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Nakawaza M, Arashi H, Nomura H, Kawada-Watanabe E, Ogiso M, Sekiguchi H, Yamaguchi J, Ogawa H, Hagiwara N. P824The clinical impact of polyunsaturated fatty acid on clinical outcomes in acute coronary syndrome with dyslipidemia: HIJ-PROPER sub-analysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0423] [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
Polyunsaturated fatty acids, especially omega-3 and -6 series, are key essential nutrients that play an important role in humans to maintain cell membranes and function. A recent randomized trial reported that adding eicosapentaenoic acid (EPA) to statins was beneficial to cardiovascular disease patients who had a residual risk factor. Further, several studies have reported that the low baseline value for EPA to arachidonic acid (AA) ratio is related to worse clinical outcome and plaque vulnerability in coronary artery disease patients. However, effects of baseline EPA/AA ratio on clinical outcomes in ACS patients have not been thoroughly evaluated.
Objectives
This study aimed to examine the impact of baseline eicosapentaenoic acid to arachidonic acid (EPA/AA) ratio on clinical outcomes of acute coronary syndrome (ACS) patients and how lipid-lowering therapy affects serum EPA/AA levels in these patients.
Methods
This is a sub-analysis of HIJ-PROPER assessing the effect of aggressive low-density lipoprotein cholesterol (LDL-C)-lowering treatment with pitavastatin+ezetimibe in 1,734 ACS patients with dyslipidemia. Patients were divided into two groups based on EPA/AA level on admission (cut-off: 0.34 μg/mL; median of baseline EPA/AA level) and clinical outcomes were examined.
Results
Percent reduction of LDL-C from baseline to follow-up and mean LDL-C level during follow-up were similar regardless of baseline EPA/AA ratio. In the low EPA/AA group, the Kaplan–Meier estimate for the primary endpoint at 3 years was 27.2% in the pitavastatin+ezetimibe group, compared with 36.6% in the pitavastatin-monotherapy group [hazard ratio (HR), 0.69; 95% confidence interval (CI), 0.52–0.93; P=0.015). However, in the high EPA/AA group, there was no significant reduction in the primary endpoint by pitavastatin+ezetimibe therapy (HR, 0.92; 95% CI, 0.70–1.20; P=0.52).
Conclusions
Aggressive lipid-lowering therapy with ezetimibe had a positive effect on clinical outcomes in the low EPA/AA group of ACS patients with dyslipidemia, but not in the high EPA/AA group. This effect was independent of LDL-C reduction and suggests that EPA/AA measurement on admission in ACS patients contributes to a “personalized” lipid-lowering approach.
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Affiliation(s)
- M Nakawaza
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Nomura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Ogiso
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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Ogido M, Nomura H, Nakawaza M, Kawada-Watanabe E, Sekiguchi H, Arashi H, Yamaguchi J, Ogawa H, Hagiwara N. P830Differences in the usefulness of aggressive lipid-lowering therapy among single-vessel and multi-vessel coronary artery disease patients: HIJ-PROPER sub-study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0429] [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
Acute coronary syndrome (ACS) patients with multi-vessel disease (MVD) are at high risk of recurrent cardiovascular events. Previous study, examining stable atherosclerotic cardiac disease, reported that aggressive lipid-lowering therapy was more beneficial in MVD patients than in single-vessel disease (SVD) patients. However, no report has investigated the effects of aggressive lipid-lowering treatment according to the number of diseased coronary arteries in ACS patients.
Purpose
The purpose of the present study was to elucidate the efficacy of aggressive lipid-lowering therapy in ACS patients with MVD and SVD in modern early invasive strategy era.
Methods
The study population was derived from the HIJ-PROPER study, in which, ACS patients with dyslipidemia were randomized to pitavastatin + ezetimibe therapy (targeting LDL-C less than 70mg/dl) or pitavastatin-monotherapy (targeting LDL-C less than 90mg/dl). In the present study, the treatment efficacy was compared between patients with MVD and SVD. The primary end point was a composite of major advanced cardiovascular events (MACEs), including all-cause death, non-fatal myocardial infarction, non-fatal stroke, and ischemia driven revascularization.
Results
We identified 1702 eligible patients (mean age, 65.6 years; male, 75.6%); 869 patients (51.1%) had MVD and 833 (48.9%) patients had SVD. The rate of acute revascularization was 96.2%. The incidence of MACEs was significantly higher in MVD group compared to SVD group (43.7% vs 25.9%, hazard ratio 1.95, 95% confidence interval 1.65–2.31, p<0.001). In MVD group, there was no significant difference in MACEs between pitavastatin + ezetimibe therapy and pitavastatin-monotherapy group. (43.5% vs. 43.9%, 1.0, 0.82–1.23; p=0.95). However, in SVD group, pitavastatin + ezetimibe therapy showed significantly fewer MACEs than pitavastatin-monotherapy (34.6% vs. 47.4%, 0.72, 0.55–0.94, p=0.02). (Figure)
Conclusion
This study showed that ACS patients with SVD enjoyed significantly greater benefits from pitavastatin + ezetimibe therapy compared with pitavastatin monotherapy, whereas the patients with MVD did not. High rate of revascularization in acute phase of ACS might affect the efficacy of aggressive lipid-lowering therapy and our results in the present study suggest different treatment approach would be necessary in ACS patients with MVD in modern early invasive strategy era.
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Affiliation(s)
- M Ogido
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Nomura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Nakawaza
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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53
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Aoyama D, Morishita T, Yamaguchi J, Shiomi Y, Ikeda H, Tama N, Fukuoka Y, Hasegawa K, Kaseno K, Ishida K, Miyazaki S, Uzui H, Tada H. P6339Sequential organ failure assessment score on admission predicts long-time mortality of the patients with acute heart failure. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0936] [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
Despite the remarkable advances in the treatment options of acute heart failure (HF), prognosis assessment remains an ongoing challenge. Previous studies revealed only a moderate accuracy of models predicting mortality. Sequential Organ Failure Assessment (SOFA) Score are widely used in the intensive care unit (ICU) to predict outcome and predicted higher long-time mortality in unselected patients in cardiac ICU. In addition, the American Heart Association Get With the Guidelines–Heart Failure (GWTG-HF) risk score allows for risk stratification of 30-day outcome for patients hospitalized with HF. The purpose of this study was to evaluate whether SOFA score on admission is useful for long-time mortality prediction in acute HF patients and also to assess the discriminative performance as compared with GWTG-HF risk score.
Methods
This was a single-centre, retrospective cohort study. Between January 2007 and December 2016, we screened eligible 661 consecutive patients with acute HF administered at our hospital. SOFA score on admission of 294 patients was able to calculate retrospectively. We enrolled 269 patients who could complete follow up evaluation for more than 1 year. Endpoint was all-cause mortality after admission. Additive information of SOFA score was evaluated by area under the curve (AUC), net reclassification improvement (NRI), integrated discrimination improvement (IDI) and decision curve analysis (DCA).
Results
The 269 patients were included in this study (78.5±10.9 years; 136 men; left ventricular ejection fraction [EF], 49.8±16.6%) during a mean follow-up of 32.1±22.3 months. Patients with all-cause death had higher SOFA score (4.2±2.3 versus 2.8±1.8, p<0.001; AUC, 0.689) and GWTG-HF risk score (44.0±7.6 versus 38.1±7.9, P<0.001, AUC, 0.692).
Kaplan-Meier survival analysis demonstrated higher SOFA scores (P<0.001) and GWTG-HF risk scores (P<0.001) appears to be related to increase probabilities of all cause death. A multivariate Cox proportional hazard model were made with adjustment for SOFA score, GWTG-HF risk score, age, gender and ejection fraction. As a result, SOFA score (hazard ratio [HR] 1.227; 95% confidence interval [CI], 1.130 to 1.326; P<0.001), GWTG-HF (HR, 1.054; 95% CI, 1.029 to 1.078; P<0.001) and age (HR, 1.069; 95% CI 1.048 to 1.092; P<0.001) were independent predictors of all cause death and HR of SOFA score was the highest in these parameters. Incorporating SOFA score into GWTG-HF score yielded a significant NRI (0.528 (95% CI 0.291 to 0.765) and IDI (0.046 (95% CI 0.020 to 0.072). In DCA, compared with the reference model, the net benefit for SOFA score model was greater across the range of threshold probabilities.
Conclusions
The SOFA score, simple and validated mortality risk score can predict long-term all-cause mortality in patients with acute HF. Discriminative performance metrics such as NRI, IDI and DCA were improved on incorporation of the SOFA score for prediction of mortality.
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Affiliation(s)
- D Aoyama
- University of Fukui Hospital, Fukui, Japan
| | | | | | - Y Shiomi
- University of Fukui Hospital, Fukui, Japan
| | - H Ikeda
- University of Fukui Hospital, Fukui, Japan
| | - N Tama
- University of Fukui Hospital, Fukui, Japan
| | - Y Fukuoka
- University of Fukui Hospital, Fukui, Japan
| | - K Hasegawa
- University of Fukui Hospital, Fukui, Japan
| | - K Kaseno
- University of Fukui Hospital, Fukui, Japan
| | - K Ishida
- University of Fukui Hospital, Fukui, Japan
| | - S Miyazaki
- University of Fukui Hospital, Fukui, Japan
| | - H Uzui
- University of Fukui Hospital, Fukui, Japan
| | - H Tada
- University of Fukui Hospital, Fukui, Japan
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54
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Oyabu K, Jujo K, Konami Y, Otsuki H, Tanaka K, Isomura S, Domoto S, Yamaguchi J, Niinami H, Hagiwara N. P5577Preoperative transaortic pressure gradient predicts renal functional improvement after transcatheter aortic valve implantation in patients with chronic kidney disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0521] [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
Introduction
Transcatheter aortic valve implantation (TAVI) theoretically increases renal blood flow through increasing cardiac output by relieving aortic valvular obstruction of blood flow from left ventricle, resulting in a renal functional recovery in patients with severe aortic valve stenosis (AS). However, procedural steps of TAVI including contrast use potentially damages renal medulla and may deteriorate renal function.
Purpose
The aim of this study was to investigate renal functional change and clarify preoperative predictors for renal functional improvement after TAVI in chronic kidney disease (CKD) patients with severe AS.
Methods
A total of 88 consecutive severe AS patients with CKD (grade >3) who underwent TAVI from 2015 to 2018 was enrolled in this observational study. They were divided into two groups depending on their renal functional improvement after TAVI that was defined as more than 10% increase in estimated glomerular filtration rate (eGFR) at discharge from their preoperative level.
