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Amemiya K, Sakata K. Real-time observation of polarization dependence of soft x-ray absorption spectrum during chemical reaction under near-ambient pressure conditions. Rev Sci Instrum 2023; 94:123906. [PMID: 38147455 DOI: 10.1063/5.0170516] [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: 08/03/2023] [Accepted: 12/03/2023] [Indexed: 12/28/2023]
Abstract
The real-time observation of the polarization dependence of soft x-ray absorption spectra during chemical reactions is realized by combining the fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy technique with a 10 Hz switching between horizontal and vertical polarizations. The soft x-ray absorption spectra for both the horizontal and vertical polarizations are recorded every 100 ms with a time difference of 50 ms, which enables the real-time observation of changes in the anisotropic structure around the surface. The technique is applied to the oxidation reaction of a cobalt thin film under an air pressure of up to 25 Pa, and it is suggested that an anisotropic structure appears during the growth of the cobalt oxide species. By using the developed technique, it is expected that the changes in the anisotropic structures, such as molecular orientations, are observed during chemical reactions under near-ambient pressure conditions, which gives a deeper insight into the understanding of the reaction mechanism.
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Affiliation(s)
- K Amemiya
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
- Graduate Institute for Advanced Studies, SOKENDAI, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakata
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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2
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Hayashi K, Tanaka Y, Tsuda T, Nomura A, Fujino N, Furusho H, Sakai N, Iwata Y, Usui S, Sakata K, Kato T, Tada H, Kusayama T, Usuda K, Kawashiri MA, Passman RS, Wada T, Yamagishi M, Takamura M, Fujino N, Nohara A, Kawashiri MA, Hayashi K, Sakata K, Yoshimuta T, Konno T, Funada A, Tada H, Nakanishi C, Hodatsu A, Mori M, Tsuda T, Teramoto R, Nagata Y, Nomura A, Shimojima M, Yoshida S, Yoshida T, Hachiya S, Tamura Y, Kashihara Y, Kobayashi T, Shibayama J, Inaba S, Matsubara T, Yasuda T, Miwa K, Inoue M, Fujita T, Yakuta Y, Aburao T, Matsui T, Higashi K, Koga T, Hikishima K, Namura M, Horita Y, Ikeda M, Terai H, Gamou T, Tama N, Kimura R, Tsujimoto D, Nakahashi T, Ueda K, Ino H, Higashikata T, Kaneda T, Takata M, Yamamoto R, Yoshikawa T, Ohira M, Suematsu T, Tagawa S, Inoue T, Okada H, Kita Y, Fujita C, Ukawa N, Inoguchi Y, Ito Y, Araki T, Oe K, Minamoto M, Yokawa J, Tanaka Y, Mori K, Taguchi T, Kaku B, Katsuda S, Hirase H, Haraki T, Fujioka K, Terada K, Ichise T, Maekawa N, Higashi M, Okeie K, Kiyama M, Ota M, Todo Y, Aoyama T, Yamaguchi M, Noji Y, Mabuchi T, Yagi M, Niwa S, Takashima Y, Murai K, Nishikawa T, Mizuno S, Ohsato K, Misawa K, Kokado H, Michishita I, Iwaki T, Nozue T, Katoh H, Nakashima K, Ito S, Yamagishi M. Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [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: 12/14/2022]
Affiliation(s)
- Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroshi Furusho
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Cardiology, Ishikawa Prefectural Central Hospital, 2-1, Kuratsuki-higashi, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Rod S Passman
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Masakazu Yamagishi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Osaka University of Human Sciences, Settsu, Osaka, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Kubo T, Yoshii S, Yamano HO, Saito M, Sakata K, Sugita S, Hasegawa T, Horiuchi H, Nakase H. Jejunal Angiodysplasia in an Elderly Patient with Aortic Stenosis: Significance of Von Willebrand Factor as an Etiologic Factor. Intern Med 2022. [PMID: 36418102 PMCID: PMC10400398 DOI: 10.2169/internalmedicine.0888-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Heyde's syndrome is a disease in which patients with aortic stenosis (AS) bleed from angiodysplasia. An 80-year-old woman with a history of severe AS was referred to our hospital with melena and anemia. The patient underwent jejunal resection after repeated blood transfusions. A pathological examination revealed angiodysplasia, and the patient's plasma lacked high-molecular-weight von Willebrand factor (VWF) multimers, leading to the diagnosis of Heyde's syndrome. The patient underwent transcatheter aortic valve implantation (TAVI) one year after the diagnosis, and the VWF index recovered. This is a valuable case in which the pathological analysis of angiodysplasia associated with Heyde's syndrome was possible.
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Affiliation(s)
- Toshiyuki Kubo
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Japan
- Department of Gastroenterology and Hepatology, Sapporo Shirakaba-dai Hospital, Japan
| | - Shinji Yoshii
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Japan
| | - Hiro-O Yamano
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Japan
| | - Masato Saito
- Department of Radiology Oncology, Sapporo Medical University School of Medicine, Japan
| | - Koichi Sakata
- Department of Radiology Oncology, Sapporo Medical University School of Medicine, Japan
| | - Shintaro Sugita
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Japan
| | - Tadashi Hasegawa
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Japan
| | - Hisanori Horiuchi
- Department of Molecular and Cellular Biology, Institute of Development, Aging and Cancer, Tohoku University, Japan
| | - Hiroshi Nakase
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine, Japan
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Morita K, Nogawa K, Watanabe Y, Sakuma S, Sakata K, Ito K, Kumeda C, Suwazono Y. Possible Association between Physical and Cognitive Function and Stumbling and Falling in Elderly Workers. Int J Environ Res Public Health 2022; 19:13826. [PMID: 36360706 PMCID: PMC9654072 DOI: 10.3390/ijerph192113826] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
The aim of this paper is to examine the association between physical and cognitive function and stumbling and falling in elderly workers by conducting work-related questionnaire surveys and physical and cognitive function measurements. A total of 611 men and 121 women aged 40-69 years who participated in physical function measurements between June 2017 and June 2021 were included in the study. The general physical function measurements of upper and lower limb muscle strength, dynamic and static balance, and agility and cognitive function included grip strength, Repeated Rise Test, Trail Making test (TMT), and Three-Meter Time Up Go Test (TUG). We also asked the men and women about their experience of falling and stumbling. Logistic regression analysis showed significant odds ratios (OR) for the associations between stumbling in men and age (OR: 1.98), mental burden (OR: 2.44), frequency of field work (OR: 1.74), seated stepping test count (OR: 0.95), and TMTB time (OR: 0.99). Significant ORs were found between falling in men and age (OR: 2.55), mental burden (OR: 2.40), exercise habits (OR: 2.55), and smoking (OR: 2.00). Significant ORs were found between stumbling in women and d_TUG (OR: 1.59) and mental burden (OR: 6.42). The study suggests that there may be an association between cognitive and physical decline and stumbling and falling in elderly workers.
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Cui S, Hayashi K, Usuda K, Usui S, Sakata K, Kawashiri M, Kusayama T, Tsuda T, Fujino N, Kato T, Takamura M. Utility of in vivo zebrafish cardiac assay to predict the functional impact of KCNQ1 variants. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2969] [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
Genetic testing for inherited arrhythmias and discriminating pathogenic from benign variants are integral for the gene-based medicine. However, the high throughput in vivo functional analysis for the rare variants of the KCNQ1 potassium channel is scarce.
Purpose
We tested the utility of the in vivo zebrafish cardiac assay for determining the pathogenicity of the KCNQ1 variants identified in patients with long QT syndrome (LQTS) and atrial fibrillation (AF).
Methods
We generated a knock-out zebrafish with CRISPR-mediated insertions or deletions of the KCNQ1 homolog in zebrafish (kcnq1+/+). To test the utility of the cardiac assay, we used five KCNQ1 variants identified in patients with LQTS or familial AF. Human wild-type or mutant KCNQ1 cRNA (Q1) was co-injected with human KCNE1 cRNA (E1) into the F3 generation embryos with homozygous deletions. We dissected the hearts from the thorax at 72 hour-post-fertilization and measured transmembrane potential in zebrafish heart using the disrupted patch technique. Action potential duration was calculated as the time interval between the peak maximum upstroke velocity and 90% of repolarization (APD90). We compared the APD90s with patients' clinical phenotype and IKs density measured by patch-clamp technique in heterologous system.
Results
The mean APD90 of embryos with kcnq1del/del was 279±48 ms, which was restored by injecting Q1 WT and E1 (159±29 ms) to that with kcnq1+/+ (167±28 ms). We tested if the mean APD90 of embryos with kcnq1del/del was restored (shortened) by injecting the KCNQ1 variants. First we tested the dominant negative variant p.S277L and the trafficking deficient variant p.T587M. Patients with these variants showed significant prolonged QT intervals, and patch clamp study showed both variants caused the non-functional channels. Zebrafish cardiac assay showed the mean APD90 of embryos with kcnq1del/del+ Q1 S277L+E1 or Q1 T587M+E1 was significantly longer than that with kcnq1del/del+Q1 WT+E1 (Table). Next we tested in-frame variant c.1472_1473 ins GGACCT, which was identified from a patient with AF and normal QT interval. Patch clamp study showed the current density of the mutant KCNQ1 channel with KCNE1 was comparable to that of wild-type KCNQ1 channel with KCNE1. Zebrafish assay showed the mean APD90 of embryos with kcnq1del/del shortened by injecting Q1 insACCTGG +E1 (Table). Finally we tested a missense variant p.R451Q, which was identified from a patient with LQTS. Patch clamp study showed the currents in the cells transfected with R451Q+KCNE1 were similar to those with WT+KCNE1. Zebrafish assay showed the mean APD90 of embryos with kcnq1del/del+Q1 R451Q+E1 was longer than that with kcnq1del/del+Q1 WT+E1 (Table).
Conclusions
Functional analysis of in vivo zebrafish cardiac assay might be useful for determining the pathogenicity of rare variants in patients with LQTS.
Funding Acknowledgement
Type of funding sources: Public Institution(s). Main funding source(s): The Grant-in-Aid for Scientific Research (C)
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Affiliation(s)
- S Cui
- Kanazawa University , Kanazawa , Japan
| | - K Hayashi
- Kanazawa University , Kanazawa , Japan
| | - K Usuda
- Kanazawa University , Kanazawa , Japan
| | - S Usui
- Kanazawa University , Kanazawa , Japan
| | - K Sakata
- Kanazawa University , Kanazawa , Japan
| | | | | | - T Tsuda
- Kanazawa University , Kanazawa , Japan
| | - N Fujino
- Kanazawa University , Kanazawa , Japan
| | - T Kato
- Kanazawa University , Kanazawa , Japan
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Kurokawa S, Kamei J, Sakata K, Sugihara T, Fujisaki A, Ando S, Takayama T, Fujimura T. The cutoff value of transitional zone index predicting the efficacy of dutasteride on subjective symptoms in patients with benign prostate hyperplasia. Low Urin Tract Symptoms 2022; 14:261-266. [PMID: 35170856 DOI: 10.1111/luts.12431] [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: 11/17/2021] [Revised: 01/17/2022] [Accepted: 02/02/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES We investigated the efficacy of dutasteride add-on therapy to α-1 adrenoceptor antagonists in patients with benign prostate hyperplasia (BPH) in relation to the transitional zone index (TZI) and evaluated the cutoff value of TZI that predicted improvements of subjective symptoms at 6 months. METHODS Male BPH patients with prostate volume (PV) ≥ 30 mL receiving dutasteride 0.5 mg/d for 6 months as add-on therapy along with α-1 adrenoceptor antagonists were enrolled. PV, transitional zone volume (TZV), TZI, International Prostate Symptom Score (IPSS), and uroflowmetry parameters before and at 6 months with dutasteride add-on treatment were evaluated. RESULTS Eighty-three patients were included. The changes of total IPSS, IPSS voiding subscore, IPSS quality of life score, and voided volume were significantly correlated with TZI. Among baseline parameters, TZV and TZI were significantly associated with the changes of total IPSS in univariate analysis, and only TZI remained as an independent predictive factor for improving total IPSS in multivariate analysis (odds ratio -8.3, P = .048). The cutoff point of TZI for predicting an improvement of the total IPSS by 6 points or more was 0.67 (area under the curve 0.71, sensitivity 0.62, specificity 0.79). CONCLUSIONS A higher TZI was significantly associated with improvement of subjective symptoms but not uroflowmetric findings for BPH patients with 6 months of dutasteride add-on therapy along with α-1 adrenoceptor antagonists, and the predictive value of TZI for effective dutasteride add-on therapy was higher than 0.67. BPH patients using α-1 adrenoceptor antagonists with a TZI higher than 0.67 can be good candidates for add-on dutasteride therapy.
