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Maezawa M, Inoue M, Satake R, Wakabayashi W, Oura K, Goto F, Miyasaka K, Hirofuji S, Iwata M, Suzuki T, Tanaka H, Nishida S, Shimizu S, Suzuki A, Iguchi K, Nakamura M. Effect of acid suppressant medications on the laxative action of magnesium preparations in patients with opioid-induced constipation: A pharmacovigilance analysis of the FDA Adverse Event Reporting System. Pharmazie 2023; 78:245-250. [PMID: 38178284 DOI: 10.1691/ph.2023.3624] [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] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Objective: Magnesium oxide is widely used for treating opioid-induced constipation, a serious analgesic-associated problem. Opioid analgesic users are often prescribed non-steroidal anti-inflammatory drugs, which are sometimes combined with acid suppressants to prevent gastrointestinal adverse events. Magnesium preparations combined with acid suppressants may diminish magnesium preparations' laxative effect. This study was aimed at evaluating the effect of magnesium preparations combined with acid suppressants on the incidence of opioid-induced constipation by using the Food and Drug Administration Adverse Event Reporting System. Methods: Adverse events were defined per the Medical Dictionary for Regulatory Activities; the term 'constipation (preferred term code: 10010774)' was used for analysis. After adjusting for patient background factors using propensity score matching, acid suppressants' effect on constipation incidence was evaluated in opioid users prescribed magnesium preparations alone as laxatives by using a test for independence. Key Findings: The Food and Drug Administration Adverse Event Reporting System contains 14,475,614 reports for January 2004 to December 2021. Significantly increased constipation incidence was related to magnesium preparations combined with acid suppressants, especially proton pump inhibitors (P < 0.0001, McNemar's test). Conclusion: Magnesium preparations combined with acid suppressants may diminish magnesium preparations' laxative effect; healthcare professionals should pay attention to this issue.
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Affiliation(s)
- M Maezawa
- Laboratory of Drug Informatics, Gifu Pharmaceutical Universit
| | - M Inoue
- Laboratory of Drug Informatics, Gifu Pharmaceutical University
| | - R Satake
- Laboratory of Drug Informatics, Gifu Pharmaceutical University
| | - W Wakabayashi
- Laboratory of Drug Informatics , Gifu Pharmaceutical University
| | - K Oura
- Laboratory of Drug Informatics, Gifu Pharmaceutical University
| | - F Goto
- Laboratory of Drug Informatics, Gics, Gifu Pharmaceutical University
| | - K Miyasaka
- Laboratory of Drug Informatics, Gics, Gifu Pharmaceutical University
| | - S Hirofuji
- Laboratory of Drug Informatics, Gifu Pharmaceutical University
| | - M Iwata
- Laboratory of Drug Informatics, Gifu Pharmaceutical University; Kifune Pharmacy
| | - T Suzuki
- Laboratory of Drug Informatics, Gifu Pharmaceutical University; Gifu Prefectural Government
| | - H Tanaka
- Laboratory of Drug Informatics, Gifu Pharmaceutical University; Chubu Yakuhin Co. Ltd
| | - S Nishida
- Department of Pharmacy, Gifu University Hospital
| | - S Shimizu
- Department of Pharmacy, Gifu University Hospital
| | - A Suzuki
- Department of Pharmacy, Gifu University Hospital
| | - K Iguchi
- Laboratory of Community Pharmacy, Gifu Pharmaceutical University, Gifu, Japan
| | - M Nakamura
- Laboratory of Drug Informatics, Gifu Pharmaceutical University; Corresponding author: Mitsuhiro Nakamura, Laboratory of Drug Informatics, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu, 501-1196, Japan mnakamura@gifu-pu. ac. jp
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Kuwano R, Katsura M, Iwata M, Yokosako T, Yoshii T. Pigment-dispersing factor and CCHamide1 in the Drosophila circadian clock network. Chronobiol Int 2023; 40:284-299. [PMID: 36786215 DOI: 10.1080/07420528.2023.2166416] [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: 02/15/2023]
Abstract
Animals possess a circadian central clock in the brain, where circadian behavioural rhythms are generated. In the fruit fly (Drosophila melanogaster), the central clock comprises a network of approximately 150 clock neurons, which is important for the maintenance of a coherent and robust rhythm. Several neuropeptides involved in the network have been identified, including Pigment-dispersing factor (PDF) and CCHamide1 (CCHa1) neuropeptides. PDF signals bidirectionally to CCHa1-positive clock neurons; thus, the clock neuron groups expressing PDF and CCHa1 interact reciprocally. However, the role of these interactions in molecular and behavioural rhythms remains elusive. In this study, we generated Pdf 01 and CCHa1SK8 double mutants and examined their locomotor activity-related rhythms. The single mutants of Pdf 01 or CCHa1SK8 displayed free-running rhythms under constant dark conditions, whereas approximately 98% of the double mutants were arrhythmic. In light-dark conditions, the evening activity of the double mutants was phase-advanced compared with that of the single mutants. In contrast, both the single and double mutants had diminished morning activity. These results suggest that the effects of the double mutation varied in behavioural parameters. The double and triple mutants of per 01, Pdf 01, and CCHa1SK8 further revealed that PDF signalling plays a role in the suppression of activity during the daytime under a clock-less background. Our results provide insights into the interactions between PDF and CCHa1 signalling and their roles in activity rhythms.
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Affiliation(s)
- Riko Kuwano
- Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Maki Katsura
- Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Mai Iwata
- Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Tatsuya Yokosako
- Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
| | - Taishi Yoshii
- Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan
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Hayashi K, Fukuyasu-Matsuo S, Inoue T, Fujiwara M, Asai Y, Iwata M, Suzuki S. Effects of cyclic stretching exercise on long-lasting hyperalgesia, joint contracture, and muscle injury following cast immobilization in rats. Physiol Res 2020; 69:861-870. [PMID: 32901491 DOI: 10.33549/physiolres.934437] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The effects of exercise on mechanical hyperalgesia, joint contracture, and muscle injury resulting from immobilization are not completely understood. This study aimed to investigate the effects of cyclic stretching on these parameters in a rat model of chronic post-cast pain (CPCP). Seventeen 8-week-old Wistar rats were randomly assigned to (1) control group, (2) immobilization (CPCP) group, or (3) immobilization and stretching exercise (CPCP+STR) group. In the CPCP and CPCP+STR groups, both hindlimbs of each rat were immobilized in full plantar flexion with a plaster cast for a 4-week period. In the CPCP+STR group, cyclic stretching exercise was performed 6 days/week for 2 weeks, beginning immediately after cast removal prior to reloading. Although mechanical hyperalgesia in the plantar skin and calf muscle, ankle joint contracture, and gastrocnemius muscle injury were observed in both immobilized groups, these changes were significantly less severe in the CPCP+STR group than in the CPCP group. These results clearly demonstrate the beneficial effect of cyclic stretching exercises on widespread mechanical hyperalgesia, joint contracture, and muscle injury in a rat model of CPCP.