Results
Among the whole candidates, 49 patients (55.7%) were improved their renal function. Patients with the lowest preoperative eGFR achieved the highest increase in eGFR after TAVI (CKD grade >4: +22.7±23.7%, Figure). Patients in the Improved group had lower hemoglobin level, higher mean transaortic pressure gradient (TAPG), and higher aortic valve gradient before TAVI, compared to those in the Non-improved group. However, contrast volume during the procedure was not significantly different between the groups. Multivariate logistic regression analysis revealed that high mean TAPG and low left ventricular ejection fraction (LVEF) before TAVI were independent predictors for the improvement of renal function (odds ratio (OR): 1.04, 95% confidence interval (CI): 1.00–1.08; OR: 0.94, 95% CI: 0.89–0.99, respectively), even after the adjustment of baseline eGFR level and hemoglobin level that were statistically significant on univariate logistic regression analysis. Receiver Operating Characteristic (ROC) curve showed the cut-off level of preoperative mean TAPG in renal functional improvement after TAVI as 47.0 mmHg (Sensitivity: 47.9%, Specificity: 79.5%, area under the curve: 0.62).
Correlation between CKDgrade and ΔeGFR
Conclusions
Preoperative high mean TAPG may predict renal functional improvement after TAVI in patients with deteriorated renal function. This non-invasive predictor may help clinicians to consider to perform TAVI in a challenging case with severe CKD.
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Affiliation(s)
- K Oyabu
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - Y Konami
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Otsuki
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S Isomura
- Tokyo Womens Medical University, Cardiovascular Surgery, Tokyo, Japan
| | - S Domoto
- Tokyo Womens Medical University, Cardiovascular Surgery, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H Niinami
- Tokyo Womens Medical University, Cardiovascular Surgery, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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Yamaguchi T, Nozato T, Miwa N, Sagawa Y, Watanabe K, Nagata Y, Miyazaki R, Mitsui K, Nagase M, Nagamine T, Yamaguchi J, Masuda R, Kaneko M, Hara N, Ashikaga T. Impact of the preprocedural nutrition status on the clinical outcomes of patients after pacemaker implantation for bradycardia. J Cardiol 2019; 74:284-289. [DOI: 10.1016/j.jjcc.2019.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 02/05/2019] [Accepted: 02/20/2019] [Indexed: 01/18/2023]
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56
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Mizuochi M, Chiba N, Yamaguchi J, Matsuzaki M, Mawatari T, Nomura Y, Sugita A, Sakurai A, Kinoshita K. MON-PO616: The Significance of the Conut Score for Measurement in Trauma Patients. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32449-5] [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: 11/26/2022]
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57
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Arae T, Morita K, Imahori R, Suzuki Y, Yasuda S, Sato T, Yamaguchi J, Chiba Y. Identification of Arabidopsis CCR4-NOT Complexes with Pumilio RNA-Binding Proteins, APUM5 and APUM2. Plant Cell Physiol 2019; 60:2015-2025. [PMID: 31093672 DOI: 10.1093/pcp/pcz089] [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] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
CCR4/CAF1 are widely conserved deadenylases in eukaryotes. They form a large complex that includes NOT1 as a scaffold protein and various NOT proteins that are core components of multiple levels of gene expression control. The CCR4-NOT complex also contains several RNA-binding proteins as accessory proteins, which are required for target recognition by CCR4/CAF1 deadenylases. AtCCR4a/b, orthologs of human CCR4 in Arabidopsis, have various physiological effects. AtCCR4 isoforms are likely to have specific target mRNAs related to each physiological effect; however, AtCCR4 does not have RNA-binding capability. Therefore, identifying factors that interact with AtCCR4a/b is indispensable to understand its function as a regulator of gene expression, as well as the target mRNA recognition mechanism. Here, we identified putative components of the AtCCR4-NOT complex using co-immunoprecipitation in combination with mass spectrometry using FLAG-tagged AtCCR4b and subsequent verification with a yeast two-hybrid assay. Interestingly, four of 11 AtCAF1 isoforms interacted with both AtCCR4b and AtNOT1, whereas two isoforms interacted only with AtNOT1 in yeast two-hybrid assays. These results imply that Arabidopsis has multiple CCR4-NOT complexes with various combinations of deadenylases. We also revealed that the RNA-binding protein Arabidopsis Pumilio 5 and 2 interacted with AtCCR4a/b in the cytoplasm with a few foci.
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Affiliation(s)
- Toshihiro Arae
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Kotone Morita
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Riko Imahori
- School of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Yuya Suzuki
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Shigetaka Yasuda
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Takeo Sato
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
- Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Junji Yamaguchi
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
- Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
| | - Yukako Chiba
- Graduate School of Life Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
- Faculty of Science, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Japan
- JST PRESTO, Kawaguchi, Japan
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58
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Otsuka S, Ebata T, Yokoyama Y, Igami T, Mizuno T, Yamaguchi J, Onoe S, Watanabe N, Shimoyama Y, Nagino M. Benign hilar bile duct strictures resected as perihilar cholangiocarcinoma. Br J Surg 2019; 106:1504-1511. [PMID: 31386198 DOI: 10.1002/bjs.11257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/07/2019] [Accepted: 05/10/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Differentiation between perihilar cholangiocarcinoma (PHCC) and benign strictures is frequently difficult. The aim of this study was to investigate the incidence and long-term outcome of patients with tumours resected because of suspicion of PHCC, which ultimately turned out to be benign (malignancy masquerade). METHODS Patients who underwent surgical resection with a diagnosis of PHCC between 2001 and 2016 were reviewed retrospectively. RESULTS Among 707 consecutive patients, 685 had PHCC and the remaining 22 (3·1 per cent) had benign biliary stricture. All patients with benign disease underwent major hepatectomy, with no deaths. Preoperative histological assessment using bile duct biopsy or aspiration cytology had a high specificity (90 per cent), low sensitivity (62 per cent) and unsatisfactory accuracy (63 per cent). Despite the increasing use of histological assessment, the incidence of benign strictures resected did not decrease over time, being 0·9 per cent in 2001-2004, 4·0 per cent in 2005-2008, 3·8 per cent in 2009-2012 and 2·9 per cent in 2013-2016. The final pathology of benign strictures included IgG4-related sclerosing cholangitis (9 patients), hepatolithiasis (4), granulomatous cholangitis (3), non-specific chronic cholangitis (3), benign strictures after cholecystectomy (2), and a benign stricture possibly caused by parasitic infection (1). The 10-year overall survival rate for the 22 patients with benign stricture was 87 per cent, without recurrence of biliary stricture. CONCLUSION The incidence of benign strictures resected as PHCC as a proportion of all resections was relatively low, at 3·1 per cent. Currently, unnecessary surgery for suspected PHCC is unavoidable.
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Affiliation(s)
- S Otsuka
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pathology and Clinical Laboratories, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Ebata
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Yokoyama
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Igami
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Mizuno
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - J Yamaguchi
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Onoe
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Watanabe
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Shimoyama
- Department of Pathology and Clinical Laboratories, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Nagino
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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59
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Donegan JJ, Boley AM, Yamaguchi J, Toney GM, Lodge DJ. Modulation of extrasynaptic GABA A alpha 5 receptors in the ventral hippocampus normalizes physiological and behavioral deficits in a circuit specific manner. Nat Commun 2019; 10:2819. [PMID: 31249307 PMCID: PMC6597724 DOI: 10.1038/s41467-019-10800-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 05/29/2019] [Indexed: 12/27/2022] Open
Abstract
Hippocampal hyperactivity is correlated with psychosis in schizophrenia patients and likely attributable to deficits in GABAergic signaling. Here we attempt to reverse this deficit by overexpression of the α5-GABAA receptor within the ventral hippocampus (vHipp). Indeed, this is sufficient to normalize vHipp activity and downstream alterations in dopamine neuron function in the MAM rodent model. This approach also attenuated behavioral deficits in cognitive flexibility. To understand the specific pathways that mediate these effects, we used chemogenetics to manipulate discrete projections from the vHipp to the nucleus accumbens (NAc) or prefrontal cortex (mPFC). We found that inhibition of the vHipp-NAc, but not the vHipp-mPFC pathway, normalized aberrant dopamine neuron activity. Conversely, inhibition of the vHipp-mPFC improved cognitive function. Taken together, these results demonstrate that restoring GABAergic signaling in the vHipp improves schizophrenia-like deficits and that distinct behavioral alterations are mediated by discrete projections from the vHipp to the NAc and mPFC.
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Affiliation(s)
- J J Donegan
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA.
| | - A M Boley
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA
| | - J Yamaguchi
- Department of Cellular and Integrative Physiology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA
| | - G M Toney
- Department of Cellular and Integrative Physiology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA
| | - D J Lodge
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, 78229, USA
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60
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Inaba O, Yamauchi Y, Sekigawa M, Miwa N, Yamaguchi J, Nagata Y, Obayashi T, Miyamoto T, Kamata T, Isobe M, Goya M, Hirao K. Atrial fibrillation type matters: greater infarct volume and worse neurological defects seen in acute cardiogenic cerebral embolism due to persistent or permanent rather than paroxysmal atrial fibrillation. Europace 2019; 20:1591-1597. [PMID: 29244081 DOI: 10.1093/europace/eux346] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 10/27/2017] [Indexed: 11/12/2022] Open
Abstract
Aims Some studies have shown that the type of atrial fibrillation (AF), whether paroxysmal AF (PAF) or persistent or permanent AF (PeAF), affects the incidence of ischaemic stroke. This study sought to determine the relationship between the AF pattern and the severity and brain volume of infarction in an AF population including transient ischaemic attack (TIA) patients. Methods and results This was a retrospective observational study. We studied 161 consecutive patients who were admitted to our stroke care unit with cardiogenic embolism or TIA related to non-valvular AF (age 79 ± 9.5, 78 females, and 87 PAF patients). We evaluated the differences in severity and infarct volume between the types of AF. Additionally, we divided the patients into three groups according to severe stroke (n = 38), TIA (n = 28), and those who were neither (stroke, n = 95) for the assessment of the predictors of severe stroke and TIA. Persistent or permanent atrial fibrillation patients with acute cardiogenic stroke or TIA had worse peak National Institute of Health Stroke Scale (NIHSS) scores [PAF median 4 (range 3-14), PeAF 17 (5.8-25); P < 0.0001] and worse NIHSS scores at discharge [PAF 2.0 (1-7), PeAF 11 (3-22); P < 0.0001]. Their infarct brain volume assessed by computed tomography or magnetic resonance imaging was also larger [PAF 4.4 (1.1-32) mL, PeAF 64 (6.9-170) mL; P < 0.0001]. Multivariate analysis of severe stroke vs. non-severe stroke patients showed that having PeAF was the only independent predictor of severe stroke [odds ratio (OR) 4.27, 95% confidence interval (CI) 1.91-10.2; P = 0.0003]. Comparison of TIA vs. non-TIA patients showed that PeAF (OR 0.120, 95% CI 0.0230-0.444; P = 0.0008) and anticoagulant use (OR 8.24, 95% CI 2.15-40.8; P = 0.0018) were independent predictors of TIA. Conclusion Cardiogenic emboli due to non-valvular PeAF are associated with a worse acute clinical course and greater volume of infarction than those due to PAF.
