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Bakri NN, Ferguson CA, Majeed S, Thomson WM, Oda K, Bartlett S, Broadbent JM, Smith MB. Workplace oral health promotion activities among community-aged care workers: A qualitative exploration. Community Dent Oral Epidemiol 2023. [PMID: 37950336 DOI: 10.1111/cdoe.12924] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 10/11/2023] [Accepted: 10/17/2023] [Indexed: 11/12/2023]
Abstract
BACKGROUND The workplace is an ideal-and priority-setting for health promotion activities. Developing and implementing workplace health promotion interventions, including oral health promotion activities, can help create health-supporting workplace environments. OBJECTIVE To pilot workplace oral health promotion activities among staff working in the aged care sector, report their impact and explore participants' views on the factors that contribute to participation and effectiveness. METHODS This study comprised three phases: (i) the development and face validation of the resources, (ii) a 3-h educational session and (iii) five interview sessions with participants 4-6 weeks following the education session. The recorded interviews were transcribed verbatim and analysed thematically. RESULTS Eleven community-aged care workforce were invited to five feedback sessions. Ten participants were female and ranged in age from 18 to 64. All participants gave favourable comments about the content and delivery of the training session and accompanying resources. The participants felt that the benefits of WOHP include improved staff knowledge, awareness and oral care routine, the ability to share (and put into practice) the gained knowledge and information with their dependants, a lower risk of having poor oral health that adversely affects their well-being and work tasks, and potentially beneficial impacts on the organization's staff roster. Their attendance in the WOHP was facilitated by being paid to attend and scheduling the sessions during work time. Future WOHP suggestions include the possibility of a one-stop dental check-up at the workplace or staff dental care discounts from local dental practitioners and combining oral health with other health promotion activities. CONCLUSIONS Planning and implementing WOHP was deemed acceptable and feasible in this study context and successfully achieved short-term impacts among community-aged care workers. Appropriate times and locations, organizational arrangements and a variety of delivery options contributed to successful programme planning and implementation.
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Affiliation(s)
- N N Bakri
- Centre of Population Oral Health and Clinical Prevention Studies, Faculty of Dentistry, Sungai Buloh Campus, Universiti Teknologi MARA, Selangor, Malaysia
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - C A Ferguson
- Department of Public Health, University of Otago, Wellington, New Zealand
| | - S Majeed
- Department of Public Health, University of Otago, Wellington, New Zealand
| | - W M Thomson
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - K Oda
- Department of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - S Bartlett
- Department of Public Health, University of Otago, Wellington, New Zealand
| | - J M Broadbent
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - M B Smith
- Department of Public Health, University of Otago, Wellington, New Zealand
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Minami T, Tokiyasu AO, Kohri H, Abe Y, Iwasaki K, Taguchi T, Oda K, Suzuki S, Asai T, Tanaka SJ, Isayama S, Kanasaki M, Kodaira S, Fukuda Y, Kuramitsu Y. Mass-resolved ion measurement by particle counting analysis for characterizing relativistic ion beams driven by lasers. Rev Sci Instrum 2022; 93:113530. [PMID: 36461420 DOI: 10.1063/5.0101872] [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] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 09/09/2022] [Indexed: 06/17/2023]
Abstract
Particle counting analysis is a possible way to characterize GeV-scale, multi-species ions produced in laser-driven experiments. We present a multi-layered scintillation detector to differentiate multi-species ions of different masses and energies. The proposed detector concept offers potential advantages over conventional diagnostics in terms of (1) high sensitivity to GeV ions, (2) realtime analysis, and (3) the ability to differentiate ions with the same charge-to-mass ratio. A novel choice of multiple scintillators with different ion stopping powers results in a significant difference in energy deposition between the scintillators, allowing accurate particle identification in the GeV range. Here, we report a successful demonstration of particle identification for heavy ions, performed at the Heavy Ion Medical Accelerator in Chiba. In the experiment, the proposed detector setup showed the ability to differentiate particles with similar atomic numbers, such as C6+ and O8+ ions, and provided an excellent energy resolution of 0.41%-1.2% (including relativistic effect, 0.51%--1.6%).
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Affiliation(s)
- T Minami
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - A O Tokiyasu
- Research Center for Electron Photon Science, Tohoku University, Miyagi 982-0826, Japan
| | - H Kohri
- Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan
| | - Y Abe
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - K Iwasaki
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - T Taguchi
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - K Oda
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - S Suzuki
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - T Asai
- Kansai Photon Science Institute (KPSI), National Institutes for Quantum Science and Technology (QST), Kyoto 619-0215, Japan
| | - S J Tanaka
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
| | - S Isayama
- Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan
| | - M Kanasaki
- Graduate School of Maritime Sciences, Kobe University, Hyogo 658-0022, Japan
| | - S Kodaira
- National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan
| | - Y Fukuda
- Kansai Photon Science Institute (KPSI), National Institutes for Quantum Science and Technology (QST), Kyoto 619-0215, Japan
| | - Y Kuramitsu
- Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan
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Funaki T, Kanazawa M, Takahashi S, Seki T, Iguchi A, Kagaya Y, Sato K, Saito H, Kondo M, Miura M, Kawatsu S, Endo H, Oda K, Nakamura A. The orthostatic hypotension in patients with Stanford type A aortic dissection after surgery. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.070] [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]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Orthostatic hypotension (OH) is sometimes observed during cardiac rehabilitation in patients with surgery for aortic dissection. However, little is known about the primary determinant of OH and influence of surgical range on incidence of OH.
Purpose
The aim of this study was to elucidate the incidence of OH in patients with surgery for aortic dissection, and compare it between the patients with ascending aortic replacement surgery (ascending group) and those with ascending aorta and hemiarch or total arch replacement surgery (arch group).
Methods
We analyzed 59 patients who underwent emergent surgery due to Stanford type A aortic dissection from January 2014 to March 2018, and compared the incidence of OH between ascending group (n = 28, age 69.8 ± 11.3 years) and arch group (n = 31, age 64.1 ± 13.0 years).
Results
The incidence of OH in total patients was 30.5%. There were no significant differences in patient characteristics including body tall, body weight, antihypertensive use and progress of rehabilitation between 2 groups. The arch group showed a significant higher incidence of OH as compared with ascending group (arch group: 46.4% vs. ascending group: 16.1%, p = 0.03). Moreover, the patients who occurred OH were significantly taller than those who did not occur OH.
Conclusions
OH was observed in about one third of patients with surgery for aortic dissection and it showed a close relationship with patient’s height and the range repaired by surgical operation. More careful cardiac rehabilitation is needed for tall patients with large area replacement of aorta.
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Affiliation(s)
- T Funaki
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - M Kanazawa
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - S Takahashi
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - T Seki
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - A Iguchi
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - Y Kagaya
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - K Sato
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - H Saito
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - M Kondo
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - M Miura
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - S Kawatsu
- Iwate Prefectural Central Hospital, Department of Cardiovascular surgery, Morioka, Japan
| | - H Endo
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - K Oda
- Iwate Prefectural Central Hospital, Department of Cardiovascular surgery, Morioka, Japan
| | - A Nakamura
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
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Kitamoto Y, Oda K, Ogino K, Hiyama K, Kita H, Hattori T, Oi S. Synthesis of an azadioxa-planar triphenylborane and investigation of its structural and photophysical properties. Chem Commun (Camb) 2021; 57:2297-2300. [PMID: 33533350 DOI: 10.1039/d0cc08331c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report here the first successful synthesis of planar triphenylborane 1 with the phenyl groups bridged by oxygen and nitrogen atoms via double nucleophilic aromatic substitution reaction. The hetero atom-bridged 1 has excellent planarity. Its structural and photophysical properties are tunable by altering the bridging atoms.
