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Nawata T, Honda T, Sakai H, Tsuji S, Otsuka M, Uchinoumi H, Kobayashi S, Yamamoto T, Asagiri M, Yano M. Dantrolene, a ryanodine receptor stabilizer, is a candidate immunomodulator for treating rheumatic disease. Scand J Rheumatol 2024; 53:217-219. [PMID: 38293969 DOI: 10.1080/03009742.2023.2297519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 12/18/2023] [Indexed: 02/01/2024]
Affiliation(s)
- T Nawata
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - T Honda
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - H Sakai
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - S Tsuji
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - M Otsuka
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - H Uchinoumi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - S Kobayashi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - T Yamamoto
- Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - M Asagiri
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - M Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Ishikawa T, Kawamoto D, Nishimura T, Suetomi T, Kobayashi S, Takami T. Portopulmonary Hypertension Treated by Occlusion of a Spontaneous Portosystemic Shunt Followed by Endothelin Receptor Antagonist Administration. J Vasc Interv Radiol 2024; 35:313-315. [PMID: 37931842 DOI: 10.1016/j.jvir.2023.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/21/2023] [Accepted: 10/27/2023] [Indexed: 11/08/2023] Open
Affiliation(s)
- Tsuyoshi Ishikawa
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube-Yamaguchi 7558505, Japan.
| | - Daiki Kawamoto
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube-Yamaguchi 7558505, Japan
| | - Tatsuro Nishimura
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube-Yamaguchi 7558505, Japan
| | - Takeshi Suetomi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube-Yamaguchi, Japan
| | - Shigeki Kobayashi
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, Ube-Yamaguchi, Japan
| | - Taro Takami
- Department of Gastroenterology and Hepatology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube-Yamaguchi 7558505, Japan
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Kobayashi S. Evolution of a non-flying mammal-dependent pollination system in Asian Mucuna (Fabaceae). Plant Biol (Stuttg) 2023; 25:833-841. [PMID: 37408380 DOI: 10.1111/plb.13557] [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] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 06/01/2023] [Indexed: 07/07/2023]
Abstract
Pollinator shifts are often related to speciation in angiosperms, and the relationship between them has been discussed in several plant taxa. Although limited information on plants pollinated by non-flying mammals in Central and South America and Africa is available, related research has not been conducted in Asia. Herein, I summarize the available knowledge of pollination in Asian Mucuna (Fabaceae), a genus mainly distributed in the tropics, and discuss the evolution of plants pollinated by non-flying mammals in Asia. Nineteen pollinator species have been recorded and pollination systems have been categorized into four types. An examination of the relationship between Mucuna species and their pollinators from the lineage perspective revealed that all species in Mucuna, subgenus Macrocarpa, which are distributed in Asia, are pollinated exclusively by non-flying mammals. Additionally, plants pollinated by non-flying mammals were found to have diverged from bat-pollinated and non-flying mammal-pollinated plants, while plants pollinated by non-flying mammals have evolved multiple times. This is a unique example of evolutionary transition. I hypothesize that the diversification of squirrel species in tropical Asia may have led to the speciation and diversification of Mucuna in Asia. Furthermore, the behavioural and ecological characteristics of bats and birds in Asia differ from the characteristics of those in other regions, implying that Asian Mucuna species do not rely on bat or bird pollinators. The adaptation of floral characteristics to pollinators is not well understood in Asia. Mammal-pollinated plants in Asia may have evolved differently from those in other regions and have unique pollination systems.
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Affiliation(s)
- S Kobayashi
- Faculty of Science, University of the Ryukyus, Nishihara, Okinawa, Japan
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Kobayashi S, Yamamoto T, Yano M. RyR2-stabilization therapy with dantrolene against left ventricular remodeling and lethal arrhythmia in heart failure. J Mol Cell Cardiol 2023; 182:25-27. [PMID: 37419178 DOI: 10.1016/j.yjmcc.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Affiliation(s)
- Shigeki Kobayashi
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Takeshi Yamamoto
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Masafumi Yano
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
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Zhang P, Ohshima S, Zhao H, Kobayashi S, Kado S, Minami T, Kin F, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J. Rev Sci Instrum 2023; 94:093501. [PMID: 37671952 DOI: 10.1063/5.0162649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Abstract
A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Kin
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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Ishiguchi H, Yoshiga Y, Shimizu A, Fukuda M, Hisaoka M, Hashimoto S, Omuro T, Okamura T, Kobayashi S, Yano M. Association between the atrial tachyarrhythmia recurrence period and long-term major adverse clinical events following catheter ablation for atrial fibrillation. Int J Cardiol Heart Vasc 2023; 47:101228. [PMID: 37275627 PMCID: PMC10239027 DOI: 10.1016/j.ijcha.2023.101228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/29/2023] [Accepted: 05/19/2023] [Indexed: 06/07/2023]
Abstract
Background We previously demonstrated the clinical events in patients who underwent catheter ablation (CA) for atrial fibrillation (AF). Data on the association between the period of atrial tachyarrhythmia (ATA) recurrence after CA and long-term major adverse clinical events (MACE) remain unclear. In this study, we evaluated this issue in patients with systolic impairment (left ventricular ejection fraction < 50%) and heart failure with preserved ejection fraction (HFpEF). Methods We retrospectively collected data from 81 patients with systolic impairment and 83 patients with HFpEF who underwent CA for AF at our institution (median follow-up: 4.9 [3.6, 6.6] years). In each group, we compared the cumulative incidence of long-term MACE (since 1 year after CA) between patients with and without ATA recurrence at three follow-up periods (3, 6 months, and 1 year after index CA). We evaluated the period of recurrence, which was the most beneficial predictor of MACE among the periods. Results In the systolic impairment group, the cumulative long-term MACE incidence was significantly higher in patients with ATA recurrence than in those without it within 6 months and 1 year (P = 0.04 and P = 0.01, respectively). Recurrence within 1 year showed the highest feasibility for predicting long-term MACE (area under the curve with 95% confidence interval [CI]:0.73 [0.61-0.84]). However, there was no difference in the incidence of MACE between patients with and without recurrence in a group with HFpEF in each period. Conclusion ATA recurrence within 1 year could predict long-term MACE in patients with systolic impairment, but not in patients with HFpEF.
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Affiliation(s)
- Hironori Ishiguchi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yasuhiro Yoshiga
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Akihiko Shimizu
- Department of Cardiology, Ube-Kohsan Central Hospital, Ube, Japan
| | - Masakazu Fukuda
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masahiro Hisaoka
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shintaro Hashimoto
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takuya Omuro
- Faculty of Health Sciences, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shigeki Kobayashi
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, Ube, Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Honda T, Onishi H, Fukui H, Yano K, Kiso K, Nakamoto A, Tsuboyama T, Ota T, Tatsumi M, Tahara S, Kobayashi S, Eguchi H, Tomiyama N. Extracellular volume fraction using contrast-enhanced CT is useful in differentiating intrahepatic cholangiocellular carcinoma from hepatocellular carcinoma. Front Oncol 2023; 13:1214977. [PMID: 37483497 PMCID: PMC10359704 DOI: 10.3389/fonc.2023.1214977] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 06/19/2023] [Indexed: 07/25/2023] Open
Abstract
Objectives To evaluate whether tumor extracellular volume fraction (fECV) on contrast-enhanced computed tomography (CT) aids in the differentiation between intrahepatic cholangiocarcinoma (ICC) and hepatocellular carcinoma (HCC). Methods In this retrospective study, 113 patients with pathologically confirmed ICC (n = 39) or HCC (n = 74) who had undergone preoperative contrast-enhanced CT were enrolled. Enhancement values of the tumor (Etumor) and aorta (Eaorta) were obtained in the precontrast and equilibrium phase CT images. fECV was calculated using the following equation: fECV [%] = Etumor/Eaorta × (100 - hematocrit [%]). fECV values were compared between the ICC and HCC groups using Welch's t-test. The diagnostic performance of fECV for differentiating ICC and HCC was assessed using receiver-operating characteristic (ROC) analysis. fECV and the CT imaging features of tumors were evaluated by two radiologists. Multivariate logistic regression analysis was performed to identify factors predicting a diagnosis of ICC. Results Mean fECV was significantly higher in ICCs (43.8% ± 13.2%) than that in HCCs (31.6% ± 9.0%, p < 0.001). The area under the curve for differentiating ICC from HCC was 0.763 when the cutoff value of fECV was 41.5%. The multivariate analysis identified fECV (unit OR: 1.10; 95% CI: 1.01-1.21; p < 0.05), peripheral rim enhancement during the arterial phase (OR: 17.0; 95% CI: 1.29-225; p < 0.05), and absence of washout pattern (OR: 235; 95% CI: 14.03-3933; p < 0.001) as independent CT features for differentiating between the two tumor types. Conclusions A high value of fECV, peripheral rim enhancement during the arterial phase, and absence of washout pattern were independent factors in the differentiation of ICC from HCC.
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Affiliation(s)
- T. Honda
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - H. Onishi
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - H. Fukui
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K. Yano
- Department of Radiology, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - K. Kiso
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - A. Nakamoto
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T. Tsuboyama
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - T. Ota
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - M. Tatsumi
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - S. Tahara
- Department of Pathology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - S. Kobayashi
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - H. Eguchi
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - N. Tomiyama
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan
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Nawata J, Yamamoto T, Tanaka S, Yano Y, Uchida T, Fujii S, Nakamura Y, Suetomi T, Uchinoumi H, Oda T, Kobayashi S, Yano M. Dantrolene improves left ventricular diastolic property in mineralcorticoid-salt-induced hypertensive rats. Biochem Biophys Rep 2023; 34:101449. [PMID: 36926278 PMCID: PMC10011190 DOI: 10.1016/j.bbrep.2023.101449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/13/2023] [Accepted: 02/26/2023] [Indexed: 03/04/2023] Open
Abstract
Left ventricular (LV) diastolic dysfunction is increasingly common in heart failure with preserved ejection fraction (HFpEF), and new drug therapy is desired. We recently reported that dantrolene (DAN) attenuates pressure-overload induced hypertrophic signaling through stabilization of tetrameric structure of cardiac ryanodine receptor (RyR2). Because cardiac hypertrophy substantially affects LV diastolic properties, we investigated the effect of DAN on LV diastolic properties in mineralocorticoid-salt-induced hypertensive rat model exhibiting the HFpEF phenotype. Male Sprague-Dawley (SD) rats (8 weeks old) received an uninephrectomy (UNX), subcutaneous implantation of a 200 mg pellet of deoxycorticosterone acetate (DOCA), and 0.9% NaCl water (UNX + DOCA-salt). UNX, a control pellet, and water without NaCl served as controls (UNX control). The effect of oral administration of 100 mg/kg/d DAN was examined in UNX control and UNX + DOCA-salt groups (UNX + DAN and UNX + DOCA-salt + DAN). UNX + DOCA-salt treatment resulted in mild hypertension. Chronic administration of DAN to UNX + DOCA-salt rats (UNX + DOCA-salt + DAN) did not affect blood pressure. DAN treatment increased the mitral annular early relaxation velocity in the UNX + DOCA-salt group. The size of cardiomyocytes increased in the UNX + DOCA-salt group, whereas the increase was suppressed by DAN treatment. LV fibrotic area was significantly smaller in the UNX + DOCA-salt + DAN group than in the UNX + DOCA-salt group (2.0 ± 0.2% vs 4.0 ± 0.4%). The LV chamber stiffness significantly increased in the UNX + DOCA-salt group, whereas the increase was suppressed by DAN treatment. DAN treatment normalized the CaM-RyR2 interaction and inhibited aberrant Ca2+ release. DAN improved left ventricular diastolic properties with respect to both myocardial relaxation and chamber stiffness. DAN may be a new treatment option for HFpEF.
