different tissues. Culture solutions containing a 15N-labeled nitrogen source were supplied from 21 DAP, and the whole shoots were exposed to 13CO2 for 60 min on 23 DAP, and plants were harvested on 24 DAP. The percentage distribution of 15N in nodules was highest for ammonium (1.4%) followed by glutamine (0.78%), urea (0.32%) and nitrate (0.25%). The percentage distribution of 13C in the nodules was highest for the control (11.5%) followed by urea (5.8%), glutamine (2.6%), ammonium (2.3%), and nitrate (2.3%). The inhibitory effects of nitrogen compounds appeared to be related to a decrease in photoassimilate partitioning in the nodules, rather than 15N transport into the nodules. The free amino acid concentrations after nitrogen treatments were increased in the nodules and leaves by nitrate, in the roots by ammonium, in the stems by urea, and the roots, stems, and leaves by glutamine treatment. The concentrations of asparagine, aspartate, and glutamine were increased after nitrogen treatments. By the long-term supply of nitrogen for 2-weeks, nitrate significantly increased the lateral roots and leaf growth. The long-term supply of urea and glutamine also promoted the lateral roots and leaf growth, but ammonium suppressed them.
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Affiliation(s)
| | | | | | - Kuni Sueyoshi
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | - Takashi Sato
- Faculty of Bioresource Sciences, Akita Prefectural University, Akita, Japan
| | - Kyoko Higuchi
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Akihiro Saito
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
| | - Takuji Ohyama
- Faculty of Agriculture, Niigata University, Niigata, Japan
- Faculty of Applied Biosciences, Tokyo University of Agriculture, Tokyo, Japan
- *Correspondence: Takuji Ohyama, ;
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Tanaka N, Uraguchi S, Kajikawa M, Saito A, Ohmori Y, Fujiwara T. A rice PHD-finger protein OsTITANIA, is a growth regulator that functions through elevating expression of transporter genes for multiple metals. Plant J 2018; 96:997-1006. [PMID: 30194869 DOI: 10.1111/tpj.14085] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 06/08/2023]
Abstract
Essential metal absorption for plant growth is mediated predominantly by metal-specific transporters, with expression that responds to the environmental or cellular conditions of specific metals. Differing from metal-specific regulation, we describe a constitutively expressed transcription factor that regulates the transport of several metals in rice. We characterized the rice mutant LOW CADMIUM 5 (LC5), which exhibited reduced growth and accumulation of essential metals (e.g., copper [Cu], zinc [Zn] and manganese [Mn]) in shoots. LC5 was dwarf and developed less tillers than the wild type, but the structure of vasculature was apparently normal. Molecular genetic analysis revealed that the causal gene of LC5 is an ortholog of the transcriptional regulator Arabidopsis thaliana TITANIA (TTA), known as a transcriptional regulator. Expression analyses demonstrated that the OsTTA gene encodes a nucleus-localized protein containing a plant homeodomain-finger (PHD-finger) domain and is expressed ubiquitously in rice plants. RNA sequencing and quantitative PCR analyses revealed that the mRNA accumulation of transporter genes for essential metals, including iron (Fe), Zn, or Mn, were substantially lower in LC5 roots than in the wild type. Unlike known transcription factors of metal transport regulation, OsTTA transcript accumulation was not affected by metal availability. In addition, the growth defect of LC5 was partially rescued by Fe, Zn, or Mn supplementation, respectively. Taken together, OsTTA is a constitutively expressed regulator of multiple metal transporter genes responsible for essential metals delivery to shoots for their normal growth.
