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Yamada S, Sagayama H, Yamazaki M, Aoki H, Sugimoto K, Arima T. Physical properties and phase diagram of single crystal REBaMn2O6 (RE = Sm, Eu, Gd, Tb, Dy, and Y). J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123504] [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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Fukumoto KI, Miura S, Yamazaki M, Satou M. Effect of Temperature History on the Irradiation Behavior of Vanadium Alloy Irradiated with the MARICO-II Rig in a Fast Reactor, JOYO. Nuclear Materials and Energy 2022. [DOI: 10.1016/j.nme.2022.101153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Sakurai K, Nakamori K, Yamazaki M, Tanuma JI. Response to Letter to the Editor "Ectomesenchymal chondromyxoid tumour on the lateral border of the tongue: some historical and clinical considerations". Int J Oral Maxillofac Surg 2021; 50:1401. [PMID: 33653650 DOI: 10.1016/j.ijom.2020.11.026] [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] [Received: 09/27/2020] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Affiliation(s)
- K Sakurai
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, University of Toyama, Toyama City, Toyama, Japan.
| | - K Nakamori
- Department of Oral and Maxillofacial Surgery, Regional Independent Administrative Corporation Naha City Hospital, Naha City, Okinawa, Japan
| | - M Yamazaki
- Division of Oral Pathology, Faculty of Dentistry and Graduate School of Medical and Dental Science, Niigata University, Niigata City, Niigata, Japan
| | - J-I Tanuma
- Division of Oral Pathology, Faculty of Dentistry and Graduate School of Medical and Dental Science, Niigata University, Niigata City, Niigata, Japan
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Amino M, Kabuki S, Kunieda E, Sakai T, Sakama S, Ayabe K, Yagishita A, Shimokawa T, Yamazaki M, Ikari Y, Kodama I, Yoshioka K. Basic mechanism of atrial and ventricular arrhythmia suppression by heavy ion irradiation in hypercholesterolemic elderly rabbits. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Recent development of electrophysiology-guided noninvasive cardiac radioablation therapy for ventricular tachycardia attracts a great deal of attention as a novel antiarrhythmic strategy (Robinson CG, Circulation 2019). As to underlying mechanisms, however, much remains to be clarified. We reported before that a single targeted heavy ion irradiation (THIR 15Gy) to rabbit hearts increased connexin43 (Cx43) expression, and a reduction of vulnerability to ventricular arrhythmias after myocardial infarction.
Purpose
We investigated the effects of THIR on in-vivo cardiac electrophysiology and vulnerability to atrial and ventricular tachyarrhythmias in aged rabbits with hypercholesterolemia.
Methods
Sixteen three-year old rabbits were fed with high fat/cholesterol chow (0.5% cholesterol and 10% coconut oil) for 14 weeks. A single THIR 15Gy was applied to 8 rabbits (HC+THIR) with a heavy ion medical accelerator. Eight rabbits without THIR were used as control (HC).
Results
Serum cholesterol levels in the HC and HC+THIR were 1545+386 and 1569+328 mg/dl (n=8, NS). Atrial (P-wave) late potential in signal-averaged ECG in HC+THIR showed a significantly larger root mean square voltage (RMS) than those in HC (12+0.5 vs. 2+0.5μV, n=4, p<0.01). Ventricular late potentials in HC+THIR showed significantly less fQRS-D than HC (81+5 vs. 89+7 ms); less LAS40 (21+7 vs. 30+4 ms), and larger RMS (99+27 vs. 44+13μV) (n=4, p<0.04). Atrial tachycardia or fibrillation (AT/AF) was induced spontaneously or by programmed/burst pacing of the left atria (LA) in 4 out of 4 HC, whereas in only 1 out of 4 HC+THIR. Ventricular tachycardia or fibrillation (VT/VF) was induced spontaneously or by programmed pacing or left stellate stimulation in 4 out of 4 HC rabbits, whereas in only 1 out of 4 HC+THIR. Immunolabeled Cx40 densities in LA and RA tissue from HC+THIR rabbits were significantly higher than those from HC rabbits by 44% and 60%, respectively (n=4, p<0.01). Comparable upregulation of immunoreactive Cx43 was observed in LV and RV tissue from HC+THIR rabbits. Sympathetic nerve densities in LA, RA, LV and RV tissues, which was labeled with anti-neuronal growth-associated protein 43 (GAP43) antibody and tyrosine hydroxylase (TH) antibody were both significantly less in HC+THIR than those in HC.
Conclusion
These results suggest that THIR may improve cardiac conductivity of HC rabbits in favor of reduction of vulnerability to atrial and ventricular tachycardia/fibrillation, and that this antiarrhythmic effect is attributed to upregulation of gap junction protein (Cx40 and Cx43) and in part to prevention of sympathetic nerve sprouting.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): KAKENHI KIBAN (C) 53020
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Affiliation(s)
- M Amino
- Tokai University Hospital, Isehara, Japan
| | - S Kabuki
- Tokai University Hospital, Isehara, Japan
| | - E Kunieda
- Tokai University Hospital, Isehara, Japan
| | - T Sakai
- Tokai University Hospital, Isehara, Japan
| | - S Sakama
- Tokai University Hospital, Isehara, Japan
| | - K Ayabe
- Tokai University Hospital, Isehara, Japan
| | | | - T Shimokawa
- National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - M Yamazaki
- University of Tokyo, Medical Device Development and Regulation Research Center, Tokyo, Japan
| | - Y Ikari
- Tokai University Hospital, Isehara, Japan
| | - I Kodama
- Nagoya University, Nagoya, Japan
| | - K Yoshioka
- Tokai University Hospital, Isehara, Japan
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Asano T, Mitsuhashi Y, Sachi M, Wakabayashi K, Yahagi K, Shinke T, Mase T, Miyachi H, Tujiguchi S, Yamashita J, Yamazaki M, Miyauchi K, Yamamoto T, Nagao K, Takayama M. The impact of low diastolic blood pressure on 30-day mortality of patients with acute myocardial infarction. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1652] [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
It is known that low diastolic blood pressure (DBP) is associated with long-term cardiovascular events after acute myocardial infarction (AMI). However, the impact of low diastolic blood pressure on short-term outcome has not yet been well investigated.
