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Sakaguchi Y, Izumi D, Wada R, Akagawa R, Suzuki N, Hakamata T, Ikami Y, Hasegaw Y, Otsuki S, Yagihara N, Iijima K, Inomata T. Predictors of long-term survival in Japanese patients with heart failure with reduced ejection fraction (HFrEF) treated with cardiac resynchronization therapy-defibrillators (CRT-D). Pacing Clin Electrophysiol 2023; 46:1484-1490. [PMID: 37864809 DOI: 10.1111/pace.14848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 09/24/2023] [Accepted: 10/07/2023] [Indexed: 10/23/2023]
Abstract
BACKGROUND Reports on the factors predicting long-term survival of CRT-D cases from Western countries are increasing, however, those from Asia including Japan are still sparse. We aimed to clarify the factors predicting long-term survival of Japanese CRT-D cases. METHODS We retrospectively analyzed consecutive 133 patients who underwent CRT-D implantation between 2006 and 2021. We compared clinical factors between patients who died within 5 years after implantation (short-survival group: n = 31) and who had survived for more than 5 years (long-survival group: n = 36) after implantation. RESULTS Major underlying heart diseases were dilated cardiomyopathy (45%) and ischemic heart disease (12%). There was no difference between the short-survival group and the long-survival group in incidence of CLBBB (32% vs. 30%), whereas CRBBB was more common in the short-survival group (26% vs. 0%, p = .004). Mechanical dyssynchrony at implantation was more frequent in the long-survival group (48% vs. 78%, p = .02). The incidence of response to CRT at 1 year after implantation was higher in long-survival group (19% vs. 50%, p = .02). Multiple logistic regression analysis identified NYHA class, mechanical dyssynchrony at implantation, and response at one year as predictors of long-term survival. CONCLUSIONS In Japanese CRT-D cases, lower NHYA class, preexisting mechanical dyssynchrony, and 1-year response to CRT predict long-term survival.
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Affiliation(s)
- Yuta Sakaguchi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Rhythm Wada
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Rie Akagawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Naomasa Suzuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takahiro Hakamata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuki Hasegaw
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sou Otsuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Hidaka R, Masuda Y, Ogawa K, Tanaka T, Kanazawa M, Suzuki K, Stading M, Iijima K, Matsuo K. Impact of the Comprehensive Awareness Modification of Mouth, Chewing and Meal (CAMCAM) Program on the Attitude and Behavior Towards Oral Health and Eating Habits as Well as the Condition of Oral Frailty: A Pilot Study. J Nutr Health Aging 2023; 27:340-347. [PMID: 37248757 DOI: 10.1007/s12603-023-1913-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 03/29/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVES Preserving sufficient oral function and maintaining aadequate nutrition are essential for preventing physical frailty and the following long-term care. We recently developed the 6-month Comprehensive Awareness Modification of Mouth, Chewing And Meal (CAMCAM) program, in which participants gather monthly to learn about oral health and nutrition while eating a textured lunch together. This study examined whether the CAMCAM program could improve attitude and behavior towards oral health, mastication, and diet as well as ameliorate oral frailty in community-dwelling older adults. DESIGN Single-arm pre-post comparison study. SETTING AND PARTICIPANTS A total of 271 community-dwelling adults (72.3 ± 5.7 years of age; 159 women [58.7%]) in 4 Japanese municipalities were recruited, of which 249 participants (92%) were assessed at the final evaluation. INTERVENTION Participants gathered once a month at community centers to learn about oral health and nutrition while eating a "munchy" textured lunch containing proper nutrition. MEASUREMENTS Oral frailty, frailty, and eating behavior were evaluated with the Oral Frailty Index-8 (OFI-8), Kihon checklist (KCL), and CAMCAM checklist, respectively. Participants were divided into Oral frailty (OF) and Robust groups according to OFI-8 scores. The differences in KCL and CAMCAM checklist results between the OF and Robust groups were statistically tested along with changes in scores after the program. RESULTS KCL and CAMCAM checklist scores were significantly lower in the OF group at the initial assessment. OFI-8 and KCL findings were significantly improved in the OF group after completing the program (all P <0.05). Regarding the CAMCAM checklist, awareness of chewing improved significantly in the Robust group (P=0.009), with a similar tendency in the OF group (P=0.080). CONCLUSION The findings of this pilot study suggest that the CAMCAM program may improve both oral and systemic frailty in addition to attitudes towards chewing, oral health, and meals, especially in individuals with oral frailty. The CAMCAM program merits expansion as a community-based frailty prevention program.
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Affiliation(s)
- R Hidaka
- Koichiro Matsuo, Department of Oral Health Sciences for Community Welfare, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo, Tokyo 113-8549, Japan, Phone: +81-3-5803-4545, E-mail:
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Di Palma A, Adamo P, Dohi T, Fujiwara K, Hagiwara H, Kitamura A, Sakoda A, Sato K, Iijima K. Testing mosses exposed in bags as biointerceptors of airborne radiocaesium after the Fukushima Dai-ichi Nuclear Power Station accident. Chemosphere 2022; 308:136179. [PMID: 36055590 DOI: 10.1016/j.chemosphere.2022.136179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Eight years after the Fukushima nuclear accident, mosses exposed in bags were used to investigate their ability to accumulate radiocaesium and therefore to act as biointerceptors of 134Cs and 137Cs in the evacuated area of the Fukushima territory. Bags were filled with 3 widely studied moss species (Sphagnum palustre, Hypnum cupressiforme, and Hypnum plumaeforme) and exposed for 3, 6 or 9 weeks at 5 former residential sites within the Fukushima area and, for comparison, at three background sites located 700 km away. The radiocaesium activity concentrations found in moss bags were evaluated as function of exposure time, site conditions and moss species. In the Fukushima area, the moss bags accumulated 137Cs at all exposure sites and in all exposure periods, with S. palustre having the highest 137Cs accumulation ability. The 137Cs activity concentrations (from 28 to 4700 Bq kg-1) measured in moss bags increased with the exposure time and were consistent with the decontamination status of each exposure site, highlighting the big potential of moss bags to discriminate among exposure sites. Time dependency of 137Cs activity concentrations measured in mosses allowed the calculation of location-specific and species-specific factors, which can be used to predict radiocaesium accumulation trends in future biomonitoring surveys performed in the same area with the same experimental design. Autoradiography and electron microscopy analyses of the moss surfaces revealed a prevalence of soil-derived particulate form of radiocaesium, suggesting the use of moss bags as warning sensors of resuspended particles potentially harmful for local residents.
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Affiliation(s)
- A Di Palma
- Department of Mathematics and Physics, University of Campania Luigi Vanvitelli, Caserta, Italy; Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan.
| | - P Adamo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - T Dohi
- Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan
| | - K Fujiwara
- Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan
| | - H Hagiwara
- Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan
| | - A Kitamura
- Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan
| | - A Sakoda
- Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency (JAEA), Japan
| | - K Sato
- Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency (JAEA), Japan
| | - K Iijima
- Fukushima Environmental Evaluation Research Division, Japan Atomic Energy Agency (JAEA), Japan
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Suzuki N, Otsuki S, Izumi D, Akagawa R, Sakaguchi Y, Hakamata T, Ikami Y, Hasegawa Y, Yagihara N, Iijima K, Chinushi M, Inomata T. Clinical impact of nocturnal ventricular tachyarrythmias in electrical storm. Pacing Clin Electrophysiol 2022; 45:1330-1337. [DOI: 10.1111/pace.14592] [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] [Received: 07/04/2022] [Revised: 08/28/2022] [Accepted: 09/09/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Naomasa Suzuki
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Sou Otsuki
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Daisuke Izumi
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Rie Akagawa
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Yuta Sakaguchi
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Takahiro Hakamata
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Yasuhiro Ikami
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Yuki Hasegawa
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Nobue Yagihara
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | - Kenichi Iijima
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
| | | | - Takayuki Inomata
- Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
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Hakamata T, Otsuki S, Izumi D, Sakaguchi Y, Suzuki N, Ikami Y, Hasegawa Y, Yagihara N, Iijima K, Chinushi M, Koichi F, Inomata T. Clinical impact of ECG change on oversensing of subcutaneous implantable cardioverter-defibrillators. Heart Rhythm 2022; 19:1704-1711. [PMID: 35688344 DOI: 10.1016/j.hrthm.2022.05.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 05/01/2022] [Accepted: 05/13/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Inappropriate shocks delivered from subcutaneous implantable cardioverter-defibrillators (S-ICD) are most frequently caused by cardiac oversensing. However, the predictors for oversensing of S-ICD remain unclear. OBJECTIVE We aimed to investigate the predictors for oversensing of S-ICD, especially clinical impact of ECG change. METHODS We retrospectively enrolled 99 consecutive patients who underwent S-ICD implantation between 2013 and 2021. Oversensing events were defined as inappropriate charge of the capacitors induced by cardiac or noncardiac signals other than tachycardia. RESULTS During a median 34 month (IQR 20-50 months) of the follow-up period, 11 of the 99 patients experienced 34 oversensing events and 4 patients received inappropriate shocks during their events. Six patients exhibited ECG changes (bundle branch block, 3; ventricular pacing, 1; inverted T wave, 1; poor R progression, 1) during follow-up period. Oversensing events were observed in four of the six patients with ECG changes (67%), and three patients underwent S-ICD removal because of inevitable shock. Contrastingly, among the remaining patients without ECG change, all 7 patients who experienced oversensing events could continue using S-ICD with reprogramming sensing vector and/or restriction of excessive exercise. Logistic regression analysis showed lower voltage of Sokolow-Lyon ECG (V1S+V5R) was the predictor of oversensing event among the patients without ECG change. When the cut off value was 2.1mV, the sensitivity, specificity, positive predictive value, and negative predictive value were 85.7%, 62.7%, 15.7%, and 98.1%, respectively. CONCLUSION Unavoidable oversensing resulting in S-ICD removal is caused by ECG changes. Oversensing in patients without ECG change can be managed.