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Affiliation(s)
- Junya Nawata
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Yamamoto
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shinji Tanaka
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yasutake Yano
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tomoyuki Uchida
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shohei Fujii
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yoshihide Nakamura
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Suetomi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hitoshi Uchinoumi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tetsuro Oda
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
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Yasuda Y, Ishiguchi H, Yamaguchi M, Murakami K, Kinoshita N, Kato T, Yoshida M, Imoto K, Sonoyama K, Kawabata T, Okamura T, Endo A, Kobayashi S, Yano M, Oda T, Tanabe K. Incidence of Mid-Term Prognostic Events in Patients With Acute Coronary Syndrome During the Late 2010s in 2 Tertiary Hospitals in a Rural Area of Japan - A Temporal Comparison. Circ Rep 2023; 5:198-209. [PMID: 37180477 PMCID: PMC10166665 DOI: 10.1253/circrep.cr-23-0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 05/16/2023] Open
Abstract
Background: Data on the incidence of mid-term prognostic events in patients who developed acute coronary syndrome (ACS) in the late 2010s are scarce. Methods and Results: We retrospectively included and collected data for 889 patients with ACS (ST-elevation myocardial infarction [STEMI]/non-ST-elevation ACS [NSTE-ACS]) discharged alive from 2 tertiary hospitals in Izumo City, in rural Japan, between August 2009 and July 2018. Patients were divided into 3 time groups (T1: August 2009-July 2012; T2: August 2012-July 2015; T3: August 2015-July 2018). The cumulative incidence of major adverse cardiovascular events (MACE; comprising all-cause death, recurrent ACS, and stroke), major bleeding, and heart failure hospitalization within 2 years of discharge was compared among the 3 groups. The incidence of freedom from MACE was significantly higher in the T3 group than in the T1 and T2 groups (93 [95% confidence interval {CI} 90-96%] vs. 86% [95% CI 83-90] and 89% [95% CI 90-96], respectively; P=0.03). There was a tendency for a higher incidence of STEMI among patients in T3 (P=0.057). The incidence of NSTE-ACS was comparable among the 3 groups (P=0.31), as was the incidence of major bleeding and hospitalization for heart failure. Conclusions: The incidence of mid-term MACE in patients who developed ACS during the late 2010 s (2015-2018) was lower than that in prior periods (2009-2015).
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Affiliation(s)
- Yu Yasuda
- Division of Cardiology, Shimane University Faculty of Medicine Izumo Japan
| | - Hironori Ishiguchi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine Ube Japan
| | - Madoka Yamaguchi
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Kei Murakami
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Natsu Kinoshita
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Takayoshi Kato
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Masaaki Yoshida
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Koji Imoto
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Kazuhiko Sonoyama
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Tetsuya Kawabata
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine Ube Japan
| | - Akihiro Endo
- Division of Cardiology, Shimane University Faculty of Medicine Izumo Japan
| | - Shigeki Kobayashi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine Ube Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine Ube Japan
| | - Tsuyoshi Oda
- Division of Cardiology, Shimane Prefectural Central Hospital Izumo Japan
| | - Kazuaki Tanabe
- Division of Cardiology, Shimane University Faculty of Medicine Izumo Japan
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Fujioka R, Yamamoto T, Maruta A, Nakamura Y, Tominaga N, Inamitsu M, Oda T, Kobayashi S, Yano M. Herpud1 modulates hypertrophic signals independently of calmodulin nuclear translocation in rat myocardium-derived H9C2 cells. Biochem Biophys Res Commun 2023; 652:61-67. [PMID: 36812708 DOI: 10.1016/j.bbrc.2023.02.038] [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: 01/01/2023] [Revised: 01/09/2023] [Accepted: 02/15/2023] [Indexed: 02/18/2023]
Abstract
In this study, we aimed to analyze the role of the Homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 (Herpud1) gene in the development of cardiomyocyte hypertrophy in association with Calmodulin (CaM) nuclear translocation and cytosolic Ca2+ levels. To observe the mobilization of CaM in cardiomyocytes, we stably expressed eGFP-CaM in rat myocardium-derived H9C2 cells. These cells were then treated with Angiotensin II (Ang II), which stimulates a cardiac hypertrophic response, or dantrolene (DAN), which blocks the release of intracellular Ca2+. To observe intracellular Ca2+ in the presence of eGFP fluorescence, a Rohd-3 Ca2+ sensing dye was used. To examine the effect of suppressing Herpud1 expression, Herpud1 small interfering RNA (siRNA) were transfected into H9C2 cells. To examine whether hypertrophy induced by Ang II could be suppressed by Herpud1 overexpression, a Herpud1-expressing vector was introduced into H9C2 cells. CaM translocation was observed using eGFP fluorescence. Nuclear translocation of Nuclear factor of activated T-cells, cytoplasmic 4 (NFATc4) and nuclear export of Histone deacetylase 4 (HDAC4) were also examined. First, Ang II induced H9C2 hypertrophy with nuclear translocation of CaM and elevation of cytosolic Ca2+, which were inhibited by DAN treatment. We also found that Herpud1 overexpression suppressed Ang II-induced cellular hypertrophy without preventing nuclear translocation of CaM or elevation of cytosolic Ca2+. Additionally, Herpud1 knockdown induced hypertrophy without the nuclear translocation of CaM, which was not inhibited by DAN treatment. Finally, Herpud1 overexpression suppressed Ang II-induced NFATc4 nuclear translocation but did not suppress Ang II-induced CaM nuclear translocation or HDAC4 nuclear export. Ultimately, this study lays the groundwork for elucidating the anti-hypertrophic effects of Herpud1 and the underlying mechanism of pathological hypertrophy.
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Affiliation(s)
- Riko Fujioka
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Yamamoto
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Akihiro Maruta
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yoshihide Nakamura
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Naoomi Tominaga
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masako Inamitsu
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tetsuro Oda
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
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Samejima J, Okami J, Tanaka Y, Kobayashi S, Kimura T, Mukai M, Nagao T, Matsuoka H, Tsuboi M. 159P Optimization and validation of a circulating microRNA biomarker panel for early detection of lung cancer in a Japanese population. J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00413-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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12
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Fujii S, Kobayashi S, Chang Y, Nawata J, Yoshitomi R, Tanaka S, Kohno M, Nakamura Y, Ishiguchi H, Suetomi T, Uchinoumi H, Oda T, Okuda S, Okamura T, Yamamoto T, Yano M. RyR2-targeting therapy prevents left ventricular remodeling and ventricular tachycardia in post-infarction heart failure. J Mol Cell Cardiol 2023; 178:36-50. [PMID: 36963751 DOI: 10.1016/j.yjmcc.2023.03.007] [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: 01/16/2023] [Revised: 03/15/2023] [Accepted: 03/21/2023] [Indexed: 03/26/2023]
Abstract
BACKGROUND Dantrolene binds to the Leu601-Cys620 region of the N-terminal domain of cardiac ryanodine receptor (RyR2), which corresponds to the Leu590-Cys609 region of the skeletal ryanodine receptor, and suppresses diastolic Ca2+ leakage through RyR2. OBJECTIVE We investigated whether the chronic administration of dantrolene prevented left ventricular (LV) remodeling and ventricular tachycardia (VT) after myocardial infarction (MI) by the same mechanism with the mutation V3599K of RyR2, which indicated that the inhibition of diastolic Ca2+ leakage occurred by enhancing the binding affinity of calmodulin (CaM) to RyR2. METHODS AND RESULTS A left anterior descending coronary artery ligation MI model was developed in mice. Wild-type (WT) were divided into four groups: sham-operated mice (WT-Sham), sham-operated mice treated with dantrolene (WT-Sham-DAN), MI mice (WT-MI), and MI mice treated with dantrolene (WT-MI-DAN). Homozygous V3599K RyR2 knock-in (KI) mice were divided into two groups: sham-operated mice (KI-Sham) and MI mice (KI-MI). The mice were followed for 12 weeks. Survival was significantly higher in the WT-MI-DAN (73%) and KI-MI groups (70%) than the WT-MI group (40%). Echocardiography, pathological tissue, and epinephrine-induced VT studies showed that LV remodeling and VT were prevented in the WT-MI-DAN and KI-MI groups compared to the WT-MI group. An increase in diastolic Ca2+ spark frequency and a decrease in the binding affinity of CaM to the RyR2 were observed at 12 weeks after MI in the WT-MI group, although significant improvements in these values were observed in the WT-MI-DAN and KI-MI groups. CONCLUSIONS Pharmacological or genetic stabilization of RyR2 tetrameric structure improves survival after MI by suppressing LV remodeling and proarrhythmia.
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Affiliation(s)
- Shohei Fujii
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Yaowei Chang
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Junya Nawata
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Ryosuke Yoshitomi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Shinji Tanaka
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Michiaki Kohno
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Yoshihide Nakamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Hironori Ishiguchi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Takeshi Suetomi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Hitoshi Uchinoumi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Tetsuro Oda
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Shinichi Okuda
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Takeshi Yamamoto
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi 755-8505, Japan
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Yamaki T, Hatakeyama N, Murayama T, Funakura M, Hara T, Onodera S, Ito D, Yakufujiang M, Odaki M, Oka N, Kobayashi S. Prediction of voluntary movements of the upper extremities by resting state-brain regional glucose metabolism in patients with chronic severe brain injury: A pilot study. Hum Brain Mapp 2023; 44:3158-3167. [PMID: 36929226 PMCID: PMC10171500 DOI: 10.1002/hbm.26270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/24/2023] [Indexed: 03/18/2023] Open
Abstract
Confirmation of the exact voluntary movements of patients with disorder of consciousness following severe traumatic brain injury (TBI) is difficult because of the associated communication disturbances. In this pilot study, we investigated whether regional brain glucose metabolism assessed by 18 F-fluorodeoxyglucose positron emission tomography (FDG-PET) at rest could predict voluntary movement in severe TBI patients, particularly those with sufficient upper limb capacity to use communication devices. We visually and verbally instructed patients to clasp or open their hands. After video capture, three independent rehabilitation therapists determined whether the patients' movements were voluntary or involuntary. The results were compared with the standardized uptake value in the primary motor cortex, referring to the Penfield's homunculus, by resting state by FDG-PET imaged 1 year prior. Results showed that glucose uptake in the left (p = 0.0015) and right (p = 0.0121) proximal limb of the primary motor cortex, based on Penfield's homunculus on cerebral cartography, may reflect contralateral voluntary movement. Receiver operating characteristic curve analysis showed that a mean cutoff standardized uptake value of 5.47 ± 0.08 provided the best sensitivity and specificity for differentiating between voluntary and involuntary movements in each area. FDG-PET may be a useful and robust biomarker for predicting long-term recovery of motor function in severe TBI patients with disorders of consciousness.