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Affiliation(s)
- K Hayashi
- Multidisciplinary Pain Center, Aichi Medical University, Nagakute, Japan, Department of Rehabilitation, Faculty of Health Sciences, Nihon Fukushi University, Handa, Japan.
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Ohtake H, Ishii J, Nishimura H, Kawai H, Muramatsu T, Harada M, Motoyama S, Watanabe E, Ozaki Y, Iwata M. Prospective validation of 0-hour/1-hour algorithm using high-sensitivity cardiac troponin I in Japanese patients presenting to emergency department. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The diagnostic performance of 0-hour/1-hour algorithm using high-sensitivity cardiac troponin I (hsTnI) for non-ST-segment elevation myocardial infarction (NSTEMI) has not been evaluated in an Asian population.
Purpose
We aimed to prospectively validate the 0-hour/1-hour algorithm using hsTnI in a Japanese population.
Method
We enrolled 754 Japanese patients (mean age of 70 years, 395 men) presenting to our emergency department with symptoms suggestive of NSTEMI. The hsTnI concentration was measured using the Siemens ADVIA Centaur hsTnI assay at presentation and after 1 hour. Patients were divided into three groups according to the algorithm: hsTnI below 3 ng/L (only applicable if chest pain onset >3 hours) or below 6 ng/L and delta 1 hour below 3 ng/L were the “rule-out” group; hsTnI at least 120 ng/L or delta 1 hour at least 12 ng/L were in the “rule-in” group; the remaining patients were classified as the “observe” group. Based on the Fourth Universal Definition of Myocardial Infarction, the final diagnosis was adjudicated by 2 independent cardiologists using all available information, including coronary angiography, coronary computed tomography, and follow-up data. Safety of rule-out was quantified by the negative predictive value (NPV) for NSTEMI, accuracy of rule-in by the positive predictive value (PPV), and overall efficacy by the proportion of patients triaged towards rule-out or rule-in within 1 hour.
Results
Prevalence of NSTEMI was 6.5%. The safety of rule-out (NPV 100%), accuracy of rule-in (PPV 26%), and overall efficacy (54%) were shown in Figure.
Conclusion
The 0-hour/1-hour algorithm using hsTnI is very safe and effective in triaging Japanese patients with suspected NSTEMI.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- H Ohtake
- Fujita Health University, Toyoake, Japan
| | - J Ishii
- Fujita Health University, Toyoake, Japan
| | | | - H Kawai
- Fujita Health University, Toyoake, Japan
| | | | - M Harada
- Fujita Health University, Toyoake, Japan
| | - S Motoyama
- Fujita Health University, Toyoake, Japan
| | - E Watanabe
- Fujita Health University, Toyoake, Japan
| | - Y Ozaki
- Fujita Health University, Toyoake, Japan
| | - M Iwata
- Fujita Health University, Toyoake, Japan
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Iwata M, Takeichi T, Muro Y, Akiyama M. Late‐onset Langerhans cell histiocytosis without extracutaneous involvement. J Cutan Immunol Allergy 2020. [DOI: 10.1002/cia2.12122] [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: 11/11/2022] Open
Affiliation(s)
- Mai Iwata
- Department of Dermatology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Takuya Takeichi
- Department of Dermatology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Yoshinao Muro
- Department of Dermatology Nagoya University Graduate School of Medicine Nagoya Japan
| | - Masashi Akiyama
- Department of Dermatology Nagoya University Graduate School of Medicine Nagoya Japan
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Iwata M, Nakajima S, Tie D, Kabashima K. 408 Skin colonized Staphylococcus aureus exacerbates the inflammation of murine irritant contact dermatitis via modulating innate immune pathways. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.410] [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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7
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A Masengi KW, Mandagi IF, Manu L, Silooy F, Labaro IL, Masengi AWR, Sebua N, Masengi EIKG, Pinontoan B, Hutabarat Y, Hukom F, Iwata M, Abe Y, Sato Y, Kimura R, Yamahira K. Study on existence of the fisheries resources abundance by using environmental deoxyribonucleic acid (e-DNA) approach at fishing grounds in the Sulawesi Sea, Indonesia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/567/1/012026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Iwata M, Kasai H. A case of calcium pyrophosphate dihydrate crystal deposition disease suspected the tumor of temporomandibular joint. Int J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.ijom.2019.03.858] [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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9
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Suzuki J, Nakai N, Kondo N, Tsuji H, Inagaki R, Furukawa S, Iwata M, Nishida S, Ito Y. Ten-Year Evaluation of the TOYOTA Prehospital Stroke Scale for Tissue Plasminogen Activator Intravenous Therapy in the Real World. Cerebrovasc Dis 2018; 46:184-192. [PMID: 30384371 DOI: 10.1159/000494364] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 10/08/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Emergency medical services are an important part of acute stroke management. We devised a prehospital stroke scale, the TOYOTA prehospital stroke scale for tissue plasminogen activator (t-PA) intravenous therapy (TOPSPIN) for triaging patients with ischemic stroke and especial indications for intravenous t-PA therapy in December 2006; this scale comprises 5 items including consciousness, atrial fibrillation, language disorder, disturbance of the upper extremities, and disturbance of the lower extremities. The aim of this study was to analyze the results of 10 years of TOPSPIN implementation and to distinguish ischemic stroke from hemorrhagic stroke in the real world. METHODS We prospectively enrolled consecutive patients who were transferred to our hospital and evaluated by Toyota city ambulance services using the TOPSPIN from December 2006 to January 2017. We examined definite diagnosis at the time of hospital discharge (ischemic stroke, hemorrhagic stroke, or stroke mimic), positive-predictive value of the stroke, the rate of the recanalization therapy, and clinical differentiation among patients with hemorrhagic stroke, ischemic stroke, and stroke mimics. RESULTS A total of 1,482 consecutive patients were enrolled; 1,134 (76.5%) were patients with stroke (628 ischemic-type, 34 transient ischemic attack-type, and 472 hemorrhagic-type) and 348 (23.5%) without stroke (80 with seizure, 42 with syncope, 27 with hypoglycemia, and 199 other). Among 628 patients with ischemic stroke, 130 (20.7%) received intravenous recombinant t-PA treatment, endovascular therapy, or both. The presence of atrial fibrillation, older age, lower blood pressure, and lower total TOPSPIN score was more commonly associated with ischemic stroke than with hemorrhagic stroke. In multivariable logistic regression analysis, the presence of atrial fibrillation was independently associated with ischemic stroke (OR 2.33; 95% CI 1.61-3.40). CONCLUSIONS The TOPSPIN is a simple prehospital stroke scale that includes an assessment of atrial fibrillation. Detection of atrial fibrillation in the prehospital stage may point to a higher probability of ischemic stroke.