Methods and results
We included 15,208 patients who were hospitalized for AMI and registered in the Tokyo CCU network registry between 2013 and 2016. Thirty-day in-hospital mortality rate was 4.8% (728/15,208). To assess the relationship between DBP at the time of admission and 30-day mortality non-linearly, spline regression model was applied with the stratification of the cohort according to tercile of systolic blood pressure (SBP, low:≤122 mmHg, intermediate:123–148 mmHg, high:≥149 mmHg) and J-curve phenomenon was observed in the low and high SBP groups. In multivariate logistic regression analysis, adjusted odds ratio of the lowest quintile of DBP (≤64 mmHg) was 1.65 (95% CI:1.02–2.66) in low SBP group and 4.55 (95% CI:1.72–12.00) in high SBP group.
Conclusion
Low DBP was associated with increased 30-day in-hospital mortality rate after AMI even in patients with high SBP.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Asano
- Tokyo CCU Network, Tokyo, Japan
| | | | - M Sachi
- Tokyo CCU Network, Tokyo, Japan
| | | | | | | | - T Mase
- Tokyo CCU Network, Tokyo, Japan
| | | | | | | | | | | | | | - K Nagao
- Tokyo CCU Network, Tokyo, Japan
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Fukumoto K, Fujita K, Saito H, Sekio Y, Yamazaki M. Effect of temperature history on swelling behavior of V-Fe binary alloy irradiated in a fast reactor Joyo. Nuclear Materials and Energy 2020. [DOI: 10.1016/j.nme.2020.100760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Yamazaki M, Takayama T, Mayumi S, Yazaki K, Takeshima S, Kamei J, Sugihara T, Fujimura T. 3D printed kidney model improves diagnostic accuracy of R.E.N.A.L nephrometry score by residents. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33932-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: 12/01/2022] Open
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Sakurai K, Nakamori K, Yamazaki M, Tanuma JI. An ectomesenchymal chondromyxoid tumour on the lateral border of the tongue. Int J Oral Maxillofac Surg 2020; 49:1290-1293. [PMID: 32371177 DOI: 10.1016/j.ijom.2020.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/04/2020] [Accepted: 04/16/2020] [Indexed: 11/25/2022]
Abstract
Ectomesenchymal chondromyxoid tumour (ECT) is an extremely rare intraoral mesenchymal tumour. Most of these tumours have been identified on the anterior aspect of the dorsal surface of the tongue. ECT is difficult to diagnose because of its rarity. We report a case of ECT arising on the lateral border of the tongue in a 67-year-old woman. The tumour, measuring 20 × 10 mm in size, was surgically removed. Histopathologically, the tumour was composed of small polygonal cells arranged in sheets, with a myxoid or hyalinized stroma. The tumour boundary was clear; however, the tumour showed a multinodular structure expanding along the tongue surface without obvious capsule. Careful examination revealed the tumour nodule to be spreading in a skip lesion-like fashion away from the main part of the tumour in the striated muscle layer. Although there was no evidence of recurrence at 18 months after the surgery, our observations suggest that surgery for ECT resection with a safety margin is more appropriate than enucleation.
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Affiliation(s)
- K Sakurai
- Department of Oral and Maxillofacial Surgery, Regional Independent Administrative Corporation Naha City Hospital, Naha, Okinawa, Japan.
| | - K Nakamori
- Department of Oral and Maxillofacial Surgery, Regional Independent Administrative Corporation Naha City Hospital, Naha, Okinawa, Japan
| | - M Yamazaki
- Division of Oral Pathology, Faculty of Dentistry and Graduate School of Medical and Dental science, Niigata University, Niigata, Japan
| | - J-I Tanuma
- Division of Oral Pathology, Faculty of Dentistry and Graduate School of Medical and Dental science, Niigata University, Niigata, Japan
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9
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Hasegawa H, Kaneko T, Kanno C, Endo M, Yamazaki M, Kitabatake T, Monma T, Takeishi E, Sato E, Kano M. Preoperative intra-arterial chemotherapy with docetaxel, cisplatin, and peplomycin combined with intravenous chemotherapy using 5-fluorouracil for oral squamous cell carcinoma. Int J Oral Maxillofac Surg 2020; 49:984-992. [PMID: 32070653 DOI: 10.1016/j.ijom.2020.01.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 11/30/2019] [Accepted: 01/20/2020] [Indexed: 11/29/2022]
Abstract
The objectives of this study were to evaluate survival in 141 patients with stage II-IV oral squamous cell carcinoma (OSCC) treated with preoperative intra-arterial chemotherapy with docetaxel, cisplatin, and peplomycin combined with intravenous chemotherapy using 5-fluorouracil (IADCPIVF) via the superficial temporal artery, and to clarify the prognostic factors. The study population included 59 patients with stage II OSCC, 34 with stage III, and 48 with stage IV. After IADCPIVF, 139 patients underwent surgery; minimally invasive surgeries (MIS) including excisional biopsy were performed on 96 patients with a remarkably good response to IADCPIVF. The primary tumour response rate was 99.3% (complete response rate 56.7%, good partial response rate 17.0%, fair partial response rate 25.5%). Additionally, there were no serious adverse events associated with IADCPIVF. The 5-year overall survival rate was 74.6% (stage II 83.6%, stage III 72.7%, stage IV 64.8%). In the multivariate analysis of survival, T classification and clinical tumour response were significant prognostic factors. Eight (8.3%) of the patients who received MIS had primary recurrence and six were salvaged. In conclusion, IADCPIVF is safe and efficacious for treating OSCC, and MIS could reduce the extent of primary tumour resection in the case of a remarkably good response.
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Affiliation(s)
- H Hasegawa
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan.
| | - T Kaneko
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - C Kanno
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - M Endo
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - M Yamazaki
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - T Kitabatake
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - T Monma
- Department of Dentistry and Oral Surgery, Fukushima Medical University, School of Medicine, Fukushima, Japan
| | - E Takeishi
- Department of Dentistry and Oral Surgery, Tsuruoka Municipal Shonai Hospital, Tsuruoka, Japan
| | - E Sato
- Department of Dentistry, Kashima Hospital, Ibaraki, Japan
| | - M Kano
- Department of Head and Neck, Facial Surgery, Ohara General Hospital, Fukushima, Japan
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Ito R, Takayama M, Yamashita J, Yahagi K, Shinke T, Mase T, Abe K, Miyaji H, Higuchi S, Tanaka H, Yamazaki M, Miyauchi K, Yamamoto T, Nagao K, Chikamori T. P850Clinical difference of recent myocardial infarction compared with acute myocardial infarction - Insights from Tokyo CCU network multicenter registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0448] [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
Although the patient's characteristics and outcome of acute myocardial infarction (AMI) have been sufficiently investigated and primary percutaneous coronary intervention (PCI) has been recognized as established treatment strategy, those of recent myocardial infarction (RMI) have not been fully evaluated.