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Affiliation(s)
- Osamu Inaba
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan.,Department of Cardiology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, Japan.,Heart Rhythm Center, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, Japan
| | - Yasuteru Yamauchi
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Masahiro Sekigawa
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Naoyuki Miwa
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Junji Yamaguchi
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Yasutoshi Nagata
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Toru Obayashi
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Takamichi Miyamoto
- Department of Cardiology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Tomoyuki Kamata
- Department of Neurology, Musashino Red Cross Hospital, Kyonan-cho 1-26-1, Musashino-shi, Tokyo, Japan
| | - Mitsuaki Isobe
- Department of Cardiology, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, Japan
| | - Masahiko Goya
- Heart Rhythm Center, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, Japan
| | - Kenzo Hirao
- Heart Rhythm Center, Tokyo Medical and Dental University, Yushima 1-5-45, Bunkyo-ku, Tokyo, Japan
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Yamaguchi J, Nagata Y, Yamauchi Y, Hirao K. New implications for the recurrence mechanism of an upper septal ventricular tachycardia: a case report. Eur Heart J Case Rep 2019; 3:5498062. [PMID: 31449630 PMCID: PMC6601162 DOI: 10.1093/ehjcr/ytz079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/28/2019] [Accepted: 04/23/2019] [Indexed: 11/30/2022]
Abstract
Background Verapamil-sensitive fascicular ventricular tachycardia (VT) is the most common type of idiopathic left ventricular tachycardia, and it is divided into three types. Upper septal ventricular tachycardia (US-VT) is likely in patients with prior episodes of left posterior fascicular (LPF)-VT ablation, however, little is known about the recurrence mechanism of US-VT. Case summary A 53-year-old man had an US-VT after two catheter ablation sessions for a common idiopathic LPF-VT. The US-VT was successfully treated by ablating the proximal site of the LPF without making any further branch or fascicular block. This successful ablation point corresponded completely with the earliest pre-systolic potential (P2) site of the LPF-VT during the 1st session of catheter ablation. Discussion An US-VT recurrence could occur if a critical slow conduction is not affected by the catheter ablation. This recurrence might be the result of changing the re-entrant circuit after damage to the LPF. In order to eliminate the LPF-VT and prevent an US-VT recurrence, the earliest P2 site should be investigated carefully and ablated sufficiently.
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Affiliation(s)
- Junji Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo, Japan
| | - Yasutoshi Nagata
- Department of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo, Japan
| | - Yasuteru Yamauchi
- Heart Center, Japan Red Cross Yokohama City Bay Hospital, 3-12-1, Shinyamashita, Naka-ku, Yokohama City, Kanagawa, Japan
| | - Kenzo Hirao
- Heart Rhythm Center, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan
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62
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Jin H, Seki T, Yamaguchi J, Fujiwara H. Prepatterning of Papilio xuthus caterpillar camouflage is controlled by three homeobox genes: clawless, abdominal-A, and Abdominal-B. Sci Adv 2019; 5:eaav7569. [PMID: 30989117 PMCID: PMC6457947 DOI: 10.1126/sciadv.aav7569] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 02/14/2019] [Indexed: 06/02/2023]
Abstract
Color patterns often function as camouflage to protect insects from predators. In most swallowtail butterflies, younger larvae mimic bird droppings but change their pattern to mimic their host plants during their final molt. This pattern change is determined during the early fourth instar by juvenile hormone (JH-sensitive period), but it remains unclear how the prepatterning process is controlled. Using Papilio xuthus larvae, we performed transcriptome comparisons to identify three camouflage pattern-associated homeobox genes [clawless, abdominal-A, and Abdominal-B (Abd-B)] that are up-regulated during the JH-sensitive period in a region-specific manner. Electroporation-mediated knockdown of each gene at the third instar caused loss or change of original fifth instar patterns, but not the fourth instar mimetic pattern, and knockdown of Abd-B after the JH-sensitive period had no effect on fifth instar patterns. These results indicate the role of these genes during the JH-sensitive period and in the control of the prepatterning gene network.
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63
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Kamishima K, Ogawa H, Jujo K, Yamaguchi J, Hagiwara N. Relationships between blood pressure lowering therapy and cardiovascular events in hypertensive patients with coronary artery disease and type 2 diabetes mellitus: The HIJ-CREATE sub-study. Diabetes Res Clin Pract 2019; 149:69-77. [PMID: 30735770 DOI: 10.1016/j.diabres.2019.01.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/10/2019] [Accepted: 01/30/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The effects of intensive blood pressure (BP) lowering for hypertensive patients with coronary artery disease (CAD) and diabetes mellitus on their clinical outcomes have not been fully evaluated. The aim was to explore the optimal systolic BP target in such patients in a substudy of a prospective, randomized trial. METHODS Of a total of 2049 hypertensive patients with CAD who were enrolled in the HIJ-CREATE study, type 2 diabetes was diagnosed in 780 (38.1%). Titration of antihypertensive agents was performed to reach the target BP of <130/85 mmHg. The primary endpoint was the occurrence of a first major adverse cardiovascular event (MACE). Achieved BP was defined as the mean value of systolic BP in patients who did not develop MACEs and as the mean value of systolic BP prior to MACEs in those who developed MACEs during follow-up. RESULTS During a median follow-up of 4.2 years, the primary outcome occurred in 259 (33.2%) diabetic patients and in 293 (23.1%) non-diabetic patients (p < 0.0001). The diabetic patients were divided into quartiles based on the mean systolic BP during follow-up. The relationships between achieved BP and the incidence of MACEs did not follow a J-shaped curve. Intensive systolic BP lowering to less than 120 mmHg did not correlate with an increased risk of MACEs. CONCLUSIONS Our results suggest that the intensive BP lowering may not impair patients' clinical courses even in a high-risk population. The establishment of an optimal management strategy for hypertensive patients with diabetes and CAD is essential.
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Affiliation(s)
- K Kamishima
- Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical University, Japan
| | - H Ogawa
- Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical University, Japan.
| | - K Jujo
- Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical University, Japan
| | - J Yamaguchi
- Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical University, Japan
| | - N Hagiwara
- Department of Cardiology, The Heart Institute of Japan, Tokyo Women's Medical University, Japan
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64
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Mizuno T, Ebata T, Yokoyama Y, Igami T, Yamaguchi J, Onoe S, Watanabe N, Ando M, Nagino M. Major hepatectomy with or without pancreatoduodenectomy for advanced gallbladder cancer. Br J Surg 2019; 106:626-635. [PMID: 30762874 DOI: 10.1002/bjs.11088] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 11/16/2018] [Accepted: 11/22/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND The indications for major hepatectomy for gallbladder cancer either with or without pancreatoduodenectomy remain controversial. The clinical value of these extended procedures was evaluated in this study. METHODS Patients who underwent major hepatectomy for gallbladder cancer between 1996 and 2016 were identified from a prospectively compiled database. Postoperative outcomes and overall survival were compared between patients undergoing major hepatectomy alone or combined with pancreatoduodenectomy (HPD). RESULTS Seventy-nine patients underwent major hepatectomy alone and 38 patients had HPD. The patients who underwent HPD were more likely to have T4 disease (P < 0·001), nodal metastasis (P = 0·015) and periaortic nodal metastasis (P = 0·006), but were less likely to receive adjuvant therapy (P = 0·006). HPD was associated with a high incidence of grade III or higher complications (P = 0·002) and death (P = 0·037). Overall survival was longer in patients who underwent major hepatectomy alone than in patients who underwent HPD (median survival time 32 versus 10 months; P < 0·001). In multivariable analysis, surgery in the early period (1996-2006) (P = 0·002), pathological T4 disease (P = 0·005) and distant metastasis (P < 0·001) were associated with shorter overall survival, and cystic duct tumour (P = 0·002) with longer overall survival. CONCLUSION Major hepatectomy alone for gallbladder cancer contributes to favourable overall survival with low morbidity and mortality, whereas HPD is associated with poor overall survival and high morbidity and mortality rates. HPD may eradicate locally spreading gallbladder cancer; however, the indication for the procedure is questioned from an oncological viewpoint.
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Affiliation(s)
- T Mizuno
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Ebata
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Yokoyama
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Igami
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - J Yamaguchi
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - S Onoe
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - N Watanabe
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - M Ando
- Data Coordinating Centre, Department of Advanced Medicine, Nagoya University Hospital, Nagoya, Japan
| | - M Nagino
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Luo Y, Aoyama S, Fukao Y, Chiba Y, Sato T, Yamaguchi J. Involvement of the membrane-localized ubiquitin ligase ATL8 in sugar starvation response in Arabidopsis. Plant Biotechnol (Tokyo) 2019; 36:107-112. [PMID: 31768111 PMCID: PMC6847778 DOI: 10.5511/plantbiotechnology.19.0328a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 03/28/2019] [Indexed: 05/11/2023]
Abstract
As major components of the ubiquitin system, ubiquitin ligases mediate the transfer of ubiquitin to specific target substrates, thereby playing important roles in regulating a wide range of cellular processes. The Arabidopsis Tóxicos en Levadura (ATL) family is a group of plant-specific RING-type ubiquitin ligases with N-terminal transmembrane-like domains. To date, 91 ATL isoforms have been identified in the Arabidopsis genome, with some reported to regulate plant responses to environmental stresses. However, the functions of most ATLs remain unclear. This study showed that ATL8 is a sugar starvation response gene and that ATL8 expression was significantly increased by sugar starvation conditions but repressed by exogenous sugar supply. The ATL8 protein was found to possess ubiquitin ligase activity in vitro and to localize to membrane-bound compartments in plant cells. In addition, Starch Synthase 4 was identified as a putative interactor with ATL8, suggesting that ATL8 may be involved in modulating starch accumulation in response to sugar availability. These findings suggest that ATL8 functions as a membrane-localized ubiquitin ligase likely to be involved in the adaptation of Arabidopsis plants to sugar starvation stress.