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Affiliation(s)
- Tomohiro Yamaki
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan.,Division of Radiology, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Naoya Hatakeyama
- Division of Rehabilitation, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Takemi Murayama
- Division of Rehabilitation, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Mika Funakura
- Division of Rehabilitation, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Takuya Hara
- Division of Rehabilitation, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Shinji Onodera
- Division of Radiology, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Daisuke Ito
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Maidinamu Yakufujiang
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Masaru Odaki
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Nobuo Oka
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan.,Division of Radiology, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
| | - Shigeki Kobayashi
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, 3-30-1 Isobe, Mihama-ku, Chiba, 261-0012, Japan
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Uchida T, Oda T, Nawata J, Suetomi T, Uchinoumi H, Kobayashi S, Yamamoto T, Yano M. Defective calmodulin binding affinity to ryanodine receptor drives heart failure with preserved ejection fraction progression. Biophys J 2023; 122:235a. [PMID: 36783154 DOI: 10.1016/j.bpj.2022.11.1382] [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: 02/12/2023] Open
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15
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Nawata J, Yamamoto T, Uchida T, Suetomi T, Uchinoumi H, Oda T, Kobayashi S, Yano M. Dantrolene improves diastolic property of left ventricle in mineralcorticoid-induced hypertensive rats. Biophys J 2023; 122:235a. [PMID: 36783155 DOI: 10.1016/j.bpj.2022.11.1381] [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: 02/12/2023] Open
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16
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Yano Y, Kobayashi S, Uchida T, Chang Y, Nawata J, Fujii S, Nakamura Y, Suetomi T, Uchinoumi H, Oda T, Yamamoto T, Yano M. Stabilizing cardiac ryanodine receptor with dantrolene treatment prevents left ventricular remodeling in pressure-overloaded heart failure mice. Biochem Biophys Res Commun 2023; 642:175-184. [PMID: 36584481 DOI: 10.1016/j.bbrc.2022.12.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/14/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Dantrolene (DAN) directly binds to cardiac ryanodine receptor 2 (RyR2) through Leu601-Cys620 in the N-terminal domain and subsequently inhibits diastolic Ca2+ leakage through RyR2. We previously reported that therapy using RyR2 V3599K mutation, which inhibits diastolic Ca2+ leakage by enhancing calmodulin (CaM) binding ability to RyR2, prevents left ventricular (LV) remodeling in transverse aortic constriction (TAC) heart failure. Here, we examined whether chronic administration of DAN prevents LV remodeling in TAC heart failure via the same mechanism as genetic therapy. A pressure-overloaded hypertrophy mouse model was developed using TAC. Wild-type (WT) mice were divided into three groups: sham-operated mice (Sham group), TAC mice (TAC group), and TAC mice treated with DAN (TAC-DAN group, 20 mg/kg/day, i.p.). They were then followed up for 8 weeks. The survival rate was higher in the TAC-DAN group (83%) than in the TAC group (49%), and serial echocardiography studies and pathological tissue analysis showed that LV remodeling was significantly prevented in the TAC-DAN group compared to the TAC group. An increase in the diastolic Ca2+ spark frequency and a decrease in the binding affinity of CaM to RyR2 were observed at 8 weeks in the TAC group but not in the TAC-DAN group. Stabilization of RyR2 with DAN prevented LV remodeling and improved survival after TAC by enhancing CaM binding to RyR2 and inhibiting RyR2-mediated diastolic Ca2+ leakage.
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Affiliation(s)
- Yasutake Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Therapeutic Science for Heart Failure in the Elderly, Yamaguchi University School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Tomoyuki Uchida
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yaowei Chang
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Junya Nawata
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shohei Fujii
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yoshihide Nakamura
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Suetomi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hitoshi Uchinoumi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tetsuro Oda
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Yamamoto
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
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Chiyoda H, Kobayashi S, Yokoi K, Iwata O, Katano H. Acquired hydrocephalus following hypoxic ischemic encephalopathy without intraventricular hemorrhage: A case report. J Neonatal Perinatal Med 2023; 16:569-571. [PMID: 37718855 DOI: 10.3233/npm-210950] [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: 09/19/2023]
Abstract
The most common cause of acquired hydrocephalus in infants is hemorrhage, most often as a consequence of prematurity. Other important causes include neoplasm and infection, usually bacterial meningitis. Hypoxic ischemic encephalopathy (HIE) in term infants usually results in secondary microcephaly. We report an infant with severe HIE at birth treated by therapeutic hypothermia who developed progressive acquired hydrocephalus over 2 months, although no cause of the hydrocephalus was identified. Although hydrocephalus, even intraventricular hemorrhage, is uncommon in term infants with HIE, careful follow-up of the head circumference is important, even if no findings indicating possible causes of hydrocephalus, such as hemorrhage, are detected on ultrasound or magnetic resonance imaging.
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Affiliation(s)
- H Chiyoda
- Department of Pediatrics, Nagoya City University West Medical Center, Nagoya, Japan
| | - S Kobayashi
- Department of Pediatrics, Nagoya City University West Medical Center, Nagoya, Japan
| | - K Yokoi
- Department of Pediatrics, Nagoya City University West Medical Center, Nagoya, Japan
| | - O Iwata
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - H Katano
- Department of Neurosurgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Nocerino E, Witteveen C, Kobayashi S, Forslund OK, Matsubara N, Zubayer A, Mazza F, Kawaguchi S, Hoshikawa A, Umegaki I, Sugiyama J, Yoshimura K, Sassa Y, von Rohr FO, Månsson M. Nuclear and magnetic spin structure of the antiferromagnetic triangular lattice compound LiCrTe 2 investigated by [Formula: see text]SR, neutron and X-ray diffraction. Sci Rep 2022; 12:21657. [PMID: 36522382 PMCID: PMC9755140 DOI: 10.1038/s41598-022-25921-9] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Two-dimensional (2D) triangular lattice antiferromagnets (2D-TLA) often manifest intriguing physical and technological properties, due to the strong interplay between lattice geometry and electronic properties. The recently synthesized 2-dimensional transition metal dichalcogenide LiCrTe[Formula: see text], being a 2D-TLA, enriched the range of materials which can present such properties. In this work, muon spin rotation ([Formula: see text]SR) and neutron powder diffraction (NPD) have been utilized to reveal the true magnetic nature and ground state of LiCrTe[Formula: see text]. From high-resolution NPD the magnetic spin order at base-temperature is not, as previously suggested, helical, but rather collinear antiferromagnetic (AFM) with ferromagnetic (FM) spin coupling within the ab-plane and AFM coupling along the c-axis. The value if the ordered magnetic Cr moment is established as [Formula: see text]. From detailed [Formula: see text]SR measurements we observe an AFM ordering temperature [Formula: see text] K. This value is remarkably higher than the one previously reported by magnetic bulk measurements. From [Formula: see text]SR we are able to extract the magnetic order parameter, whose critical exponent allows us to categorize LiCrTe[Formula: see text] in the 3D Heisenberg AFM universality class. Finally, by combining our magnetic studies with high-resolution synchrotron X-ray diffraction (XRD), we find a clear coupling between the nuclear and magnetic spin lattices. This suggests the possibility for a strong magnon-phonon coupling, similar to what has been previously observed in the closely related compound LiCrO[Formula: see text].
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Affiliation(s)
- E. Nocerino
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
| | - C. Witteveen
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
- Department of Physics, University of Zürich, Winterthurerstr. 190, 8057 Zurich, Switzerland
| | - S. Kobayashi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, 679-5198 Japan
| | - O. K. Forslund
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - N. Matsubara
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
| | - A. Zubayer
- Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
| | - F. Mazza
- Insitute of Solid State Physics, TU Wien, Wiedner Haupstraße 8-10, 1040 Vienna, Austria
| | - S. Kawaguchi
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, 679-5198 Japan
| | - A. Hoshikawa
- Frontier Research Center for Applied Atomic Sciences, Ibaraki University, 162-1 Shirakata, Tokai, Ibaraki 319-1106 Japan
| | - I. Umegaki
- Muon Science Laboratory, Institute of Materials Structure Science, KEK, Tokai, Ibaraki 319-1106 Japan
| | - J. Sugiyama
- Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki 319-1106 Japan
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 Japan
| | - K. Yoshimura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, 606-8502 Japan
| | - Y. Sassa
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - F. O. von Rohr
- Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland
| | - M. Månsson
- KTH Royal Institute of Technology, Department of Applied Physics, Alba Nova University Center, 114 21 Stockholm, Sweden
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Yamaki T, Higuchi Y, Yokota H, Iwadate Y, Matsutani T, Hirono S, Sasaki H, Ryota S, Toda M, Onodera S, Oka N, Kobayashi S. The role of optimal cut-off diagnosis in 11C-methionine PET for differentiation of intracranial brain tumor from non-neoplastic lesions before treatment. Clin Imaging 2022; 92:124-130. [DOI: 10.1016/j.clinimag.2022.10.007] [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] [Received: 01/24/2022] [Revised: 10/05/2022] [Accepted: 10/12/2022] [Indexed: 11/27/2022]
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20
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Zhang P, Ohshima S, Zhao H, Deng C, Kobayashi S, Kado S, Minami T, Matoike R, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Development and initial results of 320 GHz interferometer system in Heliotron J. Rev Sci Instrum 2022; 93:113519. [PMID: 36461432 DOI: 10.1063/5.0101808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/02/2022] [Indexed: 06/17/2023]
Abstract
A new 320 GHz solid-state source interferometer is installed in the Heliotron J helical device to explore the physics of high-density plasmas (ne > 2-3 × 1019 m-3, typically) realized with advanced fueling techniques. This interferometry system is of the Michelson type and is based on the heterodyne principle, with two independent solid-state sources that can deliver an output power of up to 50 mW. A high time resolution measurement of <1 µs can be derived by tuning the frequency of one source in the frequency range of 312-324 GHz on the new system, which can realize the fluctuation measurement. We successfully measured the line-averaged electron density in high-density plasma experiments. The measured density agreed well with a microwave interferometer measurement using a different viewing chord, demonstrating that the new system can be used for routine diagnostics of electron density in Heliotron J.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, California 90095-1594, USA
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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21
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Iwata A, Kado S, Murakumo M, Shikama T, Motojima G, Mori A, Feng C, Okada H, Minami T, Ohshima S, Kobayashi S, Ishizawa A, Nakamura Y, Konoshima S, Mizuuchi T, Nagasaki K. Measurement of Pa α line from pellet ablation cloud in Heliotron J. Rev Sci Instrum 2022; 93:113537. [PMID: 36461543 DOI: 10.1063/5.0101885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/10/2022] [Indexed: 06/17/2023]
Abstract
The Paα line (1875.13 nm) in the near-infrared (NIR) region was evaluated to apply Stark broadening of the line spectrum to the electron density measurement of the small-pellet ablation cloud in Heliotron J, a medium-sized helical-axis heliotron device. Paα is three-to-four times broader than the visible Hβ line (486.13 nm) for the same electron density. Using a portable NIR spectrometer, preliminary proof-of-concept experiments determined the marginal density, below which the broadening was undetectable. The lower detection density limit can be decreased using a narrower entrance slit or a denser grating.