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Affiliation(s)
- Y Kitamoto
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
| | - K Oda
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - K Ogino
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - K Hiyama
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - H Kita
- Advanced Technology Center, Corporate R&D Headquarters, KONICA MINOLTA, INC., 2970 Ishikawa-Machi, Hachioji-shi, Tokyo 192-8505, Japan
| | - T Hattori
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
| | - S Oi
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, 6-6-11 Aramaki-Aoba, Aoba-ku, Sendai 980-8579, Japan.
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Kanazawa M, Toyoda M, Seki T, Iguchi A, Takahashi S, Kagaya Y, Sato K, Saito H, Ito K, Miura M, Kondo M, Kawatsu S, Endo H, Oda K, Nakamura A. Chronotropic incompetence and exercise capacity after mitral valve surgery: the importance of blood hemoglobin level. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3085] [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
Chronotropic incompetence (CI) is sometimes observed during exercise training of cardiac rehabilitation in patients with cardiac surgery, however, little is known concerning the differences between patients with mitral valve (MV) and aortic valve (AV) surgery.
Purpose
Because the possibility exists that cardiac sympathetic nerves might be impaired by left atrium incision, we hypothesized that the incidence of CI was higher in patients with MV surgery (Mitral Valve Replacement and Mitral Valvuloplasty) as compared with patients with AV surgery (Aortic Valve Replacement). And if so, which factor determines the exercise capacity of patients after MV surgery. We thus aimed this study to elucidate the hypothesis with cardiopulmonary exercise testing (CPX).
Methods
We performed CPX by ramp loading with ergometer exercise in total 61 patients who had undergone elective cardiac valve operation (25 patients with MV surgery, age 59.2±9.9 years; 36 patients with AV surgery, age 64.6±12.3 years). We analyzed chronotropic response index (CRI), peak oxygen uptake (peak VO2/W), anaerobic threshold (AT), and peak oxygen pulse (peak VO2/HR) with CPX, and blood hemoglobin concentration (Hb).
Results
The value of CRI was significantly decreased in the patients with MV surgery compared with those with AV surgery (MV; 0.19±0.10 vs. AV; 0.41±0.17, p<0.001). Peak VO2, peak VO2/HR and Hb were not significantly different between patients with MV and those with AV surgery. Patients with MV surgery showed correlations between peak VO2 and Hb (r=0.45, p<0.05), AT and Hb (r=0.52, p<0.01), and a strong correlation between peak VO2 and peak VO2/HR (r=0.63, p<0.001), but not in those with AV surgery.
Conclusions
The present study demonstrated that higher incidence of CI was shown in patients with MV surgery as compared with those with AV surgery. The exercise capacity of patients with MV surgery was determined by peak VO2/HR and Hb. These results suggest that 1) left atrium incision impairs cardiac sympathetic nerves and causes CI, 2) peak VO2/HR which is consisted of arterio-venous oxygen difference and Hb is critical indicator for exercise capacity in patients with MV surgery with CI.
Main results
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- M Kanazawa
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - M Toyoda
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - T Seki
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - A Iguchi
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - S Takahashi
- Iwate Prefectural Central Hospital, Department of Rehabilitation, Morioka, Japan
| | - Y Kagaya
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - K Sato
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - H Saito
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - K Ito
- Iwate Prefectural Central Hospital, Department of Cardiovascular Surgery, Morioka, Japan
| | - M Miura
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - M Kondo
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - S Kawatsu
- Iwate Prefectural Central Hospital, Department of Cardiovascular Surgery, Morioka, Japan
| | - H Endo
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
| | - K Oda
- Iwate Prefectural Central Hospital, Department of Cardiovascular Surgery, Morioka, Japan
| | - A Nakamura
- Iwate Prefectural Central Hospital, Department of Cardiology, Morioka, Japan
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Shibata M, Toyoshima J, Kaneko Y, Oda K, Kiyota T, Kambayashi A, Nishimura T. The Bioequivalence of Two Peficitinib Formulations, and the Effect of Food on the Pharmacokinetics of Peficitinib: Two-Way Crossover Studies of a Single Dose of 150 mg Peficitinib in Healthy Volunteers. Clin Pharmacol Drug Dev 2020; 10:283-290. [PMID: 32618438 PMCID: PMC7984322 DOI: 10.1002/cpdd.843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/01/2020] [Indexed: 12/30/2022]
Abstract
The marketed tablet formulation of peficitinib differs from the tablet used during the clinical trials. The bioequivalence of the marketed formulation and developmental tablet, and the food effect on the marketed formulation, were analyzed in 2 Japanese open‐label, randomized, 2‐way crossover studies in healthy male volunteers. Volunteers received a single oral dose of the marketed 150‐mg peficitinib tablet under fasted conditions (bioequivalence), and under fed or fasted conditions (food effect). Bioequivalence was compared with the developmental 150‐mg tablet. Samples for pharmacokinetic analysis were collected before dose and ≤72 hours after dose. Safety assessments included adverse events, vital signs, and laboratory variables. In total, 40 and 18 subjects were randomized to the bioequivalence and food effect studies, respectively. The 2 peficitinib formulations were bioequivalent (90% confidence intervals of the geometric mean ratios for Cmax and AUCt of peficitinib were within predefined limits of 0.8 to 1.25). The AUClast and the Cmax of the marketed tablet were 36.8% and 56.4% higher, respectively, under fed versus fasted conditions. Peficitinib was well tolerated. The marketed 150‐mg tablet formulation of peficitinib was bioequivalent to the developmental 150‐mg formulation, with no discernible safety differences. Bioavailability increased under fed conditions with the marketed tablet formulation.