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Affiliation(s)
- Nobuhiro Tanaka
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shimpei Uraguchi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masataka Kajikawa
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Akihiro Saito
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yoshihiro Ohmori
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Toru Fujiwara
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Azakami D, Saito A, Ochiai K, Ishiwata T, Takahashi K, Kaji N, Kaji D, Kaji N, Michishita M. Chronic Basophilic Leukaemia in a Dog. J Comp Pathol 2018; 166:5-8. [PMID: 30691606 DOI: 10.1016/j.jcpa.2018.10.170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 09/20/2018] [Accepted: 10/22/2018] [Indexed: 10/27/2022]
Abstract
A 13-year-old neutered female mixed-breed dog with a clinical history of emaciation, inappetence and vomiting for 2 months was presented. Blood tests showed marked leucocytosis with increased neutrophil and basophil count, mild thrombocytosis and anaemia. Seven days after the initial visit, the dog died and was submitted for necropsy examination. Grossly, the bone marrow was red in colour and hepatomegaly and splenomegaly with discolouration were observed. A bone marrow smear showed an increased proportion of basophilic lineage cells. Histologically, the bone marrow showed high cellular density and numerous basophilic lineage cells with a round or segmented nucleus. The cytoplasm contained basophilic granules exhibiting metachromasia on toluidine blue staining. Immunohistochemically, the neoplastic basophils were diffusely positive for vimentin and myeloperoxidase, but negative for CD3, BLA36, CD163, CD204 and c-kit. The immunohistochemical features of neoplastic basophils that had invaded the liver and spleen were similar to those of the basophils in the bone marrow. Based on the clinicopathological and histopathological findings, chronic basophilic leukaemia was diagnosed. The present case study provides insights into the pathological features of chronic basophilic leukaemia in dogs.
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Affiliation(s)
- D Azakami
- Department of Veterinary Nursing, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - A Saito
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - K Ochiai
- Department of Basic Science, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - T Ishiwata
- Division of Aging and Carcinogenesis, Research Team for Geriatric Pathology, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - K Takahashi
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - N Kaji
- Kaji Animal Clinic, Fukuoka, Japan
| | - D Kaji
- Kaji Animal Clinic, Fukuoka, Japan
| | - N Kaji
- Kaji Animal Clinic, Fukuoka, Japan
| | - M Michishita
- Department of Veterinary Pathology, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan.
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Okiyama N, Inoue S, Saito A, Nakamura Y, Ishitsuka Y, Fujisawa Y, Watanabe R, Fujimoto M. Antihelix/helix violaceous macules in Japanese patients with anti-melanoma differentiation-associated protein 5 (MDA5) antibody-associated dermatomyositis. Br J Dermatol 2018; 180:1226-1227. [PMID: 30431155 DOI: 10.1111/bjd.17431] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- N Okiyama
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - S Inoue
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - A Saito
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - Y Nakamura
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - Y Ishitsuka
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - Y Fujisawa
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - R Watanabe
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
| | - M Fujimoto
- University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575,, Japan
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Iinuma C, Saito A, Ohnuma T, Tenconi E, Rosu A, Colson S, Mizutani Y, Liu F, Świątek-Połatyńska M, van Wezel GP, Rigali S, Fujii T, Miyashita K. NgcE Sco Acts as a Lower-Affinity Binding Protein of an ABC Transporter for the Uptake of N,N'-Diacetylchitobiose in Streptomyces coelicolor A3(2). Microbes Environ 2018; 33:272-281. [PMID: 30089751 PMCID: PMC6167110 DOI: 10.1264/jsme2.me17172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
In the model species Streptomyces coelicolor A3(2), the uptake of chitin-degradation byproducts, mainly N,N′- diacetylchitobiose ([GlcNAc]2) and N-acetylglucosamine (GlcNAc), is performed by the ATP-binding cassette (ABC) transporter DasABC-MsiK and the sugar-phosphotransferase system (PTS), respectively. Studies on the S. coelicolor chromosome have suggested the occurrence of additional uptake systems of GlcNAc-related compounds, including the SCO6005–7 cluster, which is orthologous to the ABC transporter NgcEFG of S. olivaceoviridis. However, despite conserved synteny between the clusters in S. coelicolor and S. olivaceoviridis, homology between them is low, with only 35% of residues being identical between NgcE proteins, suggesting different binding specificities. Isothermal titration calorimetry experiments revealed that recombinant NgcESco interacts with GlcNAc and (GlcNAc)2, with Kd values (1.15 and 1.53 μM, respectively) that were higher than those of NgcE of S. olivaceoviridis (8.3 and 29 nM, respectively). The disruption of ngcESco delayed (GlcNAc)2 consumption, but did not affect GlcNAc consumption ability. The ngcESco-dasA double mutation severely decreased the ability to consume (GlcNAc)2 and abolished the induction of chitinase production in the presence of (GlcNAc)2, but did not affect the GlcNAc consumption rate. The results of these biochemical and reverse genetic analyses indicate that NgcESco acts as a (GlcNAc)2- binding protein of the ABC transporter NgcEFGSco-MsiK. Transcriptional and biochemical analyses of gene regulation demonstrated that the ngcESco gene was slightly induced by GlcNAc, (GlcNAc)2, and chitin, but repressed by DasR. Therefore, a model was proposed for the induction of the chitinolytic system and import of (GlcNAc)2, in which (GlcNAc)2 generated from chitin by chitinase produced leakily, is mainly transported via NgcEFG-MsiK and induces the expression of chitinase genes and dasABCD.