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Affiliation(s)
- Junichiro Suzuki
- Department of Neurology, TOYOTA Memorial Hospital, Toyota, Japan,
| | - Noriyoshi Nakai
- Department of Neurology, Shonan-Kamakura General Hospital, Kamakura, Japan
| | - Naohide Kondo
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hirotake Tsuji
- Department of Neurology, Okazaki City Hospital, Okazaki, Japan
| | - Ryosuke Inagaki
- Department of Neurology, TOYOTA Memorial Hospital, Toyota, Japan
| | - Soma Furukawa
- Department of Neurology, TOYOTA Memorial Hospital, Toyota, Japan
| | - Mai Iwata
- Department of Neurology, Chutoen General Medical Center, Kakegawa, Japan
| | - Suguru Nishida
- Department of Neurology, TOYOTA Memorial Hospital, Toyota, Japan
| | - Yasuhiro Ito
- Department of Neurology, TOYOTA Memorial Hospital, Toyota, Japan
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Yabuwaki K, Iwata M, Ono K. Influence of environmental factors on well-being and care burden of elderly family caregivers: a bayesian structural equation modeling approach. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Yamazaki K, Yasui H, Yamaguchi K, Kagawa Y, Kuboki Y, Yoshino T, Gamoh M, Komatsu Y, Satake H, Goto M, Tanioka H, Oki E, Kotaka M, Makiyama A, Denda T, Soeda J, Shibya K, Iwata M, Oba K, Kato T. A phase I/II study of panitumumab combined with TAS-102 in patients (pts) with RAS wild-type (wt) metastatic colorectal cancer (mCRC) refractory to standard chemotherapy: APOLLON study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.252] [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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12
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Suzuki J, Iwata M, Moriyoshi H, Nishida S, Yasuda T, Ito Y. Gastro-intestinal Involvement in m.3243A>G-associated Mitochondrial Myopathy, Encephalopathy, Lactic Acidosis, and Stroke-like Episodes. Intern Med 2018; 57:771. [PMID: 29151541 PMCID: PMC5874361 DOI: 10.2169/internalmedicine.9632-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
| | - Mai Iwata
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | | | - Suguru Nishida
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | - Takeshi Yasuda
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | - Yasuhiro Ito
- Department of Neurology, TOYOTA Memorial Hospital, Japan
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Nishida S, Inagaki R, Furukawa S, Iwata M, Suzuki J, Ito Y, Yasuda T. Selegiline hydrochloride (SEL) inhibits the uptake of 3 meta–iodobenzylguanidine (MIBG) and influences the result of MIBG myocardial scintigraphy in patients with parkinsonism. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Iwata M. Dawn of the modern neurology in Japan. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Suzuki J, Inagaki R, Furukawa S, Iwata M, Nakai N, Nishida S, Ito Y. Efficacy of prehospital stroke scale including atrial fibrillation (Topspin) –10 years experiences. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2829] [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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16
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Uchiyama Y, Iwata M, Hashida H, Kitagawa K. Silent basal ganglionic infarcts and white matter lesions; which is more responsible for the clinical feautures of Alzheimer's daisease? J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Motomura C, Matsuzaki H, Ono R, Iwata M, Okabe K, Akamine Y, Wakatsuki M, Murakami Y, Taba N, Odajima H. Aspirin is an enhancing factor for food-dependent exercise-induced anaphylaxis in children. Clin Exp Allergy 2017; 47:1497-1500. [PMID: 28892197 DOI: 10.1111/cea.13026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- C Motomura
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - H Matsuzaki
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - R Ono
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - M Iwata
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - K Okabe
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - Y Akamine
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - M Wakatsuki
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - Y Murakami
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - N Taba
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - H Odajima
- Department of Pediatrics, National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
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Moriyoshi H, Furukawa S, Iwata M, Suzuki J, Nakai N, Nishida S, Ito Y. A case of intracranial arterial dolichoectasia with 4 repeated cerebral infarctions in 6 months and enlargement of basilar artery. Rinsho Shinkeigaku 2017; 57:124-129. [PMID: 28228620 DOI: 10.5692/clinicalneurol.cn-000989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 78-year-old man was admitted to our hospital because of sudden right hemiparesis and dysarthria. His cranial MRI showed an area of hyperintensity in left pons on DWI and MRA revealed dilated, elongated and tortuous intracranial artery. We diagnosed as acute phase ischemic stroke and intracranial arterial dolichoectasia (IADE). Intravenous infusion of rt-PA was performed 157 minutes after the onset of symptoms, and his hemiparesis improved. However, he subsequently suffered from cerebral infarction 4 times in 6 months, and we treated him twice with thrombolytic therapy. Although thrombolytic therapy was effective in the short term and antithrombotic therapy was continued, he had bilateral hemiplegia and severe dysphagia because of repeated cerebral infarctions. Hence basilar artery was dilated with intramural hemorrhage over 6 months, and we discontinued antithrombolytic therapy. It is possible that antithrombolytic therapy affects enlargement of IADE. Antithrombolytic therapy for IADE should be done carefully.
