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Rampam S, Carnino JM, Xiao B, Khan RR, Miyawaki S, Goh GS. Extracellular Vesicles: An Emerging Clinical Opportunity in Musculoskeletal Disease. Tissue Eng Part B Rev 2023. [PMID: 37930727 DOI: 10.1089/ten.teb.2023.0208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Extracellular vesicles (EVs) are important mediators of cell-to-cell communication in the extracellular space. These membranous nanoparticles carry various molecules, often referred to as "cargo," which are delivered to nearby target cells. In the past decade, developments in nanotechnology have allowed for various new laboratory techniques for the increased utilization of EVs in cellular and animal studies. Such techniques have evolved for the isolation, characterization, and delivery of EVs to biological tissues. This emerging technology has immense clinical potential for both diagnostic and therapeutic applications. Various EV cargo molecules, including DNA, RNA, and proteins, can act as pathological biomarkers. Furthermore, EVs derived from certain cell sources have shown therapeutic benefit in certain pathologies. In addition to their native therapeutic benefit, EVs can be engineered to carry and selectively deliver therapeutic agents. While EVs have gained increasing interest in various pathologies, few studies have compiled their clinical potential in musculoskeletal pathologies. To bridge this gap, we present an overview of EVs, introduce current laboratory preparation techniques, and outline the most recent literature regarding the potential therapeutic applications of EVs in musculoskeletal pathologies.
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Affiliation(s)
- Sanjeev Rampam
- Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Jonathan M Carnino
- Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Boyuan Xiao
- Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Rehan R Khan
- Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Steven Miyawaki
- Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Graham S Goh
- Department of Orthopaedic Surgery, Boston University Medical Center, Boston, Massachusetts, USA
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Marshall ADA, Hasdianda MA, Miyawaki S, Jambaulikar GD, Cao C, Chen P, Baugh CW, Zhang H, McCabe J, Steinbach L, King S, Friedman J, Su J, Landman AB, Chai PR. A Pilot of Digital Whiteboards for Improving Patient Satisfaction in the Emergency Department: Nonrandomized Controlled Trial. JMIR Form Res 2023; 7:e44725. [PMID: 36943360 PMCID: PMC10131606 DOI: 10.2196/44725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/27/2023] [Accepted: 02/10/2023] [Indexed: 02/12/2023] Open
Abstract
BACKGROUND Electronic paper (E-paper) screens use electrophoretic ink to provide paper-like low-power displays with advanced networking capabilities that may potentially serve as an alternative to traditional whiteboards and television display screens in hospital settings. E-paper may be leveraged in the emergency department (ED) to facilitate communication. Providing ED patient status updates on E-paper screens could improve patient satisfaction and overall experience and provide more equitable access to their health information. OBJECTIVE We aimed to pilot a patient-facing digital whiteboard using E-paper to display relevant orienting and clinical information in real time to ED patients. We also sought to assess patients' satisfaction after our intervention and understand our patients' overall perception of the impact of the digital whiteboards on their stay. METHODS We deployed a 41-inch E-paper digital whiteboard in 4 rooms in an urban, tertiary care, and academic ED and enrolled 110 patients to understand and evaluate their experience. Participants completed a modified Hospital Consumer Assessment of Health Care Provider and Systems satisfaction questionnaire about their ED stay. We compared responses to a matched control group of patients triaged to ED rooms without digital whiteboards. We designed the digital whiteboard based on iterative feedback from various departmental stakeholders. After establishing IT infrastructure to support the project, we enrolled patients on a convenience basis into a control and an intervention (digital whiteboard) group. Enrollees were given a baseline survey to evaluate their comfort with technology and an exit survey to evaluate their opinions of the digital whiteboard and overall ED satisfaction. Statistical analysis was performed to compare baseline characteristics as well as satisfaction. RESULTS After the successful prototyping and implementation of 4 digital whiteboards, we screened 471 patients for inclusion. We enrolled 110 patients, and 50 patients in each group (control and intervention) completed the study protocol. Age, gender, and racial and ethnic composition were similar between groups. We saw significant increases in satisfaction on postvisit surveys when patients were asked about communication regarding delays (P=.03) and what to do after discharge (P=.02). We found that patients in the intervention group were more likely to recommend the facility to family and friends (P=.04). Additionally, 96% (48/50) stated that they preferred a room with a digital whiteboard, and 70% (35/50) found the intervention "quite a bit" or "extremely" helpful in understanding their ED stay. CONCLUSIONS Digital whiteboards are a feasible and acceptable method of displaying patient-facing data in the ED. Our pilot suggested that E-paper screens coupled with relevant, real-time clinical data and packaged together as a digital whiteboard may positively impact patient satisfaction and the perception of the facility during ED visits. Further study is needed to fully understand the impact on patient satisfaction and experience. TRIAL REGISTRATION ClinicalTrials.gov NCT04497922; https://clinicaltrials.gov/ct2/show/NCT04497922.
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Affiliation(s)
- Andrew D A Marshall
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Mohammad Adrian Hasdianda
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Steven Miyawaki
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | | | - Chenze Cao
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Boston, MA, United States
| | - Paul Chen
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Christopher W Baugh
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Haipeng Zhang
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Boston, MA, United States
- Department of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute, Boston, MA, United States
| | - Jonathan McCabe
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Lee Steinbach
- eVideon Coropration, Grand Rapids, MI, United States
| | - Scott King
- eVideon Coropration, Grand Rapids, MI, United States
| | | | - Jennifer Su
- E Ink Corporation, Billerica, MA, United States
| | - Adam B Landman
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Boston, MA, United States
- Mass General Brigham Digital, Somerville, MA, United States
| | - Peter Ray Chai
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute, Boston, MA, United States
- The Koch Institute for Integrated Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
- The Fenway Institute, Boston, MA, United States
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Keschner YG, Hasdianda MA, Miyawaki S, Baugh CW, Chen PC, Zhang HM, Landman AB, Chai PR. Assessing Patient Experience and Orientation in the Emergency Department with Virtual Windows. Proc Annu Hawaii Int Conf Syst Sci 2022; 2022:3994-3998. [PMID: 35024006 PMCID: PMC8749224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Patients have benefitted from increasingly sophisticated diagnostic and therapeutic innovations over the years. However, the design of the physical hospital environment has garnered less attention. This may negatively impact a patient's experience and health. In areas of the hospital, such as the emergency department (ED), patients may spend hours, or even days, in a windowless environment. Studies have highlighted the importance of natural light and imagery, as they are essential in providing important stimuli to regulate circadian rhythm and orientation, and to mitigate the onset of certain medical conditions. In hospital locations where standard windows may be infeasible, the use of a virtual window may simulate the benefits of an actual window. In this pilot study, we assessed patient experience and orientation with virtual windows in the ED. We demonstrated that virtual windows are an acceptable technology that may improve patient experience and orientation.