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Affiliation(s)
- Chiharu Iinuma
- Department of Nanobiology, Graduate School of Advanced Integration Science, Chiba University
| | - Akihiro Saito
- Department of Nanobiology, Graduate School of Advanced Integration Science, Chiba University.,Department of Materials and Life Science, Shizuoka Institute of Science and Technology
| | | | - Elodie Tenconi
- InBioS-Center for Protein Engineering, Institut de Chimie B6a, University of Liège
| | - Adeline Rosu
- InBioS-Center for Protein Engineering, Institut de Chimie B6a, University of Liège
| | - Séverine Colson
- InBioS-Center for Protein Engineering, Institut de Chimie B6a, University of Liège
| | - Yuuki Mizutani
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology
| | - Feng Liu
- Department of Nanobiology, Graduate School of Advanced Integration Science, Chiba University
| | | | | | - Sébastien Rigali
- InBioS-Center for Protein Engineering, Institut de Chimie B6a, University of Liège
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Inoue S, Okiyama N, Shobo M, Motegi S, Hirano H, Nakagawa Y, Saito A, Nakamura Y, Ishitsuka Y, Fujisawa Y, Watanabe R, Fujimoto M. Diffuse erythema with ‘angel wings’ sign in Japanese patients with anti-small ubiquitin-like modifier activating enzyme antibody-associated dermatomyositis. Br J Dermatol 2018; 179:1414-1415. [DOI: 10.1111/bjd.17026] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- S. Inoue
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - N. Okiyama
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - M. Shobo
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - S. Motegi
- Department of Dermatology, Graduate School of Medicine; Gunma University; Gunma Japan
| | - H. Hirano
- Department of Neurology; Kansai Electric Power Hospital; Osaka Japan
| | - Y. Nakagawa
- Department of Neurology; Shizuoka General Hospital; Shizuoka Japan
| | - A. Saito
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - Y. Nakamura
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - Y. Ishitsuka
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - Y. Fujisawa
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - R. Watanabe
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
| | - M. Fujimoto
- Department of Dermatology, Faculty of Medicine; University of Tsukuba; Ibaraki Japan
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Shiga T, Mori H, Uemura K, Moriuchi R, Dohra H, Yamawaki-Ogata A, Narita Y, Saito A, Kotsuchibashi Y. Evaluation of the Bactericidal and Fungicidal Activities of Poly([2-(methacryloyloxy)ethyl]trimethyl Ammonium Chloride)(Poly (METAC))-Based Materials. Polymers (Basel) 2018; 10:E947. [PMID: 30960872 PMCID: PMC6403553 DOI: 10.3390/polym10090947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 07/27/2018] [Revised: 08/18/2018] [Accepted: 08/21/2018] [Indexed: 11/17/2022] Open
Abstract
Poly([2-(methacryloyloxy)ethyl]trimethyl ammonium chloride) (METAC) and the gels were prepared and evaluated for their bactericidal and fungicidal activities. The antimicrobial properties of poly(METAC) were tested against Escherichia coli (E. coli), Bacillus subtilis (B. subtilis), Saccharomyces cerevisiae (Sa. cerevisiae), methicillin-susceptible Staphylococcus aureus (MSSA), methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa (P. aeruginosa), and Candida albicans (C. albicans). Moreover, the structural forms of the linear and cross-linked poly(METAC) were investigated for their influences on bacterial aggregation, precipitation, and cell-death. To our knowledge, this is the first report on the comparison of the antimicrobial properties of poly(METAC) and poly(METAC)-gels. The bactericidal and fungicidal activities were evaluated by determining minimum inhibitory concentrations (MICs), UV⁻Vis spectroscopy, and fluorescence and confocal microscopies. The MICs were found to be 123 (MSSA), 123 (MRSA), 123 (P. aeruginosa), 370 (E. coli), 123 (B. subtilis), 370 (C. albicans), and 370 μg/mL (Sa. cerevisiae), as determined by broth dilution, and 370 (MSSA), 370 (MRSA), 370 (P. aeruginosa), 3300 (E. coli), 370 (B. subtilis), 1100 (C. albicans), and >10,000 μg/mL (Sa. cerevisiae), as determined by paper disc diffusion (on solid medium). The poly(METAC)-gels achieved rapid adsorption/precipitation of bacteria via the cationic surface charge. Thus, these poly(METAC)-based polymers can potentially be used as antibacterial materials.