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Affiliation(s)
- Shinsuke Kurokawa
- Department of Urology, Sano Kosei General Hospital, Tochigi, Japan.,Department of Urology, Jichi Medical University, Tochigi, Japan
| | - Jun Kamei
- Department of Urology, Jichi Medical University, Tochigi, Japan
| | - Koichi Sakata
- Department of Urology, Imaichi Hospital, Tochigi, Japan
| | - Toru Sugihara
- Department of Urology, Jichi Medical University, Tochigi, Japan
| | - Akira Fujisaki
- Department of Urology, Jichi Medical University, Tochigi, Japan
| | - Satoshi Ando
- Department of Urology, Jichi Medical University, Tochigi, Japan
| | - Tatsuya Takayama
- Department of Urology, Jichi Medical University, Tochigi, Japan.,Department of Urology, Haga Red Cross Hospital, Tochigi, Japan
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Goten C, Usui S, Okada H, Inoue O, Takashima S, Sakata K, Kawashiri M, Takamura M. Progression of liver fibrosis in pulmonary arterial hypertension. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pulmonary arterial hypertension (PAH) causes congestive liver due to right heart failure. There are few cases of PAH that lead to liver cirrhosis, and little attention is paid to liver function in PAH patients. However, it is certain that long-term congestion due to right heart failure in PAH causes a gradual exacerbation of liver dysfunction and affects metabolic function.
Purpose
The purpose of this study is to investigate liver fibrosis associated with the severity and prognosis of PAH.
Methods
This retrospective observational study was included 57 PAH patients and 22 control subjects. PAH patients were assigned to three risk variables according to the simplified risk stratification proposed at the 6thWSPH 2018 after measuring hemodynamic parameters using right heart catheterization, WHO functional class, 6- minutes walking distance (6MWD), and BNP plasma levels. The Fibrosis-4 (FIB4)-index, a liver fibrosis marker, was calculated using the formula: FIB-4 = Age (years) × AST (U/L) / [PLT (109/L) × ALT1/2 (U/L)], and assessed for association with severity of PAH. PAH patients were followed up for 12 years to assess the occurrence of major adverse event, such as death or lung transplantation.
Next, adult 8-week-old C57BL/6 mice were exposed to chronic hypoxia (10% O2) or normoxia for 6 weeks. Then, mice were anesthetized and performed right heart catheterization. Liver tissue was collected for histological assessment by Hematoxylin and eosin and Azan staining, and evaluated RNA expression involved in liver fibrosis by real-time PCR.
Results
The levels of FIB4-index in intermediate and high risk groups of PAH patients had significantly increased compared to those in control group. In PAH patients, FIB4-index was not obviously correlated with hemodynamic parameters, BNP, or 6MWD. Major adverse events occurred in 18 PAH patients (32%): death in 18 (100%) and lung transplant in none (0%). Kaplan-Meier curves for PAH patients with and without major adverse events were constructed based on a cut-off frequency of 2.001 for FIB4-index. During the 12-years follow-up period, major-event-free survival was significantly better in PAH patients with FIB4-index <2.001 than in patients with FIB4-index >2.001 (hazard ratio, 3.3; P=0.038).
In a PAH model mice, hemodynamic parameters showed that chronic hypoxia significantly increased the right ventricular systolic pressure. In histological analysis, there was no significantly difference in liver fibrosis in hypoxia or normoxia group. However, the RNA expression such as αSMA and TGFβ1 associated with liver fibrosis in PAH model mice was increased compared to control mice.
Conclusion
This study showed that the liver fibrosis gradually progressed subsurfacely with severity of PAH. Even the slight liver dysfunction may affect metabolism and cause exacerbation of PAH, so it might be necessary to pay attention to liver fibrosis as one of the risk factors of PAH.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- C Goten
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - S Usui
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - H Okada
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - O Inoue
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - S Takashima
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
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Sugimoto H, Murai H, Hirai T, Hamaoka T, Mukai Y, Tokuhisa H, Usui S, Sakata K, Kawajiri M, Takamura M. Different contribution of sympathetic nerve activity to arterial velocity pulse index in hypertensive patients with and without diastolic dysfunction. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Left ventricular diastolic dysfunction (LVDD) is the main cause of heart failure with preserved ejection fraction (HFpEF). LVDD is related not only to arterial stiffness but also sympathetic nerve activity (SNA). Recent study demonstrated that increased muscle sympathetic nerve activity (MSNA) may be one of contributing factor for arterial stiffness. In clinical practice, Cardio-ankle vascular index (CAVI) provides a reproducible index of arterial stiffness, independent of blood pressure (BP). Recently, Arterial Velocity pulse Index (AVI), which is an index of arterial reflected waves, have been proposed as new index of arterial stiffness. We reported that AVI was associated with MSNA in hypertensive (HT) patients. However, it is still uncertain the effect of LVDD on the association between AVI and SNA in HT patients. Thus, we tested the hypothesis that AVI would be increased and related to MSNA in HT patients with LVDD.
Methods
Patients with essential HT subjects were included in this study. HT was diagnosed as systolic blood pressure (SBP) ≥140mmHg or diastolic blood pressure (DBP) ≥90mmHg. Patients with secondary HT was excluded. AVI was measured from left upper arm by NAS-1000 (Nihon Koden, Japan). CAVI was measured by VaSera VS-1500A (Fukuda Denshi, Japan). Transthoracic echocardiography was performed by trained sonographers. SNA was evaluated by direct recording of MSNA from peroneal nerves.
Results
25 HT patients were included (age 63±14 years, Male/Female 9/16). They were divided into two groups according to E/e' (no LVDD group, E/e' ≤9, N=12; LVDD group, E/e' >9, N=13). There were no significant differences between no LVDD and LVDD groups in age (63±9 vs 69±9 years p=0.205), body mass index (23±3 vs 24±4 p=0.355), BP (SBP 139±16 vs 144±20mmHg p=0.524, DBP 87±15 vs 78±14mmHg p=0.167). LV Ejection Fraction (EF) and Stroke Volume (SV) did not differ between two groups (EF 66±7 vs 69±6% p=0.471, SV 58±7 vs 62±14ml p=0.599). MSNA had tendency to increase in LVDD group compared to no LVDD group (MSNA 53±10 vs 44±12 bursts/100 heartbeats, p=0.052). Contrary to our hypothesis, AVI and CAVI did not differ between two groups (AVI 27±7 vs 29±7 p=0.398, CAVI 8.7±1.4 vs 8.6±1.4 p=0.894). However, a significant correlation was seen between AVI and MSNA in no LVDD group (r=0.57, p<0.05), but no correlation in LVDD group. There is no correlation between CAVI and MSNA in no LVDD and LVDD group. Significant relationship was observed between AVI and CAVI in LVDD group (r=0.61, p<0.05), but no relationship in no LVDD group.
Conclusion
AVI was significantly associated with MSNA in HT patients without LVDD, but not with LVDD. CAVI was related to AVI in HT patients with LVDD, but not without LVDD. MSNA was slightly increased in HT patients with LVDD compared to without LVDD. These results indicate that augmented SNA could contribute to the increase in arterial stiffness in HT patients without LVDD, however, this contribution might be attenuated in HT patients with LVDD.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - H Murai
- Kanazawa University, Kanazawa, Japan
| | - T Hirai
- Kanazawa University, Kanazawa, Japan
| | - T Hamaoka
- Kanazawa University, Kanazawa, Japan
| | - Y Mukai
- Kanazawa University, Kanazawa, Japan
| | | | - S Usui
- Kanazawa University, Kanazawa, Japan
| | - K Sakata
- Kanazawa University, Kanazawa, Japan
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Usuda K, Hayashi K, Ishikawa T, Aizawa Y, Kato T, Kusayama T, Tsuda T, Usui S, Sakata K, Kawashiri M, Mishima H, Yoshiura K, Makita N, Takamura M. Novel variant of the glycerol-3-phosphate dehydrogenase-1 Like (GPD1-L) gene in Japanese Brugada syndrome patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The incidence of Brugada syndrome (BrS) varies among racial groups. Several studies reported Glycerol-3-Phosphate Dehydrogenase 1-Like (GPD1-L) gene is associated with BrS. However, most of these studies were reported from Western countries, so the evidence about GPD1-L mutation is limited especially among Asian BrS patients. This study aimed to search for rare variants in GPD1-L among Japanese BrS patients and to investigate the pathogenicity.
Method
We performed whole-exome sequencing for patients with Brugada type 1 ECG pattern from Japanese multicenter BrS cohort consisting of SCN5A-negative BrS probands (n=288) and controls (n=372). We conducted patch-clamp study in human embryonic kidney (HEK) 293 cells cotransfected with the wild-type sodium channel (SCN5A) and wild-type or mutant GPD1-L expression plasmid.
Results
We identified a rare variant in GPD1-L, p.D262N (c.784g>a) in 2 of 288 BrS probands, which was not identified in 372 controls. The minor allele frequency of the variant is 0.0014% in the Genome Aggregation Database. One proband was a 49-year-old man and the other was 34-year-old man who both developed a ventricular fibrillation. ECGs of both probands showed Brugada Type 1 pattern after administration of the pilsicainide. In functional study, coexpression of D262N GPD1-L with SCN5A in HEK293 cells significantly reduced inward sodium currents compared with wild-type GPD1-L. Additionally, inward sodium currents with D262N were similar to those with A280V GPD1-L, which was associated with BrS in previous reports (Figure). Also, several pathogenicity prediction programs, such as SIFT (score: 0.031) and PolyPhen2 (score: 0.937) predicted deleterious effects of GPD1-L D262N.
Conclusion
We identified a rare variant in GPD1-L at the rate of 0.7% in Japanese BrS patients without SCN5A mutations. GPD1-L, p.D262N reduces inward sodium currents and may be a novel susceptible variant for BrS in the Japanese population.
Funding Acknowledgement
Type of funding sources: None. Figure 1. Current–voltage curve
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Affiliation(s)
- K Usuda
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - K Hayashi
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - T Ishikawa
- National Cerebral and Cardiovascular Center Hospital, Omics Research Center, Osaka, Japan
| | - Y Aizawa
- International University of Health and Welfare, Department of Cardiovascular Medicine, Tochigi, Japan
| | - T Kato
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - T Kusayama
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - T Tsuda
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - S Usui
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
| | - H Mishima
- Nagasaki University, Department of Human Genetics, Nagasaki, Japan
| | - K Yoshiura
- Nagasaki University, Department of Human Genetics, Nagasaki, Japan
| | - N Makita
- National Cerebral and Cardiovascular Center Hospital, Omics Research Center, Osaka, Japan
| | - M Takamura
- Kanazawa University Graduate School of Medicine, Department of Cardiovascular Medicine, Kanazawa, Japan
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10
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Sugimoto H, Murai H, Hirai T, Hamaoka T, Mukai Y, Tokuhisa H, Usui S, Sakata K, Kawajiri M, Takamura M. Age differences in the association between arterial velocity pulse index and muscle sympathetic nerve activity in hypertensive patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Increased arterial stiffness characterize by aging. It is reported that age-related increases in muscle sympathetic nerve activity (MSNA) may be one of contributing factor for arterial stiffness. Arterial reflected wave was composed of SNA and aging. Increased arterial reflected wave partly plays an important role in blood pressure. Recently, we reported that arterial velocity pulse index (AVI), a novel index of arterial reflected waves, was associated with MSNA in hypertensive patients. It is still uncertain the effect of age on the association between AVI and SNA in hypertensive patients.
Method
Patients with essential HT and matched non-hypertensive control subjects were included in this study. HT was diagnosed as systolic blood pressure (SBP) ≥140 mmHg or diastolic blood pressure (DBP) ≥90 mmHg. AVI was measured from left upper arm by NAS-1000. SNA was evaluated by direct recording of muscle sympathetic nerve activity (MSNA) from peroneal nerves.