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Affiliation(s)
- Yonatan G Keschner
- Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School
| | | | - Steven Miyawaki
- Department of Emergency Medicine, Brigham and Women's Hospital
| | - Christopher W Baugh
- Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School
| | - Paul C Chen
- Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School
| | - Haipeng Mark Zhang
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Dana-Farber Cancer Institute, Harvard Medical School
| | - Adam B Landman
- Brigham Digital Innovation Hub, Department of Emergency Medicine, Brigham and Women's Hospital, Harvard Medical School
| | - Peter R Chai
- Department of Emergency Medicine, Brigham and Women's Hospital, The Fenway Institute, Harvard Medical School
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Jambaulikar GD, Marshall A, Hasdianda MA, Cao C, Chen P, Miyawaki S, Baugh CW, Zhang H, McCabe J, Su J, Landman AB, Chai PR. Electronic Paper Displays in Hospital Operations: Proposal for Deployment and Implementation. JMIR Form Res 2021; 5:e30862. [PMID: 34346904 PMCID: PMC8374667 DOI: 10.2196/30862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/30/2021] [Accepted: 07/06/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Display signage is ubiquitous and essential in hospitals to serve several clerical, operational, and clinical functions, including displaying notices, providing directions, and presenting clinical information. These functions improve efficiency and patient engagement, reduce errors, and enhance the continuity of care. Over time, signage has evolved from analog approaches such as whiteboards and handwritten notices to digital displays such as liquid crystal displays, light emitting diodes, and, now, electronic ink displays. Electronic ink displays are paper-like displays that are not backlit and show content by aligning microencapsulated color beads in response to an applied electric current. Power is only required to generate content and not to retain it. These displays are very readable, with low eye strain; minimize the emission of blue light; require minimal power; and can be driven by several data sources, ranging from virtual servers to electronic health record systems. These attributes make adapting electronic ink displays to hospitals an ideal use case. OBJECTIVE In this paper, we aimed to outline the use of signage and displays in hospitals with a focus on electronic ink displays. We aimed to assess the advantages and limitations of using these displays in hospitals and outline the various public-facing and patient-facing applications of electronic ink displays. Finally, we aimed to discuss the technological considerations and an implementation framework that must be followed when adopting and deploying electronic ink displays. METHODS The public-facing applications of electronic ink displays include signage and way-finders, timetables for shared workspaces, and noticeboards and bulletin boards. The clinical display applications may be smaller form factors such as door signs or bedside cards. The larger, ≥40-inch form factors may be used within patient rooms or at clinical command centers as a digital whiteboard to display general information, patient and clinician information, and care plans. In all these applications, such displays could replace analog whiteboards, noticeboards, and even other digital screens. RESULTS We are conducting pilot research projects to delineate best use cases and practices in adopting electronic ink displays in clinical settings. This will entail liaising with key stakeholders, gathering objective logistical and feasibility data, and, ultimately, quantifying and describing the effect on clinical care and patient satisfaction. CONCLUSIONS There are several use cases in a clinical setting that may lend themselves perfectly to electronic ink display use. The main considerations to be studied in this adoption are network connectivity, content management, privacy and security robustness, and detailed comparison with existing modalities. Electronic ink displays offer a superior opportunity to future-proof existing practices. There is a need for theoretical considerations and real-world testing to determine if the advantages outweigh the limitations of electronic ink displays.
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Affiliation(s)
| | - Andrew Marshall
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
| | - Mohammad Adrian Hasdianda
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
| | - Chenzhe Cao
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Boston, MA, United States
| | - Paul Chen
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
| | - Steven Miyawaki
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Christopher W Baugh
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
| | - Haipeng Zhang
- Brigham Digital Innovation Hub, Brigham and Women's Hospital, Boston, MA, United States
- Department of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute, Boston, MA, United States
| | - Jonathan McCabe
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
| | - Jennifer Su
- E Ink Corporation, Billerica, MA, United States
| | - Adam B Landman
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Mass General Brigham Information Systems, Somerville, MA, United States
| | - Peter Ray Chai
- Department of Emergency Medicine, Brigham and Women's Hospital, Boston, MA, United States
- Department of Emergency Medicine, Harvard Medical School, Boston, MA, United States
- Department of Psychosocial Oncology and Palliative Care, Dana Farber Cancer Institute, Boston, MA, United States
- The Koch Institute for Integrated Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, United States
- The Fenway Institute, Boston, MA, United States
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Miyawaki S, Araki Y, Tanimoto Y, Katayama A, Fujii A, Imai M, Takano-Yamamoto T. Occlusal Force and Condylar Motion in Patients with Anterior Open Bite. J Dent Res 2016; 84:133-7. [PMID: 15668329 DOI: 10.1177/154405910508400205] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Patients with open bite often show a weak occlusal force and temporomandibular disorders (TMDs). If these are the main cause of open bite, it may be hypothesized that both pre-pubertal and adult open-bite patients would show a weak occlusal force and abnormal condylar motion. The purpose of this study was to test this hypothesis. Test group subjects consisted of 13 consecutive pre-pubertal and 13 adult patients with anterior open bite. They were compared with age-matched normal subjects. The adult open-bite group showed a weaker occlusal force and a shorter range of condylar motion compared with the control subjects. In the pre-pubertal subjects, however, there were no significant differences in the occlusal force and range of condylar motion between the open-bite and control groups. Therefore, these results suggest that a weak occlusal force or TMDs may not be the main cause of open bite.
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Affiliation(s)
- S Miyawaki
- Department of Orthodontics and Dentofacial Orthopedics, Okayama University Graduate School of Medicine and Dentistry, 2-5-1, Shikata-cho, Okayama, 700-8525, Japan
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Maeda A, Soejima K, Bandow K, Kuroe K, Kakimoto K, Miyawaki S, Okamoto A, Matsuguchi T. Force-induced IL-8 from Periodontal Ligament Cells Requires IL-1β. J Dent Res 2016; 86:629-34. [PMID: 17586709 DOI: 10.1177/154405910708600709] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
During orthodontic tooth movement, mechanical stresses induce inflammatory reactions in the periodontal ligament (PDL). We hypothesized that chemokines released from PDL cells under mechanical stress regulate osteoclastogenesis, and investigated the profiles and mechanisms of chemokine expression by human PDL cells in response to mechanical stress. In vitro, shear stress and pressure force rapidly increased the gene and protein expressions of IL-8/CXCL8 by PDL cells. Consistently, amounts of IL-8 in the gingival crevicular fluid of healthy individuals increased within 2 to 4 days of orthodontic force application. The PDL cells constitutively expressed low levels of IL-1β, which were not further increased by mechanical stress. Interestingly, neutralization of IL-1β abolished IL-8 induction by mechanical stresses, indicating that IL-1β is essential for IL-8 induction, presumably though autocrine or paracrine mechanisms. Finally, experiments with signal-specific inhibitors indicated that MAP kinase activation is essential for IL-8 induction.
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Affiliation(s)
- A Maeda
- Department of Orthodontics, Field of Developmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Mori T, Nagata Y, Makishima H, Sanada M, Shiozawa Y, Kon A, Yoshizato T, Sato-Otsubo A, Kataoka K, Shiraishi Y, Chiba K, Tanaka H, Ishiyama K, Miyawaki S, Mori H, Nakamaki T, Kihara R, Kiyoi H, Koeffler HP, Shih LY, Miyano S, Naoe T, Haferlach C, Kern W, Haferlach T, Ogawa S, Yoshida K. Somatic PHF6 mutations in 1760 cases with various myeloid neoplasms. Leukemia 2016; 30:2270-2273. [PMID: 27479181 DOI: 10.1038/leu.2016.212] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- T Mori
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Nagata
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Makishima
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - M Sanada
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Shiozawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Kon
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - T Yoshizato
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - A Sato-Otsubo
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Kataoka
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Y Shiraishi
- Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Chiba
- Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - H Tanaka
- Laboratory of Sequence Data Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - K Ishiyama
- Division of Hematology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - S Miyawaki
- Division of Hematology, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - H Mori
- Division of Hematology, Internal Medicine, Showa University Fujigaoka Hospital, Kanagawa, Japan
| | - T Nakamaki
- Division of Hematology, Department of Medicine, Showa University, Kanagawa, Japan
| | - R Kihara
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Kiyoi
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H P Koeffler
- Hematology/Oncology, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,National University of Singapore, Cancer Science Institute of Singapore, Singapore, Singapore
| | - L-Y Shih
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University, Taipei, Taiwan
| | - S Miyano
- Laboratory of DNA Information Analysis, Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,Laboratory of Sequence Data Analysis, Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - T Naoe
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - C Haferlach
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - W Kern
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - T Haferlach
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - S Ogawa
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - K Yoshida
- Department of Pathology and Tumor Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Ohmure H, Kanematsu-Hashimoto K, Nagayama K, Taguchi H, Ido A, Tominaga K, Arakawa T, Miyawaki S. Evaluation of a Proton Pump Inhibitor for Sleep Bruxism. J Dent Res 2016; 95:1479-1486. [DOI: 10.1177/0022034516662245] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Bruxism is a repetitive jaw-muscle activity characterized by clenching or grinding of the teeth and/or bracing or thrusting of the mandible. Recent advances have clarified the relationship between gastroesophageal reflux and sleep bruxism (SB). However, the influence of pharmacological elimination of gastric acid secretion on SB has not been confirmed. The authors aimed to assess the efficacy of a proton pump inhibitor (PPI) on SB and to examine the gastrointestinal (GI) symptoms and endoscopic findings of the upper GI tract in SB patients. The authors performed a randomized double-blind placebo-controlled crossover study at Kagoshima University Hospital. Twelve patients with polysomnography (PSG)–diagnosed SB underwent an assessment of GI symptoms using the frequency scale for the symptoms of gastroesophageal reflux disease (FSSG) and esophagogastroduodenoscopy. At baseline (i.e., before interventions), the mean frequencies of electromyography (EMG) bursts and rhythmic masticatory muscle activity (RMMA) episodes were 65.4 ± 49.0 bursts/h and 7.0 ± 4.8 episodes/h, respectively, and at least 1 RMMA episode with grinding noise was confirmed in all participants. The mean FSSG score was 8.4 ± 5.6, and 41.7% of patients were diagnosed with gastroesophageal reflux disease. Mild reflux esophagitis was confirmed in 6 patients. PSG, including EMG of the left masseter muscle and audio-video recording, was performed on days 4 and 5 of administration of 10 mg of the PPI (rabeprazole) or placebo. PPI administration yielded a significant reduction in the frequency of EMG bursts, RMMA episodes, and grinding noise. No significant differences were observed regarding the swallowing events and sleep variables. Since the clinical application of PPI for SB treatment should remain on hold at present, the results of this trial highlight the potential application of pharmacological gastroesophageal reflux disease treatment for SB patients. Larger scale studies are warranted to corroborate these findings. (UMIN Clinical Trials Registry: UMIN000004577).