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Affiliation(s)
- Takahiro Hakamata
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sou Otsuki
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
| | - Daisuke Izumi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuta Sakaguchi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Naomasa Suzuki
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuki Hasegawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaomi Chinushi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | - Takayuki Inomata
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Ikami Y, Izumi D, Hasegawa Y, Suzuki N, Sakaguchi Y, Hakamata T, Otsuki S, Yagihara N, Iijima K, Kashimura T, Chinushi M, Minamino T, Inomata T. The Risk of Ventricular Tachyarrhythmias in Patients with Antimitochondrial Antibodies-Related Noncardiac Diseases. Int Heart J 2022; 63:476-485. [PMID: 35650149 DOI: 10.1536/ihj.22-075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Antimitochondrial antibodies (AMA) are serum autoantibodies specific to primary biliary cholangitis and are linked to myopathy and myocardial damage; however, the presence of AMA as a risk factor for ventricular tachyarrhythmias (VTs) has remained unknown. This study aimed to elucidate whether the presence of AMA-related noncardiac diseases indicates VTs risk.This cohort study enrolled 1,613 patients (883 females) who underwent AMA testing to assess noncardiac diseases. The incidence of VTs and supraventricular tachyarrhythmias (SVTs) from a year before the AMA testing to the last visit of the follow-up were retrospectively investigated as primary and secondary objectives. Using propensity score matching, we extracted AMA-negative patients whose covariates were matched to those of 152 AMA-positive patients. In this propensity score-matched cohort, the incidence of VTs and SVTs in the AMA-positive patients were compared with that in AMA-negative patients.The AMA-positive patients had higher estimated cumulative incidence (log-rank, P = 0.013) and prevalence (5.9% versus 0.7%, P = 0.020) of VTs than the AMA-negative patients. The presence of AMA was an independent risk factor for VTs (hazard ratio, 4.02; 95% CI, 1.44-20.01; P = 0.005). Meanwhile, AMA were associated with atrial flutter and atrial tachycardia development. In AMA-positive patients, VTs were associated with male sex, underlying myopathy, high creatine kinase levels, presence of chronic heart failure or ischemic heart disease, left ventricular dysfunction, presence of SVTs, and the electrocardiographic parameters indicating atrial disorders.The presence of AMA-related noncardiac diseases is an independent risk factor for VTs.
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Affiliation(s)
- Yasuhiro Ikami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Daisuke Izumi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuki Hasegawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Naomasa Suzuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuta Sakaguchi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takahiro Hakamata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Sou Otsuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Nobue Yagihara
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kenichi Iijima
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takeshi Kashimura
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Masaomi Chinushi
- School of Health Science, Faculty of Medicine, Niigata University
| | - Tohru Minamino
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences.,Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Ikeda M, Yamaguchi S, Murakami M, Takaoka S, Sakaguchi Y, Yasui S, Iijima K, Nanya K, Onodera H, Amano T. OP0008 A NOVEL SITE-SPECIFIC PEGYLATED IL-2 WITH POTENT AND TREG-SELECTIVE ACTIVITY IN VIVO. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.369] [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: 11/04/2022]
Abstract
BackgroundDecreased regulatory T cells (Tregs) and Treg dysfunction are hallmarks of a various autoimmune and inflammatory diseases. While low-dose IL-2 therapy induces Treg expansion in vivo and has clinical benefits in some diseases (e.g., SLE and chronic graft-versus-host disease [GvHD]), there are many concerns about adverse events due to low Treg-selectivity. Furthermore, frequent dosing is needed due to the short half-life.ObjectivesWe discovered a novel site-specific PEGylated IL-2 variant, KKC80, with high Treg selectivity and a long half-life in vivo, which overcomes the issues of low-dose IL-2 therapy.MethodsBased on the co-crystal structure of wild-type IL-2 and its heterotrimeric receptor (PBD ID: 2ERJ), amino acid residues that were to be PEGylation sites were substituted with oAzZLys, an azide-containing lysine derivative. The PEG molecule was site-specifically attached to oAzZLys-incorporated IL-2 by copper-free click chemistry. The binding property to the IL-2 receptors were measured by surface plasmon resonance (SPR). In vitro, Treg selectivity was evaluated by the IL-2-dependent proliferation activity of Tregs and NK cells from human peripheral blood mononuclear cells (PBMCs). In vivo pharmacological activity after the single subcutaneous administration in cynomolgus monkeys was measured by changes in Treg count and Treg activation status in peripheral blood by flow cytometry. Pharmacokinetic parameters were calculated according to serum PEGylated IL-2 concentration. Efficacy in mouse xenogeneic GvHD model using human PBMC-transplanted NOG mice and in monkey DTH model were evaluated.ResultsA novel PEGylated IL-2, KKC80 (human IL-2 desA1/C125S /I129oAzZLys_W-shaped 80 kDa PEG) was discovered by optimizing the PEGylation site and PEG structure based on Treg selectivity and PK. SPR analysis showed that the binding affinity of KKC80 to CD25 was moderately decreased from wild-type IL-2, while binding affinity of KKC80 to IL-2Rβγ was remarkably decreased due to a significant change of the association rate constant. In vitro, wild-type IL-2 activated both Tregs and NK cells in the same concentration range, whereas KKC80 selectively activated Tregs. The Treg selectivity of KKC80 was comparable to another IL-2 mutein, Fc.IL-2 V91K. KKC80, but not Fc.IL-2 V91K, retained its biological activity, even in the presence of a large amount of recombinant soluble CD25, which mimicked the endogenous decoy receptor for IL-2. In monkeys, KKC80 selectively increased peripheral blood Tregs in a dose-dependent manner; the average maximum rate of increase of Treg count in animals treated with 0.01, 0.03, 0.1, 0.3 and 1 mg/kg was 1.5, 3.5, 28, 50 and 154-fold, respectively. In contrast to Tregs, the rates of increase of conventional CD4+ T, CD8+ T and NK cells were low. The Treg increase peaked on day 8 or 11 and lasted for over day 29. KKC80 showed a more sustained upregulation of functional Treg markers (e.g., Foxp3 and CD25) in comparison to Fc.IL-2 V91K. The half-life of KKC80 was calculated as 83.5 to 150 h. At high doses, inflammation-related adverse effects, including increased CRP (≥0.3 mg/kg) and deterioration of general conditions (1 mg/kg) were observed. In the mouse xenogenic GvHD model, KKC80 ameliorated GvHD symptoms and suppressed multiple tissue inflammation markers. Decreased soluble CD25 and IFN-γ were also confirmed, suggesting Treg-mediated anti-inflammatory effect by KKC80 administration were exerted in vivo. In the monkey DTH model, KKC80 suppressed skin inflammation and antibody production.ConclusionAmong next-generation IL-2 variants, KKC80 showed a best-in-class biological profile for Treg activation. A drastic and sustained increase of Tregs with high Treg-selectivity and anti-inflammatory effects were observed in vivo. These data suggest that in comparison to current IL-2 therapy, KKC80 provides superior therapeutic index and efficacy in patients with autoimmune and inflammatory diseases.Figure 1.Disclosure of InterestsMasahiro Ikeda Employee of: Kyowa Kirin Co., Ltd., Shinpei Yamaguchi Employee of: Kyowa Kirin Co., Ltd., Masumi Murakami Employee of: Kyowa Kirin Co., Ltd., Shigeki Takaoka Employee of: Kyowa Kirin Co., Ltd., Yasuko Sakaguchi Employee of: Kyowa Kirin Co., Ltd., Shunki Yasui Employee of: Kyowa Kirin Co., Ltd., Kousuke Iijima Employee of: Kyowa Kirin Co., Ltd., Kenichiro Nanya Employee of: Kyowa Kirin Co., Ltd., Hideyuki Onodera Employee of: Kyowa Kirin Co., Ltd., Toru Amano Employee of: Kyowa Kirin Co., Ltd.
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Son BK, Imoto T, Inoue T, Nishimura T, Tanaka T, Iijima K. Social Detachment Influenced Muscle Mass and Strength during the COVID-19 Pandemic in Japanese Community-Dwelling Older Women. J Frailty Aging 2022; 11:231-235. [PMID: 35441202 PMCID: PMC8795718 DOI: 10.14283/jfa.2022.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Social detachment due to coronavirus disease (COVID-19) has caused a decline in physical activity, leading to sarcopenia and frailty in older adults. This study aimed to compare muscle mass, strength, and function values in older women before and after the first wave of the COVID-19 pandemic (April-May 2020). Furthermore, changes in muscle measures across women who experienced different levels of impact on their social participation due to the COVID-19 pandemic were examined. Muscle mass (total, trunk, and appendicular muscle), grip strength, oral motor skills, social interactions (social network and participation), and social support were assessed in 46 Japanese community-dwelling older women (mean, 77.5 y; range 66-93 y) before and after the first wave of the COVID-19 pandemic. Trunk muscle mass significantly decreased after the first wave of the pandemic. When comparing changed values between the enhanced/maintained and reduced group during the pandemic, significant group difference was observed in trunk muscular mass, grip strength, and oral motor skills. Intriguingly, those who enhanced social participation had a positive change of grip strength values, showing that social participation might influence muscle function during the COVID-19 pandemic.