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Affiliation(s)
- Toshiki Shiga
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan.
| | - Hiromitsu Mori
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan.
| | - Keiichi Uemura
- Chutoen-General Medical Center, 1-1 Shobugaike, Kakegawa, Shizuoka 436-8555, Japan.
| | - Ryota Moriuchi
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan.
| | - Hideo Dohra
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan.
| | - Aika Yamawaki-Ogata
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan.
| | - Yuji Narita
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan.
| | - Akihiro Saito
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan.
| | - Yohei Kotsuchibashi
- Department of Materials and Life Science, Shizuoka Institute of Science and Technology, 2200-2 Toyosawa, Fukuroi, Shizuoka 437-8555, Japan.
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Nambu H, Takada S, Fukushima A, Matsumoto J, Kakutani N, Maekawa S, Shirakawa R, Furihata T, Nakajima T, Katayama T, Tsuda M, Saito A, Yokota T, Kinugawa S, Anzai T. P4774Empagliflozin improves exercise endurance via the activation of fatty acid oxidation in the skeletal muscle in murine model of post-infarct heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4774] [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: 11/12/2022] Open
Affiliation(s)
- H Nambu
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Takada
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - J Matsumoto
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - N Kakutani
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Maekawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - R Shirakawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Furihata
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Nakajima
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Katayama
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - M Tsuda
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - A Saito
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular medicine, Sapporo, Japan
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Shirakawa R, Yokota T, Nakajima T, Takada S, Yamane M, Furihata T, Matsumoto J, Tsuda M, Katayama T, Maekawa S, Nambu H, Fukushima A, Saito A, Kinugawa S, Anzai T. 3143Excessive mitochondrial reactive oxygen species emission from circulating blood cells is associated with severity of heart failure and exercise intolerance. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.3143] [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)
- R Shirakawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Nakajima
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Takada
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - M Yamane
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Furihata
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - J Matsumoto
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - M Tsuda
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Katayama
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Maekawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - H Nambu
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - A Saito
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - S Kinugawa
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Sapporo, Japan
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Saito A, Hamano M, Kataoka H. Simultaneous analysis of multiple urinary biomarkers for the evaluation of oxidative stress by automated online in-tube solid-phase microextraction coupled with negative/positive ion-switching mode liquid chromatography-tandem mass spectrometry. J Sep Sci 2018; 41:2743-2749. [DOI: 10.1002/jssc.201800175] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 04/07/2018] [Accepted: 04/10/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Akihiro Saito
- School of Pharmacy; Shujitsu University; Okayama Japan
| | - Mariko Hamano
- School of Pharmacy; Shujitsu University; Okayama Japan
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47
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Nitta D, Kinugawa K, Yokota J, Endo M, Tsuji M, Saito A, Minatsuki S, Amiya E, Hatano M, Ono M, Komuro I. The Presence of Microchannel in Optical Coherence Tomography is Associated With the Plaque Volume of Cardiac Allograft Vasculopathy After Heart Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1071] [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] Open
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Tabeta K, Hosojima M, Nakajima M, Miyauchi S, Miyazawa H, Takahashi N, Matsuda Y, Sugita N, Komatsu Y, Sato K, Ishikawa T, Akiishi K, Yamazaki K, Kato K, Saito A, Yoshie H. Increased serum PCSK9, a potential biomarker to screen for periodontitis, and decreased total bilirubin associated with probing depth in a Japanese community survey. J Periodontal Res 2018. [DOI: 10.1111/jre.12533] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- K. Tabeta
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - M. Hosojima