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Affiliation(s)
- Yongming Luo
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Shoki Aoyama
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Yoichiro Fukao
- Department of Bioinformatics, College of Life Sciences, Ritsumeikan University, Shiga 525-8577, Japan
| | - Yukako Chiba
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
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Yamaguchi T, Miyamoto T, Sekigawa M, Watanabe K, Hijikata S, Yamaguchi J, Iwai T, Sagawa Y, Miyazaki R, Masuda R, Miwa N, Hara N, Nagata Y, Obayashi T, Nozato T. Early Transfer of Patients with Acute Heart Failure from a Core Hospital to Collaborating Hospitals and Their Prognoses. Int Heart J 2018; 59:1026-1033. [DOI: 10.1536/ihj.17-449] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/18/2022]
Affiliation(s)
| | | | | | - Keita Watanabe
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | | | - Junji Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | - Takamasa Iwai
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | - Yuichiro Sagawa
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | | | - Ryo Masuda
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | - Naoyuki Miwa
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | - Nobuhiro Hara
- Department of Cardiology, Japanese Red Cross Musashino Hospital
| | | | - Toru Obayashi
- Department of Cardiology, Japanese Red Cross Musashino Hospital
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Morishita T, Uzui H, Ishida K, Kaseno K, Miyazaki S, Fukuoka Y, Ikeda H, Tama N, Shiomi Y, Yamaguchi J, Sato Y, Aoyama D, Ishikawa E, Miyahara K, Tada H. P4730Associations of cachexia and prognosis in patients with heart failure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - H Uzui
- University of Fukui Hospital, Fukui, Japan
| | - K Ishida
- University of Fukui Hospital, Fukui, Japan
| | - K Kaseno
- University of Fukui Hospital, Fukui, Japan
| | - S Miyazaki
- University of Fukui Hospital, Fukui, Japan
| | - Y Fukuoka
- University of Fukui Hospital, Fukui, Japan
| | - H Ikeda
- University of Fukui Hospital, Fukui, Japan
| | - N Tama
- University of Fukui Hospital, Fukui, Japan
| | - Y Shiomi
- University of Fukui Hospital, Fukui, Japan
| | | | - Y Sato
- University of Fukui Hospital, Fukui, Japan
| | - D Aoyama
- University of Fukui Hospital, Fukui, Japan
| | - E Ishikawa
- University of Fukui Hospital, Fukui, Japan
| | - K Miyahara
- University of Fukui Hospital, Fukui, Japan
| | - H Tada
- University of Fukui Hospital, Fukui, Japan
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Otsuki H, Jujo K, Tanaka K, Okai I, Dohi T, Okazaki S, Kawashima H, Nakashima M, Nara Y, Kyono H, Yamaguchi J, Miyauchi K, Daida H, Kozuma K, Hagiwara N. P3587Gender difference in long-term clinical outcomes after rotational atherectomy in severely calcified coronary stenoses - From J2T multicenter registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3587] [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)
- H Otsuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Jujo
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Tanaka
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - I Okai
- Juntendo University, Cardiology, Tokyo, Japan
| | - T Dohi
- Juntendo University, Cardiology, Tokyo, Japan
| | - S Okazaki
- Juntendo University, Cardiology, Tokyo, Japan
| | | | | | - Y Nara
- Teikyo University, Cardiology, Tokyo, Japan
| | - H Kyono
- Teikyo University, Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Miyauchi
- Juntendo University, Cardiology, Tokyo, Japan
| | - H Daida
- Juntendo University, Cardiology, Tokyo, Japan
| | - K Kozuma
- Teikyo University, Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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Sekiguchi H, Yoshimura A, Fukushima T, Suzuki K, Ogiso M, Kawada-Watanabe E, Arashi H, Yamaguchi J, Ogawa H, Hagiwara N. P6242Simple risk score for predicting secondary cardiovascular events in ACS patients undergoing contemporary aggressive lipid-lowering management for dyslipidaemia: a sub-analysis of the HIJ-PROPER study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - A Yoshimura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - T Fukushima
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Suzuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Ogiso
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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Yamaguchi T, Hijikata S, Nozato T, Masuda R, Nishimura K, Sumita Y, Yamaguchi J, Nakai M. 4069Endovascular repair versus surgical repair in Japanese patients with ruptured aortic aneurysms: a Japanese nationwide study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4069] [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 Hijikata
- Musashino Red Cross Hospial, Tokyo, Japan
| | - T Nozato
- Musashino Red Cross Hospial, Tokyo, Japan
| | - R Masuda
- Musashino Red Cross Hospial, Tokyo, Japan
| | - K Nishimura
- National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Y Sumita
- National Cerebral and Cardiovascular Center, Osaka, Japan
| | | | - M Nakai
- National Cerebral and Cardiovascular Center, Osaka, Japan
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71
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Sagawa Y, Nagata Y, Yamaguchi T, Iwai T, Yamaguchi J, Hijikata S, Watanabe K, Masuda R, Miyazaki R, Miwa N, Sekigawa M, Hara N, Nozato T, Hirao K. Comparison of direct oral anticoagulants and warfarin regarding midterm adverse events in patients with atrial fibrillation undergoing catheter ablation. J Arrhythm 2018; 34:428-434. [PMID: 30167014 PMCID: PMC6111475 DOI: 10.1002/joa3.12079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 05/05/2018] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Oral anticoagulants, including direct oral anticoagulants (DOACs), are usually required in atrial fibrillation (AF) patients who are at a high risk of thromboembolism (TE), even if they had undergone catheter ablation (CA). Although several studies have reported the safety and efficacy of DOACs around CA in AF patients, there are only limited data regarding the midterm incidence of TE and bleeding complications post-CA among AF patients treated with warfarin or DOACs. METHODS We studied 629 AF patients (mean age: 65.3 ± 10.3 years; 442 men) undergoing CA, to calculate the midterm incidence of TE and bleeding complications associated with warfarin or DOACs. RESULTS In total, 292 patients used warfarin and 337 used DOACs (dabigatran: 90 patients; rivaroxaban: 137; and apixaban: 110). At baseline, the CHA2DS2-VASc and HAS-BLED scores were similar between the 2 groups. During a median follow-up period of 7 months, no TE complications occurred. The warfarin group had a significantly higher bleeding event rate than did the DOACs group (all bleeding complications: 32 [11.0%] vs 15 [4.5%], respectively, P = .002). The rate of all bleeding complications was significantly higher in the warfarin group than in the DOACs group (10.1% vs 3.7%, respectively, at 10 months; P = .024). In Cox proportional hazards modeling, DOAC use was significantly associated with a decreased risk of bleeding (adjusted hazard ratio: 0.497; 95% confidence interval: 0.261-0.906, P = .022). CONCLUSIONS Direct oral anticoagulant use in AF patients undergoing CA may be associated with a similar risk of TE as warfarin but is associated with a lower risk of bleeding.
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Affiliation(s)
- Yuichiro Sagawa
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Yasutoshi Nagata
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Tetsuo Yamaguchi
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Takamasa Iwai
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Junji Yamaguchi
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Sadahiro Hijikata
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Keita Watanabe
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Ryo Masuda
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Ryoichi Miyazaki
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Naoyuki Miwa
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Masahiro Sekigawa
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Nobuhiro Hara
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Toshihiro Nozato
- Department of CardiologyJapanese Red Cross Musashino HospitalTokyoJapan
| | - Kenzo Hirao
- Department of Cardiovascular MedicineTokyo Medical and Dental UniversityTokyoJapan
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Sekiguchi H, Yoshimura A, Fukushima T, Suzuki K, Ogiso M, Kawada-Watanabe E, Arashi H, Yamaguchi J, Ogawa H, Hagiwara N. P2531Comparison of risk factors for cardiovascular outcomes between patients with and without diabetes: results from the HIJ-PROPER Study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H Sekiguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - A Yoshimura
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - T Fukushima
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K Suzuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - M Ogiso
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - E Kawada-Watanabe
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - J Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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73
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Hijikata S, Miyamoto T, Yamaguchi T, Yamaguchi J, Iwai T, Watanabe K, Sagawa Y, Masuda R, Miyazaki R, Miwa N, Hara N, Nagata Y, Nozato T. Hemorrhagic shock due to branch injury of the left internal thoracic artery two days after pericardiocentesis. J Cardiol Cases 2018; 18:5-8. [DOI: 10.1016/j.jccase.2018.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 02/03/2018] [Accepted: 02/28/2018] [Indexed: 11/26/2022] Open
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Sanagi M, Lu Y, Aoyama S, Morita Y, Mitsuda N, Ikeda M, Ohme-Takagi M, Sato T, Yamaguchi J. Sugar-responsive transcription factor bZIP3 affects leaf shape in Arabidopsis plants. Plant Biotechnol (Tokyo) 2018; 35:167-170. [PMID: 31819719 PMCID: PMC6879397 DOI: 10.5511/plantbiotechnology.18.0410a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 04/10/2018] [Indexed: 05/20/2023]
Abstract
Sugars are essential for plant metabolism, growth and development. Plants must therefore manage their growth and developmental processes in response to sugar availability. Sugar signaling pathways constitute a complicated molecular network and are associated with global transcriptional regulation. However, the molecular mechanisms underlying sugar signaling remain largely unclear. This study reports that the protein basic-region leucine zipper 3 (bZIP3) is a novel sugar-responsive transcription factor in Arabidopsis plants. The expression of bZIP3 was rapidly repressed by sugar. Genetic analysis indicated that bZIP3 expression was modulated by the SNF1-RELATED KINASE 1 (SnRK1) pathway. Moreover, transgenic plants overexpressing bZIP3 and dominant repressor form bZIP3-SRDX showed aberrant shaped cotyledons with hyponastic bending. These findings suggest that bZIP3 plays a role in plant responses to sugars and is also associated with leaf development.
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Affiliation(s)
- Miho Sanagi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Yu Lu
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Shoki Aoyama
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Yoshie Morita
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan
| | - Miho Ikeda
- Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
| | - Masaru Ohme-Takagi
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan
- Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
- E-mail: Tel & Fax: +81-11-706-2737
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75
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Inaba O, Nagata Y, Sekigawa M, Miwa N, Yamaguchi J, Miyamoto T, Goya M, Hirao K. Impact of impedance decrease during radiofrequency current application for atrial fibrillation ablation on myocardial lesion and gap formation. J Arrhythm 2018; 34:247-253. [PMID: 29951139 PMCID: PMC6009992 DOI: 10.1002/joa3.12056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 03/18/2018] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The clinical impact of a decrease in impedance during radiofrequency catheter ablation (RFCA) has not been fully clarified. The aim of the study was to analyze the impact of impedance decrease and to determine its optimal cutoff value during RFCA. METHODS We evaluated 34 consecutive patients (total 3264 lesions, mean age 66 ± 8.7 years, 10 females) who underwent their first ablation for atrial fibrillation (AF). The impedance decrease, average contact force (CF), application time, force-time integral (FTI), product of impedance decrease and application time (PIT), and the product of impedance decrease and FTI (PIFT) were measured for all lesions. Levels of cardiac troponin I (TrpI) were measured for assessment of myocardial injury. The incidence of intraprocedural pulmonary vein-left atrium reconnection or dormant conduction (reconnection) was determined. The relationships between the ablation parameters and the increase in TrpI (ΔTrpI) were evaluated. The predictive value of the parameters for reconnection was assessed using receiver operating characteristic (ROC) curve analysis. RESULTS Reconnection was detected in 18 patients. Average FTI and PIT were significantly correlated with ΔTrpI (FTI: r2 = .19, P = .0090, PIT: r2 = .21, P = .0058). PIFT was correlated with ΔTrpI and was the best of the three indexes (PIFT: r2 = .29, P = .0010). In ROC curve analysis, the area under the curve for predicting reconnection was 0.71 and the optimal cutoff value was 5200 for PIFT (sensitivity 78%, specificity 63%). CONCLUSION The combination of CF and a decrease in impedance could be important in the evaluation of myocardial lesions and reconnection during RFCA.