Results
45 HT patients and 46 control subjects were included. Age, SBP and DBP were significantly increased in HT group compared to control (Age 63±14 vs 42±16 years, p<0.001; SBP 144±16 vs 115±9 mmHg, p<0.001; DBP 80±14 vs 67±9 mmHg, p<0.001). MSNA and AVI were significantly increased in HT group compared to control (MSNA 34±10 vs 25±8 bursts/min, p<0.05; AVI 28±9 vs 17±5, p<0.05). AVI was significantly correlated with MSNA, age, and SBP in HT group. HT group was divided into two groups according to their age (group 1, age ≤63 N=21, group 2, age ≥64 N=26). AVI in group 1 showed correlation with MSNA (r=0.59, p<0.05), but no correlation was seen in group 2. However excluded SBP>160 mmHg subjects in group 2, significant correlation was clarified between AVI and MSNA (r=0.62, p<0.05).
Conclusion
The relationship between AVI and MSNA in HT patients is preserved regardless of aging, however, high blood pressure over 160mmHg might obscure its correlation. These results indicate that AVI is useful to estimate sympathetic nerve activity in high aging HT patient treated <160 blood pressure.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - H Murai
- Kanazawa University, Kanazawa, Japan
| | - T Hirai
- Kanazawa University, Kanazawa, Japan
| | - T Hamaoka
- Kanazawa University, Kanazawa, Japan
| | - Y Mukai
- Kanazawa University, Kanazawa, Japan
| | | | - S Usui
- Kanazawa University, Kanazawa, Japan
| | - K Sakata
- Kanazawa University, Kanazawa, Japan
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11
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Yamagami K, Nomura A, Kometani M, Shimojima M, Sakata K, Usui S, Furukawa K, Takamura M, Okajima M, Watanabe K, Yoneda T. Early detection of exacerbation of the severe acute respiratory syndrome coronavirus 2 infection using Fitbit (DEXTERITY pilot study). Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Some patients with coronavirus disease 2019 (COVID-19) experienced sudden death because of sudden symptom deterioration. Thus, an alarm system that could detect early signs of COVID-19 exacerbation beforehand, to prevent serious illness or death of patients while receiving outpatient treatment at home or in hotels is necessary. Here, we tested whether estimated oxygen variations (EOV), a relative physiological scale that represents users' blood oxygen saturation level during sleep measured by Fitbit, predicted COVID-19 symptom exacerbation. Study period was from August to November 2020. We enrolled 23 COVID-19 patients diagnosed by SARS-CoV-2 polymerase chain reaction-positive (mean age ± standard deviation, 50.9±20 years; 70% female), let each patient wore the Fitbit for 30 days; COVID-19 symptoms were exacerbated in 6 (26%). High EOV signal (a patient's oxygen level exhibits significant dip and recovery within the index period) had 80% sensitivity before symptom exacerbations, whereas resting heart rate signal only had 50% sensitivity. Coincidental obstructive sleep apnea syndrome confirmed by polysomnography was detected in a patient by consistently high EOV signals. This pilot study successfully detected early COVID-19 symptoms exacerbation by measuring EOV and may help to identify early signs of COVID-19 exacerbation.
Funding Acknowledgement
Type of funding sources: Private company. Main funding source(s): The investigational device used in this study, Fitbit Charge 3, was provided by Fitbit Japan. Summary of high EOV signals and eventsThe clinical course of COVID-19
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Affiliation(s)
- K Yamagami
- Kanazawa University Hospital, Kanazawa, Japan
| | - A Nomura
- Kanazawa University Hospital, Kanazawa, Japan
| | - M Kometani
- Kanazawa University Graduate School of Medicine, Department of Health Promotion and Medicine of the Future, Kanazawa, Japan
| | - M Shimojima
- Kanazawa University Hospital, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Hospital, Kanazawa, Japan
| | - S Usui
- Kanazawa University Hospital, Kanazawa, Japan
| | - K Furukawa
- Health Care Center, Japan Advanced Institute of Science and Technology, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Hospital, Kanazawa, Japan
| | - M Okajima
- Kanazawa University Hospital, Intensive Care Unit, Kanazawa, Japan
| | - K Watanabe
- JCHO Kanazawa Hospital, Kaznazawa, Japan
| | - T Yoneda
- Kanazawa University Graduate School of Medicine, Department of Health Promotion and Medicine of the Future, Kanazawa, Japan
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12
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Usuda K, Kato T, Tada H, Tsuda T, Takeuchi K, Niwa S, Usui S, Sakata K, Hayashi K, Furusho H, Kawashiri M, Takamura M, Nagashima K, Okumura Y. Recurrence of atrial fibrillation after catheter ablation is associated with major adverse cardiac and cerebrovascular events: insights from AF frontier ablation registry. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Recent observational studies have suggested that catheter ablation for atrial fibrillation (AF) is significantly associated with reduced risk for stroke, cardiovascular events and all-cause death. However, little is known whether late recurrence of AF after catheter ablation is associated with worse clinical outcomes.
Purpose
We aimed to clarify whether late recurrence of AF after catheter ablation is associated with major adverse cardiac and cerebrovascular events (MACCE).
Methods
We retrospectively investigated 2,737 participants (74.4% men, mean age 63.4±10.3 years, 62.7% paroxysmal AF) who received first catheter ablation for AF and completed follow-up more than 3 months after the procedure from AF Frontier Ablation Registry, a multicenter cohort study in Japan. We evaluated an association between late recurrence of AF after catheter ablation and first MACCE in cox-regression hazard models adjusted for known risk factors. MACCE were defined as stroke/transient ischemic attack (TIA), cardiovascular events or all-cause death. Late recurrence was defined as AF relapse more than 3 months after the procedure.
Results
During a mean follow-up period of 25.2 months, 2,070 patients (75.6%) were free from AF after catheter ablation and 122 patients (4.5%) had MACCE (ischemic stroke 18 [14.8%], hemorrhagic stroke 16 [13.1%], TIA 7 [5.7%], hospitalization for heart failure 19 [15.6%], acute coronary syndrome 19 [15.6%], hospitalization for other cardiovascular events 24 [20%] and all-cause death 19 [15.6%]). The MACCE occurred significantly more frequently in the recurrence group than in non-recurrence group (7.5% vs. 3.5%; hazard ratio [HR] 1.85; 95% confidence interval [CI] 1.28–2.65; P=0.001) (Figure). Multivariate analysis revealed that baseline age (HR 1.05; 95% CI 1.03–1.08; P<0.001), heart failure (HR 1.76; 95% CI 1.17–2.66; P=0.007), old myocardial infarction (HR 4.49; 95% CI 2.59–7.81; P<0.001), non-ischemic cardiomyopathy (HR 2.56; 95% CI 1.47–4.46; P=0.001), left atrial diameter (HR 1.22 per 5-mm increase; 95% CI, 1.06–1.41; P=0.006) and recurrence of AF (HR 1.69; 95% CI 1.17–2.44; P=0.005) were independently associated with the incidence of MACCE after catheter ablation.
Conclusion
In the Japanese multicenter cohort of AF ablation, late recurrence of AF was independently associated with increased MACCE, suggesting the significance of sinus rhythm maintenance by catheter ablation.
Kaplan-Meier curves for MACCE
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Usuda
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - T Kato
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - H Tada
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - T Tsuda
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - K Takeuchi
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - S Niwa
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - S Usui
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - K Hayashi
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - H Furusho
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Hospital, Department of Cardiology, Kanazawa, Japan
| | - K Nagashima
- Nihon University Hospital, Department of Cardiovascular Medicine, Tokyo, Japan
| | - Y Okumura
- Nihon University Hospital, Department of Cardiovascular Medicine, Tokyo, Japan
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13
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Goten C, Usui S, Inoue O, Okada H, Takashima S, Sakata K, Kawashiri M, Takamura M. Nerve growth factor receptor is involved in maintaining homeostasis of pulmonary arterial hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Pulmonary arterial hypertension (PAH), characterized by vascular remodeling, is still disease with poor prognosis although many pulmonary vasodilators have been developed, and new mechanism of treatment for PAH is desired. Nerve growth factor receptor (Ngfr) is known to relate to inflammatory reaction and repair process in the damaged tissue. We have reported that Ngfr is associated to vascular remodeling in patients with acute coronary syndrome. However, it is unclear how Ngfr is involved in the pathogenesis of PAH.
Purpose
In this study, we investigated whether Ngfr relate to pathophysiology in PAH.
Methods
We estimated the frequency of Ngfr positive cells (% Ngfr+) in peripheral blood mononuclear cells obtained from PAH and non-PAH patients using flowcytometric analysis. In PAH patients, the hemodynamic parameters such as mean pulmonary arterial pressure (mPAP), pulmonary vascular resistance (PVR), and cardiac index (CI) were obtained by right heart catheterization, and evaluated for correlation with the % Ngfr+.
Next, adult 8-week-old C57BL/6 (WT) mice and Ngfr knock out (KO) mice were exposed to chronic hypoxia (10% O2) or normoxia for 6 weeks. Then, mice were anesthetized and performed echocardiography and right heart catheterization. Then, mice were exsanguinated and blood sample was collected to evaluate the % Ngfr+ by flow cytometry. Right ventricular weight was measured and lung tissue was also collected for histological assessment and molecular pathway profiling.
Results
PAH (n=24) patients and non-PAH patients (n=17) were enrolled. The % Ngfr+ was significantly higher in PAH patients than that in non-PAH patients (0.056% versus 0.019%, p<0.0001). In PAH patients, the % Ngfr+ was correlated with severity of hemodynamic parameters such as mPAP (R=0.64 p<0.001), PVR (R=0.62 p<0.005), and CI (R=−0.48 p<0.05).
In WT mice, chronic hypoxia significantly increased the right ventricular systolic pressure and induced vascular medial thickness and fibrosis around the pulmonary artery. Flow cytometry analysis revealed that the % Ngfr+ was significantly increased in the hypoxia compared to that in the normoxia. Under hypoxic conditions, the right ventricular systolic pressure was significantly increased in Ngfr KO mice compared to that in WT mice. In histological analysis, hypoxia-induced peripheral vascular fibrosis and medial thickness was more severe in Ngfr KO than that in WT mice.
Conclusion
Circulating Ngfr-positive cells are associated with severity of PAH in patients. In the hypoxia-induced PH model, gene deletion of Ngfr shows the progression of the pathogenesis of PAH. These results suggest that circulating Ngfr-positive cells have an important role in the pathogenesis of PAH and may be a novel target for PAH therapy.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- C Goten
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - S Usui
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - O Inoue
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - H Okada
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - S Takashima
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Hospital, Cardiovascular Medicine, Kanazawa, Japan
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14
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Sakata K, Tanaka T, Yamashita S, Yamashiro K. The outcome of ablation for non-paroxysmal atrial fibrillation targeting spatiotemporal electrogram dispersion compared with ganglionated plexi ablation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Although catheter ablation targeting ganglionated plexi (GP) playing an important role in formation of triggers and substrates of atrial fibrillation (AF) has been reported as one of the effective ablation strategies in non-paroxysmal AF (non-PAF) patients, its effectiveness varies among the study groups. More recently, ablation targeting spatiotemporal electrogram dispersion (STED) areas, assumed to contain AF drivers in forms of rotational activation is proposed. However, the optimal ablation strategy for non-PAF is still controversial since the exact mechanisms of non-PAF are not well understood.
Purpose
To investigate the effectiveness of GP ablation for autonomic modification and STED ablation for modulation of AF drivers.
Methods
Consecutive 149 non-PAF patients who underwent STED ablation in our center were enrolled. We detected STED areas within the whole left and right atrium during AF using PentaRay®, and ablated them. If AF was terminated during STED ablation, we finished the procedure without burning the remaining STED areas. If not, electrical cardioversion was applied. The outcome was compared with that in consecutive 156 non-PAF patients undergoing GP ablation previously in our center.
Results
(1) The clinical characteristics were comparable between two groups (see Table). (2) A Kaplan-Meier curve showed that there was no significant difference between the freedom rates from non-PAF/non-paroxysmal atrial tachycardia (non-PAT) after single procedure in STED group and GP group (Figure, left). (3) However, the freedom rates from non-PAT in STED group was significantly lower than that GP group (Figure, right).
Conclusions
The recurrence type of atrial arrhythmia after ablation was remarkably different between ablation of STED and GP. STED ablation might eliminate fibrillatory conduction and control AF driver in patients with non-PAF.