Purpose
The purpose of the present study was to clarify clinical characteristics and in-hospital outcomes of RMI patients from the database of the Tokyo CCU network multicenter registry.
Methods
In Tokyo CCU network multicenter registry database from 2013 to 2016, 15788 consecutive patients were registered as AMI (within 24 hours from onset) and RMI (within 2–30 days from onset). However 1246 patients were excluded because of inadequate data. And we excluded 66 cases because of out of onset period and 129 cases that strongly suspected of involvement of vasospastic events. Therefore, remaining 14347 patients were categorized to RMI group (n=1853) and AMI group (n=12494), and analyzed.
Results
Compared with AMI group, average age was older (70.4±12.9 vs 68.0±13.4 years, p<0.001), male was less (72.4 vs 76.4%, p<0.001), chest pain as chief complaint was less (75.2 vs 83.6%, p<0.001), prevalence of diabetes mellitus was higher (35.9 vs 31.0%, p<0.001), multi-vessel coronary disease was more (54.7 vs 44.6%, p<0.001), patients undergoing PCI was less (79.0 vs 91.2%, p<0.001), and the incidence of mechanical complication was more in RMI group (3.0 vs 1.5%, p<0.001). Although 30-day mortality was equivalent between 2 groups (5.3 vs 5.8%, p=0.360), the major cause of death in AMI group was cardiogenic shock, while in the RMI group it was a mechanical complication. On Kaplan-Meier analysis, the 2 groups had significantly different cumulative incidence of death due to cardiogenic shock (p=0.006, Log-rank test) and mechanical complication (p=0.021, Log-rank test). Furthermore death due to mechanical complication in AMI group was plateau after about 1 week from hospitalization, whereas in RMI group it continued to increase.
Kaplan-Meier analysis
Conclusions
RMI patients had distinctive clinical features in backgrounds and treatment strategies compared with AMI patients, and the major cause of death of RMI patients was different from that of AMI patients. Furthermore, even though treatment during hospitalization of RMI patients was well done, death due to mechanical complications continued to increase.
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Affiliation(s)
- R Ito
- Tokyo Medical University, Department of Cardiology, Tokyo, Japan
| | | | | | | | | | - T Mase
- Tokyo CCU Network, Tokyo, Japan
| | - K Abe
- Tokyo CCU Network, Tokyo, Japan
| | | | | | | | | | | | | | - K Nagao
- Tokyo CCU Network, Tokyo, Japan
| | - T Chikamori
- Tokyo Medical University, Department of Cardiology, Tokyo, Japan
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Yamazaki M, Sengoku R, Murayama S. Semantic dementia, an autopsy case with a clinical course of 17 years. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Shimizu Y, Kadone H, Kubota S, Suzuki K, Abe T, Ueno T, Hada Y, Yamazaki M. Heterotopic triggered HAL method for patients with complete quadriplegia or paraplegia due to chronic spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Matsushita A, Saotome K, Marushima A, Ueno T, Masumoto T, Kawamoto H, Nakai K, Tsurushima H, Hada Y, Kohno Y, Yamazaki M, Sankai Y, Matsumura A. The neural network change of acute stroke patients along the robot therapy. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Kubota S, Shimizu Y, Kadone H, Abe T, Mutsuzaki H, Hada Y, Yamazaki M. Hybrid assistive limb (HAL) treatment for patients with severe thoracic myelopathy caused by ossification of the posterior longitudinal ligament (OPLL) in postoperative acute phase. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kadone H, Shimizu Y, Kubota S, Paez D, Ueno T, Hada Y, Suzuki K, Yamazaki M. Clinical assessment of stand-up and sit-down motion assist by personal standing mobility QoLo in people with spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Eda H, Yamazaki M. Cuff-less blood pressure estimation system enables continuous monitoring during sleep. How do we believe that estimation values? Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.250] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yamazaki M, Eda H, Sasou A, Kamiya A, Miyagi Y, Oota M, Takeda I, Takagi S, Matsuura M, Yamashiro Y. Continuous cuff-less blood pressure parameter monitoring by the optical sensor in patients with obstructive sleep apnea syndrome. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.1039] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Yamazaki M, Sengoku R, Kanemaru K, Murayama S. Validation of the simple smell identification test for evaluation of olfactory dysfunction in patients with Parkinson's disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2967] [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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Nishina Y, Komiya T, Motoyama R, Yamazaki M, Hiroyoshi Y, Higashihara M, Shibukawa M, Sunagawa M, Kato T, Takanashi S, Kouda S, Sengoku R, Kanemaru K, Murayama S. Safety and efficacy of alteplase in the treatment of extremely old patients of acute ischemic stroke. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1786] [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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Miyagawa S, Onda A, Yamazaki M, Yaguchi H. Efficacy of NPPV for vocal cord abductor paralysis with floppy epiglottis in multiple system atrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1641] [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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21
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Hashimoto T, Yamazaki M, Kakita A, Takahashi H, Adachi H, Oyanagi K. Two distribution patterns of TDP-43-immunopositve inclusions in amyotrophic lateral sclerosis of Guam: Comparison with parkinsonism-dementia complex of Guam and classic ALS. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.587] [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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22
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Oyanagi K, Suzuki-Kouyama E, Yahikozawa H, Ohara S, Yamazaki M, Sakai T, Ushiyama M, Yasude T, Arai N, Ikeda S. Phosphorylated MTOR in the spinal anterior horn cells of patients with sporadic amyotrophic lateral sclerosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1995] [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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Shibukawa M, Shibukawa M, Sengoku R, Yamazaki M, Nishina Y, Kanemaru K, Murayama S. Evaluation of orthostatic hypotension in Parkinson disease by measuring the catecholamine level and using a Cardiac MIBG scintigraphy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2587] [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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Tsukagoshi Y, Kamegaya M, Kamada H, Saisu T, Morita M, Kakizaki J, Tomaru Y, Yamazaki M. The correlation between Salter's criteria for avascular necrosis of the femoral head and Kalamchi's prognostic classification following the treatment of developmental dysplasia of the hip. Bone Joint J 2017; 99-B:1115-1120. [PMID: 28768791 DOI: 10.1302/0301-620x.99b8.bjj-2016-1070.r1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 03/18/2017] [Indexed: 12/31/2022]
Abstract
AIMS The aim of this study was to evaluate the correlation between Salter's criteria and Kalamchi's classification of avascular necrosis in patients treated for developmental dysphasia of the hip (DDH). PATIENTS AND METHODS The study involved a retrospective analysis of 123 patients (123 hips) with DDH treated by operative and non-operative reduction before the age of two years, with a minimum follow-up of ten years. Salter's criteria (S1 to S4) were determined from radiographs obtained at one to two years post-reduction, whilst the Kalamchi grade was determined from radiographs obtained at ten or more years of age. Early post-reduction radiographs were also used to evaluate the centre-head distance discrepancy (CHDD) and the occurrence of a dome-shaped deformity of the proximal femoral metaphysis (D-shaped metaphysis). The prognosis was described as good (Kalamchi grade K0 or KI), fair (Kalamchi grade KII) or poor (Kalamchi grade KIII or KIV) for analysis and correlation with the early Salter criteria, CHDD and D-shaped metaphysis. RESULTS S1 and S2 criteria were predictive of a poor prognosis. The outcome following S3, S4 and S3 + S4 varied; 18 (40%) had a good prognosis, 17 (38%) a fair prognosis and ten (22%) a poor prognosis. A CHDD ≥ 10% and a D-shaped metaphysis were also predictive of a poor prognosis. CONCLUSION The Salter criteria were predictive of the Kalamchi grade of avascular necrosis in patients with DDH aged ten or more years after reduction of the hip. Cite this article: Bone Joint J 2017;99-B:1115-20.
