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Tamura S, Shimeno K, Hayashi Y, Naruko T, Fukuda D. Effective ablation of atrial tachycardia with an epicardial circuit-insights from endocardial scars sites: a case study. J Interv Card Electrophysiol 2024; 67:1-3. [PMID: 37991668 DOI: 10.1007/s10840-023-01687-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/30/2023] [Indexed: 11/23/2023]
Abstract
A previous study reported primary macroreentrant atrial tachycardia (AT) in the left atrium (LA), including the epicardial circuit on a left atrial anterior wall (LAAW) scar, without any prior cardiac intervention (Miyazawa et al. in J Cardiovasc Electrophysiol 2019; 30: 263-264). However, determining the target for terminating macroreentrant ATs is challenging. The mapping revealed a centrifugal pattern but did not fully elucidate the AT circuit. The reentrant mechanism of these ATs was confirmed using entrainment pacing. The earliest excitation site (EES) was traditionally selected as the ablation site, typically located in healthy tissue. However, our two cases provide new insights into AT termination, including the epicardial bridge across the endocardial LAAW scar, using minimum ablation points, without the need to ablate the healthy EES.
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Affiliation(s)
- Shota Tamura
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan.
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, 1-4-3 Asahimachi, Abenoku, Osaka, 545-8585, Japan
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Tamura S, Abe Y, Shimeno K, Hayashi Y, Naruko T, Fukuda D. Acute impact of atrial fibrillation on pacemaker lead-induced tricuspid regurgitation: Case report. J Cardiol Cases 2023; 28:210-212. [PMID: 38024106 PMCID: PMC10658346 DOI: 10.1016/j.jccase.2023.07.002] [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: 04/08/2023] [Revised: 05/30/2023] [Accepted: 07/12/2023] [Indexed: 12/01/2023] Open
Abstract
We report a case of worsening lead-induced tricuspid regurgitation (TR) after new-onset atrial fibrillation (AF) evaluated using three-dimensional (3D) transthoracic echocardiography (TTE) from admission through TR improvement. An 84-year-old man experienced worsening lead-induced TR with new-onset AF, acutely resulting in low output syndrome. Less invasive interventions, such as rhythm control therapy and diuretics administration worked effectively. However, 3DTTE revealed consistent restricted motion of the septal leaflet with lead impingement. Right heart dilatation due to AF and worsened TR led to incomplete closure of other leaflets and tricuspid annular dilatation, which caused further deterioration of the TR. According to the course of our case, new-onset AF can cause acute worsening of lead-induced TR and low output syndrome in patients with cardiac implantable electronic devices (CIED). Our findings emphasize the importance of understanding the TR etiology in patients with CIED, which may prevent unnecessary CIED lead extraction. Learning objective Lead-induced tricuspid regurgitation (TR) can acutely deteriorate after new onset of atrial fibrillation (AF). AF-induced deterioration of TR may not depend on restricted motion of a leaflet with lead impingement but on incomplete closure of other leaflets caused by right heart and tricuspid annular dilatation. Rhythm control therapy and diuretics administration may improve AF-induced deterioration of lead-induced TR, and should be considered before performing invasive lead extractions.
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Affiliation(s)
- Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
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Hayashi Y, Shimeno K, Tamura S, Naruko T, Fukuda D. 3830 lead extraction from two patients with left bundle branch area pacing. J Arrhythm 2023; 39:623-626. [PMID: 37560281 PMCID: PMC10407159 DOI: 10.1002/joa3.12886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 05/04/2023] [Accepted: 06/06/2023] [Indexed: 08/11/2023] Open
Affiliation(s)
- Yusuke Hayashi
- Department of CardiologyOsaka City General HospitalOsakaJapan
| | - Kenji Shimeno
- Department of CardiologyOsaka City General HospitalOsakaJapan
| | - Shota Tamura
- Department of CardiologyOsaka City General HospitalOsakaJapan
| | - Takahiko Naruko
- Department of CardiologyOsaka City General HospitalOsakaJapan
| | - Daiju Fukuda
- Department of Cardiovascular MedicineOsaka Metropolitan University Graduate School of MedicineOsakaJapan
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Shimeno K, Tamura S, Hayashi Y, Abe Y, Naruko T. Is narrowest QRS the best? A case of cardiac resynchronization therapy in a patient with left anterior fascicular block. Pacing Clin Electrophysiol 2023; 46:182-184. [PMID: 35993597 DOI: 10.1111/pace.14585] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 07/13/2022] [Accepted: 08/11/2022] [Indexed: 11/30/2022]
Abstract
The efficacy of cardiac resynchronization therapy (CRT) in patients with a narrow QRS duration has not been established. We present a patient with a narrow QRS duration and left anterior fascicular block in which CRT was effective. Left ventricular lead implantation at the optimal site and appropriately-timed left ventricular pacing (LVP) resulted in left ventricle reverse remodeling. Left ventricular dyssynchrony did not improve with LVP at a timing that resulted in narrower QRS than an intrinsic QRS duration. The optimization of LVP timing in CRT for patients with a narrow QRS duration is discussed.
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Affiliation(s)
- Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
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Kaneko Y, Fukuda K, Irie T, Shimizu H, Tamura S, Kobari T, Hasegawa H, Nakajima T, Ishii H. Electrophysiological characteristics and catheter ablation of atypical fast-slow atrioventricular nodal reentrant tachycardia using an inferolateral left atrial slow pathway. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Understandings of subtypes of atypical atrioventricular nodal reentrant tachycardia (AVNRT) using variants of slow pathway (SP) are still growing. Inferolateral (inf-lat-) left atrial (LA) SP is a rare variant extending into an inf-lat-LA along the mitral annulus (MA).
Purpose
To characterize an unknown subtype of atypical fast-slow (F/S-) AVNRT using an inf-lat-LA-SP as a retrograde limb (inf-lat-LA-F/S-AVNRT).
Methods
This Japanese multicenter retrospective study enrolled 4 patients of inf-lat-LA-F/S-AVNRT that was characterized by the earliest site of atrial activation during tachycardia (EAA) between 3 and 6 o'clock along the MA. The diagnosis was made by an exclusion of AV reentrant tachycardia (AVRT) and atrial tachycardia (AT) according to the standard criteria and was confirmed by successful elimination of tachycardia and the inf-lat-LA-SP.
Results
Surface ECG during tachycardia revealed long RP appearance except one who had short RP due to a short conduction time across the inf-lat-LA-SP. During tachycardia, far-field LA activation preceding near-field activation of coronary sinus (CS) musculature was visible in the CS recording in 2. Retrograde conduction via the inf-lat-LA-SP with a decremental delay was consistently reproducible with ventricular stimulation in 2, 1 of whom had double atrial response, while it was always masked by the presence of a retrograde conduction via the fast pathway in 1 and a retrograde block at the lower common pathway in 1. An injection of a small dose of ATP transiently interrupted a retrograde conduction over the inf-lat-LA-SP, suggesting its ATP-sensitivity. Exclusion of AVRT was made by no resetting of tachycardia with left ventricular extrastimulus in 2 and VA dissociation during overdrive pacing of tachycardia in remaining 2. Exclusion of AT was made by V-A-V response after ventricular entrainment in 1 and termination without atrial capture by ventricular pacing in 2. Ablation of the right-sided SP was unsuccessful to eliminate the tachycardia, but ablation at or near the EAA by transseptal approach was successful to cure the tachycardia, associated with an elimination of a retrograde conduction over the inf-lat-LA-SP following a development of an accelerated junction rhythm in all. Low-frequency potentials preceding local atrial activation, consistent with a retrograde activation via the inf-lat-LA-SP were detected along the MA medial to the EAA in 1.
