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Kajikawa Y, Ueda A, Ikeda M, Hirota M. Estimation of brain natriuretic peptide values from N-terminal pro brain natriuretic peptide levels and other factors. Eur Heart J 2023. [DOI: 10.1093/eurheartj/ehac779.044] [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: 01/26/2023] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Backgrounds
Both brain natriuretic peptide (BNP) and N-terminal proBNP (NT-pro BNP) are established biomarkers that are necessary in the diagnosis and management of heart failure (HF). Recently with the introduction of angiotensin receptor-neprilysin inhibitor in the treatment of HF, the course of HF is now assessed using NT-ProBNP levels1). However, it is difficult to infer BNP concentration from NT-proBNP levels for a physician who is familiar with BNP. Generally, simultaneous measurement of BNP and NT-proBNP is not permitted in medical insurance.
Purpose
To estimate BNP concentration from NT-proBNP levels and other factors as an equivalent prognostic strength compared to the actual BNP concentration.
Methods
From August 2021 to October 2021, we measured BNP and NT-proBNP levels of patients who were known or suspected to have HF (n=200). We created a formula for estimating BNP concentration from the data of NT-proBNP, age, body mass index (BMI), white cell counts, hemoglobin (Hb), estimated glemerular filtration rate) (eGFR) and C-reactive protein (CRP) using multivariate analysis.
Results
Patients’ background were as follows: age 66.4±23.6 years, male /female : 112/88 , BMI: 23.1±5.2 kg/m2, Hb level: 12.3±2.2 g/dL, albmine level: 3.7±0.7 g/dL, eGFR level: 63.3±27.0 mL/min/1.73m², CRP level; 1.80±4.67 mg/dL, BNP level: 103.3±207.9 pg/mL, NT-proBNP level: 1,505.1±3,479.6 pg/mL (mean ± SD). There was a strong correlation between BNP concentration and NT-proBNP level when using actual measured values (r= 0.84) and when using log-transformed values (r=0.92) in these patients.Using multiple regression analysis, we created an equation that estimated
LogBNP=-0.864+0.734×LogNT-proBNP+0.005×age-0.003×eGFR-0.009×BMI+0.016×CRP (R²=0.89).
Conclusion
This equation will be useful, especially for a physician who is not familiar with NT-proBNP. Testing BNP concentrations were reliably estimated from an equation featuring NT-proBNP, eGFR, age, BMI and CRP2),3),4).
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Affiliation(s)
- Y Kajikawa
- Fukuyama Medical Center , Fukuyama , Japan
| | - A Ueda
- Fukuyama Medical Center , Fukuyama , Japan
| | - M Ikeda
- Fukuyama Medical Center , Fukuyama , Japan
| | - M Hirota
- Fukuyama Medical Center , Fukuyama , Japan
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2
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Kojima H, Nakada T, Yagami A, Todo H, Nishimura J, Yagi M, Yamamoto K, Sugiyama M, Ikarashi Y, Sakaguchi H, Yamaguchi M, Hirota M, Aizawa S, Nakagawa S, Hagino S, Hatao M. A step-by-step approach for assessing acute oral toxicity without animal testing for additives of quasi-drugs and cosmetic ingredients. Curr Res Toxicol 2022; 4:100100. [PMID: 36619289 PMCID: PMC9816657 DOI: 10.1016/j.crtox.2022.100100] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 12/05/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Animal testing of cosmetic ingredients and products has been banned in the European Union since 2013. However, in Japan, the application of new quasi-drugs requires the generation of data on acute oral toxicity through animal testing. A weight of evidence approach for assessing oral toxicity was challenged. This approach used a combination of safety data, including a neutral red uptake cytotoxicity assay using BALB/c3T3 cells (3T3-NRU cytotoxicity assay), which can assess the acute oral toxicity of quasi-drugs or cosmetic ingredients. We conclude that the step-by-step approach can be used to assess test substances that cause low acute oral toxicity, such as the median lethal dose (LD 50) > 2000 mg/kg, thereby avoiding animal testing.
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Affiliation(s)
- Hajime Kojima
- National Institute of Health Sciences, Japan,Corresponding author at: 3-25-26 Tonoma-chi, Kawasaki-ku, Kawasaki 210-9501, Japan.
| | | | - Akiko Yagami
- Fujita Health University School of Medicine, Japan
| | | | | | - Mio Yagi
- Pharmaceuticals and Medical Devices Agency, Japan
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3
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Ohtake T, Hirota M. Causes and countermeasure for blank absorbance increase in the ROS assay. J Toxicol Sci 2022; 47:109-116. [PMID: 35236802 DOI: 10.2131/jts.47.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A reactive oxygen species (ROS) assay is an in chemico photoreactivity test listed in ICH S10 guideline and OECD Test Guideline No. 495. We currently utilize the ROS assay to assess the photosafety of cosmetic ingredients. We have recently confronted a problem that there was an absorbance increase of blank assessing superoxide anion generation after irradiation, whereas this did not occur in the negative control (sulisobenzone), leading to a dissatisfaction of the acceptance criteria. Therefore, we aimed to investigate the causes and find countermeasures. No significant effects of impurities and manufacturer differences of sodium phosphate and DMSO on blank absorbance increases were observed. In contrast, when Cu2+ was added to the buffer, the increase of blank absorbance after irradiation did not occur. We then confirmed the dose-response relationship and found that adding 0.1 μM of Cu2+ (corresponding to 6 ppb of Cu2+) was sufficient in suppressing the blank absorbance increase, suggesting the need of Cu2+ supplementation to the buffer. Finally, we confirmed that the ROS assay using the buffer supplemented with 0.1 μM of Cu2+ obtained stable test results by using 17 proficiency chemicals listed in TG 495. Our results suggest that the modified ROS assay protocol would be useful for obtaining stable test results.
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4
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Ohtake H, Tokuyoshi Y, Iyama Y, Nukaga T, Nishida H, Ohtake T, Hirota M, Yamada K, Seto Y, Sato H, Kouzuki H, Onoue S. Reactive oxygen species (ROS) assay-based photosafety screening for complex ingredients: Modification of the ROS assay protocol. J Toxicol Sci 2022; 47:483-492. [DOI: 10.2131/jts.47.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroto Ohtake
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yasuharu Tokuyoshi
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yosuke Iyama
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | | | | | | | | | - Kohei Yamada
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | - Yoshiki Seto
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | - Hideyuki Sato
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
| | | | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka
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5
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Imai N, Takeyoshi M, Aizawa S, Tsurumaki M, Kurosawa M, Toyoda A, Sugiyama M, Kasahara K, Ogata S, Omori T, Hirota M. Improved performance of the SH test as an in vitro skin sensitization test with a new predictive model and decision tree. J Appl Toxicol 2021; 42:1029-1043. [PMID: 34927266 DOI: 10.1002/jat.4275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/09/2022]
Abstract
Demands for the elimination and replacement of animal experiments for cosmetic safety assessment have increased in recent years. Evaluation of skin sensitization, however, is a critical issue in cosmetic safety assessment. The SH test is an in vitro skin sensitization test method that evaluates protein binding of chemical substances, which is an important event in skin sensitization. We previously verified the technical transferability and between-laboratory reproducibility of the SH test, a domestic test method for which no scientific research has been conducted, and improved the protocol, but also noted some unresolved issues. Therefore, in the present study, we successfully improved the operational efficiency and clarity of the final judgment of the SH test by (i) developing a new decision-making system that can make a final judgment without statistical processing, (ii) changing the statistical method, and (iii) evaluating and determining the maximum number of repetitions necessary for optimal efficiency. The improved SH test was verified by comparing it with existing test methods already adopted by the Organization for Economic Cooperation and Development. The results of this study demonstrated excellent performance of the improved SH test, with high reproducibility, reliable predictability, and good operational efficiency. The predictive performance of the improved method does not differ significantly from that of the conventional method, although it is clearer and more efficient. Therefore, the results of the present improved method are consistent with those obtained using the conventional method, with higher efficiency.