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Affiliation(s)
- B K Son
- Son BK, PhD., Institute of Gerontology, Department of Geriatric Medicine, Graduate School of Medicine, Institute for Future Initiatives, The University of Tokyo, Tokyo, Japan, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan. Phone: 81 3 5800 6534, Fax: 81 3 5800 8837, E-mail:
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Tsuji Y, Takayama T, Sawai K, Shindo S, Moku R, Iijima K, Honma R. 1407P Patterns of aggravation in gastric cancer patients with peritoneal metastases who underwent paclitaxel-based intraperitoneal therapy. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1516] [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] Open
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Otsuki S, Izumi D, Sakaguchi Y, Suzuki N, Hakamata T, Ikami Y, Hasegawa Y, Yagihara N, Iijima K, Chinushi M, Minamino T, Takayuki I. Efficacy of antitachycardia pacing alert by remote monitoring of implantable cardioverter-defibrillators for out-of-hospital electrical storm. Pacing Clin Electrophysiol 2021; 44:1675-1682. [PMID: 34346080 DOI: 10.1111/pace.14334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Remote monitoring (RM) has been shown to reduce all-cause mortality in patients with implantable cardioverter-defibrillators or cardiac resynchronization therapy defibrillators (ICD/CRT-D). Not all devices transmit an alert for antitachycardia pacing (ATP) therapy, and it is unknown whether differences of RM alert affect the outcomes of electrical storm (ES). METHODS We enrolled 42 patients with ICD/CRT-D whose out-of-hospital ES were detected by RM between 2013 and 2020. We divided their 54 episodes into two groups (ATP-alert-on; 22, ATP-alert-off; 32), and clinical outcomes were compared between the two groups. RESULTS In 35 of 54 episodes of ES, ventricular tachycardia (VT) could be terminated within 24 h of ES onset just by ATP (ATP-alert-on: 14, ATP-alert-off: 21); however, many patients subsequently received shock delivery for VT. Among the 35 episodes, only in ATP-alert-on group, seven patients were prompted to visit our hospital without ICD shock through confirmation of ES by ATP-alert. Episodes that led to shock delivery 24 h or longer after the ES onset were significantly less common in the ATP-alert-on group (ATP-alert-on: 1/14, ATP-alert-off: 9/21, p = .03). Although there were no significant differences in the number of shock deliveries between episodes in the two groups, the number of ATP deliveries were significantly fewer in the ATP-alert-on group (12[7-26] vs. 29[16-53] in ATP-alert-off group, p = .03). Multivariate logistic regression analyses showed that the only ATP-alert significantly reduced ATP deliveries (HR = 0.14, 95%CI = 0.04-0.57, p = .003). CONCLUSION Remote monitoring with an ATP-alert function during electrical storm may reduce appropriate ICD therapy through prompting early review.
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Affiliation(s)
- Sou Otsuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuta Sakaguchi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Naomasa Suzuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takahiro Hakamata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuki Hasegawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaomi Chinushi
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Inomata Takayuki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Hasegawa Y, Watanabe H, Ikami Y, Otsuki S, Iijima K, Yagihara N, Izumi D, Minamino T. Response of the authors regarding article "J point elevation in high precordial leads associated with risk of ventricular fibrillation". Ann Noninvasive Electrocardiol 2021; 26:e12871. [PMID: 34288248 PMCID: PMC8293595 DOI: 10.1111/anec.12871] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/01/2021] [Accepted: 06/24/2021] [Indexed: 12/01/2022] Open
Affiliation(s)
- Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hiroshi Watanabe
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sou Otsuki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Makizako H, Nishita Y, Jeong S, Otsuka R, Shimada H, Iijima K, Obuchi S, Kim H, Kitamura A, Ohara Y, Awata S, Yoshimura N, Yamada M, Toba K, Suzuki T. TRENDS IN THE PREVALENCE OF FRAILTY IN JAPAN: A META-ANALYSIS FROM THE ILSA-J. J Frailty Aging 2021; 10:211-218. [PMID: 34105703 DOI: 10.14283/jfa.2020.68] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To examine whether age-specific prevalence of frailty in Japan changed between 2012 and 2017. DESIGN This study performed meta-analyses of data collected from 2012 to 2017 using the Integrated Longitudinal Studies on Aging in Japan (ILSA-J), a collection of representative Japanese cohort studies. SETTING The ILSA-J studies were conducted on community-living older adults. PARTICIPANTS ILSA-J studies were considered eligible for analysis if they assessed physical frailty status and presence of frailty in the sample. Seven studies were analyzed for 2012 (±1 year; n = 10312) and eight studies were analyzed for 2017 (±1 year; n = 7010). Five studies were analyzed for both 2012 and 2017. MEASUREMENTS The study assessed the prevalence of frailty and frailty status according to 5 criteria: slowness, weakness, low activity, exhaustion, and weight loss. RESULTS The overall prevalence of physical frailty was 7.0% in 2012 and 5.3% in 2017. The prevalence of frailty, especially in people 70 years and older, tended to decrease in 2017 compared to 2012. Slight decreases were found in the prevalence of frailty subitems including weight loss, slowness, exhaustion, and low activity between 2012 and 2017, but change in the prevalence of weakness was weaker than other components. CONCLUSIONS The prevalence of physical frailty decreased from 2012 to 2017. There are age- and gender-related variations in the decrease of each component of frailty.
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Affiliation(s)
- H Makizako
- Hyuma Makizako, Department of Physical Therapy, Faculty of Medicine, School of Health Sciences, Kagoshima University, Kagoshima, Japan,
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13
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Iijima K, Zhang H, Strachan MT, Huang J, Walcott GP, Rogers JM. Right ventricular insertion promotes reinitiation of ventricular fibrillation in defibrillation failure. Heart Rhythm 2021; 18:995-1003. [PMID: 33508518 PMCID: PMC8169561 DOI: 10.1016/j.hrthm.2021.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 01/04/2021] [Accepted: 01/18/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Shocks near defibrillation threshold (nDFT) strength commonly extinguish all ventricular fibrillation (VF) wavefronts, but a train of rapid, well-organized postshock activations (PAs) typically appears before sinus rhythm ensues. If one of the PA waves undergoes partial propagation block (wavebreak), reentry may be induced, causing VF to reinitiate and the shock to fail. OBJECTIVE The purpose of this study was to determine whether wavebreak leading to VF reinititation following nDFT shocks occurs preferentially at the right ventricular insertion (RVI), which previous studies have identified as a key site for wavebreak. METHODS We used panoramic optical mapping to image the ventricular epicardium of 6 isolated swine hearts during nDFT defibrillation episodes. After each experiment, the hearts were fixed and their geometry scanned with magnetic resonance imaging (MRI). The MRI and mapping datasets were spatially coregistered. For failed shocks, we identified the site of the first wavebreak of a PA wave during VF reinitiation. RESULTS We recorded 59 nDFT failures. In 31 of these, the first wavebreak event occurred within 1 cm of the RVI centerline, most commonly on the anterior side of the right ventricular insertion (aRVI) (23/31). The aRVI region occupies 16.8% ± 2.5% of the epicardial surface and would be expected to account for only 10 wavebreaks if they were uniformly distributed. By χ2 analysis, aRVI wavebreaks were significantly overrepresented. CONCLUSION The anterior RVI is a key site in promoting nDFT failure. Targeting this site to prevent wavebreak could convert defibrillation failure to success and improve defibrillation efficacy.
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Affiliation(s)
- Kenichi Iijima
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - Hanyu Zhang
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - Matthew T Strachan
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jian Huang
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Gregory P Walcott
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Jack M Rogers
- Department of Biomedical Engineering, University of Alabama at Birmingham, Birmingham, Alabama.
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Hasegawa Y, Izumi D, Ikami Y, Otsuki S, Yagihara N, Iijima K, Chinushi M, Minamino T. Progressive increase in activation delay during premature stimulation is related to ventricular fibrillation in Brugada syndrome. J Cardiovasc Electrophysiol 2021; 32:1939-1946. [PMID: 33928698 DOI: 10.1111/jce.15065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/01/2021] [Accepted: 04/14/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The local conduction delay has been deemed to play an important role in the perpetuation of ventricular fibrillation (VF) in Brugada syndrome (BrS). We evaluated the relationship between the activation delay during programmed stimulation and cardiac events in BrS patients. METHODS This study included 47 consecutive BrS patients who underwent an electrophysiological study and received implantable cardiac defibrillator therapy. We divided the patients into two groups based on whether they had developed VF (11 patients) or not (36 patients) during the follow-up period of 89 ± 53 months. The activation delay was assessed using the interval between the stimulus and the QRS onset during programmed stimulation. The mean increase in delay (MID) was used to characterize the conduction curves. RESULTS The MID at the right ventricular outflow tract (RVOT) was significantly greater in patients with VF (4.5 ± 1.2 ms) than in those without VF (2.2 ± 0.9 ms) (p < .001). A receiver operating characteristics curve analysis indicated that the optimal cut-off point for discriminating VF occurrence was 3.3 with 88.9% sensitivity and 91.3% specificity. Furthermore, patients with an MID at the RVOT ≥ 3.3 ms showed significantly higher rates of VF recurrence than those with an MID at the RVOT < 3.3 ms (p < .001). The clinical characteristics, including the signal-averaged electrocardiogram measurement and VF inducibility were similar between the two groups. CONCLUSION A prolonged MID at the RVOT was associated with VF and maybe an additional electrophysiological risk factor for VF in BrS patients.