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Affiliation(s)
- H. Ohmure
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - K. Kanematsu-Hashimoto
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - K. Nagayama
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - H. Taguchi
- Department of Digestive Disease and Lifestyle related Disease, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - A. Ido
- Department of Digestive Disease and Lifestyle related Disease, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - K. Tominaga
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T. Arakawa
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - S. Miyawaki
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Miyawaki S, Imai H, Hayasaka T, Masaki N, Ono H, Ochi T, Ito A, Nakatomi H, Setou M, Saito N. Imaging mass spectrometry detects dynamic changes of phosphatidylcholine in rat hippocampal CA1 after transient global ischemia. Neuroscience 2016; 322:66-77. [DOI: 10.1016/j.neuroscience.2016.02.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 02/02/2016] [Accepted: 02/02/2016] [Indexed: 11/16/2022]
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Kubota T, Yagi T, Tomonari H, Ikemori T, Miyawaki S. Influence of surgical orthodontic treatment on masticatory function in skeletal Class III patients. J Oral Rehabil 2015; 42:733-41. [PMID: 25975774 DOI: 10.1111/joor.12307] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2015] [Indexed: 11/29/2022]
Abstract
Skeletal Class III patients exhibit malocclusion characterised by Angle Class III and anterior crossbite, and their occlusion shows total or partially lateral crossbite of the posterior teeth. Most patients exhibit lower bite force and muscle activity than non-affected subjects. While orthognathic surgery may help improve masticatory function in these patients, its effects have not been fully elucidated. The aims of the study were to evaluate jaw movement and the electromyographic (EMG) activity of masticatory muscles before and after orthognathic treatment in skeletal Class III patients in comparison with control subjects with normal occlusion. Jaw movement variables and EMG data were recorded in 14 female patients with skeletal Class III malocclusion and 15 female controls with good occlusion. Significant changes in jaw movement, from a chopping to a grinding pattern, were observed after orthognathic treatment (closing angle P < 0.01; cycle width P < 0.01), rendering jaw movement in the patient group similar to that of the control group. However, the grinding pattern in the patient group was not as broad as that of controls. The activity indexes, indicating the relative contributions of the masseter and temporalis muscles (where a negative value corresponds to relatively more temporalis activity and vice versa) changed from negative to positive after treatment (P < 0.05), becoming similar to those of control subjects. Our findings suggest that orthognathic treatment in skeletal Class III patients improves the masticatory chewing pattern and muscle activity. However, the chewing pattern remains incomplete compared with controls.
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Affiliation(s)
- T Kubota
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Yagi
- Department of Orthodontics Dentistry, Medical and Dental Hospital, Kagoshima University, Kagoshima, Japan
| | - H Tomonari
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - T Ikemori
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - S Miyawaki
- Department of Orthodontics and Dentofacial Orthopedics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Miyawaki S, Kohara K, Kido T, Tabara Y, Igase M, Miki T, Sayama K. Facial pigmentation as a biomarker of carotid atherosclerosis in middle-aged to elderly healthy Japanese subjects. Skin Res Technol 2015; 22:20-4. [DOI: 10.1111/srt.12223] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/15/2015] [Indexed: 01/27/2023]
Affiliation(s)
- S. Miyawaki
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
| | - K. Kohara
- Department of Geriatric Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - T. Kido
- Department of Geriatric Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - Y. Tabara
- Center for Genomic Medicine; Kyoto University Graduate School of Medicine; Kyoto Japan
| | - M. Igase
- Department of Geriatric Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - T. Miki
- Department of Geriatric Medicine; Ehime University Graduate School of Medicine; Ehime Japan
| | - K. Sayama
- Department of Dermatology; Ehime University Graduate School of Medicine; Ehime Japan
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Tomonari H, Ikemori T, Kubota T, Uehara S, Miyawaki S. First molar cross-bite is more closely associated with a reverse chewing cycle than anterior or pre-molar cross-bite during mastication. J Oral Rehabil 2014; 41:890-6. [DOI: 10.1111/joor.12222] [Citation(s) in RCA: 11] [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] [Accepted: 07/30/2014] [Indexed: 11/29/2022]
Affiliation(s)
- H. Tomonari
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - T. Ikemori
- Department of Orthodontics; Medical and Dental Hospital, Kagoshima University; Kagoshima Japan
| | - T. Kubota
- Department of Orthodontics; Medical and Dental Hospital, Kagoshima University; Kagoshima Japan
| | - S. Uehara
- Department of Orthodontics; Medical and Dental Hospital, Kagoshima University; Kagoshima Japan
| | - S. Miyawaki
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
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13
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Kishimoto H, Nishiyama S, Yoshinaga Y, Aita T, Ohashi K, Miyawaki S, Miyoshi S, Yoshihara Y, Toda M, Tsuno M. SAT0470 Matrix Metalloproteinase-3 (MMP-3) Correlates with Low Bone Mineral Density (BMD) at the Lumbar Spine, but not at the Femoral Neck in Patients with Systematic Lupus Erythematosus (SLE). Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2923] [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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14
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Nishiyama S, Ohashi K, Aita T, Yoshinaga Y, Miyawaki S. AB0551 Cystatin C Associates with Disease Activity in Patients with Systemic Lupus Erythematosus Independent of Renal Function. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5003] [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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15
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Nishiyama S, Ohashi K, Aita T, Yoshinaga Y, Miyawaki S. AB0552 Correlation between Change in Esspri Items and Change in Essdai Domains. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.5068] [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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16
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Ohmure H, Sakoguchi Y, Nagayama K, Numata M, Tsubouchi H, Miyawaki S. Influence of experimental oesophageal acidification on masseter muscle activity, cervicofacial behaviour and autonomic nervous activity in wakefulness. J Oral Rehabil 2014; 41:423-31. [DOI: 10.1111/joor.12159] [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] [Accepted: 02/22/2014] [Indexed: 12/14/2022]
Affiliation(s)
- H. Ohmure
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - Y. Sakoguchi
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - K. Nagayama
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - M. Numata
- Division of Endoscopy; Kagoshima University Medical and Dental Hospital; Kagoshima Japan
| | | | - S. Miyawaki
- Department of Orthodontics; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
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17
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Tomonari H, Kubota T, Yagi T, Kuninori T, Kitashima F, Uehara S, Miyawaki S. Posterior scissors-bite: masticatory jaw movement and muscle activity. J Oral Rehabil 2014; 41:257-65. [DOI: 10.1111/joor.12148] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2014] [Indexed: 11/29/2022]
Affiliation(s)
- H. Tomonari
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - T. Kubota
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - T. Yagi
- Department of Orthodontics; Medical and Dental Hospital; Kagoshima University; Kagoshima Japan
| | - T. Kuninori
- Department of Orthodontics; Medical and Dental Hospital; Kagoshima University; Kagoshima Japan
| | - F. Kitashima
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - S. Uehara
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - S. Miyawaki
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
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18
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Kuninori T, Tomonari H, Uehara S, Kitashima F, Yagi T, Miyawaki S. Influence of maximum bite force on jaw movement during gummy jelly mastication. J Oral Rehabil 2014; 41:338-45. [DOI: 10.1111/joor.12149] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2014] [Indexed: 11/28/2022]
Affiliation(s)
- T. Kuninori
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - H. Tomonari
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - S. Uehara
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - F. Kitashima
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - T. Yagi
- Department of Orthodontics; Medical and Dental Hospital; Kagoshima University; Kagoshima Japan
| | - S. Miyawaki
- Department of Orthodontics; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
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19
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Nishiyama S, Ohashi K, Aita T, Yoshinaga Y, Miyawaki S, Nishino J, Tohma S. AB0195 To develop a regression model for predicting damage-related haq: a nationwide study based on the ninja (national database of rheumatic diseases by ir-net in japan) 2011. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.2518] [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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Abstract
Abstract A 39-year-old woman with systemic lupus erythematosus (SLE) developed severe acute pancreatitis during a well-controlled disease stage. Treatment with intraarterial injections of antipancreatic enzyme and a small amount of prednisone (20 mg/day) led to remission of the pancreatitis. Disease activity of the SLE did not flare up throughout the course of this treatment. The development of severe acute pancreatitis in SLE is rare. We discuss the cause of pancreatitis in SLE, and whether corticosteroids may induce or improve pancreatitis.