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Affiliation(s)
- Noriyasu Imai
- Safety and Analytical Research Laboratories, KOSÉ Corporation, Tokyo, Japan.,Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
| | - Midori Takeyoshi
- Safety and Analytical Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Sakiko Aizawa
- Safety and Analytical Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Mika Tsurumaki
- Safety and Analytical Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Masaharu Kurosawa
- Safety and Analytical Research Laboratories, KOSÉ Corporation, Tokyo, Japan
| | - Akemi Toyoda
- Frontier Research Laboratories, POLA Chemical Industries, Inc., Yokohama, Japan
| | - Maki Sugiyama
- Frontier Research Laboratories, POLA Chemical Industries, Inc., Yokohama, Japan
| | - Kaoru Kasahara
- Frontier Research Laboratories, POLA Chemical Industries, Inc., Yokohama, Japan
| | - Shinichi Ogata
- Graduate School of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
| | - Takashi Omori
- Division of Biostatistics Department of Social/Community Medicine and Health Science, Kobe University School of Medicine, Kobe, Japan
| | - Morihiko Hirota
- Brand Value R&D Institute, Shiseido Co., Ltd., Yokohama, Japan
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6
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Nishida H, Ohtake T, Ashikaga T, Hirota M, Onoue S, Seto Y, Tokura Y, Kouzuki H. In chemico sequential testing strategy for assessing the photoallegic potential. Toxicol In Vitro 2021; 77:105245. [PMID: 34509602 DOI: 10.1016/j.tiv.2021.105245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/31/2021] [Accepted: 09/06/2021] [Indexed: 11/28/2022]
Abstract
Several non-animal testing methods to assess photoallergic potential have been developed so far, while none of them have yet to be validated and regulatory accepted. Currently, some photoreactivity assays such as UV-VIS spectral analysis and ROS assay are generally used for initial photosafety assessments because of their high sensitivity. However, they have a low specificity, generating a high percentage of false positive results, and the development of a follow-up assessment method is desired. Therefore, this study aimed to develop an in chemico photoallergy testing method, photo-direct peptide reactivity assay (photo-DPRA). Based on photosafety information, 34 photoallergens and 16 non-photoallergens were selected and subjected to UV-VIS spectral analysis, ROS/micellar ROS assays, photo-DPRA, sequential testing strategy (STS) consisting of all three methods, and 3T3 neutral red uptake phototoxicity testing (3T3 NRU PT). Combination of the methods addressing the key events of photoallergy exhibited high prediction performance. Our results showed the proposed strategy would be useful to predict the photoallergic potential of chemicals as the follow-up assessment for false positive chemicals by UV/VIS spectral analysis and ROS assay.
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Affiliation(s)
- Hayato Nishida
- Shiseido Global Innovation Center, 1-2-11, Takashima, Nishi-ku, Yokohama, Kanagawa 220-0011, Japan
| | - Toshiyuki Ohtake
- Shiseido Global Innovation Center, 1-2-11, Takashima, Nishi-ku, Yokohama, Kanagawa 220-0011, Japan.
| | - Takao Ashikaga
- Division of Risk Assessment, Center for Biological Safety and Research, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kanagawa 210-9501, Japan
| | - Morihiko Hirota
- Shiseido Global Innovation Center, 1-2-11, Takashima, Nishi-ku, Yokohama, Kanagawa 220-0011, Japan
| | - Satomi Onoue
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshiki Seto
- Laboratory of Biopharmacy, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yoshiki Tokura
- Allergic Disease Research Center, Chutoen General Medical Center, 1-1 Shobugaike, Kakegawa, Shizuoka 436-0040, Japan
| | - Hirokazu Kouzuki
- Shiseido Global Innovation Center, 1-2-11, Takashima, Nishi-ku, Yokohama, Kanagawa 220-0011, Japan
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7
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Imai N, Takeyoshi M, Aizawa S, Tsurumaki M, Kurosawa M, Toyoda A, Sugiyama M, Kasahara K, Hirota M, Ogata S. Enhancing between-facility reproducibility of the SH test as an in vitro skin sensitization test by the improved test method. J Toxicol Sci 2021; 46:235-248. [PMID: 33952800 DOI: 10.2131/jts.46.235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
There has been an increased demand to eliminate animal experiments and to replace the experiments with alternative tests for assessing the safety of cosmetics. The SH test is an in vitro skin sensitization test that evaluates the protein binding abilities of a test substance. Skin sensitization must be evaluated by multiple test methods. The SH test uses the same cell line and measuring instruments as the human Cell-Line Activation Test (h-CLAT), which is one of the test methods used to evaluate different key events and is listed in the OECD test guidelines. There are cost advantages to usher the SH test into facilities that are already running the h-CLAT. The SH test is conducted only at a facility that has developed the SH test because studies on the between-facility reproducibility and validity have not been performed. Therefore, to verify the transferability of the SH test and the between-facilities reproducibility, we evaluated the reproducibility of the SH test results at three facilities, including the development facility. After an initial round of testing, the protocol was refined as follows to improve reproducibility among the three facilities: i) determine the optimum pH range, ii) change the maximum applicable concentration of water-soluble substances, and iii) define the appropriate dispersion conditions for evaluating hydrophobic substances. These refinements markedly enhanced the between-facility reproducibility (from 76.0% to 96.0%) for the 25 substances evaluated in this study. This study confirmed that the SH test is an effective skin sensitization test method with high technical transferability and between-facility reproducibility.
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Affiliation(s)
- Noriyasu Imai
- Safety and Analytical Research Laboratories, KOSÉ Corporation.,Graduate School of Environment and Information Sciences, Yokohama National University
| | | | - Sakiko Aizawa
- Safety and Analytical Research Laboratories, KOSÉ Corporation
| | - Mika Tsurumaki
- Safety and Analytical Research Laboratories, KOSÉ Corporation
| | | | - Akemi Toyoda
- Frontier Research Center, POLA Chemical Industries, Inc
| | - Maki Sugiyama
- Frontier Research Center, POLA Chemical Industries, Inc
| | | | | | - Shinichi Ogata
- Graduate School of Environment and Information Sciences, Yokohama National University
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8
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Gilmour N, Kern PS, Alépée N, Boislève F, Bury D, Clouet E, Hirota M, Hoffmann S, Kühnl J, Lalko JF, Mewes K, Miyazawa M, Nishida H, Osmani A, Petersohn D, Sekine S, van Vliet E, Klaric M. Development of a next generation risk assessment framework for the evaluation of skin sensitisation of cosmetic ingredients. Regul Toxicol Pharmacol 2020; 116:104721. [DOI: 10.1016/j.yrtph.2020.104721] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 12/17/2022]
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9
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Hisaki T, Kaneko MAN, Hirota M, Matsuoka M, Kouzuki H. Integration of read-across and artificial neural network-based QSAR models for predicting systemic toxicity: A case study for valproic acid. J Toxicol Sci 2020; 45:95-108. [PMID: 32062621 DOI: 10.2131/jts.45.95] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We present a systematic, comprehensive and reproducible weight-of-evidence approach for predicting the no-observed-adverse-effect level (NOAEL) for systemic toxicity by using read-across and quantitative structure-activity relationship (QSAR) models to fill gaps in rat repeated-dose and developmental toxicity data. As a case study, we chose valproic acid, a developmental toxicant in humans and animals. High-quality in vivo oral rat repeated-dose and developmental toxicity data were available for five and nine analogues, respectively, and showed qualitative consistency, especially for developmental toxicity. Similarity between the target and analogues is readily defined computationally, and data uncertainties associated with the similarities in structural, physico-chemical and toxicological properties, including toxicophores, were low. Uncertainty associated with metabolic similarity is low-to-moderate, largely because the approach was limited to in silico prediction to enable systematic and objective data collection. Uncertainty associated with completeness of read-across was reduced by including in vitro and in silico metabolic data and expanding the experimental animal database. Taking the "worst-case" approach, the smallest NOAEL values among the analogs (i.e., 200 and 100 mg/kg/day for repeated-dose and developmental toxicity, respectively) were read-across to valproic acid. Our previous QSAR models predict repeated-dose NOAEL of 148 (males) and 228 (females) mg/kg/day, and developmental toxicity NOAEL of 390 mg/kg/day for valproic acid. Based on read-across and QSAR, the conservatively predicted NOAEL is 148 mg/kg/day for repeated-dose toxicity, and 100 mg/kg/day for developmental toxicity. Experimental values are 341 mg/kg/day and 100 mg/kg/day, respectively. The present approach appears promising for quantitative and qualitative in silico systemic toxicity prediction of untested chemicals.