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Affiliation(s)
- Y Tsukagoshi
- University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - M Kamegaya
- Chiba Child & Adult Orthopaedic Clinic (Chiba Pediatric Orthopaedic Group), 3-24-2, Oyumino-Minami, Midori-ku, Chiba-city, Chiba, 266-0033, Japan
| | - H Kamada
- University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - T Saisu
- Chiba Children's Hospital (Chiba Pediatric Orthopaedic Group), 579-1, Heta-cho, Midori-ku, Chiba-city, Chiba, 266-0077, Japan
| | - M Morita
- Chiba Child & Adult Orthopaedic Clinic (Chiba Pediatric Orthopaedic Group), 3-24-2, Oyumino-Minami, Midori-ku, Chiba-city, Chiba, 266-0033, Japan
| | - J Kakizaki
- Chiba Children's Hospital (Chiba Pediatric Orthopaedic Group), 579-1, Heta-cho, Midori-ku, Chiba-city, Chiba, 266-0077, Japan
| | - Y Tomaru
- University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - M Yamazaki
- University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8575, Japan
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Isomura R, Yamazaki M, Inoue M, Kwan NCL, Matsuda M, Sugiura K. The age, breed and sex pattern of diagnosis for veterinary care in insured cats in Japan. J Small Anim Pract 2017; 58:89-95. [PMID: 28160304 DOI: 10.1111/jsap.12617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 08/17/2016] [Accepted: 10/02/2016] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To estimate the annual prevalence of different diagnostic categories by age, breed and sex in insured cats in Japan for which veterinary care claims had been made, and to identify if there is a pattern in these host factors. MATERIALS AND METHODS Data from 48,187 cats insured for veterinary care in Japan in the period from April 2012 to March 2013 comprising 26,003 males and 22,184 females were analysed to calculate the annual prevalence of 18 diagnostic categories of disease by age, breed and sex. RESULTS The prevalence was highest for urinary system disorders (12·2% for males and 10·0% for females), followed by digestive disorders (11·6% for males and 10·7% for females) and dermatological diseases (8·7% for males and 9·0% for females). The male cats had a higher prevalence than female cats for most diagnostic categories. The prevalence of cardiovascular, urinary, endocrine and neoplastic disorders increased with age; infectious and parasitic diseases had high prevalence at young ages, and the prevalence of respiratory, musculoskeletal disorders and injuries had bimodal peaks. Dermatological disorders had a high prevalence at all ages. A large variation in prevalence was observed between breeds for otic, dermatological, dental and cardiovascular disorders. CLINICAL SIGNIFICANCE The findings can be used to increase awareness of patterns of health disorders in different categories of cat.
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Affiliation(s)
- R Isomura
- Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - M Yamazaki
- Anicom Insurance Inc., Shinjuku-ku, Tokyo 161-0033, Japan
| | - M Inoue
- Anicom Insurance Inc., Shinjuku-ku, Tokyo 161-0033, Japan
| | - N C L Kwan
- Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - M Matsuda
- Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
| | - K Sugiura
- Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan
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Osaka T, Hashimoto Y, Fukuda T, Tanaka M, Yamazaki M, Fukui M. Relationship between skeletal muscle mass and hepatic fibrosis in patients with type 2 diabetes. Diabetes & Metabolism 2017; 43:184-186. [DOI: 10.1016/j.diabet.2016.07.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 07/31/2016] [Indexed: 12/22/2022]
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Yamazaki M, Ohnishi T, Hosokawa K, Yamaguchi K, Yoneyama T, Kawashima A, Okada Y, Kitagawa K, Uchiyama S. Measurement of residual platelet thrombogenicity under arterial shear conditions in cerebrovascular disease patients receiving antiplatelet therapy. J Thromb Haemost 2016; 14:1788-97. [PMID: 27328457 DOI: 10.1111/jth.13391] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 05/22/2016] [Indexed: 11/29/2022]
Abstract
UNLABELLED Essentials A consensus methodology for assessing the effects of antiplatelet agents has not been established. Measuring platelet thrombus formation (PTF) for evaluating antiplatelet effects was assessed. PTF differentially reflected antiplatelet effects compared to other tests. PTF may be associated with the severity of carotid or intracranial arterial stenosis. Click to hear a presentation on platelet function testing in the clinic by Gresele and colleagues SUMMARY Background A consensus methodology for assessing the effects of antiplatelet agents has not been established. Objective We investigated the usefulness of directly measuring platelet thrombus formation (PTF) using a microchip-based flow chamber system for evaluating antiplatelet therapy. Patients/Methods Platelet thrombus formation in the whole blood of 94 patients with ischemic cerebrovascular disease treated with clopidogrel and/or aspirin was measured in a flow chamber system at a shear rate of 1500 s(-1) and was compared with the results of assays for agonist-induced platelet aggregability, phosphorylation of vasodilator-stimulated phosphoprotein, platelet p-selectin expression (PS), and platelet-monocyte complexes. Results In all patients tested, area under the flow pressure curve (AUC10), which represents platelet thrombogenicity, showed weak correlation with platelet aggregation induced by either adenosine diphosphate or collagen. In addition, AUC10 was lower in patients treated with dual antiplatelet therapy (median 79.4) compared with patients treated with aspirin or clopidogrel alone (217.7 and 301.0, respectively), whereas the parameters evaluated by the other assays did not reflect the combined treatment efficacy. In clopidogrel monotherapy patients, AUC10 was associated with the severity of arterial stenosis (R(2) = 0.127, β = 1.25), and AUC10 and PS were higher in patients with severe carotid or intracranial arterial stenosis than in those with mild stenosis. Conclusions Platelet thrombus formation measurement using a flow-chamber system was useful for evaluating the efficacy of treatment with aspirin and clopidogrel, both alone and in combination. The present findings indicate that high residual platelet thrombogenicity in patients treated with clopidogrel may be associated with the severity of carotid or intracranial arterial stenosis.