Conclusions
Differential diagnosis of tachycardia with the EAA in the inf-lat-LA and especially long RP appearance should include inf-lat-LA-F/S-AVNRT. Presumed arrhythmogenic substrate of the inf-lat-LA-SP seemed to be consistent with the remnant of embryogenic AV ring tissue in the electropharmacological and locational characteristics. Successful elimination of this AVNRT can be obtained by ablation of the inf-lat-LA-SP, but not of the right-sided SP.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Kaneko
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
| | - K Fukuda
- International University of Health and Welfare Hospital, Department of Cardiology , Nasushiobara , Japan
| | - T Irie
- Saitama Sekishinkai Hospita, Department of Cardiology , Sayama , Japan
| | - H Shimizu
- Saiseikai Niigata Hospital, Department of Cardiology , Niigata , Japan
| | - S Tamura
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
| | - T Kobari
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
| | - H Hasegawa
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
| | - T Nakajima
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
| | - H Ishii
- Gunma University Graduate School of Medicine, Maebashi , Gunma , Japan
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Shimeno K, Tamura S, Hayashi Y, Abe Y, Naruko T, Fukuda D. Reply to "Is left ventricular septal pacing enough clinically, or must left bundle branch be captured absolutely?". J Cardiovasc Electrophysiol 2022; 33:2234. [PMID: 36041215 DOI: 10.1111/jce.15663] [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] [Received: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022]
Abstract
We thank Drs Kailun Zhu and Qiang Li for their interest in our article and would like to reply to their interesting comment This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Daiju Fukuda
- Department of Internal Medicine and Cardiology, Osaka Metropolitan University, Osaka, Japan
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Shimeno K, Tamura S, Hayashi Y, Abe Y, Naruko T, Fukuda D. Achievement rate and learning curve of left bundle branch capture in left bundle branch area pacing procedure performed to demonstrate output-dependent QRS transition. J Cardiovasc Electrophysiol 2022; 33:2183-2191. [PMID: 35842801 DOI: 10.1111/jce.15627] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 02/28/2022] [Revised: 05/14/2022] [Accepted: 06/05/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Recently, output-dependent QRS transition was reported to be required to confirm left bundle branch (LBB) capture in LBB area pacing (LBBAP) procedure. This study aimed to evaluate the achievement rate and the learning curve of LBB capture in LBBAP procedure performed with the goal of demonstrating output-dependent QRS transition, and investigate predictors of LBB capture. METHODS AND RESULTS The LBBAP procedure was performed in 126 patients with bradyarrhythmia. LBB capture was defined as a demonstration of output-dependent QRS transition. The following pacing definitions were used for evaluation: a) LBBAP, which met the previously reported LBBAP criteria, b) LBB pacing (LBBP), LBB capture was confirmed, and c) available LBBP, LBB threshold was clinically usable (<3 V at 0.4 ms). The learning curve was evaluated by division into three time-periods. The achievement rates of LBBAP, LBBP, and available LBBP were 88.1%, 41.2%, and 35.7%, respectively. The achievement rates of all three pacing definitions significantly increased with experience (p < 0.01), but the achievement rate of available LBBP was still 50% in the third period. As predictors of LBB capture, the interval between LBB-Purkinje potential and QRS onset ≥22 ms had high specificity of 98.3%, while R wave peak time in V6 <68 ms had insufficient sensitivity of 79% and specificity of 68%. CONCLUSION Even if LBB capture was aimed in LBBAP procedure, it was not easy to achieve, and there was a clear learning curve. Much of LBBAP may be left ventricular septal pacing that does not capture LBB. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Daiju Fukuda
- Department of Internal Medicine and Cardiology, Osaka City University Graduate School of Medicine, Osaka, Japan
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Tamura S, Shimeno* K, Abe Y, Naruko T. A right-to-left atrial shunt via an iatrogenic atrial septal defect after atrial fibrillation ablation induced by a percutaneous left ventricular assist device. Eur Heart J 2022; 43:839. [DOI: 10.1093/eurheartj/ehaa1027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 12/03/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shota Tamura
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka 534-0021, Japan
| | - Kenji Shimeno*
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka 534-0021, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka 534-0021, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka 534-0021, Japan
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Hayashi Y, Shimeno K, Tamura S, Naruko T. Severe sphincter of Oddi spasm after cryoballoon ablation: a case report of an unusual complication after atrial fibrillation ablation. Eur Heart J Case Rep 2022; 6:ytac082. [PMID: 35224440 PMCID: PMC8867818 DOI: 10.1093/ehjcr/ytac082] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/11/2021] [Accepted: 02/02/2022] [Indexed: 12/05/2022]
Abstract
Background Perioesophageal vagal nerve (VN) injury after atrial fibrillation (AF) ablation remains an important complication. The VN provides parasympathetic innervation to the majority of the abdominal organs—including the stomach and the sphincter of Oddi (SO)—and regulates smooth muscle contraction. We present an unusual case of SO spasm induced by VN injury after cryoballoon ablation (CBA). Case summary A 71-year-old woman presented to our institution with paroxysmal AF. The patient had a history of cholecystectomy and SO dysfunction. She had undergone CBA for AF. Immediately after the procedure, the patient developed epigastric pain. Computed tomography showed dilation of the intra- and extrahepatic bile ducts, with the diameter of the common bile duct measuring ∼15.6 mm. Blood tests on postoperative Day 1 revealed severely elevated aminotransferase levels (aspartate aminotransferase, 3156 U/L; alanine aminotransferase, 2084 U/L; lactate dehydrogenase, 2279 U/L; total bilirubin 1.7 mg/dL). Discussion It is known that VN denervation induces SO spasms. The right and left vagal trunks descend alongside the oesophagus, forming a perioesophageal plexus and innervating most of the gastrointestinal organs. In our case, SO spasm was induced as a result of the perioesophageal plexus injury caused by CBA. Underlying SO dysfunction and post-cholecystectomy also played an important role. Coupled with the absence of the gallbladder, which is the reservoir of bile juice and coordinator of SO, SO spasm caused severe elevation of the bile duct pressure. Care should be taken when performing AF ablation with regards to the stomach and the SO.
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Affiliation(s)
- Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka 534-0021, Japan
| | - Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka 534-0021, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka 534-0021, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka 534-0021, Japan
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Tamura S, Shimeno K, Nakatsuji K, Hayashi Y, Abe Y, Naruko T. Differences in the durability of left atrial posterior wall isolation based on the isolation process. J Interv Card Electrophysiol 2022; 65:45-51. [PMID: 34985641 DOI: 10.1007/s10840-021-01108-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/27/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE The best strategy for durable left atrial posterior wall isolation (PWI) after completion of pulmonary vein isolation (PVI) is not yet determined. This study aimed to examine the differences in the durability of PWI based on the isolation process and the predictors of the reconduction of PWI. METHODS Among the 221 patients (mean age, 65 ± 11 years) with consecutive non-paroxysmal atrial fibrillation (AF) who completed PVI and PWI, 50 patients undergoing repeat AF ablation were enrolled and divided into the following groups based on how PWI was achieved at the initial procedure: by only the first line on the roof and floor line (group A), by additional gap ablation to the first line or second liner ablation next to the first line (group B), and by adjunct ablation inside the PW revealing the earliest activation (group C). RESULTS Reconduction of PWI occurred in 24 of the 50 patients (48%). The durability of PWI in groups A, B, and C was 81% (17 of 21 patients), 75% (6 of 8 patients), and 14% (3 of 21 patients), respectively (p < 0.01). In a multivariate analysis, the ablation inside the PW for PWI was the independent predictor of the reconduction of PWI (p < 0.001). CONCLUSION PWI achieved by the ablation inside the PW resulted in a high rate of reconduction. It may be necessary to aim to achieve the PWI without ablating the inside of the PW to prevent reconduction.
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Affiliation(s)
- Shota Tamura
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan.
| | - Kenichi Nakatsuji
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima-Ku, Osaka, 534-0021, Japan
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Shimeno K, Tamura S, Hayashi Y, Abe Y, Naruko T. Bachmann's bundle-ridge related biatrial tachycardia with a long epicardial circuit. J Cardiovasc Electrophysiol 2021; 33:134-136. [PMID: 34845784 DOI: 10.1111/jce.15305] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/31/2021] [Accepted: 11/08/2021] [Indexed: 11/30/2022]
Abstract
Biatrial tachycardia (BiAT), involving Bachmann's bundle in the circuit, has sometimes been observed after mitral anterior line ablation. In this article, we present a case of BiAT, involving a long epicardial circuit, composed of Bachmann's bundle and the left atrial ridge (LAR). We discuss the optimal ablation technique for this tachycardia based on our experience in addition to the relationship between Bachmann's bundle and the LAR. Furthermore, the evaluation method for the mitral anterior block line is also discussed.
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Affiliation(s)
- Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
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Tamura S. Was the 'alternating head tilt' a 'positioning head tilt'? J Small Anim Pract 2021; 63:84. [PMID: 34786724 DOI: 10.1111/jsap.13447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 08/26/2021] [Accepted: 10/07/2021] [Indexed: 11/27/2022]
Affiliation(s)
- S Tamura
- Tamura Animal Clinic, Hiroshima, 731-5132, Japan
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13
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Shimeno K, Tamura S, Nakatsuji K, Hayashi Y, Abe Y, Naruko T. Characteristics and proposed mechanisms of QRS morphology observed during the left bundle branch pacing procedure. Pacing Clin Electrophysiol 2021; 44:1987-1994. [PMID: 34662435 DOI: 10.1111/pace.14382] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 10/04/2021] [Accepted: 10/11/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND In performing left bundle branch pacing (LBBP), various QRS morphologies are observed as the lead penetrates the ventricular septum (VS). This study aimed to evaluate these characteristics and infer the mechanism underlying each QRS morphology. METHODS In 19 patients who met the strict criteria for LBB capture, we classified the QRS morphologies observed during the LBBP procedure into seven patterns, the first five of which were determined by the depth of penetration: right ventricular septal pacing (RVSP), intraventricular septal pacing (IVSP1 and IVSP2), endocardial side of left ventricular septal pacing (LVSeP), nonselective LBBP (NS-LBBP), selective LBBP (S-LBBP), and NS-LBBP with anodal capture. The parameters of the QRS morphologies in these seven patterns were evaluated. RESULTS Among the first five patterns, stimulus-QRSend duration (s-QRSend) was the narrowest in IVSP1 rather than in NS-LBBP, and stimulus-to-peak of R wave in V6 (s-LVAT) was significantly shortened in two steps, from RVSP to IVSP1 (96 ± 11; 82 ± 8 ms, p < .01) and from LVSeP to NS-LBBP (76 ± 7; 60 ± 4 ms, p < .01). The late-R duration in V1 was significantly prolonged in the order of LVSeP, NS-LBBP, and S-LBBP (45 ± 7; 53 ± 10; 71 ± 15 ms, respectively, p < .01). CONCLUSIONS s-QRSend was the narrowest in IVSP1 rather than in NS-LBBP among the QRS morphologies observed during lead penetration through the VS. The prolonged late-R duration in V1 and abrupt shortening of the s-LVAT in V6 may help determine LBB capture during lead penetration.