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Affiliation(s)
- Tomoka Hisaki
- Shiseido Global Innovation Center.,Department of Hygiene and Public Health, Tokyo Women's Medical University
| | | | | | - Masato Matsuoka
- Department of Hygiene and Public Health, Tokyo Women's Medical University
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10
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Ikeda M, Kajikawa Y, Hirota M, Ueda A. P1547 Left ventricular papillary muscle strain as an indicator of hypertrophic cardiomyopathy. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.968] [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
Although recognized as part of the mitral valve complex, few studies have assessed the left ventricular papillary muscle.
We confirmed during autopsy that papillary muscle consists of longitudinal aligned muscle fibers, and that the papillary muscle originated from the left ventricular oblique muscle. Therefore, papillary muscle contraction was considered only in the longitudinal direction.
Purpose
We previously reported that left ventricular papillary muscle strain (LV-PMS) in 100 patients without organic heart disease was correlated with multiple left ventricular function assessment parameters.
This study aimed to determine whether left ventricular papillary muscle strain (LV-PMS) in patients with hypertrophic cardiomyopathy (HCM) is correlated with left ventricular function parameters as in non-HCM patients.
Methods
We measured left ventricular papillary muscle strain (LV-PMS) between two points on papillary muscles except where chordae adhere and the left ventricular wall, and compared values between patients without organic heart disease and with hypertrophic cardiomyopathy (HCM).
Among 1,344 patients who were assessed by echocardiography at our hospital between January and June 2018, we selected 42 (mean age, 68.9 ± 17.4 years; male, 67%) who did not have coronary heart disease and in whom left ventricular papillary muscle contraction strain (LV-PMS) could be determined. Obvious anterior and posterior papillary muscles were evaluated. We also analyzed age, EF, e’, s’, E/e’, E/A, left atrial volume index (LAV-I) and global longitudinal strain (GLS) as possibly relevant factors.
Results
Among the 42 patients, 22 (52%) and 17 (40%) had hypertension and HCM, respectively. We measured the strength of linear associations among paired variables (LV-PMS, age, EF, e’, s’, E/e’, E/A, LAV-I and GLS) using Pearson product-moment correlation coefficients.
Age (r = 0.64), e’ (r = -0.76), s’ (r = -0.61), LAV-I (r = 0.61) and GLS (r = 0.57; all p < 0.001), as well as E/e’ (r = 0.44, p < 0.05) significantly correlated in patients without HCM, whereas only GLS correlated in patients with HCM (r = 0.723, p < 0.001).
One-way analyses of variance showed that LV-PMS values significantly differed only among patients without HCM when categorized according to age < 50, ≥ 50 < 75 and > 75 years (p < 0.001), whereas these values significantly differed in all patients (p < 0.05) when categorized according to GLS < -20%, ≥ -20 to < -15% and > -15%.
Conclusions
We found that LV-PMS correlated with five factors including age in patients without HCM, but only with GLS in those with HCM. Despite the small study cohort, we considered that LV-PMS and GLS would be useful for evaluating left ventricular function in patients with HCM.
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Affiliation(s)
- M Ikeda
- Fukuyama Medical Center, Department of Cardiology, Fukuyama, Japan
| | - Y Kajikawa
- Fukuyama Medical Center, Department of Cardiology, Fukuyama, Japan
| | - M Hirota
- Fukuyama Medical Center, Department of Cardiology, Fukuyama, Japan
| | - A Ueda
- Fukuyama Medical Center, Department of Cardiology, Fukuyama, Japan
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11
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Sakai S, Matsuda R, Adachi R, Akiyama H, Maitani T, Ohno Y, Oka M, Abe A, Seiki K, Oda H, Shiomi K, Urisu A, Arakawa F, Futo S, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Kan K, Kanayama S, Koike T, Kojima K, Minegishi Y, Mori Y, Nishihara R, Sato H, Yamaguchi A, Yamakawa H, Yasuda K. Interlaboratory Evaluation of Two Enzyme-Linked Immunosorbent Assay Kits for the Determination of Crustacean Protein in Processed Foods. J AOAC Int 2019. [DOI: 10.1093/jaoac/91.1.123] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The labeling of foods containing material derived from crustaceans such as shrimp and crab is to become mandatory in Japan because of increases in the number of allergy patients. To ensure proper labeling, 2 novel sandwich enzyme-linked immunosorbent assay (ELISA) kits for the determination of crustacean protein in processed foods, the N kit (Nissui Pharmaceutical Co., Ltd, Ibaraki, Japan) and the M kit (Maruha Nichiro Holdings, Inc., Ibaraki, Japan), have been developed. Five types of model processed foods containing 10 and/or 11.9 g/g crustacean soluble protein were prepared for interlaboratory evaluation of the performance of these kits. The N kit displayed a relatively high level of reproducibility relative standard deviation (interlaboratory precision; 4.08.4 RSDR) and sufficient recovery (6586) for all the model processed foods. The M kit displayed sufficient reproducibility (17.620.5 RSDR) and a reasonably high level of recovery (82103). The repeatability relative standard deviation (RSDr) values regarding the detection of crustacean proteins in the 5 model foods were mostly <5.1 RSDr for the N kit and 9.9 RSDr for the M kit. In conclusion, the results of this interlaboratory evaluation suggest that both these ELISA kits would be very useful for detecting crustacean protein in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Rieko Matsuda
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Tamio Maitani
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Yasuo Ohno
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Michihiro Oka
- Nissui Pharmaceutical Co, Ltd, 1075-2, Hokunanmoro, Yuki, Ibaraki 307-0036, Japan
| | - Akihisa Abe
- Nippon Suisan Kaisha, Ltd, 559-6, Kitano-machi, Hachioji, Tokyo 192-0906, Japan
| | - Kohsuke Seiki
- Maruha Nichiro Holdings, Inc., 16-2, Wadai, Tsukuba, Ibaraki 300-4295, Japan
| | - Hiroshi Oda
- Maruha Nichiro Holdings, Inc., 16-2, Wadai, Tsukuba, Ibaraki 300-4295, Japan
| | - Kazuo Shiomi
- Tokyo University of Marine Science and Technology, 4-5-7, Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Atsuo Urisu
- Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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12
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Sakai S, Adachi R, Akiyama H, Teshima R, Doi H, Shibata H, Urisu A, Arakawa F, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Ikeno K, Kojima K, Maeda S, Minegishi Y, Mishima T, Oguchi K, Seki T, Yamakawa H, Yano T, Yasuda K. Determination of Walnut Protein in Processed Foods by Enzyme-Linked Immunosorbent Assay: Interlaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.4.1255] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Because food allergens from tree nuts, including walnuts, are a frequent cause of adverse food reactions for allergic patients, the labeling of foods containing ingredients derived from tree nuts is required in numerous countries. According to Japanese regulations, the labeling of food products containing walnuts is recommended. To ensure proper labeling, a novel sandwich ELISA kit for the determination of walnut protein in processed foods (Walnut Protein [2S-Albumin] Kit; Morinaga Institute of Biological Science, Inc.; walnut kit) has been developed. We prepared seven types of incurred samples (model processed foods: biscuits, bread, sponge cake, orange juice, jelly, chicken meatballs, and rice gruel) containing 10 g walnut soluble protein/g of food for use in interlaboratory evaluations of the walnut kit. The walnut kit displayed sufficient reproducibility relative standard deviations (interlaboratory precision: 5.89.9 RSDR) and a high level of recovery (81119) for all the incurred samples. All the repeatability relative standard deviation (RSDr) values for the incurred samples that were examined were less than 6.0. The results of this interlaboratory evaluation suggested that the walnut kit could be used as a precise and reliable tool for determination of walnut protein in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hirotoshi Doi
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Haruki Shibata
- Morinaga Institute of Biological Science, Inc., 2-1-16, Sachiura, Kanazawa-ku, Yokohama 236-0003, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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Sakai S, Adachi R, Akiyama H, Teshima R, Morishita N, Matsumoto T, Urisu A, Arakawa F, Endo Y, Haraguchi H, Hirose Y, Hirota M, Iidzuka T, Kojima K, Minegishi Y, Mishima T, Nishihara R, Seki T, Yamakawa H, Yano T, Yasuda K. Enzyme-Linked Immunosorbent Assay Kit for the Determination of Soybean Protein in Processed Foods: Interlaboratory Evaluation. J AOAC Int 2019. [DOI: 10.1093/jaoac/93.1.243] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The labeling of foods containing ingredients derived from soybean is recommended in Japan because of an increasing number of patients who are allergic to soybeans. To ensure proper labeling, a novel sandwich ELISA kit for the determination of soybean protein in processed foods (FASTKIT Ver. II, Soybean, Nippon Meat Packers, Inc.; soy kit) has been developed. Five types of incurred samples (model processed foods: rice gruel, sausage, sweet adzuki bean soup, sweet potato cake, and tomato sauce) containing 10 g soybean soluble protein/g food were prepared for use in interlaboratory evaluations of the soy kit. The soy kit displayed a sufficient RSDR value (interlaboratory precision: 9.313.4 RSDR) and a high level of recovery (97114) for all the incurred samples. The RSDr value for the incurred samples was mostly <4.8. The results of this interlaboratory evaluation suggest that the soy kit can be used as a precise and reliable tool for the determination of soybean proteins in processed foods.