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Affiliation(s)
- Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sou Otsuki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaomi Chinushi
- Cardiovascular Research of Graduate School of Health Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
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Kikuchi H, Fukuda S, Koike T, Shimodaira Y, Watanabe K, Saito M, Nakagawa K, Hatta W, Masamune A, Iijima K. Association of residual gastric acid secretion with persistent symptoms in gastroesophageal reflux disease patients receiving standard-dose proton pump inhibitor therapy. Esophagus 2021; 18:380-387. [PMID: 32737802 DOI: 10.1007/s10388-020-00765-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/24/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND Although a third of gastroesophageal reflux disease (GERD) patients are refractory to proton pump inhibitor (PPI) therapy, the underlying mechanism of the refractoriness remains unclear. We compared the level of gastric acid suppression during PPI treatment between responders and non-responders by directly measuring gastric acid secretion in GERD patients taking PPIs. METHODS Seventy-five consecutive patients receiving standard-dose PPI therapy for GERD were prospectively recruited, irrespective of persistent GERD symptoms. They were asked about their GERD symptoms using a validated questionnaire, and simultaneously underwent both a routine endoscopic examination and a gastric acid secretory testing using an endoscopic gastrin test. Associations between residual gastric acid secretion during PPI treatment and persistent GERD symptoms were analyzed by a logistic regression analysis. RESULTS Overall, 26 of 75 (34.7%) patients were judged to be positive for persistent GERD symptoms. The patients with and without persistent symptoms showed similar gastric acid secretion levels (1.3 [1.3] mEq/10 min vs. 1.4 [2.0] mEq/10 min). Sufficient gastric acid suppression, defined as < 0.6, was not significantly associated with persistent GERD symptoms (odds ratio 1.1, 95% confidence interval 0.40-3.5). CONCLUSIONS This study provided solid evidence to support that the gastric acid suppression level during PPI treatment does not differ between patients with and without persistent GERD symptoms. The insignificant role of residual gastric acid in the persistent GERD symptoms suggests that the use of medications other than those that enhance gastric acid inhibitory effects would be an essential approach for the management of PPI-refractory GERD.
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Affiliation(s)
- H Kikuchi
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - S Fukuda
- Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - T Koike
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - Y Shimodaira
- Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - K Watanabe
- Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan
| | - M Saito
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - K Nakagawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - W Hatta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - A Masamune
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Sendai, 980-8574, Japan
| | - K Iijima
- Department of Gastroenterology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.
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Abstract
Objective The incidence of chronic heart failure (CHF) is likely to keep increasing in Japan as the population ages, placing increased burdens on medical facilities, particularly on the limited numbers of rural hospitals. We explored the appropriateness of CHF treatment in rural areas in Japan. Methods We compared rates of adherence to therapeutic guidelines for CHF between residents with a left ventricular ejection fraction <35% living in urban areas (n = 207) and those in rural areas (n = 180). Treatments included pharmacological [beta-blockers, angiotensin-converting enzyme inhibitors (ACEi)/angiotensin II receptor blocker (ARB), mineralocorticoid receptor antagonist (MRA) and anticoagulants for atrial fibrillation] and non-pharmacological [implantable cardioverter defibrillator (ICD)/cardiac resynchronization therapy (CRT), cardiac rehabilitation and HF education] approaches. Patients This study included 387 patients with CHF, prior myocardial infarction or cardiomyopathy, and a left ventricular ejection fraction (LVEF) <35% as determined by echocardiography. Results The respective rates of treatments administered in urban and rural areas were as follows: beta-blockers, 91.3% vs. 61.7% (p<0.05); ACEi/ARB, 86.5% vs. 68.3% (p<0.05); MRA, 74.4% vs. 59.4% (p<0.01); anticoagulants, 100% vs. 86.5%, (p<0.05); ICD/CRT, 45.4% vs. 5.0% (p<0.05); cardiac rehabilitation, 32.4% vs. 13.3% (p<0.05) and HF education, 33.3% vs. 32.8% (p=0.75). Conclusion Regional disparities in treatment for CHF persist, even in Japan. Improvements in the use of guideline-directed treatment in rural areas might improve the outcomes for CHF patients.
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Affiliation(s)
- Yuji Matsuo
- Department of Internal Medicine, Niigata Prefectural Tokamachi Hospital, Japan
| | - Fumitoshi Yoshimine
- Department of Internal Medicine, Niigata Prefectural Tokamachi Hospital, Japan
| | - Katsuya Fuse
- Department of Internal Medicine, Uonuma City Koide Hospital, Japan
| | - Kazuo Suzuki
- Department of Internal Medicine, Niigata Prefectural Matsudai Hospital, Japan
| | - Takuya Sakamoto
- Department of Internal Medicine, Tsunan Town Hospital, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
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Hasegawa Y, Watanabe H, Ikami Y, Otsuki S, Iijima K, Yagihara N, Izumi D, Minamino T. J point elevation in high precordial leads associated with risk of ventricular fibrillation. Ann Noninvasive Electrocardiol 2020; 26:e12820. [PMID: 33368861 PMCID: PMC8164155 DOI: 10.1111/anec.12820] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/13/2020] [Accepted: 11/23/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction The significance of high precordial electrocardiograms in idiopathic ventricular fibrillation (IVF) is unknown. Method This study included 50 consecutive patients (48 men; age, 42 ± 18 years) who had spontaneous ventricular fibrillation not linked to structural heart disease and received implantable cardiac defibrillator therapy. IVF was diagnosed in 35 patients and Brugada syndrome was diagnosed in other 15 patients. Electrocardiograms in high intercostal space were compared between 35 patients with IVF and 105 age‐ and sex‐matched healthy controls (patient: control ratio, 1:3). Results The frequency of J point elevation ≥ 0.1 mV in the 4th intercostal spaces was similar between patients with IVF (14%) and healthy controls (7%). However, the frequency of J point elevation ≥ 0.1 mV in the 3rd intercostal space was higher in patients with IVF (40%) than controls (11%) (p < .01). J point elevation was present only in the 3rd intercostal space but not in the 4th intercostal space in 30% of patients with IVF but only in 6% of controls (p < .01). During follow‐up, the recurrence of ventricular fibrillation was higher in patients with IVF who had J point elevation in the 3rd intercostal space (36%) and Brugada syndrome(40%) than those with IVF who did not have J point elevation in the 3rd intercostal space(11%) (p < .05 for both). Conclusion J point elevation in the 3rd intercostal space was associated with IVF and recurrences of ventricular fibrillation. Electrocardiogram recordings in the high intercostal space may be useful to identify risk of sudden death.
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Affiliation(s)
- Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Hiroshi Watanabe
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | | | - Sou Otsuki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicineof Medical and Dental Sciences, Tokyo
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18
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Fujiki S, Iijima K, Okabe M, Niwano S, Tsujita K, Naito S, Ando K, Kusano K, Kato R, Nitta J, Miura T, Mitsuhashi T, Kario K, Kondo Y, Ieda M, Hagiwara N, Murohara T, Takahashi K, Tomita H, Takeishi Y, Anzai T, Shimizu W, Watanabe M, Morino Y, Kato T, Tada H, Nakagawa Y, Yano M, Maemura K, Kimura T, Yoshida H, Ota K, Tanaka T, Kitamura N, Node K, Aizawa Y, Shimizu I, Izumi D, Ozaki K, Minamino T. Placebo-Controlled, Double-Blind Study of Empagliflozin (EMPA) and Implantable Cardioverter-Defibrillator (EMPA-ICD) in Patients with Type 2 Diabetes (T2DM): Rationale and Design. Diabetes Ther 2020; 11:2739-2755. [PMID: 32968947 PMCID: PMC7547938 DOI: 10.1007/s13300-020-00924-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/03/2020] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION Type 2 diabetes (T2DM) is associated with cardiovascular death, including sudden cardiac death due to arrhythmias. Patients with an implantable cardioverter-defibrillator (ICD) are also at high risk of developing a clinically significant ventricular arrhythmia. It has been reported that sodium-glucose cotransporter 2 (SGLT2) inhibitors can reduce cardiovascular deaths; however, the physiological mechanisms of this remain unclear. It is, however, well known that SGLT2 inhibitors increase blood ketone bodies, which have been suggested to have sympatho-suppressive effects. Empagliflozin (EMPA) is an SGLT2 inhibitor. The current clinical trial titled "Placebo-controlled, double-blind study of empagliflozin (EMPA) and implantable cardioverter-defibrillator (EMPA-ICD) in patients with type 2 diabetes (T2DM)" was designed to investigate the antiarrhythmic effects of EMPA. METHODS The EMPA-ICD study is a prospective, multicenter, placebo-controlled, double-blind, randomized, investigator-initiated clinical trial currently in progress. A total of 210 patients with T2DM (hemoglobin A1c 6.5-10.0%) will be randomized (1:1) to receive once-daily placebo or EMPA, 10 mg, for 24 weeks. The primary endpoint is the number of clinically significant ventricular arrhythmias for 24 weeks before and 24 weeks after study drug administration, as documented by the ICD. The secondary endpoints of the study are the change from baseline concentrations in blood ketone and catecholamine 24 weeks after drug treatment. CONCLUSION The EMPA-ICD study is the first clinical trial to assess the effect of an SGLT2 inhibitor on clinically significant ventricular arrhythmias in patients with T2DM and an ICD. TRIAL REGISTRATION Unique trial number, jRCTs031180120 ( https://jrct.niph.go.jp/latest-detail/jRCTs031180120 ).