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Affiliation(s)
- Kenji Shimeno
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Shota Tamura
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | | | - Yusuke Hayashi
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Yukio Abe
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
| | - Takahiko Naruko
- Department of Cardiology, Osaka City General Hospital, Osaka, Japan
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Kaneko Y, Nakajima T, Tamura S, Hasegawa H, Kobari T, Nagashima K. Fast-slow atrioventricular nodal reentrant tachycardia phenotype mimicking the slow-slow type. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0599] [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
Fast-slow (F/S-) atrioventricular (AV) nodal reentrant tachycardia (AVNRT) is characterized by a short atrio-His (AH) interval and the earliest site of atrial activation (EAA) in the proximal coronary sinus (EAA-CS), while slow-slow (S/S-) AVNRT presents a long AH interval and EAA-CS. Those intracardiac appearances are initial indicators for making a diagnosis.
Purpose
To identify an unknown phenotype of F/S-AVNRT.
Methods
Among 46 consecutive patients with F/S-AVNRT, 6 patients (1 man, age 59±9) had an apparent but not typical (pseudo-) S/S-AVNRT during an electrophysiologic study. In 2 patients, pseudo-S/S-AVNRT was clinically documented.
Results
In all 6 patients, the diagnosis of F/S-AVNRT was made by an exclusion of atrial tachycardia with findings of 1) a V-A-V response following ventricular entrainment or 2) termination without atrial capture by ventricular pacing, and an exclusion of AV reentrant tachycardia with a ventriculoatrial dissociation during an initial (so-called QRS transition) zone of ventricular entrainment. An initial A-A-V activation sequence on atrial induction of F/S-AVNRT observed in 1 patient and Wenckebach-type AV block during ongoing F/S-AVNRT developing in 3 patients suggested the presence of the lower common pathway (LCP). Like the typical S/S-AVNRT, pseudo-S/S-AVNRT was induced with atrial stimulation after a jump in the AH interval or double ventricular response. However, in all patients, the pseudo-S/S-AVNRT transited to F/S-AVNRT following AV block in a single cycle and/or pseudo-S/S-AVNRT transited from spontaneously or triggered by atrial contractions. Importantly, on these transitions, the atrial cycle length (CL) and EAA-CS remained unchanged, that is, the atrial CL of S/S-AVNRT was almost identical to that of F/S-AVNRT, suggesting that the essential circuit of both tachycardias was identical. Actually, both tachycardias were cured by ablation at a single site in the traditional slow pathway (SP). Collectively, the pseudo-S/S-AVNRT was diagnosed as another phenotype of F/S-AVNRT accompanied by sustained antegrade conduction via another bystander (likely the left-sided or superior) SP breaking through the His bundle owing to the repetitive antegrade block at the LCP occurring by linking phenomenon, thus representing a long AH interval during the ongoing F/S-AVNRT. When the antegrade conduction is blocked at the bystander SP during the pseudo-S/S-AVNRT, releasing the linking phenomenon, the subsequent antegrade conduction reach the His-bundle via the fast pathway, thus returning to F/S-AVNRT.
Conclusions
An unknown, but not rare F/S-AVNRT phenotype exists that apparently mimics the typical S/S-AVNRT and is also an unknown subtype of apparent S/S-AVNRT. The presence of this pseudo-S/S-AVNRT suggests the limitation of classifying types of AVNRT based on AH and HA intervals during tachycardia. Understandings of this phenotype can advance a diagnosis of atypical AVNRT with multiple phenotypes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Kaneko
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - T Nakajima
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - S Tamura
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - H Hasegawa
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - T Kobari
- Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - K Nagashima
- Nihon University School of Medicine, Division of Cardiology, Department of Medicine, Tokyo, Japan
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Yamasaki M, Takiguchi S, Omori T, Hirao M, Imamura H, Fujitani K, Tamura S, Akamaru Y, Kishi K, Fujita J, Hirao T, Demura K, Matsuyama J, Takeno A, Ebisui C, Takachi K, Takayama O, Fukunaga H, Okada K, Adachi S, Fukuda S, Matsuura N, Saito T, Takahashi T, Kurokawa Y, Yano M, Eguchi H, Doki Y. Multicenter prospective trial of total gastrectomy versus proximal gastrectomy for upper third cT1 gastric cancer. Gastric Cancer 2021; 24:535-543. [PMID: 33118118 DOI: 10.1007/s10120-020-01129-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 07/10/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND The appropriate surgical procedure for patients with upper third early gastric cancer is controversial. We compared total gastrectomy (TG) with proximal gastrectomy (PG) in this patient population. METHODS A multicenter, non-randomized trial was conducted, with patients treated with PG or TG. We compared short- and long-term outcomes between these procedures. RESULTS Between 2009 and 2014, we enrolled 254 patients from 22 institutions; data from 252 were included in the analysis. These 252 patients were assigned to either the PG (n = 159) or TG (n = 93) group. Percentage of body weight loss (%BWL) at 1 year after surgery, i.e., the primary endpoint, in the PG group was significantly less than that of the TG group (- 12.8% versus - 16.9%; p = 0.0001). For short-term outcomes, operation time was significantly shorter for PG than TG (252 min versus 303 min; p < 0.0001), but there were no group-dependent differences in blood loss and postoperative complications. For long-term outcomes, incidence of reflux esophagitis in the PG group was significantly higher than that of the TG group (14.5% versus 5.4%; p = 0.02), while there were no differences in the incidence of anastomotic stenosis between the two (5.7% versus 5.4%; p = 0.92). Overall patient survival rates were similar between the two groups (3-year survival rates: 96% versus 92% in the PG and TG groups, respectively; p = 0.49). CONCLUSIONS Patients who underwent PG were better able to control weight loss without worsening the prognosis, relative to those in the TG group. Optimization of a reconstruction method to reduce reflux in PG patients will be important.
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Affiliation(s)
- Makoto Yamasaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan.
| | - S Takiguchi
- Department of Gastroenterological Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - T Omori
- Department of Surgery, Osaka International Cancer Institute, Osaka, Japan
| | - M Hirao
- Department of Surgery, National Hospital Organization, Osaka National Hospital, Osaka, Japan
| | - H Imamura
- Department of Surgery, Toyonaka Municipal Hospital, Osaka, Japan
| | - K Fujitani
- Department of Surgery, Osaka General Medical Center, Osaka, Japan
| | - S Tamura
- Department of Surgery, Yao Municipal Hospital, Osaka, Japan
| | - Y Akamaru
- Department of Surgery, Ikeda Municipal Hospital, Osaka, Japan
| | - K Kishi
- Department of Surgery, Osaka Police Hospital, Osaka, Japan
| | - J Fujita
- Department of Surgery, Sakai City Medical Center, Osaka, Japan
| | - T Hirao
- Department of Surgery, Japan Community Health Care Organization Osaka Hospital, Osaka, Japan
| | - K Demura
- Department of Surgery, Japan Community Health Care Organization Osaka Hospital, Osaka, Japan
| | - J Matsuyama
- Department of Surgery, Higashiosaka City Medical Center, Osaka, Japan
| | - A Takeno
- Department of Surgery, Kansai Rosai Hospital, Hyogo, Japan
| | - C Ebisui
- Department of Surgery, Suita Municipal Hospital, Osaka, Japan
| | - K Takachi
- Department of Surgery, Kinki Central Hospital, Hyogo, Japan
| | - O Takayama
- Department of Surgery, Saiseikai Senri Hospital, Osaka, Japan
| | - H Fukunaga
- Department of Surgery, Itami Municipal Hospital, Osaka, Japan
| | - K Okada
- Department of Surgery, Hyogo Prefectural Nishinomiya Hospital, Hyogo, Japan
| | - S Adachi
- Department of Surgery, Nishinomiya Municipal Central Hospital, Hyogo, Japan
| | - S Fukuda
- Department of Surgery, Kindai University Nara Hospital, Osaka, Japan
| | - N Matsuura
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
| | - T Saito
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
| | - T Takahashi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
| | - Y Kurokawa
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
| | - M Yano
- Department of Surgery, Suita Municipal Hospital, Osaka, Japan
| | - H Eguchi
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
| | - Y Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, 2-2-E2, Yamadaoka, Suita, Osaka, 565-0879, Japan
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16
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Tamura S, Yoshiyama T, Doi A, Yoshiyama M. Absence of shock therapy related to improper sensing of noise on the defibrillation test during subcutaneous implantable cardioverter-defibrillator implantation: a case report. Eur Heart J Case Rep 2021; 4:1-6. [PMID: 33447710 PMCID: PMC7793213 DOI: 10.1093/ehjcr/ytaa469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/27/2020] [Accepted: 11/09/2020] [Indexed: 11/21/2022]
Abstract
Background Subcutaneous implantable cardioverter–defibrillator (S-ICD) represents an efficient alternative to transvenous ICD in patients who do not require pacing. The intraoperative defibrillation test (DFT) is recommended during S-ICD implantation to confirm appropriate sensing and successful 65-J termination of induced ventricular fibrillation (VF). However, few cases of oversensing of noise inhibiting therapies have been reported. Case summary We report the case of a 50-year-old man who underwent S-ICD implantation for secondary prevention of sudden cardiac death. Immediately after S-ICD implantation, VF was induced using a 50-Hz burst; however, shock was not delivered owing to sustained noise on the electrogram in the primary vector. Therefore, an external rescue shock was needed at 150 J. We changed the sensing vector from primary to secondary and performed a second DFT. The S-ICD could deliver an appropriate shock and was able to successfully terminate VF without noise markers in the secondary vector. During the second DFT, one back-up pacing was delivered after the shock; the sensing vector then automatically switched from the secondary to the alternate vector. However, noise was observed in the alternate vector despite sinus rhythm restoration. Discussion The present case demonstrated that noise was recorded in two different vectors during DFT, possibly supporting the hypothesis that the muscle spasm of the diaphragm induced by the 50-Hz burst causes oversensing of noise by the S-ICD.