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Affiliation(s)
- Osamu Inaba
- Department of CardiologyMusashino Red Cross HospitalMusashinoJapan
- Heart Rhythm CenterTokyo Medical and Dental UniversityBunkyo‐kuTokyoJapan
| | - Yasutoshi Nagata
- Department of CardiologyMusashino Red Cross HospitalMusashinoJapan
| | | | - Naoyuki Miwa
- Department of CardiologyMusashino Red Cross HospitalMusashinoJapan
| | - Junji Yamaguchi
- Department of CardiologyMusashino Red Cross HospitalMusashinoJapan
| | | | - Masahiko Goya
- Heart Rhythm CenterTokyo Medical and Dental UniversityBunkyo‐kuTokyoJapan
| | - Kenzo Hirao
- Heart Rhythm CenterTokyo Medical and Dental UniversityBunkyo‐kuTokyoJapan
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76
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Huarancca Reyes T, Scartazza A, Pompeiano A, Ciurli A, Lu Y, Guglielminetti L, Yamaguchi J. Nitrate Reductase Modulation in Response to Changes in C/N Balance and Nitrogen Source in Arabidopsis. Plant Cell Physiol 2018; 59:1248-1254. [PMID: 29860377 DOI: 10.1093/pcp/pcy065] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 03/18/2018] [Indexed: 05/20/2023]
Abstract
Environmental cues modulate the balance of carbon (C) and nitrogen (N) which are essential elements for plant metabolism and growth. In Arabidopsis, photochemical efficiency of PSII, phosphorylation status and localization of many enzymes, and the level of total soluble sugars were affected by an unbalanced C/N ratio. Since differences in C/N affect these parameters, here we checked whether different sources of N have different effects when a high C/N ratio is imposed. NO3- and NH4+ were separately provided in C/N medium. We investigated the effects on photochemical efficiency of PSII, the level of total soluble sugars and nitrate reductase activity under stressful C/N conditions compared with control conditions. We found that treated plants accumulated more total soluble sugars when compared with control. Photochemical efficiency of PSII did not show significant differences between the two sources of nitrogen after 24 h. The actual nitrate reductase activity was the result of a combination of activity, activation state and protein level. This activity constantly decreased starting from time zero in control conditions; in contrast, the actual nitrate reductase activity showed a peak at 2 h after treatment with NO3-, and at 30 min with NH4+. This, according to the level of total soluble sugars, can be explained by the existence of a cross-talk between the sugars in excess and low nitrate in the medium that blocks the activity of nitrate reductase in stressful sugar conditions until the plant is adapted to the stress.
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Affiliation(s)
- Thais Huarancca Reyes
- Department of Agriculture, Food and Environment, University of Pisa, Pisa 56124, Italy
| | - Andrea Scartazza
- Institute of Agro-environmental and Forest Biology, National Research Council, Monterotondo Scalo, RM 00016, Italy
| | - Antonio Pompeiano
- Center for Translational Medicine (CTM), International Clinical Research Center (ICRC), St. Anne's University Hospital, Brno 62500, Czech Republic
| | - Andrea Ciurli
- Department of Agriculture, Food and Environment, University of Pisa, Pisa 56124, Italy
| | - Yu Lu
- Faculty of Science and Graduate School of Life Science, Hokkaido University Kita-ku N10-W8, Sapporo, 060-0810 Japan
| | | | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University Kita-ku N10-W8, Sapporo, 060-0810 Japan
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77
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Yamaguchi T, Kitai T, Miyamoto T, Kagiyama N, Okumura T, Kida K, Oishi S, Akiyama E, Suzuki S, Yamamoto M, Yamaguchi J, Iwai T, Hijikata S, Masuda R, Miyazaki R, Hara N, Nagata Y, Nozato T, Matsue Y. Effect of Optimizing Guideline-Directed Medical Therapy Before Discharge on Mortality and Heart Failure Readmission in Patients Hospitalized With Heart Failure With Reduced Ejection Fraction. Am J Cardiol 2018; 121:969-974. [PMID: 29477488 DOI: 10.1016/j.amjcard.2018.01.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/21/2017] [Accepted: 01/02/2018] [Indexed: 12/19/2022]
Abstract
Guideline-directed medical therapy (GDMT) is recommended for patients with heart failure with reduced ejection fraction (HFrEF). However, the prognostic impact of medication optimization at the time of discharge in patients hospitalized with heart failure (HF) is unclear. We analyzed 534 patients (73 ± 13 years old) with HFrEF. The status of GDMT at the time of discharge (prescription of angiotensin converting enzyme inhibitor [ACE-I]/angiotensin receptor blocker [ARB] and β blocker [BB]) and its association with 1-year all-cause mortality and HF readmission were investigated. Patients were divided into 3 groups: those treated with both ACE-I/ARB and BB (Both group: n = 332, 62%), either ACE-I/ARB or BB (Either group: n = 169, 32%), and neither ACE-I/ARB nor BB (None group: n = 33, 6%), respectively. One-year mortality, but not 1-year HF readmission rate, was significantly different in the 3 groups, in favor of the Either and Both groups. A favorable impact of being on GDMT at the time of discharge on 1-year mortality was retained even after adjustment for covariates (Either group: hazard ratio [HR] 0.44, 95% confidence interval [CI] 0.21 to 0.90, p = 0.025 and Both group: HR 0.29, 95% CI 0.13-0.65, p = 0.002, vs None group). For 1-year HF readmission, no such association was found. In conclusion, optimization of GDMT before the time of discharge was associated with a lower 1-year mortality, but not with HF readmission rate, in patients hospitalized with HFrEF.
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78
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Ito A, Ebata T, Yokoyama Y, Igami T, Mizuno T, Yamaguchi J, Onoe S, Nagino M. Ethanol ablation for refractory bile leakage after complex hepatectomy. Br J Surg 2018; 105:1036-1043. [PMID: 29617036 DOI: 10.1002/bjs.10801] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 11/20/2017] [Accepted: 11/24/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND Only a few reports exist on the use of ethanol ablation for posthepatectomy bile leakage. The aim of this study was to assess the value of ethanol ablation in refractory bile leakage. METHODS Medical records of consecutive patients who underwent a first hepatobiliary resection with bilioenteric anastomosis between 2007 and 2016 were reviewed retrospectively, with special attention to bile leakage and ethanol ablation therapy. Bile leakage was graded as A/B1/B2 according to the International Study Group of Liver Surgery definition. Absolute ethanol was injected into the target bile duct during fistulography. RESULTS Of the 609 study patients, 237 (38·9 per cent) had bile leakage, including grade A in 33, grade B1 in 18 and grade B2 in 186. Left trisectionectomy was more often associated with grade B2 bile leakage than other types of hepatectomy (P < 0·001). Of 186 patients with grade B2 bile leakage, 31 underwent ethanol ablation therapy. Ethanol ablation was started a median of 34 (range 15-122) days after hepatectomy. The median number of treatments was 3 (1-7), and the total amount of ethanol used was 15 (3-71) ml. Complications related to ethanol ablation included transient fever (27 patients) and mild pain (13). Following ethanol ablation, bile leakage resolved in all patients and drains were removed. The median interval between the first ablation and drain removal was 28 (1-154) days. CONCLUSION Ethanol ablation is safe and effective, and may be a treatment option for refractory bile leakage.
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Affiliation(s)
- A Ito
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - T Ebata
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Y Yokoyama
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - T Igami
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - T Mizuno
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - J Yamaguchi
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - S Onoe
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - M Nagino
- Division of Surgical Oncology, Department of Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
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79
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Yamaguchi T, Terashima M, Takamura C, Sakurai H, Ooishi K, Yoshizaki T, Yamaguchi J, Hijikata S, Iwai T, Sagawa Y, Watanabe K, Miyazaki R, Masuda R, Miwa N, Sekigawa M, Hara N, Nagata Y, Miyamoto T, Obayashi T, Nozato T. Cardiac Magnetic Resonance Imaging of Very Late Intrapericardial Hematoma 8 Years after Coronary Artery Bypass Grafting. Intern Med 2018; 57:975-978. [PMID: 29269664 PMCID: PMC5919856 DOI: 10.2169/internalmedicine.9605-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
A 55-year-old man presented with dyspnea, edema, and appetite loss. He had undergone coronary artery bypass grafting 8 years previously. He had jugular venous distention and Kussmaul's sign. Contrast-enhanced cardiac magnetic resonance imaging (CMRI) demonstrated an intrapericardial mass compressing the right ventricular (RV) cavity. T1- and T2-weighted black-blood images showed a mass with heterogeneous high signal intensity and a thick and dark rim. The mass was considered to be a chronic hematoma. After pericardiotomy with surgical removal of the hematoma, CMRI showed the marked improvement of the RV function. Late intrapericardial hematoma is rare and CMRI is useful for making a differential diagnosis.