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Affiliation(s)
- S Nishiyama
- Rheumatic Disease Center, Medical Center Kurashiki , 250 Bakuro-cho, Kurashiki 710-0824 , Japan
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21
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Nishiyama S, Ohashi K, Aita T, Yoshinaga Y, Miyawaki S, Tohma S. AB0435 Clinical features of ra patients with or without remission states of ACR/EULAR and modified health assessment questionnaire (MHAQ):. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.435] [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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Nishiyama S, Ohashi K, Aita T, Yoshinaga Y, Miyawaki S, Tohma S. SAT0115 Upper/small joints are emphasized in new ACR/EULAR remission criteria, while physicians have respect for large joints: A nationwide study based on the ninja (national database of rheumatic diseases by IR-net in japan) 2010:. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.3062] [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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23
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Doki N, Miyawaki S, Tanaka M, Kudo D, Wake A, Oshima K, Fujita H, Uehara T, Hyo R, Mori T, Takahashi S, Okamoto S, Sakamaki H. Visceral varicella zoster virus infection after allogeneic stem cell transplantation. Transpl Infect Dis 2013; 15:314-8. [DOI: 10.1111/tid.12073] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Revised: 10/02/2012] [Accepted: 11/24/2012] [Indexed: 01/08/2023]
Affiliation(s)
| | | | - M. Tanaka
- Department of Hematology; Kanagawa Cancer Center; Yokohama; Japan
| | - D. Kudo
- Hematology Division; Tokyo Metropolitan Cancer and Infectious Diseases Center; Komagome Hospital; Tokyo; Japan
| | - A. Wake
- Department of Hematology; Toranomon Hospital; Tokyo; Japan
| | - K. Oshima
- Division of Hematology; Saitama Medical Center; Jichi Medical University; Omiya; Japan
| | - H. Fujita
- Division of Hematology; Shizuoka Red Cross Hospital; Shizuoka; Japan
| | - T. Uehara
- Department of Internal Medicine; Chiba Aoba Municipal Hospital; Chiba; Japan
| | - R. Hyo
- Department of Hematology; Yokohama City University Medical Center; Yokohama; Japan
| | - T. Mori
- Division of Hematology; Department of Medicine; Keio University School of Medicine; Tokyo; Japan
| | - S. Takahashi
- Department of Hematology and Oncology; Institute of Medical Science; University of Tokyo; Tokyo; Japan
| | - S. Okamoto
- Division of Hematology; Department of Medicine; Keio University School of Medicine; Tokyo; Japan
| | - H. Sakamaki
- Hematology Division; Tokyo Metropolitan Cancer and Infectious Diseases Center; Komagome Hospital; Tokyo; Japan
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24
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Kako S, Morita S, Sakamaki H, Iida H, Kurokawa M, Miyamura K, Kanamori H, Hara M, Kobayashi N, Morishima Y, Kawa K, Kyo T, Sakura T, Jinnai I, Takeuchi J, Miyazaki Y, Miyawaki S, Ohnishi K, Naoe T, Kanda Y. The role of HLA-matched unrelated transplantation in adult patients with Ph chromosome-negative ALL in first remission. A decision analysis. Bone Marrow Transplant 2013; 48:1077-83. [DOI: 10.1038/bmt.2013.4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 11/10/2022]
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25
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Mazda Y, Kawada-Matsuo M, Kanbara K, Oogai Y, Shibata Y, Yamashita Y, Miyawaki S, Komatsuzawa H. Association of CiaRH with resistance of Streptococcus mutans to antimicrobial peptides in biofilms. Mol Oral Microbiol 2012; 27:124-35. [DOI: 10.1111/j.2041-1014.2012.00637.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [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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26
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Ohmure H, Takada H, Nagayama K, Sakiyama T, Tsubouchi H, Miyawaki S. Mastication Suppresses Initial Gastric Emptying by Modulating Gastric Activity. J Dent Res 2011; 91:293-8. [DOI: 10.1177/0022034511433847] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Because various mastication-related factors influence gastric activity, the functional relationship between mastication and gastric function has not been fully elucidated. To investigate the influence of mastication on gastric emptying and motility, we conducted a randomized trial to compare the effects of mastication on gastric emptying and gastric myoelectrical activity under conditions that excluded the influences of food comminution, taste, and olfaction. A 13C-acetate breath test with electrogastrography and electrocardiography was performed in 14 healthy men who ingested a test meal with or without chewing gum. Autonomic nerve activity was evaluated by fluctuation analysis of heart rate. Gastric emptying was significantly delayed in the ‘ingestion with mastication’ group. Gastric myoelectrical activity was significantly suppressed during mastication and increased gradually in the post-mastication phase. A decrease in the high-frequency power of heart rate variability was observed coincidentally with gastric myoelectrical activity suppression. These findings suggest that initial gastric emptying is suppressed by mastication, and that the suppression is caused by mastication-induced inhibition of gastric activity (UMIN Clinical Trial Registration no. UMIN000005351).