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Affiliation(s)
- A Iwata
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - M Murakumo
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - T Shikama
- Graduate School of Engineering, Kyoto University, Kyoto, Japan
| | - G Motojima
- National Institute for Fusion Science, Gifu, Japan
| | - A Mori
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - C Feng
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - A Ishizawa
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - Y Nakamura
- Graduate School of Energy Science, Kyoto University, Kyoto, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Kyoto, Japan
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22
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Hutchison L, D’Souza N, Grayson J, Hiller C, Kobayashi S, Simic M. Placebo gait retraining for use in knee osteoarthritis clinical trials does not change surrogate knee load measures: A randomized pilot study. J Sci Med Sport 2022. [DOI: 10.1016/j.jsams.2022.09.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Sato Y, Kojima T, Kawahara Y, Kobayashi S. Predictive factors associated with outcome in patients six months after mild to moderate aneurysmal subarachnoid hemorrhage: Focus on neuropsychological tests conducted one month after the event. Interdisciplinary Neurosurgery 2022. [DOI: 10.1016/j.inat.2022.101707] [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] Open
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24
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Rong C, Luo Z, Wang T, Qin Y, Wu J, Guo Y, Hu Y, Kong Z, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Li YY. Biomass retention and microbial segregation to offset the impacts of seasonal temperatures for a pilot-scale integrated fixed-film activated sludge partial nitritation-anammox (IFAS-PN/A) treating anaerobically pretreated municipal wastewater. Water Res 2022; 225:119194. [PMID: 36215833 DOI: 10.1016/j.watres.2022.119194] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 04/27/2022] [Revised: 07/17/2022] [Accepted: 09/30/2022] [Indexed: 05/06/2023]
Abstract
Partial nitritation-anammox (PN/A) is a promising deammonification process to develop energy-neutral wastewater treatment plants. However, the mainstream application of PN/A still faces the challenges of low nitrogen concentration and low temperatures, and has not been studied under a realistic condition of large-scale reactor (kiloliter level), real municipal wastewater (MWW) and seasonal temperatures. In this research, a pilot-scale one-stage PN/A, with integrated fixed-film activated sludge (IFAS) configuration, was operated to treat the real MWW pretreated by anaerobic membrane bioreactor. The removal efficiency of total nitrogen (TN) was 79.4%, 75.7% and 65.9% at 25, 20 and 15°C, corresponding to the effluent TN of 7.3, 9.7 and 12.0 mg/L, respectively. The suppression of ammonium-oxidizing bacteria (AOB) and anammox bacteria (AnAOB) occurred at lower temperatures, and the significant decrease in AOB treatment capacity was the reason for the poorer nitrogen removal at 15°C. Biomass retention and microbial segregation were successfully achieved. Specifically, Candidatus_Brocadia and Candidatus_Kuenenia were main AnAOB genera and mainly enriched on carriers, Nitrosomonas and uncultured f_Chitinophagaceae were main AOB genera and mainly distributed in suspended sludge and retained by sedimentation tank. Moreover, nitrite-oxidizing bacteria (NOB) were sufficiently suppressed by intermittent aeration and low dissolved oxygen, the presence of heterotrophic bacteria upgraded the PN/A to a simultaneous partial nitritation, anammox, denitrification, and COD oxidation (SNADCO) system, which improved the overall removal of TN and COD. The results of this investigation clearly evidence the strong feasibility of PN/A as a mainstream nitrogen removal process in temperate climates.
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Affiliation(s)
- Chao Rong
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Zibin Luo
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Yu Qin
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Jiang Wu
- Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Yan Guo
- Department of Environmental Engineering, University of Science and Technology Beijing, Xueyuan Road, Haidian District, Beijing 100083, China
| | - Yisong Hu
- Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Zhe Kong
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome, Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu-You Li
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan.
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25
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Nawata T, Sakai H, Honda T, Otsuka M, Fujita H, Uchinoumi H, Kobayashi S, Yamamoto T, Asagiri M, Yano M. Dantrolene, a stabilizer of the ryanodine receptor, prevents collagen-induced arthritis. Biochem Biophys Res Commun 2022; 624:141-145. [PMID: 35940127 DOI: 10.1016/j.bbrc.2022.07.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022]
Abstract
Dantrolene inhibits Ca2+ leakage from destabilized ryanodine receptors and therefore may serve as a therapeutic agent against endoplasmic reticulum stress-associated diseases. However, its effectiveness in treating autoimmune diseases remains unclear. Here, we investigated the effect of dantrolene on collagen-induced arthritis (CIA) in mice. Oral administration of dantrolene resulted in significantly lower arthritic scores in both male and female CIA mice than in the control mice. Micro-computed tomographic and histological analyses showed that dantrolene suppressed bone and chondral destruction. The serum levels of anti-type II collagen (CII) IgG were positively correlated with the arthritic scores (r = 0.704, p < 0.01). In addition, the serum levels of anti-CII IgG were significantly lower in the dantrolene group than in the control group (p < 0.05). These results demonstrate that oral administration of dantrolene to CIA mice inhibits the production of serum anti-CII IgG and consequently prevents arthritis. Therefore, dantrolene may be a potential anti-rheumatic drug.
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Affiliation(s)
- Takashi Nawata
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan.
| | - Hiroki Sakai
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Takeshi Honda
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Marina Otsuka
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Hina Fujita
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Hitoshi Uchinoumi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Takeshi Yamamoto
- Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Masataka Asagiri
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, 755-8505, Japan
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26
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Kobayashi S, Yamamoto T, Yoshiga Y, Okamura T, Kawano R, Yano M. Stabilizing Tetrameric Structure of Ryanodine Receptor Cures Lethal Arrhythmia in Heart Failure. Circ Arrhythm Electrophysiol 2022; 15:e011220. [PMID: 36197726 DOI: 10.1161/circep.122.011220] [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: 11/16/2022]
Affiliation(s)
- Shigeki Kobayashi
- Division of Cardiology, Department of Medicine and Clinical Science (S.K., Y.Y., T.O., M.Y.)
| | - Takeshi Yamamoto
- Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Ube, Japan (T.Y.)
| | - Yasuhiro Yoshiga
- Division of Cardiology, Department of Medicine and Clinical Science (S.K., Y.Y., T.O., M.Y.)
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science (S.K., Y.Y., T.O., M.Y.)
| | - Reo Kawano
- Innovation Center for Translational Research, National Center for Geriatrics and Gerontology, Aichi, Japan (R.K.)
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science (S.K., Y.Y., T.O., M.Y.)
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27
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Ogura K, Hamazaki N, Kamiya K, Kitamura T, Kobayashi S, Ichikawa T, Yamashita M, Uchida S, Noda T, Nagumo D, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Ako J, Miyaji K. Perme ICU Mobility Score as a comprehensive assessment tool of acute-phase rehabilitation is correlated with clinical outcomes in patients after cardiovascular surgery. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Early mobility therapy in the intensive care unit (ICU) is widely employed to improve the physical function and prognosis of patients with critically ill. On the other hand, patients who undergo cardiovascular surgery frequently suffer from disabilities after ICU care due to their cardiopulmonary conditions and treatments. However, few studies have reported the procedures and assessments of acute-phase rehabilitation in these patients. Recently, the Perme ICU Mobility Score (Perme Score) was developed as a reliable tool to assess comprehensive mobility status of patients in the ICU. We hypothesised that the Perme Score is a useful tool for assessing the mobility levels in the ICU and predicting clinical outcomes in patients undergoing acute-phase rehabilitation after cardiovascular surgery.
Purpose
To investigate the associations between the Perme Score within the second days after cardiovascular surgery and the patients' clinical outcomes, including physical function and the incidence of clinical events.
Methods
We studied 224 consecutive patients (34.4% female; aged 65±13 years) who were admitted to the ICU of a tertiary academic hospital after cardiac and/or major vascular surgery. Clinical characteristics including patient profiles, comorbidities, surgical details and APACHE II and SOFA scores were evaluated on ICU admission. The Perme Score contains categories on mental status, potential mobility barriers, muscle strength and mobility level, with higher scores indicating greater activity levels in the ICU. We assessed the Perme Score within the second days after the surgery. As a physical function at hospital discharge, we measured the six-minute walk distance (6MWD). The primary endpoint was a composite outcome of the number of all-cause mortality and/or all-cause unplanned readmission. We analysed the associations of the Perme Score with the 6MWD and the incidence of clinical events using multiple regression analysis and multivariate Poisson regression analysis, respectively.
Results
After adjusting for clinical confounding factors, a higher Perme Score was an independent factor of a higher 6MWD (Table 1). During the median follow-up period of 1.3 years, 51 cases of all-cause mortality/readmission occurred in 37 (16.5%) patients, with an incidence rate of 18.6/100 person-years. In the multivariate Poisson regression analysis, even after adjusting for the severity score in the ICU, a higher Perme Score was significantly and independently associated with lower rates of all-cause clinical events (adjusted incident rate ratio: 0.96, 95% confidence interval: 0.93–0.99, P=0.008, Figure 1).
Conclusions
The Perme Score within the second days after cardiovascular surgery is correlated with physical function at hospital discharge and the incidence of clinical events after discharge. Thus, a comprehensive assessment of acute-phase rehabilitation after cardiovascular surgery may be useful in predicting clinical outcomes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - T Kitamura
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University School of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - K Miyaji
- Kitasato University School of Medicine, Department of Cardiovascular Surgery , Sagamihara , Japan
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28
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Murayama Y, Kitasato L, Ishizue N, Suzuki M, Mitani Y, Saito D, Matsuura G, Sato T, Kobayashi S, Nakamura H, Oikawa J, Kishihara J, Fukaya H, Niwano S, Ako J. Evaluation of the direct protective effects of Canagliflozin on the Isoproterenol-induced cell injury in rat cardiomyocytes. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sodium-glucose cotransporter-2 (SGLT2) inhibitors are agents that act by inhibiting glucose and sodium reabsorption in the proximal renal tubule which promotes urinary glucose excretion. More recently, significant benefit data of SGLT2 inhibitors in patients with heart failure, independent of the presence of type 2 diabetes has been reported. We have previously demonstrated that Canagliflozin (Cana), a SGLT2 inhibitor, reduced the ventricular effective refractory period in isoproterenol (ISP)-induced myocardial injury rat model accompanied with the suppression of reactive oxygen species and the elevation of ketone bodies, suggesting the effect of Cana on electrical cardiac remodeling. The direct effect of Cana to the cardiomyocytes and its underlying molecular mechanism was remained to be clarified. We therefore established an ISP-induced neonatal rat ventricular cardiomyocyte (NRVCM) in vitro model, pretreated with Cana and/or ketone bodies.