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Affiliation(s)
| | | | | | - Kazuo Oda
- Astellas Research Institute of America LLC, Northbrook, Illinois, USA
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Noguchi I, Oda K. AB1122 BENEFIT OF JOINT ULTRASONOGRAPHY IN RHEUMATOID CARE PATIENT SATISFACTION SURVEY WITH NPS® USING POCUS (POINT OF CARE ULTRASOUND). Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3074] [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:The roles of rheumatologists include patient education and information provision, and there is a report that patient care led by nurses gives high satisfaction. In addition, it has been reported that rheumatologists will no longer provide sufficient care for rheumatism and nurses may make up for the shortage (1). In order for patients to deal with diseases for a long time, it is necessary to communicate with patients through team approach to healthcare including nurses specialized in rheumatology, and to make efforts to further improve patient satisfaction.Objectives:The satisfaction of patients who had undergone joint ultrasound (MSKUS) by rheumatologist nurses who had been registered as sonographers by the Japan College of Rheumatology was evaluated using a net promoter score (NPS®) to investigate whether medical intervention by nurses improved patient satisfaction.Methods:A questionnaire survey was performed in 103 RA patients who visited our department. The contents were 2 points, and (1) MSKUS’s level of patient satisfaction and (2) MSKUS’s level of recommendation to others were investigated. In (1), whether or not (1) the echo test was good, (2) whether the test was done with peace of mind, (3) whether the time of the test was appropriate, and (4) whether or not the disease status was better understood after the test, and (5) whether or not the patient wished to undergo the echo test periodically, were asked on a 5 point scale (high evaluation to low evaluation, 1 ~ 5). Regarding (2), the doctor said “Would you like to recommend the joint echo test to other patients? This question was evaluated using NPS®, which is said to have strong correlation with patient satisfaction, growth, and business performance in various industries.Measurement method of NPS®The customer with the 9 ~ 10 point score is classified as a “recommendation” the customer with the 7 ~ 8 point score is classified as a “neutral person” and the customer with the 0 ~ 6 point score is classified as a “critical person” The value of NPS® is the value that comes out after subtracting the percentage of a critical person (%) from the percentage of a recommended person (%).Results:Questionnaires were administered to 103 RA patients and responses were obtained from all.(1) For the 5 items of patient satisfaction, 85% or more of the patients had high scores (1 and 2) for all the questions.(2) NPS® score was high at 67. The NPS® score was even higher in the group of patients without progression of joint destruction (Stage 1 and 2) at 79.Conclusion:It was suggested that when the nurse who usually coaches explained the symptoms immediately using POCUS, the patient’s satisfaction would be improved, and a sense of security would be provided for the test. In addition, NPS® is a unified questioning method and said to be highly correlated with customer satisfaction, and it was considered that POCUS leads to benefits in medical management.References:[1]Fusama M et al. Mod Rheumatol. 2017 Sep;27(5):886-893.; Survey on attitudes regarding EULAR recommendations for the role of nurses involved in medical care of patients with chronic inflammatory arthritis in Japan.Disclosure of Interests:None declared
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Shibata M, Toyoshima J, Kaneko Y, Oda K, Nishimura T. A drug-drug interaction study to evaluate the impact of peficitinib on OCT1- and MATE1-mediated transport of metformin in healthy volunteers. Eur J Clin Pharmacol 2020; 76:1135-1141. [PMID: 32472157 PMCID: PMC7351850 DOI: 10.1007/s00228-020-02876-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/17/2020] [Indexed: 12/29/2022]
Abstract
Purpose Peficitinib is an oral pan-Janus kinase inhibitor for the treatment of rheumatoid arthritis. Co-administration of peficitinib with metformin, a type 2 diabetes therapy, can occur in clinical practice. Hepatic and renal uptake of metformin is mediated by organic cation transporter 1 (OCT1) and OCT2, respectively, and its renal excretion by multidrug and toxin extrusion 1 (MATE1) and MATE2-K. This study investigated the effect of peficitinib on metformin pharmacokinetics in vitro and in healthy volunteers. Methods Inhibitory effects of peficitinib and its metabolite H2 on metformin uptake into human OCT1/2- and MATE1/2-K-expressing cells were assessed in vitro. In an open-label, drug–drug interaction study, 24 healthy volunteers received a single dose of metformin 750 mg on Days 1 and 10, and a single dose of peficitinib 150 mg on Days 3 and 5–11. Blood and urine samples were collected pre-dose on Days 1 and 10, and at intervals ≤ 48 h post-dose. Metformin concentration was determined by liquid chromatography–tandem mass spectrometry and its pharmacokinetic parameters calculated. Results Peficitinib, but not H2, inhibited metformin uptake into OCT1- and MATE1/2-K-expressing cells. Repeated-dose administration of peficitinib reduced metformin area under the concentration–time curve from 0 h extrapolated to infinity (AUCinf) by 17.4%, maximum plasma concentration (Cmax) by 17.0%, and renal clearance (CLR) by 12.9%. Co-administration of peficitinib with metformin was generally well tolerated. Conclusion Slight changes in AUCinf, Cmax and CLR of metformin were observed when co-administered with peficitinib; however, these changes were considered not clinically relevant. Electronic supplementary material The online version of this article (10.1007/s00228-020-02876-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mai Shibata
- Astellas Pharma Inc., 2-5-1 Nihonbashi-Honcho, Chuo-Ku, Tokyo, 103-8411, Japan.
| | - Junko Toyoshima
- Astellas Pharma Inc., 2-5-1 Nihonbashi-Honcho, Chuo-Ku, Tokyo, 103-8411, Japan
| | - Yuichiro Kaneko
- Astellas Pharma Inc., 2-5-1 Nihonbashi-Honcho, Chuo-Ku, Tokyo, 103-8411, Japan
| | - Kazuo Oda
- Astellas Research Institute of America LLC, Northbrook, IL, USA
| | - Tetsuya Nishimura
- Astellas Pharma Inc., 2-5-1 Nihonbashi-Honcho, Chuo-Ku, Tokyo, 103-8411, Japan
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9
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Miyatake D, Shibata T, Toyoshima J, Kaneko Y, Oda K, Nishimura T, Katashima M, Sakaki M, Inoue K, Ito T, Uchida N, Furihata K, Urae A. Pharmacokinetics and Safety of a Single Oral Dose of Peficitinib (ASP015K) in Japanese Subjects With Normal and Impaired Hepatic Function. Clin Pharmacol Drug Dev 2019; 9:699-708. [PMID: 31833184 PMCID: PMC7496893 DOI: 10.1002/cpdd.751] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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: 08/20/2019] [Accepted: 10/14/2019] [Indexed: 01/06/2023]
Abstract
Peficitinib (ASP015K) is a novel Janus kinase inhibitor developed for the treatment of rheumatoid arthritis (RA). The impact of hepatic impairment on the peficitinib pharmacokinetic (PK) and safety profile was investigated in non‐RA subjects (n = 24) in an open‐label, parallel‐group, multicenter comparative study in Japan. Subjects received a single, clinically relevant, oral dose of a peficitinib 150 mg tablet under fasting conditions. Plasma PK parameters were measured for peficitinib and its metabolites H1 (sulfate and methylated metabolite), H2 (sulfate metabolite), and H4 (methylated metabolite) in subjects with normal hepatic function, mild hepatic impairment, or moderate hepatic impairment. The peficitinib area under the plasma‐concentration–time curve from time 0 to infinity (AUCinf) and maximum observed concentration (Cmax) were not markedly different in subjects with mild hepatic impairment versus normal hepatic function. In subjects with moderate hepatic impairment versus normal hepatic function, the geometric mean ratios for peficitinib AUCinf and Cmax, were 1.92 (90% CI: 1.39, 2.66) and 1.82 (90% CI: 1.24, 2.69), respectively. Five treatment‐emergent adverse events (TEAEs) were experienced by 3 subjects, 1 in each group. There were no deaths, no serious TEAEs, and no TEAEs leading to withdrawal. In summary, the PK profile was unaltered in subjects with mild hepatic impairment after a single clinically relevant dose of peficitinib, but exposure almost doubled in subjects with moderate hepatic impairment. Peficitinib dose reduction may be considered in RA patients with moderate hepatic impairment.
