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Hanazawa T, Kamijo Y, Yoshizawa T, Fujita Y, Usui K, Haga Y. Acute cholinergic syndrome in a patient taking the prescribed dose of donepezil for Alzheimer's disease. Psychogeriatrics 2020; 20:538-539. [PMID: 32065723 DOI: 10.1111/psyg.12531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 01/28/2020] [Accepted: 01/31/2020] [Indexed: 11/26/2022]
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Fujita Y, Hirabayashi H, Imataka G, Yoshihara S. Effectiveness of stenting with an intubation tube for a subglottic mass in an infant. BMJ Case Rep 2020; 13:13/6/e235904. [PMID: 32606135 DOI: 10.1136/bcr-2020-235904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Nawata M, Funada M, Fujita Y, Nagayasu A, Someya K, Kazuyoshi S, Tanaka Y. AB0213 THE USE OF MUSCULOSKELETAL ULTRASOUND AND PATIENT REPORTED OUTCOMES TO IDENTIFY THE FACTOR TO GIVE RESIDUAL SYMPTOMS AMONG PATIENTS WITH RHEUMATOID ARTHRITIS IN SDAI-REMISSION OR LOW DISEASE ACTIVITY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:The goal of treatment in rheumatoid arthritis (RA) is to achieve remission. There is the patient with residual symptoms in the Japanese RA patient who achieved clinical remission. There are not many studies to examine the relation between everyday life, social activity and evaluation of disease activities using musculoskeletal ultrasound (MSKUS).Objectives:To identify the factor to give residual symptoms of RA patients in SDAI-remission (REM) or low disease activity (LDA), using MSKUS.Methods:300 patients were enrolled. The synovitis evaluated gray scale (GS) and power doppler (PD) with 22 both hands joints by MSKUS. We evaluated age, sex, the number of tender joint (TJ) and swelling joint (SJ), the serologic characteristics (CRP, ESR, CCP, RF, MMP-3), Patient Reported Outcomes (PROs) (morning stiffness (MS), pain-VAS, fatigue-VAS), HAQ and EQ5D-5L.Results:(1). Stratified analysis was performed between HAD/MDA group (N=106) and LDA/REM group (N=194). As a result of single variable analysis, many factors were extracted with significant difference. As a result of the multivariate analysis, MTX dose, number of TJ and SJ, MS, fatigue-VAS, HAQ, EQ5D-5L, and GS≧2 were extracted with a dominant difference. (2). For the stratified analysis in GS≧2, the ratio was low, and the disease duration was short significantly in the LDA/REM group. (3). Next, stratified analysis was performed between Low group (N=95) and REM group (N=99). As a result of single variable analysis, number of TJ and SJ, MTX dose, HAQ, EQ5D-5L, MS, pain-VAS, fatigue-VAS, EGA, GS≧1, GS≧2, GS total score, PD≧1 and PD total score were extracted with significant difference. As a result of the multivariate analysis, number of TJ and fatigue-VAS were extracted with a dominant difference.Conclusion:(1). It became clear that the factor which participated in the achievement with SDAI-remission or low disease activity was enough quantity of MTX dose, use of b/t DMARD, US-GS level, residual symptoms (lassitude · pain joint) to be caused by RA. Particularly, the ratio of GS≧2 was low, and the disease was short. (2). In the LDA patients (who do not achieve clinical remission), they had residual symptoms (fatigue and TJ). (3). In the REM patients, remaining inflammation was not seen in MSKUS. The conclusion is that the induction of remission is important from the viewpoint of not only the prevention of joint destruction but also improvement and maintenance of long-term QoL.Disclosure of Interests:MASAO NAWATA Grant/research support from: Eli Lilly Japan K.K., Masashi funada: None declared, YUYA FUJITA: None declared, Atsushi Nagayasu: None declared, Kazuki Someya: None declared, SAITO KAZUYOSHI: None declared, Yoshiya Tanaka Grant/research support from: Asahi-kasei, Astellas, Mitsubishi-Tanabe, Chugai, Takeda, Sanofi, Bristol-Myers, UCB, Daiichi-Sankyo, Eisai, Pfizer, and Ono, Consultant of: Abbvie, Astellas, Bristol-Myers Squibb, Eli Lilly, Pfizer, Speakers bureau: Daiichi-Sankyo, Astellas, Chugai, Eli Lilly, Pfizer, AbbVie, YL Biologics, Bristol-Myers, Takeda, Mitsubishi-Tanabe, Novartis, Eisai, Janssen, Sanofi, UCB, and Teijin