Freedom from atrial arrhythmia
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Sakata
- Takatsuki General Hospital, Takatsuki, Japan
| | - T Tanaka
- Takatsuki General Hospital, Takatsuki, Japan
| | - S Yamashita
- Takatsuki General Hospital, Takatsuki, Japan
| | - K Yamashiro
- Takatsuki General Hospital, Takatsuki, Japan
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15
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Sugimoto H, Murai H, Hamaoka T, Mukai Y, Inoue O, Okabe Y, Tokuhisa H, Takashima S, Kato T, Usui S, Sakata K, Talamura M. Novel index of arterial reflected waves, Arterial Velocity pulse Index, relates to muscle sympathetic nerve activity independent of Arterial Pressure volume Index in patients with hypertension. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Arterial reflected wave is determined by not only atherosclerosis but also sympathetic nerve activity. Recently, Arterial Velocity pulse Index (AVI), which is an index of arterial reflected waves, and Arterial Pressure volume Index (API), which is an index of volume of a conductive blood vessel, have been proposed as new index of arterial stiffness. However, it is unclear whether API and AVI would be associated with muscle sympathetic nerve activity (MSNA) in hypertensive subjects.
Purpose
The purpose of this study was to evaluate the correlation between AVI, API and MSNA in hypertensive subjects.
Method
41 hypertensive patients and 40 non-hypertensive subjects were included in this study. We performed a cross-sectional, observational study. Hypertension (HT) was defined as systolic blood pressure (SBP) ≥140 mmHg, diastolic blood pressure (DBP) ≥90 mmHg or medical treatment for HT. AVI and API was measured by NAS-1000 (Nihon Koden, Japan). MSNA, central sympathetic outflow to peripheral muscle, was recorded directly from peroneal nerve. MSNA was expressed by burst frequency (bursts/minute) and burst incidence (bursts/100heartbeats). Blood pressure, heart rate and MSNA were recorded simultaneously.
Results
Age, systolic and diastolic pressure were significantly higher in hypertensive patients compared to control (40±15 vs 61±13 years, p<0.001; 142±16 vs 113±9 mmHg, p<0.001; 81±14 vs 67±9 mmHg, p<0.001). MSNA and AVI were significantly augmented in hypertensive patients compared to control (34±11 vs. 23±6 bursts/min, p<0.05; 26±7 vs. 16±4, p<0.05). AVI was correlated with MSNA in each group (hypertension: r=0.59, P<0.001, non-hypertension: r=0.51, p<0.001). However, no correlation was shown between API and MSNA in each group (hypertension: r=0.22, p=0.15, non-hypertension: r=0.07, p=0.63). Multiple regression analysis also showed MSNA was significantly related with AVI but was not with API.
Conclusion
Our finding showed that AVI relates to MSNA independent of API in patients with hypertension. It suggested that Novel index of arterial reflected waves, AVI, is helpful to estimate augmented SNA in hypertensive subjects regardless of volume of a conductive blood vessel.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - H Murai
- Kanazawa University, Kanazawa, Japan
| | - T Hamaoka
- Kanazawa University, Kanazawa, Japan
| | - Y Mukai
- Kanazawa University, Kanazawa, Japan
| | - O Inoue
- Kanazawa University, Kanazawa, Japan
| | - Y Okabe
- Kanazawa University, Kanazawa, Japan
| | | | | | - T Kato
- Kanazawa University, Kanazawa, Japan
| | - S Usui
- Kanazawa University, Kanazawa, Japan
| | - K Sakata
- Kanazawa University, Kanazawa, Japan
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16
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Hayashi K, Fujino N, Furusho H, Usui S, Sakata K, Kato T, Tsuda T, Niwa S, Takeuchi K, Kawashiri M, Takamura M. Rare SCN10A variants associated with cardiac conduction system diseases. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The genetic bases of cardiac conduction-system disease (CCSD) range from ion channelopathies to mutations in many other genes. Genome-wide association studies have shown common variants in SCN10A influence cardiac conduction. However, it has not yet to be determined whether vulnerability to CCSD is associated with rare coding sequence variation in the SCN10A gene.
Purpose
We sought to determine the clinical impact of rare variants in SCN10A in patients with CCSD and classified the variants according to the 2015 American College of Medical Genetics and Genomics (ACMG) standards and guidelines.
Methods
We performed screening for rare variants (minor allele frequency ≤0.001) in SCN10A in CCSD patients with an onset at a young age under 65 or those who had a family history of pacemaker implantation (PMI) (n=40; 18 female; mean age, 41±18 years). We transiently expressed engineered variants in ND 7/23 cells, and conducted whole-cell voltage clamp experiments to clarify the functional properties of the Nav1.8 current.
Results
We identified nine rare variants in SCN10A in 7 patients. Two patients were carriers of two rare variants in SCN10A and 5 were carriers of one rare variant in SCN10A. Four patients were affected with sinus node dysfunction, 1 were atrioventricular block, and 2 were both dysfunctions. We performed electrophysiological study for 8 of 9 rare variants. It demonstrated that 2 rare variants showed gain-of-function, and 3 rare variants showed loss-of-function. We finally determined 5 likely pathogenic variants in SCN10A in 5 patients (12.5%) according to the ACMG standards and guidelines. All 5 patients underwent a pacemaker implantation at an average age of 43±16.
Conclusions
These results demonstrate that SCN10A variants play a pivotal role in enhanced susceptibility of CCSD. We suggest the importance for screening SCN10A variants in clinical settings.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- K Hayashi
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - N Fujino
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - H Furusho
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - S Usui
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - T Kato
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - T Tsuda
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - S Niwa
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - K Takeuchi
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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17
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Takashima S, Usui S, Matsuura S, Goten C, Inoue O, Ohtani K, Kubota K, Sakata K, Kawashiri M, Takamura M. Bone marrow-derived NGFR+ cells regulate arterial remodeling and those poor mobilizations in peripheral blood in acute coronary syndrome predicts plaque progression at the non-targeted lesion. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
In our previous 5-year cohort study, we demonstrated that low gene expression of nerve growth factor receptor (NGFR) in peripheral leucocytes in acute coronary syndrome (ACS) predicted repetitive coronary interventions at the de novo lesions. An NGFR-positive cell has been demonstrated to reside in bone marrow (BM) stromal fraction and to be increased in peripheral blood mononuclear cell (MNCs) fraction in patients with ischemic heart disease.
Purpose
To investigate whether the BM-NGFR+ cell is associated with arterial remodeling and the relationship between the levels of peripheral NGFR+ cells after ACS and coronary plaque progression in an experimental and prospective clinical study.
Methods and results
In an experimental study, 8-week-old C57B6/J wild type male mice were subjected to irradiation with 9.6 Gy and transplantation with BM (BMT) isolated from GFP-transgenic NGFR wild type (WT) or knock-out (KO) mice at day 1. Four weeks after BMT, the right carotid artery was ligated for 4 weeks. Induced neointimal area was increased (p<0.05), where cells under apoptosis were decreased (p<0.05) in NGFR-KO-BMT group compared to WT-BMT group (n=4). NGFR+ cells were not detected in wild type sham-operated artery, whereas in the ligated artery in WT-BMT group NGFR+ cells assembled in the developed neointima and exclusively presented double positive with GFP, but absent in NGFR-KO-BMT group (p<0.05, n=4). In a clinical study, thirty patients with ACS who underwent primary percutaneous coronary intervention (PCI) were enrolled. The peripheral blood sample was collected on days 0, 3 and 7, and 9 months follow-up and the number of NGFR+MNCs were measured by flowcytometric analysis. The plaque volume at non-targeted coronary lesion (non-TL:>5 mm proximal or distal to the implanted stents) were quantitatively analysed using gray-scale intravascular ultrasound (IVUS) and Q-IVUS™ software at the acute phase and 9 months follow-up. The number of NGFR+MNCs in peripheral blood was 1.5-fold increased at day 3 (0.064±0.056%) compared to day 0 (0.042±0.030%) (p<0.05). The change in normalized total plaque volume (TAVN) at non-TL at 9 months was negatively correlated with the number of NGFR+MNCs at day 0 (r=−0.51), day 3 (r=−0.51) and 9 months (r=−0.59) after ACS (p<0.05). Multiple regression analysis showed that NGFR+MNCs at day 0 (β=−0.48, p=0.01) and CRP (β=−0.53, P<0.01) are independent factors associating with TAVN change at non-TL at 9 months, regardless of LDL-cholesterol control level. ROC analysis revealed that NGFR+MNCs <0.049 at day 0 predicted the increase of TAVN with AUC 0.78; sensitivity 0.82 and specificity 0.67.
Conclusions
Bone marrow-derived peripheral NGFR+ cells negatively regulate arterial remodeling through appropriate apoptosis of neointimal cells and the peripheral level of NGFR+ cells in ACS predicts plaque progression at the non-targeted lesion.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): KAKENHI
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Affiliation(s)
- S Takashima
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - S Usui
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - S Matsuura
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - C Goten
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - O Inoue
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - K Ohtani
- Public Central Hospital of Matto Ishikawa, Hakusan, Japan
| | - K Kubota
- Public Central Hospital of Matto Ishikawa, Hakusan, Japan
| | - K Sakata
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Graduate School of Medicine, Kanazawa, Japan
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Kurokawa S, Kamei J, Sakata K, Sugihara T, Fujisaki A, Ando S, Takayama T, Morita T, Fujimura T. Questionnaire survey assessing seasonal changes in lower urinary tract symptoms in men with benign prostate hyperplasia. Turk J Urol 2020; 46:468-473. [PMID: 33052826 DOI: 10.5152/tud.2020.20185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 08/27/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE A prospective questionnaire survey was conducted for patients with benign prostatic hyperplasia (BPH) to clarify seasonal changes in the lower urinary tract symptoms (LUTS). MATERIAL AND METHODS Male patients receiving α1-adrenoreceptor antagonists for BPH were enrolled. They answered the International Prostate Symptom Score (IPSS) questionnaire, and an unvalidated questionnaire that consisted of 10 questions assessing variations in the urinary stream (voiding symptoms) and urinary frequency (storage symptoms), depending upon the seasons or the patients' subjective sensations of warm and cold in last one year. RESULTS A total of 412 participants answered IPSS and our unvalidated questionnaire. Of the 412 participants, 36.7% and 59.0% realized seasonal variations in urinary stream and frequency, respectively. Among patients perceiving seasonal urinary stream and urinary frequency changes (n=151 and n=243, respectively), significantly more patients realized weaker urinary stream, 59.8% (107/179) in winter compared with 26.2% (47/179) in summer, and increased urinary frequency, 69.8% (199/285) in winter compared with 20.7% (59/285) in summer (p<0.0001 and p<0.0001, respectively). Even in summer, when feeling cold, 34.7% and 56.3% realized a weaker urinary stream and an increased urinary frequency, and even in winter, when feeling warm, 53.4% and 69.4% realized a stronger urinary stream and a decreased urinary frequency. Those with seasonal stream changes showed a significantly higher IPSS total, voiding and post-voiding scores than those without, and those with seasonal frequency changes showed significantly higher IPSS total, storage, voiding, and post-voiding scores. CONCLUSION Our results revealed seasonal changes and feeling of hot and cold were associated with subjective changes of LUTS in BPH patients.
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Affiliation(s)
- Shinsuke Kurokawa
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan.,Department of Urology, Sano Kosei General Hospital, Sano-shi, Tochigi, Japan
| | - Jun Kamei
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Koichi Sakata
- Department of Urology, Imaichi Hospital, Nikko-shi, Tochigi, Japan
| | - Toru Sugihara
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Akira Fujisaki
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Satoshi Ando
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Tatsuya Takayama
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Tatsuo Morita
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Tetsuya Fujimura
- Department of Urology, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
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Amemiya K, Sakata K, Suzuki-Sakamaki M. Development of fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy in the soft x-ray region for time-resolved experiments. Rev Sci Instrum 2020; 91:093104. [PMID: 33003794 DOI: 10.1063/5.0021981] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/30/2020] [Indexed: 06/11/2023]
Abstract
A fluorescence-yield wavelength-dispersive x-ray absorption spectroscopy technique in the soft x-ray region, by which the x-ray absorption spectra are recorded without scanning the monochromator, has been developed. The wavelength-dispersed soft x rays, in which the wavelength (photon energy) continuously changes as a function of the position, illuminate the sample, and the emitted fluorescence soft x rays at each position are separately focused by an imaging optics onto each position at a soft x-ray detector. Ni L-edge x-ray absorption spectra for Ni and NiO thin films taken in the wavelength-dispersive mode are shown in order to demonstrate the validity of the technique. The development of the technique paves the way for a real-time observation of time-dependent processes, such as surface chemical reactions, with much higher gas pressure compared to the electron-yield mode, as well as under magnetic and electric fields.