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Affiliation(s)
- Shinobu Sakai
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Adachi
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Hiroshi Akiyama
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Reiko Teshima
- National Institute of Health Sciences, 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan
| | - Naoki Morishita
- R&D Center Nippon Meat Packers, Inc., 3-3, Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Takashi Matsumoto
- R&D Center Nippon Meat Packers, Inc., 3-3, Midorigahara, Tsukuba, Ibaraki 300-2646, Japan
| | - Atsuo Urisu
- Fujita Health University, The Second Teaching Hospital, 3-6-10, Otobashi, Nakagawa-ku, Nagoya 454-8509, Japan
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Kobara K, Tanetani M, Hirota M, Osaka H. Effect of a novel device with laser pointer in practicing posture control. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Hirota M, Ashikaga T, Kouzuki H. Development of an artificial neural network model for risk assessment of skin sensitization using human cell line activation test, direct peptide reactivity assay, KeratinoSens™ and in silico structure alert parameter. J Appl Toxicol 2017; 38:514-526. [DOI: 10.1002/jat.3558] [Citation(s) in RCA: 21] [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: 07/04/2017] [Revised: 09/19/2017] [Accepted: 10/03/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Morihiko Hirota
- Shiseido Global Innovation Center; Shiseido Co. Ltd.; 2-2-1 Hayabuchi, Tsuzuki-ku Yokohama-shi Kanagawa 224-8558 Japan
| | - Takao Ashikaga
- Shiseido Global Innovation Center; Shiseido Co. Ltd.; 2-2-1 Hayabuchi, Tsuzuki-ku Yokohama-shi Kanagawa 224-8558 Japan
| | - Hirokazu Kouzuki
- Shiseido Global Innovation Center; Shiseido Co. Ltd.; 2-2-1 Hayabuchi, Tsuzuki-ku Yokohama-shi Kanagawa 224-8558 Japan
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Hamabe Y, Hanai A, Ishiguro H, Kuroda T, Hirota M, Nomura M, Ishikawa H, Muto M. Effects of steroid ointment application on chemotherapy-induced phlebitis: A randomized, double-blind, placebo-controlled clinical trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx676.003] [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: 11/13/2022] Open
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17
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Fujimoto H, Hirota M, Kodama T, Greiner C, Hashimoto T. Violence exposure and resulting psychological effects suffered by psychiatric visiting nurses in Japan. J Psychiatr Ment Health Nurs 2017; 24:638-647. [PMID: 28840659 DOI: 10.1111/jpm.12412] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 11/27/2022]
Abstract
UNLABELLED WHAT IS KNOWN ON THE SUBJECT?: There is a developing body of research on violence in healthcare workplaces. Although psychiatric visiting nurses (PVNs) are an important group of professionals who provide medical services for people with mental disorders live in the community, little is known about the experiences and characteristics of violence exposure among PVNs, or the characteristics and work situations of PVNs related to violence exposure. WHAT THIS STUDY ADDS TO EXISTING KNOWLEDGE?: Approximately 40% of participants were exposed to violence during the previous 12 months; approximately 50% had been exposed during their PVN careers in PVN settings. The most frequent violence was verbal abuse. Longer career length as a PVN and greater number of visits per month were both positively associated with verbal abuse during the previous 12 months. Twenty-eight of the 34 participants (83%) who completed the IES-R-J survey had some residual psychological distress, and two (6%) had a potentially high risk of posttraumatic stress disorder. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: In devising policies and strategies against violence, PVN organizations and administrators should consider the characteristics of the violence, especially verbal abuse, as well as the characteristics and work situations of PVNs that are related to verbal abuse. Furthermore, they might provide relevant information on violence in PVN settings within their violence-prevention manuals or education. It would be important to provide support and to construct a safe workplace environment for PVNs who are experiencing residual psychological distress. ABSTRACT Introduction Psychiatric visiting nurses (PVNs) play a crucial role by providing medical services for community-living individuals with mental disorders in Japan. However, little is known about violence towards PVNs. Aim This cross-sectional study investigated violence during visits and the resulting psychological effects for PVNs. Methods PVNs were assessed using a violence exposure questionnaire and the Impact of Event Scale-Revised (IES-R-J); a measure of posttraumatic distress. Result Thirty-eight (41%) of 94 participants had experienced violence during the previous 12 months and 49 (53%) over their entire career. The most frequent violence was verbal abuse. Career length as a PVN and number of visits per month were significantly positively associated with verbal abuse during the previous 12 months. The IES-R-J scores indicated 28 of the 34 participants who completed the questionnaire exhibited psychological distress for the most traumatic violence during their career and two had a potentially high risk of posttraumatic stress disorder. Discussion and Implications Policies and strategies aimed at reducing violence in PVN settings should be developed according to characteristics of the violence, as well as the characteristics and work situation of PVNs. Furthermore, the provision of support and a safe workplace environment would be important for PVNs with residual psychological distress.
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Affiliation(s)
- H Fujimoto
- Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - M Hirota
- Kobe University Graduate School of Health Sciences, Kobe, Japan
| | | | - C Greiner
- Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - T Hashimoto
- Kobe University Graduate School of Health Sciences, Kobe, Japan
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Yoshida Z, Ogawa Y, Morikawa J, Furukawa M, Saitoh H, Hirota M, Hori D, Shiraishi J, Watanabe S, Numazawa S, Yano Y, Suzuki J. RT-1 Project: Magnetosphere-Like Plasma Experiment. Fusion Science and Technology 2017. [DOI: 10.13182/fst07-a1308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Z. Yoshida
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Y. Ogawa
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - J. Morikawa
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - M. Furukawa
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - H. Saitoh
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - M. Hirota
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - D. Hori
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - J. Shiraishi
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - S. Watanabe
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - S. Numazawa
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - Y. Yano
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - J. Suzuki
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
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Onoue S, Seto Y, Sato H, Nishida H, Hirota M, Ashikaga T, Api AM, Basketter D, Tokura Y. Chemical photoallergy: photobiochemical mechanisms, classification, and risk assessments. J Dermatol Sci 2017; 85:4-11. [DOI: 10.1016/j.jdermsci.2016.08.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 08/05/2016] [Indexed: 11/25/2022]
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Noura S, Ohue M, Hasegawa J, Hirota M, Matsumura T, Ito Y, Miyoshi N, Kobayashi H, Kotake K, Sugihara K. 177P New staging system for colorectal cancer patients with synchronous peritoneal metastasis in accordance with the Japanese Classification of Colorectal Carcinoma: A multi-institutional study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.010] [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: 11/14/2022] Open
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Noura S, Ohue M, Hasegawa J, Hirota M, Matsumura T, Ito Y, Miyoshi N, Kobayashi H, Kotake K, Sugihara K. 177P New staging system for colorectal cancer patients with synchronous peritoneal metastasis in accordance with the Japanese Classification of Colorectal Carcinoma: A multi-institutional study. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00335-5] [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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22
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Hirota M. Implant Stability Development of Photofunctionalized Implants Placed in Regular and Complex Cases: A Case-Control Study. J Oral Maxillofac Surg 2016. [DOI: 10.1016/j.joms.2016.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Although it has been shown that auricular chondritis in rats is caused by the use of metal identification ear tags, the pathogenesis remains unclear. Based on the hypothesis that the auricular chondritis is caused by metal ions released from metal identification ear tags, we investigated the pathogenesis in male C57BL/6 mice tagged with metal identification ear tags. Twenty-six weeks after the attachment of the ear tags, visible increases in the thickness of the auricle were observed, and the concentrations of copper and iron in the tagged ears were significantly increased ( P <.05) in the tagged ears compared with the untagged ears. There was up-regulation of metallothionein (MT)-I and MT-II mRNA in the tagged ears, and this was confirmed by immunohistologic staining of the destroyed cartilage. Histopathologically, there were observed severe chondritis with extensive granulomatous inflammation, newly formed cartilage nodules, and osseous metaplasia accompanied by cellular infiltrates, such as CD4 T lymphocyte, macrophages, neutrophils, and mast cells, and expression of Th1 cytokines, such as interferon-gamma, tumor necrosis factor-alpha, and interleukin-2 in the tagged ear. Based on these results, we concluded that the release of copper and iron ions from the metal ear tags played a major role in the onset of auricular chondritis. Subsequent cellular interactions, such as CD4 T cells, macrophages, fibroblasts, and mast cells, mediated by cytokines, such as tumor necrosis factor-alpha and interferon-gamma, caused an autoimmune response that may have led to the progression of auricular chondritis as an autoimmune disease.