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Imataka G, Fujita Y, Kano Y, Yoshihara S. Abnormal predominantly frontal high voltage and slow EEG findings with acute encephalopathy associated with acute focal bacterial nephritis. J BIOL REG HOMEOS AG 2020; 34:1131-1133. [PMID: 32495616 DOI: 10.23812/20-197-l-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
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105
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Kawamoto A, Fujita Y, Sietsema W, Wang J, Takagi H, Losordo D. Design of a potentially registrational study of sakigake-designated GCSF-Mobilized autologous CD34 cell (CLBS12) Therapy of no-option critical limb ischemia including arteriosclerosis obliterans and Buerger's Disease. Cytotherapy 2020. [DOI: 10.1016/j.jcyt.2020.03.088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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106
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Kamata H, Nakano S, Shima N, Fujita Y, Usui K, Kamijo Y, Hanazawa T, Katagi M. Surfactants in glyphosate products in Japan. Clin Toxicol (Phila) 2020; 58:425-426. [PMID: 31389728 DOI: 10.1080/15563650.2019.1648818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/26/2019] [Accepted: 07/22/2019] [Indexed: 10/26/2022]
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Miyazawa H, Fujita Y, Muramatsu K, Iwata H, Nomura T, Namba K, Hoshina D, Shimizu H. Refractory juvenile psoriatic uveitis without arthritis: a literature review. J Eur Acad Dermatol Venereol 2020; 34:e173-e175. [DOI: 10.1111/jdv.16127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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108
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Matsubara D, Konishi H, Arita T, Shoda K, Fujita Y, Ogino S, Takao K, Nanishi K, Kosuga T, Komatsu S, Shiozaki A, Fujiwara H, Okamoto K, Otsuji E. Involvement of Intracellular and Extracellular High-Mobility Group Box-1 in the Progression of Esophageal Squamous Cell Carcinoma. Ann Surg Oncol 2020; 27:3233-3244. [PMID: 32221734 DOI: 10.1245/s10434-020-08363-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND High-mobility group box-1 (HMGB1) is involved in a broad range of inflammatory responses and the progression of various types of malignancy. However, the roles of HMGB1 in the progression of esophageal squamous cell carcinoma (ESCC) are unclear. The aim of this study was to investigate the significance of intracellular and extracellular HMGB1 in ESCC. METHODS HMGB1 levels were measured in the tissue and plasma of patients with ESCC, or in ESCC cell lines and their conditioned medium. The effects of downregulation of intracellular HMGB1 or upregulation of extracellular HMGB1 on proliferation, cell migration, and invasion were evaluated using proliferation, transwell, and wound healing assays. RESULTS Downregulation of HMGB1 expression inhibited cell proliferation, migration, and invasion. On the other hand, upregulation of extracellular HMGB1 level by addition of recombinant HMGB1 promoted the migratory and invasive abilities of ESCC cells through increases of phosphorylation of the signal-regulated kinase 1/2 and NF-κBp65 proteins. These effects of extracellular HMGB1 were attenuated by treatment with recombinant soluble thrombomodulin, which adsorbs HMGB1. The expression of HMGB1 was significantly higher in tumor tissue (p = 0.008), and the concentration of HMGB1 in the plasma was significantly higher in patients with ESCC than in healthy volunteers (p = 0.04). Cancer-specific survival was worse in patients with high concentration of plasma HMGB1 (p = 0.01). CONCLUSION Increase of HMGB1 levels in tumor cells or plasma plays a crucial role in the malignant potential of ESCC. Intracellular and extracellular HMGB1 may be a therapeutic target in ESCC.