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Affiliation(s)
- K Amemiya
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - K Sakata
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
| | - M Suzuki-Sakamaki
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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Kondo Y, Kaneko Y, Saito S, Ohta Y, Sakata K, Inoue Y, Takahashi C, Hiramoto K, Inamo J, Takeuchi T. SAT0113 DISCORDANCE OF CLINICAL REMISSION AND IMAGING REMISSION BY ULTRASONOGRAPHY IN PATIENTS WITH RHEUMATOID ARTHRITIS WITH BIOLOGIC AGENTS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Residual synovitis can be detected by sensitive modalities such as ultrasonography in patients with rheumatoid arthritis in clinical remission. On the other hand, a previous study has shown that ultrasound-guided treatment provides modest benefit compared to a conventional strategy aiming clinical remission in early patients. It is still unclear how discordant clinical remission is from imaging remission by ultrasonography in patients treated with biologic agentsObjectives:To clarify the discordance between clinical remission and imaging remission in patients with rheumatoid arthritis treated with biologic agents.Methods:Patients with rheumatoid arthritis who were treated with biologic agents and in clinical remission defined as disease activity score for 28 joints (DAS28)<2.6 were enrolled. All patients were performed comprehensive ultrasound examination of 44 joints as well as physical examinations. Ultrasound images of gray scale (GS) and power doppler (PD) were evaluated with a semi-quantitative score of 0-3. Imaging remission with ultrasound was defined as no PD signal detected in any joints. Clinical information was collected from their medical charts.Results:A total of 41 patients were enrolled with 22 patients treated with tumor necrosis factor (TNF)-α inhibitors and 19 with interleukin (IL)-6 inhibitors. The mean age, female ratio, the mean disease duration, and the mean duration of clinical remission were 60 years old, 87%, 5.1 years and 11.5 years. The imaging remission by ultrasonography was observed only in 51.2 %. When patients were divided according to biologic agents, baseline characteristics including median age, disease duration and clinically remission duration were comparable between both groups, while the rates of seropositivity and the stage of radiological progression was higher in IL-6 group (seropositivity, p=0.04; radiological progression, p=0.02). The mean DAS28 was 1.93 in the TNFα group and 1.02 in the IL-6 group. The discordance of clinical remission and imaging remission was observed in 28.6% of the TNFα group and 71.4% of the IL-6 group (p=0.03). The residual synovitis scores of GS and PD in 44 joints were significantly lower in the TNFα than the IL-6 group (GS, 1.1±1.8 vs 4.7 ± 4.6, p<0.01; PD, 0.6 ± 1.3 vs 3.3 ± 3.5, p<0.01, respectively). A receiver operating characteristic curve demonstrated an optimal score of DAS28 that discriminated imaging remission as 1.89 in the TNFα group and 1.25 in the IL-6 group.Conclusion:Our results showed that there was substantial discordance between clinical remission and imaging remission, especially in the patients treated with IL-6 inhibitors. In patients treated with biologic agents, clinical remission should be assessed more stringently than the usual 2.6, and ulltrasound-guided management may be useful.References:[1]Smolen JS, et al. Ann Rheum Dis 2020;0:1–15.[2]Iwamoto T, et al. Arthritis Care Res (Hoboken). 2014;66(10):1576-81[3]Tanaka Y. Ann Rheum Dis 2010;69:1286 –91[4]Kaneko Y, et al. Ann Rheum Dis 2018;77:1268–1275[5]Brown AK, et al. Arthritis Rheum 2008;58: 2958 – 67.Acknowledgments:We would like to thank Harumi Kondo for their assistance.Disclosure of Interests:Yasushi Kondo: None declared, Yuko Kaneko Speakers bureau: Dr. Kaneko reports personal fees from AbbVie, personal fees from Astellas, personal fees from Ayumi, personal fees from Bristol-Myers Squibb, personal fees from Chugai, personal fees from Eisai, personal fees from Eli Lilly, personal fees from Hisamitsu, personal fees from Jansen, personal fees from Kissei, personal fees from Pfizer, personal fees from Sanofi, personal fees from Takeda, personal fees from Tanabe-Mitsubishi, personal fees from UCB, Shuntaro Saito: None declared, Yuichiro Ohta: None declared, Komei Sakata: None declared, Yumiko Inoue: None declared, Chihiro Takahashi: None declared, Kazuoto Hiramoto: None declared, Jun Inamo: None declared, Tsutomu Takeuchi Grant/research support from: Eisai Co., Ltd, Astellas Pharma Inc., AbbVie GK, Asahi Kasei Pharma Corporation, Nippon Kayaku Co., Ltd, Takeda Pharmaceutical Company Ltd, UCB Pharma, Shionogi & Co., Ltd., Mitsubishi-Tanabe Pharma Corp., Daiichi Sankyo Co., Ltd., Chugai Pharmaceutical Co. Ltd., Consultant of: Chugai Pharmaceutical Co Ltd, Astellas Pharma Inc., Eli Lilly Japan KK, Speakers bureau: AbbVie GK, Eisai Co., Ltd, Mitsubishi-Tanabe Pharma Corporation, Chugai Pharmaceutical Co Ltd, Bristol-Myers Squibb Company, AYUMI Pharmaceutical Corp., Eisai Co., Ltd, Daiichi Sankyo Co., Ltd., Gilead Sciences, Inc., Novartis Pharma K.K., Pfizer Japan Inc., Sanofi K.K., Dainippon Sumitomo Co., Ltd.
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Yamanishi T, Kaga K, Sakata K, Yokoyama T, Kageyama S, Fuse M, Tokunaga S. Back Cover Image, Volume 39, Number 2, February 2020. Neurourol Urodyn 2020. [DOI: 10.1002/nau.24319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tomonori Yamanishi
- Department of Urology Continence Center, Dokkyo Medical University Tochigi Japan
| | - Kanya Kaga
- Department of Urology Continence Center, Dokkyo Medical University Tochigi Japan
| | - Koichi Sakata
- Department of Urology Imaichi Hospital Tochigi Japan
| | | | | | - Miki Fuse
- Department of Urology Continence Center, Dokkyo Medical University Tochigi Japan
| | - Shoji Tokunaga
- Medical Information Center Kyushu University Hospital Fukuoka Japan
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Yamanishi T, Kaga K, Sakata K, Yokoyama T, Kageyama S, Fuse M, Tokunaga S. A randomized controlled study of the efficacy of tadalafil monotherapy versus combination of tadalafil and mirabegron for the treatment of persistent overactive bladder symptoms in men presenting with lower urinary tract symptoms (CONTACT Study). Neurourol Urodyn 2020; 39:804-812. [PMID: 31961963 PMCID: PMC7027497 DOI: 10.1002/nau.24285] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 09/06/2019] [Accepted: 01/10/2020] [Indexed: 11/30/2022]
Abstract
Aim To evaluate efficacy and safety of combination of tadalafil + mirabegron for overactive bladder/benign prostatic hyperplasia (OAB/BPH). Methods Male patients with lower urinary tract symptoms (50 to 89 years), with remaining OAB symptoms even after administering tadalafil for more than 8 weeks were randomly assigned to either tadalafil monotherapy group (5 mg/day) or tadalafil/mirabegron combination therapy group (5 mg/50 mg/day). The primary endpoint was change from baseline in total OAB symptom score (OABSS) at week 12. The secondary endpoints were changes in International Prostate Symptom Score (IPSS), NIH‐chronic prostatitis symptom index (NIH‐CPSI), and micturition chart parameters at weeks 4 and 12. Results A total of 176 patients were randomized to either monotherapy (87 patients) or combination therapy (89 patients). The baseline characteristics of patients in the two groups were similar. The total OABSS (95% confidence interval) of combination therapy was significantly decreased by 1.78 (1.05‐2.50) points compared with that of monotherapy (P < .001). Changes from baseline in OABSS nighttime voiding score, urgency score, urgency incontinence score, IPSS storage subscores, NIH‐CPSI total score, and numbers of voids, nighttime‐voids, and urgency episodes/day in micturition chart were significantly reduced in combination therapy (all P < .001). Patient‐reported outcome was significantly more satisfactory in combination therapy than in monotherapy (P < .001). One moderate adverse event (pain in hip joint) with hardly presumed causal relationship with therapy and seven mild adverse events were noted in monotherapy and combination therapy group, respectively. Conclusions The effect of tadalafil/mirabegron combination therapy on relieving OAB symptoms appeared to be greater than that of tadalafil monotherapy and can be safely used.
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Affiliation(s)
- Tomonori Yamanishi
- Department of Urology, Continence Center, Dokkyo Medical University, Tochigi, Japan
| | - Kanya Kaga
- Department of Urology, Continence Center, Dokkyo Medical University, Tochigi, Japan
| | - Koichi Sakata
- Department of Urology, Imaichi Hospital, Tochigi, Japan
| | | | | | - Miki Fuse
- Department of Urology, Continence Center, Dokkyo Medical University, Tochigi, Japan
| | - Shoji Tokunaga
- Medical Information Center, Kyushu University Hospital, Fukuoka, Japan
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Sakata K, Mitsuda H, Ito J, Isaka A, Gouda A, Soejima K. P942 Outcome prediction by exercise stress echocardiography and cardiopulmonary exercise testing assessment in patients with heart failure. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Cardiopulmonary exercise testing (CPX) is essential to the assessment of functional impairment and prognosis in patients with heart failure (HF). Peak oxygen consumption (peak VO2) continues to be considered the gold standard for assessing prognosis in HF. The minute ventilation-carbon dioxide production (VE-VCO2) slope has recently demonstrated prognostic significance in patients with HF. Ergometer stress echocardiography (Erg-Echo) is useful to evaluate the exercise-induced pulmonary hypertension and the potential cardiac dysfunction that are difficult to evaluate in the resting state.
Objective
The aim of this study is to evaluate the relationship between CPX and Erg-echo indices, and the usefulness of Erg-echo to determine the severity of cardiac dysfunction and the prognosis in patients with HF.
Methods
We studied 58 patients with HF (age 65.2 ± 11.9 years) and performed CPX and Erg-Echo. The peak VO2 and the VE-VCO2 slope were measured by CPX. Cardiac output (CO) and estimated mean pulmonary artery pressure (mPAP) were measured by Erg-Echo at rest and peak exercise load, and the change ratio (ΔmPAP / ΔCO) were calculated. We evaluated the clinical outcome during a1 year period.
Results
The ΔmPAP / ΔCO was significantly correlated with the peak VO2 (R = -0.6767, P <0.0001) and the VE-VCO2 slope (R = 0.6809, P <0.0001). Cardiovascular events (1 patient of cardiovascular death, 8 patients of re-hospitalization due to HF, 4 patients of myocardial ischemia, 2 patients of Cardiac Resynchronization Therapy (CRT) devices implantation, 1 patient of ventricular tachycardia) developed in 16 of the 58 patients (27.5%: Group CE) during the 1 year. The peak VO2 was significantly lower (12.1 ± 2.5 vs. 16.1 ± 3.1ml/min/kg, P <0.0001) and the VE-VCO2 slope was significantly higher (41.1 ±. 12.3 vs. 31.8 ± 6.1ml/ml, P <0.0001) in Group CE compared to the other 42 patients (Group N). The ΔmPAP was significantly higher (19.1 ± 4.4 vs. 14.9 ± 6.4, P = 0.0408) and the ΔCO was significantly lower (2.4 ± 1.2 vs. 4.1 ± 2.0, P = 0.0078), and the ΔmPAP / ΔCO was significantly higher (9.7 ± 4.6 vs. 4.4 ± 2.4, P <0.0001) in Group CE compared to Group N.
Conclusions
The ΔmPAP/ ΔCO by Erg-Echo is useful to evaluate the severity of cardiac dysfunction and the prognosis of HF patients.
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Affiliation(s)
- K Sakata
- Kyorin University School of Medicine, Tokyo, Japan
| | - H Mitsuda
- Kyorin University School of Medicine, Tokyo, Japan
| | - J Ito
- Kyorin University School of Medicine, Tokyo, Japan
| | - A Isaka
- Kyorin University School of Medicine, Tokyo, Japan
| | - A Gouda
- Kyorin University School of Medicine, Tokyo, Japan
| | - K Soejima
- Kyorin University School of Medicine, Tokyo, Japan
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Sakata K, Mitsuda H, Ito J, Isaka A, Furuya M, Minamishima T, Matsushita K, Soejima K. P1802 Prevalence and prognostic significance of pulmonary artery aneurysms in patients with pulmonary artery hypertension. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1155] [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
Pulmonary artery aneurysm (PAA) occurs in some patients with pulmonary arterial hypertension (PAH) and can be accompanied by various complications.
