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Oba Y, Motokawa R, Kaneko K, Nagai T, Tsuchikawa Y, Shinohara T, Parker JD, Okamoto Y. Neutron resonance absorption imaging of simulated high-level radioactive waste in borosilicate glass. Sci Rep 2023; 13:10071. [PMID: 37344550 DOI: 10.1038/s41598-023-37157-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/16/2023] [Indexed: 06/23/2023] Open
Abstract
We performed a preliminary study of neutron resonance absorption imaging to investigate the spatial distribution of constituent elements in borosilicate glasses containing simulated high-level radioactive waste, in which elemental inhomogeneities affect the physical and chemical stabilities of the glass. Dips generated by the resonance absorptions of Rh, Pd, Na, Gd, Cs, and Sm were observed in the neutron transmission spectra of the glass samples. The spatial distributions of these elements were obtained from the neutron transmission images at the resonance energies. The distributions of Rh and Pd visualized the sedimentation of these platinum group elements. In contrast, the lanthanides (Gd and Sm) and Cs were uniformly dispersed. These results show that neutron resonance absorption imaging is a promising tool for characterizing borosilicate glasses and investigating the vitrification mechanism of high-level radioactive waste.
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Affiliation(s)
- Y Oba
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan.
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, 441-8580, Japan.
| | - R Motokawa
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - K Kaneko
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - T Nagai
- TRP Decommissioning Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1194, Japan
| | - Y Tsuchikawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - T Shinohara
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - J D Parker
- Neutron R&D Division, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki, 319-1106, Japan
| | - Y Okamoto
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
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Takenaka S, Sato T, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Utility of Near-Infrared Spectroscopy Intravascular Ultrasound in the Assessment of Rapidly Progressive Cardiac Allograft Vasculopathy. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.481] [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: 04/05/2023] Open
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3
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Sato T, Takenaka S, Kazui S, Yasui Y, Saiin K, Naito S, Takahashi Y, Mizuguchi Y, Tada A, Kobayashi Y, Omote K, Konishi T, Kamiya K, Ooka T, Nagai T, Wakasa S, Anzai T. Clinical Implications of Hemodynamic Assessment in Small Body Surface Area Patients with Left Ventricular Assist Device. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.805] [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: 04/05/2023] Open
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4
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Etani T, Morikawa T, Gonda M, Aoki M, Nagai T, Iida K, Taguchi K, Naiki T, Hamamoto S, Okada A, Kawai N, Yasui T. Usefulness of stone culture in endoscopic combined intra-renal surgery. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Takenaka S, Sato T, Nagai T, Omote K, Kamiya K, Konishi T, Kobayashi Y, Tada A, Mizuguchi Y, Takahashi Y, Naito S, Saiin K, Ishizaka S, Wakasa S, Anzai T. Impact of right ventricular reserve on exercise capacity and quality of life in patients with left ventricular assist device. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1011] [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: 11/15/2022] Open
Abstract
Abstract
Background
Right heart failure following left ventricular assist device (LVAD) implantation is a major complication which significantly impairs functional capacity and quality of life (QoL). Right ventricular (RV) reserve function may limit exercise capacity and QoL in LVAD patients; however, most patients show normal RV haemodynamics at rest.
Purpose
The aim of this study was to investigate whether RV reserve assessed by the changes of RV function during exercise is correlated with exercise capacity and QoL in patients with LVAD.
Methods
We prospectively examined 20 consecutive LVAD patients who were admitted to our university hospital between June 2020 and November 2021 after excluding those who were unable to perform exercise (n=8). All patients underwent invasive exercise right heart catheterisation with simultaneous echocardiography in the supine position. RV stroke work index (RVSWI) was calculated as 0.0136 × stroke volume index × (mean pulmonary artery pressure [mPAP] − right atrial pressure [RAP]) at rest and during exercise. Exercise capacity and QoL were assessed by 6-minute walk distance (6MWD) and peak oxygen consumption (VO2) in cardiopulmonary exercise testing, and the EuroQol visual analogue scale (EQ-VAS), respectively. The patients were divided into two groups according to the median ΔRVSWI (RVSWI change from rest to peak exercise) of 1.45 (interquartile range [IQR] −0.31 to 8.25) g/m2.
Results
Patients were predominantly male (75%) and the median age was 47 (IQR 38–60) years. Patients with lower ΔRVSWI had significantly higher change on RAP (P=0.019), but significantly lower change on mPAP (P<0.001) compared to those with higher ΔRVSWI. There were no significant differences in age, gender, primary aetiology of heart failure, type of LVAD devices, or echocardiographic parameters including tricuspid annular plane systolic excursion, and RVSWI at rest between the groups. ΔRVSWI during exercise were positively correlated with 6MWD (R=0.69, P<0.01) and peak VO2 (R=0.66, P<0.01) (Figure A). In addition, ΔRVSWI during exercise were positively correlated with the EQ-VAS (R=0.48, P=0.031). On the other hand, there was no significant correlation between RVSWI at rest and 6MWD (R=−0.11, P=0.63) and peak VO2 (R=0.13, P=0.95), and the EQ-VAS (R=0.11, P=0.61). During a median follow-up period of 312 (IQR 176–369) days, adverse events occurred in 3 patients (15%), including 1 death and 2 hospitalisations for major bleeding and right heart failure. Kaplan-Meier analysis revealed that the adverse events more frequently occurred in patients with lower ΔRVSWI compared to those with higher ΔRVSWI (Figure B).
Conclusions
ΔRVSWI was positively correlated with 6MWD, peak VO2 and EQ-VAS irrespective of RV function at rest. Our findings suggest that the assessment of RV reserve function using ΔRVSWI would be useful for risk stratification in patients with LVAD.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Takenaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Sato
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Nagai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Omote
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Kamiya
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Konishi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Kobayashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - A Tada
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Mizuguchi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - Y Takahashi
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Naito
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - K Saiin
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Ishizaka
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - S Wakasa
- Hokkaido University, Cardiovascular and Thoracic Surgery, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
| | - T Anzai
- Hokkaido University, Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine , Sapporo , Japan
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Nagai A, Nagai T, Yaguchi H, Fujii S, Horiuchi K, Ura S, Shirai S, Iwata I, Matsushima M, Anzai T, Yabe I. VP.45 Clinical features of anti-mitochondrial M2 antibody-positive myositis: Case series of 17 patients. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.176] [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: 11/07/2022]
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Fujiwara K, Nishio S, Yamamoto K, Fujiwara H, Itagaki H, Nagai T, Takano H, Yamaguchi S, Kudoh A, Suzuki Y, Nakamoto T, Kamio M, Kato K, Nakamura K, Takehara K, Yahata H, Kobayashi H, Saito M, Ushijima K, Hasegawa K. LBA31 Randomized phase III trial of maintenance chemotherapy with tegafur-uracil versus observation following concurrent chemoradiotherapy for locally advanced cervical cancer, GOTIC-002 LUFT trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.08.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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8
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Aoyagi H, Tsujinaga S, Iwano H, Ishizaka S, Tamaki Y, Motoi K, Chiba Y, Murayama M, Nakabachi M, Nishino H, Yokoyama S, Sato T, Kaga S, Nagai T, Anzai T. Pathophysiological mechanism of worsened clinical outcome by lowered left ventricular cardiac power output in heart failure. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.383] [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
Funding Acknowledgements
Type of funding sources: None.
Background
Cardiac power output (CPO) is a measure of cardiac pumping function, and CPO during exercise is known to be a powerful prognostic marker of heart failure. Despite its prognostic significance, pathophysiological mechanism of the association between reduced CPO and worse clinical outcome is unknown. We hypothesized that reduced CPO is associated with worse outcome through the reduced exercise capacity and enhanced ventilatory response.
Methods
Cardiopulmonary exercise testing and exercise stress echocardiography were performed in consecutive 64 patients with chronic heart failure who admitted to our department for the management of heart failure [60 ± 14 years old, left ventricular (LV) ejection fraction 39 ± 16%, ischemic etiology 16%, brain natriuretic peptide 124 pg/ml (51-313)]. Peak oxygen uptake (peak VO2) and the lowest minute ventilation / carbon dioxide production ratio (VE/VCO2) were measured as a parameter of exercise tolerance and that of ventilatory response, respectively. LV ejection fraction was measured by disk summation method at peak exercise. By using Doppler images, E/e" at peak exercise was measured as a marker of LV filling pressure, and CPO normalized by LV mass was obtained as 0.222 × cardiac output × mean blood pressure / LV mass [W/100 g]. Cardiac events defined as hospitalization for heart failure, cardiac death, or implantation of a LV assist device after the examinations were recorded.
Results
CPO at rest was weakly correlated with peak VO2 (r = 0.25, p = 0.046) but not with VE/VCO2. In contrast, CPO at peak exercise was positively correlated with peak VO2 (r = 0.50, p < 0.001) and inversely correlated with VE/VCO2 (r=-0.40, p = 0.002). Moreover, CPO at peak exercise determined both peak VO2 (b = 0.50) and VE/VCO2 (β=-0.54) independently of LV ejection fraction and E/e" at peak exercise. During a median follow-up period of 1211 days, 12 cardiac events were observed. Each of reduced peak VO2 (hazard ratio 0.78, 95% confidence interval 0.66-0.90) and increased VE/VCO2 (hazard ratio 1.10, 95% confidence interval 1.02-1.18) was associated with worse clinical outcome.
Conclusions
In patients with chronic heart failure, CPO during exercise was associated with prognosis of heart failure through the reduced exercise capacity and enhanced ventilatory response.
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Affiliation(s)
- H Aoyagi
- Hokkaido University, Sapporo, Japan
| | | | - H Iwano
- Hokkaido University, Sapporo, Japan
| | | | - Y Tamaki
- Hokkaido University, Sapporo, Japan
| | - K Motoi
- Hokkaido University, Sapporo, Japan
| | - Y Chiba
- Hokkaido University, Sapporo, Japan
| | - M Murayama
- Hokkaido University Hospital, Sapporo, Japan
| | - M Nakabachi
- Hokkaido University Hospital, Sapporo, Japan
| | - H Nishino
- Hokkaido University Hospital, Sapporo, Japan
| | - S Yokoyama
- Hokkaido University Hospital, Sapporo, Japan
| | - T Sato
- Hokkaido University, Sapporo, Japan
| | - S Kaga
- Hokkaido University, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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9
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Tada A, Nagai T, Omote K, Tsujinaga S, Kamiya K, Konishi T, Sato T, Komoriyama H, Kobayashi Y, Takenaka S, Mizuguchi Y, Yamamoto K, Yoshikawa T, Saito Y, Anzai T. Validation of the HFA-PEFF and the H2FPEF scores for the diagnosis of heart failure with preserved ejection fraction in Japanese patients:a report from the Japanese multicentre registry. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The standard diagnosis of heart failure (HF) with preserved ejection fraction (HFpEF) is based on the following: 1) symptoms of HF, 2) preserved left ventricular (LV) ejection fraction (LVEF, >50%), and 3) presence of LV diastolic dysfunction confirmed by echocardiography or cardiac catheterisation. However, there are limits to the diagnostic accuracy of individual parameters, and what cut-off values should be applied and how they should be combined remain unclear. Diagnostic algorithms for HFpEF such as the HFA-PEFF algorithm and the H2FPEF score have been proposed; however, previous validation studies were conducted in stable chronic HF and did not include an invasive haemodynamic assessment. Thus, the diagnostic accuracy for HFpEF lacked robustness. Moreover, information on their applicability in the Asian population is limited.