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Affiliation(s)
- M Kitagaki
- Safety Research Laboratory, Quality Assurance Center, Shiseido Research Center, 2-12-1 Fukuura, Knazawa-ku, Yokohama-shi, 236-8643, Japan.
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Onoue S, Ohtake H, Suzuki G, Seto Y, Nishida H, Hirota M, Ashikaga T, Kouzuki H. Comparative study on prediction performance of photosafety testing tools on photoallergens. Toxicol In Vitro 2016; 33:147-52. [DOI: 10.1016/j.tiv.2016.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 01/21/2016] [Accepted: 03/06/2016] [Indexed: 10/22/2022]
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Oeda S, Hirota M, Nishida H, Ashikaga T, Sasa H, Aiba S, Tokura Y, Kouzuki H. Development of an in vitro photosensitization test based on changes of cell-surface thiols and amines as biomarkers: the photo-SH/NH 2 test. J Toxicol Sci 2016; 41:129-42. [DOI: 10.2131/jts.41.129] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Shiho Oeda
- Shiseido Research Center, Shiseido Co. Ltd
| | | | | | | | | | - Setsuya Aiba
- Department of Dermatology, Tohoku University Graduate School of Medicine
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine
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Tsujita-Inoue K, Hirota M, Atobe T, Ashikaga T, Tokura Y, Kouzuki H. Development of novel in vitro photosafety assays focused on the Keap1-Nrf2-ARE pathway. J Appl Toxicol 2015; 36:956-68. [PMID: 26511905 DOI: 10.1002/jat.3234] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 08/17/2015] [Accepted: 08/17/2015] [Indexed: 11/07/2022]
Abstract
Although photoallergens require UV energy for antigen formation, the subsequent immune response is considered to be the same as in ordinary skin sensitization. Therefore, in vitro tests for skin sensitization should also be applicable for photoallergy testing. In this study, we examined whether activation of the Keap1 (Kelch-like ECH-associated protein 1)-Nrf2 (nuclear factor-erythroid 2-related factor 2)-ARE (antioxidant response element) pathway could be used to assess the photoallergenic potential of chemicals, using the reporter cell line AREc32 or KeratinoSens(TM) . First, we identified an appropriate UVA irradiation dose [5 J cm(-2) irradiation in phosphate-buffered saline (PBS)] by investigating the effect of UV irradiation on ARE-dependent gene induction using untreated or 6-methylcoumarin (6-MC)-treated cells. Irradiation of well-known photoallergens under this condition increased ARE-dependent gene expression by more than 50% compared with both vehicle and non-irradiated controls. When the cut-off value for detecting photoallergens was set at 50% induction, the accuracy of predicting photoallergenic/phototoxic chemicals was 70% in AREc32 cells and 67% in KeratinoSens(TM) cells, and the specificity was 100% in each case. We designate these assays as a photo-ARE assay and photo-KeratinoSens(TM) , respectively. Our results suggest that activation of the Keap1-Nrf2-ARE pathway is an effective biomarker for evaluating both photoallergenic and phototoxic potentials. Either of the above tests might be a useful component of a battery of in vitro tests/in silico methods for predicting the photoallergenicity and phototoxicity of chemicals. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Kyoko Tsujita-Inoue
- Shiseido Research Center, Shiseido Co. Ltd, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa, 224-8558, Japan
| | - Morihiko Hirota
- Shiseido Research Center, Shiseido Co. Ltd, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa, 224-8558, Japan
| | - Tomomi Atobe
- Shiseido Research Center, Shiseido Co. Ltd, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa, 224-8558, Japan
| | - Takao Ashikaga
- Shiseido Research Center, Shiseido Co. Ltd, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa, 224-8558, Japan
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka, 431-3192, Japan
| | - Hirokazu Kouzuki
- Shiseido Research Center, Shiseido Co. Ltd, 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama, Kanagawa, 224-8558, Japan
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Iida M, Mitsudo K, Koizumi T, Nakashima H, Iwai T, Oguri S, Hirota M, Kioi M, Tohnai I. Thermochemoradiotherapy using retrograde superselective intra-arterial infusion for advanced oral cancer with cervical lymph node metastases. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.136] [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: 10/22/2022]
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Koizumi T, Mistudo K, Mistudo M, Oguri S, Iwai T, Nakashima H, Hirota M, Kioi M, Tohnai I. Chemoradiotherapy using retrograde superselective intra-arterial infusion for advanced oral cancer-therapeutic effect for squamous cell carcinoma of buccal mucosa. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.197] [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: 10/22/2022]
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29
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Nishida H, Hirota M, Seto Y, Suzuki G, Kato M, Kitagaki M, Sugiyama M, Kouzuki H, Onoue S. Non-animal photosafety screening for complex cosmetic ingredients with photochemical and photobiochemical assessment tools. Regul Toxicol Pharmacol 2015; 72:578-85. [DOI: 10.1016/j.yrtph.2015.05.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 11/30/2022]
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Hirota M, Fukui S, Okamoto K, Kurotani S, Imai N, Fujishiro M, Kyotani D, Kato Y, Kasahara T, Fujita M, Toyoda A, Sekiya D, Watanabe S, Seto H, Takenouchi O, Ashikaga T, Miyazawa M. Evaluation of combinations of in vitro sensitization test descriptors for the artificial neural network-based risk assessment model of skin sensitization. J Appl Toxicol 2015; 35:1333-47. [PMID: 25824844 DOI: 10.1002/jat.3105] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 11/04/2014] [Accepted: 11/22/2014] [Indexed: 11/06/2022]
Abstract
The skin sensitization potential of chemicals has been determined with the use of the murine local lymph node assay (LLNA). However, in recent years public concern about animal welfare has led to a requirement for non-animal risk assessment systems for the prediction of skin sensitization potential, to replace LLNA. Selection of an appropriate in vitro test or in silico model descriptors is critical to obtain good predictive performance. Here, we investigated the utility of artificial neural network (ANN) prediction models using various combinations of descriptors from several in vitro sensitization tests. The dataset, collected from published data and from experiments carried out in collaboration with the Japan Cosmetic Industry Association (JCIA), consisted of values from the human cell line activation test (h-CLAT), direct peptide reactivity assay (DPRA), SH test and antioxidant response element (ARE) assay for chemicals whose LLNA thresholds have been reported. After confirming the relationship between individual in vitro test descriptors and the LLNA threshold (e.g. EC3 value), we used the subsets of chemicals for which the requisite test values were available to evaluate the predictive performance of ANN models using combinations of h-CLAT/DPRA (N = 139 chemicals), the DPRA/ARE assay (N = 69), the SH test/ARE assay (N = 73), the h-CLAT/DPRA/ARE assay (N = 69) and the h-CLAT/SH test/ARE assay (N = 73). The h-CLAT/DPRA, h-CLAT/DPRA/ARE assay and h-CLAT/SH test/ARE assay combinations showed a better predictive performance than the DPRA/ARE assay and the SH test/ARE assay. Our data indicates that the descriptors evaluated in this study were all useful for predicting human skin sensitization potential, although combinations containing h-CLAT (reflecting dendritic cell-activating ability) were most effective for ANN-based prediction.