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Fujita Y, Hishiki H, Nagasawa K, Ebata R, Shimojo N. Infectious endocarditis with abdominal pain after shedding of deciduous teeth. Pediatr Int 2020; 62:414-416. [PMID: 32246565 DOI: 10.1111/ped.14091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 11/04/2019] [Accepted: 12/09/2019] [Indexed: 11/29/2022]
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110
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Kagawa K, Kubota K, Kurita Y, Takagi Y, Ishii K, Hasegawa S, Iwasaki A, Sato T, Fujita Y, Kato S, Watanabe S, Sekino Y, Hosono K, Nakajima A. Effect of preventive closure of the frenulum after endoscopic papillectomy: A prospective pilot study. J Gastroenterol Hepatol 2020; 35:374-379. [PMID: 31693767 DOI: 10.1111/jgh.14922] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/15/2019] [Accepted: 10/29/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM The usefulness of preventive closure of the frenulum after endoscopic papillectomy (EP) could reduce bleeding. The feasibility and safety of clipping were evaluated in this prospective pilot study. METHODS This study involved 40 consecutive patients who underwent preventive closure of the frenulum by clipping just after EP. The outcome data were compared with those of the previous 40 patients in whom no preemptive closure had been performed (no-closure group) (UMIN000014783). Additionally, the bleeding sites were examined. RESULTS The clipping procedure was successful in all patients. As compared to the no-closure group, the rate of bleeding (P = 0.026) and period of hospital stay (P < 0.001) were significantly reduced in the closure group. There was no difference in the procedure time between the two groups. Furthermore, the incidence rates of pancreatitis and perforation were comparable in the two groups. The bleeding was noted in the frenulum area rather than at any other site in 90.9% of cases. CONCLUSION Preventive closure of the frenulum after EP is an effective, safe, rational, and economical method to reduce the incidence of delayed bleeding, without prolonging the procedure time or increasing the risk of post-procedure pancreatitis perforation.
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Gong T, Habara H, Sumioka K, Yoshimoto M, Hayashi Y, Kawazu S, Otsuki T, Matsumoto T, Minami T, Abe K, Aizawa K, Enmei Y, Fujita Y, Ikegami A, Makiyama H, Okazaki K, Okida K, Tsukamoto T, Arikawa Y, Fujioka S, Iwasa Y, Lee S, Nagatomo H, Shiraga H, Yamanoi K, Wei MS, Tanaka KA. Direct observation of imploded core heating via fast electrons with super-penetration scheme. Nat Commun 2019; 10:5614. [PMID: 31819056 PMCID: PMC6901506 DOI: 10.1038/s41467-019-13574-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 11/08/2019] [Indexed: 11/09/2022] Open
Abstract
Fast ignition (FI) is a promising approach for high-energy-gain inertial confinement fusion in the laboratory. To achieve ignition, the energy of a short-pulse laser is required to be delivered efficiently to the pre-compressed fuel core via a high-energy electron beam. Therefore, understanding the transport and energy deposition of this electron beam inside the pre-compressed core is the key for FI. Here we report on the direct observation of the electron beam transport and deposition in a compressed core through the stimulated Cu Kα emission in the super-penetration scheme. Simulations reproducing the experimental measurements indicate that, at the time of peak compression, about 1% of the short-pulse energy is coupled to a relatively low-density core with a radius of 70 μm. Analysis with the support of 2D particle-in-cell simulations uncovers the key factors improving this coupling efficiency. Our findings are of critical importance for optimizing FI experiments in a super-penetration scheme.
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Katoh N, Ohya Y, Ikeda M, Ebihara T, Katayama I, Saeki H, Shimojo N, Tanaka A, Nakahara T, Nagao M, Hide M, Fujita Y, Fujisawa T, Futamura M, Masuda K, Murota H, Yamamoto-Hanada K. Clinical practice guidelines for the management of atopic dermatitis 2018. J Dermatol 2019; 46:1053-1101. [PMID: 31599013 DOI: 10.1111/1346-8138.15090] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022]
Abstract
Atopic dermatitis (AD) is a disease characterized by relapsing eczema with pruritus as a primary lesion. The current strategies to treat AD in Japan from the perspective of evidence-based medicine consist of three primary measures: (i) the use of topical corticosteroids and tacrolimus ointment as the main treatment for the inflammation; (ii) topical application of emollients to treat the cutaneous barrier dysfunction; and (iii) avoidance of apparent exacerbating factors, psychological counseling and advice about daily life. The guidelines present recommendations to review clinical research articles, evaluate the balance between the advantages and disadvantages of medical activities, and optimize medical activity-related patient outcomes with respect to several important points requiring decision-making in clinical practice.