Methods
Primary NRVCM were isolated from Wistar rats, were pretreated by Cana with or without βOHB (the most abundant ketone body in circulation), followed by a stimulation of ISP (10μM). Cells without drug or ketone body pretreatment were used as control. We then analyzed its effect on cell viability, apoptosis, and mitochondrial membrane potential using MTT assay, TUNEL assay, and mitochondrial membrane potential assay, respectively. MTT assay was also performed with or without PI3k inhibitor, LY294002. The end-labeling of DNA fragmentation were labelled with FITC, followed by the nuclei counterstain with DAPI and were observed with confocal microscope. The apoptotic index was defined as the percentage of TUNEL positive cells / total nuclei.
Results
Cana rescued the reduction of NRVCM cell viability induced by ISP stimulation for 24 hours which was inhibited by LY294002 compared to cells without pretreatment. Interestingly, pretreatment of βOHB with or without Cana improved also the NRCVM cell viability whereas there was no significant difference between these two conditions or with cells treated with Cana only, suggesting the direct protective effect of Cana. In 48 hours of ISP stimulation, the apoptotic index intends to decrease in Cana and/or βOHB compared to cells without pretreatment (Figure 1). Although the mitochondrial function was maintained in Cana-pretreated cells compared to cells without pretreatment, there was no significant difference in βOHB-pretreated cells.
Conclusions
Cana has a direct protective effect on cardiomyocytes cell viability, apoptosis as well as the mitochondrial function impaired by ISP through the cell survival signaling PI3K/Akt pathway. This brings a new insight to the therapeutic target of cardiovascular disease.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Murayama
- Kitasato University School of Medicine , Sagamihara , Japan
| | - L Kitasato
- Kitasato University School of Medicine , Sagamihara , Japan
| | - N Ishizue
- Kitasato University School of Medicine , Sagamihara , Japan
| | - M Suzuki
- Kitasato University School of Medicine , Sagamihara , Japan
| | - Y Mitani
- Kitasato University School of Medicine , Sagamihara , Japan
| | - D Saito
- Kitasato University School of Medicine , Sagamihara , Japan
| | - G Matsuura
- Kitasato University School of Medicine , Sagamihara , Japan
| | - T Sato
- Kitasato University School of Medicine , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University School of Medicine , Sagamihara , Japan
| | - H Nakamura
- Kitasato University School of Medicine , Sagamihara , Japan
| | - J Oikawa
- Kitasato University School of Medicine , Sagamihara , Japan
| | - J Kishihara
- Kitasato University School of Medicine , Sagamihara , Japan
| | - H Fukaya
- Kitasato University School of Medicine , Sagamihara , Japan
| | - S Niwano
- Kitasato University School of Medicine , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine , Sagamihara , Japan
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29
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Nagumo D, Hamazaki N, Kamiya K, Obara S, Kobayashi S, Nozaki K, Ichikawa T, Yamashita M, Uchida S, Noda T, Ogura K, Maekawa E, Yamaoka-Tojo M, Matsunaga A, Ako J. Impact of small-airway disease on exercise intolerance and long-term outcomes in patients with heart failure and reduced or preserved ejection fraction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Exercise intolerance in patients with heart failure (HF) is a strong indicator of a poor prognosis. As the respiratory impairment in HF patients, the small airway is reportedly more susceptible than central airways, which results in increased airway resistance and may cause poor outcomes. However, the impact of small-airway disease (SAD) on exercise intolerance and prognosis in patients with HF is still unclear.
Purpose
We investigated the associations between SAD and exercise intolerance in patients with HF, and the clinical significance of SAD for long-term clinical events with a reduced or preserved ejection fraction.
Methods
We reviewed 1015 patients with HF (mean age, 66.9±14.6 years; male, 64.5%) admitted for medical treatment. Patients with a prior history of chronic respiratory disease or an obstructive lung pattern – defined as the forced expiratory volume (%) in 1 s relative to <70% forced vital capacity using spirometry – were excluded. Characteristics including HF aetiology, comorbidities conditions, medications, blood parameters, and echocardiographic variables were obtained from clinical records. All patients underwent spirometry at hospital discharge, and SAD was defined as the maximum mid-expiratory flow (%) relative to a <60% predicted value. At hospital discharge, we measured 6-min walk distance (6MWD), and <300 m was considered as exercise intolerance. The primary endpoint was a composite clinical event of all-cause death and/or unplanned readmission for HF. Multivariate logistic regression analysis was used to assess the association between SAD and exercise intolerance. The multivariate Cox proportional hazard model was used to clarify whether SAD was an independent predictor for the incidence of clinical events. We also performed subgroup analyses in each multivariate analysis based on a left ventricular ejection fraction (LVEF) of 40%.
Result
SAD was observed in 479 (47.2%) patients. LVEF subgroups included 458 (45.1%) and 518 (51.0%) patients with LVEF <40% and ≥40%, respectively. After adjusting for clinical characteristics, SAD was independently associated with 6MWD <300 m (Figure 1). Moreover, this association was consistently observed in the LVEF <40% and ≥40% (Figure 1). During the median follow-up period of 1.5 years, all-cause death/readmission occurred in 431 patients (42.5%), and the incidence rate was 17.5/100 person-years. In the multivariate Cox proportional hazard model, SAD was independently associated with lower event-free survival rates in all patients and the LVEF <40% subgroup, but not LVEF ≥40% subgroup (Figure 2A, B, and C, respectively).
Conclusion
This study is the first to reveal that SAD is associated with exercise intolerance in patients with HF regardless of LVEF. Moreover, SAD may have a predictive significance for long-term outcomes in patients with HF and subgroups with reduced, but not preserved ejection fraction.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- D Nagumo
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - N Hamazaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Kamiya
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - S Obara
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - S Kobayashi
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - K Nozaki
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - T Ichikawa
- Kitasato University Hospital, Department of Rehabilitation , Sagamihara , Japan
| | - M Yamashita
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - S Uchida
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - T Noda
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - K Ogura
- Kitasato University Graduate School of Medical Sciences, Department of Rehabilitation Sciences , Sagamihara , Japan
| | - E Maekawa
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
| | - M Yamaoka-Tojo
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - A Matsunaga
- Kitasato University of Allied Health Sciences, Department of Rehabilitation , Sagamihara , Japan
| | - J Ako
- Kitasato University School of Medicine, Department of Cardiovascular Medicine , Sagamihara , Japan
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Eguchi T, Matsuoka S, Iwaya M, Uehara T, Kobayashi S, Ide S, Mishima S, Takeda T, Miura K, Hamanaka K, Shimizu K. MA03.07 Accurate Intraoperative Diagnosis of Spread Through Air Spaces (STAS) Using a Cryo Embedding Medium Inflation Method. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.091] [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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Ishiguchi H, Uchida M, Okamura T, Kobayashi S, Yano M. Acute heart failure following the initiation of cabozantinib, a multikinase inhibitor: A case report. J Cardiol Cases 2022; 26:217-220. [DOI: 10.1016/j.jccase.2022.04.012] [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] [Received: 03/06/2022] [Revised: 04/16/2022] [Accepted: 04/25/2022] [Indexed: 10/17/2022] Open
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Ueno M, Morizane C, Ikeda M, Ozaka M, Nagashima F, Kataoka T, Mizusawa J, Ohba A, Kobayashi S, Imaoka H, Kasuga A, Okano N, Nagasaka Y, K. Kurishita, Tomatsuri S, Sasaki M, Shibata T, Nakamura K, Furuse J, Okusaka T. 64P Phase I/II study of nivolumab plus lenvatinib for advanced biliary tract cancer (JCOG1808/NCCH1817, SNIPE). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.092] [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: 11/01/2022] Open
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Ishiguchi H, Yoshiga Y, Shimizu A, Ueyama T, Fukuda M, Kato T, Fujii S, Hisaoka M, Uchida T, Omuro T, Okamura T, Kobayashi S, Yano M. Long-term events following catheter-ablation for atrial fibrillation in heart failure with preserved ejection fraction. ESC Heart Fail 2022; 9:3505-3518. [PMID: 35894764 DOI: 10.1002/ehf2.14079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/06/2022] [Accepted: 07/05/2022] [Indexed: 11/07/2022] Open
Abstract
AIMS Data regarding prognostic events following catheter ablation (CA) for atrial fibrillation (AF) in patients with heart failure with preserved ejection fraction (HFpEF) are scarce. We conducted this study to compare the incidence of major adverse clinical events (MACE) following CA for AF between patients with HFpEF and those with systolic heart failure (HF). METHODS AND RESULTS This single-centre observational study included 142 patients with HF who underwent CA for AF (median follow-up: 4.0 [2.6, 6.3] years). The patients were grouped based on the presence of HFpEF (n = 84) and systolic HF (left ventricular ejection fraction <50%, n = 58). We compared the cumulative incidence and incidence rate of MACE, comprising all-cause death, unplanned cardiovascular hospitalization (CVH), and HF hospitalization (HFH) between both groups and the number of HFH before and after CA in each group. Multivariate analysis was performed to identify the predictors of MACE in patients with HFpEF. The incidence of MACE was comparable between the groups (following the first procedure: HFpEF: 23%, 4.7/100 person-years, vs. systolic HF: 28%, 6.6/100 person-years, P = 0.18; last procedure: 20%, 4.8/100 person-years, vs. 24%, 6.9/100 person-years, P = 0.21). Although the incidence of HFH was lower in patients with HFpEF than in those with systolic HF (first procedure: 14%, 2.9/100 person-years, vs. 24%, 5.7/100 person-years, P = 0.07; last procedure: 11%, 2.5/100 person-years, vs. 24%, 6.9/100 person-years, P = 0.01), the incidence of CVH was higher (first procedure: 8%, 1.7/100 person-years, vs. 5%, 1.2/100 person-years, P = 0.74; last procedure: 6%, 1.4/100 person-years, vs. 2%, 0.5/100 person-years, P = 0.4). The number of HFH significantly decreased in both groups after CA (HFpEF: 1 hospitalization [the first and third quartiles: 0, 1] in pre-CA, vs. 0 hospitalizations [0, 0] in post-CA, P < 0.0001; systolic HF: 1 hospitalization [0, 1], vs. 0 hospitalizations [0, 0], P < 0.005). The proportion of HFH among total clinical events was significantly smaller in patients with HFpEF than in those with systolic HF (following the first procedure: 56% vs. 88%, P < 0.005; last procedure: 52% vs. 92%, P < 0.005). CONCLUSIONS CA for AF could be beneficial for patients with HFpEF, similar to those with systolic HF. However, clinical events other than HFH should be considered cautiously in such patients.