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Affiliation(s)
- M Yamazaki
- Department of Neurology, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan.
| | - T Ohnishi
- Research Institute, Fujimori Kogyo Co., Ltd, Yokohama, Kanagawa, Japan
| | - K Hosokawa
- Research Institute, Fujimori Kogyo Co., Ltd, Yokohama, Kanagawa, Japan
| | - K Yamaguchi
- Department of Neurosurgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - T Yoneyama
- Department of Neurosurgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - A Kawashima
- Department of Neurosurgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - Y Okada
- Department of Neurosurgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - K Kitagawa
- Department of Neurology, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - S Uchiyama
- Department of Neurology, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
- Clinical Research Center for Medicine, International University of Health and Welfare, Center for Brain and Cerebral Vessels, Sanno Hospital and Sanno Medical Center, Tokyo, Minato-ku, Japan
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Hashimoto Y, Fukuda T, Oyabu C, Tanaka M, Asano M, Yamazaki M, Fukui M. Impact of low-carbohydrate diet on body composition: meta-analysis of randomized controlled studies. Obes Rev 2016; 17:499-509. [PMID: 27059106 DOI: 10.1111/obr.12405] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/27/2016] [Accepted: 02/12/2016] [Indexed: 12/20/2022]
Abstract
The effect of low-carbohydrate diet (LCD) on body composition, especially fat mass, in obese individuals remains to be elucidated. We performed a meta-analysis to provide quantitative summary estimates of the mean change of body weight (kg) and fat mass (kg) in LCD comparing to those in control diet. Literature searches were performed using EMBASE, MEDLINE and Cochrane Library until Dec 2014. Fourteen randomized controlled studies were included in this meta-analysis. Eight studies including very LCD (50 g carbohydrate or 10% calorie from carbohydrate) and seven studies including mild LCD (about 40% calorie from carbohydrate). Meta-analysis carried out on data of 1416 obese individuals, showed that LCD was associated with decrease in body weight (-0.70 kg [95% CI -1.07/-0.33]) or fat mass (-0.77 kg [-1.55/-0.32]). Subgroup meta-analysis of studies in over 12 months suggested that LCD was not associated with decrease in body weight (-0.44 kg [-0.94/0.07]), but LCD was associated with decrease in fat mass (-0.57 kg [-1.05/-0.09]). In addition, very LCD was associated with decrease in fat mass (-0.97 kg [-1.50/-0.44]), but mild LCD was not associated with decrease in fat mass (-0.43 kg [-1.15/0.33]). LCD, especially very LCD, might be effective for decrease in fat mass in obese individuals. © 2016 World Obesity.
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Affiliation(s)
- Y Hashimoto
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - T Fukuda
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - C Oyabu
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Tanaka
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Asano
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Yamazaki
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Fukui
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Takano H, Takahashi T, Nakata A, Nogami S, Yusa K, Kuwajima S, Yamazaki M, Fukuda M. Facilitation of bone resorption activities in synovial lavage fluid patients with mandibular condyle fractures. J Oral Rehabil 2016; 43:333-9. [DOI: 10.1111/joor.12388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2016] [Indexed: 12/01/2022]
Affiliation(s)
- H. Takano
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - T. Takahashi
- Division of Maxillofacial Surgery Department of Oral Medicine and Surgery Graduate School of Dentistry Tohoku University Sendai MiyagiJapan
| | - A. Nakata
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - S. Nogami
- Division of Maxillofacial Surgery Department of Oral Medicine and Surgery Graduate School of Dentistry Tohoku University Sendai MiyagiJapan
| | - K. Yusa
- Department of Dentistry Oral and Maxillofacial‐Plastic and Reconstructive Surgery School of Medicine Faculty of Medicine Yamagata University Yamagata Japan
| | - S. Kuwajima
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - M. Yamazaki
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
| | - M. Fukuda
- Department of Dentistry and Oral Surgery Akita University Graduate School of Medicine AkitaJapan
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Han R, Rai A, Nakamura M, Suzuki H, Takahashi H, Yamazaki M, Saito K. De Novo Deep Transcriptome Analysis of Medicinal Plants for Gene Discovery in Biosynthesis of Plant Natural Products. Methods Enzymol 2016; 576:19-45. [DOI: 10.1016/bs.mie.2016.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Motoike T, Skach A, Godwin J, Sinton C, Yamazaki M, Abe M, Natsume R, Sakimura K, Yanagisawa M. Corrigendum to “Transient expression of neuropeptide W in postnatal mouse hypothalamus – A putative regulator of energy homeostasis” [Neuroscience 301 (2015) 323–337]. Neuroscience 2015. [DOI: 10.1016/j.neuroscience.2015.06.064] [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: 12/01/2022]
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Hashimoto Y, Tanaka M, Senmaru T, Okada H, Hamaguchi M, Asano M, Yamazaki M, Oda Y, Hasegawa G, Nakamura N, Fukui M. Heart rate-corrected QT interval is a novel risk marker for the progression of albuminuria in people with Type 2 diabetes. Diabet Med 2015; 32:1221-6. [PMID: 25683576 DOI: 10.1111/dme.12728] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/09/2015] [Indexed: 12/24/2022]
Abstract
AIMS A close association between heart rate-corrected QT interval (QTc) and albuminuria in people with Type 2 diabetes has been reported in cross sectional studies. The aim of this study was to evaluate the relationship between QTc and change in urine albumin excretion (UAE) or progression of albuminuria in people with Type 2 diabetes. METHODS We measured QTc in 251 consecutive people at baseline. We performed a 5-year follow-up cohort study to assess the relationship between QTc and change in UAE, defined as an increase of UAE/follow-up duration (year), or progression of albuminuria, defined as an increase in the category of diabetic nephropathy. RESULTS During follow-up, 23 of 151 people with normoalbuminuria and 13 of 73 people with microalbuminuria at baseline had progression of albuminuria. Multiple regression analysis demonstrated that QTc was independently associated with change in UAE (β = 0.176, P = 0.0104). Logistic regression analyses showed that QTc was a risk marker for progression of albuminuria [odds ratio per 0.01-s increase in QTc 1.35, 95% confidence interval (CI) 1.11-1.66, P = 0.0024] after adjusting for confounders. According to the receiver operator characteristic (ROC) analysis, the optimal cut-off point of QTc for progression of albuminuria was 0.418 s [area under the ROC curve 0.75 (95% CI 0.66-0.82), sensitivity = 0.86, specificity = 0.56, P < 0.0001]. CONCLUSIONS Heart rate-corrected QT interval could be a novel risk marker for progression of albuminuria in people with Type 2 diabetes.