Purpose
The aim of this study was to investigate these scores' diagnostic validity for HFpEF in Japanese patients recently hospitalised due to acute decompensated HF.
Methods
We examined patients with HFpEF recently hospitalised with acute decompensated HF whose HFA-PEFF and H2FPEF scores could be calculated at discharge from a nationwide HFpEF-specific multicentre registry (HFpEF group) and control patients who underwent echocardiography to investigate the cause of dyspnoea in our hospital (Non-HFpEF group). We calculated the HFA-PEFF and the H2FPEF scores among the studied population. Receiver operating characteristic (ROC) curves and area under the curve (AUC) were computed to compare the diagnostic accuracy of these scores.
Results
The studied population included 372 consecutive patients (194 HFpEF group and 178 Non-HFpEF group; HFpEF prevalence, 52%). The HFA-PEFF score classified 155 (42%) of all patients into the high likelihood category (5–6 points) and only 19 (5%) into the low likelihood category (0–1 point). A high HFA-PEFF score could diagnose HFpEF with a high specificity of 84% and a positive predictive value (PPV) of 82%, and a low HFA-PEFF score could rule out HFpEF with a high sensitivity of 99% and a negative predictive value (NPV) of 89%. The H2FPEF score classified 86 (23%) of all patients into the high likelihood category (6–9 points) and 84 (23%) into the low likelihood category (0–1 point). HFpEF could be diagnosed with a high H2FPEF score (specificity, 97%; PPV, 94%) or ruled out with a low H2FPEF score (sensitivity, 97%; NPV, 93%). The diagnostic accuracy for the HFA-PEFF and H2FPEF scores was 0.82 (95% confidence interval [CI] 0.78–0.86) and 0.89 (95% CI 0.86–0.93), respectively, by the AUC of the ROC curve (P=0.004) (Figure 1A). In the HFA-PEFF sub-scores, the functional score showed little diagnostic value, while the morphological and biomarker scores showed moderate diagnostic value (Figure 1B).
Conclusions
The H2FPEF score may be more useful than the HFA-PEFF score in diagnosing HFpEF in Japanese patients.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS KAKENHI) Figure 1
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Affiliation(s)
- A Tada
- Hokkaido University, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - K Omote
- Hokkaido University, Sapporo, Japan
| | | | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | | | - T Sato
- Hokkaido University, Sapporo, Japan
| | | | | | | | | | | | | | - Y Saito
- Nara Medical University, Nara, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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Kawakami H, Inoue K, Nagai T, Fujii A, Sasaki Y, Shikano Y, Sakuoka N, Miyazaki M, Takasuka Y, Ikeda S, Yamaguchi O. Left atrial dysfunction still exists in patients who obtain normal left atrial volume after successful ablation of atrial fibrillation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Atrial fibrillation (AF) promotes left atrial (LA) remodeling and vice versa. LA volume index (LAVI) ≥34 mL/m2 is an established cut-off value for identifying an enlarged left atrium. Catheter ablation has become an established therapy for AF and provides a reduction of LA volume by maintaining sinus rhythm (reverse remodeling). However, the definition of LA reverse remodeling after AF ablation is undetermined.
Purpose
We hypothesized that patients with LA dilatation who obtain normal LA volume (LAVI <34 mL/m2) after AF ablation would have better long-term outcomes than those who do not. Furthermore, we investigated whether patients with a normal LA volume could also obtain normal LA function with AF ablation.
Methods
We enrolled 140 AF patients with baseline LAVI ≥34 mL/m2, without AF recurrence for 1 year after the initial AF ablation. We acquired conventional and speckle-tracking echocardiographic parameters within 24 h and at 1 year after the procedure. Late recurrence was defined as AF recurrence >1 year after the initial ablation. To define the normal range of LA function, age-and sex-matched 140 controls without a history of AF were also enrolled.
Results
After restoration of sinus rhythm, overall LA structural and functional parameters were significantly improved, and 75 patients (54%) had normal LA volume at the time of follow-up (Table). During a median follow-up of 44 (31–61) months, 32 patients (23%) experienced a late recurrence of AF. Patients who obtained normal LA volume after AF ablation had fewer late recurrences than those who did not (P<0.01) (Figure). However, LA functional abnormalities still existed in AF patients, even if LA volume was normalized as in controls (Table).
Conclusion
Patients who obtain normal LA volume have better long-term outcomes of AF ablation than those who do not. Although AF ablation promotes beneficial effects on LA structure and function, LA function cannot be normalized even in patients who obtain normal LA volume after successful ablation. Thus, physicians should carefully consider long-term follow-up and residual AF risks, regardless of sinus rhythm restoration by catheter ablation.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - K Inoue
- Ehime University, Toon, Japan
| | - T Nagai
- Ehime University, Toon, Japan
| | - A Fujii
- Ehime University, Toon, Japan
| | | | | | | | | | | | - S Ikeda
- Ehime University, Toon, Japan
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Takenaka S, Kobayashi Y, Nagai T, Kato Y, Komoriyama H, Nagano N, Kamiya K, Konishi T, Sato T, Omote K, Tada A, Iwano H, Kusano K, Ishibashi-Ueda H, Anzai T. Applicability of the AHA/ACC/HRS guideline for implantable cardioverter defibrillator implantation in Japanese patients with cardiac sarcoidosis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0689] [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
Sarcoidosis is a systemic granulomatous disease that affects multiple organs. Cardiac involvement is a key determinant of poor clinical outcomes in the patients with sarcoidosis, as it causes congestive heart failure, conduction abnormalities, ventricular tachycardia and fibrillation (VT/VF), and sudden cardiac death (SCD). Although implantable cardioverter defibrillators (ICDs) are used to prevent SCD from VT/VF in patients with cardiac sarcoidosis (CS), the generalizability of the AHA/ACC/HRS guidelines for the Japanese CS patients remains unclear.
Purpose
We aimed to assess, among Japanese patients with CS, the ICD recommendations from the 2017 AHA/ACC/HRS Guidelines for Management of Patients with Ventricular Arrhythmias and the Prevention of Sudden Cardiac Death.
Methods
We examined 188 consecutive patients with CS in two tertiary hospitals between 1979 and 2020. The primary outcome was defined as a composite outcome involving SCD or ventricular arrhythmic events. Ventricular arrhythmic events were defined as either emergency treatment for VF or sustained VT, which included appropriate ICD therapy.
Results
During a median follow-up period of 5.68 (IQR: 4.87–6.70) years, the primary outcome occurred in 44 patients (23%), which included 6 cases of SCD and 38 cases of VT/VF. ICD implant was indicated based on left ventricular ejection fraction (LVEF) of ≤35% (class I recommendation) in 62 patients, with an annualized event rate of 3.93%. A LVEF of >35% with a need for a permanent pacemaker (class IIa recommendation) was observed for 53 patients, with an annualized event rate of 2.54%. A LVEF of >35% with late gadolinium enhancement (LGE) during cardiovascular magnetic resonance (class IIa recommendation) was observed for 62 patients, with an annualized event rate of 2.38% (Figure A). Kaplan-Meier analyses revealed that patients with a class I recommendation for ICD implantation had a significant higher incidence of the primary outcome, compared to patients with a class IIa recommendation and patients with no indication for ICD implantation (P=0.03). However, there were no significant differences in the incidence of the primary outcome between patients with a LVEF of >35% and a need for a permanent pacemaker and patients with a class I recommendation (P=0.08) or patients with a LVEF of ≤35% (P=0.31). Moreover, there was no significant difference in the incidence of the primary outcome between patients with a LVEF of >35% and LGE on cardiovascular magnetic resonance and patients with a class I recommendation (P=0.054) or patients with a LVEF of ≤35% (P=0.22) (Figure B).
Conclusions
The American guideline recommendations for ICD implantation might be applicable to Japanese patients with CS. Implantation of an ICD may need to be considered in these patients if they require a permanent pacemaker or have LGE, regardless of LVEF.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Japan Society for the Promotion of Science
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Affiliation(s)
| | | | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Sapporo, Japan
| | | | - N Nagano
- Sapporo Medical University Hospital, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | | | - T Sato
- Hokkaido University, Sapporo, Japan
| | - K Omote
- Hokkaido University, Sapporo, Japan
| | - A Tada
- Hokkaido University, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Sapporo, Japan
| | - K Kusano
- National Cerebral and Cardiovascular Center Hospital, Osaka, Japan
| | - H Ishibashi-Ueda
- National Cerebral and Cardiovascular Center Hospital, Osaka, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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12
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Kobayashi Y, Nagai T, Hirata K, Tsuneta S, Kato Y, Komoriyama H, Kamiya K, Konishi T, Sato T, Omote K, Ohira H, Kudoh K, Konno S, Anzai T. Association of high serum soluble interleukin 2 receptor levels with risk of adverse events in patients with cardiac sarcoidosis. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1797] [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: 11/15/2022] Open
Abstract
Abstract
Background
Sarcoidosis is a systemic granulomatous disease that affects multiple organs. Among these, the presence of cardiac involvement is recognised as a determinant of worse clinical outcomes. Soluble interleukin 2 receptor (sIL-2R) is a potentially useful biomarker in the diagnosis and evaluation of disease severity in patients with sarcoidosis. However, it remains to be seen whether sIL-2R is associated with the severity and activity of disease in patients with cardiac sarcoidosis (CS).
Purpose
The aims of this study were to investigate whether sIL-2R was associated with clinical outcomes and to clarify the relationship between sIL-2R levels and disease activity evaluated by 18F-fluorideoxyglucose in positron emission tomography/computed tomography (18F-FDG PET/CT) in patients with CS.
Methods
We examined 101 consecutive patients with CS who were admitted to our University HospitalbetweenMay 2003 and February 2020. Patients who had no data of serum sIL-2R levels before initiation of immunosuppressive therapy (n=18) were excluded. Ultimately, 83 patients were examined in this study. The primary outcome was a composite of advanced atrioventricular block (AVB), ventricular tachycardia or ventricular fibrillation (VT/VF), heart failure hospitalisation, and all-cause death. Inflammatory activity in the myocardium and lymph nodes were assessed by18F-FDG PET/CT. We used a published program to analyse the cardiac metabolic activity (CMA), and total lymph node glycolysis (TLyG), which are quantitative measures of FDG volume-intensity.
Results
During a median follow-up period of 2.96 (interquartile range 2.24–4.27) years, the primary outcome occurred in 24 patients (29%), including 1 advanced AVB, 13 VT/VF, 5 hospitalisations for heart failure, and 5 all-cause deaths. Kaplan-Meier analyses showed that the primary outcome occurred more frequently in patients with higher sIL-2R levels (>538 U/mL, the median) than in those with lower sIL-2R levels (Figure). A multivariable Cox regression analysis revealed that a higher sIL-2R level was independently associated with an increased subsequent risk of adverse events (hazard ratio 3.71, 95% confidence interval 1.63–8.44, p=0.002), even after adjustments for age, plasma B-type natriuretic peptide, estimated glomerular filtration rate, left ventricular ejection fraction, and late gadolinium enhancement, which are known to be strong determinants of worse clinical outcomes in patients with CS (Table). Furthermore, sIL-2R levels were significantly correlated with TLyG, the inflammatory activity in lymph nodes (r=0.346, p=0.003) but not with CMA, the inflammatory activity in myocardium (r=0.131, p=0.27).