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Abstract
We report the case of a mother and two children who shared a mitochondrial DNA A3243G mutation. The mother had diabetes mellitus, neurogenic bladder, bradykinesia, dystonia, and slowly progressive cerebellar ataxia. Her two daughters were diagnosed with mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes at adolescence. They all presented with gastrointestinal symptoms at an advanced clinical stage. They were diagnosed with chronic intestinal pseudo-obstruction, and they were resistant to therapy. The mother and her youngest daughter died from aspiration pneumonia because of vomiting. The determination of chronic intestinal pseudo-obstruction is an important prognostic factor in patients with the mitochondrial DNA A3243G variant.
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Affiliation(s)
| | - Mai Iwata
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | | | - Suguru Nishida
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | - Takeshi Yasuda
- Department of Neurology, TOYOTA Memorial Hospital, Japan
| | - Yasuhiro Ito
- Department of Neurology, TOYOTA Memorial Hospital, Japan
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Yokoe I, Kobayashi H, Nishiwaki A, Sugiyama K, Nagasawa Y, Karasawa H, Iwata M, Nozaki T, Ikumi N, Inomata H, Shiraiwa H, Kitamura N, Takei M. FRI0204 Effect of Tocilizumab Treatment on QTc Interval in Patients with Rheumatoid Arthritis without Cardiac Symptoms. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.4032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Nishiwaki A, Kobayashi H, Nagasawa Y, Sugiyama K, Ikumi N, Nozaki T, Inomata H, Karasawa H, Shiraiwa H, Iwata M, Kitamura N, Takei M. FRI0119 The Association between QTc Interval and Myocardial Abnormalities in Rheumatoid Arthritis Patients without Cardiac Symptoms, by Assessed Using Cardiac Magnetic Resonance Imaging. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3187] [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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22
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Sugiyama K, Kobayashi H, Kobayashi Y, Nagasawa Y, Ikumi N, Nozaki T, Inomata H, Shiraiwa H, Karasawa H, Iwata M, Kitamura N, Matsukawa Y, Takei M. THU0337 Raynaud Phenomenon Is Associated with Myocardial Fibrosis in Primary Sjögren Syndrome, Assessed by A Cardiac Magnetic Resonance Approach: A Prospective Pilot Study at A Single Center. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2327] [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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Urushihara D, Komabuchi M, Ishizawa N, Iwata M, Fukuda K, Asaka T. B23-O-03Observation of the crystal structure and the domains in the layered bismuth titanate BÌ 4TÌ 3O 12. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv161] [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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Sugiyama K, Kobayashi H, Kobayashi Y, Nagasawa Y, Ikumi N, Nozaki T, Inomata H, Shiraiwa H, Karasawa H, Kitamura N, Iwata M, Matsukawa Y, Takei M. FRI0472 Detection of Left Ventricular Morphology and Myocardial Abnormalities Using Contrast Cardiac Magnetic Resonance Imaging at 3.0 Tesla in Systemic Sclerosis Without Cardiac Manifestations. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3994] [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: 11/04/2022]
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Sasaki T, Iwata M, Yamato M, Takeda Y, Imamura Y, Hayashi T. Further characterization of basement membrane-associated collagen in comparison with type IV collagen alpha-1-chain in the extracts of human placenta with monoclonal antibodies. Contrib Nephrol 2015; 107:64-9. [PMID: 8004976 DOI: 10.1159/000422962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- T Sasaki
- Department of Chemistry, College of Arts and Sciences, University of Tokyo, Japan
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Matsuzaki H, Iwata M, Miyamoto T, Terashige T, Iwano K, Takaishi S, Takamura M, Kumagai S, Yamashita M, Takahashi R, Wakabayashi Y, Okamoto H. Excitation-photon-energy selectivity of photoconversions in halogen-bridged Pd-chain compounds: Mott insulator to metal or charge-density-wave state. Phys Rev Lett 2014; 113:096403. [PMID: 25215998 DOI: 10.1103/physrevlett.113.096403] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Indexed: 06/03/2023]
Abstract
Ultrafast photoinduced transitions of a one-dimensional Mott insulator into two distinct electronic phases, metal and charge-density-wave (CDW) state, were achieved in a bromine-bridged Pd-chain compound [Pd(en)2Br](C5-Y)2H2O (en=ethylenediamine and C5-Y=dialkylsulfosuccinate), by selecting the photon energy of a femtosecond excitation pulse. For the resonant excitation of the Mott-gap transition, excitonic states are generated and converted to one-dimensional CDW domains. For the higher-energy excitation, free electron and hole carriers are produced, giving rise to a transition of the Mott insulator to a metal. Such selectivity in photoconversions by the choice of initial photoexcited states opens a new possibility for the developments of advanced optical switching and memory functions.
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Affiliation(s)
- H Matsuzaki
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - M Iwata
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - T Miyamoto
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - T Terashige
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
| | - K Iwano
- Institute of Materials Structure Science, Graduate University for Advanced Studies, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801, Japan
| | - S Takaishi
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - M Takamura
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - S Kumagai
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - M Yamashita
- Department of Chemistry, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - R Takahashi
- Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Y Wakabayashi
- Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - H Okamoto
- Department of Advanced Materials Science, University of Tokyo, Kashiwa, Chiba 277-8561, Japan
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Yokota-Nakatsuma A, Takeuchi H, Ohoka Y, Kato C, Song SY, Hoshino T, Yagita H, Ohteki T, Iwata M. Retinoic acid prevents mesenteric lymph node dendritic cells from inducing IL-13-producing inflammatory Th2 cells. Mucosal Immunol 2014; 7:786-801. [PMID: 24220301 DOI: 10.1038/mi.2013.96] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 10/12/2013] [Indexed: 02/04/2023]
Abstract
The vitamin A (VA) metabolite retinoic acid (RA) affects the properties of T cells and dendritic cells (DCs). In VA-deficient mice, we observed that mesenteric lymph node (MLN)-DCs induce a distinct inflammatory T helper type 2 (Th2)-cell subset that particularly produces high levels of interleukin (IL)-13 and tumor necrosis factor-α (TNF-α). This subset expressed homing receptors for skin and inflammatory sites, and was mainly induced by B220(-)CD8α(-)CD11b(+)CD103(-) MLN-DCs in an IL-6- and OX40 ligand-dependent manner, whereas RA inhibited this induction. The corresponding MLN-DC subset of VA-sufficient mice induced a similar T-cell subset in the presence of RA receptor antagonists. IL-6 induced this subset differentiation from naive CD4(+) T cells upon activation with antibodies against CD3 and CD28. Transforming growth factor-β inhibited this induction, and reciprocally enhanced Th17 induction. Treatment with an agonistic anti-OX40 antibody and normal MLN-DCs enhanced the induction of general inflammatory Th2 cells. In VA-deficient mice, proximal colon epithelial cells produced TNF-α that may have enhanced OX40 ligand expression in MLN-DCs. The repeated oral administrations of a T cell-dependent antigen primed VA-deficient mice for IL-13-dependent strong immunoglobulin G1 (IgG1) responses and IgE responses that caused skin allergy. These results suggest that RA inhibits allergic responses to oral antigens by preventing MLN-DCs from inducing IL-13-producing inflammatory Th2 cells.