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Affiliation(s)
- Y Hashimoto
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Tanaka
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - T Senmaru
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - H Okada
- Division of Metabolism, Nephrology and Rheumatology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
| | - M Hamaguchi
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Asano
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Yamazaki
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Y Oda
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - G Hasegawa
- Division of Metabolism, Nephrology and Rheumatology, Japanese Red Cross Kyoto Daini Hospital, Kyoto, Japan
| | - N Nakamura
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - M Fukui
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Akaogi H, Tomaru Y, Yoshioka T, Sugaya H, Aoto K, Wada H, Hyodo K, Nakatani T, Ochiai N, Yamazaki M, Mishima H. AB0535 Concentrated Autologous Bone Marrow Aspirate Transplantation for Corticosteroid-Induced Osteonecrosis of the Femoral Head in Systemic Lupus Erythematosus. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.1978] [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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Harada T, Arafune T, Yamazaki M, Honjo H, Shibata N, Sakuma I. Simultaneous optical mapping system of endocardial and epicardial excitation. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2014:2853-6. [PMID: 25570586 DOI: 10.1109/embc.2014.6944218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The cardiac excitation propagation during arrhythmia shows a three-dimensional complex excitation behavior. Numerous optical measurements of the propagation and action potentials of the cardiac muscles have been made to elucidate the detailed arrhythmia phenomenon. The conventional optical measurement system mainly observes the action potential signal of the epicardium, and the endocardial signal measurement without incising the heart is difficult. In addition, an incised heart no longer exhibits the natural excitation behavior. Therefore, we constructed a simultaneous measurement system that integrates the conventional epicardial measurement system and the endocardial measurement system by using an endoscope for an intact heart. Then, we proposed a line-laser registration method that can match correspondence between the epicardial and endocardial images for a short period. We demonstrated that this registration method has a sub-millimeter accuracy. Subsequently, we succeeded in simultaneous optical measurement of the excitation propagation of the epicardium and endocardium of the right heart wall by using an isolated rabbit heart.
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Kasuga A, Takahashi H, Murase T, Yamazaki M, Yamamoto T. Maternal and fetal effects of pandemic H1N1 2009 influenza virus infection on pregnant mice. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.044] [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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Avula U, Yamazaki M, Rojas-Pena A, O’Connell R, Musa H, Anumonwo J, Kalifa J. DANTROLENE PREVENTS LEFT ATRIAL INFARCTION-INDUCED SPONTANEOUS FOCAL DISCHARGES AND ATRIAL FIBRILLATION INITIATION IN SHEEP. Heart Rhythm 2014. [DOI: 10.1016/j.hrthm.2014.09.034] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Kosugi C, Koda K, Denda T, Ishibashi K, Ishida H, Seike K, Sakata H, Yanagisawa S, Natsume T, Takayama W, Koike N, Matsubara H, Tanaka K, Yamazaki M, Shuto K, Suzuki M, Matsuo K, Mori M, Hirano A. Voice Trial-Results from a Multicenter Phase Ii Study of Assessment of Clinical Efficacy and Safety in Capecitabine Plus Intermittent Oxaliplatin Together with Bevacizumab As the First-Line Therapy for the Patients with Advanced Colorectal Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.27] [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: 11/12/2022] Open
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Affiliation(s)
- M Yamazaki
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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Affiliation(s)
- M Yamazaki
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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Yamazaki M, Ueda H, Fukuda K, Okamoto M, Yui S. Priming Effects of Vegetable Juice on Endogenous Production of Tumor Necrosis Factor. Biosci Biotechnol Biochem 2014; 56:149. [PMID: 1368128 DOI: 10.1271/bbb.56.149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M Yamazaki
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Teikyo University, Kanagawa, Japan
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Yamazaki M, Ishikawa H, Kunii R, Tasaki A, Sato S, Ikeda Y, Yoshimura N, Aoyama H. Relationship between CT features and high preoperative serum carcinoembryonic antigen levels in early-stage lung adenocarcinoma. Clin Radiol 2014; 69:559-66. [DOI: 10.1016/j.crad.2013.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 12/05/2013] [Accepted: 12/12/2013] [Indexed: 12/17/2022]
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Abstract
AIMS The aim of this study was to examine whether low serum potassium concentration could be a predictor of chronic kidney disease (CKD) in a community-based cohort. MATERIALS AND METHODS We enrolled 1001 subjects, median period of 5.7 years, and evaluated the risk factors for CKD, defined as estimated glomerular filtration rate (eGFR) < 60 ml/min/1.73 m(2), and assessed whether low serum potassium concentration could predict CKD. RESULTS Compared with the subjects without development of CKD, age, body mass index, fasting plasma glucose, uric acid (UA), creatinine and serum sodium concentration were higher, and serum potassium concentration was lower in subjects with development of CKD. Univariate Cox regression analyses demonstrated that age, body mass index, fasting plasma glucose, UA, creatinine, serum sodium concentration and serum potassium concentration were associated with progression of CKD. Multiple Cox regression analysis revealed that age, gender, creatinine and serum potassium concentration were independent predictors of CKD after adjustment for covariates. When serum potassium concentration was below 4.0 mmol/l at baseline, hazard ratio (95% confidence interval) of developing CKD was 2.65 (2.04-3.44; p < 0.0001). CONCLUSIONS Serum potassium concentration could be a clinically relevant risk factor for the progression of CKD, defined as eGFR < 60 ml/min/1.73 m(2) , in healthy subjects.