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Affiliation(s)
| | | | | | | | - Kazuo Oda
- Astellas Research Institute of America LLC, Northbrook, Illinois, USA
| | | | | | | | - Kazuaki Inoue
- Showa University Fujigaoka Hospital, Yokohama, Japan
| | | | - Naoki Uchida
- Clinical Research Institute of Clinical Pharmacology and Therapeutics, Showa University, Tokyo, Japan
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10
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Matsushima A, Oda K, Mori N, Murakami T. Modulated function of multidrug resistance-associated proteins in cisplatin-induced acute renal failure rats. Pharmazie 2018; 72:209-213. [PMID: 29441989 DOI: 10.1691/ph.2017.6200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The effect of cisplatin-induced acute renal failure (ARF) on the function and expression of multidrug resistanceassociated proteins (MRPs) was evaluated in rats. Rats received an intraperitoneal injection of cisplatin (9 mg/kg), and the induction of ARF state with high plasma concentrations of indoxyl sulfate and creatinine was observed 72 h after cisplatin treatment. The function of MRPs in the liver, kidney and brain was evaluated by measuring the tissue accumulation and biliary excretion of 2,4-dintrophenyl-S-glutathione (DNP-SG), a substrate for MRPs, after administration of 1-chloro-2,4-dintrobenzene (CDNB), a precursor of DNP-SG, in rats. The levels of MRP1-4 expression were evaluated by Western blot analysis. Effect of ARF plasma components on MRP function was also examined by using calcein acetoxymethyl ester (calcein-AM) in HepG2 cells. In ARF rats (72 h after cisplatin treatment), the accumulation of DNP-SG in the liver, kidney and brain was significantly higher than those in control and cisplatin-treated rats (1 h after treatment). In ARF rats, intrinsic biliary excretion clearance of DNP-SG, estimated by dividing the biliary excretion rate of DNP-SG with the liver concentration, was also significantly reduced, though the expression levels of MRP1-4 in the liver remained unchanged. ARF rat plasma (5%) significantly increased the accumulation of calcein, a MRP substrate, in HepG2 cells after application of calcein-AM. In conclusion, MRP function was found to be suppressed not only in the kidney but also in the liver and brain in cisplatin-induced ARF rats, possibly due to the accumulation of some MRP substrates/inhibitors in plasma.
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Yamada KT, Suzuki M, Pradipto AM, Koyama T, Kim S, Kim KJ, Ono S, Taniguchi T, Mizuno H, Ando F, Oda K, Kakizakai H, Moriyama T, Nakamura K, Chiba D, Ono T. Microscopic Investigation into the Electric Field Effect on Proximity-Induced Magnetism in Pt. Phys Rev Lett 2018; 120:157203. [PMID: 29756866 DOI: 10.1103/physrevlett.120.157203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 06/08/2023]
Abstract
Electric field effects on magnetism in metals have attracted widespread attention, but the microscopic mechanism is still controversial. We experimentally show the relevancy between the electric field effect on magnetism and on the electronic structure in Pt in a ferromagnetic state using element-specific measurements: x-ray magnetic circular dichroism (XMCD) and x-ray absorption spectroscopy (XAS). Electric fields are applied to the surface of ultrathin metallic Pt, in which a magnetic moment is induced by the ferromagnetic proximity effect resulting from a Co underlayer. XMCD and XAS measurements performed under the application of electric fields reveal that both the spin and orbital magnetic moments of Pt atoms are electrically modulated, which can be explained not only by the electric-field-induced shift of the Fermi level but also by the change in the orbital hybridizations.
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Affiliation(s)
- K T Yamada
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Suzuki
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - A-M Pradipto
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - T Koyama
- Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - S Kim
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K-J Kim
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ono
- Central Research Institute of Electric Power Industry, Yokosuka, Kanagawa 240-0196, Japan
| | - T Taniguchi
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Mizuno
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Ando
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Oda
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Kakizakai
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Moriyama
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nakamura
- Department of Physics Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - D Chiba
- Department of Applied Physics, The University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - T Ono
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
- Center for Spintronics Research Network (CSRN), Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Shodja M, Knutsen R, Cao J, Oda K, Beeson W, Knutsend S. Effects of Fasting Blood Sugar and Glycosylated Hemoglobin Levels on Neutrophilic Phagocytic Functions. Ann Epidemiol 2017. [DOI: 10.1016/j.annepidem.2017.07.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Hasegawa K, Matsushita H, Oda K, Yamamoto S, Nishijima A, Imai Y, Asada K, Ikeda Y, Fujiwara K, Aburatani H, Kakimi K. Immunoediting, neoantigen frequency, and clinical outcome in patients with ovarian clear cell carcinoma. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.03.039] [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: 10/19/2022]
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14
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Kikuchi Y, Koyama T, Ohshima N, Oda K. Red blood cell deformability and venous blood PO2 in diabetics. Clin Hemorheol Microcirc 2016. [DOI: 10.3233/ch-1988-8205] [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: 11/15/2022]
Affiliation(s)
- Y. Kikuchi
- Department of Biomedical Engineering, Institute of Basic Medical Sciences, University of Tsukuba, Ibaraki 305
| | - T. Koyama
- Department of Physiology, Research Institute of Applied Electricity, Hokkaido University, Sapporo 060
| | - N. Ohshima
- Department of Biomedical Engineering, Institute of Basic Medical Sciences, University of Tsukuba, Ibaraki 305
| | - K. Oda
- Department of Internal Medicine, Sapporo City Hospital, Sapporo 060, Japan
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15
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Oda K, Nakayama T, Umetani K, Kajihara M, Yamauchi T. GENERALISATION OF RADIATOR DESIGN TECHNIQUES FOR PERSONAL NEUTRON DOSEMETERS BY UNFOLDING METHOD. Radiat Prot Dosimetry 2016; 170:158-161. [PMID: 26378225 DOI: 10.1093/rpd/ncv410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel technique for designing a radiator suitable for personal neutron dosemeter based on plastic track detector was discussed. A multi-layer structure has been proposed in the previous report, where the thicknesses of plural polyethylene (PE) layers and insensitive ones were determined by iterative calculations of double integral. In order to arrange this procedure and make it more systematic, unfolding calculation has been employed to estimate an ideal radiator containing an arbitrary hydrogen concentration. In the second step, realistic materials replaced it with consideration of minimisation of the layer number and commercial availability. A radiator consisting of three layers of PE, Upilex and Kapton sheets was finally designed, for which a deviation in the energy dependence between 0.1 and 20 MeV could be controlled within 18 %. An applicability of fluorescent nuclear track detector element has also been discussed.