Objective
The aim of the this study is to evaluate the characteristics of cardiac dysfunction and the prognostic impact of PAA by analysing the outcome of patients with PAH complicated by PAA.
Methods
We performed echocardiography and right-heart catheterization in 130 PAH patients. We measured the maximum dimensions of the main pulmonary artery (MPA) trunk. We evaluated the right ventricular (RV) function and the five-year prognosis of patients with PAA.
Results
The maximum MPA trunk diameter of >40 mm by echocardiography was defined as PAA. PAA appeared in 32 of the 130 PAH patients (24.6%: Group PAA), other 98 patients were defined as Group non-PAA. Systolic pulmonary artery pressure (76 ±18 vs. 61 ± 21 mmHg, P = 0.0008) and mean right atrial pressure (10.0 ± 8.1 vs. 5.4 ± 3.8 mmHg, P < 0.0001) were significantly higher in Group PAA than in Group non-PAA. RV end-diastolic area index was significantly larger (37.3 ± 8.8 vs. 32.3 ± 7.8 mmHg, P = 0.0048), and RV fractional area change (32 ± 8 vs. 36 ± 9 %, P = 0.0176) and RV longitudinal strain amplitude (-16 ±5 vs. -20 ± 6, P = 0.0017) were significantly lower in Group PAA than those in Group non-PAA. During the five-year follow-up period, 20 patients (15%) died. The five-year mortality rate was significantly higher in Group PAA compared to Group non-PAA (30% vs. 10%, P = 0.007).
Conclusion
In PAH patients with PAA, RV dysfunction was more severe and the prognosis was poor. Assessment of PAA can be a useful index for the extraction of high-risk PAH patients.
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Affiliation(s)
- K Sakata
- Kyorin University School of Medicine, Tokyo, Japan
| | - H Mitsuda
- Kyorin University School of Medicine, Tokyo, Japan
| | - J Ito
- Kyorin University School of Medicine, Tokyo, Japan
| | - A Isaka
- Kyorin University School of Medicine, Tokyo, Japan
| | - M Furuya
- Kyorin University School of Medicine, Tokyo, Japan
| | | | - K Matsushita
- Kyorin University School of Medicine, Tokyo, Japan
| | - K Soejima
- Kyorin University School of Medicine, Tokyo, Japan
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Ohnuma H, Onoyama N, Hayasaka N, Sato M, Murase K, Takada K, Miyanishi K, Hirakawa M, Sagawa T, Hori M, Someya M, Nakata K, Sakata K, Kato J. Long-term results of a PII study of chemoradiotherapy with docetaxel, nedaplatin, and fluorouracil for esophageal cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz338.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yoshida S, Nomura A, Tada H, Sakata K, Nakanishi C, Fujino N, Hosomichi K, Tajima A, Takamura M. 3073Leveraging transcriptome sequencing for detecting novel disease-related pathways using human cardiac sarcoidosis myocardium biopsies. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background/Introduction
Cardiac sarcoidosis (CS) is one of the main causes of poor outcomes in patients with sarcoidosis, a systemic granulomatous disorder of complex etiology including a genetically susceptible host and specific exposure to disease-triggering antigens. Recently, transcriptome analysis using sarcoidosis peripheral monocytes was reported to be useful for exploring genetic susceptibility and novel disease-causing pathways. However, transcriptome sequencing has not been used to explore disease-related genes and pathways directly using human CS myocardial biopsies.
Purpose
This study aimed to identify transcriptome profiles and novel disease-related pathways of CS by comparing human CS myocardial biopsies with control samples using ribonucleic acid (RNA) sequencing (RNA-Seq).
Methods
We assessed 30 patients with suspected myocardial disorders who underwent transcatheter endomyocardial biopsies at our University Hospital, Japan. Of those, 7 were clinically diagnosed with CS, 9 with hypertrophic cardiomyopathy (HCM), and 14 with dilated cardiomyopathy (DCM). Messenger RNAs were extracted from cardiac muscle biopsies using the Ovation SoLo RNA-Seq System (NuGEN Technologies), according to the manufacturer's instructions. Sequencing was performed with coverage of approximately 20 million reads per sample using Illumina HiSeq 2000. Sequencing reads were mapped using the STAR 2-pass method with GRCh37 as the reference. The DESeq2 R package (version 3.8) was used for further analyses. Principal component analysis (PCA) on gene expression was conducted for detecting outliers such as non-muscular samples. Differential gene expression analysis was performed between the 7 patients with CS and 23 patients with cardiomyopathy (HCM and DCM, non-CS). Gene Ontology (GO) enrichment analysis was conducted to estimate possible disease-related pathways.
Results
We successfully sequenced 60 myocardial biopsy samples (original and biological duplicates) from 30 CS patients. Of these, 2 outlier samples shown by the PCA plot were removed, and 58 were used for further analyses. We found 243 genes that were differentially expressed between CS patients and non-CS patients. Top-rated genes were RP11–366M4.8, RELN, S100A6, WASF3and UCHL1. Pathway analysis using GO demonstrated enrichment oflymphocyte activation (P=4.8x10–16), organelle fission (P=6.1x10–14), the M phase of the mitotic cell cycle (P=2.2x10–13), nuclear division (P=2.4x10–13), mitosis (P=2.4x10–13) and T-cell activation pathways (P=1.2x10–12).
Conclusions
Our differential gene expression and pathway analysis results using human CS myocardial biopsies suggested that lymphocyte activation, specifically the T-cell activation pathway, is linked to CS pathogenesis. Further studies are needed to decipher the role of specific genes related to genetic susceptibility and/or pathways associated with CS occurrence.
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Affiliation(s)
- S Yoshida
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - A Nomura
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - H Tada
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - C Nakanishi
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - N Fujino
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
| | - K Hosomichi
- Kanazawa University Graduate School of Advance Preventive Medical Sciences, Department of Bioinformatics and Genomics, Kanazawa, Japan
| | - A Tajima
- Kanazawa University Graduate School of Advance Preventive Medical Sciences, Department of Bioinformatics and Genomics, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Graduate School of Medicine, Department of Cardiology, Kanazawa, Japan
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Yamauchi H, Kondo K, Tanaka S, Okuda N, Nakagawa H, Sakata K, Saitoh S, Okayama A, Yoshita K, Miura K, Chan Q, Masaki K, Elliott P, Stamler J, Ueshima H. P6234The relationship of alcohol consumption with risk factors of coronary heart disease and the intake of macro- and micro-nutrients in Japanese: the INTERLIPID study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Many studies have reported the J-shaped relationship between alcohol consumption and coronary heart disease (CHD) risk; therefore, light-drinkers is generally recognized to be associated with the lower risk of CHD. However, the mechanisms of lower risk for CHD in light-drinkers are still unclear. Alcohol drinking status is likely to be associated with not only CHD risk factors but also dietary intake. Nevertheless, few studies report these relationships in detail.
Purpose
The purpose of this study is to evaluate the relationships of alcohol drinking status with CHD classical risk factors and the intake of macro- and micro- nutrients in Japanese.
Methods
Study participants were 1,090 Japanese men and women aged 40–59 years from The INTERLIPID study excepted for 55 individuals who had missing data (n=26) and were past-drinkers (n=29). Alcohol consumption was assessed with two 7-day alcohol records, and average ethanol intake (per week) was calculated. Participants were classified into following 4 groups: non-drinkers (0g/week), light-drinkers (<100 g/week), moderate-drinkers (100–299 g/week), and heavy-drinkers (≥300 g/week). Serum LDL and HDL cholesterol, blood pressure (BP), the prevalence of hypertension and dyslipidemia, and smoking status were assessed as CHD risk factors. The intake of energy and macro- and micro-nutrients were evaluated from the four-timed in-depth 24-hr dietary recalls. Nutrient intake densities were calculated per total energy intake without alcohol. The analysis of variance and chi-squared test were used to evaluate the relations of alcohol status with CHD risk factors and nutrient intake.
Results
Serum HDL cholesterol levels increased and LDL cholesterol levels decreased with increasing alcohol consumption. Systolic and diastolic BP increased with increasing alcohol consumption. J-shaped relationships with alcohol consumption were observed for the proportion of current smoker, number of cigarettes, and the prevalence of hypertension; that is, light-drinkers was lowest among all groups. The prevalence of dyslipidemia was the highest in non-drinkers, and decreased with increasing alcohol consumption. In heavy-drinkers, total energy (kcal/day) was the highest, but energy intake without alcohol (kcal/day) was the lowest. For macronutrients, the intake of carbohydrate (%kcal) decreased, and the intakes of total and animal protein (%kcal) increased with increasing alcohol consumption. The intakes of total cholesterol (mg/1000kcal) and sodium (mg/1000kcal) increased, and total fiber (g/1000kcal) decreased with increasing alcohol consumption. These associations were similar in men and women.
Conclusions
Alcohol consumption was related with not only CHD classical risk factors but also the intake of macro- and micro-nutrients. Non-drinkers had a higher proportion of some CHD risk factors than light-drinkers. These results might influence on J-shaped relationship between alcohol consumption and CHD risk.
Acknowledgement/Funding
1: Ministry of Education, Science, Sports, and Culture of Japan, 2: National Institutes of Health, Bethesda, MD, USA
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Affiliation(s)
- H Yamauchi
- Shiga University of Medical Science, Center for Epidemiologic Research in Asia, Shiga, Japan
| | - K Kondo
- Shiga University of Medical Science, Department of Public Health, Shiga, Japan
| | - S Tanaka
- Shiga University of Medical Science, Department of Medical Statistics, Shiga, Japan
| | - N Okuda
- University of Human Arts and Sciences, Department of Health and Nutrition, Saitama, Japan
| | - H Nakagawa
- Kanazawa Medical University, Department of Epidemiology and Public Health, Kanazawa, Japan
| | - K Sakata
- Iwate Medical University, Department of Hygiene and Preventive Medicine, Iwate, Japan
| | - S Saitoh
- Sapporo Medical University, School of Health Sciences, School of Medicine, Sapporo, Japan
| | - A Okayama
- Research Institute of Strategy for Prevention, Tokyo, Japan
| | - K Yoshita
- Osaka City University, Department of Food Science and Nutrition, Osaka, Japan
| | - K Miura
- Shiga University of Medical Science, Department of Public Health, Shiga, Japan
| | - Q Chan
- Imperial College London, Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, London, United Kingdom
| | - K Masaki
- University of Hawaii and Kuakini Medical Center, Department of Geriatric Medicine, John A. Burns School of Medicine, Honolulu, United States of America
| | - P Elliott
- Imperial College London, Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, London, United Kingdom
| | - J Stamler
- Northwestern University, Department of Preventive Medicine, Feinberg School of Medicine, Chicago, United States of America
| | - H Ueshima
- Shiga University of Medical Science, Center for Epidemiologic Research in Asia, Shiga, Japan
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Tada H, Nakagawa T, Okada H, Nakahashi T, Mori M, Sakata K, Kawashiri M, Takamura M. P1535Clinical impact of carotid plaque score rather than carotid intima-media thickness on atherosclerotic cardiovascular disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Carotid intima-media thickness (cIMT) assessed by ultrasound has been widely accepted as a surrogate marker of atherosclerotic cardiovascular disease. On the other hand, carotid plaque score (cPS) reflecting throughout the carotid artery plaque burden may be better marker.
Methods
We retrospectively examined 2,035 patients who underwent carotid ultrasonography between January 2006 and December 2015 at our University Hospital. Median follow-up period was 4 years. We used Cox models that adjusted for established risk factors of ASCVD, including age, gender, hypertension, diabetes, smoking, and serum lipids to assess the association of cIMT as well as cPS with major adverse cardiac events (MACE). MACE was defined as all-cause mortality or rehospitalization for a cardiovascular-related illness
Results
During follow-up, 243 participants experienced MACE. After adjustment for established risk factors, cPS was associated with MACE (hazard ratio [HR] = 3.38 for top quintile vs. bottom quintile of cPS; 95% confidence interval [CI] 1.82 to 6.27; P-trend = 1.4×10–8), while cIMT was not (HR = 0.88, P=0.57). Addition of the cPS to established risk factors significantly improved risk discrimination (C-index 0.726 vs. 0.746; P=0.017)
Conclusion
As a marker, cPS, rather than cIMT can identify 20% of individuals who are at more than three-fold increased risk for MACE. Targeting diagnostic or therapeutic interventions to this subset may prove clinically useful.