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Fujita Y, Sasayama T, Tanaka K, Kyotani K, Nagashima H, Kohta M, Kimura H, Fujita A, Kohmura E. DWI for Monitoring the Acute Response of Malignant Gliomas to Photodynamic Therapy. AJNR Am J Neuroradiol 2019; 40:2045-2051. [PMID: 31753834 DOI: 10.3174/ajnr.a6300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/13/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Photodynamic therapy is a novel treatment that provides effective local control, but little is known about photodynamic therapy-induced changes on MR imaging. The aim of this study was to assess the utility of DWI and ADC in monitoring the response of malignant gliomas to photodynamic therapy. MATERIALS AND METHODS Time-dependent changes in DWI and ADC values after photodynamic therapy were analyzed in a group that received photodynamic therapy in comparison with a group that did not. RESULTS Twenty-four patients were enrolled (photodynamic therapy, n = 14; non-photodynamic therapy, n = 10). In all patients who received photodynamic therapy, linear high signals on DWI in the irradiated area were detected adjacent to the resection cavity and were 5-7 mm in depth from 1 day posttreatment and disappeared in about 30 days without any neurologic deterioration. The non-photodynamic therapy group did not show this change. The photodynamic therapy group had significantly lower ADC values from 1 day posttreatment (P < .001), which increased steadily and disappeared by 30 days. There was no decline or time-dependent change in ADC values in the non-photodynamic therapy group. CONCLUSIONS The acute response of malignant gliomas to photodynamic therapy was detected as linear high signals on DWI and as a decrease in ADC values. These findings were asymptomatic and transient. Although the photodynamic therapy-induced acute response on MR imaging disappeared after approximately 30 days, it may be helpful for confirming the photodynamic therapy-irradiated area.
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Shimada M, Kanazu M, Shimokawa M, Saito R, Mori M, Tamura A, Okano Y, Fujita Y, Endo T, Motegi M, Takata S, Kita T, Sukoh N, Takenoyama M, Atagi S. Clinical outcomes in elderly patients with advanced non-small cell lung cancer: A prospective multicenter study of the National Hospital Organization in Japan. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz437.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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115
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Baba K, Tanaka H, Fujita Y, Nakamura A, Kikuchi E, Kawai Y, Harada T, Watanabe N, Yokouchi H, Usui K, Saito R, Watanabe H, Masuda T, Fukuhara T, Kudo K, Honda R, Oizimi S, Maemondo M, Inoue A, Morikawa N. A randomized, phase II study comparing irinotecan versus amrubicin as maintenance therapy after first-line induction therapy for extensive disease small cell lung cancer (HOT1401/NJLCG1401). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz437.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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116
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Ishikawa H, Tsuji D, Miyagi T, Kawasaki Y, Yamamoto K, Nakao M, Nakagaki S, Hayashi T, Ayuhara H, Harada T, Tamaki S, Maeda A, Ohashi Y, Arakawa Y, Fujita Y, Miyamoto Y, Yano T, Tanaka R, Itou K. Irinotecan and cisplatin therapy-induced neutropenia as a prognostic factor in patients with extensive-disease small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz420.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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117
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Usui K, Minami E, Fujita Y, Kobayashi H, Hanazawa T, Kamijo Y, Funayama M. A fast paraquat quantitation method in human serum using probe electrospray ionization–tandem mass spectrometry for emergency settings. J Pharmacol Toxicol Methods 2019; 100:106610. [DOI: 10.1016/j.vascn.2019.106610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/04/2019] [Accepted: 07/06/2019] [Indexed: 11/25/2022]
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118
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Yokouchi H, Asahina H, Oizumi S, Takamura K, Harada T, Harada M, Kanazawa K, Fujita Y, Kojima T, Sugaya F, Tanaka H, Honda R, Ogi T, Kikuchi E, Ikari T, Dosaka-Akita H, Isobe H, Nishimura M. MA13.10 A Phase II Study of Carboplatin and Nab-Paclitaxel for Advanced Non-Small Cell Lung Cancer with Interstitial Lung Disease (HOT1302). J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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119
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Matsumoto S, Matsutani T, Fujita Y, Kitaura K, Nakamura Y, Nakamichi T, Nakamura A, Kuroda A, Hashimoto M, Kondo N, Shini T, Suzuki R, Hasegawa S. P2.04-62 TCR Repertoire Analysis of Peripheral CD8+PD-1+ T Cells Is Effective as a Predictive Biomarker for Response to the Immune Checkpoint Inhibitor. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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120