Conclusions
Increased sIL-2R is associated with worse long-term clinical outcomes accompanied by increased systemic inflammatory activity in CS patients. These findings suggest the importance of assessing sIL-2R as a surrogate marker for further risk stratification in these patients.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): Japan Society for the Promotion of Science
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Affiliation(s)
- Y Kobayashi
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Hirata
- Hokkaido University, Department of Diagnostic Imaging, Sapporo, Japan
| | - S Tsuneta
- Hokkaido University, Department of Diagnostic Imaging, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Komoriyama
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Konishi
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Sato
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Omote
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Ohira
- Hokkaido University, Department of Respiratory Medicine, Sapporo, Japan
| | - K Kudoh
- Hokkaido University, Department of Diagnostic Imaging, Sapporo, Japan
| | - S Konno
- Hokkaido University, Department of Respiratory Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
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13
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Ichimura T, Kakizuka T, Horikawa K, Seiriki K, Kasai A, Hashimoto H, Fujita K, Watanabe TM, Nagai T. Exploring rare cellular activity in more than one million cells by a transscale scope. Sci Rep 2021; 11:16539. [PMID: 34400683 PMCID: PMC8368064 DOI: 10.1038/s41598-021-95930-7] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/03/2021] [Indexed: 02/07/2023] Open
Abstract
In many phenomena of biological systems, not a majority, but a minority of cells act on the entire multicellular system causing drastic changes in the system properties. To understand the mechanisms underlying such phenomena, it is essential to observe the spatiotemporal dynamics of a huge population of cells at sub-cellular resolution, which is difficult with conventional tools such as microscopy and flow cytometry. Here, we describe an imaging system named AMATERAS that enables optical imaging with an over-one-centimeter field-of-view and a-few-micrometer spatial resolution. This trans-scale-scope has a simple configuration, composed of a low-power lens for machine vision and a hundred-megapixel image sensor. We demonstrated its high cell-throughput, capable of simultaneously observing more than one million cells. We applied it to dynamic imaging of calcium ions in HeLa cells and cyclic-adenosine-monophosphate in Dictyostelium discoideum, and successfully detected less than 0.01% of rare cells and observed multicellular events induced by these cells.
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Affiliation(s)
- T Ichimura
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.
- PRESTO, Japan Science and Technology Agency, Tokyo, 113-0033, Japan.
| | - T Kakizuka
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Horikawa
- Department of Optical Imaging, Advanced Research Promotion Center, Tokushima University, Kuramoto-cho 3-18-15, Tokushima, Tokushima, 770-8503, Japan
| | - K Seiriki
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
| | - A Kasai
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
| | - H Hashimoto
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
- Institute for Transdisciplinary Graduate Degree Programs, Osaka University, Yamadaoka 1-1, Suita, Osaka, 565-0871, Japan
| | - K Fujita
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - T M Watanabe
- Laboratory for Comprehensive Bioimaging, RIKEN Center for Biosystems Dynamics Research (BDR), Minatomachi-minami 2-2-3, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan
| | - T Nagai
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.
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14
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Nagai T, Taguchi K, Isobe T, Matsuyama N, Hattori T, Unno R, Kato T, Etani T, Hamakawa T, Fujii Y, Ikegami Y, Kamiya H, Hamamoto S, Nakane A, Ando R, Maruyama T, Okada A, Kawai N, Yasui T. A multicenter, propensity score-matched retrospective study of preventing postoperative infection in robotic and laparoscopic minimally invasive surgeries; double-versus single-gloving. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00561-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Ishizaka S, Iwano H, Kamiya K, Nagai T, Motoi K, Chiba Y, Tsujinaga S, Kaga S, Anzai T. Influence of left ventricular systolic dysfunction on occurrence of pulsus tardus in patients with aortic stenosis. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.077] [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
Funding Acknowledgements
Type of funding sources: None.
Background
The time between left ventricular (LV) and aortic systolic pressure peaks (TLV-Ao) which could reflect pulsus tardus (PT) is reported to be a marker of severity and be associated with poor prognosis in patients with aortic stenosis (AS). Despite its worldwide recognition, physiological mechanism of PT has not been well elucidated. We hypothesized that not only severity of the AS but also LV systolic dysfunction could be associated with occurrence of PT.
Methods
TLV-Ao and mean trans-aortic valvular pressure gradient (mean PG) were measured by simultaneous pressure tracing of left ventricle and basal aorta in 74 AS patients with at least moderate severity (78 ± 8 years old). Effective orifice area index (EOAI) was estimated by using continuity equation from transthoracic echocardiography and severe AS was defined as EOAI ± 0.60 cm²/m². Global longitudinal strain (GLS) was measured by using speckle-tracking method and expressed as an absolute value.
Results
TLV-Ao, mean PG, and EOAI was 87 ± 30 msec, 51 ± 21 mmHg, and 0.51 ± 0.14 cm² respectively. A weak correlation was observed between EOAI and TLV-Ao (Figure). In 9 out of 17 moderate AS patients (A in Figure), TLV-Ao was prolonged over the previously reported cut-off value (≥66 msec), on the other hand, it was not prolonged in 11 out of 57 severe AS patients (D in Figure). When the patients were divided by TLV-Ao of 66 msec, mean PG was not different between patients with prolonged TLV-Ao and those without in moderate AS patients (Figure, A vs B; NS), whereas GLS was significantly reduced in prolonged TLV-Ao group (P = 0.0383). In patients with severe AS, mean PG was significantly higher (P < 0.0001) in patients with prolonged TLV-Ao than in those without (Figure, C vs D), whereas GLS was comparable between the groups. In overall patients, multivariable analysis revealed that not only mean PG (β=0.54) but also GLS (β=-0.23) was an independent determinant of TLV-Ao.
Conclusion
The occurrence of pulsus tardus could be associated not only with severity of the AS but also with LV systolic dysfunction in patients with AS.
Abstract Figure
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Affiliation(s)
- S Ishizaka
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Motoi
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Chiba
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - S Tsujinaga
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - S Kaga
- Hokkaido University, Faculty of Health Sciences, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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16
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Chiba Y, Iwano H, Murayama M, Kaga S, Motoi K, Ishizaka S, Tsujinaga S, Kamiya K, Nagai T, Anzai T. Presence and significance of mid-systolic notch on right ventricular outflow tract velocity envelopes in pulmonary hypertension due to heart failure. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
A mid-systolic notch (MSN) of the right ventricular outflow tract (RVOT) pulsed-wave Doppler envelope, which is recognized as a characteristic finding in pre-capillary pulmonary hypertension (PH), is often observed in heart failure (HF) patients. However, clinical significance of MSN formation in HF has not been elucidated.
Methods
Consecutive 233 HF patients who underwent right heart catheterization and echocardiography within 24 hours were enrolled. Isolated post-capillary PH (IpcPH) was defined as mean pulmonary arterial pressure (mPAP) >20 mmHg, mean pulmonary artery wedge pressure (mPAWP) >15 mmHg, and pulmonary vascular resistance (PVR) <3 Wood units and combined pre- and post-capillary PH (CpcPH) was as mPAP >20 mmHg, mPAWP >15 mmHg, and PVR ≥3 Wood units. Pulmonary arterial capacitance (PAC) was calculated as stroke volume / pulmonary arterial pulse pressure [mL/mmHg]. MSN was defined as formation of notch within first half of the RVOT pulsed-wave Doppler envelope.
Results
Prevalence of IpcPH, CpcPH, and without PH were 87 (37%), 45 (19%), and 101 (43%), respectively and MSN was observed in 8 (9%) of IpcPH, 17 (38%) of CpcPH, and 1 (1%) of patients without PH. Among the hemodynamic and echocardiographic parameters, mPAP and PAC independently determined occurrence of MSN in all the multivariable models (Table). Interestingly, when the PH patients were dimidiated according to median PAC (3.2 mL/mmHg), 25 out of 102 PH patients (25%) with low PAC showed MSN whereas any of PH patients with high PAC did not (Figure).
Conclusion
MSN was frequently observed in HF patients showing CpcPH. Combination of elevated pressure and reduced compliance of the pulmonary circulation could determine occurrence of MSN in HF.
Determinants of MSN occurrence Univariable analysis Multivariable analysis Model 1 Model 2 Model 3 Model 4 variables OR (95% CI) p OR (95% CI) p OR (95% CI) p OR (95% CI) p OR (95% CI) p LV ejection fraction 0.97 (0.94-0.99) 0.007 1.00 (0.96-1.03) 0.795 LV mass index 1.00 (1.00-1.02) 0.143 PAW pressure 1.13 (1.08-1.18) <0.001 0.92 (0.82-1.03) 0.135 Mean PA pressure 1.14 (1.09-1.19) <0.001 1.08 (1.02-1.14) 0.006 1.15 (1.04-1.27) 0.004 1.08 (1.00-1.17) 0.030 1.07 (1.01-1.14) 0.025 Mean RA pressure 1.14 (1.06-1.22) <0.001 1.00 (0.90-1.11) 0.978 Pulmonary vascular resistance 1.97 (1.45-2.67) <0.001 1.20 (0.88-1.63) 0.225 Pulmonary arterial capacitance 0.27 (0.15-0.48) <0.001 0.49 (0.26-0.92) 0.010 0.44 (0.23-0.85) 0.004 0.47 (0.24-0.93) 0.011 0.49 (0.26-0.93) 0.011 Abstract Figure.
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Affiliation(s)
- Y Chiba
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - H Iwano
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - M Murayama
- Hokkaido University Hospital, Diagnostic Center for Sonography, Sapporo, Japan
| | - S Kaga
- Hokkaido University, Faculty of Health Science, Sapporo, Japan
| | - K Motoi
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - S Ishizaka
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - S Tsujinaga
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - K Kamiya
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - T Nagai
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - T Anzai
- Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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17
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Nagai T, Yokota I, Omote K, Sakuma I, Nakagawa Y, Kamiya K, Kimura T, Nagai R, Anzai T. High-density lipoprotein cholesterol does not predict future cardiovascular events in patients treated with statins for secondary prevention: an observation from the REAL-CAD study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The relation between high-density lipoprotein cholesterol (HDL-C) level after statin therapy and cardiovascular events in patients with stable coronary artery disease remains unclear.
Purpose
We sought to determine the association of the HDL-C level after statin therapy with cardiovascular events in stable coronary artery disease patients.
Methods
This study was a post-hoc analysis of the Randomized Evaluation of Aggressive or Moderate Lipid Lowering Therapy with Pitavastatin in Coronary Artery Disease (REAL-CAD) study, which is randomised, open-label, blinded endpoint, physician-initiated, superiority clinical trial. Enrollment was from January 2010 to March 2013, and follow-up was through January 2016. From the main study, we excluded the patients without either HDL-C data at baseline or 6 months, with occurrence of the primary outcome at 6 months and reported poor adherence for pitavastatin. The primary outcome of interest was a composite of cardiovascular death, non-fatal myocardial infarction, non-fatal ischemic stroke, or unstable angina requiring emergent admission after 6 months from randomisation, consistent with the primary analysis of the trial. We constructed landmark Cox proportional hazards regression models with the 18 selected clinically relevant risk-adjusting variables during the entire follow-up period starting at 6 months after randomisation. Absolute and relative changes of HDL-C level were defined as (6 months value – baseline value) and (absolute change / baseline value) × 100, respectively.