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Affiliation(s)
- H Tada
- Kanazawa University, Kanazawa, Japan
| | | | - H Okada
- Kanazawa University, Kanazawa, Japan
| | | | - M Mori
- Kanazawa University, Kanazawa, Japan
| | - K Sakata
- Kanazawa University, Kanazawa, Japan
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Ono T, Sakata K, Tanaka N, Hashiguchi S, Migita H, Kiyokawa K, Morioka M, Kurita T, Sato K, Takeshige N, Umeno H. Salvage surgery for a locally persistent or recurrent tumour in maxillary cancer patients who have undergone radiotherapy and concomitant intra-arterial cisplatin: implications for surgical margin assessment. Int J Oral Maxillofac Surg 2019; 48:567-575. [DOI: 10.1016/j.ijom.2018.10.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/07/2018] [Accepted: 10/25/2018] [Indexed: 11/26/2022]
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Moriwaki M, Wakabayashi H, Sakata K, Domen K. The Effect of Branched Chain Amino Acids-Enriched Nutritional Supplements on Activities of Daily Living and Muscle Mass in Inpatients with Gait Impairments: A Randomized Controlled Trial. J Nutr Health Aging 2019; 23:348-353. [PMID: 30932133 DOI: 10.1007/s12603-019-1172-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To investigate the effects of continuous intervention with branched chain amino acids-enriched nutritional supplements from the acute phase to convalescent rehabilitation wards in inpatients with gait impairments. DESIGN Open-label, randomized, parallel-group comparison study (UMIN Clinical Trials Registry ID: UMIN000018640). SETTING Acute care and convalescent rehabilitation wards. PARTICIPANTS We studied 80 patients undergoing stand/gait training. INTERVENTIONS Participants in the intervention group (RJ group) received nutritional supplements (jelly foods comprising 2500 mg BCAA and 20 IU vitamin D) twice a day until hospital discharge. MEASUREMENTS The primary outcome was the motor components of the Functional Independence Measure (FIM-m), and the secondary outcome was skeletal muscle mass index. RESULTS Analyses were conducted on 55 patients who were able to perform stand/gait training continuously from the acute until the recovery phases. FIM-m was significantly elevated in the RJ group and the control group , but no difference was noted between the two groups. Only the RJ group showed a significant increase in skeletal muscle mass index, and the amount of variation was significantly different between the two groups (the control group decreased an average of 2.2% and the RJ group increased an average of 4.3%; P = 0.014). A significant decrease in body weight was found only in the control group (P = 0.084). CONCLUSIONS Nutritional interventions using branched chain amino acids (BCAA)-enriched nutritional supplements demonstrated no significant difference in activities of daily living; however, an increase in skeletal muscle mass was noted. Skeletal muscle mass and body weight differed significantly between the two groups, and BCAA-enriched nutritional supplements intake in acute and convalescent rehabilitation wards may be effective for the prevention of malnutrition and sarcopenia.
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Affiliation(s)
- M Moriwaki
- Misa Moriwaki MD, Department of Rehabilitation Medicine, Midorigaoka Hospital, 3-13-1 Makami-cho, Takatsuki, Osaka, Japan 569-1121, Tel.: +81-72-681-5717, Fax: +81-72-681-5796, E-mail:
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Nakahashi T, Sakata K, Tada H, Terai H, Horita Y, Ikeda M, Namura M, Takamura M, Hayashi K, Kawashiri M, Yamagishi M. P3672Assessment of ankle-brachial index to predict in-hospital bleeding complication and optimal duration of dual antiplatelet therapy in patients with acute coronary syndrome. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T Nakahashi
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - K Sakata
- Kanazawa University Hospital, Division of Cardiovascular Medicine, Kanazawa, Japan
| | - H Tada
- Kanazawa University Hospital, Division of Cardiovascular Medicine, Kanazawa, Japan
| | - H Terai
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - Y Horita
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Ikeda
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Namura
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Takamura
- Kanazawa University Hospital, Disease Control and Homeostasis, Kanazawa, Japan
| | - K Hayashi
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Kawashiri
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
| | - M Yamagishi
- Kanazawa Cardiovascular Hospital, Department of Cardiology, Kanazawa, Japan
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Gnatiuc L, Herrington WG, Halsey J, Tuomilehto J, Fang X, Kim HC, De Bacquer D, Dobson AJ, Criqui MH, Jacobs DR, Leon DA, Peters SAE, Ueshima H, Sherliker P, Peto R, Collins R, Huxley RR, Emberson JR, Woodward M, Lewington S, Aoki N, Arima H, Arnesen E, Aromaa A, Assmann G, Bachman DL, Baigent C, Bartholomew H, Benetos A, Bengtsson C, Bennett D, Björkelund C, Blackburn H, Bonaa K, Boyle E, Broadhurst R, Carstensen J, Chambless L, Chen Z, Chew SK, Clarke R, Cox C, Curb JD, D'Agostino R, Date C, Davey Smith G, De Backer G, Dhaliwal SS, Duan XF, Ducimetiere P, Duffy S, Eliassen H, Elwood P, Empana J, Garcia-Palmieri MH, Gazes P, Giles GG, Gillis C, Goldbourt U, Gu DF, Guasch-Ferre M, Guize L, Haheim L, Hart C, Hashimoto S, Hashimoto T, Heng D, Hjermann I, Ho SC, Hobbs M, Hole D, Holme I, Horibe H, Hozawa A, Hu F, Hughes K, Iida M, Imai K, Imai Y, Iso H, Jackson R, Jamrozik K, Jee SH, Jensen G, Jiang CQ, Johansen NB, Jorgensen T, Jousilahti P, Kagaya M, Keil J, Keller J, Kim IS, Kita Y, Kitamura A, Kiyohara Y, Knekt P, Knuiman M, Kornitzer M, Kromhout D, Kronmal R, Lam TH, Law M, Lee J, Leren P, Levy D, Li YH, Lissner L, Luepker R, Luszcz M, MacMahon S, Maegawa H, Marmot M, Matsutani Y, Meade T, Morris J, Morris R, Murayama T, Naito Y, Nakachi K, Nakamura M, Nakayama T, Neaton J, Nietert PJ, Nishimoto Y, Norton R, Nozaki A, Ohkubo T, Okayama A, Pan WH, Puska P, Qizilbash N, Reunanen A, Rimm E, Rodgers A, Saitoh S, Sakata K, Sato S, Schnohr P, Schulte H, Selmer R, Sharp D, Shifu X, Shimamoto K, Shipley M, Silbershatz H, Sorlie P, Sritara P, Suh I, Sutherland SE, Sweetnam P, Tamakoshi A, Tanaka H, Thomsen T, Tominaga S, Tomita M, Törnberg S, Tunstall-Pedoe H, Tverdal A, Ueshima H, Vartiainen E, Wald N, Wannamethee SG, Welborn TA, Whincup P, Whitlock G, Willett W, Woo J, Wu ZL, Yao SX, Yarnell J, Yokoyama T, Yoshiike N, Zhang XH. Sex-specific relevance of diabetes to occlusive vascular and other mortality: a collaborative meta-analysis of individual data from 980 793 adults from 68 prospective studies. Lancet Diabetes Endocrinol 2018; 6:538-546. [PMID: 29752194 PMCID: PMC6008496 DOI: 10.1016/s2213-8587(18)30079-2] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/20/2018] [Accepted: 02/26/2018] [Indexed: 01/06/2023]
Abstract
BACKGROUND Several studies have shown that diabetes confers a higher relative risk of vascular mortality among women than among men, but whether this increased relative risk in women exists across age groups and within defined levels of other risk factors is uncertain. We aimed to determine whether differences in established risk factors, such as blood pressure, BMI, smoking, and cholesterol, explain the higher relative risks of vascular mortality among women than among men. METHODS In our meta-analysis, we obtained individual participant-level data from studies included in the Prospective Studies Collaboration and the Asia Pacific Cohort Studies Collaboration that had obtained baseline information on age, sex, diabetes, total cholesterol, blood pressure, tobacco use, height, and weight. Data on causes of death were obtained from medical death certificates. We used Cox regression models to assess the relevance of diabetes (any type) to occlusive vascular mortality (ischaemic heart disease, ischaemic stroke, or other atherosclerotic deaths) by age, sex, and other major vascular risk factors, and to assess whether the associations of blood pressure, total cholesterol, and body-mass index (BMI) to occlusive vascular mortality are modified by diabetes. RESULTS Individual participant-level data were analysed from 980 793 adults. During 9·8 million person-years of follow-up, among participants aged between 35 and 89 years, 19 686 (25·6%) of 76 965 deaths were attributed to occlusive vascular disease. After controlling for major vascular risk factors, diabetes roughly doubled occlusive vascular mortality risk among men (death rate ratio [RR] 2·10, 95% CI 1·97-2·24) and tripled risk among women (3·00, 2·71-3·33; χ2 test for heterogeneity p<0·0001). For both sexes combined, the occlusive vascular death RRs were higher in younger individuals (aged 35-59 years: 2·60, 2·30-2·94) than in older individuals (aged 70-89 years: 2·01, 1·85-2·19; p=0·0001 for trend across age groups), and, across age groups, the death RRs were higher among women than among men. Therefore, women aged 35-59 years had the highest death RR across all age and sex groups (5·55, 4·15-7·44). However, since underlying confounder-adjusted occlusive vascular mortality rates at any age were higher in men than in women, the adjusted absolute excess occlusive vascular mortality associated with diabetes was similar for men and women. At ages 35-59 years, the excess absolute risk was 0·05% (95% CI 0·03-0·07) per year in women compared with 0·08% (0·05-0·10) per year in men; the corresponding excess at ages 70-89 years was 1·08% (0·84-1·32) per year in women and 0·91% (0·77-1·05) per year in men. Total cholesterol, blood pressure, and BMI each showed continuous log-linear associations with occlusive vascular mortality that were similar among individuals with and without diabetes across both sexes. INTERPRETATION Independent of other major vascular risk factors, diabetes substantially increased vascular risk in both men and women. Lifestyle changes to reduce smoking and obesity and use of cost-effective drugs that target major vascular risks (eg, statins and antihypertensive drugs) are important in both men and women with diabetes, but might not reduce the relative excess risk of occlusive vascular disease in women with diabetes, which remains unexplained. FUNDING UK Medical Research Council, British Heart Foundation, Cancer Research UK, European Union BIOMED programme, and National Institute on Aging (US National Institutes of Health).
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Tsubota-Utsugi M, Yonekura Y, Tanno K, Nozue M, Shimoda H, Nishi N, Sakata K, Kobayashi S. Association between health risks and frailty in relation to the degree of housing damage among elderly survivors of the great East Japan earthquake. BMC Geriatr 2018; 18:133. [PMID: 29898680 PMCID: PMC6001143 DOI: 10.1186/s12877-018-0828-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 05/28/2018] [Indexed: 11/15/2022] Open
Abstract
Background Many survivors of the Great East Japan Earthquake that occurred in 2011 were at risk of deteriorating health, especially elderly people living in disaster-stricken areas. The objectives of this prospective study were: a) to clarify the different lifestyle and psychosocial factors associated with frailty by sex among the non-disabled elderly survivors, and b) to describe the differences in characteristics stratified by the degree of disaster-related housing damage. Methods We followed 2261 Japanese survivors aged ≥65 years (45.3% male; mean age, 71.7 years) without disability or frailty who completed a self-administered questionnaire at baseline. All participants completed a baseline questionnaire in 2011 and at least one identical follow-up questionnaire between 2012 and 2015 regarding lifestyle (smoking status, alcohol intake, physical activity, sedentary lifestyle, and dietary intake) and psychosocial factors (self-rated health, standard of living, psychological distress, and social networks). Frailty was defined as a score of ≥5 on the Kihon Checklist, which is used by the Japanese government to certify the need for long-term care insurance. Adjusted odds ratios and 95% confidence intervals with frailty as the dichotomous dependent variable and health factors as the independent variables were calculated using a multilevel model for repeated measures by sex, followed by stratification analyses by the degree of housing damage. Results Over the 4-year study period, 510 participants (22.6%) developed frailty. In the post-disaster setting, many of the psychosocial factors remained more prevalent 4 years later among survivors with extensive housing damage. The presence of risk factors regarding the development of frailty differed by the degree of housing damage. Among men, psychological distress, in parallel with a poor social network, was related to frailty among only the participants with extensive housing damage and those living in temporary housing, whereas among women, worsening psychological distress was associated only with no damage and no displaced survivors. Among women with extensive damage and displacement, health outcomes such as overweight and diabetes and poor social networks were strongly related to frailty. Conclusions Lifestyle and psychosocial factors associated with the risk of frailty differ by sex and the degree of housing damage. Electronic supplementary material The online version of this article (10.1186/s12877-018-0828-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- M Tsubota-Utsugi
- Department of Hygiene and Preventive Medicine, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan.