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Affiliation(s)
- A Yokota-Nakatsuma
- 1] Laboratory of Immunology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan [2] JST, CREST, Tokyo, Japan
| | - H Takeuchi
- 1] Laboratory of Immunology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan [2] JST, CREST, Tokyo, Japan
| | - Y Ohoka
- 1] Laboratory of Immunology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan [2] JST, CREST, Tokyo, Japan
| | - C Kato
- Institute of Neuroscience, Tokushima Bunri University, Kagawa, Japan
| | - S-Y Song
- 1] JST, CREST, Tokyo, Japan [2] Institute of Neuroscience, Tokushima Bunri University, Kagawa, Japan
| | - T Hoshino
- Department of Medicine, Kurume University School of Medicine, Fukuoka, Japan
| | - H Yagita
- Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan
| | - T Ohteki
- 1] JST, CREST, Tokyo, Japan [2] Department of Biodefense Research, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - M Iwata
- 1] Laboratory of Immunology, Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan [2] JST, CREST, Tokyo, Japan
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Inomata H, Kobayashi H, Kobayashi Y, Ikumi N, Yokoe I, Nagasawa Y, Sugiyama K, Nozaki T, Shiraiwa H, Kitamura N, Iwata M, Takei M. AB0321 IL-6 Blockade Reduces Circulating N-Terminal Pro-Brain Natriuretic Peptide Levels in Patients with Active Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2189] [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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Ikumi N, Inomata H, Nagasawa Y, Sugiyama K, Nozaki T, Yokoe I, Shiraiwa H, Karasawa H, Kitamura N, Iwata M, Matsukawa Y, Kobayashi H, Kobayashi Y, Takei M. FRI0437 How do we Treat Patients with Focus Score ≥1, but not Consistent with the New American College of Rheumatology Classification Criteria for SjÖGren's Syndrome? Evaluation from Study in Japanese Patients. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2684] [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: 11/04/2022]
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Kobayashi Y, Ando Y, Nishiura M, Kishizawa H, Iwata M, Matake N, Tomida K. Recent Progress of SOFC Combined Cycle System with Segmented-In-Series Tubular Type Cell Stack at MHI. ACTA ACUST UNITED AC 2013. [DOI: 10.1149/05701.0053ecst] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Inada S, Ono T, Shibata N, Iwata M, Haraguchi R, Ashihara T, Abe A, Ikeda T, Mitsui K, Boyett M, Dobrzynski H, Nakazawa K. Simulation study of ventricular rate control therapy during atrial fibrillation using one-dimensional cable model with two conduction pathways. J Electrocardiol 2013. [DOI: 10.1016/j.jelectrocard.2013.05.080] [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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Iwata M, Inoue S, Kawaguchi M, Furuya H. Effects of diazepam and flumazenil on forebrain ischaemia in a rat model of benzodiazepine tolerance. Br J Anaesth 2012; 109:935-42. [DOI: 10.1093/bja/aes340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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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Ota M, Fukami T, Arakawa M, Hayashi H, Suzuki T, Iwata M, Tomono K, Hidaka S. Examination of factors that delay the elution of acetaminophen from over-the-counter drugs. Pharmazie 2012; 67:1018-1025. [PMID: 23346767] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The information on the stability of medications is important to secure their quality. There is, however, little information about the stability of medications which assume to be kept by patients and customers. We previously showed that a delay in drug release occurs in some over-the-counter (OTC) drugs following storage in a high temperature, high humidity environment. In this study we prepared model tablet formulations containing an active ingredient and excipients to investigate the cause of this delayed release. The results reveal that delayed release occurs in preparations compounded with acetaminophen (AA) as the active ingredient and erythritol (ET) and crospovidone (CP) as excipients. In addition, ET deliquesces in a high humidity environment, then incorporates other particles during room temperature storage to form an aggregate. SEM observations and micropore distribution measurements conducted on OTC tablets that exhibit delayed release revealed that the number of intraparticle pores decreased after storage under high temperature, high humidity conditions. Thus, the delayed release by these pharmaceutical product formulations may be due to a change in the micropore structure both on the surface and within the particles, thereby decreasing the solvent infiltration pathways leading to the interior of the preparation.
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Affiliation(s)
- M Ota
- Department of Pharmacy, School of Pharmacy, Nihon University, Chiba, Japan
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Okamoto K, Kodama K, Takase K, Nakamoto K, Coffey H, Selvaraj A, Smith P, Iwata M, Tsuruoka A. 307 Anti-tumor Activities of Lenvatinib Against RET Gene Fusion Driven Tumor Models. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)72105-6] [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: 11/24/2022]
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Kudo C, Naruishi K, Maeda H, Abiko Y, Hino T, Iwata M, Mitsuhashi C, Murakami S, Nagasawa T, Nagata T, Yoneda S, Nomura Y, Noguchi T, Numabe Y, Ogata Y, Sato T, Shimauchi H, Yamazaki K, Yoshimura A, Takashiba S. Assessment of the Plasma/Serum IgG Test to Screen for Periodontitis. J Dent Res 2012; 91:1190-5. [DOI: 10.1177/0022034512461796] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Chronic periodontitis is a silent infectious disease prevalent worldwide and affects lifestyle-related diseases. Therefore, efficient screening of patients is essential for general health. This study was performed to evaluate prospectively the diagnostic utility of a blood IgG antibody titer test against periodontal pathogens. Oral examination was performed, and IgG titers against periodontal pathogens were measured by ELISA in 1,387 individuals. The cut-off value of the IgG titer was determined in receiver operating characteristic curve analysis, and changes in periodontal clinical parameters and IgG titers by periodontal treatment were evaluated. The relationships between IgG titers and severity of periodontitis were analyzed. The best cut-off value of IgG titer against Porphyromonas gingivalis for screening periodontitis was 1.682. Both clinical parameters and IgG titers decreased significantly under periodontal treatment. IgG titers of periodontitis patients were significantly higher than those of healthy controls, especially in those with sites of probing pocket depth over 4 mm. Multiplied cut-off values were useful to select patients with severe periodontitis. A blood IgG antibody titer test for Porphyromonas gingivalis is useful to screen hitherto chronic periodontitis patients (ClinicalTrials.gov number NCT01658475).