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Affiliation(s)
- Shota Tamura
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Tomotaka Yoshiyama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Atsushi Doi
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Minoru Yoshiyama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan
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17
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Yamamoto S, Satoh I, Kakimoto M, Fujii M, Matsui M, Takahashi Y, Mirokuin K, Ran S, Tamura S, Hirohata S, Watanabe S. The novel liver x receptor beta agonist, ouabagenin, prevent arterial lipid deposition in SHRSP5/DMCR rat. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.429] [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: 10/22/2022]
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18
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Yamamoto S, Satoh I, Kakimoto M, Fujii M, Matsui M, Takahashi Y, Mirokuin K, Ran S, Tamura S, Hirohata S, Watanabe S. The novel liver X receptor beta agonist, ouabagenin, prevent arterial lipid deposition in SHRSP5/Dmcr rat. Atherosclerosis 2020. [DOI: 10.1016/j.atherosclerosis.2020.10.431] [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: 10/22/2022]
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Tamura S, Haruyama S, Ogami A, Yokoyama A, Okuno T, Kubono Y, Takakura K, Esumi S. Health guidance for prevention of lifestyle-related diseases using health-related mobile applications. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.582] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Issue
Lifestyle modifications are essential for the prevention of lifestyle-related diseases such as hypertension, hyperlipidaemia, and type 2 diabetes. Healthcare providers in Japan are required to use information and communications technologies (ICT), such as health-related mobile applications (mHealth apps), in health guidance.
Description of the Problem
To understand the results of and issues in health guidance, two searches were conducted to identify the domains of health guidance provided using ICT. We searched the PubMed and Japan Medical Abstracts Society databases to identify articles published from 2000-2018. The first search identified frameworks of health guidance provided using ICT. The second search identified primary studies about using mHealth apps published between 2000 and 2018. The sample comprised 22 unique programs from 38 primary studies. The following research questions were explored: 1) What is the purpose of using the mHealth app?
2) Is there a significant difference in the effect of using the mHealth app instead of face-to-face communication?
Results
The mHealth app was used to enhance convenience and to improve or modify lifestyle. The latter included self-monitoring, typing health information, providing knowledge, sharing information, providing encouragement and praise, and correction of action plans. Some positive effects were observed, including compensating for insufficient information, enhancing self-management, and improving degrees of satisfaction of users. Only two programs did not report a significant difference in the effect of using the mHealth app as compared to face-to-face communication.
Lessons
This review showed that the frequency of typing information about diet and exercise appeared to be related to the prevention of primary lifestyle-related diseases and the improvement of self-management behaviour.
Key messages
Use of the mHealth app for providing health guidance might enhance continuous support for self-monitoring and self-management behaviour. Use the mHealth app for providing encouragement and praise might promote a smooth conversation, which in turn would facilitate appropriate self-management behaviour.
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Affiliation(s)
- S Tamura
- Academic Assembly, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - S Haruyama
- Faculty of Nursing, Jichi Medical University, Tochigi, Japan
| | - A Ogami
- Ogami Occupational Health Consulting Office, Tokyo, Japan
| | - A Yokoyama
- Faculty of Nursing, Jichi Medical University, Tochigi, Japan
| | - T Okuno
- Nippon Express Corporation, Toyama, Japan
| | - Y Kubono
- Faculty of Nursing, Niigata College of Nursing, Niigata, Japan
| | - K Takakura
- Academic Assembly, Faculty of Medicine, University of Toyama, Toyama, Japan
| | - S Esumi
- Faculty of Nursing, Jichi Medical University, Tochigi, Japan
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20
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Mashimo T, Tamura S, Yamamoto K, Kelgenbaeva Z, Ma W, Tokuda M, Koinuma M, Isobe H, Yoshiasa A. Synthesis of Pd–Ru solid-solution nanoparticles by pulsed plasma in liquid method. RSC Adv 2020; 10:13232-13236. [PMID: 35492108 PMCID: PMC9051462 DOI: 10.1039/c9ra10003b] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/08/2020] [Indexed: 01/07/2023] Open
Abstract
We have synthesized solid-solution nanoparticles (Pd : Ru = 1 : 3, 1 : 1 and 3 : 1) in an immiscible Pd–Ru system by the pulsed plasma in liquid method using Pd–Ru mixture bulk electrodes.
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Affiliation(s)
- Tsutomu Mashimo
- Institute of Pulsed Power Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Shota Tamura
- Institute of Pulsed Power Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Kenta Yamamoto
- Institute of Pulsed Power Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | | | - Weijan Ma
- Institute of Pulsed Power Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Makoto Tokuda
- Institute of Pulsed Power Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Michio Koinuma
- Faculty of Engineering
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Hiroshi Isobe
- Faculty of Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
| | - Akira Yoshiasa
- Faculty of Science
- Kumamoto University
- Kumamoto 860-0862
- Japan
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21
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Tamura S, Doi A, Matsuo M, Katayama H, Yoshiyama T, Tatsumi H, Izumiya Y, Yoshiyama M. Prognostic value of high-sensitive troponin T for predicting cardiovascular events after atrial fibrillation ablation. J Cardiovasc Electrophysiol 2019; 30:1475-1482. [PMID: 31192482 DOI: 10.1111/jce.14032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/27/2019] [Accepted: 06/10/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES This study aimed to evaluate the utility of high-sensitive troponin T (hs-TnT) for predicting AF recurrence and major adverse cardiovascular events (MACE) after AF ablation. METHODS AND RESULTS A total of 227 consecutive patients with AF (mean age, 66 ± 10 years; persistent AF, n = 98) who underwent an initial ablation were enrolled. We measured hs-TnT before AF ablation and divided the patients into three groups according to the hs-TnT level: low, lesser than or equal to 0.005 µg/L (n = 54); medium, 0.006-0.013 µg/L (n = 127); and high, greater than or equal to0.014 µg/L (n = 46). We evaluated the composite endpoint of AF recurrence or MACE (including death, stroke, acute coronary syndrome, and heart failure hospitalization) after the ablation. The median hs-TnT level was 0.008 µg/L. The values of chronic kidney disease prevalence, CHA2 DS2 -VASc score, B-type natriuretic peptide level, and left atrial diameter were the highest in the high hs-TnT group among the three groups. During a mean follow-up of 15 ± 8 months, AF recurrence and MACE occurred in 56 (25%) and 9 (4%) patients, respectively. The high hs-TnT group had the highest incidence of AF recurrence and MACE among the three groups (high: 39% and 15%, medium: 22% and 2%, and low: 19% and 0%, respectively; log-rank P < .05). In multivariate analysis, hs-TnT greater than or equal to 0.014 µg/L and persistent AF were independent predictors of the composite endpoint. CONCLUSION Hs-TnT may be a useful marker for predicting AF recurrence or MACE after AF ablation.