| | - Y Yonekura
- Graduate School of Nursing Science, St. Luke's International University, Tokyo, Japan
| | - K Tanno
- Department of Hygiene and Preventive Medicine, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - M Nozue
- Department of Health and Nutritional Sciences, Faculty of Health Promotional Sciences, Tokoha University, Shizuoka, Japan
| | - H Shimoda
- Department of Hygiene and Preventive Medicine, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - N Nishi
- National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo, Japan
| | - K Sakata
- Department of Hygiene and Preventive Medicine, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan
| | - S Kobayashi
- Iwate Medical University School of Medicine, Iwate, Japan
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Dong BE, Xue Y, Sakata K. The effect of enriched environment across ages: A study of anhedonia and BDNF gene induction. Genes Brain Behav 2018; 17:e12485. [PMID: 29717802 DOI: 10.1111/gbb.12485] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/26/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022]
Abstract
Enriched environment treatment (EET) is a potential intervention for depression by inducing brain-derived neurotrophic factor (BDNF). However, its age dependency remains unclear. We recently found that EET during early-life development (ED) was effective in increasing exploratory activity and anti-despair behavior, particularly in promoter IV-driven BDNF deficient mice (KIV), with the largest BDNF protein induction in the hippocampus and frontal cortex. Here, we further determined age dependency of EET effects on anhedonia and promoter-specific BDNF transcription, by using the sucrose preference test and qRT-PCR. Wild-type (WT) and KIV mice received 2 months of EET during ED, young-adulthood and old-adulthood (0-2, 2-4 and 12-14 months, respectively). All KIV groups showed reduced sucrose preference, which EET equally reversed regardless of age. EET increased hippocampal BDNF mRNA levels for all ages and genotypes, but increased frontal cortex BDNF mRNA levels only in ED KIV and old WT mice. Transcription by promoters I and IV was age-dependent in the hippocampus of WT mice: more effective induction of exon IV or I during ED or old-adulthood, respectively. Transcription by almost all 9 promoters was age-specific in the frontal cortex, mostly observed in ED KIV mice. After discontinuance of EET, the EET effects on anti-anhedonia and BDNF transcription in both regions persisted only in ED KIV mice. These results suggested that EET was equally effective in reversing anhedonia and inducing hippocampal BDNF transcription, but was more effective during ED in inducing frontal cortex BDNF transcription and for lasting anti-anhedonic and BDNF effects particularly in promoter IV-BDNF deficiency.
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Affiliation(s)
- B E Dong
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Y Xue
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
| | - K Sakata
- Department of Pharmacology, University of Tennessee Health Science Center, Memphis, Tennessee
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Ishibashi Y, Kudo M, Yonezawa H, Shimoda H, Sakata K, Kobayashi S, Ogawa A, Terayama Y. Study of headache after the Great East Japan earthquake in Iwate coast area –comparison with migraineurs and non-migraineurs- part1. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kudo M, Ishibashi Y, Yonezawa H, Shimoda H, Sakata K, Kobayashi S, Ogawa A, Terayama Y. Study of headache after the Great East Japan earthquake in Iwate coast area. –Comparison with migraineurs and non-migraineurs - part 2. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3435] [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: 11/24/2022]
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Nishikawa K, Yoshino S, Morita S, Takahashi T, Sakata K, Nagao J, Nemoto H, Murakami N, Hasegawa H, Shimizu R, Yoshikawa T, Osanai H, Imano M, Naitoh H, Tanaka A, Sakamoto J, Saji S, Oka M. Safety and efficacy of S-1 treatment in elderly patients with advanced or recurrent gastric cancer: A subgroup analysis from the phase III JFMC36-0701 trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Sakata K, Ozawa T, Okuyama Y, Haraguchi R, Tsuchiya T, Horie M, Ashihara T. P2649Not all non-paroxysmal atrial fibrillation drivers are included in complex fractionated electrogram area or low-voltage area: ExTRa Mapping project. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tada H, Okada H, Nakahashi T, Sakata K, Kawashiri M, Nohara A, Mabuchi H, Yamagishi M. P6240Assessments of carotid plaque burden in patients with familial hypercholesterolemia. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sakata K, Gamou T, Kawashiri M, Matsubara T, Ino H, Okeie K, Namura M, Yamagishi M. P1792Impact of baseline high-sensitive C-reactive protein on the regression of coronary atherosclerosis in patients treated with combined lipid and blood pressure-lowering therapy: Insight from MILLION stu. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Takahashi S, Nakamura M, Yonekura Y, Tanaka F, Tanno K, Ohsawa M, Itai K, Omama S, Ishibashi Y, Ogasawara K, Sakata K, Ohta M, Okayama A. P3454A comparison of the predictive ability of cardiovascular biomarkers for requiring long-term care service due to physical and cognitive impairments in an elderly general population. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S. Takahashi
- Iwate Medical University, Division of Cardioangiology, Department of Internal Medicine, Morioka, Japan
| | - M. Nakamura
- Iwate Medical University, Division of Cardioangiology, Department of Internal Medicine, Morioka, Japan
| | - Y. Yonekura
- St. Luke's International University, Graduate School of Nursing Science, Tokyo, Japan
| | - F. Tanaka
- Iwate Medical University, Division of Cardioangiology, Department of Internal Medicine, Morioka, Japan
| | - K. Tanno
- Iwate University Hospital, Department of Hygiene and Preventive Medicine, Iwate, Japan
| | - M. Ohsawa
- Morioka Tsunagi Onsen Hospital, Morioka, Japan
| | - K. Itai
- Morioka University, Department of Nutritional Sciences, Kakizawa, Japan
| | - S. Omama
- Iwate Medical University, Department of Neurosurgery, Morioka, Japan
| | - Y. Ishibashi
- Iwate Medical University, Division of Cardioangiology, Department of Internal Medicine, Morioka, Japan
| | - K. Ogasawara
- Iwate Medical University, Department of Neurosurgery, Morioka, Japan
| | - K. Sakata
- Iwate University Hospital, Department of Hygiene and Preventive Medicine, Iwate, Japan
| | - M. Ohta
- Iwate Health Service Association, Morioka, Japan
| | - A. Okayama
- Research Institute of Strategy for Prevention, Tokyo, Japan
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Sakata K, Okuyama Y, Ozawa T, Haraguchi R, Horie M, Ashihara T. P3979Using large-tip ablation catheter markedly decreases bipolar signal amplitude near spiral wave center but this is not the case with using multi-electrode mapping catheter: A simulation study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tanaka Y, Yoshimuta T, Sakata K, Kawashiri M, Yamagishi M. P5171Sex-related differences in patients with type A acute aortic dissection. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yokawa J, Mori M, Nakanishi C, Sakata K, Okada H, Shimojima M, Yoshida S, Yoshimuta T, Yamagishi M. P3320The hyperacute vessel response after biodegradable-polymer sirolimus-eluting stent implantation in swine model. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sakata K, Ozawa T, Okuyama Y, Haraguchi R, Tsuchiya T, Horie M, Ashihara T. P1718Non-paroxysmal atrial fibrillation wave dynamics were determined by age rather than echocardiographic measurements and BNP: A clinical study using the ExTRa Mapping system. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nakahashi T, Tada H, Sakata K, Tanaka Y, Nomura A, Yakuta Y, Gamou T, Terai H, Horita Y, Ikeda M, Namura M, Takamura M, Kawashiri M, Yamagishi M. P3649Impact of extra-cardiac diseased location on long-term prognosis in patients with acute coronary syndrome who underwent percutaneous coronary intervention. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Eigl R, Steier P, Sakata K, Sakaguchi A. Vertical distribution of 236U in the North Pacific Ocean. J Environ Radioact 2017; 169-170:70-78. [PMID: 28088697 DOI: 10.1016/j.jenvrad.2016.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
The first extensive study on 236U in the North Pacific Ocean has been conducted. The vertical distribution of 236U/238U isotopic ratios and the 236U concentrations were analysed on seven depth profiles, and large variations with depth were found. The range of 236U/238U isotopic ratios was from (0.09 ± 0.03) × 10-10 to (14.1 ± 2.2) × 10-10, which corresponds to 236U concentrations of (0.69 ± 0.24) × 105 atoms/kg and (119 ± 21) × 105 atoms/kg, respectively. The variations in 236U concentrations could mainly be attributed to the different water masses in the North Pacific Ocean and their formation processes. Uranium-236 inventories on the water column of each sampling station were calculated and varied between (3.89 ± 0.08) × 1012 atoms/m2 and (7.03 ± 0.50) × 1012 atoms/m2, which is lower than in former studies on comparable latitudes in the North Atlantic Ocean and the Sea of Japan. The low inventories of 236U found for the North Pacific Ocean in this study can be explained by the lack of additional input sources of artificial radionuclides, apart from global and regional/local fallout. This study expands the use of 236U as oceanographic circulation tracer to yet another ocean basin and shows that this isotope can be used for tracing circulation patterns of water masses in the Pacific Ocean.
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Affiliation(s)
- R Eigl
- Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan.
| | - P Steier
- VERA-Laboratory, Faculty of Physics - Isotope Research, University of Vienna, Währinger Str. 17, 1090 Vienna, Austria
| | - K Sakata
- Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - A Sakaguchi
- Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
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Sakata K, Yoshimura N, Tanabe K, Kito K, Nagase K, Iida H. Prediction of hypotension during spinal anesthesia for elective cesarean section by altered heart rate variability induced by postural change. Int J Obstet Anesth 2017; 29:34-38. [DOI: 10.1016/j.ijoa.2016.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 09/12/2016] [Accepted: 09/17/2016] [Indexed: 10/21/2022]
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Abe T, Tateoka K, Saito Y, Nakazawa T, Yano M, Nakata K, Someya M, Hori M, Sakata K. Method for Converting Cone-Beam CT Values into Hounsfield Units for Radiation Treatment Planning. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/ijmpcero.2017.64032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Eigl R, Steier P, Winkler SR, Sakata K, Sakaguchi A. First study on 236U in the Northeast Pacific Ocean using a new target preparation procedure for AMS measurements. J Environ Radioact 2016; 162-163:244-250. [PMID: 27289064 DOI: 10.1016/j.jenvrad.2016.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 02/22/2016] [Revised: 05/19/2016] [Accepted: 05/23/2016] [Indexed: 06/06/2023]
Abstract
We succeeded in obtaining the depth profile of 236U for a sampling station in the Northeast Pacific Ocean using only one litre of seawater sample from each depth. For this purpose, a new procedure was developed that allowed for the preparation of accelerator mass spectrometry targets for trace uranium using only 100 μg of iron carrier material. The 236U concentrations in water samples from the Northeast Pacific Ocean showed large variations from (9.26 ± 0.42) × 106 atoms/kg at 60 m depth to (0.08 ± 0.02) × 106 atoms/kg at a depth of 3000 m. The high 236U concentrations in surface water reflect the input of 236U by global and local fallout from nuclear weapons tests. The low 236U concentrations in seawater from 1500 m and below are an indicator for the low vertical diffusion of surface water to deeper layers in the North Pacific Ocean. The total inventory of 236U on the water column was (8.35 ± 0.23) × 1012 atoms/m2, which is lower compared to those of other ocean regions solely affected by global fallout on comparable latitudes. This study represents the first dataset for 236U in the Pacific Ocean and shows the possibility of downsizing sample volumes which may help in future applications of 236U as tracer for large ocean areas.
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Affiliation(s)
- R Eigl
- Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
| | - P Steier
- VERA-Laboratory, Faculty of Physics - Isotope Research, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria
| | - S R Winkler
- VERA-Laboratory, Faculty of Physics - Isotope Research, University of Vienna, Währinger Str. 17, 1090, Vienna, Austria; iThembaLABS (Gauteng), National Research Foundation, Private Bag 11, WITS 2050, Johannesburg, South Africa
| | - K Sakata
- Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - A Sakaguchi
- Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
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