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Affiliation(s)
- C. Kudo
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
| | - K. Naruishi
- Department of Periodontics and Endodontics, Okayama University Hospital, Okayama, Japan
- currently, Division of Endodontology, Iwate Medical University, Department of Conservative Dentistry and Oral Rehabilitation, Iwate, Japan
| | - H. Maeda
- Department of Pathophysiology - Periodontal Science, Okayama, University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y. Abiko
- Department of Biochemistry and Molecular Biology, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - T. Hino
- Department of Periodontal Medicine, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, Japan
| | - M. Iwata
- Toyota Motor Corporation, Tokyo/Aichi, Japan
| | | | - S. Murakami
- Department of Periodontology, Division of Oral Biology and Disease Control, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - T. Nagasawa
- Department of Hard Tissue Engineering, Tokyo Medical and Dental University Graduate School, Tokyo, Japan
- currently, Department of Oral Rehabilitation, Division of Periodontology and Endodontology, School of Dentistry, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - T. Nagata
- Department of Periodontology and Endodontology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - S. Yoneda
- Department of Periodontology and Endodontology, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Y. Nomura
- Department of Translational Research, School of Dental Medicine, Tsurumi University, Kanagawa, Japan
| | - T. Noguchi
- Department of Periodontology, School of Dentistry, Aichi-Gakuin University, Aichi, Japan
| | - Y. Numabe
- Department of Periodontology, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan
| | - Y. Ogata
- Department of Periodontology, Nihon University School of Dentistry at Matsudo, Chiba, Japan
| | - T. Sato
- Department of Oral Health, School of Life Dentistry at Tokyo, Nippon Dental University, Tokyo, Japan
| | - H. Shimauchi
- Department of Oral Biology, Division of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Miyagi, Japan
| | - K. Yamazaki
- Laboratory of Periodontology and Immunology, Department of Oral Health and Welfare, Niigata University Faculty of Dentistry, Niigata, Japan
| | - A. Yoshimura
- Department of Periodontology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S. Takashiba
- Department of Pathophysiology - Periodontal Science, Okayama, University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Kobayashi H, Iwata M, Mitani H, Yamada T, Nakagome K, Kaneko K. Valproic acid improves the tolerance for the stress in learned helplessness rats. Neurosci Res 2012; 72:355-63. [PMID: 22240171 DOI: 10.1016/j.neures.2011.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 12/01/2011] [Accepted: 12/14/2011] [Indexed: 01/16/2023]
Abstract
In this study, we investigated whether previously stressed rats with learned helplessness (LH) paradigm could recover from depressive-like behavior four weeks after the exposure, and also whether chronic treatment with valproic acid (VPA) could prevent behavioral despair due to the second stress on days 54 in these animals. Four weeks after induction of LH, we confirmed behavioral remission in the previously stressed rats. Two-way analysis of variance (ANOVA) performed with two factors, pretreatment (LH or Control) and drug (VPA or Saline), revealed a significant main effect of the drug on immobility time in forced swimming test. Post hoc test showed a shorter immobility time in the LH+VPA group than in the LH+Saline group. Immunohistochemical study of synapsin I showed a significant effect of drug by pretreatment interaction on immunoreactivity of synapsin I in the hippocampus: its expression levels in the regions were higher in the LH+VPA group than in the LH+Saline group. These results suggest that VPA could prevent the reappearance of stress-induced depressive-like behaviors in the rats recovering from prior stress, and that the drug-induced presynaptic changes in the expression of synapsin I in the hippocampus of LH animals might be related to improved tolerance toward the stress.
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Affiliation(s)
- H Kobayashi
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago 683-8504, Japan.
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Imamura M, Iwata M, Maegawa H, Watada H, Hirose H, Tanaka Y, Tobe K, Kaku K, Kashiwagi A, Kawamori R, Nakamura Y, Maeda S. Genetic variants at CDC123/CAMK1D and SPRY2 are associated with susceptibility to type 2 diabetes in the Japanese population. Diabetologia 2011; 54:3071-7. [PMID: 21909839 DOI: 10.1007/s00125-011-2293-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 07/29/2011] [Indexed: 01/08/2023]
Abstract
AIMS/HYPOTHESIS Recently, rs10906115 in CDC123/CAMK1D, rs1359790 near SPRY2, rs1436955 in C2CD4A/C2CD4B and rs10751301 in ODZ4 were identified as genetic risk variants for type 2 diabetes by a genome-wide association study in a Chinese population. The aim of the present study was to ascertain the role of these four variants in conferring susceptibility to type 2 diabetes in the Japanese population. METHODS We genotyped 11,530 Japanese individuals (8,552 type 2 diabetes cases, 2,978 controls) for the above single nucleotide polymorphisms (SNPs) and used logistic regression analysis to determine whether they were associated with type 2 diabetes. RESULTS In accordance with the findings in a Chinese population, rs10906115 A, rs1359790 C and rs1436955 G were found to be risk alleles. Both rs10906115 and rs1359790 were significantly associated with susceptibility to type 2 diabetes in our study (rs10906115 OR 1.15, 95% CI 1.08, 1.22; p = 6.10 × 10(-6); rs1359790 OR 1.14, 95% CI 1.06, 1.21; p = 2.24 × 10(-4)). Adjustment for age, sex and BMI had no significant effects on the association between these variants and the disease. We did not observe any significant associations between the SNPs and any metabolic traits, e.g. BMI, fasting plasma glucose (determined for 1,332 controls), HOMA of beta cell function (900 controls) and HOMA of insulin resistance (900 controls; p > 0.05). CONCLUSIONS/INTERPRETATION The SNPs rs10906115 A and rs1359790 C are significantly associated with susceptibility to type 2 diabetes in the Japanese population, confirming that these alleles are common susceptibility variants for type 2 diabetes in East Asian populations.