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Affiliation(s)
- Shinya Fujiki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaaki Okabe
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Niigata, Japan
| | - Shinichi Niwano
- Cardiovascular Medicine, Kitasato University, Sagamihara, Kanagawa, Japan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shigeto Naito
- Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Gunma, Japan
| | - Kenji Ando
- Department of Cardiology, Kokura Memorial Hospital, Kitakyushu, Fukuoka, Japan
| | - Kengo Kusano
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Ritsushi Kato
- Department of Cardiology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
- Department of Arrhythmia, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Junichi Nitta
- Department of Cardiology, Sakakibara Heart Institute, Fuchu, Tokyo, Japan
| | - Tetsuji Miura
- Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, Japan
| | - Takeshi Mitsuhashi
- Department of Cardiology, Jichi Medical University Saitama Medical Center, Saitama, Japan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan
| | - Yusuke Kondo
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masaki Ieda
- Department of Cardiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Nobuhisa Hagiwara
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | | | - Hirofumi Tomita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - Yasuchika Takeishi
- Department of Cardiovascular Medicine, Fukushima Medical University, Fukushima, Japan
| | - Toshihisa Anzai
- Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Wataru Shimizu
- Department of Cardiovascular Medicine, Nippon Medical School, Tokyo, Japan
| | - Masafumi Watanabe
- Department of Cardiology, Pulmonology, and Nephrology, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Yoshihiro Morino
- Division of Cardiology, Department of Internal Medicine, Iwate Medical University, Morioka, Iwate, Japan
| | - Takeshi Kato
- Department of Cardiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Hiroshi Tada
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yoshihisa Nakagawa
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Koji Maemura
- Department of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hisako Yoshida
- Department of Medial Statistics, Osaka City University, Graduate School of Medicine, Osaka, Japan
| | - Keiko Ota
- Data Management Group, Department of Clinical Research Support, Center for Clinical Research and Innovation, Osaka City University Hospital, Osaka, Japan
| | - Takahiro Tanaka
- Clinical and Translational Research Center, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Nobutaka Kitamura
- Clinical and Translational Research Center, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University, Saga, Japan
| | - Yoshifusa Aizawa
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Divisiont of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan.
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan.
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Fujisaki-Sueda-Sakai M, Takahashi K, Yoshizawa Y, Iijima K. Frailty Checkup Supporters' Intentions to Participate in Human-Resource Development and Training Activities. J Frailty Aging 2020; 9:238-243. [PMID: 32996561 DOI: 10.14283/jfa.2020.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Frailty prevention is one of social prescriptions for an aging society. That requires community level intervention. OBJECTIVES This study examined frailty checkup supporters' (FCSs') intentions to engage in human-resource development and training activities (i.e., leadership activities) and related factors. DESIGN Cross-sectional study. SETTING Three municipalities in suburban area, Eastern Japan. PARTICIPANTS Forty-five of 59 FCSs completed anonymous self-administered questionnaires. MEASUREMENTS Questionnaire sought information regarding their sociodemographic data, their perceptions and experiences of FCS activities, and their intentions to participate in human-resource development and training activities. Participants were divided into a high intention (HI) and low intention group (LI). The two groups were compared using quantitative and qualitative data. RESULTS Eleven FCSs reported intending to engage in leader-related activities. Factors associated with FCSs' intentions were finding FCS activities rewarding and the willingness to continue performing FCS activities. The participants who changed their daily activities (p = .041) and perceptions regarding contributing to the community (p = .018) showed significantly higher intention than LI participants. Free description about the changes in perceptions and lifestyles as a consequence of participating in FCS activities were analyzed qualitatively. FCSs who changed their daily activities and perspectives about contributing to the community described positive changes in both the groups. Meanwhile, FCSs who did not change their daily activities and perspectives about contributing to the community described their reason only in the LI group. CONCLUSIONS The results might encourage FCSs to participate in training and guidance activities, as they have positive experiences and receive recognition obtained through participation in such activities.
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Affiliation(s)
- M Fujisaki-Sueda-Sakai
- Mahiro Fujisaki-Sueda-Sakai, Institute of Gerontology, The University of Tokyo, Project Assistant Professor, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, , Phone/Fax: +81-3-5841-1662
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Taniguchi-Ikeda M, Yamamoto T, Awano H, Iijima K, Toda T. REGISTRIES, CARE, QUALITY OF LIFE, MANAGEMENT OF NMD. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.339] [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: 10/23/2022]
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Otsuki S, Izumi D, Hasegawa Y, Yagihara N, Iijima K, Minamino T. Suppression of cardiac memory–related severe form of torsades de pointes by landiolol in a patient with congenital long QT syndrome type 2. HeartRhythm Case Rep 2020; 6:407-410. [PMID: 32695588 PMCID: PMC7360983 DOI: 10.1016/j.hrcr.2020.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Furukawa K, Suzuki T, Ishiguro H, Morikawa H, Sonoda K, Iijima K, Ito M, Hanyu O, Sone H. Prevention of postprandial hypotension-related syncope by caffeine in a patient with long-standing diabetes mellitus. Endocr J 2020; 67:585-592. [PMID: 32115439 DOI: 10.1507/endocrj.ej19-0370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A 74-year-old man who had type 2 diabetes mellitus of a duration of 20 years was admitted for syncope after eating a high carbohydrate meal. Although he had had episodes of pallor or syncope after carbohydrate-rich meals, such as with large amounts of white rice, several times within a year and he had been taken to hospitals emergently, the etiology of these episodes had remained unclear despite his undergoing several studies. Studies did show severe orthostatic hypotension during the head-up tilt test and a decrease in the coefficient of variation of the R-R interval (CVR-R) on resting electrocardiogram, suggesting severe autonomic nervous dysfunction. Because of the episodes of syncope after eating a carbohydrate-rich meal, we investigated whether he had postprandial hypotension (PPH). The 75 g oral glucose tolerance test revealed a significant decrease in his postprandial blood pressure by about 40 mmHg, leading to the diagnosis of PPH. The carbohydrate-rich meal test induced syncope with systolic blood pressure under 40 mmHg. Then 150 mg caffeine was administered before a second carbohydrate-rich meal. The marked decline in postprandial blood pressure was suppressed and plasma noradrenaline levels were gradually increased over a period of 60 minutes. Caffeine could be useful for prevention of postprandial hypotension-related syncope.
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Affiliation(s)
- Kazuo Furukawa
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan
- Department of Endocrinology and Metabolism, Nagaoka Red Cross Hospital, Niigata, Japan
| | - Tatsuro Suzuki
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan
| | - Hajime Ishiguro
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan
| | - Hiroshi Morikawa
- Department of Internal Medicine, Morikawa Clinic, Niigata, Japan
| | - Keiko Sonoda
- Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masahiro Ito
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Osamu Hanyu
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan
| | - Hirohito Sone
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine, Niigata, Japan
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Suthuvoravut U, Takahashi K, Murayama H, Tanaka T, Akishita M, Iijima K. Association between Traditional Japanese Diet Washoku and Sarcopenia in Community-Dwelling Older Adults: Findings from the Kashiwa Study. J Nutr Health Aging 2020; 24:282-289. [PMID: 32115609 DOI: 10.1007/s12603-020-1318-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVES To identify the dietary patterns among community-dwelling Japanese older adults and to explore the association between these patterns and sarcopenia. DESIGN Cross-sectional study. SETTING Kashiwa city, Chiba prefecture, Japan. PARTICIPANTS Community-dwelling older adults (n = 1241) aged 65 years and over who were not eligible for long-term care. MEASUREMENTS Dietary intake was assessed using the brief self-administered diet history questionnaire (BDHQ). Dietary patterns were identified using both principal component analysis and the score on the Japanese diet comprising soybeans and soybean products, fish, vegetables, pickles, mushroom, seaweeds, and fruits. Sarcopenia was defined by the Asian Working Group for Sarcopenia (AWGS) criteria. A binary logistic regression analysis was performed with sarcopenia status as the dependent variable after adjusting for economic status, living alone status, BMI, energy intake, multimorbidity, and physical activity. RESULTS Participants' mean age was 74.6 years, and 52.1% were male. According to AWGS criteria, 5.1% had sarcopenia. Three dietary patterns were identified from the principal component analysis. Dietary pattern 1 (DP1), showed high loadings for fish, tofu, vegetables, and fruits which are similar to the side dishes in a typical Japanese diet. Dietary pattern 2 (DP2) had high factor loadings for fish, rice, and miso soup which are main dishes in a typical Japanese diet. Dietary pattern 3 (DP3) had a high factor loading for noodles. Men with the lowest tertile of DP1 score had a higher likelihood of being sarcopenic (Adjusted odds ratio (AOR) 3.67, 95% confidence interval (CI) 1.20-11.2). Women with the lowest tertile of DP2 score had a moderate likelihood of being sarcopenic (AOR 2.71, 95%CI 0.99-7.46). Low adherence to Japanese dietary pattern was associated with prevalence of sarcopenia in both genders. CONCLUSION Adherence to a dietary pattern high in foods characteristic of a Japanese diet including fish, soybean products, vegetables, and fruits was associated with low prevalence of sarcopenia in both genders.