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Affiliation(s)
- K Oda
- Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan
| | - T Nakayama
- Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan
| | - K Umetani
- Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan
| | - M Kajihara
- Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan
| | - T Yamauchi
- Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminamimachi, Higashinada-ku, Kobe 658-0022, Japan
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Yoshida S, Hiraga K, Takehana T, Taniguchi I, Yamaji H, Maeda Y, Toyohara K, Miyamoto K, Kimura Y, Oda K. Response to Comment on "A bacterium that degrades and assimilates poly(ethylene terephthalate)". Science 2016; 353:759. [DOI: 10.1126/science.aaf8625] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 07/14/2016] [Indexed: 11/02/2022]
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17
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Sato I, Umemura M, Mitsudo K, Nakashima H, Kioi M, Eguchi H, Ohtake M, Oda K, Nakakaji R, Tohnai I, Ishikawa Y. 2811 Novel thermo-chemotherapy for oral cancer using a new magnetic anti-cancer drug. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31554-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Ohtake M, Umemura M, Sato I, Oda K, Nagasako A, Akimoto T, Eguchi H, Kawahara N, Ishikawa Y. 320 Simultaneous hyperthermic-chemotherapy using a single anti-cancer compound with magnetism in glioblastoma animal model. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30185-x] [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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19
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Kawasaki T, Okumura N, Mimura T, Oda K, Imai S, Matsusue Y. AB0509 Hip Joint Protection and Falling Numbers of Total Hip Arthroplasties in Cases of Rheumatoid Arthritis: Does Medication Work? Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3712] [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: 11/03/2022]
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20
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Okumura N, Kawasaki T, Imai S, Kumagai K, Oda K, Matsusue Y. FRI0179 Reducion in Complement C3 and C4 Levels Greater with Tocilizumab as Compared to Anti-TNF in Patients with Rheumatoid Arthritis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.2188] [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: 11/03/2022]
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21
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Oda K, Cao YJ, Sawamoto T, Nakada N, Fisniku O, Nagasaka Y, Sohda KY. Human mass balance, metabolite profile and identification of metabolic enzymes of [¹⁴C]ASP015K, a novel oral janus kinase inhibitor. Xenobiotica 2015; 45:887-902. [PMID: 25986538 DOI: 10.3109/00498254.2015.1026864] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
1. The human mass balance of (14)C-labelled ASP015K ([(14)C]ASP015K), an orally bioavailable Janus kinase (JAK) inhibitor, was characterized in six healthy male subjects after a single oral dose of [(14)C]ASP015K (100 mg, 3.7 MBq) in solution. [(14)C]ASP015K was rapidly absorbed with tmax of 1.6 and 1.8 h for ASP015K and total radioactivity in plasma, respectively. Mean recovery in urine and feces amounted to 36.8% and 56.6% of the administered dose, respectively. The main components of radioactivity in plasma and urine were ASP015K and M2 (5'-O-sulfo ASP015K). In feces, ASP015K and M4 (7-N-methyl ASP015K) were the main components. 2. In vitro study of ASP015K metabolism showed that the major isozyme contributing to the formation of M2 was human sulfotransferase (SULT) 2A1 and of M4 was nicotinamide N-methyltransferase (NNMT). 3. The in vitro intrinsic clearance (CLint_in vitro) of M4 formation from ASP015K in human liver cytosol (HLC) was 11-fold higher than that of M2. The competitive inhibitory effect of nicotinamide on M4 formation in the human liver was considered the reason for high CLint_in vitro of M4 formation, while each metabolic pathway made a near equal contribution to the in vivo elimination of ASP015K. ASP015K was cleared by multiple mechanisms.
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Affiliation(s)
- Kazuo Oda
- a Analysis & Pharmacokinetics Research Laboratories, Astellas Pharma Inc. , Osaka , Japan
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Kakuta S, Nakamura K, Shimomura M, Suzuki Y, Oda K, Hidaka S, Nagase M. Role of reactive oxygen species in the development of glomerular injury. Contrib Nephrol 2015; 101:255-62. [PMID: 8467683 DOI: 10.1159/000422140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- S Kakuta
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan
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Arimoto T, Kawana K, Adachi K, Ikeda Y, Nagasaka K, Tsuruga T, Yamashita A, Oda K, Ishikawa M, Kasamatsu T, Onda T, Konishi I, Yoshikawa H, Yaegashi N. Minimization of curative surgery for treatment of early cervical cancer: a review. Jpn J Clin Oncol 2015; 45:611-6. [DOI: 10.1093/jjco/hyv048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 03/10/2015] [Indexed: 11/14/2022] Open
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Nakada N, Oda K. Identification and characterization of metabolites of ASP015K, a novel oral Janus kinase inhibitor, in rats, chimeric mice with humanized liver, and humans. Xenobiotica 2015; 45:757-65. [DOI: 10.3109/00498254.2015.1019594] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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25
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Oda K, Yamano K, Otsuka Y. In vitro-in vivoextrapolations to evaluate the effect of concomitant drugs on tacrolimus (FK506) exposure. Biopharm Drug Dispos 2015; 36:265-74. [DOI: 10.1002/bdd.1938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 01/07/2015] [Accepted: 01/09/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Kazuo Oda
- Analysis and Pharmacokinetics Research Laboratories; Astellas Pharma Inc.; Yodogawa-ku Osaka 532-8514 Japan
| | - Katsuhiro Yamano
- Analysis and Pharmacokinetics Research Laboratories; Astellas Pharma Inc.; Yodogawa-ku Osaka 532-8514 Japan
| | - Yukio Otsuka
- Analysis and Pharmacokinetics Research Laboratories; Astellas Pharma Inc.; Yodogawa-ku Osaka 532-8514 Japan
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Oda K, Nakada N, Nagasaka Y. In vitro/in vivoinvestigations to examine the gender differences in the pharmacokinetics of novel oral Janus kinase (JAK) inhibitor ASP015K and sulfate metabolite M2 in rats. Xenobiotica 2014; 45:488-94. [DOI: 10.3109/00498254.2014.995747] [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: 11/13/2022]
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27
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Ichikawa M, Nagamatsu T, Fujii T, Hoya M, Kawai-Iwasawa Y, Oda K, Kawana K, Yamashita T, Osuga Y, Fujii T. Lysophosphatidic acid induces the expression of angiogenic factors in human trophoblast cells – a way of understanding the etiology of PIH. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.032] [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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Oda K, Mera K, Nagasaka Y, Tokoro K. Simultaneous determination of a novel oral Janus kinase inhibitor ASP015K and its sulfated metabolite in rat plasma using LC-MS/MS. Biomed Chromatogr 2014; 29:967-9. [PMID: 25380383 DOI: 10.1002/bmc.3380] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 09/21/2014] [Accepted: 10/06/2014] [Indexed: 11/10/2022]
Abstract
A sensitive and selective liquid chromatography with tandem mass spectrometry (LC-MS/MS) was developed for determining the concentrations of novel Janus kinase inhibitor ASP015K and its sulfated metabolite M2 in rat plasma. This method involves solid-phase extraction (SPE) from 25 μL of rat plasma. LC separation was performed on an Inertsil PH-3 column (100 mm L ×4.6 mm I.D., 5 µm) with a mobile phase consisting of 10 mM ammonium acetate and methanol under linear gradient conditions. Analytes were introduced to the LC-MS/MS through an electrospray ionization source and detected in positive-ion mode using selected reaction monitoring. Standard curves were linear from 0.25 to 500 ng/mL (r ≥0.9964). This assay enabled quantification of ASP015K and M2 at a concentration as low as 0.25 ng/mL in rat plasma. Validation data demonstrated that the method is selective, sensitive and accurate. Further, we also successfully applied this method to a preclinical pharmacokinetic study in rats.