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Affiliation(s)
- M Imamura
- Laboratory for Endocrinology and Metabolism, RIKEN Center for Genomic Medicine, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
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Iwata M, Hidaka S, Ogisawa Y, Kamijyo H. Relapse and overcorrection in alveolar distraction osteogenesis for dental implant of mandible. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.972] [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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Shiraishi F, Egashira M, Iwata M, Sriyudthsak K, Hattori K. Highly reliable computation of dynamic sensitivities in metabolic reaction systems by a variable-step Taylor series method. ASIA-PAC J CHEM ENG 2011. [DOI: 10.1002/apj.630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- F. Shiraishi
- Section of Bio-process Design, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences; Kyushu University; 6-10-1, Hakozaki, Higashi-Ku Fukuoka Fukuoka 820-8581 Japan
| | - M. Egashira
- Section of Bio-process Design, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences; Kyushu University; 6-10-1, Hakozaki, Higashi-Ku Fukuoka Fukuoka 820-8581 Japan
| | - M. Iwata
- Section of Bio-process Design, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences; Kyushu University; 6-10-1, Hakozaki, Higashi-Ku Fukuoka Fukuoka 820-8581 Japan
| | - K. Sriyudthsak
- Section of Bio-process Design, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences; Kyushu University; 6-10-1, Hakozaki, Higashi-Ku Fukuoka Fukuoka 820-8581 Japan
| | - K. Hattori
- Section of Bio-process Design, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences; Kyushu University; 6-10-1, Hakozaki, Higashi-Ku Fukuoka Fukuoka 820-8581 Japan
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Kubota Y, Mizutani K, Maeda S, Seike K, Shinohara Y, Iwata M. UP-02.123 Pre-Biopsy PSA Kinetics in Prostate Cancer Screening: Analysis of Toyota Motor Corporation Employees. Urology 2011. [DOI: 10.1016/j.urology.2011.07.941] [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: 10/16/2022]
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Iwata M, Hidaka S, Shirakami K. O113. Effect of absorbable sealing materials and fibrin glue to wound on partial glossectomy. Oral Oncol 2011. [DOI: 10.1016/j.oraloncology.2011.06.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kotani H, Kishi R, Mouri A, Sashio T, Shindo J, Shiraki A, Hiramatsu T, Iwata S, Taniguchi H, Nishiyama O, Iwata M, Suzuki R, Gonda H, Niwa T, Kondo M, Hasegawa Y, Kume H, Noda Y. Influence of leukotriene pathway polymorphisms on clinical responses to montelukast in Japanese patients with asthma. J Clin Pharm Ther 2011; 37:112-6. [PMID: 21385196 DOI: 10.1111/j.1365-2710.2011.01248.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Montelukast, a cysteinyl leukotriene receptor 1 antagonist, is safe and efficacious in patients with asthma. The mechanisms underlying the significant interpatient variability in response to montelukast are not clear but are believed to be, in part, because of genetic variability. METHODS To examine the associations between polymorphisms in candidate genes in the leukotriene pathway and outcomes in patients with asthma on montelukast for 4-8 weeks, we evaluated the changes in peak expiratory flow (PEF), forced expiratory volume in 1 s (FEV(1·0) ) and patients' subjective symptom before and after montelukast treatment. DNA was collected from 252 Japanese participants. RESULTS AND DISCUSSION Two single-nucleotide polymorphisms (SNPs) in the ALOX5 (rs2115819) and LTA4H (rs2660845) genes were successfully typed. There was no difference between members of the general population (n = 200) and patients (n = 52) in each genotype frequency. Significant associations were found between SNP genotypes in the LTA4H gene and changes in PEF and FEV(1·0) . The PEF and FEV(1·0) responses to montelukast in the A/A genotypes (n = 4) for the LTA4H SNP were significantly higher than those in the G allele carriers (A/G+G/G) (n = 17). WHAT IS NEW AND CONCLUSION Despite the small sample size, our results suggest that genetic variation in leukotriene pathway candidate genes contributes to variability in clinical responses to montelukast in Japanese patients with asthma.
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Affiliation(s)
- H Kotani
- Division of Clinical Sciences and Neuropsychopharmacology, Meijo University Graduate School of Pharmaceutical Sciences, Nagoya, Japan
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Ogita Y, Takahashi Y, Iwata M, Sasatsu M, Onishi H, Hashimoto S, Machida Y. Comparison of physical properties and drug-releasing characteristics of white petrolatums. Pharmazie 2010; 65:801-804. [PMID: 21155385] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
White petrolatums of Japanese Pharmacopoeia grade and Sun white marketed as a cosmetic were characterized by measuring their physical properties and drug-releasing characteristics. White petrolatums of Japanese Pharmacopoeia grade available commercially in Japan were Perfecta, White 1S, Ultima, Snow, Snow V and Regent (Propeto). Penetrating stress, shear stress and spreading properties were measured as physical properties of the white petrolatums. The physical properties of white petrolatums varied, and Regent was the softest and the most spreadable ointment base. In vitro release test was performed using flow-through Franz diffusion cells. Fluorescein isothiocyanate and tetracycline hydrochloride were used as drug models. Their release characteristics varied among the tested white petrolatums, and Regent had the best release properties. Among the white petrolatums, with the exception of Regent, the release properties should depend on the distribution of drugs between white petrolatum and the receiver solution. Considerations of usability and characteristics of theprincipal agent are needed when choosing white petrolatums.