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Affiliation(s)
- U Suthuvoravut
- Katsuya Iijima, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan, Tel: +81-3-5841-1662, Fax: +81-3-5841-1662, E-mail:
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Okuma K, Igaki H, Okamoto H, Nishioka S, Iijima K, Kashihara T, Takahashi K, Murakami N, Nakayama Y, Itami J. SP-008: Clinical experiences and Dosimetry of MR guided X-ray Therapy (MRXT). Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(20)30560-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Suthutvoravut U, Tanaka T, Takahashi K, Akishita M, Iijima K. Living with Family yet Eating Alone is Associated with Frailty in Community-Dwelling Older Adults: The Kashiwa Study. J Frailty Aging 2019; 8:198-204. [PMID: 31637406 DOI: 10.14283/jfa.2019.22] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES Eating alone is related to depression, nutritional risk, and mortality. These effects are also influenced by living status. However, little is known about the relationship between eating alone despite living with family and frailty. This study explores the relationship of eating alone and living status with frailty in community-dwelling older adults. DESIGN Cross-sectional study. SETTING AND PARTICIPANTS Kashiwa city, Chiba prefecture, Japan; randomly selected community-dwelling older adults (aged 65 years and over). MEASUREMENTS Eating status was assessed by the question, "Do you eat meals with anyone, at least once a day: yes or no?" Frailty was defined by Kihon Checklist (KCL) score 8 or over. Domains of frailty were divided into instrumental activities of daily living (IADL), physical strength, nutrition, eating, socialization, memory, and mood, based on KCL categories. Binary logistic regression analysis was used, adjusting for age, years of education, chronic diseases, number of teeth and cognitive function. RESULTS Among the total of 1,914 participants, 49.8% were male, and the overall mean age was 72.9 ± 5.5 years. Of all participants, 56 (5.9%) of men and 112 (11.7%) of women were frail. Older adults who ate alone despite living with others were more likely to be frail (OR 2.49, 95%CI 1.1-5.5 for men and OR 2.16, 95%CI 1.0-4.5 for women). Of particular note, eating and living status were associated with lower physical strength and mood in men, whereas in women these statuses were associated with lower scores for IADL, socialization, memory, and mood. CONCLUSIONS Eating alone despite living with others was associated with high frailty in both genders; however, the pathways were different between genders. These results might help yield a simple, fundamental intervention approach to multifaceted frailty, reflecting gender and associated high-risk domains.
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Affiliation(s)
- U Suthutvoravut
- Katsuya Iijima, 8th Building 613, Department of Engineering, Hongo 7-3-1, Bunkyo-ku, Tokyo, Tel: 03-5841-1662, Fax: 03-5841-1662, E-mail:
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Yamamoto T, Awano H, Fukuoka K, Nagai M, Imanishi T, Matsuo M, Iijima K, Saegusa J. P.263Juvenile Duchenne muscular dystrophy patients with abnormal Q wave are at risk for early onset of cardiac dysfunction. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nagai M, Awano H, Yamamoto T, Bo R, Nishio H, Matsuo M, Iijima K. O.26The α-actinin-3 deficiency is related to early onset of dilated cardiomyopathy in Duchenne muscular dystrophy patients. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Awano H, Nagai M, Shirakawa T, Osawa K, Lee T, Takeshima Y, Nishio H, Matsuo M, Iijima K. SMA BIOMARKERS. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.383] [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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Sato A, Hasegawa Y, Haniu H, Shiraishi S, Yagihara N, Iijima K, Izumi D, Minamino T. Replacement of an Implantable Cardioverter-Defibrillator (ICD) with a New Standard Subcutaneous ICD System in a Patient with Jervell and Lange-Nielsen Syndrome. Int Heart J 2019; 60:1206-1210. [PMID: 31484877 DOI: 10.1536/ihj.19-076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A 7-year-old female suffering from syncope attacks and deafness was genetically diagnosed with Jervell and Lange-Nielsen syndrome (JLNS). A transvenous-designed shock lead and implantable cardioverter-defibrillator (ICD) were atypically implanted subcutaneously, because the patient's body was small. Six years after implantation, we confirmed the patient's eligibility for a subcutaneous ICD (S-ICD) based on electrocardiogram screening. The implanted ICD system was replaced with a new standard S-ICD system. Implantation of the S-ICD may be considered a reliable and safe option in young patients with JLNS, even if their electrocardiograms show remarkable prolongation of the QT interval and T-wave alternans.
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Affiliation(s)
- Akinori Sato
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Hisanori Haniu
- Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences
| | - Shuichi Shiraishi
- Division of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Miura K, Harita Y, Tsurumi H, Takahashi K, Igarashi T, Iijima K, Hattori M. SUN-329 Clinical manifestations and genetic analysis of primary distal renal tubular acidosis. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Kimura Y, Shioya A, Saito Y, Oitani Y, Shigemoto Y, Morimoto E, Suzuki F, Ikegaya N, Kimura Y, Iijima K, Takayama Y, Iwasaki M, Sasaki M, Sato N. Radiologic and Pathologic Features of the Transmantle Sign in Focal Cortical Dysplasia: The T1 Signal Is Useful for Differentiating Subtypes. AJNR Am J Neuroradiol 2019; 40:1060-1066. [PMID: 31097427 DOI: 10.3174/ajnr.a6067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 03/27/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The transmantle sign is a characteristic MR imaging finding often seen in focal cortical dysplasia type IIb. The transmantle sign is typically hyperintense on T2WI and FLAIR and hypointense on T1WI. However, in some cases, it shows T1 high signal. We evaluated the imaging and pathologic findings to identify the causes of the T1 high signal in the transmantle sign. MATERIALS AND METHODS We retrospectively reviewed the preoperative imaging data of 141 consecutive patients with histologically proved focal cortical dysplasia. We selected 25 patients with focal cortical dysplasia with the transmantle sign and divided them into groups based on the pathologic focal cortical dysplasia subtype and T1 signal of the transmantle sign. We evaluated the clinical, radiologic, and pathologic findings, including the number of balloon cells and dysmorphic neurons and the severity of gliosis or calcifications and compared them among the groups. RESULTS Nine of the 25 patients had a T1-high-signal transmantle sign; the other 16 patients did not. All 9 patients with a T1-high-signal transmantle sign were diagnosed as type IIb (group A). Of the 16 patients with no T1-high-signal transmantle sign, 13 were diagnosed as having type IIb (group B), and the other 3 patients, as type IIa (group C). The number of balloon cells was significantly higher in group A than in the other groups, but there were no differences regarding dysmorphic neurons, the severity of gliosis, or calcifications. CONCLUSIONS Approximately 6% (9/141) of this patient series had a T1-high-signal transmantle sign, and all were type IIb. The signal may reflect a rich density of balloon cells. This finding could support the differentiation of subtypes, especially type IIb.
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Affiliation(s)
- Yukio Kimura
- From the Department of Radiology (Yukio K., Y. Shigemoto, E.M., F.S., N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - A Shioya
- Departments of Pathology and Laboratory Medicine (A.S., Y. Saito)
- Department of Neurology (A.S.), Mito Kyodo General Hospital, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Y Saito
- Departments of Pathology and Laboratory Medicine (A.S., Y. Saito)
| | - Y Oitani
- Child Neurology (Y.O., M.S.)
- Department of Pediatrics (Y.O.), Tokyo Women's Medical University Medical Center East, Tokyo, Japan
| | - Y Shigemoto
- From the Department of Radiology (Yukio K., Y. Shigemoto, E.M., F.S., N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - E Morimoto
- From the Department of Radiology (Yukio K., Y. Shigemoto, E.M., F.S., N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - F Suzuki
- From the Department of Radiology (Yukio K., Y. Shigemoto, E.M., F.S., N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - N Ikegaya
- Neurosurgery (N.I., Yuiko K., K.I., Y.T., M.I.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
- Department of Neurosurgery (N.I.), Yokohama City University, Yokohama, Kangawa, Japan
| | - Yuiko Kimura
- Neurosurgery (N.I., Yuiko K., K.I., Y.T., M.I.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - K Iijima
- Neurosurgery (N.I., Yuiko K., K.I., Y.T., M.I.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Y Takayama
- Neurosurgery (N.I., Yuiko K., K.I., Y.T., M.I.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - M Iwasaki
- Neurosurgery (N.I., Yuiko K., K.I., Y.T., M.I.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | | | - N Sato
- From the Department of Radiology (Yukio K., Y. Shigemoto, E.M., F.S., N.S.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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Okuma K, Okamoto H, Iijima K, Nishioka F, Kashihara T, Shima S, Uematsu M, Igaki H, Nakayama Y, Itami J, Murakami N, Nakamura S. EP-1403 Retrospective evaluation of usefulness of MR-guided adaptive radiotherapy of gastric MALT lymphoma. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31823-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sato A, Yagihara N, Hasegawa Y, Otuki S, Iijima K, Izumi D, Minamino T. A Steam Pop Detected by Intracardiac Echocardiography During Catheter Ablation of the Left Ventricular Papillary Muscle. Int Heart J 2019; 60:199-203. [PMID: 30464133 DOI: 10.1536/ihj.18-136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A 60-year-old female with premature ventricular contractions (PVCs) originating from the bottom of the posteromedial papillary muscle of the left ventricle underwent radiofrequency catheter ablation (RFCA) using an irrigated-tip catheter. During ablation of the PVCs, a loud steam pop was observed. Intracardiac echocardiography (ICE) revealed a growing, hyperechogenic intramyocardial microbubble formation around the catheter tip. The formation disappeared slowly and completely, leaving an endocardial laceration without pericardial effusion. ICE imaging is valuable during a difficult RFCA procedure, because ICE reveals the exact anatomical position of the catheter and thus allows rapid evaluation of the occurrence of steam popping and any possible subsequent complication.