Results
Among 14,774 participants in the REAL-CAD study, 9,221 patients were included in this analysis (7652 [83.0%] male; median [IQR] age, 70 [63–75] years; median [IQR] HDL-C, 49 [42–57] mg/dL; median [IQR] low-density lipoprotein cholesterol [LDL-C], 88 [75–101] mg/dL). During a median follow-up period of 4.0 (IQR 3.2–4.7) years, the primary outcome occurred in 417 (4.5%) patients. There was no significant difference in crude and adjusted cumulative incidence of the primary outcome among the quartiles of HDL-C level at 6 months (Figure 1). The adjusted risks of all the HDL-C related variables (baseline value, 6 months value, absolute and relative changes) for the primary outcome were not significant (Figure 2). Furthermore, the adjusted hazard ratio (HR) as HDL-C level at 6 months increased by 10 mg/dL remained non-significant for the primary outcome for each on-treatment LDL-C level at 6 months (<70 mg/dL [HR 0.97, 95% CI 0.82–1.15], 70–100 mg/dL [HR 1.10, 95% CI 0.98–1.24], and ≥100 mg/dL [HR 0.94, 95% CI 0.78–1.13]). There was also no significant association between HDL-C level at 6 months and the primary outcome both in the low (1 mg/day [HR 1.02, 95% CI 0.91–1.14], increased by 10 mg/dL) dose and high (4 mg/day [HR 1.04, 95% CI 0.91–1.19]) dose pitavastatin groups
Conclusion
After statin therapy with modestly controlled LDL-C, HDL-C level has little prognostic value in patients with stable coronary artery disease.
Funding Acknowledgement
Type of funding source: Foundation. Main funding source(s): The Comprehensive Support Project for Clinical Research of Lifestyle-Related Disease of the Public Health Research Foundation
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Affiliation(s)
- T Nagai
- Hokkaido University, Sapporo, Japan
| | - I Yokota
- Hokkaido University, Sapporo, Japan
| | - K Omote
- Hokkaido University, Sapporo, Japan
| | - I Sakuma
- Hokko Memorial Clinic, Sapporo, Japan
| | - Y Nakagawa
- Shiga University of Medical Science, Otsu, Japan
| | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | - T Kimura
- Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - R Nagai
- Jichi Medical University, Tochigi, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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18
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Kinoshita M, Inoue K, Akazawa Y, Nakagawa H, Sasaki Y, Higashi H, Fujii A, Uetani T, Aono J, Nagai T, Nishimura K, Ikeda S, Yamaguchi O. Impact of right ventricular contractile reserve on exercise capacity in patients with heart failure: clinical application of low-load exercise stress echocardiography. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The peak oxygen uptake (VO2) evaluated by the cardiopulmonary exercise test (CPX) is an established marker of exercise capacity in patients with heart failure (HF). In particular, peak VO2 <14 ml/kg/min is used to be one of the criteria for heart transplantation. However, given exercise intolerance in patients with HF, it is difficult for refractory HF patients to reach sufficient exercise load. A recent report has highlighted significant impact of right ventricular (RV) function on mortality and urgent heart transplantation. Taken together, we hypothesized that the assessment of RV function was helpful to predict exercise capacity by using low-load exercise stress echocardiography (low-load ESE) in patients with HF.
Purpose
We evaluated whether RV dysfunction assessed by the low-load ESE determined a low peak VO2 <14 ml/kg/min in patients with HF.
Methods
We studied 67 consecutive hospitalized patients with HF (mean age, 65 years; 75% male; mean LV ejection fraction, 36%) who underwent ESE and CPX after stabilized HF condition, and the time interval of CPX and ESE tests was within 48 hours. CPX was performed using an upright cycle ergometer by a ramp protocol, while ESE was performed using ergometer in semi-supine position and the workload was generally increased by 25 watts every 3 minutes. The low-load ESE was defined as the 25 watts exercise. The increments of RV s' velocity at tricuspid annulus and RV strain in the free wall were considered as a preservation of RV contractile reserve. Among the study population, 26 patients were performed right heart catheterization and RV dP/dt/Pmax was estimated as an invasive marker of RV contractility.
Results
The achieved intensity of exercise was 50.4±21.0 watts, and all patients completed the low-load ESE. The invasive study showed that the change of RV s' velocity during the low-load ESE significantly correlated with RV dP/dt/Pmax (r=0.706, p<0.001). As shown in Figure, the non-invasive parameters of RV contractile reserve during the low-load ESE were significantly correlated with peak VO2 (RV s' velocity: r=0.787, p<0.001; RV strain: r=0.244, p=0.047). ROC analysis showed that the change of RV s' velocity during the low-load ESE correctly identified patients with peak VO2 <14 ml/kg/min (AUC=0.95, sensitivity 92.3%, specificity 85.2%). In terms of inter- and intra-observer variabilities, ICCs of the change of RV s' velocity were 0.86 and 0.96, and ICCs of the changes of RV strain were 0.63 and 0.70, respectively.
Conclusion
The change of RV s' velocity during the low-load ESE could determine exercise tolerance in patients with HF. The assessment of RV contractile reserve might be clinically useful to discriminate high risk HF patients.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - K Inoue
- Ehime University, Toon, Japan
| | | | | | | | | | - A Fujii
- Ehime University, Toon, Japan
| | | | - J Aono
- Ehime University, Toon, Japan
| | - T Nagai
- Ehime University, Toon, Japan
| | | | - S Ikeda
- Ehime University, Toon, Japan
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19
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Murayama M, Iwano H, Tsujinaga S, Nishino H, Yokoyama S, Nakabachi M, Sarashina M, Ishizaka S, Chiba Y, Okada K, Kaga S, Nishida M, Kamiya K, Nagai T, Anzai T. Simple echocardiographic scoring system to estimate left ventricular filling pressure based on visual assessment of time sequence of mitral and tricuspid valve opening. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1010] [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
Introduction
In the presence of elevated left ventricular (LV) filling pressure, mitral valve (MV) becomes to open early and precedes tricuspid valve (TV) opening in early diastole. Accordingly, time-delay of right ventricular inflow relative to LV inflow assessed by dual Doppler system was recently reported as a parameter of LV filling pressure. We assumed that visually-assessed time-delay of TV relative to MV opening could be a simple and alternative marker of elevated LV filling pressure.
Purpose
This study aimed to elucidate the clinical usefulness of the 2-dimensional echocardiographic scoring system, Visual assessment of time-difference between Mitral and Tricuspid valve opening (VMT) score, in patients with heart failure (HF).
Methods
We analyzed 119 consecutive HF patients who underwent echocardiography and cardiac catheterization within a day. Elevated LV filling pressure was defined as mean pulmonary arterial wedge pressure (PAWP) ≥15 mmHg. LV diastolic function was graded according to the ASE/EACVI recommendations. Time sequence of opening of MV and TV was visually assessed in the apical 4-chamber view and scored to 3 grades (0: TV opening first, 1: simultaneous, 2: MV opening first). When the inferior vena cava diameter was >21 mm and collapsed <20% during normal respiration, 1 point was added and VMT score was calculated as 4 grades from 0 to 3. We also investigated 113 patients without worsening HF at VMT scoring for cardiac events defined as worsening HF, LV assist device implantation, or cardiac death for 1 year after the echocardiography.
Results
VMT was scored as 0 in 20 patients, 1 in 50 patients, 2 in 37 patients, and 3 in 12 patients. PAWP was elevated in patients with VMT score of 2 and 3 (0: 10±5, 1: 12±4, 2: 22±8, 3: 28±4 mmHg, ANOVA P<0.001) (Figure). In overall patients, VMT≥2 predicted elevated PAWP with accuracy of 86%. When the accuracy was tested in patients with reduced (<40%, HFrEF) and preserved LV ejection fraction (≥40%) respectively, the accuracy was excellent in HFrEF (96% and 77%, respectively). Importantly, VMT≥2 also had good accuracy of 82% for elevated PAWP in 33 patients in whom recommendations usually cannot grade diastolic function due to monophasic LV inflow. In the sequential Cox models, the addition of VMT score to the model including the plasma brain natriuretic peptide (BNP) level and LV diastolic grading improved the predictive power for elevated PAWP (P<0.001). During the follow-up, 20 cardiac events were observed (6 worsening HF, 9 LV assist device implantation and 5 cardiac death). Kaplan-Meier analysis showed that the patients with VMT≥2 were at higher risk of cardiac events than those with VMT≤1 (log-rank test P<0.001) (Figure).
Conclusions
The VMT score was a simple and accurate marker of elevated LV filling pressure and has an incremental benefit over BNP and LV diastolic function grading. Moreover, it could be a novel prognostic marker in patients with HF.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- M Murayama
- Hokkaido University Hospital, Sapporo, Japan
| | - H Iwano
- Hokkaido University Hospital, Sapporo, Japan
| | - S Tsujinaga
- Hokkaido University Hospital, Sapporo, Japan
| | - H Nishino
- Hokkaido University Hospital, Sapporo, Japan
| | - S Yokoyama
- Hokkaido University Hospital, Sapporo, Japan
| | - M Nakabachi
- Hokkaido University Hospital, Sapporo, Japan
| | - M Sarashina
- Hokkaido University Hospital, Sapporo, Japan
| | - S Ishizaka
- Hokkaido University Hospital, Sapporo, Japan
| | - Y Chiba
- Hokkaido University Hospital, Sapporo, Japan
| | - K Okada
- Hokkaido University, Sapporo, Japan
| | - S Kaga
- Hokkaido University, Sapporo, Japan
| | - M Nishida
- Hokkaido University Hospital, Sapporo, Japan
| | - K Kamiya
- Hokkaido University Hospital, Sapporo, Japan
| | - T Nagai
- Hokkaido University Hospital, Sapporo, Japan
| | - T Anzai
- Hokkaido University Hospital, Sapporo, Japan
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20
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Kobayashi Y, Nagai T, Kamiya K, Konishi T, Sato T, Omote K, Kato Y, Komoriyama H, Tsujinaga S, Iwano H, Kusano K, Yasuda S, Ogawa H, Ueda H, Anzai T. Long-term prognostic significance of dispersion of ventricular repolarization in patients with cardiac sarcoidosis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although the presence of cardiac involvement is recognised as a determinant of worse clinical outcomes in sarcoidosis patients, the determinants of adverse outcomes in patients with cardiac sarcoidosis (CS) have not been well understood. T-peak to T-end interval (TpTe) on the surface electrocardiogram (ECG) was proposed as a marker of dispersion of ventricular repolarisation. Prolonged TpTe to QT interval ratio (TpTe/QT) represents a period of potential vulnerability to reentrant ventricular arrhythmias. Notably, prolonged TpTe/QT has been associated with increased risk of mortality in hypertrophic cardiomyopathy, congenital long-QT syndrome, and Brugada syndrome. However, its prognostic implication in patients with CS is unclear.
Purpose
We sought to investigate whether TpTe/QT was associated with long-term clinical outcomes in patients with CS.