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Affiliation(s)
- Y Ogita
- Department of Pharmacy, Yokohama City University Medical Center, Yokohama, Japan
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LeBlanc BW, Iwata M, Mallon AP, Rupasinghe CN, Goebel DJ, Marshall J, Spaller MR, Saab CY. A cyclic peptide targeted against PSD-95 blocks central sensitization and attenuates thermal hyperalgesia. Neuroscience 2010; 167:490-500. [PMID: 20167266 DOI: 10.1016/j.neuroscience.2010.02.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 02/09/2010] [Accepted: 02/11/2010] [Indexed: 12/29/2022]
Abstract
Post-synaptic density protein PSD-95 is emerging as a valid target for modulating nociception in animal studies. Based on the key role of PSD-95 in neuronal plasticity and the maintenance of pain behavior, we predicted that CN2097, a peptide-based macrocycle of nine residues that binds to the PSD-95 Discs large, Zona occludens 1 (PDZ) domains of PSD-95, would interfere with physiologic phenomena in the spinal cord related to central sensitization. Furthermore, we tested whether spinal intrathecal injection of CN2097 attenuates thermal hyperalgesia in a rat model of sciatic neuropathy. Results demonstrate that spinal CN2097 reverses hyperexcitability of wide dynamic range (WDR) neurons in the dorsal horn of neuropathic rats and decreases their evoked responses to peripheral stimuli (brush, low caliber von Frey and pressure), whereas CN5125 ("negative control") has no effect. CN2097 also blocks C-fiber long-term potentiation (LTP) in the dorsal horn, which is linked to neuronal plasticity and central sensitization. At a molecular level, CN2097 attenuates the increase in phosphorylated p38 MAPK, a key intracellular signaling pathway in neuropathic pain. Moreover, spinal injection of CN2097 blocks thermal hyperalgesia in neuropathic rats. We conclude that CN2097 is a small molecule peptide with putative anti-nociceptive effects that modulates physiologic phenomena related to central sensitization under conditions of chronic pain.
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Affiliation(s)
- B W LeBlanc
- Department of Surgery, Rhode Island Hospital, Brown Alpert Medical School and Department of Neuroscience, Brown University, Providence, RI 02903, USA
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Yoshizawa H, Masuda Y, Kondo C, Momose M, Kusakabe K, Iwata M, Uchiyama S. Neural substrates for attention: A study on resting FDG-PET-neuropsychology correlation in normal subjects. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)72104-4] [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: 11/29/2022] Open
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Iwata M, Fukami T, Kawashima D, Sakai M, Furuishi T, Suzuki T, Tomono K, Ueda H. Effectiveness of mechanochemical treatment with cyclodextrins on increasing solubility of glimepiride. Pharmazie 2009; 64:390-394. [PMID: 19618676 DOI: 10.1691/ph.2009.9045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We investigated the enhancement of the solubility of glimepiride (GLM), a poorly water soluble anti-diabetes drug, by cogrinding it with various cyclodextrins (CDs) using a ball mill. The phase solubility profiles of GLM with beta-CD and its derivatives were classified as A(L)-type, indicating the formation of a 1 : 1 stoichiometric water-soluble complex. When GLM crystals were coground with beta-CD using a ball mill for 48 h, the aqueous solubility of GLM increased to approximately 250 microg/mL. The powder X-ray diffraction pattern showed that the peak intensity of crystalline GLM decreased after cogrinding. Endothermic peaks of around 208 degrees C, which were assigned to the fusion of GLM crystals, disappeared in the DSC measurement of the ground mixture. After cogrinding, two sharp peaks assigned to sulfonylurea and benzoyl carbonyl stretching bands varied to broaden the peak to around 1700 cm(-1) in the C=O stretching region. These results suggested the formation of a complex between GLM and beta-CD during cogrinding.
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Affiliation(s)
- M Iwata
- Sanofi-Aventis K.K, Tokyo, Japan
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48
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Hagiwara K, Ochi H, Suzuki S, Shimizu Y, Tokuda T, Murai H, Shigeto H, Ohyagi Y, Iwata M, Iwaki T, Kira JI. Highly selective leptomeningeal amyloidosis with transthyretin variant Ala25Thr. Neurology 2009; 72:1358-60. [PMID: 19365058 DOI: 10.1212/wnl.0b013e3181a0fe74] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [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] Open
Affiliation(s)
- K Hagiwara
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
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Kobayashi M, Ono Y, Shibata N, Kobayashi M, Shimizu Y, Ohta K, Iwata M, Uchiyama S. Correlation between Magnetic Resonance Imaging Findings and Pathological Observations in Tumefactive Multiple Sclerosis. Neuroradiol J 2009; 22:155-63. [DOI: 10.1177/197140090902200203] [Citation(s) in RCA: 3] [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] [Received: 03/12/2009] [Accepted: 03/21/2009] [Indexed: 11/16/2022] Open
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. Tumefactive MS (TMS) is a subtype of MS characterized by solitary or multiple mass lesions with open-ring enhancement on brain magnetic resonance imaging (MRI). Three TMS cases, diagnosed histopathologically by brain biopsy, that were difficult to distinguish from brain tumors or brain abscesses on MRI are presented. On T2-weighted imaging (T2WI) the lesions were high intensity in the center and periphery, with open-ring contrast enhancement at the periphery; iso- to low intensity areas (“T2 low rim”) were seen in the surrounding region. Histopathological examination revealed the characteristic features of TMS: severe central demyelination and focal necrosis, peripheral neovascularization and perivascular inflammatory cell infiltration, and perifocal edema. On immunochemistry, both the endothelial cells of the neovasculature and the surrounding macrophages in the periphery expressed vascular endothelial growth factor and monocyte chemoattractant protein-1, which mediate inflammation and angioneogenesis and increase vascular permeability. These findings correspond to the T2 low rim co-localizing with the site of gadolinium enhancement on MRI. Thus, the present study clearly demonstrates the correlation between the radiological features and the pathophysiological aspects of TMS, which may contribute to more precise diagnosis of TMS.
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Affiliation(s)
- M. Kobayashi
- Department of Neurology, Tokyo Women's Medical University; Tokyo, Japan
| | - Y. Ono
- Department of Neuroradiology, Tokyo Women's Medical University; Tokyo, Japan
| | - N. Shibata
- Department of Pathology, Tokyo Women's Medical University; Tokyo, Japan
| | - M. Kobayashi
- Department of Pathology, Tokyo Women's Medical University; Tokyo, Japan
| | - Y. Shimizu
- Department of Neurology, Tokyo Women's Medical University; Tokyo, Japan
| | - K. Ohta
- Department of Health, Faculty of Science, Tokyo University of Science; Tokyo, Japan
| | - M. Iwata
- Department of Neurology, Tokyo Women's Medical University; Tokyo, Japan
| | - S. Uchiyama
- Department of Neurology, Tokyo Women's Medical University; Tokyo, Japan
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Iwata M. ["Kokoro" a view from brain science]. No To Hattatsu 2009; 41:96-99. [PMID: 19517772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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