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Affiliation(s)
- Shota Tamura
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Atsushi Doi
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masanori Matsuo
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hisashi Katayama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tomotaka Yoshiyama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroaki Tatsumi
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yasuhiro Izumiya
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Minoru Yoshiyama
- Department of Cardiovascular Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
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22
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Kanno M, Miura K, Masaki Y, Tsujimura H, Iino M, Takizawa J, Maeda Y, Yamamoto K, Tamura S, Yoshida A, Yagi H, Yoshida I, Kitazume K, Masunari T, Choi I, Kakinoki Y, Suzuki R, Yoshino T, Nakamura S, Yoshida T. CONSOLIDATION THERAPY USING 90
Y-IBRITUMOMAB TIUXETAN AFTER BENDAMUSTINE AND RITUXIMAB FOR RELAPSED FOLLICULAR LYMPHOMA; A MULTICENTER, PHASE II STUDY (BRiZ2012). Hematol Oncol 2019. [DOI: 10.1002/hon.61_2631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- M. Kanno
- Oncology Center; Nara Medical University Hospital; Kashihara Japan
| | - K. Miura
- Division of Hematology and Rheumatology; Nihon University School of Medicine; Tokyo Japan
| | - Y. Masaki
- Department of Hematology and Immunology; Kanazawa Medical University; Ishikawa Japan
| | - H. Tsujimura
- Division of Medical Oncology; Chiba Cancer Center; Chiba Japan
| | - M. Iino
- Department of Medical Oncology; Yamanashi Prefectural Central Hospital; Kofu Japan
| | - J. Takizawa
- Department of Hematology; Endocrinology and Metabolism, Niigata University Faculty of Medicine; Niigata Japan
| | - Y. Maeda
- Department of Hematology and Oncology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
| | - K. Yamamoto
- Department of Hematology; Okayama City Hospital; Okayama Japan
| | - S. Tamura
- Department of Hematology/Oncology; Kinan Hospital; Tanabe Japan
| | - A. Yoshida
- Department of Hematology; Toyama Prefectural Central Hospital; Toyama Japan
| | - H. Yagi
- Department of Hematology and Oncology; Nara Prefecture General Medical Center; Nara Japan
| | - I. Yoshida
- Department of Hematologic Oncology; National Hospital Organization, Shikoku Cancer Center; Matsuyama Japan
| | - K. Kitazume
- Department of Hematology; Showa General Hospital; Kodaira Japan
| | - T. Masunari
- Department of Infectious Diseases; Chugoku Central Hospital; Fukuyama Japan
| | - I. Choi
- Department of Hematology; National Hospital Organization, Kyushu Cancer Center; Fukuoka Japan
| | - Y. Kakinoki
- Department of Hematology; Asahikawa City Hospital; Ashikawa Japan
| | - R. Suzuki
- Department of Oncology/Hematology, Innovative Cancer Center; Shimane University Hospital; Izumo Japan
| | - T. Yoshino
- Department of Pathology; Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences; Okayama Japan
| | - S. Nakamura
- Department of Pathology and Biological Response; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - T. Yoshida
- Member; Society of Lymphoma Treatment in Japan (SoLT-J); Kanazawa Japan
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23
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Kitano Y, Wakimoto S, Tamura S, Kubota K, Domon Y, Arakawa N, Saito M, Sava B, Buisson B. Effects of mirogabalin, a novel ligand for the α₂δ subunit of voltage-gated calcium channels, on N-type calcium channel currents of rat dorsal root ganglion culture neurons. Pharmazie 2019; 74:147-149. [PMID: 30961679 DOI: 10.1691/ph.2019.8833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Mirogabalin, which is a novel ligand for the α₂δ subunit of voltage-gated calcium channels, is being developed for treating neuropathic pain including diabetic peripheral neuropathy and postherpetic neuralgia. Mirogabalin possesses unique α₂δ subunit binding characteristics and has potent and long-lasting analgesic effects in neuropathic pain models. In the present study, we investigated the effects of mirogabalin on N-type calcium channel currents of the rat dorsal root ganglion (DRG) culture neurons using the whole-cell patch clamp technique. Small or medium DRG neurons were isolated from Sprague-Dawley rats and were incubated for 20 to 24 h with mirogabalin or pregabalin. The DRG neurons were depolarised from a holding potential of -40 mV to +40 mV in steps of 10 mV for 220 ms, and elicited N-type calcium channel currents were recorded. The N-type calcium channel currents were verified by sensitivity to ω-conotoxin GVIA, a selective N-type calcium channel blocker. Mirogabalin inhibited the calcium channel currents of rat DRG neurons at 50 μM, and pregabalin inhibited them at 200 μM. Mirogabalin and pregabalin showed significant differences in the peak current densities at depolarisation to -20 and -10 mV when compared with that shown by the vehicle control. In conclusion, mirogabalin inhibits N-type calcium channel currents in rat DRG culture neurons. The potent and long-lasting analgesic effects of mirogabalin are thought to be associated with its potent and selective binding to α₂δ-1 subunits and following functional inhibition of calcium channel currents.
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24
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Tamura S, Mashimo T, Yamamoto K, Kelgenbaeva Z, Ma W, Kang X, Koinuma M, Isobe H, Yoshiasa A. Synthesis of Pd-Fe System Alloy Nanoparticles by Pulsed Plasma in Liquid. Nanomaterials (Basel) 2018; 8:nano8121068. [PMID: 30567370 PMCID: PMC6315479 DOI: 10.3390/nano8121068] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 12/12/2018] [Indexed: 11/23/2022]
Abstract
We synthesized Pd-Fe series nanoparticles in solid solution using pulsed plasma in liquid with Pd-Fe bulk mixture electrodes. The Pd-Fe atomic percent ratios were 1:3, 1:1, and 3:1, and the particle size was measured to be less than 10 nm by high-resolution transmission electron microscopy (HR-TEM). The nanoparticles showed face-centered cubic structure. The lattice parameter increased with increasing Pd content and followed Vegard’s law, and energy-dispersive X-ray spectra were consistent with the ratios of the starting samples, which showed a solid solution state. The solid solution structure and local structure were confirmed by HR-TEM and X-ray absorption fine structure.
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Affiliation(s)
- Shota Tamura
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Tsutomu Mashimo
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Kenta Yamamoto
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Zhazgul Kelgenbaeva
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Weijan Ma
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Xuesong Kang
- Institute of Pulsed Power Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Michio Koinuma
- Faculty of Engineering, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Hiroshi Isobe
- Faculty of Science, Kumamoto University, Kumamoto 860-0862, Japan.
| | - Akira Yoshiasa
- Faculty of Science, Kumamoto University, Kumamoto 860-0862, Japan.
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Kanno M, Miura K, Masaki Y, Tsujimura H, Iino M, Takizawa J, Maeda Y, Yamamoto K, Tamura S, Yoshida A, Yagi H, Yoshida I, Kitazume K, Masunari T, Choi I, Kakinoki Y, Yoshino T, Nakamura S, Yoshida T. Bendamustine and rituximab followed by 90Y-ibritumomab tiuxetan for relapsed follicular lymphoma: A preliminary analysis of a multicenter, prospective phase II study (BRiZ2012). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy286.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Sato Y, Mizusawa J, Nakamura K, Fukagawa T, Katai H, Haruta S, Yamada M, Takagi M, Tamura S, Yoshimura T, Inada T, Hirabayashi N, Wada I, Kodera Y, Tokunaga M, Yoshikawa T, Boku N, Sano T, Sasako M, Terashima M. Diagnosis of invasion depth in resectable advanced gastric cancer for neoadjuvant chemotherapy: An exploratory analysis of JCOG1302A. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy282.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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27
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Shinoda N, Mori M, Tamura S, Korosue K, Kose S, Kohmura E. Three-dimensional shaping technique for coil placement using the steam-shaped microcatheter for ruptured blood blister-like aneurysm. Neurochirurgie 2018; 64:216-218. [PMID: 29907359 DOI: 10.1016/j.neuchi.2018.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 02/21/2018] [Accepted: 04/13/2018] [Indexed: 11/28/2022]
Abstract
Treatment of blood blister-like aneurysm (BBA) is a challenge due to its unfavourable morphology, small size and the friable neck of BBA. In the management of ruptured BBA, coil placement can be achieved by stent-assisted coil embolisation. We propose to incorporate a new technique using a steam-shaped microcatheter to improve safety. A 59-year-old woman was transferred to our hospital and diagnosed with subarachnoid haemorrhage (SAH) due to a ruptured BBA of the left internal carotid artery (ICA) at the C2 portion. For coil embolisation, we selected the aneurysm sac using a three-dimensional shaping technique and the jailing method. Post-embolisation angiography revealed complete occlusion of the aneurysmal sac. For safe treatment and stability of BBA, the shape of the catheter tip and the distal portion of the microcatheter are two important factors to consider. The proposed technique could help resolve the problem of catheter shaping in the treatment of BBA.