Methods
A total of 108 consecutive CS patients between August 1986 and March 2019 in two academic hospitals who had ECG data before initiation of immunosuppressive therapy were examined. We excluded patients who received pacemaker (n=15) or cardiac resynchronization therapy (n=3) at the time of ECG. Ultimately, 90 CS patients were included in this study. All standard 12-lead ECGs were recorded at 25 mm/s with an amplification of 10 mm/mV. TpTe was measured from the peak of T wave to the end of T wave which defined as the intersection of the tangent to the down slope of the T wave and the isoelectric line. Lead V5 was selected for the analyses. If V5 is not suitable for analyses, V4 was selected. The primary outcome was the composite of advanced atrioventricular block (AVB), ventricular tachycardia or ventricular fibrillation (VT/VF), heart failure hospitalisation and all-cause death.
Results
During a median follow-up period of 4.70 (interquartile range [IQR] 2.06–7.23) years, adverse events occurred in 21 patients (23.3%), including 2 advanced AVB, 12 VT/VF, 4 heart failure hospitalisation and 3 all-cause death. Events group had higher TpTe/QT compared to no events group (0.231 [IQR 0.193–0.261] vs. 0.282 [IQR 0.263–0.304] P<0.001). Kaplan-Meier analyses revealed that the primary outcome, especially VT/VF or sudden cardiac death more frequently occurred in patients with higher TpTe/QT (≥0.242, the median) compared to those with lower TpTe/QT (Figure 1). Multivariable Cox regression analysis showed that higher TpTe/QT was independently associated with increased subsequent risk of adverse events (hazard ratio 1.09, 95% confidence interval [CI] 1.02–1.17, P=0.014) even after adjustment for age, sex and left ventricular ejection fraction. Furthermore, the optimal cut-off value of TpTe/QT for the discriminatory of primary outcome was 0.257, and c-index was 0.77 (95% CI 0.64–0.89).
Conclusions
Higher TpTe/QT was associated with worse long-term clinical outcomes in patients with CS. Our findings indicate the importance of assessing TpTe/QT for risk stratification in patients with CS.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Kobayashi
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Konishi
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Sato
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Omote
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Komoriyama
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - S Tsujinaga
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Kusano
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Osaka, Japan
| | - S Yasuda
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Osaka, Japan
| | - H Ogawa
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Osaka, Japan
| | - H Ueda
- National Cerebral and Cardiovascular Center Hospital, Department of Clinical Pathology, Osaka, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
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21
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Yamaguchi T, Nakai M, Sumita Y, Nishimura K, Nagai T, Anzai T, Sakata Y, Ogino H. Impact of Endovascular Repair on the Outcomes of Octogenarians with Ruptured Abdominal Aortic Aneurysms: A Nationwide Japanese Study. J Vasc Surg 2020. [DOI: 10.1016/j.jvs.2020.01.026] [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: 10/25/2022]
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22
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Horinouchi H, Nagai T, Ohno Y, Murakami T, Miyamoto J, Sakai K, Okada K, Nakazawa G, Yoshioka K, Ikari Y. P295 Impact of Pre-existing Mitral Regurgitation on the Mid-Term Left Ventricular Mass Regression following Transcatheter Aortic Valve Implantation for Aortic Valve Stenosis. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.148] [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
Transcatheter aortic valve implantation (TAVI) results in an immediate and greater aortic pressure gradient improvement in patients with severe aortic valve stenosis (AS), and induces early left ventricular (LV) mass regression, which may be related to favorable effects on the mid to long term outcomes. However, the extent of LV mass regression after unloading of chronic pressure overload is varying, and its determinants are still unknown. Thus, the study aims to identify echocardiographic determinants of LV mass regression following TAVI.
Methods
We retrospectively screened all TAVI procedures in symptomatic AS from 2017 to 2019, and selected 74 successful TAVI cases that had serial echocardiographic studies both at the baseline and at the mid-term follow-up (4 to 6 months after the procedure). Through the digitalized medical records, clinical and echocardiographic data as well as angiographic grading (0-3) of post-procedure paravalvular leakage (PVL) were obtained. LV mass was calculated by using Cube formula. Thus, the extent of LV mass regression was defined as the differences of left ventricular mas index (LVMI) between at the baseline and at the follow-up (ΔLVMI). Quantification of the baseline mitral valve regurgitant volume was performed by stroke volume method with pulmonic site measurement on the assumption of no pre-existing intra/extra cardiac shunt. Cases with prior mitral valve replacement were excluded.
Results
At the post-procedure angiogram, only 3 cases had significant PVL (grade 2≤). At the mid-term follow–up, average LVMI decreased significantly from the baseline (165 ± 38 g/m2vs 140 ± 37 mg/ m2, P < 0.0001) and 57 cases (70%) experienced the reduction of LVMI, although average relative wall thickness (2 × posterior wall thickness/left ventricular diastolic dimension) did not change (0.565 ± 0.135 vs 0.586 ± 0.168, P = 0.314). Among the baseline clinical and echocardiographic variables, the baseline peak A wave velocity, E/A ratio, mitral valve regurgitant volume and LVMI revealed simple correlation with ΔLVMI (γ=-0.298, p = 0.0188;γ=0.251, P = 0.0417;γ=0.354, p = 0.0041;γ=0.375, p < 0.0010; respectively), whereas no correlation was observed in angiographic PVL grade. Stepwise multiple regression analysis demonstrated baseline mitral valve regurgitant volume and LVMI as the determinants of ΔLVMI (β=0.344, p = 0.032; β=0.335 P < 0.0001; respectively).
Conclusions
Pre-existing mitral regurgitation has an impact on the mid–term left ventricular mass regression following TAVI. In severe AS, mitral regurgitation might be functioning as an afterload adjuster, and thus, produces protective effects on LV structure.
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Affiliation(s)
| | - T Nagai
- Tokai University School of Medicine, Kanagawa, Japan
| | - Y Ohno
- Tokai University School of Medicine, Kanagawa, Japan
| | - T Murakami
- Tokai University School of Medicine, Kanagawa, Japan
| | - J Miyamoto
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Sakai
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Okada
- Tokai University School of Medicine, Kanagawa, Japan
| | - G Nakazawa
- Tokai University School of Medicine, Kanagawa, Japan
| | - K Yoshioka
- Tokai University School of Medicine, Kanagawa, Japan
| | - Y Ikari
- Tokai University School of Medicine, Kanagawa, Japan
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23
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Tanida K, Takeuchi S, Miyagawa S, Ikeda M, Katada N, Nagai T, Lee R, Phuphaibul R, Niles J, Li Y, Su I, Lee P. Comparison of daytime sleepiness among early adolescents in six Asia Pacific regions. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Omote K, Nagai T, Kamiya K, Aikawa T, Tsujinaga S, Kato Y, Komoriyama H, Kobayashi Y, Iwano H, Yamamoto K, Yoshikawa T, Saito Y, Anzai T. P2634Prognostic value of admission left ventricular outflow tract velocity time integral in hospitalized heart failure patients with preserved ejection fraction: a report from the JASPER registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There are little effective treatment strategies for heart failure with preserved ejection fraction (HFpEF) to achieve a reduction of morbidity and mortality. Thus, accurate prognostication of patients with HFpEF could help improve their outcomes by identifying high-risk patients who might potentially benefit from intensive inpatient and outpatient monitoring and early referral for advanced HFpEF therapy. The left ventricular outflow tract velocity time integral (LVOT-VTI) is a representative non-invasive parameter for evaluating stroke volume, which can be a determinant of adverse outcomes in hospitalized patients with heart failure. However, the prognostic implication of admission LVOT-VTI for hospitalized HFpEF patients is undetermined.
Purpose
The aim of the present study was to investigate whether admission LVOT-VTI could predict poor clinical outcomes in hospitalized patients with HFpEF.
Methods
We examined consecutive 535 hospitalized HFpEF patients (left ventricular ejection fraction ≥50%) due to acute decompensated heart failure from the JASPER (JApanese heart failure Syndrome with Preserved Ejection fRaction) multicenter registry, obtained between November 2012 and March 2015. Patients without accessible LVOT-VTI data on admission were excluded. Finally, 214 patients were examined. The primary outcome of interest was composite of all-cause death and rehospitalization due to heart failure.
Results
Mean age was 78±11 years, 100 were male, and median plasma brain-type natriuretic peptide level was 400 (interquartile range [IQR] 223–711) pg/ml. During a median follow-up period of 688 (IQR 162–810) days, adverse events occurred in 83 patients (39%), including 47 (22%) all-cause death, 51 (24%) rehospitalization due to heart failure. The c-index of LVOT-VTI for predicting the composite of adverse events was 0.59 (95% CI 0.51 to 0.67), and the optimal cut-off value of LVOT-VTI was 15.8 cm. Low LVOT-VTI (≤15.8 cm) was significantly associated with higher adverse events compared to high LVOT-VTI (>15.8 cm) (Figure). Multivariable Cox regression analysis revealed that lower LVOT-VTI was an independent determinant of adverse events (HR 0.94, 95% CI 0.91 to 0.98, P=0.005) even after adjustment for pre-specified confounders including age, sex, systolic blood pressure, serum sodium, albumin, plasma brain-type natriuretic peptide and renal function.
Figure 1
Conclusions
Lower admission LVOT-VTI was an independent determinant of worse clinical outcomes in hospitalized HFpEF patients, indicating that LVOT-VTI on admission could be a useful marker for risk stratification in these patients.
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Affiliation(s)
- K Omote
- Hokkaido University, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Sapporo, Japan
| | - T Aikawa
- Hokkaido University, Sapporo, Japan
| | | | - Y Kato
- Hokkaido University, Sapporo, Japan
| | | | | | - H Iwano
- Hokkaido University, Sapporo, Japan
| | - K Yamamoto
- Tottori University, Department of Molecular Medicine and Therapeutics, Tottori, Japan
| | - T Yoshikawa
- Sakakibara Heart Institute, Department of Cardiology, Tokyo, Japan
| | - Y Saito
- Nara Medical University, First Department of Internal Medicine, Nara, Japan
| | - T Anzai
- Hokkaido University, Sapporo, Japan
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25
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Kobayashi Y, Omote K, Nagai T, Koyanagawa K, Aikawa T, Manabe O, Kamiya K, Kato Y, Komoriyama H, Ohira H, Tsujino I, Tamaki N, Anzai T. 4089Prognostic value of cardiac metabolic activity assessed by 18F-FDG PET in patients with cardiac sarcoidosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0101] [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
Sarcoidosis is a systemic granulomatous disease that affects multiple organs. Among these,the presenceof cardiac involvementis recognized as a determinant of worse clinical outcomes. 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) is a valuable modality for detecting active inflammatory lesions associated with cardiac sarcoidosis (CS). Generally,the maximum standardized uptake value (SUV) is suitable for evaluating disease activity in CS, but this quantitative method had limitations because it does not integrate both volume and intensity of FDG uptake simultaneously. Cardiac metabolic activity (CMA), which is quantitative measures of FDG volume-intensity, could be a diagnostic tool in the evaluation of CS. However, its prognostic implication in patients with CS is unclear.
Purpose
We sought to investigate whether CMA assessed by FDG-PET was associated with long-term worse clinical outcomes in patients with CS.
Methods
A total of 76 consecutive patients suspected CS who underwent FDG-PET between January 2010 and April 2018 in our university hospital were registered. We excluded patients whodid not meet the Japanese Ministry of Health and Welfare 2007 criteria (n=9) and those who received oral corticosteroids at the time of FDG-PET (n=5). Ultimately, 62 CS patients with definitively diagnosed were included in this study.We used a dedicated software to analyze SUV. Cardiac metabolic volume (CMV) was defined as the volume within the boundary determined by the threshold (SUV mean of blood pool × 1.5). CMA was calculated by multiplying CMV by SUV mean. The primary outcome of interest was the composite of advanced atrioventricular block, ventricular tachycardia, ventricular fibrillation, heart failure hospitalization, and all-cause death.