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Affiliation(s)
- Tetsuo Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | | | | | - Hironobu Sakurai
- Department of Cardiovascular Surgery, Japanese Red Cross Musashino Hospital, Japan
| | - Kiyotoshi Ooishi
- Department of Cardiovascular Surgery, Japanese Red Cross Musashino Hospital, Japan
| | - Tomoya Yoshizaki
- Department of Cardiovascular Surgery, Japanese Red Cross Musashino Hospital, Japan
| | - Junji Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Sadahiro Hijikata
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Takamasa Iwai
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Yuichiro Sagawa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Keita Watanabe
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Ryoichi Miyazaki
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Ryo Masuda
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Naoyuki Miwa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Masahiro Sekigawa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Nobuhiro Hara
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Yasutoshi Nagata
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | | | - Toru Obayashi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
| | - Toshihiro Nozato
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Japan
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80
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Hara N, Miyamoto T, Yamaguchi J, Iwai T, Hijikata S, Watanabe K, Sagawa Y, Masuda R, Miyazaki R, Miwa N, Sekigawa M, Yamaguchi T, Nagata Y, Nozato T, Kobayashi O, Umezawa S, Obayashi T. Treatment Outcomes of Anticoagulant Therapy and Temporary Inferior Vena Cava Filter Implantation for Pregnancy Complicated by Venous Thrombosis. Ann Vasc Dis 2018; 11:106-111. [PMID: 29682116 PMCID: PMC5882350 DOI: 10.3400/avd.oa.17-00100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objective: Although deep vein thrombosis (DVT) followed by pulmonary thromboembolism (PE) is a critical complication during pregnancy, there have been few reports about its intrapartum management. We evaluated intrapartum management by using a temporary inferior vena cava filter (IVCF) in pregnant women with PE/DVT. Materials and Methods: Eleven women with PE/DVT during pregnancy between January 2004 and December 2016 were included. The patients were hospitalized for intravenous unfractionated heparin infusion after acute PE/DVT onset. Seven patients were discharged and continued treatment with subcutaneous injection of heparin at the outpatient unit. IVCF was implanted 1–3 days before delivery in 10 patients. Anticoagulant therapy was discontinued 6–12 h before delivery. We retrospectively analyzed rates of maternal or perinatal death, and recurrence of symptomatic PE/DVT. Results: One patient was diagnosed as having PE/DVT and 10 had DVT alone. One patient suffered hemorrhagic shock during delivery; however, maternal or perinatal death and recurrence of symptomatic PE/DVT did not occur in any patient. Conclusion: Maternal or perinatal death and recurrence of symptomatic PE/DVT was not seen in women diagnosed as having PE/DVT during pregnancy and treated with anticoagulant therapy and IVCF.
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Affiliation(s)
- Nobuhiro Hara
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Takamichi Miyamoto
- Department of General Medicine, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Junji Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Takamasa Iwai
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Sadahiro Hijikata
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Keita Watanabe
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Yuichiro Sagawa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Ryo Masuda
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Ryoichi Miyazaki
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Naoyuki Miwa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Masahiro Sekigawa
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Tetsuo Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Yasutoshi Nagata
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Toshihiro Nozato
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Orie Kobayashi
- Department of Gynecology and Obstetrics, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Satoshi Umezawa
- Department of Gynecology and Obstetrics, Japanese Red Cross Musashino Hospital, Tokyo, Japan
| | - Toru Obayashi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan.,Department of Clinical Engineering, Gunma Paz College, Gunma, Japan
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81
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Yamaguchi J, Suzuki C, Nanao T, Kakuta S, Ozawa K, Tanida I, Saitoh T, Sunabori T, Komatsu M, Tanaka K, Aoki S, Sakimura K, Uchiyama Y. Atg9a deficiency causes axon-specific lesions including neuronal circuit dysgenesis. Autophagy 2018; 14:764-777. [PMID: 28513333 PMCID: PMC6070006 DOI: 10.1080/15548627.2017.1314897] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Conditional knockout mice for Atg9a, specifically in brain tissue, were generated to understand the roles of ATG9A in the neural tissue cells. The mice were born normally, but half of them died within one wk, and none lived beyond 4 wk of age. SQSTM1/p62 and NBR1, receptor proteins for selective autophagy, together with ubiquitin, accumulated in Atg9a-deficient neurosoma at postnatal d 15 (P15), indicating an inhibition of autophagy, whereas these proteins were significantly decreased at P28, as evidenced by immunohistochemistry, electron microscopy and western blot. Conversely, degenerative changes such as spongiosis of nerve fiber tracts proceeded in axons and their terminals that were occupied with aberrant membrane structures and amorphous materials at P28, although no clear-cut degenerative change was detected in neuronal cell bodies. Different from autophagy, diffusion tensor magnetic resonance imaging and histological observations revealed Atg9a-deficiency-induced dysgenesis of the corpus callosum and anterior commissure. As for the neurite extensions of primary cultured neurons, the neurite outgrowth after 3 d culturing was significantly impaired in primary neurons from atg9a-KO mouse brains, but not in those from atg7-KO and atg16l1-KO brains. Moreover, this tendency was also confirmed in Atg9a-knockdown neurons under an atg7-KO background, indicating the role of ATG9A in the regulation of neurite outgrowth that is independent of autophagy. These results suggest that Atg9a deficiency causes progressive degeneration in the axons and their terminals, but not in neuronal cell bodies, where the degradations of SQSTM1/p62 and NBR1 were insufficiently suppressed. Moreover, the deletion of Atg9a impaired nerve fiber tract formation.
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Affiliation(s)
- Junji Yamaguchi
- a Department of Cellular and Molecular Neuropathology , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Chigure Suzuki
- b Department of Cell Biology and Neurosciences , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Tomohisa Nanao
- c Division of Biosignaling, Research Institute for Biomedical Sciences , Tokyo University of Science , Noda , Chiba , Japan
| | - Soichirou Kakuta
- a Department of Cellular and Molecular Neuropathology , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Kentarou Ozawa
- d Department of Pharmacology , Nara Medical University School of Medicine , Nara , Japan
| | - Isei Tanida
- b Department of Cell Biology and Neurosciences , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Tatsuya Saitoh
- e Division of Inflammation Biology, Institute for Enzyme Research , Tokushima University , Tokushima , Japan
| | - Takehiko Sunabori
- b Department of Cell Biology and Neurosciences , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Masaaki Komatsu
- f Department of Biochemistry , Niigata University Graduate School of Medical and Dental Sciences , Chuo-ku , Niigata , Japan
| | - Keiji Tanaka
- g Laboratory of Protein Metabolism , Tokyo Metropolitan Institute of Medical Science , Kamikitazawa, Setagaya-ku , Tokyo , Japan
| | - Shigeki Aoki
- h Departments of Radiology , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
| | - Kenji Sakimura
- i Department of Cellular Neurobiology , Brain Research Institute, Niigata University , Chuo-ku , Niigata , Japan
| | - Yasuo Uchiyama
- a Department of Cellular and Molecular Neuropathology , Juntendo University Graduate School of Medicine , Bunkyo-Ku , Tokyo , Japan
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82
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Ogawa Y, Kakumoto K, Yoshida T, Kuwako KI, Miyazaki T, Yamaguchi J, Konno A, Hata J, Uchiyama Y, Hirai H, Watanabe M, Darnell RB, Okano H, Okano HJ. Elavl3 is essential for the maintenance of Purkinje neuron axons. Sci Rep 2018; 8:2722. [PMID: 29426875 PMCID: PMC5807307 DOI: 10.1038/s41598-018-21130-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [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: 10/13/2017] [Accepted: 01/30/2018] [Indexed: 01/06/2023] Open
Abstract
Neuronal Elav-like (nElavl or neuronal Hu) proteins are RNA-binding proteins that regulate RNA stability and alternative splicing, which are associated with axonal and synaptic structures. nElavl proteins promote the differentiation and maturation of neurons via their regulation of RNA. The functions of nElavl in mature neurons are not fully understood, although Elavl3 is highly expressed in the adult brain. Furthermore, possible associations between nElavl genes and several neurodegenerative diseases have been reported. We investigated the relationship between nElavl functions and neuronal degeneration using Elavl3−/− mice. Elavl3−/− mice exhibited slowly progressive motor deficits leading to severe cerebellar ataxia, and axons of Elavl3−/− Purkinje cells were swollen (spheroid formation), followed by the disruption of synaptic formation of axonal terminals. Deficit in axonal transport and abnormalities in neuronal polarity was observed in Elavl3−/− Purkinje cells. These results suggest that nElavl proteins are crucial for the maintenance of axonal homeostasis in mature neurons. Moreover, Elavl3−/− mice are unique animal models that constantly develop slowly progressive axonal degeneration. Therefore, studies of Elavl3−/− mice will provide new insight regarding axonal degenerative processes.
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Affiliation(s)
- Yuki Ogawa
- Division of Regenerative Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Kyoko Kakumoto
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Immunoregulation for the treatment of inflammation-related disorders, IBRI Laboratory, Foundation for Biomedical Research and Innovation, 2-2 Minatojima-minamimachi Chuo-ku, Kobe, 650-0047, Japan
| | - Tetsu Yoshida
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Laboratory for Marmoset Neural Architecture, Brain Science Institute RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Ken-Ichiro Kuwako
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Taisuke Miyazaki
- Department of Anatomy, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Junji Yamaguchi
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Ayumu Konno
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Junichi Hata
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Laboratory for Marmoset Neural Architecture, Brain Science Institute RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Yasuo Uchiyama
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Hirokazu Hirai
- Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.,Research Program for Neural Signaling, Division of Endocrinology, Metabolism and Signal research, Gunma University Initiative for Advanced Research, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Masahiko Watanabe
- Department of Anatomy, Hokkaido University Graduate School of Medicine, Kita 15, Nishi 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Robert B Darnell
- Laboratory of Molecular Neuro-Oncology and Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.,Laboratory for Marmoset Neural Architecture, Brain Science Institute RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hirotaka James Okano
- Division of Regenerative Medicine, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan. .,Department of Physiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
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83
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Aoyama S, Yamaguchi J, Sato T. Methods for Elucidation of Plant Senescence in Response to C/N-Nutrient Balance. Methods Mol Biol 2018; 1744:151-159. [PMID: 29392665 DOI: 10.1007/978-1-4939-7672-0_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carbon (C) and nitrogen (N) are essential elements for metabolism, and the ratio of C to N availability is called the C/N balance. C/N balance is very important for plant growth, but little is known about the detailed mechanisms of plant C/N responses. Previously a method of treating Arabidopsis plants with sugar-supplemented medium for studying C/N responses at early post-germinative growth stages has been developed. This method, however, cannot be used to determine physiological C/N effects in plants of mature growth stages, including senescence. Here we present two methods of analyzing responses to C/N treatments in senescing plants: transient C/N treatment with liquid medium and long-term C/N treatment with elevated atmospheric CO2.
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Affiliation(s)
- Shoki Aoyama
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, Japan.