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Affiliation(s)
- M Fukui
- Department of Endocrinology and Metabolism, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Berenfeld O, Yamazaki M, Filgueiras-Rama D, Kalifa J. Surface and intramural reentrant patterns during atrial fibrillation in the sheep. Methods Inf Med 2014; 53:314-9. [PMID: 24852817 DOI: 10.3414/me13-02-0047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 03/13/2014] [Indexed: 01/11/2023]
Abstract
INTRODUCTION This article is part of the Focus Theme of Methods of Information in Medicine on "Biosignal Interpretation: Advanced Methods for Studying Cardiovascular and Respiratory Systems". BACKGROUND Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in humans and is predicted to dramatically increase its prevalence in the future. High-resolution mapping data and Fourier power spectral analysis with its dominant frequency support the hypothesis that AF in the structurally normal sheep heart and in some patients often presents organized drivers in the form of periodic surface re-entries or breakthroughs. Nevertheless, the dynamics of those surface patterns of activity, as well as their intramural components are still poorly understood. OBJECTIVE To present data on AF waves from the surface of isolated sheep hearts and discuss the interpretation of their intramural patterns. METHODS We used a combination of endocardial-epicardial optical mapping with phase and spectral analysis as well as computer simulation of the re-entrant activity in the myocardial wall. RESULTS Analysis of the surfaces' optical mapping data in the phase domain reveals that activation of the posterior left atrium (PLA) consisted of alternating patterns of breakthroughs and reentries. The patterns on the endocardial and epicardial PLA surface at any given moment of time of the AF could be either identical or not identical, and the activity in the thickness of the PLA wall is hypothesized to conform to either ectopic discharge or reentrant scroll waves, but a definite evidence for the presence of such mechanisms is currently lacking. A universal minimal-principle theory is shown in a computer model to result in a tendency of the axis of the scroll waves to align with the myocardial fibers inside the wall. CONCLUSION The tendency of filaments of scroll waves to align with myocardial fibers may contribute to the variety and intermittency of surface rotors seen in AF.
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Affiliation(s)
- O Berenfeld
- Omer Berenfeld, PhD, Associate Professor of Internal Medicine and Biomedical Engineering, Center for Arrhythmia Research, Departments of Internal Medicine and Biomedical Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109, USA, E-mail:
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Wang DN, Toyotome T, Muraosa Y, Watanabe A, Wuren T, Bunsupa S, Aoyagi K, Yamazaki M, Takino M, Kamei K. GliA in Aspergillus fumigatus is required for its tolerance to gliotoxin and affects the amount of extracellular and intracellular gliotoxin. Med Mycol 2014; 52:506-18. [DOI: 10.1093/mmy/myu007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Matsumoto S, Sekine K, Funaoka H, Yamazaki M, Shimizu M, Hayashida K, Kitano M. Diagnostic performance of plasma biomarkers in patients with acute intestinal ischaemia. Br J Surg 2014; 101:232-8. [PMID: 24402763 DOI: 10.1002/bjs.9331] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/13/2013] [Indexed: 12/22/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the use of intestinal fatty acid binding protein (I-FABP) and traditional biomarkers in the early diagnosis of acute intestinal ischaemia of different causes. METHODS I-FABP, white blood cell (WBC) count, C-reactive protein, base deficit, lactate, lactate dehydrogenase, aspartate aminotransferase, creatine kinase and D-dimer were measured prospectively in consecutive patients suspected of having acute intestinal ischaemia. Biomarker levels were compared in patients with vascular and non-vascular ischaemia. RESULTS Two hundred and eight patients with a clinical suspicion of acute intestinal ischaemia were enrolled. Vascular intestinal ischaemia was diagnosed in 24 patients (11·5 per cent), non-vascular ischaemia in 62 (29·8 per cent) and non-ischaemic disease in 122 (58·7 per cent). The levels of most biomarkers (except WBC count and creatine kinase) were significantly higher in the vascular ischaemia group than in the other groups (P < 0·010). However, none of the biomarker levels differed between patients with non-vascular intestinal ischaemia and those with non-ischaemic disease. Receiver operating characteristic (ROC) curve analysis suggested that I-FABP was best at diagnosing vascular intestinal ischaemia (area under the curve 0·88). CONCLUSION Serum biomarkers may be useful in the diagnosis of vascular, but not non-vascular, intestinal ischaemia. Among them, I-FABP shows promise for detecting vascular ischaemia.
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Affiliation(s)
- S Matsumoto
- Department of Trauma and Emergency Surgery, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Japan
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Son A, Oshio T, Kawamura YI, Hagiwara T, Yamazaki M, Inagaki-Ohara K, Okada T, Wu P, Iseki M, Takaki S, Burkly LC, Dohi T. TWEAK/Fn14 pathway promotes a T helper 2-type chronic colitis with fibrosis in mice. Mucosal Immunol 2013; 6:1131-42. [PMID: 23462911 DOI: 10.1038/mi.2013.10] [Citation(s) in RCA: 34] [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: 05/17/2012] [Accepted: 01/30/2013] [Indexed: 02/04/2023]
Abstract
Tumor necrosis factor (TNF)-like weak inducer of apoptosis (TWEAK), a TNF superfamily member, induces damage of the epithelial cells (ECs) and production of inflammatory mediaters through its receptor Fn14 in a model of acute colitis. In our current study of chronic colitis induced by repeated rectal injection of a hapten, we found that inflammation, fibrosis, and T helper 2 (Th2)-type immunity were significantly reduced in Fn14 gene knockout (KO) mice when compared with wild-type (WT) control mice. Expression of thymic stromal lymphopoietin (TSLP) was lower in Fn14 KO colon ECs than in WT ECs. TWEAK potentiates the induction of TSLP by interleukin-13 (IL-13) in colon explants from WT but not in Fn14 KO tissue. TSLP receptor KO mice exhibit milder chronic colitis, similar to that in Fn14 KO mice. TWEAK and IL-13 synergistically promote fibroblast proliferation. Thus we propose an IL-13-TWEAK/Fn14-TSLP axis as a key mechanism underlying chronic colitis with fibrosis.