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Affiliation(s)
- Kazuo Oda
- Analysis and Pharmacokinetics Research Laboratories, Astellas Pharma Inc., 1-6 Kashima, 2-chome, Yodogawa-ku, Osaka, 532-8514, Japan
| | - Katsumi Mera
- Analysis and Pharmacokinetics Research Laboratories, Astellas Pharma Inc., 1-6 Kashima, 2-chome, Yodogawa-ku, Osaka, 532-8514, Japan
| | - Yasuhisa Nagasaka
- Analysis and Pharmacokinetics Research Laboratories, Astellas Pharma Inc., 1-6 Kashima, 2-chome, Yodogawa-ku, Osaka, 532-8514, Japan
| | - Kazumi Tokoro
- Safety Research Laboratories, Astellas Pharma Inc., 1-6 Kashima, 2-chome, Yodogawa-ku, Osaka, 532-8514, Japan
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Oda K, Yamano K. Effect of telaprevir on the metabolism and hepatic uptake of tacrolimus (FK506). Biopharm Drug Dispos 2014; 35:501-12. [DOI: 10.1002/bdd.1913] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 06/25/2014] [Accepted: 07/15/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Kazuo Oda
- Analysis and Pharmacokinetics Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima 2-chome, Yodogawa-ku Osaka 532-8514 Japan
| | - Katsuhiro Yamano
- Analysis and Pharmacokinetics Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima 2-chome, Yodogawa-ku Osaka 532-8514 Japan
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Sakurai R, Fujiwara Y, Yasunaga M, Takeuchi R, Murayama Y, Ohba H, Sakuma N, Suzuki H, Oda K, Sakata M, Toyohara J, Ishiwata K, Shinkai S, Ishii K. Regional Cerebral Glucose Metabolism and Gait Speed in Healthy Community-Dwelling Older Women. J Gerontol A Biol Sci Med Sci 2014; 69:1519-27. [DOI: 10.1093/gerona/glu093] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [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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31
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Hirokawa M, Oda K, Yamamoto A, Sasaguri S. A soft dual-port trocar for endoscopic subcutaneous surgery. Surg Endosc 2014; 15:520-3. [PMID: 11353979 DOI: 10.1007/s004640080117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2000] [Accepted: 10/16/2000] [Indexed: 11/27/2022]
Abstract
BACKGROUND We developed a new trocar for endoscopic subcutaneous surgery and tested it in subfascial endoscopic perforator surgery (SEPS) for varicose veins of the lower leg. METHODS The soft trocar is a y-shaped polyvinyl chloride bag equipped with two ports at one end and a flexible ring at the other end. We performed SEPS on 12 patients through a 2-cm incision below the knee. After dissection of the subfascial plane, the ring of the trocar was inserted beneath the fascia, and the subfascial cavity was inflated with CO2 gas. The perforating veins were divided with UltraShears (Autosuture, USSC, Norwalk, CT, USA) inserted through the second port of the trocar with an endoscope. RESULTS There were no major device-related difficulties or wound complications. CONCLUSION The soft trocar allowed both an endoscope and a surgical instrument to be inserted simultaneously in the tissue space through a single incision. This useful instrument may have applications in other endoscopic surgical procedures.
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Affiliation(s)
- M Hirokawa
- Department of Surgery II, Kochi Medical School, Kohasu, Oko-cho, Nankoku, Kochi 783-8505, Japan.
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32
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Nagasaka Y, Sano T, Oda K, Kawamura A, Usui T. Impact of genetic deficiencies of P-glycoprotein and breast cancer resistance protein on pharmacokinetics of aripiprazole and dehydroaripiprazole. Xenobiotica 2014; 44:926-32. [PMID: 24666334 DOI: 10.3109/00498254.2014.901585] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [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: 01/16/2023]
Abstract
1. We investigated how deficiencies in P-glycoprotein (P-gp) and breast cancer resistance protein (BCRP) affect the pharmacokinetics of atypical antipsychotics aripiprazole and its active metabolite (dehydroaripiprazole) using normal Friend leukemia virus strain B (FVB) mice, BCRP knockout (Bcrp[-/-]) mice, and P-gp and BCRP triple knockout (Mdr1a/1b[-/-]Bcrp[-/-]) mice. 2. While plasma concentrations of aripiprazole and dehydroaripiprazole after oral administration were slightly higher in both Bcrp(-/-) and Mdr1a/1b(-/-)/Bcrp(-/-) mice than in normal FVB mice, the difference was not marked. The increase in absolute bioavailability (F) compared with normal mice (approximately 1.3-fold increase) was comparable between Bcrp(-/-) and Mdr1a/1b(-/-)/Bcrp(-/-) mice. This finding suggests that BCRP may be involved in the intestinal absorption of aripiprazole in mice, albeit with minimal contribution to absorption at best. 3. In contrast, the brain-to-plasma concentration ratio (Kp,brain) for aripiprazole and dehydroaripiprazole after oral administration was significantly higher in Mdr1a/1b(-/-)/Bcrp(-/-) mice than in normal mice, whereas Bcrp(-/-) mice exhibited Kp,brain values similar to those in normal mice. In addition, the Kp,brain values in Mdr1a/1b(-/-)/Bcrp(-/-) mice were not drastically different from those previously reported in Mdr1a/1b(-/-) mice, suggesting that brain penetration of aripiprazole and dehydroaripiprazole can be affected by P-gp, but with little synergistic effect of BCRP.
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Affiliation(s)
- Yasuhisa Nagasaka
- Analysis and Pharmacokinetics Research Labs, Astellas Pharma Inc. , Ibaraki , Japan
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Zhu T, Oda K, Valluri U, Moore B, Cao Y, Chindalore V, Akinlade B. AB0363 Coadministration of asp015k, a novel janus kinase inhibitor, with methotrexate demonstrates tolerability and lack of pharmacokinetic interactions in patients with rheumatoid arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.2685] [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: 11/04/2022]
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Suzuki Y, Kiyosawa M, Wakakura M, Mochizuki M, Ishiwata K, Oda K, Ishii K. Glucose hypermetabolism in the thalamus of patients with drug-induced blepharospasm. Neuroscience 2014; 263:240-9. [PMID: 24462606 DOI: 10.1016/j.neuroscience.2014.01.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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: 08/10/2013] [Revised: 01/13/2014] [Accepted: 01/14/2014] [Indexed: 12/26/2022]
Abstract
We examined the difference in cerebral function alterations between drug-induced blepharospasm patients and essential blepharospasm (EB) patients by using positron emission tomography with (18)F-fluorodeoxyglucose. Cerebral glucose metabolism was examined in 21 patients with drug-induced blepharospasm (5 men and 16 women; mean age, 53.1 [range, 29-78] years), 21 essential EB patients (5 men and 16 women; mean age, 53.0 [range, 33-72] years) and 24 healthy subjects (6 men and 18 women; mean age, 57.9 [range, 22-78] years) with long-term history of benzodiazepines use (drug healthy subjects). Drug-induced blepharospasm patients developed symptoms while taking benzodiazepines or thienodiazepines. Sixty-three normal volunteers (15 men and 48 women; mean age, 53.6 [range, 20-70] years) were examined as controls. Differences between the patient groups and control group were examined by statistical parametric mapping. Additionally, we defined regions of interests on both sides of the thalamus, caudate nucleus, anterior putamen, posterior putamen and primary somatosensory area. The differences between groups were tested using two-sample t-tests with Bonferroni correction for multiple comparisons. Cerebral glucose hypermetabolism on both side of the thalamus was detected in drug-induced blepharospasm, EB patients and drug healthy subjects by statistical parametric mapping. In the analysis of regions of interest, glucose metabolism in both sides of the thalamus in the drug-induced blepharospasm group was significantly lower than that in the EB group. Moreover, we observed glucose hypermetabolism in the anterior and posterior putamen bilaterally in EB group but not in drug-induced blepharospasm group and drug healthy subjects. Long-term regimens of benzodiazepines or thienodiazepines may cause down-regulation of benzodiazepine receptors in the brain. We suggest that the functional brain alteration in drug-induced blepharospasm patients is similar to that in EB patients, and that alteration of the GABAergic system might be related to the pathology of both blepharospasm types.