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Affiliation(s)
- H. Ohmure
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - H. Takada
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - K. Nagayama
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
| | - T. Sakiyama
- Kagoshima University Medical and Dental Hospital, Division of Endoscopy, Kagoshima, Japan
| | - H. Tsubouchi
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Digestive Disease and Lifestyle related Disease, Kagoshima, Japan
| | - S. Miyawaki
- Kagoshima University Graduate School of Medical and Dental Sciences, Department of Orthodontics, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
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27
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Ohmure H, Miyawaki S. Response to Letter to the Editor, “Influence of Experimental Acidification on Sleep Bruxism: A Randomized Trial”. J Dent Res 2011. [DOI: 10.1177/0022034511416670] [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] Open
Affiliation(s)
- H. Ohmure
- Kagoshima University Graduate School of Medical and Dental Sciences, Japan
| | - S. Miyawaki
- Kagoshima University Graduate School of Medical and Dental Sciences, Japan
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28
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Usui N, Mitani K, Maeda T, Sakura T, Dobashi N, Yagasaki F, Obata K, Mitsubashi M, Miyawaki S. Chemotherapeutic drugs–induced apoptosis-related mRNAs in whole blood ex vivo as a new diagnostic markers for the prediction of clinical outcome of AML. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.6627] [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: 11/20/2022] Open
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29
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Ohmure H, Oikawa K, Kanematsu K, Saito Y, Yamamoto T, Nagahama H, Tsubouchi H, Miyawaki S. Influence of experimental esophageal acidification on sleep bruxism: a randomized trial. J Dent Res 2011; 90:665-71. [PMID: 21248360 DOI: 10.1177/0022034510393516] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
UNLABELLED The aim of this cross-over, randomized, single-blinded trial was to examine whether intra-esophageal acidification induces sleep bruxism (SB). Polysomnography with electromyogram (EMG) of masseter muscle, audio-video recording, and esophageal pH monitoring were performed in a sleep laboratory. Twelve healthy adult males without SB participated. Intra-esophageal infusions of 5-mL acidic solution (0.1 N HCl) or saline were administered. The frequencies of EMG bursts, rhythmic masticatory muscle activity (RMMA) episodes, grinding noise, and the RMMA/microarousal ratio were significantly higher in the 20-minute period after acidic infusion than after saline infusion. RMMA episodes including SB were induced by esophageal acidification. This trial is registered with the UMIN Clinical Trials Registry, UMIN000002923. ABBREVIATIONS ASDA, American Sleep Disorders Association; EMG, electromyogram; GER, gastroesophageal reflux; LES, lower esophageal sphincter; NREM, non-rapid eye movement; REM, rapid eye movement; RMMA, rhythmic masticatory muscle activity; SB, sleep bruxism; SD, standard deviation; UES, upper esophageal sphincter.
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Affiliation(s)
- H Ohmure
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1, Sakuragaoka, Kagoshima 890-8544, Japan
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Kako S, Morita S, Sakamaki H, Ogawa H, Fukuda T, Takahashi S, Kanamori H, Onizuka M, Iwato K, Suzuki R, Atsuta Y, Kyo T, Sakura T, Jinnai I, Takeuchi J, Miyazaki Y, Miyawaki S, Ohnishi K, Naoe T, Kanda Y. A decision analysis of allogeneic hematopoietic stem cell transplantation in adult patients with Philadelphia chromosome-negative acute lymphoblastic leukemia in first remission who have an HLA-matched sibling donor. Leukemia 2010; 25:259-65. [DOI: 10.1038/leu.2010.260] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Koyama I, Iino S, Abe Y, Takano-Yamamoto T, Miyawaki S. Differences between sliding mechanics with implant anchorage and straight-pull headgear and intermaxillary elastics in adults with bimaxillary protrusion. Eur J Orthod 2010; 33:126-31. [DOI: 10.1093/ejo/cjq047] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [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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32
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Matsuno A, Miyawaki S, Yamada S, Ide F, Yamada SM, Nakaguchi H, Hoya K, Murakami M, Takeuchi M, Sugaya M. A rare association of ruptured left middle cerebral artery aneurysm and dextrocardia with situs inversus totalis. Ir J Med Sci 2010; 180:623-4. [PMID: 20865343 DOI: 10.1007/s11845-010-0590-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2007] [Accepted: 09/15/2010] [Indexed: 11/26/2022]
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33
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Hoshino T, Sakura T, Miyawaki K, Hatsumi N, Takada S, Maruya E, Saji H, Miyawaki S. Successful engraftment of a second transplant from unrelated cord blood identifying acceptable HLA Ag mismatches as treatment for primary graft failure possibly mediated by anti-HLA Abs after 'mega-dose' haploidentical PBSC transplantation. Bone Marrow Transplant 2010; 45:1665-7. [PMID: 20190841 DOI: 10.1038/bmt.2010.30] [Citation(s) in RCA: 4] [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: 11/09/2022]
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34
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Matsuno A, Ide F, Tanaka H, Asano S, Miyawaki S, Uno T, Tanaka J, Nakaguchi H, Sasaki M, Murakami M, Fuke N. Oral administration of cilnidipine to patients with hypertensive intracerebral hemorrhage in the acute stage: significance and role of an N-type calcium channel blocker. Ir J Med Sci 2008; 178:419-22. [PMID: 18841437 DOI: 10.1007/s11845-008-0224-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2007] [Accepted: 09/10/2008] [Indexed: 11/29/2022]
Abstract
BACKGROUND Elevated blood pressure (BP) causes rebleeding or enlargement of intracerebral hematomas. AIMS How a long-acting oral calcium channel blocker, cilnidipine, could control BP in the acute stage of cerebral hemorrhage was evaluated. METHODS AND RESULTS Cilnidipine given within 3 days of hospitalization has more benefit than cilnidipine given after 4 days of hospitalization; it can reduce the amount of intravenous nicardipine, and it can help to maintain the BP below 80% of the initial BP. Surgical removal of the hematoma has no benefit in reducing the amount of intravenous nicardipine and maintaining the BP below 80% of the initial BP. CONCLUSION In order to reduce the total amount of intravenous nicardipine and to maintain the BP below 80% of the initial BP, oral administration of a long-acting N-type calcium channel blocker, cilnidipine, is useful and important, independent of whether the hematomas are surgically removed.
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Affiliation(s)
- A Matsuno
- Department of Neurosurgery, Teikyo University Chiba Medical Center, Anesaki, Ichihara, Chiba, Japan.
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Abstract
There are several reports suggesting that forward head posture is associated with temporomandibular disorders and restraint of mandibular growth, possibly due to mandibular displacement posteriorly. However, there have been few reports in which the condylar position was examined in forward head posture. The purpose of this study was to test the hypothesis that the condyle moves posteriorly in the forward head posture. The condylar position and electromyography from the masseter, temporal and digastric muscles were recorded on 15 healthy male adults at mandibular rest position in the natural head posture and deliberate forward head posture. The condylar position in the deliberate forward head posture was significantly more posterior than that in the natural head posture. The activity of the masseter and digastric muscles in the deliberate forward head posture was slightly increased. These results suggest that the condyle moves posteriorly in subjects with forward head posture.
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Affiliation(s)
- H Ohmure
- Department of Orthodontics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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36
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Toshiro M, Kawakami T, Baba M, Miyawaki S, Kirita T. P.447 Stress analysis of the TMJ during jaw opening by 3-D FEM. J Craniomaxillofac Surg 2008. [DOI: 10.1016/s1010-5182(08)72235-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Matsuno A, Tanaka H, Iwamuro H, Takanashi S, Miyawaki S, Nakashima M, Nakaguchi H, Nagashima T. Analyses of the factors influencing bone graft infection after delayed cranioplasty. Acta Neurochir (Wien) 2006; 148:535-40; discussion 540. [PMID: 16467959 DOI: 10.1007/s00701-006-0740-6] [Citation(s) in RCA: 219] [Impact Index Per Article: 12.2] [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: 06/26/2005] [Accepted: 12/14/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Several factors influencing bone graft infection after delayed cranioplasty are analyzed in order to reduce the occurrence of infection. METHODS For about 10 years, from March 1995 to February 2005, delayed cranioplasty was performed for 206 cases. The cases comprised 124 males and 82 females. Age distribution of the patients ranged from 6 months to 79 years old. The mean postoperative follow-up period was 1834 days. Autogenous bone, which was preserved in 100% ethanol at -20 degrees C and autoclaved before operation, was used in 54 patients. Polymethylmethacrylate (PMMA) was used in 55 patients. Custom-made PMMA was used in 3 patients. Custom-made titanium mesh was used in 77 patients. Custom-made ceramics (Alumina-ceramics 10 cases and hydroxyapatite 7 cases) was used in 17 patients. FINDINGS Autoclaved and autogenous bone graft and PMMA have a significantly high rate of graft infection. Titanium mesh has the significantly lowest rate of graft infection. Alumina-ceramic has a merit that it has sufficient strength, however the number of cases using custom-made ceramics including alumina-ceramic was relatively small, and thus we cannot find significant differences in infection rate compared with that of other materials. There was no statistically significant difference in the bone graft infection rate among four categories of preceding diseases; cerebrovascular diseases, head trauma, infectious diseases, and brain tumour. CONCLUSION Autoclaved and autogenous bone grafts and PMMA have a significantly higher rate of graft infection. Titanium mesh has the significantly lowest rate of graft infection.