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Affiliation(s)
- Akinori Sato
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Sou Otuki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Hasegawa Y, Watanabe H, Ikami Y, Otsuki S, Iijima K, Yagihara N, Sato A, Izumi D, Minamino T. Early repolarization and risk of lone atrial fibrillation. J Cardiovasc Electrophysiol 2019; 30:565-568. [PMID: 30661277 DOI: 10.1111/jce.13848] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 01/10/2019] [Accepted: 01/13/2019] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Early repolarization syndrome is a recently proposed condition characterized by an early repolarization pattern in the electrocardiogram (ECG) and ventricular fibrillation in the absence of structural heart abnormalities. Although some studies have suggested that early repolarization is associated with frequency of atrial fibrillation, the association of early repolarization with atrial fibrillation is not well known. HYPOTHESIS Early repolarization indicates the substrate for atrial fibrillation in addition to that for ventricular fibrillation. METHOD This study included 79 patients (57 men [72%]; age, 45 ± 12 years) aged less than 60 years who had paroxysmal lone atrial fibrillation and 395 age- and sex-matched healthy controls (patient:control ratio, 1:5). Patients who had structural heart disease, hypertension, diabetes, hyperthyroidism, history of successful resuscitation, or the Brugada type ECG were excluded. ECGs recorded during sinus rhythm were compared between patients with atrial fibrillation and healthy controls. RESULTS Early repolarization in the inferior and/or lateral leads was more common in patients with atrial fibrillation (25%) than controls (10%; P = 0.001). The location and magnitude of early repolarization were similar between the two groups. Other electrocardiographic measurements were not different between the two groups. Among patients with atrial fibrillation, there was no difference in clinical characteristics including age at atrial fibrillation development, sex, and body mass index between patients with early repolarization and those without early repolarization. Electrocardiographic measurements were not different between patients with early repolarization and those without early repolarization. CONCLUSION Early repolarization was associated with lone atrial fibrillation. Early repolarization may indicate increased susceptibility to atrial fibrillation.
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Affiliation(s)
- Yuki Hasegawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hiroshi Watanabe
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yasuhiro Ikami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Sou Otsuki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Nobue Yagihara
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Akinori Sato
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Jinnouchi H, Tamiya N, Ueshima H, Kawada T, Ishizaki T, Yoshie S, Iijima K. DOES CARE BURDEN OF DEMENTIA VARY BY LOCOMOTIVE FUNCTION AMONG JAPANESE ELDERLY PEOPLE? Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Jinnouchi
- . Department of Hygiene & Public Health, Nippon Medical School
| | - N Tamiya
- Department of Health Services Research, Faculty of Medicine, University of Tsukuba
| | - H Ueshima
- Doctoral Program in Human Care Science, Graduate School of Comprehensive Human Care Sciences, University of Tsukuba
| | - T Kawada
- . Department of Hygiene & Public Health, Nippon Medical School
| | - T Ishizaki
- Tokyo Metropolitan Institute of Gerontology
| | - S Yoshie
- Center for Home Care Medicine, Faculty of Medicine, The University of Tokyo
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36
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Nishimoto M, Tanaka T, Hirano H, Kikutani T, Watanabe Y, Ohara Y, Huruya H, Iijima K. HEALTH LITERACY AND ORAL HEALTH BEHAVIORS DECREASE THE RISK OF ORAL FRAILTY IN JAPANESE ELDERLY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Nishimoto
- Institute of Gerontology, The University of Tokyo, Japan
| | - T Tanaka
- Department of Geriatric Medicine, The University of Tokyo, Tokyo, Japan
| | - H Hirano
- Tokyo Metropolitan Institute of Gerontology, Japan
| | - T Kikutani
- Division of Clinical Oral Rehabilitation, Nippon Dental University Graduate School of Life Dentistry at Tokyo, Japan
| | - Y Watanabe
- Tokyo Metropolitan Institute of Gerontology, Japan
| | - Y Ohara
- Department of Oral Health Care Education, Tokyo Medical and Dental University, Tokyo, Japan
| | - H Huruya
- Division of Clinical Oral Rehabilitation, Nippon Dental University Graduate School of Life Dentistry at Tokyo, Japan
| | - K Iijima
- Institute of Gerontology, The University of Tokyo, Japan
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37
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Takano T, Tanaka K, Ozaki K, Sato A, Iijima K, Yanagawa T, Izumi D, Ozawa T, Fuse K, Sato M, Tanabe N, Minamino T. Clinical Predictors of Recurrent Ventricular Arrhythmias in Secondary Prevention Implantable Cardioverter Defibrillator Recipients With Coronary Artery Disease - Lower Left Ventricular Ejection Fraction and Incomplete Revascularization. Circ J 2018; 82:3037-3043. [PMID: 30305485 DOI: 10.1253/circj.cj-18-0646] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The implantable cardioverter defibrillator (ICD) is a standard prevention therapy for patients at high risk for sudden cardiac death (SCD) due to life-threatening ventricular arrhythmia (VA), that is, ventricular fibrillation and ventricular tachycardia. However, clinical predictors of recurrent VA in secondary prevention ICD recipients with coronary artery disease (CAD) remain unknown. Methods and Results: We followed up 96 consecutive patients with CAD undergoing ICD implantation for secondary prevention of SCD. Long-term rates and clinical predictors of appropriate ICD therapy (ICD-Tx) for VA were analyzed. Appropriate ICD-Tx occurred in 41 (42.7%) patients during a median follow-up of 2.4 years (interquartile range, 0.9-6.1). These patients had significantly greater left ventricular end-diastolic diameter (62.3±1.3 vs. 54.6±1.1 mm, P<0.001), lower left ventricular ejection fraction (LVEF; 36.3±2.0% vs. 45.7±1.8%, P<0.001), and more incomplete revascularization (ICR; 70.7% vs. 45.5%, P=0.014) than those without appropriate ICD-Tx. Multivariable analysis showed that LVEF (hazards ratio [HR], 0.950; 95% CI: 0.925-0.975; P<0.001) and ICR (HR, 2.293; 95% CI: 1.133-4.637; P=0.021) were significant predictors of appropriate ICD-Tx for VA. CONCLUSIONS Lower LVEF and ICR were independent predictors of recurrent VA in secondary prevention ICD recipients with CAD.
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Affiliation(s)
- Toshiki Takano
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Komei Tanaka
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Akinori Sato
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kenichi Iijima
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takao Yanagawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takuya Ozawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Koichi Fuse
- Department of Cardiology, Tachikawa General Hospital
| | - Masahito Sato
- Department of Cardiology, Tachikawa General Hospital
| | - Naohito Tanabe
- Department of Health and Nutrition, Faculty of Human Life Studies, University of Niigata Prefecture
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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38
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Hasegawa Y, Otuki S, Watanabe H, Iijima K, Yagihara N, Sato A, Izumi D, Minamino T. P4846J point elevation in high precordial leads associated with risk of ventricular arrhythmias. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4846] [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)
- Y Hasegawa
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - S Otuki
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - H Watanabe
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - K Iijima
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - N Yagihara
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - A Sato
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - D Izumi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
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39
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Okamoto H, Nishioka S, Iijima K, Sakasai T, Miura Y, Wakita A, Nakamura S, Shibata Y, Abe Y, Igaki H, Itami J. EP-1766: Modelling of MR-guided radiotherapy system on Monte Carlo code GEANT4. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)32075-9] [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: 10/14/2022]
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Abstract
In a previous communication, we reported a leaflet fracture in a Jellyfish valve that was incorporated into a blood pump, after a 312-day animal implant duration. Subsequent finite element analysis revealed that the fracture location was consistent with an area of maximum strain concentration. Therefore, the aim of this study was to improve the durability in the light of these findings. Based on the engineering analysis results, a new valve seat having a concentric ring of 0.5mm width, located at a radius of 7.0 mm, was designed and fabricated. Accelerated fatigue tests, conducted under the conditions recommended by ISO 5840, demonstrated that the durability of this new prototype was extended by a factor of 10, as compared to the original valve. Moreover, further finite element analysis indicated that the maximum equivalent elastic strain of the proposed new valve was reduced by 52.3% as compared to the original valve. Accordingly, it has been confirmed that the modified Jellyfish valve is suitable for use in long-term artificial hearts.