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Affiliation(s)
- N Shinoda
- Department of Neurosurgery, Kosei Hospital, Kobe, Japan.
| | - M Mori
- Department of Neurosurgery, Kosei Hospital, Kobe, Japan
| | - S Tamura
- Department of Neurosurgery, Kosei Hospital, Kobe, Japan
| | - K Korosue
- Department of Neurosurgery, Kosei Hospital, Kobe, Japan
| | - S Kose
- Department of Neurosurgery, Kosei Hospital, Kobe, Japan
| | - E Kohmura
- Department of Neurosurgery, Kobe University Hospital, Kobe, Japan
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Sasaki T, Shirai T, Tsukiji N, Otake S, Tamura S, Ichikawa J, Osada M, Satoh K, Ozaki Y, Suzuki-Inoue K. Functional characterization of recombinant snake venom rhodocytin: rhodocytin mutant blocks CLEC-2/podoplanin-dependent platelet aggregation and lung metastasis. J Thromb Haemost 2018; 16:960-972. [PMID: 29488681 DOI: 10.1111/jth.13987] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 07/05/2017] [Indexed: 12/11/2022]
Abstract
Essentials We generated recombinant rhodocytin that could aggregate platelets via CLEC-2. Recombinant wild-type rhodocytin formed heterooctamer with four α- and β-subunits. Asp 4 in α-subunit of rhodocytin was required for binding to CLEC-2. Inhibitory mutant of rhodocytin blocked podoplanin-dependent hematogenous metastasis. SUMMARY Background Rhodocytin, a disulfide-linked heterodimeric C-type lectin from Calloselasma rhodostoma consisting of α-subunits and β-subunits, induces platelet aggregation through C-type lectin-like receptor 2 (CLEC-2). CLEC-2 is a physiological binding partner of podoplanin (PDPN), which is expressed on some tumor cell types, and is involved in tumor cell-induced platelet aggregation and tumor metastasis. Thus, modified rhodocytin may be a possible source of anti-CLEC-2 drugs for both antiplatelet and antimetastasis therapy. However, its molecular function has not been well characterized, because of the lack of recombinant rhodocytin that induces platelet aggregation. Objective To produce recombinant rhodocytin, in order to verify its function with mutagenesis, and to develop an anti-CLEC-2 drug based on the findings. Methods We used Chinese hamster ovary cells to express recombinant rhodocytin (wild-type [WT] and mutant), which was analyzed for induction/inhibition of platelet aggregation with light transmission aggregometry, the formation of multimers with blue native PAGE, and binding to CLEC-2 with flow cytometry. Finally, we investigated whether mutant rhodocytin could suppress PDPN-induced metastasis in an experimental lung metastasis mouse model. Results Functional WT] rhodocytin (αWTβWT) was obtained by coexpression of both subunits. Asp4 in α-subunits of rhodocytin was required for CLEC-2 binding. αWTβWT formed a heterooctamer similarly to native rhodocytin. Moreover, an inhibitory mutant of rhodocytin (αWTβK53A/R56A), forming a heterotetramer, bound to CLEC-2 without inducing platelet aggregation, and blocked CLEC-2-PDPN interaction-dependent platelet aggregation and experimental lung metastasis. Conclusion These findings provide molecular characterization information on rhodocytin, and suggest that mutant rhodocytin could be used as a therapeutic agent to target CLEC-2.
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Affiliation(s)
- T Sasaki
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Kofu, Japan
| | - T Shirai
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Kofu, Japan
| | - N Tsukiji
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Kofu, Japan
| | | | - S Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - J Ichikawa
- Department of Orthopedic Surgery, Faculty of Medicine, University of Yamanashi, Kofu, Japan
| | - M Osada
- School of Medical Technology, Gunma Paz University, Takasaki, Japan
| | - K Satoh
- Division of Laboratory Medicine, University of Yamanashi Hospital, Kofu, Japan
| | - Y Ozaki
- Fuefuki Central Hospital, Fuefuki, Japan
| | - K Suzuki-Inoue
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Kofu, Japan
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Tamura S, Suga Y, Tanamura M, Murata-Kawakami M, Takagi Y, Hottori Y, Kakihara M, Suzuki S, Takagi A, Kojima T. Optimisation of antithrombin resistance assay as a practical clinical laboratory test: Development of prothrombin activator using factors Xa/Va and automation of assay. Int J Lab Hematol 2018; 40:312-319. [PMID: 29436777 DOI: 10.1111/ijlh.12786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/11/2018] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Antithrombin resistance (ATR) is a novel thrombotic risk in abnormal prothrombins. A manual ATR assay using Oxyuranus scutellatus (Ox) venom as a prothrombin activator was established for detecting antithrombin-resistant prothrombin. However, this assay was limited because of Ox snake venom availability and its throughput capacity. Here, we have improved the ATR assay using bovine factors Xa and Va (FXa/Va) as prothrombin activators and have optimised assay conditions for an automated instrument (ACL TOP 500). METHODS Diluted plasma was incubated with a prothrombin activator mix (phospholipids, CaCl2 , and bovine FXa/Va), followed by inactivation with antithrombin for 10, 20 and 30 minutes. We added a chromogenic substrate S-2238, and assessed changes in absorbance/min at 405 nm. We also adapted assay conditions for ACL TOP 500. RESULTS Optimum conditions for FXa/Va treatment were 6.25% phospholipids, 5 mM CaCL2 , 0.01 μg/mL FXa and 0.1 μg/mL FVa. ATR assay kinetics with the FXa/Va activator was comparable with that with the Ox activator in heterozygous reconstituted plasma with the recombinant wild-type or antithrombin-resistant prothrombin. Using ACL TOP 500, optimum conditions for the FXa/Va treatment were 10.0% phospholipids, 5 mM CaCl2 , 0.02 μg/mL FXa and 0.2 μg/mL FVa. The automated ATR assay with the FXa/Va activator demonstrated good detectability for antithrombin-resistant prothrombin in plasma from a heterozygous carrier with prothrombin Yukuhashi or Belgrade. CONCLUSION We optimised the ATR assay with the FXa/Va activator and adapted the assay for ACL TOP 500; the assay showed the ability to clearly detect antithrombin-resistant prothrombin in manual and automated procedures.
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Affiliation(s)
- S Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Suga
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Tanamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Murata-Kawakami
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Y Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Japan Society for the Promotion of Science, Tokyo, Japan
| | - Y Hottori
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Kakihara
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Suzuki
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Suzuki S, Nakamura Y, Suzuki N, Yamazaki T, Takagi Y, Tamura S, Takagi A, Kanematsu T, Matsushita T, Kojima T. Combined deficiency of factors V and VIII by chance coinheritance of parahaemophilia and haemophilia A, but not by mutations of either LMAN1 or MCFD2, in a Japanese family. Haemophilia 2017; 24:e13-e16. [PMID: 29082580 DOI: 10.1111/hae.13360] [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] [Accepted: 09/19/2017] [Indexed: 11/26/2022]
Affiliation(s)
- S Suzuki
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Nakamura
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Suzuki
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan
| | | | - Y Takagi
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Tamura
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - A Takagi
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Kanematsu
- Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan
| | - T Matsushita
- Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan.,Department of Clinical Laboratory, Nagoya University Hospital, Nagoya, Japan
| | - T Kojima
- Department of Pathophysiological Laboratory Science, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Tone T, Fujisawa N, Seki Y, Iida H, Tachikawa K, Sugihara M, Minato A, Nishio S, Yamamoto T, Kitamura K, Ueda K, Saito S, Shimada R, Matsuda Y, Naruse Y, Shimamoto S, Tamura S, Yoshikawa M, Tomabechi K. Conceptual Design of Fusion Experimental Reactor(FER). ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst83-a22924] [Citation(s) in RCA: 17] [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] [Indexed: 11/12/2022]
Affiliation(s)
- T. Tone
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - N. Fujisawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Seki
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - H. Iida
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tachikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Sugihara
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - A. Minato
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Nishio
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - T. Yamamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Kitamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Ueda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Saito
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - R. Shimada
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Matsuda
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - Y. Naruse
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Shimamoto
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - S. Tamura
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - M. Yoshikawa
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
| | - K. Tomabechi
- Japan Atomic Energy Research Institute Naka-machi, Naka-gun, Ibaraki-ken, Japan (02929) 5-3111
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Shirai T, Inoue O, Tamura S, Tsukiji N, Sasaki T, Endo H, Satoh K, Osada M, Sato-Uchida H, Fujii H, Ozaki Y, Suzuki-Inoue K. C-type lectin-like receptor 2 promotes hematogenous tumor metastasis and prothrombotic state in tumor-bearing mice. J Thromb Haemost 2017; 15:513-525. [PMID: 28028907 DOI: 10.1111/jth.13604] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [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: 03/22/2016] [Indexed: 01/01/2023]
Abstract
Essentials The role of C-type lectin-like receptor-2 (CLEC-2) in cancer progression is unclear. CLEC-2-depleted mouse model is generated by using a rat anti-mouse CLEC-2 monoclonal antibody. CLEC-2 depletion inhibits hematogenous tumor metastasis of podoplanin-expressing B16F10 cells. CLEC-2 depletion prolongs cancer survival by suppressing thrombosis and inflammation. SUMMARY Background C-type lectin-like receptor 2 (CLEC-2) is a platelet activation receptor of sialoglycoprotein podoplanin, which is expressed on the surface of certain types of tumor cells. CLEC-2-podoplanin interactions facilitate hematogenous tumor metastasis. However, direct evidence of the role of CLEC-2 in hematogenous metastasis and cancer progression is lacking. Objective and methods We generated immunological CLEC-2-depleted mice by using anti-mouse CLEC-2 monoclonal antibody 2A2B10 and investigated whether CLEC-2 promoted hematogenous tumor metastasis and tumor growth and exacerbated the prognosis of mice bearing podoplanin-expressing B16F10 melanoma cells. Results Our results showed that hematogenous metastasis was significantly inhibited in CLEC-2-depleted mice. B16F10 cells co-cultured with wild-type platelets, but not with CLEC-2-deficient platelets, showed increased proliferation. However, B16F10 cell proliferation was not inhibited in CLEC-2-depleted mice. Histological analysis showed that thrombus formation in tumor vessels was significantly inhibited and functional vessel density was significantly increased in CLEC-2-depleted mice. These data suggest that CLEC-2 deficiency may inhibit thrombus formation in tumor vessels and increase the density of functional vessels, thus improving oxygen and nutrient supply to tumors, indirectly promoting tumor proliferation. Furthermore, the overall survival of CLEC-2-depleted mice was significantly prolonged, which may be due to the suppression of thrombus formation in the lungs and subsequent inhibition of systemic inflammation and cachexia. Conclusions These data provide a rationale for the targeted inhibition of CLEC-2 as a new strategy for preventing hematogenous tumor metastasis and for inhibiting cancer-related thromboembolism.