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Affiliation(s)
- Hironori Ishiguchi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yasuhiro Yoshiga
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Akihiko Shimizu
- Department of Cardiology, Ube-Kohsan Central Hospital, Ube, Japan
| | - Takeshi Ueyama
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masakazu Fukuda
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takayoshi Kato
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shohei Fujii
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masahiro Hisaoka
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Tomoyuki Uchida
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takuya Omuro
- Faculty of Health Sciences, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shigeki Kobayashi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Sakai C, Mikawa M, Yamamoto T, Uchida T, Nakamura Y, Akase H, Suetomi T, Tominaga N, Inamitsu M, Oda T, Okamura T, Kobayashi S, Yano M. Dantrolene reduces platelet-derived growth factor (PDGF)-induced vascular smooth muscle cell proliferation and neointimal formation following vascular injury in mice. Biochem Biophys Res Commun 2022; 623:51-58. [PMID: 35872542 DOI: 10.1016/j.bbrc.2022.07.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 06/29/2022] [Accepted: 07/11/2022] [Indexed: 11/02/2022]
Abstract
Dantrolene is a ryanodine receptor blocker that is used clinically for treatment of malignant hyperthermia. This study was conducted using murine aortic vascular smooth muscle cells (MOVAS) and a mouse arterial injury model to investigate the inhibitory effect of dantrolene on smooth muscle cell proliferation and migration. We investigated whether dantrolene suppressed platelet-derived growth factor (PDGF)-induced vascular smooth muscle cell proliferation and migration in vitro. The effect of dantrolene on smooth muscle phenotype was evaluated using immunostaining. In addition, smooth muscle cell proliferation and phenotype switching were tested by applying dantrolene around blood vessels using a mouse arterial injury model. Dantrolene inhibited PDGF-induced cell proliferation and migration of MOVAS. Dantrolene also inhibited the switch from contractile to synthetic phenotype both in vitro and in vivo. Dantrolene is effective at inhibiting vascular smooth muscle cell proliferation, migration, and neointimal formation following arterial injury in mice.
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Affiliation(s)
- Chihiro Sakai
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Mei Mikawa
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Yamamoto
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Tomoyuki Uchida
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Yoshihide Nakamura
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hideaki Akase
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takeshi Suetomi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Naoomi Tominaga
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masako Inamitsu
- Department of Laboratory Medicine, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Tetsuro Oda
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Takayuki Okamura
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan
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Mikawa M, Sakai C, Yamamoto T, Nakamura Y, Tanaka S, Tominaga N, Inamitsu M, Oda T, Kobayashi S, Yano M. Herpud1 suppress angiotensin II induced hypertrophy in cardiomyocytes. Biochem Biophys Rep 2022; 30:101248. [PMID: 35313646 PMCID: PMC8933685 DOI: 10.1016/j.bbrep.2022.101248] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/26/2022] [Accepted: 03/07/2022] [Indexed: 11/05/2022] Open
Abstract
Purpose The purpose of this study was to analyze the role of homocysteine-responsive endoplasmic reticulum-resident ubiquitin-like domain member 1 (Herpud1) gene in the development of cardiomyocyte hypertrophy. Method In order to examine the effect of suppressing Herpud1 expression, Herpud1 small interfering RNA (siRNA) was introduced into H9C2 cells, which are cell lines derived from rat myocardium, and the degree of Herpud1 protein expression and cell hypertrophy in the Herpud1 siRNA-transfected group and the control group was compared by immunostaining 48 h after Herrpud1 siRNA introduction. To examine whether hypertrophy induced by angiotensin II (Ang II) can be suppressed by the overexpression of Herpud1, the green fluorescent protein (GFP)-Herpud1 plasmid was introduced into H9C2 cells, and the degree of cell hypertrophy was examined in the GFP-Herpud1-and control groups for 48 h. Nuclear translocation of nuclear factor of activated T-cells, cytoplasmic 4 (NFATc4), a transcription factor for hypertrophic genes, was also examined. Results [1] Herpud1 siRNA-transfected cells showed decreased Herpud1 protein expression and hypertrophy formation compared to control cells [2]; Overexpression of Herpud1 suppresses Ang II-induced cell hypertrophy; and [3] Overexpression of Herpud1 inhibits nuclear translocation of NFATc4. Discussion It was suggested that Herpud1 might be an anti-hypertrophic gene in Ang II induced cardiomyocytes hypertrophy. Silencing Herpud1 resulting hypertrophy of cardiomyocyte. Transient overexpression of Herpud1supress Ang II induced hypertrophy of cardiomyocyte. Silencing Herpud1 accelerate the NFAT nuclear translocation. Overexpression of Herpud1 block the NFAT nuclear translocation.
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Takahashi K, Tomoda Y, Kadena S, Kanbayashi T, Kobayashi S, Kato R. Guillain-Barré syndrome after BNT162b2 (Pfizer-BioNTec) vaccination. QJM 2022; 115:331-333. [PMID: 35426946 DOI: 10.1093/qjmed/hcac102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/09/2022] [Indexed: 12/21/2022] Open
Affiliation(s)
- K Takahashi
- From the Department of General Medicine, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashi-ku, Tokyo 174-0051, Japan
| | - Y Tomoda
- From the Department of General Medicine, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashi-ku, Tokyo 174-0051, Japan
| | - S Kadena
- From the Department of General Medicine, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashi-ku, Tokyo 174-0051, Japan
| | - T Kanbayashi
- Department of Neurology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8606, Japan
| | - S Kobayashi
- Department of Neurology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8606, Japan
| | - R Kato
- From the Department of General Medicine, Itabashi Chuo Medical Center, 2-12-7 Azusawa, Itabashi-ku, Tokyo 174-0051, Japan
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Yamaki T, Takahashi K, Azuhata O, Itou D, Yakufujiang M, Oka N, Odaki M, Kobayashi S. Longitudinal CT evaluation of transdermal scopolamine for aspiration pneumonia with sialorrhea in severe chronic brain injury: A case series. SAGE Open Med Case Rep 2022; 10:2050313X221096227. [PMID: 35548103 PMCID: PMC9082737 DOI: 10.1177/2050313x221096227] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 04/06/2022] [Indexed: 11/16/2022] Open
Abstract
Sialorrhea is a major cause of recurrent aspiration pneumonia in severe chronic brain injury. Previous reports have shown that transdermal scopolamine can decrease saliva production. We present four patients with severe chronic brain injury who experienced repeat aspiration pneumonia with sialorrhea. Longitudinal computed tomography examinations to assess the therapeutic effect were performed in all four cases before and after transdermal scopolamine. Transdermal scopolamine was applied as a patch (0.1 g/2.5 cm2) behind the earlobe every 24 h after confirming the absence of glaucoma. Patches were formulated as an in-hospital preparation (scopolamine butylbromide 0.25 g and hydrophilic cream 4.75 g) under the approval of our institutional review board. Longitudinal computed tomography after transdermal scopolamine use showed a decrease in pleural effusions associated with continuous aspiration pneumonia in all four cases. The data from repeat computed tomography suggest that long-term transdermal scopolamine for reducing saliva production may be a reasonable option for appropriate palliative care in severe chronic brain injury patients.
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Affiliation(s)
- Tomohiro Yamaki
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Kyoko Takahashi
- Division of Pharmacy, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Osamu Azuhata
- Division of Pharmacy, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Daisuke Itou
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Madinum Yakufujiang
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Nobuo Oka
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Masaru Odaki
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Shigeki Kobayashi
- Division of Neurosurgery and PET imaging, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
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Guo Y, Sanjaya EH, Rong C, Wang T, Luo Z, Chen H, Wang H, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Li YY. Treating the filtrate of mainstream anaerobic membrane bioreactor with the pilot-scale sludge-type one-stage partial nitritation/anammox process operated from 25 to 15 °C. Bioresour Technol 2022; 351:127062. [PMID: 35351558 DOI: 10.1016/j.biortech.2022.127062] [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: 01/28/2022] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
At ambient temperature condition, the one-stage partial nitritation/anammox (PNA) process has been successfully adopted to treat the filtrate from the mainstream anaerobic membrane bioreactor (AnMBR). However, there is no investigation of the performance of this process at low-temperature condition. In this study, the nitrogen removal performance of a pilot-scale PNA reactor at the temperature of 15 °C for treating the filtrate of a mainstream AnMBR was investigated. The nitrogen removal rate of 0.09 kg/m3/d and the nitrogen removal efficiency of 37.6% were achieved. The anammox reaction was the rate-limiting step of the nitrogen removal. Nitrogen removal was attributed in part to denitrification activity. The microbial community analysis confirmed that the main functional bacteria comprised of genus Nitrosomonas and genus Kuenenia. In sum, this research demonstrated the applicability of PNA process for mainstream AnMBR filtrate treatment to some extent and enriched the related knowledge.
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Affiliation(s)
- Yan Guo
- Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Eli Hendrik Sanjaya
- Department of Chemistry, State University of Malang (Universitas Negeri Malang), Jl. Semarang No. 5, Malang, East Java 65145, Indonesia
| | - Chao Rong
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Zibin Luo
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Hong Chen
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science & Technology, Changsha 410004, PR China
| | - Hong Wang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science & Technology, Changsha 410004, PR China
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd, 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd, 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba Aoba-ku, Sendai, Miyagi 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
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Rong C, Wang T, Luo Z, Guo Y, Kong Z, Wu J, Qin Y, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Li YY. Seasonal temperatures impact on the mass flows in the innovative integrated process of anaerobic membrane bioreactor and one-stage partial nitritation-anammox for the treatment of municipal wastewater. Bioresour Technol 2022; 349:126864. [PMID: 35183723 DOI: 10.1016/j.biortech.2022.126864] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 12/28/2021] [Revised: 02/13/2022] [Accepted: 02/14/2022] [Indexed: 06/14/2023]
Abstract
A pilot-scale anaerobic membrane bioreactor (AnMBR) integrated with a one-stage partial nitritation-anammox (PN/A) reactor was operated for the treatment of municipal wastewater (MWW) at seasonal temperatures of 15-25 °C. The removal efficiencies of COD and total nitrogen (TN) were always > 90% and > 75% respectively. The methanogenesis and PN/A were identified as the primary removal pathways of COD and TN, respectively, and were suppressed at low temperatures. With the temperature dropped from 25 °C to 20 °C to 15 °C, the methane-accounted COD decreased from 63.1% to 59.6% to 48.4%, and the PN/A-accounted TN decreased from 58.1% to 51.7% to 45.3%. The AnMBR and PN/A mutually complement each other in this combined process, as the AnMBR removed 8.5%-16.1% of TN by sludge entrainment and the PN/A reactor removed 2.6%-3.4% of COD by denitrification and aerobic oxidation. These results highlighted the strong feasibility of applying the AnMBR-PN/A process to the treatment of MWW in temperate climate.