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Affiliation(s)
- Morihiko Hirota
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa, 224-8558, Japan
| | - Shiho Fukui
- Kanebo Cosmetics Inc., 3-28, Kotobukicho 5-chome, Odawara, Kanagawa, 250-0002, Japan
| | - Kenji Okamoto
- Kanebo Cosmetics Inc., 3-28, Kotobukicho 5-chome, Odawara, Kanagawa, 250-0002, Japan
| | - Satoru Kurotani
- Kose Corporation, 1-18-4 Azusawa, Itabashi-ku, Tokyo, 174-0051, Japan
| | - Noriyasu Imai
- Kose Corporation, 1-18-4 Azusawa, Itabashi-ku, Tokyo, 174-0051, Japan
| | - Miyuki Fujishiro
- Cosmos Technical Center Co., Ltd., 3-24-3 Hasune, Itabashi-ku, Tokyo, 174-0046, Japan
| | - Daiki Kyotani
- Cosmos Technical Center Co., Ltd., 3-24-3 Hasune, Itabashi-ku, Tokyo, 174-0046, Japan
| | - Yoshinao Kato
- Nippon Menard Cosmetic Co., Ltd., 2-7, Torimi-cho, Nishi-ku, Nagoya, 451-0071, Japan
| | - Toshihiko Kasahara
- Fujifilm Corporation, 210, Nakamura, Minamiashigara-shi, Kanagawa, 250-0193, Japan
| | - Masaharu Fujita
- Fujifilm Corporation, 210, Nakamura, Minamiashigara-shi, Kanagawa, 250-0193, Japan
| | - Akemi Toyoda
- Pola Chemical Industries, Inc., 560 Kashio-cho, Totsuka-ku, Yokohama, 244-0812, Japan
| | - Daisuke Sekiya
- Lion Corporation, 100, Tajima, Odawara, Kanagawa, 256-0811, Japan
| | | | - Hirokazu Seto
- P&G Japan K.K., 1-17, Koyo-cho Naka, Higashinada-ku, Kobe, 658-0032, Japan
| | - Osamu Takenouchi
- Kao Corporation, 2606, Akabane, Ichikai-Machi, Haga-Gun, Tochigi, 321-3497
| | - Takao Ashikaga
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa, 224-8558, Japan
| | - Masaaki Miyazawa
- Kao Corporation, 2606, Akabane, Ichikai-Machi, Haga-Gun, Tochigi, 321-3497
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Takenouchi O, Fukui S, Okamoto K, Kurotani S, Imai N, Fujishiro M, Kyotani D, Kato Y, Kasahara T, Fujita M, Toyoda A, Sekiya D, Watanabe S, Seto H, Hirota M, Ashikaga T, Miyazawa M. Test battery with the human cell line activation test, direct peptide reactivity assay and DEREK based on a 139 chemical data set for predicting skin sensitizing potential and potency of chemicals. J Appl Toxicol 2015; 35:1318-32. [DOI: 10.1002/jat.3127] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 01/04/2015] [Accepted: 01/04/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Osamu Takenouchi
- Kao Corporation; Ichikai-Machi Haga-Gun, Tochigi Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Shiho Fukui
- Kanebo Cosmetics Inc.; Odawara Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Kenji Okamoto
- Kanebo Cosmetics Inc.; Odawara Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Satoru Kurotani
- KOSE Corporation; Itabashi-ku Tokyo Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Noriyasu Imai
- KOSE Corporation; Itabashi-ku Tokyo Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Miyuki Fujishiro
- Cosmos Technical Center Co., Ltd.; Itabashi-ku Tokyo Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Daiki Kyotani
- Cosmos Technical Center Co., Ltd.; Itabashi-ku Tokyo Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Yoshinao Kato
- Nippon Menard Cosmetic Co., Ltd.; Nishi-ku Nagoya Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Toshihiko Kasahara
- Fujifilm Corporation; Minamiashigara-shi Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Masaharu Fujita
- Fujifilm Corporation; Minamiashigara-shi Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Akemi Toyoda
- Pola Chemical Industries, Inc.; Totsuka-ku Yokohama Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Daisuke Sekiya
- Lion Corporation; Odawara Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Shinichi Watanabe
- Lion Corporation; Odawara Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Hirokazu Seto
- P&G Japan K.K.; Higashinada-ku Kobe Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Morihiko Hirota
- Shiseido Research Center, Shiseido Co. Ltd.; Tsuzuki-ku Yokohama-shi, Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Takao Ashikaga
- Shiseido Research Center, Shiseido Co. Ltd.; Tsuzuki-ku Yokohama-shi, Kanagawa Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
| | - Masaaki Miyazawa
- Kao Corporation; Ichikai-Machi Haga-Gun, Tochigi Japan
- Working Group for In Vitro Skin Sensitization Evaluation in Japan Cosmetic Industry Association
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Ihara K, Hirota M, Akitsu T, Urakawa K, Abe T, Sumi M, Okawa T, Fujii T. Effects of emulsifying components in the continuous phase of cream on the stability of fat globules and the physical properties of whipped cream. J Dairy Sci 2015; 98:2875-83. [PMID: 25704969 DOI: 10.3168/jds.2014-8870] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 09/17/2014] [Accepted: 01/09/2015] [Indexed: 11/19/2022]
Abstract
The emulsifying components in cream are very important in controlling the physical characteristics of whipped cream. The effects of those components on the stability of fat globules and the physical characteristics of whipped cream were investigated. A low-molecular-weight emulsifier, and protein ingredients such as sodium caseinate and a casein partial hydrolysate (casein peptides), were used as emulsifying components in this investigation. The viscosity of deaerated whipped cream (called the serum viscosity) was measured to evaluate the degree of fat-globule aggregation. Furthermore, the shape-retention ability, which is the degree of reduction in the firmness of whipped cream between immediately after whipping and after 1d of refrigeration, was explored. The addition of the low-molecular-weight emulsifier in the continuous phase of dairy cream, which does not contain added low-molecular-weight emulsifiers, increased the stability of the fat globules and reduced the shape-retention ability of the whipped cream. The addition of protein ingredients (sodium caseinate and casein peptides) to the continuous phase of dairy cream had little effect. However, the addition of casein peptide in the continuous phase of dairy cream together with the low-molecular-weight emulsifier reduced the effect of the low-molecular-weight emulsifier on the stabilization of fat globules and the shape-retention ability of the whipped cream. The addition of casein peptide did not recover the serum viscosity; thus, other mechanisms might underlie this phenomenon.