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Affiliation(s)
- T Shirai
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - O Inoue
- Infection Control Office, Yamanashi University Hospital, Yamanashi, Japan
| | - S Tamura
- Department of Pathophysiological Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Tsukiji
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - T Sasaki
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - H Endo
- Department of Food Science and Nutrition, School of Human Cultures, University of Shiga Prefecture, Shiga, Japan
| | - K Satoh
- Division of Laboratory Medicine, Yamanashi University Hospital, Yamanashi, Japan
| | - M Osada
- Division of Laboratory Medicine, Yamanashi University Hospital, Yamanashi, Japan
- School of Medical Technology, Faculty of Health Science, Gumma Paz College, Takasaki, Japan
| | - H Sato-Uchida
- Department of Clinical Nursing, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - H Fujii
- First Department of Surgery, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - Y Ozaki
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
| | - K Suzuki-Inoue
- Department of Clinical and Laboratory Medicine, Faculty of Medicine, University of Yamanashi, Yamanashi, Japan
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Ito K, Akamatsu N, Togashi J, Tamura S, Sakamoto Y, Hasegawa K, Kokudo N. Outflow Reconstruction Using Cryopreserved Homologous Venous Grafts in Living Donor Liver Transplantation. Transplant Proc 2017; 49:109-114. [DOI: 10.1016/j.transproceed.2016.11.002] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Yamasaki M, Yasuda T, Yano M, Hirao M, Kobayashi K, Fujitani K, Tamura S, Kimura Y, Miyata H, Motoori M, Shiraishi O, Makino T, Satoh T, Mori M, Doki Y. Multicenter randomized phase II study of cisplatin and fluorouracil plus docetaxel (DCF) compared with cisplatin and fluorouracil plus Adriamycin (ACF) as preoperative chemotherapy for resectable esophageal squamous cell carcinoma (OGSG1003). Ann Oncol 2017; 28:116-120. [PMID: 27687307 DOI: 10.1093/annonc/mdw439] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND This phase II trial evaluated the efficacy of cisplatin and fluorouracil (CF)-based combination neoadjuvant chemotherapy on the outcome of patients with resectable locally advanced esophageal squamous cell carcinoma (ESCC). We compared the recurrence-free survival (RFS) associated with CF plus Adriamycin (ACF) with that associated with CF plus docetaxel (DCF) to select an alternative regimen in a new phase III trial investigating the optimal neoadjuvant treatment of patients with ESCC. PATIENTS AND METHODS Patients with resectable advanced ESCC were randomly assigned to either ACF (Adriamycin 35 mg/m2, cisplatin 70 mg/m2 i.v. on day 1, fluorouracil 700 mg/m2 continuous infusion for 7 days) every 4 weeks or DCF (docetaxel 70 mg/m2, cisplatin 70 mg/m2 i.v. on day 1, fluorouracil 700 mg/m2 continuous infusion for 5 days) every 3 weeks. Surgery was scheduled after completion of two cycles of chemotherapy. The primary end point was RFS, analyzed by the intention-to-treat. RESULTS Between October 2011 and October 2013, 162 patients at 10 institutions were enrolled in the study, all of whom were eligible and randomly assigned to the two groups (81 to the ACF group and 81 to the DCF group). The R0 resection rates for the ACF and DCF groups were equivalent (95.9% versus 96.2%, P = 0.93). The 2-year RFS and overall survival rates for DCF versus ACF were 64.1% versus 42.9% (hazard ratio 0.53, 95% confidence interval 0.33-0.83, P = 0.0057) and 78.6% versus 65.4% (P = 0.08), respectively. CONCLUSION Compared with ACF, DCF chemotherapy was associated with prolonged RFS for patients with resectable advanced ESCC. Thus, DCF chemotherapy has potential as a standard neoadjuvant therapy for resectable ESCC. CLINICAL TRIAL REGISTRATION University Hospital Medical Information Network Clinical Trials Registry of Japan (identification number UMIN000004555/000004616).
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Affiliation(s)
- M Yamasaki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka
| | - T Yasuda
- Department of Surgery, Kinki University School of Medicine, Osaka Sayama, Osaka
| | - M Yano
- Department of Surgery, Osaka Medical Center for Cancer and Cardiovascular Disease, Osaka
| | - M Hirao
- Department of Surgery, National Hospital Organization, Osaka National Hospital, Osaka
| | - K Kobayashi
- Department of Surgery, Kinki Central Hospital of the Mutual Aid Association of Public School Teachers, Hyogo
| | - K Fujitani
- Department of Surgery, Osaka General Medical Center, Osaka
| | - S Tamura
- Department of Surgery, Kansai Rosai Hospital, Hyogo
| | - Y Kimura
- Department of Gastroenterological Surgery, Nippon Telegraph and Telephone Public Corporation West Osaka Hospital, Osaka
| | - H Miyata
- Department of Surgery, Osaka Medical Center for Cancer and Cardiovascular Disease, Osaka
| | - M Motoori
- Department of Surgery, Osaka General Medical Center, Osaka
| | - O Shiraishi
- Department of Surgery, Kinki University School of Medicine, Osaka Sayama, Osaka
| | - T Makino
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka
| | - T Satoh
- Department of Frontier Science for Cancer and Chemotherapy, Osaka University Graduate School of Medicine, Osaka, Japan
| | - M Mori
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka
| | - Y Doki
- Department of Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka
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Tamura S, Taniguchi H, Takeno A, Murakami K, Katsura Y, Ohmura Y, Naito A, Kagawa Y, Takeda Y, Kato T. A randomized phase II study of pancrelipase in patients with gastrectomy to assess the prevention of weight loss. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw371.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tamura S, Yu Y, Nakagawa T, Nagasaka R, Tsunoda T, Ogawa K, Tori M, Koike T, Shiomi M. A novel compound (D-47), the hypolipidemic effects and the mechanism in an animal model of hypercholesterolemia (WHHLMI rabbit). Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.429] [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: 10/21/2022]
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Nishikawa K, Fujitani K, Inagaki H, Akamaru Y, Tokunaga S, Takagi M, Tamura S, Sugimoto N, Shigematsu T, Yoshikawa T, Ishiguro T, Nakamura M, Yamane T, Yamada M, Imano M, Iijima S, Nashimoto A, Morita S, Miyashita Y, Tsuburaya A, Sakamoto J, Tsujinaka T. PD-035 Efficacy and safety of second-line irinotecan based chemotherapy in early relapse patients with gastric cancer after adjuvant chemotherapy: exploratory subgroup analysis of TRICS trial. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw200.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shirakawa T, Nakano M, Nio K, Tamura S, Kumagai H, Komoda M, Uchino K, Arita S, Ariyama H, Shibata Y, Kusaba H, Akashi K, Baba E. 520P Retrospective analysis of cardiovascular diseases in chemotherapies for advanced solid tumor patients in a single institution. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv535.15] [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: 11/12/2022] Open
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Moritani N, Matsumura T, Yamachika E, Goda Y, Uemura A, Nakata N, Tamura S, Yoshioka Y, Iida S. A novel guide device of the osteotomy line for intraoral vertical ramus osteotomy. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.248] [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: 11/28/2022]
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Tamura S, Takeno A, Murakami K, Naito A, Katsura Y, Ohmura Y, Kagawa Y, Okishiro M, Egawa C, Takeda Y, Kato T. 2232 Results of the preoperative diagnosis by staging laparoscopy and the surgical intervention following chemotherapy for patients with peritoneal dissemination due to gastric cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31148-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Masuda Y, Tamura S, Sugiyama N. The effect of tonsillectomy and its postoperative clinical course in IgA nephropathy with chronic tonsillitis. Adv Otorhinolaryngol 2015; 47:203-7. [PMID: 1456134 DOI: 10.1159/000421745] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Y Masuda
- Department of Otolaryngology, Okayama University Medical School, Japan
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42
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Kunimoto M, Tamura S, Yoshie O, Tabata T. Epstein-Barr virus in Waldeyer's lymphatic tissue. Adv Otorhinolaryngol 2015; 47:151-60. [PMID: 1333723 DOI: 10.1159/000421735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- M Kunimoto
- Department of Otorhinolaryngology, Wakayama Medical College, Japan
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43
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Oze T, Hiramatsu N, Yakushijin T, Yamada R, Harada N, Morishita N, Oshita M, Mita E, Ito T, Inui Y, Inada M, Tamura S, Yoshihara H, Imai Y, Kato M, Miyagi T, Yoshida Y, Tatsumi T, Kasahara A, Hayashi N, Takehara T. The real impact of telaprevir dosage on the antiviral and side effects of telaprevir, pegylated interferon and ribavirin therapy for chronic hepatitis C patients with HCV genotype 1. J Viral Hepat 2015; 22:254-62. [PMID: 25081140 DOI: 10.1111/jvh.12289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Accepted: 05/14/2014] [Indexed: 01/28/2023]
Abstract
Triple therapy with telaprevir, pegylated interferon and ribavirin has been reported to improve antiviral efficacy but have potentially severe adverse effects in patients with chronic hepatitis C. To avoid the severe effects of telaprevir, lowering the dose has been suggested. However, impact of dosage changes on antiviral and adverse effects remains unclear. One hundred and sixty-six Japanese patients with HCV genotype 1 were treated with triple therapy. The drug exposure of each medication was calculated by averaging the dose actually taken. The overall SVR rate was 82%. The telaprevir discontinuation rate was 26%. The factors associated with discontinuation were an older age (≥65 y.o.) and a higher average dose during treatment. The telaprevir discontinuation rates were 42%, 25% and 14% in patients at ≥35, 25-35 and <25 mg/kg/day of telaprevir and 58% in older patients at ≥35 mg/kg/day of TVR. The factors associated with SVR were treatment-naïve, relapse to previous treatment, higher average telaprevir dose during treatment and completion of treatment. The SVR rate was higher, at 91%, in patients at 25-35 mg/kg/day of telaprevir than the 71% and 78% observed in those at <25 and ≥35 mg/kg/day of drug. In Japanese patients, a mean telaprevir dose of 25-35 mg/kg/day during treatment can augment its efficacy in triple therapy for patients with HCV genotype 1.