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Affiliation(s)
- A Son
- Department of Gastroenterology, Research Center for Hepatitis and Immunology, Research Institute, National Center for Global Health and Medicine, Chiba, Japan
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Yamazaki M, Kasai Y, Oishi K, Nakazawa H, Takahashi M. Development of an (e,2e) electron momentum spectroscopy apparatus using an ultrashort pulsed electron gun. Rev Sci Instrum 2013; 84:063105. [PMID: 23822331 DOI: 10.1063/1.4809792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An (e,2e) apparatus for electron momentum spectroscopy (EMS) has been developed, which employs an ultrashort-pulsed incident electron beam with a repetition rate of 5 kHz and a pulse duration in the order of a picosecond. Its instrumental design and technical details are reported, involving demonstration of a new method for finding time-zero. Furthermore, EMS data for the neutral Ne atom in the ground state measured by using the pulsed electron beam are presented to illustrate the potential abilities of the apparatus for ultrafast molecular dynamics, such as by combining EMS with the pump-and-probe technique.
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Affiliation(s)
- M Yamazaki
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
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Koda M, Rokkaku T, Mannoji C, Okamoto Y, Kon T, Murakami M, Furuya T, Yamazaki M. Spontaneous migration of a redundant nerve root accompanied by absorption of lumbar disk herniation. A case report. Neuroradiol J 2012; 25:617-20. [PMID: 24029099 DOI: 10.1177/197140091202500517] [Citation(s) in RCA: 4] [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] [Received: 08/15/2012] [Accepted: 09/23/2012] [Indexed: 11/16/2022] Open
Abstract
A redundant nerve root is defined as a large, elongated and tortuous nerve root commonly associated with severe lumbar spinal canal stenosis. Elongation of nerve roots as a result of mechanical trapping at stenotic level is assumed to be a possible mechanism. Here we present a case in a patient who showed a redundant nerve root above the level of a lumbar canal stenosis caused by disk herniation and redundancy spontaneously migrating to a lower lumbar stenosis level accompanied by absorption of the herniated disk as shown by magnetic resonance imaging (MRI). A 67-year-old Japanese woman presented with bilateral thigh/leg pain and intermittent claudication. A midsagittal T2-weighted MR image of the lumbar spine revealed severe spinal canal stenosis at the L3-4 and L4-5 levels. At the L3-4 level, central disk herniation compressed the dural tube. An MR image revealed redundant nerve roots just cranial to the severely compressed L3-4 level. A follow-up MRI study revealed regression of disk herniation at the L3-4 level. In contrast, there was no significant change of the stenosis at the L4-5 level. Sagittal T2-weighted MR imaging at follow-up revealed redundant nerve roots just cranial to the L4-5 level, whereas the redundant nerve roots cranial to the L3-4 level had disappeared. The MRI findings of the present case support the "squeeze" hypothesis as causative of redundant nerve roots.
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Affiliation(s)
- M Koda
- Department of Orthopedic Surgery, Chiba Aoba Municipal Hospital; Chiba, Japan -
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Abstract
We report the fabrication of non-emissive short- and long-pass filters on plastic for high sensitivity fluorescence detection. The filters were prepared by overnight immersion of titania-coated polyethylene terephthalate (PET) in an appropriate dye solution - xylene cyanol for short-pass filtering and fluorescein disodium salt for long-pass filtering - followed by repeated washing to remove excess dye. The interface between the titania and the dye molecule induces efficient quenching of photo-generated excitons in the dye molecule, reducing auto-fluorescence to negligible values and so overcoming the principal weakness of conventional colour filters. Using the filters in conjunction with a 505 nm cyan light-emitting diode and a Si photodiode, dose-response measurements were made for T8661 Transfluosphere beads in the concentration range 1 × 10(9) to 1 × 10(5) beads μL(-1), yielding a limit of detection of 3 × 10(4) beads μL(-1). The LED/short-pass filter/T8661/long-pass filter/Si-photodiode combination reported here offers an attractive solution for sensitive, low cost fluorescence detection that is readily applicable to a wide range of bead-based immunodiagnostic assays.
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Affiliation(s)
- M Yamazaki
- Dept. Chemistry and Centre for Plastic Electronics, Imperial College London, Exhibition Road South Kensington, London SW7 2AY, UK
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Tsuneki M, Maruyama S, Yamazaki M, Abé T, Adeola HA, Cheng J, Nishiyama H, Hayashi T, Kobayashi T, Takagi R, Funayama A, Saito C, Saku T. Inflammatory histopathogenesis of nasopalatine duct cyst: a clinicopathological study of 41 cases. Oral Dis 2012; 19:415-24. [PMID: 23034145 DOI: 10.1111/odi.12022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 08/06/2012] [Accepted: 09/03/2012] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The aim of this study is to characterize immunohistochemical profiles of lining epithelia of nasopalatine duct cyst (NPC) as well as to correlate those findings with their clinicopathological features to understand the histopathogenesis of NPC. MATERIALS AND METHODS Forty-one surgical specimens from NPC were examined for clinical profiles and expression of keratin-7, 13, MUC-1, and P63 by immunohistochemistry, compared to radicular cyst (RC) and maxillary sinusitis. RESULTS Nasopalatine duct cyst was clinically characterized by male predominant occurrence: 44% of the cases involved tooth roots, and 70% with inflammatory backgrounds. Lining epithelia of NPCs without daughter cysts were immunohistochemically distinguished into three layers: a keratin 7-positive (+) ciliated cell layer in the surface, a keratin-13+ middle layer, and a MUC-1+/P63+ lower half, indicating that they were not respiratory epithelia, and the same layering pattern was observed in RC. However, those immunolocalization patterns of the main cyst lining with daughter cyst were exactly the same as those of daughter cyst linings as well as duct epithelia of mucous glands. CONCLUSIONS Two possible histopathogenesis of NPC were clarified: one was inflammatory cyst like RC and the other was salivary duct cyst-like mucocele.
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Affiliation(s)
- M Tsuneki
- Division of Oral Pathology, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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