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Affiliation(s)
- K. Iwasaki
- Department of Mechanical Engineering, Waseda University, Tokyo - Japan
| | - M. Umezu
- Department of Mechanical Engineering, Waseda University, Tokyo - Japan
| | - K. Imachi
- Department of Biomedical Engineering, Graduate School of Medicine, The University of Tokyo, Tokyo - Japan
| | - K. Iijima
- Department of Mechanical Engineering, Waseda University, Tokyo - Japan
| | - T. Fujimoto
- Department of Mechanical Engineering, Shibaura Institute of Technology, Tokyo - Japan
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41
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Otuki S, Izumi D, Suda M, Sato A, Hasegawa Y, Yagihara N, Iijima K, Chinushi M, Fuse I, Minamino T. Effects of Direct Oral Anticoagulants at the Peak Phase, Trough Phase, and After Vascular Injury. J Am Coll Cardiol 2018; 71:102-104. [DOI: 10.1016/j.jacc.2017.10.076] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 10/26/2017] [Accepted: 10/29/2017] [Indexed: 10/18/2022]
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42
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Taniguchi-Ikeda M, Morisada N, Inagaki H, Ouchi Y, Takami Y, Tachikawa M, Satake W, Kobayashi K, Tsuneishi S, Takada S, Yamaguchi H, Nagase H, Nozu K, Okamoto N, Nishio H, Toda T, Morioka I, Wada H, Kurahashi H, Iijima K. Two patients with PNKP mutations presenting with microcephaly, seizure, and oculomotor apraxia. Clin Genet 2017; 93:931-933. [PMID: 29243230 DOI: 10.1111/cge.13106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/22/2017] [Accepted: 07/24/2017] [Indexed: 11/28/2022]
Affiliation(s)
- M Taniguchi-Ikeda
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Genetic Counseling, Kobe University Hospital, Kobe, Japan
| | - N Morisada
- Department of Clinical Genetics, Hyogo Prefectural Kobe Children's Hospital Perinatal Center, Kobe, Japan
| | - H Inagaki
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Y Ouchi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - Y Takami
- Department of Pediatrics, Himeji Red Cross Hospital, Himeji, Japan
| | - M Tachikawa
- Division of Neurology/Molecular Brain Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - W Satake
- Division of Neurology/Molecular Brain Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Kobayashi
- Division of Neurology/Molecular Brain Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Tsuneishi
- Medical and Welfare Center Kizuna, Kasai, Japan
| | - S Takada
- Kobe University Graduate School of Health Sciences, Kobe, Japan
| | - H Yamaguchi
- Department of Neonatology, Hyogo Prefectural Kobe Children's Hospital Perinatal Center, Kobe, Japan
| | - H Nagase
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Nozu
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - N Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - H Nishio
- Department of Community Medicine and Social Healthcare Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Toda
- Division of Genetic Counseling, Kobe University Hospital, Kobe, Japan.,Division of Neurology/Molecular Brain Science, Kobe University Graduate School of Medicine, Kobe, Japan
| | - I Morioka
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Wada
- Medical and Welfare Center Sakura, Sanda, Japan
| | - H Kurahashi
- Division of Molecular Genetics, Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Japan
| | - K Iijima
- Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan
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43
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Iijima K, Ishida N, Izumi D, Minamino T. Inappropriate inhibition of biventricular pacing due to diaphragmatic myopotentials amplified by the selectable sensing filter. Europace 2017; 19:2014. [DOI: 10.1093/europace/euw372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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44
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Okamoto H, Sakasai T, Nishioka S, Miura Y, Iijima K, Wakita A, Nakamura S, Kato T, Abe Y, Itami J. Dosimetric Characteristics of Double-Focused MLCs in MRI-Guided Radiation Therapy. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Matsumoto M, Awano H, Nagai M, Shirakawa T, Iijima K, Matsuo M. Urinary excretion of 8-OHdG, a biomarker of oxidative DNA damage, increases with age in DMD patients. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Kamada S, Hanazono A, Sanpei Y, Fukunaga H, Inoue T, Suzuki S, Sugawara M, Iijima K. Anti-titin antibody, one of the antistriational autoantibodies was found in a case of seronegative myasthenia gravis associated with anti-PD-1 therapy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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47
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Uchida M, Anderson EL, Squillace DL, Patil N, Maniak PJ, Iijima K, Kita H, O'Grady SM. Oxidative stress serves as a key checkpoint for IL-33 release by airway epithelium. Allergy 2017; 72:1521-1531. [PMID: 28273344 DOI: 10.1111/all.13158] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/02/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Interleukin (IL)-33 is implicated in the pathophysiology of asthma and allergic diseases. However, our knowledge is limited regarding how IL-33 release is controlled. The transcription factor nuclear factor-erythroid-2-related factor 2 (Nrf2) plays a key role in antioxidant response regulation. OBJECTIVE The goal of this project was to investigate the role of cellular oxidative stress in controlling IL-33 release in airway epithelium. METHODS Complementary approaches were used that included human bronchial epithelial cells and mouse models of airway type-2 immunity that were exposed to fungus Alternaria extract. The clinically available Nrf2 activator 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid methyl ester (CDDO-Me) was used to evaluate the role of Nrf2-induced antioxidant molecules. RESULTS Human bronchial epithelial cells produced reactive oxygen species (ROS) when they were exposed to Alternaria extract. ROS scavengers, such as glutathione (GSH) and N-acetyl cysteine, prevented extracellular secretion of ATP and increases in intracellular calcium concentrations that precede IL-33 release. Administration of CDDO-Me to mice enhanced expression of a number of antioxidant molecules in the lungs and elevated lung levels of endogenous GSH. Importantly, CDDO-Me treatment reduced allergen-induced ATP secretion and IL-33 release by airway epithelial cells in vitro and protected mice from IL-33 release and asthma-like pathological changes in the lungs. CONCLUSIONS The balance between oxidative stress and antioxidant responses plays a key role in controlling IL-33 release in airway epithelium. The therapeutic potential of Nrf2 activators needs to be considered for asthma and allergic airway diseases.
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Affiliation(s)
- M. Uchida
- Division of Allergic Diseases; Department of Internal Medicine; Mayo Clinic; Rochester MN USA
- Division of Hematology; Respiratory Medicine and Oncology; Department of Internal Medicine; Faculty of Medicine; Saga University; Saga Japan
| | | | - D. L. Squillace
- Division of Allergic Diseases; Department of Internal Medicine; Mayo Clinic; Rochester MN USA
| | - N. Patil
- Departments of Integrated Biology and Physiology and Animal Science; University of Minnesota; St. Paul MN USA
| | - P. J. Maniak
- Departments of Integrated Biology and Physiology and Animal Science; University of Minnesota; St. Paul MN USA
| | - K. Iijima
- Division of Allergic Diseases; Department of Internal Medicine; Mayo Clinic; Rochester MN USA
| | - H. Kita
- Division of Allergic Diseases; Department of Internal Medicine; Mayo Clinic; Rochester MN USA
- Department of Immunology; Mayo Clinic; Rochester MN USA
| | - S. M. O'Grady
- Departments of Integrated Biology and Physiology and Animal Science; University of Minnesota; St. Paul MN USA
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48
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Yamanaka T, Hirota Y, Oda A, Furuta T, Yoshie S, Matsumoto Y, Iijima K, Akishita M. FACTORS RELATED TO QOL AND WELL-BEING OF THE ELDERLY WHO NEED HOME CARE AND THEIR CAREGIVERS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Yamanaka
- Center for Home Care Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan,
| | - Y. Hirota
- Center for Home Care Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan,
| | - A. Oda
- Home Clinic Kashiwa, Kashiwa, Japan,
| | | | - S. Yoshie
- Center for Home Care Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan,
| | - Y. Matsumoto
- Center for Home Care Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan,
| | - K. Iijima
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan,
| | - M. Akishita
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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49
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Suthutvoravut U, Tanaka T, Takahashi K, Yoshizawa Y, Fujisaki M, Akishita M, Iijima K. FREQUENCY OF FOOD GROUPS CONSUMPTION IS RELATED WITH FRAILTY IN ELDERLY: FROM KASHIWA STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- U. Suthutvoravut
- The University of Tokyo, Tokyo, Tokyo, Japan,
- Mahidol University, Bangkok, Thailand,
| | - T. Tanaka
- The University of Tokyo, Tokyo, Tokyo, Japan,
| | | | | | - M. Fujisaki
- The University of Tokyo, Tokyo, Tokyo, Japan,
| | - M. Akishita
- The University of Tokyo, Tokyo, Tokyo, Japan,
| | - K. Iijima
- The University of Tokyo, Tokyo, Tokyo, Japan,
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50
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Iijima K, Kuroda A, Tanaka T, Takahashi K, Akishita M, Tsuji T. IMPACT OF SOCIAL DISENGAGEMENT ON PHYSICAL PERFORMANCE IN JAPANESE COMMUNITY-DWELLING ELDERLY STUDY. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K. Iijima
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan,
| | - A. Kuroda
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan,
| | - T. Tanaka
- Geriatric Medicine, The University of Tokyo, Tokyo, Japan
| | - K. Takahashi
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan,
| | - M. Akishita
- Geriatric Medicine, The University of Tokyo, Tokyo, Japan
| | - T. Tsuji
- Institute of Gerontology, The University of Tokyo, Tokyo, Japan,
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