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Affiliation(s)
- Y Suzuki
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Graduate School, Tokyo, Japan; Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan; All Japan Federation of Social Insurance Associations Mishima Hospital, Mishima, Japan.
| | - M Kiyosawa
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Graduate School, Tokyo, Japan; Kiyosawa Eye Clinic, Tokyo, Japan
| | | | - M Mochizuki
- Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Graduate School, Tokyo, Japan
| | - K Ishiwata
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - K Oda
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - K Ishii
- Research Team for Neuroimaging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
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Hoshino M, Haraguchi Y, Oda K, Kajiwara S. Blood glucose target in acute phase suggested by the analysis of the relationship between blood glucose profile and the severity of the diseases. Crit Care 2014. [PMCID: PMC4069568 DOI: 10.1186/cc13636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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36
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Oda K, Nemoto H, Nagasaka Y, Kawamura A, Usui T. In vitroexperimental system for evaluating inhibitory effect of investigational drugs on P-glycoprotein-mediated transcellular transport of tacrolimus (FK506). Biopharm Drug Dispos 2013; 35:135-44. [DOI: 10.1002/bdd.1876] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kazuo Oda
- Drug Metabolism Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima, 2-chome, Yodogawa-ku Osaka 532-8514 Japan
| | - Hiroyuki Nemoto
- ADME & Tox. Research Institute; Sekisui Medical Co., Ltd; 2117 Muramatsu, Tokai-mura, Naka-gun Ibaraki 319-1182 Japan
| | - Yasuhisa Nagasaka
- Drug Metabolism Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima, 2-chome, Yodogawa-ku Osaka 532-8514 Japan
| | - Akio Kawamura
- Drug Metabolism Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima, 2-chome, Yodogawa-ku Osaka 532-8514 Japan
| | - Takashi Usui
- Drug Metabolism Research Laboratories; Astellas Pharma Inc.; 1-6 Kashima, 2-chome, Yodogawa-ku Osaka 532-8514 Japan
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Sakamoto R, Jaceldo-Siegl K, Haddad E, Oda K, Fraser G, Tonstad S. Relationship of vitamin D levels to blood pressure in a biethnic population. Nutr Metab Cardiovasc Dis 2013; 23:776-784. [PMID: 22770642 PMCID: PMC3522760 DOI: 10.1016/j.numecd.2012.04.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Revised: 04/07/2012] [Accepted: 04/25/2012] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS Accumulating epidemiological and clinical studies have suggested that vitamin D insufficiency may be associated with hypertension. Blacks tend to have lower vitamin D levels than Whites, but it is unclear whether this difference explains the higher blood pressure (BP) observed in Blacks in a population with healthy lifestyle practices. METHODS AND RESULTS We examined cross-sectional data in the Adventist Health Study-2 (AHS-2), a cohort of non-smoking, mostly non-drinking men and women following a range of diets from vegan to non-vegetarian. Each participant provided dietary, demographic, lifestyle and medical history data. Measurements of weight, height, waist circumference, percent body fat and blood pressure and fasting blood samples were obtained from a randomly selected non-diabetic sample of 284 Blacks and 284 Whites aged 30-95 years. Multiple regression analyses were used to assess independent relationships between blood pressure and 25(OH)D levels. Levels of 25(OH)D were inversely associated with systolic BP in Whites after control for age, gender, BMI, and use of BP-lowering medications (β-coefficient -0.23 [95% CI, -0.43, -0.03; p = 0.02]). This relationship was not seen in Blacks (β-coefficient 0.08 [95% CI, -0.14, 0.30; p = 0.4]). Results were similar when controlling for waist circumference or percentage body fat instead of BMI. No relationship between serum 25(OH)D and diastolic BP was seen. CONCLUSION Systolic BP is inversely associated with 25(OH)D levels in Whites but not in Blacks. Vitamin D may not be a major contributor to the White-Black differential in BP.
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Affiliation(s)
- R. Sakamoto
- Department of Health Promotion and Education, School of Public Health, Loma Linda University, 24951 North Circle Drive, Loma Linda, CA 92350, USA
| | - K. Jaceldo-Siegl
- Department of Nutrition, School of Public Health, Loma Linda University, USA
| | - E. Haddad
- Department of Nutrition, School of Public Health, Loma Linda University, USA
| | - K. Oda
- Department of Epidemiology and Biostatistics, School of Public Health, Loma Linda University, USA
| | - G.E. Fraser
- Department of Epidemiology and Biostatistics, School of Public Health, Loma Linda University, USA
| | - S. Tonstad
- Department of Health Promotion and Education, School of Public Health, Loma Linda University, 24951 North Circle Drive, Loma Linda, CA 92350, USA
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Noguchi S, Yatera K, Kawanami T, Yamasaki K, Akata K, Oda K, Nishida C, Kawanami Y, Ishimoto H, Fukuda K, Taniguchi H, Mukae H. P323 The significant role of oral bacteria in CAP and HCAP patients with aspiration pneumonia. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70564-8] [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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Tonstad S, Stewart K, Oda K, Batech M, Herring RP, Fraser GE. Vegetarian diets and incidence of diabetes in the Adventist Health Study-2. Nutr Metab Cardiovasc Dis 2013; 23:292-299. [PMID: 21983060 PMCID: PMC3638849 DOI: 10.1016/j.numecd.2011.07.004] [Citation(s) in RCA: 226] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 07/13/2011] [Accepted: 07/15/2011] [Indexed: 12/24/2022]
Abstract
AIM To evaluate the relationship of diet to incident diabetes among non-Black and Black participants in the Adventist Health Study-2. METHODS AND RESULTS Participants were 15,200 men and 26,187 women (17.3% Blacks) across the U.S. and Canada who were free of diabetes and who provided demographic, anthropometric, lifestyle and dietary data. Participants were grouped as vegan, lacto ovo vegetarian, pesco vegetarian, semi-vegetarian or non-vegetarian (reference group). A follow-up questionnaire after two years elicited information on the development of diabetes. Cases of diabetes developed in 0.54% of vegans, 1.08% of lacto ovo vegetarians, 1.29% of pesco vegetarians, 0.92% of semi-vegetarians and 2.12% of non-vegetarians. Blacks had an increased risk compared to non-Blacks (odds ratio [OR] 1.364; 95% confidence interval [CI], 1.093-1.702). In multiple logistic regression analysis controlling for age, gender, education, income, television watching, physical activity, sleep, alcohol use, smoking and BMI, vegans (OR 0.381; 95% CI 0.236-0.617), lacto ovo vegetarians (OR 0.618; 95% CI 0.503-0.760) and semi-vegetarians (OR 0.486, 95% CI 0.312-0.755) had a lower risk of diabetes than non-vegetarians. In non-Blacks vegan, lacto ovo and semi-vegetarian diets were protective against diabetes (OR 0.429, 95% CI 0.249-0.740; OR 0.684, 95% CI 0.542-0.862; OR 0.501, 95% CI 0.303-0.827); among Blacks vegan and lacto ovo vegetarian diets were protective (OR 0.304, 95% CI 0.110-0.842; OR 0.472, 95% CI 0.270-0.825). These associations were strengthened when BMI was removed from the analyses. CONCLUSION Vegetarian diets (vegan, lacto ovo, semi-) were associated with a substantial and independent reduction in diabetes incidence. In Blacks the dimension of the protection associated with vegetarian diets was as great as the excess risk associated with Black ethnicity.
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Affiliation(s)
- S Tonstad
- Loma Linda University School of Public Health, Department of Health Promotion and Education, Loma Linda, CA 92354, USA.