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Affiliation(s)
- A Matsuno
- Department of Neurosurgery, Teikyo University Ichihara Hospital, Anesaki, Ichihara City, Chiba, Japan.
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Abstract
Humans with normal occlusion usually perform gum-chewing movements in a characteristic manner. The purpose of present study was to examine whether the variability of masticatory jaw movement in children with incisor crossbite is greater than that in children with normal occlusions, and if so, to examine whether correction of the crossbite results in a significant reduction in the variability. The variance in masticatory jaw movement trajectory was investigated in 10 children with acceptable occlusion and 11 children with crossbite of one or two incisors. The lower incisor-point movements during chewing of standardized gum were monitored using a 3D tracking device. The deviation of the jaw-closing trajectory from a best-fit plane was then evaluated for each chewing cycle. Subsequently, variance in angles of the best-fit planes and variance in the instantaneous curvature of the jaw-closing trajectories were evaluated. Pitch angles of the best-fit planes and curvature of the trajectories during closing in patients were more variable than those in control subjects (P < 0.05). After treatment, the variances decreased significantly (P < 0.05). These findings suggest that the achievement of good occlusion is associated with a reduction of variability of jaw movements in a gum-chewing task.
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Affiliation(s)
- K Yashiro
- Department of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Osaka University, Suita, Osaka, Japan.
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39
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Kataoka I, Kami M, Takahashi S, Kodera Y, Miyawaki S, Hirabayashi N, Okamoto S, Matsumoto N, Miyazaki Y, Morishita Y, Asai O, Maruta A, Yoshida T, Imamura M, Hamajima N, Matsuo K, Harada M, Mineishi S. Clinical impact of graft-versus-host disease against leukemias not in remission at the time of allogeneic hematopoietic stem cell transplantation from related donors. The Japan Society for Hematopoietic Cell Transplantation Working Party. Bone Marrow Transplant 2004; 34:711-9. [PMID: 15361916 DOI: 10.1038/sj.bmt.1704659] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Acute graft-versus-host disease (GVHD) increases post-transplant mortality and morbidity, but exerts a potent graft-versus-leukemia (GVL) effect. To clarify the impact of GVHD on outcome after transplant in aggressive diseases, patients with acute myeloid or lymphoblastic leukemia (AML, n = 366 or ALL, n = 255) in nonremission states, or chronic myelogenous leukemia (CML, n = 180) in accelerated phase (AP) or blastic crisis (BC), who received allogeneic hematopoietic stem cell transplantation (HSCT) from a related donor between 1991 and 2000, were analyzed. Significant improvement in overall and disease-free survival (DFS) was detected with grade I acute GVHD in AML (P = 0.0002 for overall survival and 0.0009 for DFS, respectively) and in CML (P = 0.0256 and 0.0366, respectively), while the trend towards improved survival was observed in ALL. Relapse rate was lower in grade I acute GVHD than in grade II in all three diseases, suggesting that treatment for grade II GVHD may compromise the GVL effect associated with GVHD. Chronic GVHD was found to suppress relapse in CML and ALL, but not in AML, although no improvement in survival was observed in any disease category. Our results suggest that treatment for grade II acute GVHD may need to be attenuated in transplant for refractory leukemias.
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Affiliation(s)
- I Kataoka
- Hematopoietic Stem Cell Transplant Unit, National Cancer Center Hospital, Tsukiji, Chuo-ku, Tokyo, Japan
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40
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Nakajima H, Oki M, Kishi K, Ueyama JI, Miyakoshi S, Hatsumi N, Sakura T, Miyawaki S, Yokota A, Fujisawa S, Mori S, Tanaka Y, Sakamaki H. Nonmyeloablative stem cell transplantation with fludarabine and cyclophosphamide for patients with hematologic malignancies. ACTA ACUST UNITED AC 2003; 25:383-91. [PMID: 14641143 DOI: 10.1046/j.0141-9854.2003.00550.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We conducted a multi-center phase I/II trial of nonmyeloablative stem cell transplantation for patients with hematologic malignancies. The aim of this trial was to assess the safety and feasibility of this treatment modality for older or younger patients with significant organ dysfunction, who could not be treated with conventional high dose chemoradiotherapy. Twelve patients were treated with a conditioning regimen consisting of fludarabine and cyclophosphamide, followed by peripheral blood stem cell transplantation from human leukocyte antigen (HLA) identical siblings. Nonhematologic toxicities were mild. Median time to absolute neutrophils above 0.5 x 10(9)/l, 1.0 x 10(9)/l and platelets above 50 x 10(9)/l were 8, 10 and 12 days, respectively. Donor dominant hematopoiesis was achieved in all patients, with or without donor leukocyte infusion. The cumulative incidence of acute and chronic graft-versus-host disease (GVHD) was 75 and 56%, respectively. Only one patient experienced early death within 100 days, caused by acute GVHD complicated by fungal infection. All patients except one achieved complete remission. With a median follow-up of 330 days, expected progression-free survival is 75%. Overall survival is 76%. Our study confirms that nonmyeloablative stem cell transplantation with cyclophosphamide and fludarabine conditioning is a safe and promising treatment for elderly patients with hematologic malignancies. A further study in large-scale setting is warranted.
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Affiliation(s)
- H Nakajima
- Division of Hematology/Medical Oncology, Tokai University School of Medicine, Boseidai, Isehara, Japan
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41
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Matsuo T, Kuriyama K, Miyazaki Y, Yoshida S, Tomonaga M, Emi N, Kobayashi T, Miyawaki S, Matsushima T, Shinagawa K, Honda S, Ohno R. The percentage of myeloperoxidase-positive blast cells is a strong independent prognostic factor in acute myeloid leukemia, even in the patients with normal karyotype. Leukemia 2003; 17:1538-43. [PMID: 12886240 DOI: 10.1038/sj.leu.2403010] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To examine whether the percentage of myeloperoxidase (MPO)-positive blast cells is useful as a prognostic factor for acute myeloid leukemia (AML), cytochemical analysis of MPO was performed in 491 patients who were registered to the Japan Adult Leukemia Study Group-AML92 study. Patients were divided into two using the percentage of MPO-positive blast (high [>or=50%] and low (<50%)). Complete remission rates were 85.4% in the former and 64.1% in the latter (P=0.001). The overall survival (OS) and the disease-free survival (DFS) were significantly better in the high MPO group (48.3 vs 18.7% for OS, and 36.3 vs 20.1% for DFS, P<0.001, respectively). Multivariate analysis showed that both karyotype and the percentage of MPO-positive blast cells were equally important prognostic factors. The high MPO group still showed a better survival even when restricted to the intermediate chromosomal risk group or the patients with normal karyotype (P<0.001). The OS of patients with normal karyotype in the high MPO group was almost equal with that of the favorable chromosomal risk group. The percentage of MPO-positive blast cells is a simple and highly significant prognostic factor for AML patients, and especially useful to stratify patients with normal karyotype.