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Affiliation(s)
- K Ihara
- Food Research and Development Institute, 1-83, 5-Chome Higashihara, zama, kanagawa 252-8583, Japan.
| | - M Hirota
- Food Research and Development Institute, 1-83, 5-Chome Higashihara, zama, kanagawa 252-8583, Japan
| | - T Akitsu
- Product Evaluation Center, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome Higashihara, Zama, Kanagawa 252-8583, Japan
| | - K Urakawa
- Food Research and Development Institute, 1-83, 5-Chome Higashihara, zama, kanagawa 252-8583, Japan
| | - T Abe
- Food Research and Development Institute, 1-83, 5-Chome Higashihara, zama, kanagawa 252-8583, Japan
| | - M Sumi
- Product Evaluation Center, Morinaga Milk Industry Co., Ltd., 1-83, 5-Chome Higashihara, Zama, Kanagawa 252-8583, Japan
| | - T Okawa
- Food Research and Development Institute, 1-83, 5-Chome Higashihara, zama, kanagawa 252-8583, Japan
| | - T Fujii
- Graduate School of Agricultural Science Faculty of Agriculture, Tohoku University, 1-1, Amamiya-machi, Tsutsumidori, Aoba-ku, Sendai, Miyagi 981-8555, Japan
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Tsujita-Inoue K, Atobe T, Hirota M, Ashikaga T, Kouzuki H. In silico risk assessment for skin sensitization using artificial neural network analysis. J Toxicol Sci 2015; 40:193-209. [DOI: 10.2131/jts.40.193] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Aiba née Kaneko M, Hirota M, Kouzuki H, Mori M. Prediction of genotoxic potential of cosmetic ingredients by an in silico battery system consisting of a combination of an expert rule-based system and a statistics-based system. J Toxicol Sci 2015; 40:77-98. [DOI: 10.2131/jts.40.77] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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35
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Hirota M, Morrison PJ, Hattori Y. Variational necessary and sufficient stability conditions for inviscid shear flow. Proc Math Phys Eng Sci 2014; 470:20140322. [PMID: 25484600 DOI: 10.1098/rspa.2014.0322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 09/04/2014] [Indexed: 11/12/2022] Open
Abstract
A necessary and sufficient condition for linear stability of inviscid parallel shear flow is formulated by developing a novel variational principle, where the velocity profile is assumed to be monotonic and analytic. It is shown that unstable eigenvalues of Rayleigh's equation (which is a non-self-adjoint eigenvalue problem) can be associated with positive eigenvalues of a certain self-adjoint operator. The stability is therefore determined by maximizing a quadratic form, which is theoretically and numerically more tractable than directly solving Rayleigh's equation. This variational stability criterion is based on the understanding of Kreĭn signature for continuous spectra and is applicable to other stability problems of infinite-dimensional Hamiltonian systems.
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Affiliation(s)
- M Hirota
- Institute of Fluid Science, Tohoku University , Sendai, Miyagi 980-8677, Japan
| | - P J Morrison
- Department of Physics , Institute for Fusion Studies, University of Texas at Austin , Austin, TX 78712, USA
| | - Y Hattori
- Institute of Fluid Science, Tohoku University , Sendai, Miyagi 980-8677, Japan
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Isomura T, Hirota M, Yoshida M, Hoshino J, Kondo T, Takahashi Y. 231 * PREOPERATIVE TRANSAORTIC FORWARD FLOW: A PREDICTOR OF SURGICAL OUTCOME FOR MITRAL SURGERY IN PATIENTS WITH DILATED CARDIOMYOPATHY AND MITRAL REGURGITATION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Isomura T, Hirota M, Hoshino J, Kondo T, Takahashi Y, Yoshida M. 230 * POSTERIOR RESTORATION PROCEDURES AND LONG-TERM RESULTS IN INDICATED PATIENTS WITH DILATED CARDIOMYOPATHY. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.230] [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: 11/14/2022] Open
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38
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Iida M, Mitsudo K, Ohara Y, Ohya T, Koizumi T, Nakashima H, Iwai T, Oguri S, Kioi M, Hirota M, Tohnai I. Clinical evaluation of thermochemoradiotherapy using retrograde superselective intra-arterial infusion for advanced oral cancer with cervical lymph node metastases. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.179] [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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39
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Ootake Y, Kogou T, Hirota M, Yamamoto M, Takaki T, Takano N, Shibahara T. A new sliding genioplasty “Stepped genioplasty” technique in order to avoid injuring mental nerve of Skeletal Class III. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.245] [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]
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40
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Kogou T, Hirota M, Yamamoto M, Narita M, Takaki T, Takano N, Shibahara T. Comparision between 3D and 2D cephalometric analysis of orthognathis surgery. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.230] [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]
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41
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Takaki T, Ootake Y, Kogou T, Hirota M, Yamamoto M, Takano N, Shibahara T. Use of ultrasonic new shape blade in orthognathic surgery: review of 138 patients. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Murakami A, Tanaka S, Ohigashi H, Hirota M, Irie R, Takeda N, Tatematsu A, Koshimizu K. Chalcone Tetramers, Lophirachalcone and Alatachalcone, fromLophira alataas Possible Anti-tumor Promoters. Biosci Biotechnol Biochem 2014; 56:769-72. [PMID: 1369383 DOI: 10.1271/bbb.56.769] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Two chalcone tetramers were isolated as inhibitors of Epstein-Barr virus (EBV)-activation induced by a tumor promoter, teleocidin B-4, from a medicinal plant in tropical west Africa, Lophira alata (Ochnaceae). One of them was identified as lophirachalcone. The other, named alatachalcone, was new, and the structure was determined by spectral properties. Both compounds also showed potent inhibitory activities against teleocidin B-4-induced inflammation on mouse ear. In an initiation-promotion experiment on mouse skin, alatachalcone (16 nmol) significantly inhibited tumor promotion caused by 12-O-tetradecanoylphorbol-13-acetate (TPA, 1.6 nmol).
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Affiliation(s)
- A Murakami
- Department of Food Science and Technology, Faculty of Agriculture, Kyoto University, Japan
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Mitsunaga S, Iwai T, Kitajima H, Yajima Y, Ohya T, Hirota M, Mitsudo K, Aoki N, Yamashita Y, Omura S, Tohnai I. Cervicofacial subcutaneous emphysema associated with dental laser treatment. Aust Dent J 2014; 58:424-7. [PMID: 24320897 DOI: 10.1111/adj.12119] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2013] [Indexed: 11/28/2022]
Abstract
Cervicofacial subcutaneous emphysema is a rare complication of dental procedures. Although most cases of emphysema occur incidentally with the use of a high-speed air turbine handpiece, there have been some reports over the past decade of cases caused by dental laser treatment. Emphysema as a complication caused by the air cooling spray of a dental laser is not well known, even though dental lasers utilize compressed air just as air turbines and syringes do. In this study, we comprehensively reviewed cases of emphysema attributed to dental laser treatment that appeared in the literature between January 2001 and September 2012, and we included three such cases referred to us. Among 13 cases identified in total, nine had cervicofacial subcutaneous and mediastinal emphysema. Compared with past reviews, the incidence of mediastinal emphysema caused by dental laser treatment was higher than emphysema caused by dental procedure without dental laser use. Eight patients underwent CO2 laser treatment and two underwent Er:YAG laser treatment. Nine patients had emphysema following laser irradiation for soft tissue incision. Dentists and oral surgeons should be cognizant of the potential risk for iatrogenic emphysema caused by the air cooling spray during dental laser treatment and ensure proper usage of lasers.
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Affiliation(s)
- S Mitsunaga
- Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine, Kanazawa-ku, Yokohama, Japan
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Tsujita-Inoue K, Hirota M, Ashikaga T, Atobe T, Kouzuki H, Aiba S. Skin sensitization risk assessment model using artificial neural network analysis of data from multiple in vitro assays. Toxicol In Vitro 2014; 28:626-39. [PMID: 24444449 DOI: 10.1016/j.tiv.2014.01.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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: 09/15/2013] [Revised: 12/21/2013] [Accepted: 01/08/2014] [Indexed: 12/25/2022]
Abstract
The sensitizing potential of chemicals is usually identified and characterized using in vivo methods such as the murine local lymph node assay (LLNA). Due to regulatory constraints and ethical concerns, alternatives to animal testing are needed to predict skin sensitization potential of chemicals. For this purpose, combined evaluation using multiple in vitro and in silico parameters that reflect different aspects of the sensitization process seems promising. We previously reported that LLNA thresholds could be well predicted by using an artificial neural network (ANN) model, designated iSENS ver.1 (integrating in vitro sensitization tests version 1), to analyze data obtained from two in vitro tests: the human Cell Line Activation Test (h-CLAT) and the SH test. Here, we present a more advanced ANN model, iSENS ver.2, which additionally utilizes the results of antioxidant response element (ARE) assay and the octanol-water partition coefficient (LogP, reflecting lipid solubility and skin absorption). We found a good correlation between predicted LLNA thresholds calculated by iSENS ver.2 and reported values. The predictive performance of iSENS ver.2 was superior to that of iSENS ver.1. We conclude that ANN analysis of data from multiple in vitro assays is a useful approach for risk assessment of chemicals for skin sensitization.