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Fukuda Y, Sakaki H, Kanasaki M, Yogo A, Jinno S, Tampo M, Faenov A, Pikuz T, Hayashi Y, Kando M, Pirozhkov A, Shimomura T, Kiriyama H, Kurashima S, Kamiya T, Oda K, Yamauchi T, Kondo K, Bulanov S. Identification of high energy ions using backscattered particles in laser-driven ion acceleration with cluster-gas targets. RADIAT MEAS 2013. [DOI: 10.1016/j.radmeas.2012.10.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Imamura H, Nagata A, Oshikata R, Yoshimura Y, Miyamoto N, Miyahara K, Oda K, Iide K. High-density lipoprotein cholesterol subfractions and lecithin: cholesterol acyltransferase activity in collegiate soccer players. Int J Sports Med 2012; 34:398-401. [PMID: 23152129 DOI: 10.1055/s-0032-1327651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Many of the published data on the lipid profile of athletes is based on studies of endurance athletes. The data on soccer players are rare. The purpose of this study was to examine serum high-density lipoprotein cholesterol subfractions and lecithin:cholesterol acyltransferase activity in collegiate soccer players. 31 well-trained male collegiate soccer players were divided into 2 groups: 16 defenders and 15 offenders. They were compared with 16 sedentary controls. Dietary information was obtained with a food frequency questionnaire. The subjects were all non-smokers and were not taking any drug known to affect the lipid and lipoprotein metabolism. The offenders had significantly higher high-density lipoprotein cholesterol, high-density lipoprotein2 cholesterol, and apolipoprotein A-I than the defenders and controls, whereas the defenders had the significantly higher high-density lipoprotein2 cholesterol than the controls. Both groups of athletes had significantly higher lecithin:cholesterol acyltransferase activity than the controls. The results indicate that favorable lipid and lipoprotein profile could be obtained by vigorous soccer training.
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Affiliation(s)
- H Imamura
- Department of Health and Nutrition, Nagasaki International University, Sasebo-shi, Japan.
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Kashiyama T, Oda K, Ikeda Y, Shiose Y, Hirota Y, Miyasaka A, Wada-Hiraike O, Kawana K, Yano T, Kozuma S. 362 Anti-tumor Efficacy of DS-7423, a Novel PI3K/mTOR Dual Inhibitor, in Ovarian Clear Cell Adenocarcinoma. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)72160-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Nishida Y, Nakamura M, Oda K, Tauchi K. Definitive Chemoradiotherapy using Intensity Modulated Radiotherapy (IMRT) for Unresectable Advanced Esophageal Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32224-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Ikeda Y, Oda K, Nakagawa S, Hiraike O, Kawana K, Aburatani H, Nagasaka T, Yano T, Kozuma S, Taketani Y. M313 A DIAGNOSTIC UTILITY OF SINGLE NUCLEOTIDE POLYMORPHISM ARRAYS IN SYNCHRONOUS CARCINOMAS. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61504-5] [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: 11/30/2022]
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Nagasaka Y, Oda K, Iwatsubo T, Kawamura A, Usui T. Effects of aripiprazole and its active metabolite dehydroaripiprazole on the activities of drug efflux transporters expressed both in the intestine and at the blood-brain barrier. Biopharm Drug Dispos 2012; 33:304-15. [PMID: 22847220 DOI: 10.1002/bdd.1801] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 06/20/2012] [Accepted: 07/16/2012] [Indexed: 12/26/2022]
Abstract
The inhibition potencies of aripiprazole and its active metabolite, dehydroaripiprazole, on the activities of human multidrug resistance protein 1 (MDR1/ABCB1; P-glycoprotein), breast cancer resistance protein (BCRP/ABCG2) and multidrug resistance-associated protein 4 (MRP4/ABCC4), that are drug efflux transporters expressed both in the intestine and at the blood-brain barrier (BBB), were investigated. Aripiprazole and dehydroapripiprazole showed relatively strong inhibitory effects on human MDR1 with IC(50) values of 1.2 and 1.3 µm in human MDR1-transfected Mardin-Darby canine kidney (MDCKII-MDR1) cells, respectively. The inhibition potencies of other atypical antipsychotics (risperidone, paliperidone, olanzapine and ziprasidone) for human MDR1 were also evaluated using the same in vitro experimental system and IC(50) values were more than 10-fold higher than those of the two compounds. Aripiprazole and dehydroaripiprazole also had inhibition potencies against human BCRP with IC(50) values of 3.5 and 0.52 µm, respectively. The ratios of steady-state unbound concentrations of aripiprazole and dehydroaripiprazole to their IC(50) values against human MDR1 and BCRP activities were less than 0.1, whereas the theoretically maximum gastrointestinal concentration of aripiprazole ([I](2) ) to its IC(50) values was much higher than the cut-off value of 10, proposed by the International Transporter Consortium (ITC) and the Food and Drug Administration (FDA). In contrast, aripiprazole and dehydroaripiprazole showed almost no inhibitory effect against the activity of human MRP4. These findings indicate that aripiprazole is unlikely to cause drug-drug interactions (DDIs) at the BBB when co-administered with substrate drugs of these drug transporters investigated. However, interactions at the intestinal absorption process may be of concern.
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Affiliation(s)
- Yasuhisa Nagasaka
- Drug Metabolism Research Laboratories, Astellas Pharma Inc., Kashima, Osaka, Japan.
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Hasegawa T, Oda K, Sato Y, Ito H, Masuda S, Yamada T, Matsumoto M, Murayama H, Takei H. Microfocus x-ray imaging of traceable pointlike (22)Na sources for quality control. Med Phys 2012; 39:4414-22. [PMID: 22830774 DOI: 10.1118/1.4730293] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE The purpose of this study is to propose a microfocus x-ray imaging technique for observing the internal structure of small radioactive sources and evaluating geometrical errors quantitatively, and to apply this technique to traceable pointlike (22)Na sources, which were designed for positron emission tomography calibration, for the purpose of quality control of the pointlike sources. METHODS A microfocus x-ray imaging system with a focus size of 0.001 mm was used to obtain projection x-ray images and x-ray CT images of five pointlike source samples, which were manufactured during 2009-2012. The obtained projection and tomographic images were used to observe the internal structure and evaluate geometrical errors quantitatively. Monte Carlo simulation was used to evaluate the effect of possible geometrical errors on the intensity and uniformity of 0.511 MeV annihilation photon pairs emitted from the sources. RESULTS Geometrical errors were evaluated with sufficient precision using projection x-ray images. CT images were used for observing the internal structure intuitively. As a result, four of the five examined samples were within the tolerance to maintain the total uncertainty below ±0.5%, given the source radioactivity; however, one sample was found to be defective. CONCLUSIONS This quality control procedure is crucial and offers an important basis for using the pointlike (22)Na source as a basic calibration tool. The microfocus x-ray imaging approach is a promising technique for visual and quantitative evaluation of the internal geometry of small radioactive sources.
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Affiliation(s)
- T Hasegawa
- Allied Health Sciences, Kitasato University, Kanagawa, Japan.
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Tamura T, Ito E, Watanabe T, Matsumoto Y, Ando H, Oda K, Kishida Y, Ichikawa M, Sato T, Sakuma J, Saito K. Skull Base Reconstruction Using Various Types of Galeal Flaps. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314019] [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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Sato T, Watanabe T, Kishida Y, Tamura T, Ito E, Ichikawa M, Oda K, Matsumoto Y, Ando H, Sakuma J, Saito K. Four Types Endoscopic Procedures in Skull Base Surgeries. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1313969] [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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49
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Ito E, Ichikawa M, Itakura T, Ando H, Matsumoto Y, Oda K, Kishida Y, Tamura T, Sato T, Watanabe T, Sakuma J, Saito K. Continuous Monitoring of Corticobulbar Motor-Evoked Potentials of Vagus Nerve during Brainstem or Skull Base Surgery. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314309] [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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Saito K, Sato T, Tamura T, Ito E, Watanabe T, Ichikawa M, Kishida Y, Oda K, Matsumoto Y, Ando H, Sakuma J. Challenging Skull Base Meningiomas: Present Outcome and Future Strategies. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314218] [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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