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Affiliation(s)
- Chao Rong
- Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Zibin Luo
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Yan Guo
- Department of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Zhe Kong
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, PR China
| | - Jiang Wu
- Center for Material Cycles and Waste Management Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Yu Qin
- Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome, Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu-You Li
- Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan; Laboratory of Environmental Protection Engineering, Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan.
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Ishiguchi H, Yoshiga Y, Shimizu A, Ueyama T, Ono M, Fukuda M, Kato T, Fujii S, Hisaoka M, Uchida T, Omuro T, Okamura T, Kobayashi S, Yano M. The Differential Prognostic Impact of Long-Duration Atrial High-Rate Episodes Detected by Cardiac Implantable Electronic Devices between Patients with and without a History of Atrial Fibrillation. J Clin Med 2022; 11:jcm11061732. [PMID: 35330056 PMCID: PMC8954400 DOI: 10.3390/jcm11061732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 02/01/2023] Open
Abstract
Long-duration atrial high-rate episodes (AHREs) monitored using cardiac implantable electronic devices (CIEDs) can predict long-term major adverse cardiovascular events (MACEs). This study aimed to compare the impact of long-duration AHRE on MACE development between patients with and without a history of atrial fibrillation (AF). This single-center observational study included 132 CIED-implanted patients with AHREs detected via remote monitoring. The population was dichotomized into groups: with (n = 69) and without (n = 63) AF. In each group, cumulative incidences of MACEs comprising all-cause deaths, heart failure hospitalizations, strokes, and acute coronary syndromes were compared between patients with AHRE durations of ≥24 h and <24 h. Multivariate analysis was performed to identify predictors of MACEs among patients without AF. MACE incidence was significantly higher in patients with AHRE ≥24 h than in those with <24 h in the group without AF (92% vs. 30%, p = 0.005). MACE incidence did not significantly differ between AHRE ≥24 h and <24 h in the group with AF (54% vs. 26%, p = 0.44). After a multivariate adjustment, AHRE duration of ≥24 h emerged as the only independent predictor of MACEs among patients without AF (p = 0.03). In conclusion, a long-duration AHRE was prognostic in patients without a history of AF but not in patients with a history of AHREs.
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Affiliation(s)
- Hironori Ishiguchi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
- Correspondence: ; Tel.: +81-836-22-2248; Fax: +81-836-22-2246
| | - Yasuhiro Yoshiga
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Akihiko Shimizu
- Department of Cardiology, Ube-Kohsan Central Hospital, Ube 755-0151, Japan;
| | - Takeshi Ueyama
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Makoto Ono
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Masakazu Fukuda
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Takayoshi Kato
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Shohei Fujii
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Masahiro Hisaoka
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Tomoyuki Uchida
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Takuya Omuro
- Department of Medicine and Clinical Science, Faculty of Health Sciences, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan;
| | - Takayuki Okamura
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Division of Cardiology, Yamaguchi University Graduate School of Medicine, Ube 755-8508, Japan; (Y.Y.); (T.U.); (M.O.); (M.F.); (T.K.); (S.F.); (M.H.); (T.U.); (T.O.); (S.K.); (M.Y.)
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Ishiguchi H, Uchida M, Sadahiro H, Kimura S, Okamura T, Kobayashi S, Yano M. Acute Cardiac Tamponade Due to Microscopic Venous Invasion of Lung Adenocarcinoma. Circ J 2022; 86:1311. [DOI: 10.1253/circj.cj-22-0059] [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: 11/09/2022]
Affiliation(s)
- Hironori Ishiguchi
- Department of Cardiology, Yamaguchi University Graduate School of Medicine
| | - Masamune Uchida
- Department of Cardiology, Yamaguchi University Graduate School of Medicine
| | - Hirokazu Sadahiro
- Department of Neurosurgery, Yamaguchi University Graduate School of Medicine
| | - Sotai Kimura
- Department of Molecular Pathology, Yamaguchi University Graduate School of Medicine
| | - Takayuki Okamura
- Department of Cardiology, Yamaguchi University Graduate School of Medicine
| | - Shigeki Kobayashi
- Department of Cardiology, Yamaguchi University Graduate School of Medicine
| | - Masafumi Yano
- Department of Cardiology, Yamaguchi University Graduate School of Medicine
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Oka S, Yamaki T, Sasaki M, Ukai R, Takemura M, Yokoyama T, Kataoka-Sasaki Y, Onodera R, Ito YM, Kobayashi S, Kocsis JD, Iwadate Y, Honmou O. Intravenous infusion of auto serum-expanded autologous mesenchymal stem cells in chronic brain injury patients: a study protocol for a Phase II trial (Preprint). JMIR Res Protoc 2022; 11:e37898. [PMID: 35793128 PMCID: PMC9301565 DOI: 10.2196/37898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/31/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Background Objective Methods Results Conclusions Trial Registration International Registered Report Identifier (IRRID)
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Affiliation(s)
- Shinichi Oka
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Advanced Regenerative Therapeutics, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomohiro Yamaki
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Masanori Sasaki
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Advanced Regenerative Therapeutics, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Neurology, Yale University School of Medicine, New Haven, CT, United States
| | - Ryo Ukai
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Mitsuhiro Takemura
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takahiro Yokoyama
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuko Kataoka-Sasaki
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Advanced Regenerative Therapeutics, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Rie Onodera
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoichi M Ito
- Data Science Center, Institute of Health Science Innovation for Medical Care, Hokkaido University Hospital, Sapporo, Japan
| | - Shigeki Kobayashi
- Division of Neurosurgery, Rehabilitation Center for Traumatic Apallics Chiba, National Agency for Automotive Safety and Victims' Aid, Chiba, Japan
| | - Jeffery D Kocsis
- Department of Neurology, Yale University School of Medicine, New Haven, CT, United States
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT, United States
| | - Yasuo Iwadate
- Department of Neurological Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Osamu Honmou
- Department of Neural Regenerative Medicine, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Advanced Regenerative Therapeutics, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Neurology, Yale University School of Medicine, New Haven, CT, United States
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D'Souza N, Charlton J, Grayson J, Kobayashi S, Hutchison L, Hunt M, Simic M. Are biomechanics during gait associated with the structural disease onset and progression of lower limb osteoarthritis? A systematic review and meta-analysis. Osteoarthritis Cartilage 2022; 30:381-394. [PMID: 34757028 DOI: 10.1016/j.joca.2021.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 10/12/2021] [Accepted: 10/23/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate if gait biomechanics are associated with increased risk of structurally diagnosed disease onset or progression of lower limb osteoarthritis (OA). METHOD A systematic review of Medline and Embase was conducted from inception to July 2021. Two reviewers independently screened records, extracted data and assessed risk of bias. Included studies reported gait biomechanics at baseline, and either structural imaging or joint replacement occurrence in the lower limb at follow-up. The primary outcome was the Odds Ratio (OR) (95% confidence interval (CI)) of the association between biomechanics and structural OA outcomes with data pooled for meta-analysis. RESULTS Twenty-three studies reporting 25 different biomechanical metrics and 11 OA imaging outcomes were included (quality scores ranged 12-20/21). Twenty studies investigated knee OA progression; three studies investigated knee OA onset. Two studies investigated hip OA progression. 91% of studies reported a significant association between at least one biomechanical variable and OA onset or progression. There was an association between frontal plane biomechanics with medial tibiofemoral and hip OA progression and sagittal plane biomechanics with patellofemoral OA progression. Meta-analyses demonstrated increased odds of medial tibiofemoral OA progression with greater baseline peak knee adduction moment (KAM) (OR: 1.88 [95%CI: 1.08, 3.29]) and varus thrust presence (OR: 1.97 [95%CI: 1.32, 2.96]). CONCLUSION Evidence suggests that certain gait biomechanics are associated with an increased odds of OA onset and progression in the knee, and progression in the hip. REGISTRATION NUMBER PROSPERO CRD42019133920.
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Affiliation(s)
- N D'Souza
- The Discipline of Physiotherapy, Faculty of Medicine and Health, University of Sydney, Australia.
| | - J Charlton
- Graduate Programs in Rehabilitation Sciences, Faculty of Medicine, University of British Columbia, Canada; Motion Analysis and Biofeedback Laboratory, University of British Columbia, Canada.
| | - J Grayson
- The Discipline of Physiotherapy, Faculty of Medicine and Health, University of Sydney, Australia.
| | - S Kobayashi
- The Discipline of Physiotherapy, Faculty of Medicine and Health, University of Sydney, Australia.
| | - L Hutchison
- The Discipline of Physiotherapy, Faculty of Medicine and Health, University of Sydney, Australia.
| | - M Hunt
- Motion Analysis and Biofeedback Laboratory, University of British Columbia, Canada; Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Canada.
| | - M Simic
- The Discipline of Physiotherapy, Faculty of Medicine and Health, University of Sydney, Australia.
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Sato Y, Kojima T, Kawahara Y, Koguchi Y, Kobayashi S. Cognitive outcome in patients one month after mild to moderate aneurysmal subarachnoid hemorrhage: Focus on the location of the aneurysm. Interdisciplinary Neurosurgery 2022. [DOI: 10.1016/j.inat.2021.101377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Guo Y, Luo Z, Rong C, Wang T, Qin Y, Hanaoka T, Sakemi S, Ito M, Kobayashi S, Kobayashi M, Li YY. The first pilot-scale demonstration of the partial nitritation/anammox-hydroxyapatite process to treat the effluent of the anaerobic membrane bioreactor fed with the actual municipal wastewater. Sci Total Environ 2022; 807:151063. [PMID: 34673073 DOI: 10.1016/j.scitotenv.2021.151063] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/07/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Recently, it was reported that for synthetic low-strength wastewater, the excellent nitrogen removal rate (NRR) accompanied with phosphorus removal could be achieved through the partial nitritation/anammox (PNA)-hydroxyapatite (HAP) process. Thus, this research further investigated the performance of the pilot-scale PNA-HAP process treating the effluent of an anaerobic membrane bioreactor (AnMBR) fed with the actual municipal wastewater. The results showed that with the hydraulic retention time of 4.0 h, the influent ammonium concentration ranging from 36.0 to 41.0 mg/L, and the BOD5 ranging from 6.3 to 12.7 mg/L, the average NRR and the nitrogen removal efficiency was 0.13 kg/m3/d and 63.38%, respectively. The specific activity test of sludge confirmed that the PNA process was the main nitrogen metabolism pathway. The effluent nitrate and the BOD5 were almost zero, indicating the existence of denitrification activity in reactor. Given that the oxygenation condition, the heterotrophic organic matter oxidization activity also occurred in reactor. The sludge analysis confirmed the phosphate formation in sludge. Thus, in the reactor, four kinds of biological activities and chemical crystallization occurred harmoniously in sludge. From the mixed liquid volatile suspended solid of 2.4 g/L and the low distribution range of granule size, it was obvious that the sludge had a high dispersity. Based on the well settling ability of sludge during the operation, it was inferred that there was a close bond between biomass and HAP in sludge, which was helpful to enhance the settleability of sludge granule. Besides, the phosphorus-containing sludge was suitable as the fertilizer. In all, this study demonstrated that the PNA-HAP process is an ideal alternative treating the effluent of the AnMBR process in the municipal wastewater treatment.