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Affiliation(s)
- T Oze
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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44
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Murai N, Fushiki H, Honda S, Murakami Y, Iwashita A, Irie M, Tamura S, Nagakura Y, Aoki T. Relationship between serotonin transporter occupancies and analgesic effects of AS1069562, the (+)-isomer of indeloxazine, and duloxetine in reserpine-induced myalgia rats. Neuroscience 2015; 289:262-9. [DOI: 10.1016/j.neuroscience.2014.12.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 12/22/2014] [Accepted: 12/23/2014] [Indexed: 11/26/2022]
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45
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Kishi K, Nishikawa K, Inoue K, Matsuyama J, Akamaru Y, Kimura Y, Tamura S, Kawabata R, Kawata J, Shimokawa T, Imamura H. PP074-MON: Evaluation of Oral, Nutritional Support by Using an Elemental Diet on Postoperative Body Weight in Gastric Cancer Patients: A Randomized Clinical Trial. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50409-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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46
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Kawabata R, Nishikawa K, Kishi K, Inoue K, Matsuyama J, Akamaru Y, Kimura Y, Tamura S, Kawada J, Fujiwara Y, Kawase T, Fukui J, Takagi M, Takeno A, Shimokawa T, Imamura H. Evaluation of Oral, Nutritional Support on Postoperative Body Weight in Gastric Cancer Patients Receiving Elemental Diet: a Randomized Study. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.22] [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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47
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Yamamoto K, Fujitani K, Tamura S, Fujita J, Matsuyama J, Kimura Y, Imamura H, Makari Y, Kurokawa Y, Satoh T, Tsujinaka T, Furukawa H. Multicenter Phase Ii Trial of Adjuvant S-1 Plus Docetaxel for 6 Months in Patients with Pathological Stage III Gastric Cancer (Ogsg-1002). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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48
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Harada N, Hiramatsu N, Oze T, Morishita N, Yamada R, Hikita H, Miyazaki M, Yakushijin T, Miyagi T, Yoshida Y, Tatsumi T, Kanto T, Kasahara A, Oshita M, Mita E, Hagiwara H, Inui Y, Katayama K, Tamura S, Yoshihara H, Imai Y, Inoue A, Hayashi N, Takehara T. Risk factors for hepatocellular carcinoma in hepatitis C patients with normal alanine aminotransferase treated with pegylated interferon and ribavirin. J Viral Hepat 2014; 21:357-65. [PMID: 24716638 DOI: 10.1111/jvh.12151] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 05/02/2013] [Accepted: 06/20/2013] [Indexed: 12/09/2022]
Abstract
Pegylated interferon (Peg-IFN) plus ribavirin combination therapy is effective in patients with hepatitis C virus (HCV) infection and normal alanine aminotransferase levels (NALT). However, it remains unclear whether the risk of hepatocellular carcinoma (HCC) incidence is actually reduced in virological responders. In this study, HCC incidence was examined for 809 patients with NALT (ALT ≤ 40 IU/mL) treated with Peg-IFN alpha-2b and ribavirin for a mean observation period of 36.2 ± 16.5 months. The risk factors for HCC incidence were analysed by Kaplan-Meier method and Cox proportional hazards model. On multivariate analysis among NALT patients, the risk of HCC incidence was significantly reduced in patients with sustained virological response (SVR) or relapse compared with those showing nonresponse (NR) (SVR vs NR, hazard ratio (HR): 0.16, P = 0.009, relapse vs NR, HR: 0.11, P = 0.037). Other risk factors were older age (≥65 years vs <60 years, HR: 6.0, P = 0.032, 60-64 vs <60 years, HR: 3.2, P = 0.212) and male gender (HR: 3.9, P = 0.031). Among 176 patients with PNALT (ALT ≤ 30 IU/mL), only one patient developed HCC and no significant risk factors associated with HCC development were found. In conclusion, antiviral therapy for NALT patients with HCV infection can lower the HCC incidence in responders, particularly for aged and male patients. The indication of antiviral therapy for PNALT (ALT ≤ 30 IU/mL) patients should be carefully determined.
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Affiliation(s)
- N Harada
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Suita, Japan
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49
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Ueki K, Ikeuchi H, Ota F, Yokoo M, Tamura S, Kaneko Y, Kuroiwa T, Tsukada Y, Maezawa A, Nojima Y. Extremely high levels of C-reactive protein in patients with acute lupus serositis. Mod Rheumatol 2014; 12:267-70. [PMID: 24387072 DOI: 10.3109/s101650200049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract We present the cases of two patients (19- and 40-year-old women) with systemic lupus erythematosus (SLE) who showed marked elevation of C-reactive protein (CRP). In both patients, pleural and/or peritoneal effusions were caused by lupus serositis. Methylprednisolone pulse therapy was effective in improving the serositis and normalizing CRP. Although it is generally considered that the CRP response is relatively weak in lupus patients, these cases suggest that a strong CRP response can occur in a subset of SLE.
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Affiliation(s)
- K Ueki
- Third Department of Internal Medicine, Gunma University School of Medicine , 3-39-15 Showa, Maebashi 371-8511 , Japan
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50
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Tamura S, Nishii T, Takao M, Sakai T, Yoshikawa H, Sugano N. Differences in the locations and modes of labral tearing between dysplastic hips and those with femoroacetabular impingement. Bone Joint J 2013; 95-B:1320-5. [DOI: 10.1302/0301-620x.95b10.31647] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [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: 11/05/2022]
Abstract
We investigated differences in the location and mode of labral tears between dysplastic hips and hips with femoroacetabular impingement (FAI). We also investigated the relationship between labral tear and adjacent cartilage damage. We retrospectively studied 72 symptomatic hips (in 68 patients: 19 men and 49 women) with radiological evidence of dysplasia or FAI on high-resolution CT arthrography. The incidence and location of labral tears and modes of tear associated with the base of the labrum (Mode 1) or body of the labrum (Mode 2) were compared among FAI, mildly dysplastic and severely dysplastic hips. The locations predominantly involved with labral tears were different in FAI and mild dysplastic hips (anterior and anterosuperior zones) and in severely dysplastic hips (anterosuperior and superior zones) around the acetabulum. Significant differences were observed in the prevalence of Mode 1 versus Mode 2 tears in FAI hips (72% (n = 13) vs 28% (n = 5)) and severe dysplastic hips (25% (n = 2) vs 75% (n = 6)). The frequency of cartilage damage adjacent to Mode 1 tears was significantly higher (42% (n = 14)) than that adjacent to Mode 2 tears (14% (n = 3)). Hip pathology is significantly related to the locations and modes of labral tears. Mode 1 tears may be a risk factor for the development of adjacent acetabular cartilage damage. Cite this article: Bone Joint J 2013;95-B:1320–5.
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Affiliation(s)
- S. Tamura
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Medical Engineering, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
| | - T. Nishii
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Medical Engineering, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
| | - M. Takao
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Surgery, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
| | - T. Sakai
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Surgery, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
| | - H. Yoshikawa
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Surgery, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
| | - N. Sugano
- Osaka University Graduate School of Medicine, Department
of Orthopaedic Medical Engineering, 2-2 Yamadaoka, Suita, Osaka
565-0871, Japan
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