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84
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Yamaguchi J, Hara N, Yamaguchi T, Nagata Y, Nozato T, Miyamoto T. Successful treatment of a massive pulmonary embolism using rivaroxaban in a patient with antithrombin III deficiency. J Cardiol Cases 2017; 16:144-147. [PMID: 30279820 PMCID: PMC6149282 DOI: 10.1016/j.jccase.2017.06.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/06/2017] [Accepted: 06/26/2017] [Indexed: 10/19/2022] Open
Abstract
We report a case of acute massive pulmonary embolism in a patient with antithrombin III deficiency. The patient was treated with rivaroxaban. The patient responded well to the therapy, and contrast-enhanced computed tomography showed nearly complete disappearance of the pulmonary embolism. Patients with low antithrombin III activity may have resistance to heparin therapy, leading to insufficient anticoagulation during the acute phase of thromboembolism. This case suggests that direct oral anticoagulants, such as rivaroxaban, may be effective first-line agents for treating venous thromboembolism in patients with antithrombin III deficiency. .
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Affiliation(s)
- Junji Yamaguchi
- Department of Cardiology, Japanese Red Cross Musashino Hospital, Tokyo, Japan
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85
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Maeda O, Yokoyama Y, Yamaguchi J, Ota A, Matsuoka A, Morita S, Inoue M, Mizutani T, Shimokata T, Urakawa H, Mitsuma A, Nagino M, Ando Y. Real-world experience with FOLFIRINOX and gemcitabine plus nab-paclitaxel in the treatment of pancreatic cancer in Japan. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx660.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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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86
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Inaba O, Nitta J, Miwa N, Yamaguchi J, Nagata Y, Hirao K. Clinical and electrophysiological features of respiratory cycle-dependent atrial tachycardia: An analysis of three cases. HeartRhythm Case Rep 2017; 4:18-21. [PMID: 29379720 PMCID: PMC5775449 DOI: 10.1016/j.hrcr.2017.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Osamu Inaba
- Department of Cardiology, Saitama Red Cross Hospital, Saitama, Japan.,Department of Cardiology, Musashino Red Cross Hospital, Musashino, Japan.,Heart Rhythm Center, Tokyo Medical and Dental University, Tokyo, Japan
| | - Junichi Nitta
- Department of Cardiology, Saitama Red Cross Hospital, Saitama, Japan
| | - Naoyuki Miwa
- Department of Cardiology, Musashino Red Cross Hospital, Musashino, Japan
| | - Junji Yamaguchi
- Department of Cardiology, Musashino Red Cross Hospital, Musashino, Japan
| | - Yasutoshi Nagata
- Department of Cardiology, Musashino Red Cross Hospital, Musashino, Japan
| | - Kenzo Hirao
- Heart Rhythm Center, Tokyo Medical and Dental University, Tokyo, Japan
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87
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Kakuta S, Yamaguchi J, Suzuki C, Sasaki M, Kazuno S, Uchiyama Y. Small GTPase Rab1B is associated with ATG9A vesicles and regulates autophagosome formation. FASEB J 2017; 31:3757-3773. [PMID: 28522593 DOI: 10.1096/fj.201601052r] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 04/24/2017] [Indexed: 11/11/2022]
Abstract
ATG9 is a membrane protein that is essential for autophagy and is considered to be directly involved in the early steps of autophagosome formation. Yeast Atg9 is mainly localized to small vesicles (Atg9 vesicles), whereas mammalian ATG9A is reportedly localized to the trans-Golgi network, the endosomal compartment, and other unidentified membrane structures. To dissect the ATG9A-containing membranes, we examined the subcellular localization of ATG9A and performed immunoisolation of those membranes. ATG9A-green fluorescent protein in human culture cells was observed as numerous puncta that move rapidly throughout the cytoplasm. We isolated these cytoplasmic membranes and found that they were small vesicles that resemble the yeast Atg9 vesicle. One of the proteins obtained via proteomic analyses of the mammalian ATG9A vesicle was Rab1, a small GTPase that is essential in endoplasmic reticulum-to-Golgi vesicle trafficking. Knockdown studies of Rab1B showed a suppression of autophagy. In these Rab1B-depleted cells, ATG9A accumulated in intermediate membrane structures at autophagosome formation sites. These results indicate that Rab1B is involved in regulating the proper development of autophagosomes.-Kakuta, S., Yamaguchi, J., Suzuki, C., Sasaki, M., Kazuno, S., Uchiyama, Y. Small GTPase Rab1B is associated with ATG9A vesicles and regulates autophagosome formation.
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Affiliation(s)
- Soichiro Kakuta
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory of Morphology and Image Analysis, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Junji Yamaguchi
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Chigure Suzuki
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mitsuho Sasaki
- Laboratory of Animal Models for Human Diseases, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Saiko Kazuno
- Laboratory of Proteomics and Biomolecular Science, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasuo Uchiyama
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan;
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88
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Kakuta S, Yamaguchi J, Suzuki C, Sasaki M, Kazuno S, Uchiyama Y. Small GTPase Rab1B is associated with ATG9A vesicles and regulates autophagosome formation. FASEB J 2017. [PMID: 28522593 DOI: 10.1096/fj.201601052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
ATG9 is a membrane protein that is essential for autophagy and is considered to be directly involved in the early steps of autophagosome formation. Yeast Atg9 is mainly localized to small vesicles (Atg9 vesicles), whereas mammalian ATG9A is reportedly localized to the trans-Golgi network, the endosomal compartment, and other unidentified membrane structures. To dissect the ATG9A-containing membranes, we examined the subcellular localization of ATG9A and performed immunoisolation of those membranes. ATG9A-green fluorescent protein in human culture cells was observed as numerous puncta that move rapidly throughout the cytoplasm. We isolated these cytoplasmic membranes and found that they were small vesicles that resemble the yeast Atg9 vesicle. One of the proteins obtained via proteomic analyses of the mammalian ATG9A vesicle was Rab1, a small GTPase that is essential in endoplasmic reticulum-to-Golgi vesicle trafficking. Knockdown studies of Rab1B showed a suppression of autophagy. In these Rab1B-depleted cells, ATG9A accumulated in intermediate membrane structures at autophagosome formation sites. These results indicate that Rab1B is involved in regulating the proper development of autophagosomes.-Kakuta, S., Yamaguchi, J., Suzuki, C., Sasaki, M., Kazuno, S., Uchiyama, Y. Small GTPase Rab1B is associated with ATG9A vesicles and regulates autophagosome formation.
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Affiliation(s)
- Soichiro Kakuta
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory of Morphology and Image Analysis, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Junji Yamaguchi
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Chigure Suzuki
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mitsuho Sasaki
- Laboratory of Animal Models for Human Diseases, National Institute of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Saiko Kazuno
- Laboratory of Proteomics and Biomolecular Science, Research Support Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasuo Uchiyama
- Department of Cellular and Molecular Neuropathology, Juntendo University Graduate School of Medicine, Tokyo, Japan;
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89
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Oka H, Nishikawa M, Takeishi T, Yamaguchi J, Nishi M, Hayashi T, Kobayashi K. Calculation Code of System Effect Using Serial Reactor Model. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a22669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- H. Oka
- Kyushu University, Graduate School of Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan 81-92-642-3785
| | - M. Nishikawa
- Kyushu University, Graduate School of Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan 81-92-642-3785
| | - T. Takeishi
- Kyushu University, Graduate School of Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan 81-92-642-3785
| | - J. Yamaguchi
- Kyushu University, Graduate School of Engineering Science Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan 81-92-642-3785
| | - M. Nishi
- Tritium Process Laboratory, Japan Atomic Energy Research Institute, Tokai, Ibaraki, Japan
| | - T. Hayashi
- Tritium Process Laboratory, Japan Atomic Energy Research Institute, Tokai, Ibaraki, Japan
| | - K. Kobayashi
- Tritium Process Laboratory, Japan Atomic Energy Research Institute, Tokai, Ibaraki, Japan
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90
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Jujo K, Tanaka K, Otsuki H, Okai I, Nakashima M, Dohi T, Okazaki S, Kawashima H, Nara Y, Kyono H, Yamaguchi J, Miyauchi K, Daida H, Kozuma K, Hagiwara N. P501Prediction of 3-year mortality after rotational atherectomy in severely calcified coronary artery. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p501] [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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91
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Sekiguchi H, Kanbayashi K, Watanabe-Kawada E, Arashi H, Fujii S, Yamaguchi J, Ogawa H, Hagiwara N. P6453Sex-related differences in coronary risk factors of major adverse cardiovascular events in acute coronary syndrome with contemporary dyslipidaemia management: a sub-analysis of data from the HIJ-PROPE. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- H. Sekiguchi
- Tokyo Women's Medical University, Aoyama Hospital, Tokyo, Japan
| | | | - E. Watanabe-Kawada
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H. Arashi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - S. Fujii
- Sendai Heart center, Sendai, Japan
| | - J. Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H. Ogawa
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - N. Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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92
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Jujo K, Otsuki H, Tanaka K, Okai I, Nakashima M, Dohi T, Okazaki S, Kawashima H, Nara Y, Kyono H, Yamaguchi J, Miyauchi K, Daida H, Kozuma K, Hagiwara N. P6452Predictors for long-term cardiovascular death after rotational atherectomy in patients with regular hemodialysis - from J2T multicenter registry -. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- K. Jujo
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - H. Otsuki
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K. Tanaka
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - I. Okai
- Juntendo University, Department of Cardiology, Tokyo, Japan
| | - M. Nakashima
- Teikyo University, Department of Cardiology, Tokyo, Japan
| | - T. Dohi
- Juntendo University, Department of Cardiology, Tokyo, Japan
| | - S. Okazaki
- Juntendo University, Department of Cardiology, Tokyo, Japan
| | - H. Kawashima
- Teikyo University, Department of Cardiology, Tokyo, Japan
| | - Y. Nara
- Teikyo University, Department of Cardiology, Tokyo, Japan
| | - H. Kyono
- Teikyo University, Department of Cardiology, Tokyo, Japan
| | - J. Yamaguchi
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
| | - K. Miyauchi
- Juntendo University, Department of Cardiology, Tokyo, Japan
| | - H. Daida
- Juntendo University, Department of Cardiology, Tokyo, Japan
| | - K. Kozuma
- Teikyo University, Department of Cardiology, Tokyo, Japan
| | - N. Hagiwara
- Tokyo Women's Medical University, Department of Cardiology, Tokyo, Japan
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93
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Kanbayashi K, Yamaguchi J, Fujii S, Kawada-Watanabe E, Arashi H, Sekiguchi H, Ogawa H, Hagiwara N. P1119The impact of serum sitosterol level on clinical outcomes in acute coronary syndrome patients with dyslipidemia: a subanalysis of HIJ PROPER. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K. Kanbayashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - J. Yamaguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - S. Fujii
- Cardiovascular Center of Sendai, Sendai, Japan
| | | | - H. Arashi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H. Sekiguchi
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - H. Ogawa
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
| | - N. Hagiwara
- Tokyo Women's Medical University, Cardiology, Tokyo, Japan
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94
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Aoyama S, Terada S, Sanagi M, Hasegawa Y, Lu Y, Morita Y, Chiba Y, Sato T, Yamaguchi J. Membrane-localized ubiquitin ligase ATL15 functions in sugar-responsive growth regulation in Arabidopsis. Biochem Biophys Res Commun 2017; 491:33-39. [PMID: 28690153 DOI: 10.1016/j.bbrc.2017.07.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 07/05/2017] [Indexed: 12/12/2022]
Abstract
Ubiquitin ligases play important roles in regulating various cellular processes by modulating the protein function of specific ubiquitination targets. The Arabidopsis Tóxicos en Levadura (ATL) family is a group of plant-specific RING-type ubiquitin ligases that localize to membranes via their N-terminal transmembrane-like domains. To date, 91 ATL isoforms have been identified in the Arabidopsis genome, with several ATLs reported to be involved in regulating plant responses to environmental stresses. However, the functions of most ATLs remain unknown. This study, involving transcriptome database analysis, identifies ATL15 as a sugar responsive ATL gene in Arabidopsis. ATL15 expression was rapidly down-regulated in the presence of sugar. The ATL15 protein showed ubiquitin ligase activity in vitro and localized to plasma membrane and endomembrane compartments. Further genetic analyses demonstrated that the atl15 knockout mutants are insensitive to high glucose concentrations, whereas ATL15 overexpression depresses plant growth. In addition, endogenous glucose and starch amounts were reciprocally affected in the atl15 knockout mutants and the ATL15 overexpressors. These results suggest that ATL15 protein plays a significant role as a membrane-localized ubiquitin ligase that regulates sugar-responsive plant growth in Arabidopsis.