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Affiliation(s)
- Kyoko Tsujita-Inoue
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa 224-8558, Japan
| | - Morihiko Hirota
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa 224-8558, Japan.
| | - Takao Ashikaga
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa 224-8558, Japan
| | - Tomomi Atobe
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa 224-8558, Japan
| | - Hirokazu Kouzuki
- Shiseido Research Center, Shiseido Co. Ltd., 2-2-1 Hayabuchi, Tsuzuki-ku, Yokohama-shi, Kanagawa 224-8558, Japan
| | - Setsuya Aiba
- Department of Dermatology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
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Ishikawa S, Hayashi H, Kinoshita K, Abe M, Kuroki H, Tokunaga R, Tomiyasu S, Tanaka H, Sugita H, Arita T, Yagi Y, Watanabe M, Hirota M, Baba H. Statins inhibit tumor progression via an enhancer of zeste homolog 2-mediated epigenetic alteration in colorectal cancer. Int J Cancer 2014; 135:2528-36. [PMID: 24346863 PMCID: PMC4233976 DOI: 10.1002/ijc.28672] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [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: 07/25/2013] [Accepted: 12/05/2013] [Indexed: 11/07/2022]
Abstract
While statin intake has been proven to reduce the risk of colorectal cancer (CRC), the mechanism of antitumor effects and clinical significance in survival benefits remain unclear. Statin-induced antiproliferative effects and its underlying mechanism were examined using six CRC cell lines. Statins except pravastatin showed antiproliferative effects (simvastatin ≥ fluvastatin > atorvastatin) even though both of simvastatin and pravastatin could activate mevalonate pathways, suggesting the statin-mediated antiproliferative effects depended on non-mevalonate pathway. Indeed, statin induced p27(KIP1) expression by downregulation of histone methyltransferase enhancer of zeste homolog 2 (EZH2), which acts as an epigenetic gene silencer. Additionally, the use of simvastatin plus classII histone deacetylase (HDAC) inhibitor (MC1568) induced further overexpression of p27(KIP1) by inhibiting HDAC5 induction originated from downregulated EZH2 in CRC cells and synergistically led to considerable antiproliferative effects. In the clinical setting, Statin intake (except pravastatin) displayed the downregulated EZH2 expression and inversely upregulated p27(KIP1) expression in the resected CRC by immunohistochemical staining and resulted in the significantly better prognoses both in overall survival (p = 0.02) and disease free survival (p < 0.01) compared to patients without statin intake. Statins may inhibit tumor progression via an EZH2-mediated epigenetic alteration, which results in survival benefits after resected CRC. Furthermore, statin plus classII HDAC inhibitor could be a novel anticancer therapy by their synergistic effects in CRC.
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Affiliation(s)
- S Ishikawa
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - H Hayashi
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
| | - K Kinoshita
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
| | - M Abe
- Department of Surgery, Minamata City Hospital and Medical CenterMinamata city, Kumamoto, Japan
| | - H Kuroki
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
| | - R Tokunaga
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - S Tomiyasu
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - H Tanaka
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - H Sugita
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - T Arita
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - Y Yagi
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - M Watanabe
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
| | - M Hirota
- Department of Surgery, Kumamoto Regional Medical CenterKumamoto City, Japan
| | - H Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto UniversityKumamoto City, Japan
- Correspondence to: Hideo Baba, Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjyo Kumamoto City, Kumamoto 860-8556, Japan, Tel.: +81-96-373-5213, Fax: +81-96-371-4378, E-mail:
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46
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Onoue S, Suzuki G, Kato M, Hirota M, Nishida H, Kitagaki M, Kouzuki H, Yamada S. Non-animal photosafety assessment approaches for cosmetics based on the photochemical and photobiochemical properties. Toxicol In Vitro 2013; 27:2316-24. [DOI: 10.1016/j.tiv.2013.10.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 09/15/2013] [Accepted: 10/03/2013] [Indexed: 11/16/2022]
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47
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Hirota M, Sato I, Ozawa T, Iwai T, Kioi M, Mitsudo K, Tohnai I. Development of mandibular reconstruction device made of titanium fiber scaffold. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.047] [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: 10/26/2022]
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48
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Hashimoto D, Chikamoto A, Hirota M, Beppu T, Baba H. Education and Imaging. Hepatobiliary and pancreatic: huge bile duct stones after hepaticojejunostomy. J Gastroenterol Hepatol 2013; 28:764. [PMID: 23614344 DOI: 10.1111/jgh.12174] [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: 12/09/2022]
Affiliation(s)
- D Hashimoto
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
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Hirota M, Kouzuki H, Ashikaga T, Sono S, Tsujita K, Sasa H, Aiba S. Artificial neural network analysis of data from multiple in vitro assays for prediction of skin sensitization potency of chemicals. Toxicol In Vitro 2013; 27:1233-46. [PMID: 23458967 DOI: 10.1016/j.tiv.2013.02.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Revised: 02/18/2013] [Accepted: 02/19/2013] [Indexed: 11/16/2022]
Abstract
In order to develop in vitro risk assessment systems for skin sensitization, it is important to predict a threshold from the murine local lymph node assay (LLNA). We first confirmed that the combination of the human Cell Line Activation Test (h-CLAT) and the SH test improved the accuracy and sensitivity of prediction of LLNA data compared with each individual test. Next, we assessed the mutual correlations among maximum amount of change of cell-surface thiols (MAC value) in the SH test, CV75 value (concentration giving 75% cell viability) in a cytotoxicity assay, EC150 and EC200 values (thresholds concentrations of CD86 and CD54 expression, respectively) in h-CLAT and published LLNA thresholds of 64 chemicals. Based on the results, we selected MAC value and the minimum of CV75, EC150 (CD86) and EC200 (CD54) as descriptors for the input layer of an artificial neural network (ANN) system. The ANN-predicted values were well correlated with reported LLNA thresholds. We also found a correlation between the SH test and the peptide-binding assay used to evaluate hapten-protein complex formation. Thus, this model, which we designate as the "iSENS ver. 1", may be useful for risk assessment of skin sensitization potential of chemicals from in vitro test data.
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Affiliation(s)
- Morihiko Hirota
- Shiseido Research Center, Shiseido Co Ltd, 2-12-1 Fukuura, Kanazawa-ku, Yokohama-shi, Kanagawa 236-8643, Japan.
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50
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Hirota M, Hashimoto D, Ishiko T, Satoh N, Takamori H, Chikamoto A, Tanaka H, Sugita H, Sand J, Nordback I, Baba H. Distal pancreatectomy using a no-touch isolation technique. Scand J Surg 2013; 101:156-9. [PMID: 22968237 DOI: 10.1177/145749691210100303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AND AIMS Distal pancreatectomy is the only effective treatment for cancers of the pancreatic body and tail. The recurrence rate after DP has remained high. In an effort to over-come this problem, we developed a no-touch surgical technique for DP. This is a pilot study to see if distal pancreatectomy can be technically done using a no-touch surgical technique with-out deteriorating the post-operative prognosis. PATIENTS AND METHODS From November 2000 through May 2011, 16 pancreatic ductal adeno-carcinoma patients have been operated on using a no-touch technique by a single operator. We described the surgical technique, and we reported our preliminary experience. During the procedure, the pancreatic body and tail is neither grasped nor squeezed by the surgeon. And all drainage vessels from the pancreatic body and tail are ligated and divided during the early phase of the operation. Furthermore, for improved dissection of the retroperitoneal tissue (rightward and posterior margins), we use a hanging and clamping maneuver and dissection behind Gerota's fascia. RESULTS In the current series, the posterior and rightward resection margins were free in all patients, although seven were positive for anterior serosal invasion. The post-operative prognosis was not deteriorated with this technique. CONCLUSION No-touch distal pancreatectomy technique may have some theoretical advantages, which merit future investigation in randomized controlled trials.
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Affiliation(s)
- M Hirota
- Department of Surgery, Kumamoto Regional Medical Center, Kumamoto-city, Kumamoto, Japan.
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