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Sanai N, Tien AC, Li J, Bao X, DeRogatis A, Fujita Y, Pennington-Krygier C, Kim S, Mehta S. A phase 0/II clinical trial of a CDK4/6 inhibitor in aggressive meningioma patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz243.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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121
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Harada T, Asahina H, Oizumi S, Takamura K, Harada M, Kanazawa K, Fujita Y, Kojima T, Sugaya F, Tanaka H, Ryoichi H, Ogi T, Ikari T, Yokouchi H, Kikuch E, Akita H, Isobe H, Nishimura M. A prospective phase II trial of carboplatin (CBDCA) and nab-paclitaxel (nabPTX) for advanced non-small cell lung cancer (NSCLC) with interstitial lung disease (ILD). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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122
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Kanazu M, Shimokawa M, Saito R, Mori M, Tamura A, Okano Y, Fujita Y, Endo T, Motegi M, Takata S, Kita T, Sukoh N, Takenoyama M, Atagi S. Predicting chemotherapy toxicity in elderly patients with advanced non-small cell lung cancer: A prospective multicenter study of the National Hospital Organization in Japan. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ko R, Oizumi S, Mizugaki H, Fujita Y, Harada T, Takashina T, Igawa S, Watanabe K, Hotta T, Minemura H, Saeki S, Yagishita S, Hamada A. P1.14-36 Phase II Trial of Afatinib in Elderly Patients Aged Over 75 Years with EGFR Mutation Positive Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Fujita Y, Yano T, Abe K, Nagano N, Kamiyama N, Fujito T, Mochizuki A, Koyama M, Kouzu H, Muranaka A, Naganara D, Tanno M, Miki T, Miura T. P6453Activation of necroptotic pathway by downregulated caspase-8 expression is associated with progression of left ventricular remodeling in nonischemic dilated cardiomyopathy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Necroptosis, a form of programmed necrosis, has been suggested to be involved in the pathogenesis of various pathological conditions including heart failure. Protein expression of caspase-8, an endogenous inhibitor of necroptosis, is reported to be downregulated in human failing hearts, but its clinical significance remains unclear.
Methods
Endomyocardial biopsy specimens were obtained from patients with nonischemic dilated cardiomyopathy (n=57, 56.2±14.5 years old, 70% male). The area stained with antibodies against caspase-8 and phospho-MLKL-Ser358 was calculated using an image analyzer, and fibrotic and cardiomyocyte areas were determined by Masson's Trichrome staining. Using a level of median caspase-8 expression (6.04% of the area of the myocardium with caspase-8 signal), patients were classified into a high caspase-8 expression group (H-cas8) and a low caspase-8 expression group (L-cas8).
Results
Caspase-8 signals were detected in cytoplasm and intercalated disks of cardiomyocytes. Patients in the L-cas8 group was younger (51.3±13.1 vs. 61.2±14.3 years old) and had larger left ventricular end-diastolic volume (LVEDV: 174±49 vs. 131±41 ml), larger left ventricular end-systolic volume (LVESV: 123±51 vs. 87±39 ml), and higher ratio of mitral peak velocity of early filling to late diastolic filling (E/A: 1.94±1.48 vs. 1.12±0.66) compared with the H-cas8 group. Caspase-8 expression level was positively correlated with age (r=0.34, p=0.01) and negatively correlated with LVEDV (r=−0.47, p<0.01), LVESV (r=−0.40, p<0.01), and E/A (r=−0.39, p<0.01) in simple linear regression analysis. The extent of myocardial fibrosis was not correlated with caspase-8 expression level. Multiple regression analysis indicated that LVEDV, LVESV, and E/A were independent explanatory factors of caspase-8 expression level after adjusting age and sex. Phospho-MLKL signals, an index of activation of necroptotic pathway, were frequently observed in cytoplasm, intercalated disks, and nuclei in the L-cas8 group but not in the H-cas8 group.
Conclusion
Lower caspase-8 expression in cardiomyocytes was associated with increased phosphorylation of MLKL and larger left ventricular volume, suggesting that downregulated caspase-8 may contribute to progression of myocardial remodeling via activation of MLKL in human dilated cardiomyopathy.
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Ohhara Y, Kojima T, Honjo O, Yamada N, Sato T, Kunisaki M, Takamura K, Takashina T, Sukoh N, Tanaka H, Kawai Y, Fujita Y, Sugaya F, Hommura F, Harada T, Ryoichi H, Kinoshita I, Amano T, Oizumi S, Akita H. Prognostic factors for non-small cell lung cancer patients with driver mutation negative and brain metastases (HOT 1701). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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