Results
During a median follow-up period of 1287 (IQR 806–1809) days after the first FDG-PET, the adverse events occurred in 12 patients (19%). Events group had significantly higher CMA compared to no events group (83 [IQR 11–330] vs. 354 [IQR 70–577]) (Figure A). Based on ROC analysis, the optimal cut-off value of CMA for the discrimination of the adverse events was 244 ml, and c-index was 0.71 (95% CI, 0.55–0.87). Patients with high CMA (≥244 ml, n=23) had lower LVEF, and higher prevalence of New York Heart Association functional class III or IV, and higher plasma BNP level compared to those with low CMA (<244 ml, n=39). Kaplan-Meier analysis revealed that composite adverse events more frequently occurred in patients with high CMA compared to those with low CMA (Figure B).Univariable Cox regression analysis showed that higher CMA was associated with increased subsequent risk of adverse events (HR 1.47, 95% CI 1.06–2.24).
Conclusions
Higher CMA assessed by FDG-PET was associated with worse clinical long-term outcomes in patients with CS, suggesting that measurement of the volume-intensity of abnormal FDG uptake may be useful for risk stratification in patients with CS.
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Affiliation(s)
| | - K Omote
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - K Koyanagawa
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - T Aikawa
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - O Manabe
- Hokkaido University, Department of Nuclear Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Komoriyama
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - H Ohira
- Hokkaido University, First Department of Medicine, Sapporo, Japan
| | - I Tsujino
- Hokkaido University, First Department of Medicine, Sapporo, Japan
| | - N Tamaki
- Kyoto Prefectural University of Medicine, Department of Radiology, Kyoto, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
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26
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Kanda M, Nagai T, Kondou N, Tateno K, Hirose M, Akazawa H, Komuro I, Kobayashi Y. P5370Pulmonary pressure overload stimulates cardiac stem or progenitor cell-derived cardiac regeneration in the right ventricular area. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction and purpose
The number of patients with right heart failure due to pulmonary hypertension has been increasing. Although several drugs have reportedly improved pulmonary hypertension, no treatments have been established for decompensated right heart failure. The heart has an innate ability to regenerate, and cardiac stem or progenitor cells (e.g., side population [SP] cells) have been reported to contribute to the regeneration process. However, their contribution to right ventricular pressure overload has not been clarified. Here, this regeneration process was evaluated using a genetic fate-mapping model.
Methods and results
We used Cre-LacZ mice, in which more than 99.9% of the cardiomyocytes in the left ventricular field were positive for 5-bromo-4-chloro-3-indolyl-β-D-galactoside (X-gal) staining immediately after tamoxifen injection. Then, we performed either a pulmonary binding (PAB) or sham operation on the main pulmonary tract. In the PAB-treated mice, the right ventricular cavity was significantly enlarged (right-to-left ventricular [RV/LV] ratio, 0.24±0.04 in the sham group and 0.68±0.04 in the PAB group). Increased peak flow velocity in the PAB group (1021±80 vs 1351±62 mm/sec) was confirmed by echocardiography. One month after the PAB, the PAB-treated mice had more X-gal-negative (newly generated) cells than the sham mice (94.8±34.2 cells/mm2 vs 23.1±10.5 cells/mm2; p<0.01). The regeneration was biased in the RV free wall (RV free wall, 225.5±198.7 cells/mm2; septal area, 88.9±56.5/mm2; LV lateral area, 46.8±22.0/mm2; p<0.05). To examine the direct effects of PAB on the cardiac progenitor cells, bromodeoxyuridine was administered to the mice daily until 1 week after the PAB operation. Then, the hearts were isolated and SP cells were harvested. The SP cell population increased from 0.65±0.23% in the sham mice to 1.87% ± 1.18% in the PAB-treated mice. Immunostaining analysis revealed a significant increase in the number of BrdU-positive SP cells, from 11.6±2.0% to 44.0±18%, therefore showing SP cell proliferation.
Conclusions
Pulmonary pressure overload stimulated cardiac stem or progenitor cell-derived regeneration with a RV bias, and SP cell proliferation may partially contribute to this process.
Acknowledgement/Funding
JSPS KAKENHI Grant Number JP 17K17636, GSK Japan Research Grant 2016
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Affiliation(s)
- M Kanda
- Chiba University Hospital, cardiology, Chiba, Japan
| | - T Nagai
- International University of Health and Welfare, Department of Cardiology, School of Medicine, Narita, Japan
| | - N Kondou
- Chiba University Hospital, cardiology, Chiba, Japan
| | - K Tateno
- Chiba University Hospital, cardiology, Chiba, Japan
| | - M Hirose
- Chiba University Hospital, cardiology, Chiba, Japan
| | - H Akazawa
- University of Tokyo, cardiology, Tokyo, Japan
| | - I Komuro
- University of Tokyo, cardiology, Tokyo, Japan
| | - Y Kobayashi
- Chiba University Hospital, cardiology, Chiba, Japan
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27
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Kondo N, Nagai T, Aoki I, Kanda M, Takahashi T, Kobayashi Y. P6298Pericardial transplantation of adipose-derived stromal cells with self-assembling peptides scaffold prevents cardiac remodeling after myocardial infarction in mice. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0896] [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
Introduction and purpose
Cardiac cell therapy to patients with heart failure after myocardial infarction (MI), has shown little improvement in cardiac function. The rate of engraftment after cell transplantation (TX) to the ischemic heart is low because of the leakage of transplanted cells without scaffold, the friction between the graft and thorax, and poor vascularization to the graft. We created a novel TX method (Figure 1) to transplant adipose-derived stromal cells (ASCs) with scaffold into the pericardial space where the pericardium protected the graft. We evaluated the therapeutic efficacy of pericardial TX of ASCs on the cardiac function and remodeling after MI.
Methods
We isolated ASCs from the brown adipose tissue of donor mice (C57BL6-Tg (CAG-EGFP), five weeks). ASCs increased and differentiated into spontaneously beating myocytes, endothelial cells, and pericytes three weeks after ex vivo culture. Cells were trypsinized and mixed with self-assembling peptides scaffold. Each graft (100μl gel scaffold) had 1×106 ASCs. To make recipient MI mice (C57BL6, 12 weeks), we ligated the left coronary artery through small chest incision without cutting rib bone to avoid postoperative adhesions. We confirmed the deterioration of cardiac function by echocardiography (n=21) and MRI (n=4) three weeks after MI. Then, recipient MI mice had TX (syngeneic, no immunosuppression). We opened the pericardium and transplanted the graft into the pericardial space. By suturing the pericardium, the graft was fixed on the MI scar area (Figure 1). We labeled donor cells with GFP and the scaffold with biotin. We evaluated cardiac function of TX group (n=10) and control group (MI with sham TX, n=11) by echocardiography.
Results
In the scaffold, donor cells increased three days to two weeks after TX, and slightly decreased four weeks after TX. The graft thickness was 0.9±0.2mm (two weeks after TX) and 0.7±0.2mm (four weeks after TX). There were many vWF positive vessels in the scaffold and some of which were GFP positive. Echocardiography showed that left ventricular diastolic dimension (LVDd) of TX group, did not increase four weeks after TX (ΔLVDd = −0.02mm, P=0.80). While, LVDd of control group significantly increased (ΔLVDd = +0.23mm, P=0.02) due to cardiac remodeling after MI. MRI confirmed the increase in left ventricular wall thickness in the MI scar area up to 4 weeks in TX group (n=2).
Conclusions
Pericardial transplantation of ASCs prevents cardiac remodeling. Its beneficial effect might be mediated by improved rate of engraftment, neovascularization, and increased ventricular wall thickness in the MI scar area.
Acknowledgement/Funding
Grants-in-Aid for Scientific Research
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Affiliation(s)
- N Kondo
- Chiba University Graduate School of Medicine, Cardiology, Chiba, Japan
| | - T Nagai
- International University of Health and Welfare, Cardiology, Chiba, Japan
| | - I Aoki
- National Institute of Radiological Sciences, Department of Molecular Imaging and Theranostics, Chiba, Japan
| | - M Kanda
- Chiba University Graduate School of Medicine, Cardiology, Chiba, Japan
| | - T Takahashi
- Chiba University Graduate School of Medicine, Cardiology, Chiba, Japan
| | - Y Kobayashi
- Chiba University Graduate School of Medicine, Cardiology, Chiba, Japan
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28
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Taniguchi T, Mochihashi D, Nagai T, Uchida S, Inoue N, Kobayashi I, Nakamura T, Hagiwara Y, Iwahashi N, Inamura T. Survey on frontiers of language and robotics. Adv Robot 2019. [DOI: 10.1080/01691864.2019.1632223] [Citation(s) in RCA: 12] [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: 01/09/2023]
Affiliation(s)
- T. Taniguchi
- Department of Information Science and Engineering, Ritsumeikan University, Kusatsu, Japan
| | - D. Mochihashi
- The Institute of Statistical Mathematics, Tachikawa, Japan
- SOKENDAI (The Graduate University for Advanced Studies), Tokyo, Japan
| | - T. Nagai
- Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, Japan
| | - S. Uchida
- Faculty of Languages and Cultures, Kyushu University, Fukuoka, Japan
| | - N. Inoue
- Graduate School of Information Sciences, Tohoku University, Sendai, Japan
- RIKEN Center for Advanced Intelligence Project, Chuo-ku, Japan
| | - I. Kobayashi
- Advanced Sciences, Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo, Japan
| | - T. Nakamura
- Department of Mechanical Engineering and Intelligent Systems, The University of Electro-Communications, Chofu, Japan
| | - Y. Hagiwara
- Department of Information Science and Engineering, Ritsumeikan University, Kusatsu, Japan
| | - N. Iwahashi
- Department of Information and Communication Engineering, Okayama Prefectural University, Okayama, Japan
| | - T. Inamura
- SOKENDAI (The Graduate University for Advanced Studies), Tokyo, Japan
- National Institute of Informatics, Tokyo, Japan
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29
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Konno-Kumagai T, Fujishima F, Nakamura Y, Nakano T, Nagai T, Kamei T, Sasano H. Programmed death-1 ligands and tumor infiltrating T lymphocytes in primary and lymph node metastasis of esophageal cancer patients. Dis Esophagus 2019; 32:5066745. [PMID: 30085020 DOI: 10.1093/dote/doy063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neoadjuvant chemotherapy (NAC) is administered to many patients with esophageal squamous cell carcinoma (ESCC) prior to surgery, but it is also true that some of these patients demonstrated no response to the therapy following surgery. In addition, the prognosis of advanced case such as ESCC patients with lymph node metastasis has remained relatively low. Programmed death ligand-1 (PD-L1) in conjunction with tumor-infiltrating lymphocytes (TILs) has been studied as a potential mechanism of "immune escape" in several human malignancies. Therefore, in this study, we studied PD-L1 status in carcinoma cells and forkhead box protein 3 (FOXP3) and CD8 status among TILs in the residual tumors of primary and metastatic sites following NAC. We also studied the association of these factors with the clinicopathological findings in 44 patients with ESCC harboring lymph node metastasis. There was discordance in the pathological response to chemotherapy between the primary tumor and lymph node metastasis, and histologically identified resistance to NAC in lymph node metastases tended to be correlated with an adverse clinical outcome (P = 0.0765) than resistance in the primary tumor. Both univariate and multivariate analyses for disease-specific survival (DSS) revealed that the PD-L1 status of carcinoma cells in metastatic lymph nodes and a higher FOXP3/CD8 ratio in the primary tumor were both significantly correlated with an eventual adverse clinical outcome of the patients (P = 0.0178, P = 0.0463, respectively). These results all indicated that the PD-L1 status of carcinoma cells in metastatic lymph nodes and the FOXP3/CD8 ratio in primary tumors could predict eventual clinical outcomes in ESCC patients with NAC.