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Affiliation(s)
- Yan Guo
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Zibin Luo
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Chao Rong
- Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Tianjie Wang
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Yu Qin
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Taira Hanaoka
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Shinichi Sakemi
- Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd., 1-2 Miyamae-Cho, Kawasaki-Ku, Kawasaki, Kanagawa 210-0012, Japan
| | - Masami Ito
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Shigeki Kobayashi
- Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome, Chiyoda-Ku, Tokyo 101-0021, Japan
| | - Masumi Kobayashi
- Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome, Shinagawa-Ku, Tokyo 141-0032, Japan
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
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Ishiguchi H, Yoshiga Y, Shimizu A, Ueyama T, Ono M, Fukuda M, Kato T, Fujii S, Hisaoka M, Uchida T, Omuro T, Shimokawa M, Okamura T, Kobayashi S, Yano M. Impact of Atrial Tachyarrhythmia Recurrence on the Development of Long-Term Adverse Clinical Events Following Catheter Ablation in Patients With Atrial Fibrillation With Systolic Impairment: A Single-Center Observational Study. J Am Heart Assoc 2022; 11:e023640. [PMID: 35112883 PMCID: PMC9245821 DOI: 10.1161/jaha.121.023640] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Catheter ablation can improve long‐term prognosis of patients with atrial fibrillation with systolic impairment. However, atrial tachyarrhythmia (ATA) recurrence increases during long‐term follow‐up. We aimed to investigate the impact of ATA recurrence on the development of long‐term adverse clinical events following catheter ablation for atrial fibrillation and to identify predictors for the development of adverse clinical events. Methods and Results This single‐center observational study included 75 patients with systolic impairment (left ventricular ejection fraction <50%) who underwent the first catheter ablation procedure for atrial fibrillation at our institution (median follow‐up period: 3.5 [range: 2.4–4.7] years). We compared the cumulative incidence of adverse clinical events (all‐cause death, heart failure hospitalization, stroke, or acute myocardial infarction) between the groups with and without ATA recurrence following the first and last procedures. Multivariable analyses were performed to identify predictors for developing adverse clinical events. Twenty‐one patients (28%) developed adverse clinical events at a median of 2.2 (range: 0.64–2.8) years following the first procedure. The proportion of freedom from adverse clinical events following the first procedure was significantly lower in the ATA recurrence group than in the nonrecurrence group (41% [n=40] versus 95% [n=35], P<0.0005); the proportion following the last procedure also showed a similar tendency (35% [n=26] versus 57% [n=49], P<0.0001). ATA recurrence emerged as an independent predictor for adverse clinical events following both procedures after multivariable adjustment. Conclusions ATA recurrence following catheter ablation procedure could predict adverse clinical events in patients with atrial fibrillation with systolic impairment.
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Affiliation(s)
- Hironori Ishiguchi
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Yasuhiro Yoshiga
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Akihiko Shimizu
- Department of Cardiology Ube-Kohsan Central Hospital Ube Japan
| | - Takeshi Ueyama
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Makoto Ono
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Masakazu Fukuda
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Takayoshi Kato
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Shohei Fujii
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Masahiro Hisaoka
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Tomoyuki Uchida
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Takuya Omuro
- Faculty of Health Sciences Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Mototsugu Shimokawa
- Department of Biostatistics Yamaguchi University Graduate School of Medicine Ube Japan
| | - Takayuki Okamura
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Shigeki Kobayashi
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
| | - Masafumi Yano
- Division of Cardiology Department of Medicine and Clinical Science Yamaguchi University Graduate School of Medicine Ube Japan
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Tanaka S, Yamamoto T, Mikawa M, Nawata J, Fujii S, Nakamura Y, Kato T, Fukuda M, Suetomi T, Uchinoumi H, Oda T, Okuda S, Okamura T, Kobayashi S, Yano. M. Stabilization of RyR2 maintains right ventricular function, reduces the development of ventricular arrhythmias, and improves prognosis in pulmonary hypertension. Heart Rhythm 2022; 19:986-997. [DOI: 10.1016/j.hrthm.2022.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 01/18/2022] [Accepted: 02/01/2022] [Indexed: 02/01/2023]
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Obayashi M, Kobayashi S, Nanno T, Hamada Y, Yano M. Relation between Oscillometric Measurement of Central Hemodynamics and Left Ventricular Hypertrophy in Hypertensive Patients. Pulse (Basel) 2022; 9:116-124. [PMID: 35083178 DOI: 10.1159/000520006] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/28/2021] [Indexed: 12/20/2022] Open
Abstract
Introduction The augmentation index (AIx) or central systolic blood pressure (SBP), measured by radial applanation tonometry, has been reported to be independently associated with left ventricular hypertrophy (LVH) in Japanese hypertensive patients. Cuff-based oscillometric measurement of the AIx using Mobil-O-Graph® showed a low or moderate agreement with the AIx measurement with other devices. Methods The AIx measured using the Mobil-O-Graph was validated against the tonometric measurements of the radial AIx measured using HEM-9000AI in 110 normotensive healthy individuals (age, 21-76 years; 50 men). We investigated the relationship between the central hemodynamics assessed using the Mobil-O-Graph and LVH in 100 hypertensive patients (age, 54-75 years; 48 men), presenting a wall thickness of ≥11 mm and ≥10 mm in men and women, respectively. Results Although the Mobil-O-Graph-measured central AIx showed no negative values, it correlated moderately with the HEM-9000AI-measured radial AIx (r = 0.602, p < 0.001) in the normotensive individuals. The hypertensive patients did not show a significant difference in the central SBP between the sexes, but the central AIx was lower in men than in women. The independent determinants influencing left ventricle (LV) mass index (LVMI) (R2 = 0.362; adjusted R2 = 0.329, p < 0.001) were heart rate (β = -0.568 ± 0.149, p < 0.001), central SBP (β = 0.290 ± 0.100, p = 0.005), and aortic root diameter (β = 1.355 ± 0.344, p = 0.001). Age (β = -0.025 ± 0.124, p = 0.841) and the central AIx (β = 0.120 ± 0.131, p = 0.361) were not independently associated with the LVMI. The area under the receiver operator characteristic curve to evaluate the diagnostic performance of the central AIx for the presence of LVH (LVMI >118 g/m2 in men or >108 g/m2 in women) was statistically significant in men (0.875, p < 0.001) but not in women (0.622, p = 0.132). In men, a central AIx of 28.06% had a sensitivity of 83.3% and specificity of 80.0% for detecting LVH. Conclusions AIx measurement in men provided useful prognostic information for the presence of LVH. Pulse-wave analysis assessed using the Mobil-O-Graph may be a valuable tool for detecting LVH in hypertensive patients.
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Affiliation(s)
- Masakazu Obayashi
- Department of Cardiovascular Medicine, Sanyo-Onoda City Hospital, Sanyo-Onoda, Japan
| | - Shigeki Kobayashi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takuma Nanno
- Department of Cardiovascular Medicine, Sanyo-Onoda City Hospital, Sanyo-Onoda, Japan
| | - Yoriomi Hamada
- Department of Cardiovascular Medicine, Sanyo-Onoda City Hospital, Sanyo-Onoda, Japan
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Yoshitomi R, Kobayashi S, Yano Y, Nakashima Y, Fujii S, Nanno T, Ishiguchi H, Fukuda M, Yoshiga Y, Okamura T, Suga K, Kawano R, Yano M. Enhanced oxidative stress and presence of ventricular aneurysm for risk prediction in cardiac sarcoidosis. Heart 2022; 108:429-437. [PMID: 35078868 PMCID: PMC8899481 DOI: 10.1136/heartjnl-2021-320244] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 12/13/2021] [Indexed: 12/27/2022] Open
Abstract
Objective Sudden cardiac death (SCD) is the major cause of death in cardiac sarcoidosis (CS). We aimed to identify the prognostic markers for sustained ventricular tachycardia (sVT) and SCD in patients with CS. Methods We performed a prospective observational cohort study for patients with CS diagnosed according to the Japanese or Heart Rhythm Society guidelines between June 2008 and March 2020 in our hospital. The primary endpoint was a composite of the first sVT and SCD. The levels of urinary 8-hydroxy-2′-deoxyguanosine (U-8-OHdG), a marker of oxidative DNA damage that reflects the inflammatory activity of CS, other biomarkers, and indices of cardiac function and renal function were measured on admission. Results Eighty-nine consecutive patients with CS were enrolled; 28 patients with no abnormal 18F-fluorodeoxyglucose (18F-FDG) accumulation in the heart were excluded and 61 patients with abnormal 18F-FDG accumulation were followed up for a median of 46 months (IQR: 20–84). During the follow-up period, 15 of 61 patients showed sVT (n=12) or SCD (n=3). A Cox proportional hazard model showed that U-8-OHdG concentration and presence of ventricular aneurysm (VA) were independent predictors of first sVT/SCD. The cut-off U-8-OHdG concentration for predicting first sVT/SCD was 14.9 ng/mg·Cr. Patients with U-8-OHdG concentration ≥14.9 ng/mg·Cr and VA showed a significantly increased risk of sVT/SCD. Conclusions U-8-OHdG and presence of VA were powerful predictors of first sVT/SCD in patients with CS, facilitating the stratification of cardiac events and providing relevant information about the substrates of ventricular tachycardia.
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Affiliation(s)
- Ryosuke Yoshitomi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shigeki Kobayashi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yasutake Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yusuke Nakashima
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shohei Fujii
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takuma Nanno
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Hironori Ishiguchi
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Masakazu Fukuda
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Yasuhiro Yoshiga
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Takayuki Okamura
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | | | - Reo Kawano
- Clinical Research Center in Hiroshima, Hiroshima University Hospital, Hiroshima, Japan
| | - Masafumi Yano
- Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Japan
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Ishiguchi H, Okamura T, Kobayashi S, Yano M. Alternating Bundle Branch Block With Paroxysmal Atrioventricular Block 22 Months After Valve-in-Valve Transcatheter Aortic Valve Replacement. Circ J 2021; 86:170. [PMID: 34483227 DOI: 10.1253/circj.cj-21-0600] [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: 11/09/2022]
Affiliation(s)
- Hironori Ishiguchi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine
| | - Takayuki Okamura
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine
| | - Shigeki Kobayashi
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine
| | - Masafumi Yano
- Division of Cardiology, Department of Medicine and Clinical Science, Yamaguchi University Graduate School of Medicine
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