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Affiliation(s)
- T Matsuo
- Blood Transfusion Service, Department of Hematology and Molecular Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University School of Medicine, Sakamoto Nagasaki, Japan
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42
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Miyawaki S. [How to be diagnostic criteria for the classification of rheumatic diseases]. Ryumachi 2002; 42:651-3. [PMID: 12355859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
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43
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Takeuchi J, Kyo T, Naito K, Sao H, Takahashi M, Miyawaki S, Kuriyama K, Ohtake S, Yagasaki F, Murakami H, Asou N, Ino T, Okamoto T, Usui N, Nishimura M, Shinagawa K, Fukushima T, Taguchi H, Morii T, Mizuta S, Akiyama H, Nakamura Y, Ohshima T, Ohno R. Induction therapy by frequent administration of doxorubicin with four other drugs, followed by intensive consolidation and maintenance therapy for adult acute lymphoblastic leukemia: the JALSG-ALL93 study. Leukemia 2002; 16:1259-66. [PMID: 12094249 DOI: 10.1038/sj.leu.2402526] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.0] [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: 06/28/2001] [Accepted: 02/20/2002] [Indexed: 11/09/2022]
Abstract
In order to improve the disappointing prognosis of adult patients with acute lymphoblastic leukemia (ALL), we applied similar induction therapy as that used for acute myeloid leukemia (AML), ie frequent administration of doxorubicin (DOX). DOX 30 mg/m(2) was administered from days 1 to 3 and from days 8 to 10 together with vincristine, prednisolone, cyclophosphamide and L-asparaginase, followed by three courses of consolidation and four courses of intensification. From December 1993 to February 1997, 285 untreated adult patients with de novo ALL were entered. Of 263 evaluable patients (age 15 to 59; median 31), 205 (78%) obtained complete remission (CR). At a median follow-up period of 63 months, the predicted 6-year overall survival (OS) rate of all patients was 33%, and disease-free survival (DFS) rate of CR patients was 30%, respectively. By multivariate analysis, favorable prognostic factors for the achievement of CR were age <40 and WBC <50 000/microl; for longer OS were age <30 and WBC <30 000/microl; and for longer DFS of CR patients were FAB L1 and ALT <50 IU/l. Among 229 patients who had adequate cytogenetic data, 51 (22%) had Philadelphia (Ph) chromosome. Ph-negative chromosome was a common favorable prognostic factor for CR, longer OS and DFS. DFS was not different between early sequential intensification (n = 48) and intermittent intensification (n = 43) during the maintenance phase. Among CR patients under 40 years old, the 6-year survival was not different between the allocated related allo-BMT group (34 patients) and the allocated chemotherapy group (108 patients). However, among patients with Ph-positive ALL, the survival of patients who actually received allo-BMT was superior to that of patients who received chemotherapy (P = 0.046).
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Affiliation(s)
- J Takeuchi
- First Department of Internal Medicine, Nihon University School of Medicine, Japan
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44
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Kirita T, Ohgi K, Kawakami M, Miyawaki S, Okamoto M, Yamanaka Y, Sugimura M. Primary tumour resection of tongue carcinoma based on response to preoperative therapy. Int J Oral Maxillofac Surg 2002; 31:267-72. [PMID: 12190132 DOI: 10.1054/ijom.2002.0241] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The purpose of this study was to investigate the selection of resection techniques for primary lesions of advanced tongue carcinoma based on the effectiveness of our current preoperative therapy. Forty-three patients with advanced but potentially resectable squamous cell carcinoma of the tongue were included in this study. All patients were treated with preoperative concurrent chemoradiotherapy followed by conventional surgical resection. Semiserial sections of whole surgical specimen of primary lesion were evaluated histopathologically. In patients who achieved 85% and above regression, the extent of residual tumours two-dimensionally and in the deep layers was lesser, and the rate of tumour cell survival was lower, than in other patients. Furthermore, residual tumours tended to be localized to the superficial layers in the centre. These findings suggest that even in advanced tongue carcinomas it is possible to avoid extended resection and perform a less invasive surgery in which the extent of resection is reduced to preserve morphology and function in patients who achieved 65% and above regression following preoperative chemoradiotherapy.
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Affiliation(s)
- T Kirita
- Department of Oral and Maxillofacial Surgery, Nara Medical University, Nara-Kashihara, Japan.
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45
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Katsuma S, Shiojima S, Hirasawa A, Suzuki Y, Takagaki K, Murai M, Kaminishi Y, Hada Y, Koba M, Muso E, Miyawaki S, Ohgi T, Yano J, Tsujimoto G. Genomic analysis of a mouse model of immunoglobulin A nephropathy reveals an enhanced PDGF-EDG5 cascade. Pharmacogenomics J 2002; 1:211-7. [PMID: 11908758 DOI: 10.1038/sj.tpj.6500043] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The molecular mechanism of immunoglobulin A nephropathy (IgAN), the most common primary renal glomerular disease worldwide, is unknown. HIGA (high serum IgA) mouse is a valid model of IgAN showing almost all of the pathological features, including mesangial cell proliferation. Here we elucidate a pattern of gene expression associated with IgAN by analyzing the diseased kidneys on cDNA microarrays. In particular, we showed an enhanced expression of several genes regulating the cell cycle and proliferation, including growth factors and their receptors, as well as endothelial differentiation gene-5 (EDG5), a receptor for sphingosine 1-phosphate (SPP). One of the growth factors, platelet-derived growth factor (PDGF) induces a marked upregulation of EDG5 in proliferative mesangial cells, and promotes cell proliferation synergistically with SPP. The genomic approach allows us to identify families of genes involved in a process, and can indicate that enhanced PDGF-EDG5 signaling plays an important role in the progression of IgAN.
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MESH Headings
- Animals
- Cells, Cultured
- Disease Models, Animal
- Female
- Glomerular Mesangium/cytology
- Glomerular Mesangium/metabolism
- Glomerulonephritis, IGA/genetics
- Glomerulonephritis, IGA/metabolism
- Glomerulonephritis, IGA/pathology
- Male
- Mice
- Mice, Mutant Strains
- Oligonucleotide Array Sequence Analysis/methods
- Oligonucleotide Array Sequence Analysis/statistics & numerical data
- Platelet-Derived Growth Factor/biosynthesis
- Platelet-Derived Growth Factor/genetics
- Rats
- Receptors, Cell Surface/biosynthesis
- Receptors, Cell Surface/genetics
- Receptors, G-Protein-Coupled
- Receptors, Lysophospholipid
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Affiliation(s)
- S Katsuma
- Department of Molecular, Cell Pharmacology, National Children's Medical Research Center, Tokyo, Japan
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46
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Naoe T, Tagawa Y, Kiyoi H, Kodera Y, Miyawaki S, Asou N, Kuriyama K, Kusumoto S, Shimazaki C, Saito K, Akiyama H, Motoji T, Nishimura M, Shinagawa K, Ueda R, Saito H, Ohno R. Prognostic significance of the null genotype of glutathione S-transferase-T1 in patients with acute myeloid leukemia: increased early death after chemotherapy. Leukemia 2002; 16:203-8. [PMID: 11840286 DOI: 10.1038/sj.leu.2402361] [Citation(s) in RCA: 50] [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] [Subscribe] [Scholar Register] [Received: 06/27/2001] [Accepted: 10/12/2001] [Indexed: 11/08/2022]
Abstract
We investigated the prognostic significance of genetic polymorphism in glutathione-S transferase mu 1 (GSTM1), glutathione-S transferase theta 1 (GSTT1), NAD(P)H:quinone oxidoreductase (NQO1) and myeloperoxidase (MPO), the products of which are associated with drug metabolism as well as with detoxication, in 193 patients with de novo acute myeloid leukemia (AML) other than M3. Of the patients, 64.2% were either homozygous or heterozygous for GSTT1 (GSTT1(+)), while 35.8% showed homozygous deletions of GSTT1 (GSTT1(-)). The GSTT1(-) group had a worse prognosis than the GSTT1(+) group (P = 0.04), whereas other genotypes did not affect the outcome. Multivariate analysis revealed that GSTT1(-) was an independent prognostic factor for overall survival (relative risk: 1.53; P = 0.026) but not for disease-free survival of 140 patients who achieved complete remission (CR). The rate of early death after the initiation of chemotherapy was higher in the GSTT1(-) group than the GSTT1(+) group (within 45 days after initial chemotherapy, P = 0.073; within 120 days, P = 0.028), whereas CR rates and relapse frequencies were similar. The null genotype of GSTT1 might be associated with increased toxicity after chemotherapy.