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Affiliation(s)
- T Konno-Kumagai
- Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine.,Department of Pathology, Tohoku University Hospital
| | - F Fujishima
- Department of Pathology, Tohoku University Hospital
| | - Y Nakamura
- Division of Pathology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University
| | - T Nakano
- Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine
| | - T Nagai
- School of Medicine, Tohoku University, Miyagi, Japan
| | - T Kamei
- Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine
| | - H Sasano
- Department of Pathology, Tohoku University Hospital
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30
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Somfai T, Nguyen HT, Men NT, Dang-Nguyen TQ, Kaneko H, Noguchi J, Nagai T, Kikuchi K. 36 The effects of E-64 on the developmental competence of porcine oocytes vitrified at the germinal vesicle stage. Reprod Fertil Dev 2019. [DOI: 10.1071/rdv31n1ab36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Previous studies reported the activation of the apoptotic cascade by vitrification in mature porcine oocytes (Vallorani et al. 2012 Anim. Reprod. Sci. 135, 68-74) and that the cathepsin B inhibitor E-64 improved developmental competence of bovine oocytes via an antiapoptotic effect (Balboula et al. 2013 Reproduction 146, 407-417). The present study was carried out to test whether E-64 affected the developmental competency of porcine oocytes vitrified at the germinal vesicle stage. Cumulus-enclosed porcine oocytes were vitrified in microdrops and warmed by our method (Somfai et al. 2015 J. Reprod. Dev. 61, 571-579). Then, the oocytes were subjected to in vitro maturation (IVM) for 46h in a chemically defined porcine oocyte medium supplemented with 10ng mL−1 of epidermal growth factor, 10IU mL−1 of eCG, and 10IU mL−1 of hCG and during the first 22h of IVM with 1mM dibutyryl cyclic adenosine monophosphate. Then, cumulus-oocyte complexes were fertilized in vitro and presumptive zygotes were cultured in 50-µL drops of porcine zygote medium-3 for 7 days in 6-well dishes covered by paraffin oil in an atmosphere of 5% CO2, 5% O2, and 90% N2 at 39°C. On Day 5 (Day 0=IVF), the porcine zygote medium-3 was supplemented with 10% (vol/vol) FCS. The effects of 1.0μM of E-64 supplementation during IVM of non-vitrified and vitrified cumulus-oocyte complexes were investigated in a 2×2 factorial design. Survival rates after IVM, cleavage rates on Day 2, blastocyst rates, and total cell numbers in blastocysts on Day 7 were compared among groups. The experiment was replicated 5 times. Results were analysed by ANOVA and Tukey’s multiple comparison test. The percentages of live oocytes were statistically similar when oocytes were matured in the absence or presence of E-64 both in non-vitrified (99.2% v. 99.6%, respectively) and vitrified (94.3% v. 90.8%, respectively) groups. Similarly, IVM without or with E-64 supplementation had no effect on subsequent cleavage and blastocyst development rates in non-vitrified (67.4% v. 71.2% and 38.7% v. 43.2%, respectively) and vitrified (46.8% v. 48.8% and 14.6% v. 22.8%, respectively) oocytes. Irrespective of E-64 treatment, all survival and developmental rates in the vitrified groups were significantly lower (P<0.05) compared with those of their non-vitrified counterparts except for the blastocyst development rate in the E-64-treated vitrified group, which did not differ significantly from those of the non-vitrified groups with or without E-64 treatment. There was no statistical difference in mean blastocyst cell numbers among the groups, ranging between 86.5±15.8 and 118±10.6. In conclusion, E-64 treatment had no effect on embryo production rates, which suggests that in our system, cathepsin-mediated apoptosis during IVM might not be the factor to limit embryo production using either fresh oocytes or those vitrified at the immature stage.
This work was supported by JST/JICA SATREPS.
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31
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Nagai T, Hane K. Silicon photonic microelectromechanical switch using lateral adiabatic waveguide couplers. Opt Express 2018; 26:33906-33917. [PMID: 30650822 DOI: 10.1364/oe.26.033906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
A silicon photonic waveguide switch using adiabatic couplers with lateral comb-drive actuators is designed, fabricated, and tested for microelectromechanical optical matrix switch. One of the waveguides of the adiabatic coupler is moved laterally by three actuators for varying the coupler gap, which enables to switch the path of the waveguides. The coupler waveguides with 250 nm thickness consist of a movable tapered waveguide from 400 nm to 500 nm in width and 50 μm in length and a straight waveguide of 400 nm in width. The three actuators are ultra-small electrostatic comb-drive and move the two movable tapered waveguides. The switch's transmission characteristics were measured as a function of the coupler gap. Around a coupler gap of 109 nm, the port isolation of 16.7 dB was obtained. The switch's insertion loss was roughly estimated to be less than 1 dB. The switching time was 36.7 μsec under the present experimental condition. Moreover, 64 switches were arrayed in a 125 μm period square mash waveguide and an 8 x 8 matrix switch was composed. The matrix switch was also tested.
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32
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Funabashi S, Nagai T, Nakano H, Iwakami N, Honda S, Sugano Y, Asaumi Y, Aiba T, Izumi C, Noguchi T, Kusano K, Yokoyama H, Yasuda S, Ogawa H, Anzai T. P3435Long-term prognostic significance of renal tubular damage, as assessed by urinary Nacetyl-beta-D-glucosamidase, on admission in patients with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3435] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S Funabashi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Nagai
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Nakano
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - N Iwakami
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - S Honda
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - Y Sugano
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - Y Asaumi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Aiba
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - C Izumi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Noguchi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - K Kusano
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Yokoyama
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - S Yasuda
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Ogawa
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Anzai
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
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Omote K, Nagai T, Asakawa N, Komoriyama H, Kato Y, Aikawa T, Tokuda Y, Kamiya K, Nishida M, Kudo Y, Fukushima A, Iwano H, Yokota T, Anzai T. P2812Long-term prognostic significance of liver stiffness non-invasively measured by the virtual touch quantification in patients with acute decompensated heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2812] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Omote
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - N Asakawa
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Komoriyama
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Aikawa
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Tokuda
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - M Nishida
- Hokkaido University, Diagnostic Center for Sonography and Division of Laboratory and Transfusion Medicine, Hokkaido Unive, Sapporo, Japan
| | - Y Kudo
- Hokkaido University, Diagnostic Center for Sonography and Division of Laboratory and Transfusion Medicine, Hokkaido Unive, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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Hamatani Y, Nagai T, Honda Y, Nakano H, Honda S, Iwakami N, Asaumi Y, Aiba T, Noguchi T, Kusano K, Yokoyama H, Toyoda K, Yasuda S, Ogawa H, Anzai T. P6385Impact of admission plasma D-dimer level on short-term risk of ischemic stroke in hospitalized patients with acute heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6385] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y Hamatani
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Nagai
- Hokkaido University Graduate School of Medicine, Cardiovascular Medicine, Hokkaido, Japan
| | - Y Honda
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Nakano
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - S Honda
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - N Iwakami
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - Y Asaumi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Aiba
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Noguchi
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - K Kusano
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Yokoyama
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - K Toyoda
- National Cerebral and Cardiovascular Center, Cerebrovascular Medicine, Osaka, Japan
| | - S Yasuda
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - H Ogawa
- National Cerebral and Cardiovascular Center, Cardiovascular Medicine, Osaka, Japan
| | - T Anzai
- Hokkaido University Graduate School of Medicine, Cardiovascular Medicine, Hokkaido, Japan
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35
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Omote K, Nagai T, Asakawa N, Aikawa T, Tokuda Y, Kato Y, Kamiya K, Komoriyama H, Nishida M, Kudo Y, Fukushima A, Iwano H, Yokota T, Anzai T. P3734Clinical value of a non-invasive measurement of increased liver stiffness by using virtual touch quantification for predicting elevated right atrial pressure in heart failure patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3734] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Omote
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - N Asakawa
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Aikawa
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Tokuda
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Kato
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Kamiya
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Komoriyama
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - M Nishida
- Hokkaido University, Diagnostic Center for Sonography and Division of Laboratory and Transfusion Medicine, Sapporo, Japan
| | - Y Kudo
- Hokkaido University, Diagnostic Center for Sonography and Division of Laboratory and Transfusion Medicine, Sapporo, Japan
| | - A Fukushima
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - H Iwano
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Yokota
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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36
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Okuno K, Naito Y, Asakura M, Sugahara M, Ando T, Nagai T, Saito Y, Yoshikawa T, Masuyama T, Anzai T. P5648Appropriate hemoglobin levels in HFpEF patients: results of Japanese heart failure syndrome with preserved ejection fraction (JASPER) registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5648] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Okuno
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - Y Naito
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - M Asakura
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - M Sugahara
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Ando
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - Y Saito
- Nara Medical University, First Department of Internal Medicine, Nara, Japan
| | - T Yoshikawa
- Sakakibara Memorial Hospital, Department of Cardiology, Tokyo, Japan
| | - T Masuyama
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
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37
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Marume K, Takashio S, Nagai T, Tsujita K, Saito Y, Yoshikawa T, Anzai T. P6501The effect of statin on mortality in patients with heart failure with preserved ejection fraction without coronary artery disease - a report from the JASPER study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6501] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Marume
- Kumamoto University Hospital, Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto, Japan
| | - S Takashio
- Kumamoto University Hospital, Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto, Japan
| | - T Nagai
- Hokkaido University, cardiovascular medicine, Sapporo, Japan
| | - K Tsujita
- Kumamoto University Hospital, Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto, Japan
| | - Y Saito
- Nara Medical University, First Department of Internal Medicine, Nara, Japan
| | - T Yoshikawa
- Sakakibara Heart Institute, Department of Cardiology, Tokyo, Japan
| | - T Anzai
- Hokkaido University, cardiovascular medicine, Sapporo, Japan
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38
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Nagai T, Iwakami N, Nakai M, Nishimura K, Sumita Y, Mizuno A, Tsutsui H, Ogawa H, Anzai T. 4362Effect of intravenous carperitide versus nitrates as first-line vasodilators on in-hospital outcomes in hospitalized patients with acute heart failure: insight from a nationwide claim-based database. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4362] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Nagai
- Hokkaido University Graduate School of Medicine, Cardiovascular Medicine, Sapporo, Japan
| | - N Iwakami
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Suita, Osaka, Japan
| | - M Nakai
- National Cerebral and Cardiovascular Center, Department of Statistics and Data Analysis, Suita, Japan
| | - K Nishimura
- National Cerebral and Cardiovascular Center, Department of Statistics and Data Analysis, Suita, Japan