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Affiliation(s)
- Shoki Aoyama
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Saki Terada
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Miho Sanagi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yoko Hasegawa
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yu Lu
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yoshie Morita
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yukako Chiba
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo, 060-0810, Japan.
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95
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Murayama Y, Hasebe M, Yamaguchi J, Yasunaga M, Fujiwara Y. THE ASSOCIATION BETWEEN POSITIVE EMOTIONAL EXPERIENCE AND SELF-ESTEEM IN OLDER ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Murayama
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - M. Hasebe
- Seigakuin University, Saitama, Japan
| | - J. Yamaguchi
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - M. Yasunaga
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
| | - Y. Fujiwara
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,
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96
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Yamaguchi T, Miyamoto T, Iwai T, Yamaguchi J, Hijikata S, Miyazaki R, Miwa N, Sekigawa M, Hara N, Nagata Y, Nozato T, Yamauchi Y, Obayashi T, Isobe M. Prognosis of super-elderly healthy Japanese patients after pacemaker implantation for bradycardia. J Cardiol 2017; 70:18-22. [DOI: 10.1016/j.jjcc.2016.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/08/2016] [Accepted: 09/16/2016] [Indexed: 11/29/2022]
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97
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Hijikata S, Miyamoto T, Yamaguchi J, Iwai T, Watanabe K, Sagawa Y, Masuda R, Miyazaki R, Miwa N, Sekigawa M, Yamaguchi T, Hara N, Nagata Y, Nozato T, Sakurai U, Hirao K. Recurrent pulmonary emboli with characteristic histopathology. Cardiovasc Pathol 2017; 29:45-47. [PMID: 28575717 DOI: 10.1016/j.carpath.2017.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/08/2017] [Indexed: 11/28/2022] Open
Abstract
We report a unique case of recurrent thromboembolism and its histological findings that were revealed in an autopsy. Although it is well known that repeating thrombosis presents organization and recanalization, we also observed rare findings of thickening of the bronchial artery and fixation of the valve of the lower extremity vein in this case.
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Affiliation(s)
- Sadahiro Hijikata
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan.
| | - Takamichi Miyamoto
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Junji Yamaguchi
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Takamasa Iwai
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Keita Watanabe
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Yuichiro Sagawa
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Ryo Masuda
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Ryoichi Miyazaki
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Naoyuki Miwa
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Masahiro Sekigawa
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Tetsuo Yamaguchi
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Nobuhiro Hara
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Yasutoshi Nagata
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Toshihiro Nozato
- Depertment of Cardiology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Urara Sakurai
- Depertment of Clinical pathology, Japanese Red Cross Musashino Hospital, 1-26-1 Kyonan-cho, Musashino-City, Tokyo 181-8610, Japan
| | - Kenzo Hirao
- Depertment of Cardiology, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-0034, Japan
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Arae T, Isai S, Sakai A, Mineta K, Yokota Hirai M, Suzuki Y, Kanaya S, Yamaguchi J, Naito S, Chiba Y. Co-ordinated Regulations of mRNA Synthesis and Decay during Cold Acclimation in Arabidopsis Cells. Plant Cell Physiol 2017; 58:1090-1102. [PMID: 28444357 DOI: 10.1093/pcp/pcx059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 09/05/2016] [Accepted: 04/13/2017] [Indexed: 06/07/2023]
Abstract
Plants possess a cold acclimation system to acquire freezing tolerance through pre-exposure to non-freezing low temperatures. The transcriptional cascade of C-repeat-binding factors (CBFs)/dehydration response element-binding factors (DREBs) is considered a major transcriptional regulatory pathway during cold acclimation. However, little is known regarding the functional significance of mRNA stability regulation in the response of gene expression to cold stress. The actual level of individual mRNAs is determined by a balance between mRNA synthesis and degradation. Therefore, it is important to assess the regulatory steps to increase our understanding of gene regulation. Here, we analyzed temporal changes in mRNA amounts and half-lives in response to cold stress in Arabidopsis cell cultures based on genome-wide analysis. In this mRNA decay array method, mRNA half-life measurements and microarray analyses were combined. In addition, temporal changes in the integrated value of transcription rates were estimated from the above two parameters using a mathematical approach. Our results showed that several cold-responsive genes, including Cold-regulated 15a, were relatively destabilized, whereas the mRNA amounts were increased during cold treatment by accelerating the transcription rate to overcome the destabilization. Considering the kinetics of mRNA synthesis and degradation, this apparently contradictory result supports that mRNA destabilization is advantageous for the swift increase in CBF-responsive genes in response to cold stress.
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Affiliation(s)
- Toshihiro Arae
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Shiori Isai
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
| | - Akira Sakai
- Department of Mathematics, Hokkaido University, Sapporo, Japan
| | - Katsuhiko Mineta
- King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal, Saudi Arabia
| | | | - Yuya Suzuki
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- National Institute of Agrobiological Sciences, NARO, Tsukuba, Japan
| | - Shigehiko Kanaya
- Graduate School of Information Science, Nara Institute of Science and Technology, Ikoma, Japan
| | - Junji Yamaguchi
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Faculty of Science, Hokkaido University, Sapporo, Japan
| | - Satoshi Naito
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Yukako Chiba
- Graduate School of Life Science, Hokkaido University, Sapporo, Japan
- Faculty of Science, Hokkaido University, Sapporo, Japan
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99
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Yasuda S, Aoyama S, Hasegawa Y, Sato T, Yamaguchi J. Arabidopsis CBL-Interacting Protein Kinases Regulate Carbon/Nitrogen-Nutrient Response by Phosphorylating Ubiquitin Ligase ATL31. Mol Plant 2017; 10:605-618. [PMID: 28111287 DOI: 10.1016/j.molp.2017.01.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [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: 06/20/2016] [Revised: 01/03/2017] [Accepted: 01/10/2017] [Indexed: 05/20/2023]
Abstract
In response to the ratio of available carbon (C) and nitrogen (N) nutrients, plants regulate their metabolism, growth, and development, a process called the C/N-nutrient response. However, the molecular basis of C/N-nutrient signaling remains largely unclear. In this study, we identified three CALCINEURIN B-LIKE (CBL)-INTERACTING PROTEIN KINASES (CIPKs), CIPK7, CIPK12, and CIPK14, as key regulators of the C/N-nutrient response during the post-germination growth in Arabidopsis. Single-knockout mutants of CIPK7, CIPK12, and CIPK14 showed hypersensitivity to high C/low N conditions, which was enhanced in their triple-knockout mutant, indicating that they play a negative role and at least partly function redundantly in the C/N-nutrient response. Moreover, these CIPKs were found to regulate the function of ATL31, a ubiquitin ligase involved in the C/N-nutrient response via the phosphorylation-dependent ubiquitination and proteasomal degradation of 14-3-3 proteins. CIPK7, CIPK12, and CIPK14 physically interacted with ATL31, and CIPK14, acting with CBL8, directly phosphorylated ATL31 in a Ca2+-dependent manner. Further analyses showed that these CIPKs are required for ATL31 phosphorylation and stabilization, which mediates the degradation of 14-3-3 proteins in response to C/N-nutrient conditions. These findings provide new insights into C/N-nutrient signaling mediated by protein phosphorylation.
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Affiliation(s)
- Shigetaka Yasuda
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Shoki Aoyama
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Yoko Hasegawa
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
| | - Takeo Sato
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan.
| | - Junji Yamaguchi
- Faculty of Science and Graduate School of Life Science, Hokkaido University, Sapporo 060-0810, Japan
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100
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Yamaguchi J, Miyamoto T, Hara N, Yamaguchi T, Umemoto T. Omental flap transposition for inferior vena cava filter penetration. Radiol Case Rep 2017; 12:81-83. [PMID: 28228885 PMCID: PMC5310262 DOI: 10.1016/j.radcr.2016.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 10/06/2016] [Accepted: 10/23/2016] [Indexed: 11/28/2022] Open
Abstract
A 40-year-old woman presented with uterine malignancy, deep vein thrombosis, and nonmassive pulmonary embolism in both lungs. Gunter-tulip filter was inserted, because she had severe genital bleeding, which is one of the contraindications to anticoagulation therapy. Total hysterectomy was conducted and anticoagulation therapy was started afterward. The thrombus worsened perioperatively, and the filter could not be retrieved. Since there was lymph node recurrence, the second time operation was performed. During operation, the struts were found to be penetrating the inferior vena cava. Omental flap was used to cover the struts, and no associated complications occurred after operation.
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Affiliation(s)
- Junji Yamaguchi
- Department of Cardiology, Musashino Red Cross Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo 180-8610, Japan
| | - Takamichi Miyamoto
- Department of Cardiology, Musashino Red Cross Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo 180-8610, Japan
| | - Nobuhiro Hara
- Department of Cardiology, Musashino Red Cross Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo 180-8610, Japan
| | - Tetsuo Yamaguchi
- Department of Cardiology, Musashino Red Cross Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo 180-8610, Japan
| | - Tomoyuki Umemoto
- Department of Cardiology, Musashino Red Cross Hospital, 1-26-1 Kyonan-cho, Musashino City, Tokyo 180-8610, Japan
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