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Affiliation(s)
- T Naoe
- Department of Infectious Diseases, Nagoya University School of Medicine, Nagoya, Japan
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47
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Kusano H, Miyawaki S, Yoshida H, Ono T, Muso E, Sasayama S. Heminephrectomy causes the progression of glomerulosclerosis and apoptosis in high IgA strain of ddY (HIGA) mice. Nephrology (Carlton) 2001. [DOI: 10.1046/j.1440-1797.2001.00002.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: 11/20/2022]
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48
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Matsushima T, Saitoh T, Karasawa M, Takizawa M, Miyawaki S, Nojima Y, Murakami H. Effect of cytokines on growth and differentiation of leukaemic cells with translocation t(6;9)(p23;q34). Br J Haematol 2001; 115:812-6. [PMID: 11843814 DOI: 10.1046/j.1365-2141.2001.03224.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The translocation t(6;9)(p23;q34) is detected infrequently in subtypes of haematological malignancies including acute myelogenous leukaemia (AML) and myelodysplastic syndrome (MDS). Although the t(6;9) leukaemia is commonly associated with bone marrow basophilia, the cytological characteristics of leukaemic cells are unclear. In the current study, we examined the in vitro effects of several cytokines on growth and differentiation of t(6;9) leukaemic cells. Isolated bone marrow mononuclear cells from four patients with t(6;9) (two MDS and two AML) were cultured for 14 d in the presence or absence of each cytokine. At the end of culture, viable cells were counted, and their histology was examined. Bone marrow cells obtained from 22 patients (10 AML, six AML from MDS, six MDS) lacking t(6;9) were used as controls. Compared with control cultures, significantly higher numbers of blasts appeared in the culture of bone marrow cells from t(6;9)-positive patients in response to stimulation with granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage CSF (GM-CSF) or interleukin 3 (IL-3). Stem cell factor (SCF) had little effect. Neutrophil counts were also significantly increased in the presence of G-CSF or IL-3. SCF and IL-3 were potent in increasing basophil counts from t(6;9)-positive cultures. These findings suggest that bone marrow cells obtained from t(6;9) patients are highly sensitive to growth- and/or differentiation-promoting cytokines. Special attention should be paid to the use of "therapeutic" cytokines in these patients.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Analysis of Variance
- Bone Marrow Cells/drug effects
- Bone Marrow Cells/pathology
- Case-Control Studies
- Cell Differentiation/drug effects
- Cell Division/drug effects
- Cells, Cultured
- Chromosomes, Human, Pair 6
- Chromosomes, Human, Pair 9
- Cytokines/pharmacology
- Female
- Granulocyte Colony-Stimulating Factor/pharmacology
- Humans
- Interleukin-3/pharmacology
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/immunology
- Male
- Middle Aged
- Myelodysplastic Syndromes/genetics
- Myelodysplastic Syndromes/immunology
- Stem Cell Factor/pharmacology
- Translocation, Genetic
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Affiliation(s)
- T Matsushima
- Third Department of Internal Medicine, Gunma University School of Medicine, Shouwa-machi 3-39-15, Maebashi, Gunma 371-0034, Japan.
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49
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Oyama A, Muso E, Ono T, Matsushima H, Yashiro M, Suyama K, Kamata T, Nogaki F, Kobayashi I, Miyawaki S, Yoshida H, Sasayama S. Up-regulated TGF-beta mRNA expression in splenic T cells of high IgA-prone mice: a murine model of IgA nephropathy with glomerulosclerosis. Nephron Clin Pract 2001; 88:368-75. [PMID: 11474233 DOI: 10.1159/000046022] [Citation(s) in RCA: 4] [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] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Recently, we established a high serum IgA-prone inbred (HIGA) mouse strain as a murine model of spontaneous IgA nephropathy by selective mating of high serum IgA ddY mice, and found that they showed enhanced production of glomerular extracellular matrix components with increased expression of TGF-beta mRNA and protein in the kidneys. In this study, we examined the roles of lymphocytes in the development of high serum IgA in this strain. METHODS We performed flow cytometric analyses of T and B cells in splenic mononuclear cells (SMNCs) from these mice using BALB/c mice as normal controls. We also compared serum TGF-beta1 concentrations and TGF-beta mRNA expression levels in the B-cell-depleted (T-cell-rich) fraction of SMNCs in these mice. RESULTS HIGA mice showed significantly fewer CD3-positive cells compared with BALB/c mice when young, but not when aged. The CD4/CD8 ratio of HIGA mice was lower than that of BALB/c mice, but this difference was not significant. Although the number of B220-positive cells did not vary significantly, the ratio of surface IgA-positive B cells was significantly increased in both young and adult HIGA mice. The B-cell-depleted SMNCs from HIGA mice exhibited higher levels of expression of TGF-beta and TGF-beta1 mRNA than controls from a young age, which were maintained throughout life, but there were no differences in PDGF, MCP-1 or bFGF expression between these two strains. In contrast to local mRNA expression, serum TGF-beta1 concentration was decreased in HIGA mice compared with BALB/c controls. CONCLUSION These findings suggest that the mating procedure performed to establish HIGA mice selected for a unique phenotype of local up-regulation of TGF-beta production in the kidneys, as well as T cells that may contribute to both the early and consistently high serum IgA expression and enhanced production of renal extracellular matrix components in HIGA mice. Additionally, TGF-beta1 may act locally, not systemically, in a paracrine or autocrine manner.
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Affiliation(s)
- A Oyama
- Department of Cardiovascular Medicine, Kyoto University, Graduate School of Medicine, Kyoto, Japan
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50
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Asou N, Adachi K, Tamura U, Kanamaru A, Kageyama S, Hiraoka A, Omoto E, Akiyama H, Tsubaki K, Saito K, Kuriyama K, Oh H, Kitano K, Miyawaki S, Takeyama U, Yamada O, Nishikawa K, Takahashi M, Matsuda S, Ohtake H, Ohno R. Analysis of prognostic factors in newly diagnosed patients with acute promyelocytic leukemia: the APL92 study of the Japan Adult Leukemia Study Group (JALSG). Cancer Chemother Pharmacol 2001; 48 Suppl 1:S65-71. [PMID: 11587370 DOI: 10.1007/s002800100308] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
All-trans-retinoic acid (ATRA) has been incorporated in front-line therapy for newly diagnosed acute promyelocytic leukemia (APL). We conducted a multicenter study of differentiation therapy with ATRA alone or in combination with chemotherapy followed by intensive postremission chemotherapy in patients with APL (the JALSG APL92 study), and analyzed prognostic factors to increase the cure rate in our subsequent trial. From 1992 to 1997, adult patients with newly diagnosed APL received oral ATRA 45 mg/m2 daily alone until complete remission (CR) if initial leukocyte counts were < 3.0x10(9)/l, and ATRA daily plus daunorubicin (DNR) 40 mg/m2x3 days plus enocitabine (BHAC) 200 mg/m2x5 days if leukocyte counts were > or =3.0 x 10(9)/l. If peripheral blasts exceeded 1.0x10(9)/l during therapy, DNRx3 days plus BHACx5 days was added. After CR was achieved, three courses of consolidation and six courses of maintenance/intensification chemotherapy were administered. Of 376 patients enrolled, 369 were evaluable (median age 46 years, range 15-86 years; median leukocyte counts 2.0x10(9)/l), and 333 (90%) achieved CR (94% of patients treated with ATRA alone, 88% with ATRA plus later chemotherapy, 89% with ATRA plus initial chemotherapy, and 86% with ATRA plus initial and later chemotherapy). At a median follow-up of 45 months, the predicted 6-year overall and event-free survival (EFS) rates for all patients were 65% and 52%, respectively. Favorable prognostic factors for CR were younger age, no or mild purpura, high serum total protein level, low lactate dehydrogenase level, and no or mild disseminated intravascular coagulation (DIC). Favorable prognostic factors for EFS were leukocyte counts < 10.0x10(9)/l, mild DIC, and no sepsis during induction therapy. In the JALSG APL97 study, we intensified chemotherapy for patients with leukocyte counts > or =3.0x10(9)/l, and are randomly testing whether further chemotherapy is required for APL patients with negative PCR for PML/retinoic acid receptor alpha in the maintenance phase.
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Affiliation(s)
- N Asou
- Second Department of Internal Medicine, Kumamoto University School of Medicine, Honjo, Japan.
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