| | - Y Sumita
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Suita, Osaka, Japan
| | - A Mizuno
- St. Luke's International Hospital, Cardiovascular Medicine, Tokyo, Japan
| | - H Tsutsui
- Kyushu University, Cardiovascular Medicine, Fukuoka, Japan
| | - H Ogawa
- National Cerebral and Cardiovascular Center Hospital, Department of Cardiovascular Medicine, Suita, Osaka, Japan
| | - T Anzai
- Hokkaido University Graduate School of Medicine, Cardiovascular Medicine, Sapporo, Japan
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Kawakami H, Inoue K, Fujii A, Nagai T, Higashi H, Uetani T, Aono J, Nishimura K, Suzuki J, Higaki J, Ikeda S. P5355Evaluation of functional recovery of structural reverse remodeling of the left atrium by pulmonary vein isolation in patients with atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5355] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Kawakami
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - K Inoue
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - A Fujii
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - T Nagai
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - H Higashi
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - T Uetani
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - J Aono
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - K Nishimura
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - J Suzuki
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - J Higaki
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
| | - S Ikeda
- Ehime University, Division of Cardiology, Department of Cardiology, Pulmonology, Hypertension and Nephrology, Toon, Japan
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40
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Okuno K, Naito Y, Asakura M, Sugahara M, Ando T, Nagai T, Saito Y, Yoshikawa T, Masuyama T, Anzai T. P3756Impact of anemia in patients with HFpEF with chronic kidney disease: results of Japanese heart failure syndrome with preserved ejection fraction (JASPER) registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3756] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K Okuno
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - Y Naito
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - M Asakura
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - M Sugahara
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Ando
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Nagai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
| | - Y Saito
- Nara Medical University, First Department of Internal Medicine, Nara, Japan
| | - T Yoshikawa
- Sakakibara Memorial Hospital, Department of Cardiology, Tokyo, Japan
| | - T Masuyama
- Hyogo College of Medicine, Cardiology, Nishinomiya, Japan
| | - T Anzai
- Hokkaido University, Department of Cardiovascular Medicine, Sapporo, Japan
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41
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Wulaer B, Nagai T, Sobue A, Itoh N, Kuroda K, Kaibuchi K, Nabeshima T, Yamada K. Repetitive and compulsive-like behaviors lead to cognitive dysfunction in Disc1Δ2-3/Δ2-3mice. Genes, Brain and Behavior 2018; 17:e12478. [DOI: 10.1111/gbb.12478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 01/19/2023]
Affiliation(s)
- B. Wulaer
- Department of Neuropsychopharmacology and Hospital Pharmacy; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - T. Nagai
- Department of Neuropsychopharmacology and Hospital Pharmacy; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - A. Sobue
- Department of Neuropsychopharmacology and Hospital Pharmacy; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - N. Itoh
- Department of Neuropsychopharmacology and Hospital Pharmacy; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - K. Kuroda
- Department of Cell Pharmacology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - K. Kaibuchi
- Department of Cell Pharmacology; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - T. Nabeshima
- Advanced Diagnostic System Research Laboratory; Fujita Health University, Graduate School of Health Sciences; Toyoake Japan
- Aino University; Ibaragi Japan
| | - K. Yamada
- Department of Neuropsychopharmacology and Hospital Pharmacy; Nagoya University Graduate School of Medicine; Nagoya Japan
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Shimizu M, Kuroda Y, Nakajima F, Nagai T, Satake M. A novel HLA-C allele, HLA-C*07:02:01:17N, with an alternative splice site. HLA 2018; 92:56-57. [PMID: 29653015 DOI: 10.1111/tan.13267] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/02/2018] [Accepted: 04/04/2018] [Indexed: 12/01/2022]
Abstract
We describe the identification of alternatively expressed HLA allele C*07:02:01:17N.
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Affiliation(s)
- M Shimizu
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - Y Kuroda
- Kyushu Block Blood Center, Japanese Red Cross, Fukuoka, Japan
| | - F Nakajima
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - T Nagai
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
| | - M Satake
- Central Blood Institute, Japanese Red Cross, Tokyo, Japan
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Owada A, Saito H, Nagai T, Iwamoto H, Shiigai T. Prophylactic use of intravenous prostaglandin E1 for radial arterial spasm in uremic patients undergoing construction of arteriovenous hemodialysis fistulas. Int J Artif Organs 2018. [DOI: 10.1177/039139889401701001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Radial arterial spasm in uremic patients undergoing construction of internal arteriovenous (AV) dialysis fistulas was investigated transcutaneously using ultrasonic Doppler flowmetry. In 6 of 16 control patients, the radial arterial blood flow was significantly decreased for 20 min after anastomosing, indicating vasospasm. Vasospasm did not occur in 15 patients who were continuously administered prostaglandin E1 (PGE1) intravenously (10 ng/kg/min) during surgery. The arterial blood flow was significantly increased in patients receiving PGE1 in comparison with control patients not receiving PGE1 and in whom vasospasm did not occur. Regarding patency of hemodialysis access, the fistula was obstructed in one control patient with radial arterial spasm, but not in patients with PGE1 infusion. Our study suggests that PGE1 may be effective in preventing vasospasm in patients undergoing placement of internal AV dialysis fistulas.
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Affiliation(s)
- A. Owada
- Department of Internal Medicine, Toride Kyodo General Hospital, Toride
| | - H. Saito
- Department of Internal Medicine, Tokyo Metropolitan Komagom Hospital, Tokyo - Japan
| | - T. Nagai
- Department of Internal Medicine, Tokyo Metropolitan Komagom Hospital, Tokyo - Japan
| | - H. Iwamoto
- Department of Internal Medicine, Tokyo Metropolitan Komagom Hospital, Tokyo - Japan
| | - T. Shiigai
- Department of Internal Medicine, Tokyo Metropolitan Komagom Hospital, Tokyo - Japan
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Nagai T, Kimura G, Inoue T, Nakamura S, Inenaga T, Kawano Y, Matsuoka H, Omae T. Quantitative Estimation of Ideal Body Weight in Uremic Patients. Int J Artif Organs 2018. [DOI: 10.1177/039139889501800103] [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: 11/16/2022]
Affiliation(s)
- T. Nagai
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - G. Kimura
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - T. Inoue
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - S. Nakamura
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - T. Inenaga
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - Y. Kawano
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - H. Matsuoka
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
| | - T. Omae
- Department of Medicine, National Cardiovascular Center, Osaka - Japan
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45
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Matsumoto C, Shinohara N, Furuta RA, Tanishige N, Shimojima M, Matsubayashi K, Nagai T, Tsubaki K, Satake M. Investigation of antibody to severe fever with thrombocytopenia syndrome virus (SFTSV) in blood samples donated in a SFTS-endemic area in Japan. Vox Sang 2018; 113:297-299. [PMID: 29359332 DOI: 10.1111/vox.12629] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 10/20/2017] [Revised: 12/13/2017] [Accepted: 12/13/2017] [Indexed: 11/30/2022]
Abstract
The risk of transfusion-transmitted infection (TTI) for severe fever with thrombocytopenia syndrome virus (SFTSV) is a concern because person-to-person transmission resulting from contact with SFTSV-contaminated blood has been reported. To obtain information regarding the risk of TTI-SFTSV, antibody testing was performed for blood samples donated in an severe fever with thrombocytopenia syndrome-endemic area in Japan. No antibody-positive samples were detected among 3990 samples. This finding suggested that there were few cases of SFTSV infection among donors and that the risk of TTI-SFTSV was also estimated low in Japan.
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Affiliation(s)
- C Matsumoto
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - N Shinohara
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - R A Furuta
- Kinki Block Blood Center, Japanese Red Cross Society, Osaka, Japan
| | - N Tanishige
- Chu-Shikoku Block Blood Center, Japanese Red Cross Society, Hiroshima, Japan
| | - M Shimojima
- Special Pathogens Laboratory, Department of Virology I, National Institute of Infectious Disease, Tokyo, Japan
| | - K Matsubayashi
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - T Nagai
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - K Tsubaki
- Chu-Shikoku Block Blood Center, Japanese Red Cross Society, Hiroshima, Japan
| | - M Satake
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
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46
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Nagai T, Kai N, Tanoue Y, Suzuki N. Chemical properties of commercially available honey species and the functional properties of caramelization and Maillard reaction products derived from these honey species. J Food Sci Technol 2017; 55:586-597. [PMID: 29391623 DOI: 10.1007/s13197-017-2968-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/30/2017] [Accepted: 11/09/2017] [Indexed: 11/24/2022]
Abstract
The chemical parameters and the functionalities of six monofloral honeys of different botanical and geographical origins were investigated. Vitamins B1, B2, and C and the protein content of majority of honeys were distinguishable from general honey. Honeys not only were rich in a variety of functional components like flavonoids but also had strong anti-oxidant activities, scavenging activities against ROS, and anti-hypertensive and anti-allergic activities. Honeys were heated at 100 °C for 24 h and their browning intensity during heating process was observed to vary with botanical origin. The functional properties of caramelization and maillard reaction (MR) products derived from honeys during heating were evaluated. The browning of honeys progressed regardless of honey species. Anti-oxidant activities and scavenging activities against superoxide and DPPH radicals of products drastically increased, but ACE and hyaluronidase activities gradually decreased with passage of heating time. It concluded that the products, mainly melanoidins, produced simultaneously to browning process in caramelization and MR contributed to the expression of its useful function.
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Affiliation(s)
- T Nagai
- 1Graduate School of Agricultural Sciences, Yamagata University, Yamagata, 9978555 Japan.,2The United Graduate School of Agricultural Sciences, Iwate University, Iwate, 0208550 Japan.,3Graduate School, Prince of Songkla University, Songkhla, 90112 Thailand
| | - N Kai
- 4Graduate School of Engineering, Oita University, Oita, 8701192 Japan
| | - Y Tanoue
- 5National Fisheries University, Yamaguchi, 7596595 Japan
| | - N Suzuki
- Nagoya Research Institute, Aichi, 4701131 Japan
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Usami S, Kataoka Y, Nakano H, Nakashima T, Kawakami S, Fujino M, Nakao K, Nagai T, Nishihira K, Kanaya T, Tahara Y, Asaumi Y, Noguchi T, Goto Y, Yasuda S. P639Triglyceride associated with cholesterol crystallization of atheroma in patients with coronary artery disease who received a statin: optical coherence tomographic analysis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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48
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Okuno K, Naito Y, Asakura M, Sugahara M, Ando T, Nagai T, Saito Y, Yoshikawa T, Masuyama T, Anzai T. P5283Differential prognostic impact of anemia in male and female patients with heart failure with preserved ejection fraction: analysis of Japanese Heart Failure Syndrome with Preserved Ejection Fraction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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49
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Kono T, Uetani T, Inoue K, Higashi H, Aono J, Nagai T, Nishimura K, Suzuki J, Kido T, Mochizuki T, Okura T, Higaki J, Ikeda S. P538Diagnostic accuracy of myocardial CT perfusion imaging to detect myocardial ischemia: comparison with echocardiographic assessment of coronary flow reserve and invasive fractional flow reserve. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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50
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Koga M, Sugano Y, Ueda N, Nakashima Y, Shibata A, Nakayama T, Yokokawa T, Nagai T, Kanzaki H, Yasuda S, Anzai T. P6155Significance of non-thyroidal illness syndrome in patients with dilated cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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