- Department of Clinical Nutrition Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - M. Nakajima
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - S. Miyauchi
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - H. Miyazawa
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - N. Takahashi
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - Y. Matsuda
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - N. Sugita
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - Y. Komatsu
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - K. Sato
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
| | - T. Ishikawa
- Division of Clinical Nephrology and Rheumatology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - K. Akiishi
- Reagent R&D Department; Denka Seiken Co., Ltd.; Niigata Japan
| | - K. Yamazaki
- Laboratory of Periodontology and Immunology; Department of Oral Health and Welfare; Faculty of Dentistry; Niigata University; Niigata Japan
| | - K. Kato
- Department of Laboratory Medicine and Clinical Epidemiology for Prevention of Noncommunicable Diseases; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - A. Saito
- Department of Applied Molecular Medicine; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - H. Yoshie
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Science; Niigata Japan
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Immel TJ, England SL, Mende SB, Heelis RA, Englert CR, Edelstein J, Frey HU, Korpela EJ, Taylor ER, Craig WW, Harris SE, Bester M, Bust GS, Crowley G, Forbes JM, Gérard JC, Harlander JM, Huba JD, Hubert B, Kamalabadi F, Makela JJ, Maute AI, Meier RR, Raftery C, Rochus P, Siegmund OHW, Stephan AW, Swenson GR, Frey S, Hysell DL, Saito A, Rider KA, Sirk MM. The Ionospheric Connection Explorer Mission: Mission Goals and Design. Space Sci Rev 2017; 214:13. [PMID: 33758433 PMCID: PMC7983873 DOI: 10.1007/s11214-017-0449-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/17/2017] [Indexed: 06/01/2023]
Abstract
The Ionospheric Connection Explorer, or ICON, is a new NASA Explorer mission that will explore the boundary between Earth and space to understand the physical connection between our world and our space environment. This connection is made in the ionosphere, which has long been known to exhibit variability associated with the sun and solar wind. However, it has been recognized in the 21st century that equally significant changes in ionospheric conditions are apparently associated with energy and momentum propagating upward from our own atmosphere. ICON's goal is to weigh the competing impacts of these two drivers as they influence our space environment. Here we describe the specific science objectives that address this goal, as well as the means by which they will be achieved. The instruments selected, the overall performance requirements of the science payload and the operational requirements are also described. ICON's development began in 2013 and the mission is on track for launch in 2017. ICON is developed and managed by the Space Sciences Laboratory at the University of California, Berkeley, with key contributions from several partner institutions.
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Affiliation(s)
- T J Immel
- University of California, Berkeley, USA
| | - S L England
- Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
| | - S B Mende
- University of California, Berkeley, USA
| | - R A Heelis
- University of Texas at Dallas, Dallas, USA
| | - C R Englert
- Naval Research Laboratory, Washington, DC, USA
| | | | - H U Frey
- University of California, Berkeley, USA
| | | | | | - W W Craig
- University of California, Berkeley, USA
| | | | - M Bester
- University of California, Berkeley, USA
| | - G S Bust
- Applied Physics Laboratory, Laurel, MD, USA
| | | | - J M Forbes
- University of Colorado, Boulder, CO, USA
| | | | | | - J D Huba
- Naval Research Laboratory, Washington, DC, USA
| | - B Hubert
- University of Liège, Liège, Belgium
| | | | - J J Makela
- University of Illinois, Champaign-Urbana, USA
| | - A I Maute
- National Center for Atmospheric Research, Boulder, CO, USA
| | - R R Meier
- George Mason University, Fairfax, VA, USA
| | - C Raftery
- University of California, Berkeley, USA
- National Solar Observatory, Boulder, CO, USA
| | - P Rochus
- University of Liège, Liège, Belgium
| | | | - A W Stephan
- Naval Research Laboratory, Washington, DC, USA
| | - G R Swenson
- University of Illinois, Champaign-Urbana, USA
| | - S Frey
- University of California, Berkeley, USA
| | | | - A Saito
- Kyoto University, Kyoto, Japan
| | - K A Rider
- University of California, Berkeley, USA
| | - M M Sirk
- University of California, Berkeley, USA
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Corassa M, De Sa V, Werneck I, Lima V, Saito A, Molin GD, De Macedo M, Ferreira E, Carraro D, Freitas H. P3.02-060 EGFR Mutation Status by Three Sequencing Platforms in 704 Non-Small Cell Lung Cancer (NSCLC) Brazilian Patients. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1589] [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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