51
|
Jujo K, Kagiyama N, Kamiya K, Saito H, Saito K, Ogasahara Y, Maekawa E, Konishi M, Kitai T, Iwata K, Wada H, Kasai T, Nagamatsu H, Ozawa T, Matsue Y. Social frailty provides additive prognostic impact on one-year outcome in aged patients with congestive heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1152] [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: 11/13/2022] Open
Abstract
Abstract
Background
Frailty is associated with multisystem declines in physiologic reserve and increased vulnerability to stressors, resulting in increased risks of adverse clinical outcomes in patients with heart failure (HF). Although frailty is conceptualized as an accumulation of deficits in multiple areas, most of the studies have focused mainly on physical frailty, and the social domains is one of the least investigated area.
Objectives
We prospectively evaluated the incidence and prognostic implication of social frailty (SF) in older patients with HF.
Methods
The FRAGILE-HF is a multicenter, prospective cohort study including patients hospitalized for HF and aged ≥65 years old. We defined SF by Makizako's 5 items, which are 5 questions proposed and validated to be associated with future disability. The primary endpoint of this study was a composite of death from any cause and rehospitalization due to HF. The impact of SF on all-cause mortality alone was also evaluated.
Results
Among 1,240 hospitalized HF patients, 5 simple questions revealed that 825 (66.5%) were in SF. During 1-year observation period after the discharge, the combined endpoint was observed in 399 (32.2%) patients, and 145 (11.7%) patients died. Kaplan-Meier analysis showed that SF patients had significantly higher rates of both the combined endpoint and all-cause mortality than those without SF (Log-rank test: p<0.05 for both, Figures). Moreover, SF remained independently associated with higher event rate of the combined endpoint (hazard ratio: 1.30; 95% confidence interval: 1.02 to 1.66; p=0.038) and all-cause mortality (hazard ratio: 1.53; 95% confidence interval: 1.01 to 2.30; p=0.044), even after adjusting for other covariates. Significant incremental prognostic value was shown when information on social frailty was added to known risk factors for combined endpoint (NRI: 0.189, 95% confidence interval: 0.063–0.316, p=0.003) and all-cause mortality (NRI: 0.234, 95% confidence interval: 0.073–0.395, p=0.004).
Conclusions
Among older hospitalized patients with heart failure, two-thirds of the population was with SF. Evaluating SF provides additive prognostic information in elderly patients with heart failure.
Funding Acknowledgement
Type of funding source: Private grant(s) and/or Sponsorship. Main funding source(s): Novartis Pharma Research Grants, Japan Heart Foundation Research Grant
Collapse
|
52
|
Darras B, Day J, Swoboda K, Chiriboga C, Iannaccone S, De Vivo D, Deconinck N, Finkel R, Tulinius M, Saito K, Montes J, Foster R, Ramirez-Schrempp D, Kandinov B, Wong J, Farwell W. SMA – THERAPY. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
53
|
Strauss K, Farrar M, Swoboda K, Saito K, Chiriboga C, Finkel R, Iannaccone S, Krueger J, Kwon J, McMillan H, Servais L, Mendell J, Parsons J, Scoto M, Shieh P, Zaidman C, Schultz M, Ogrinc F, Group S, Muntoni F. SMA – THERAPY. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
54
|
Tanaka H, Shimada W, Fukuda S, Fukushima H, Moriyama S, Uehara S, Kijima T, Yoshida S, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Campbell S, Fujii Y. Novel classification model of tumour shape irregularity: Significance for predicting potential oncologic risks in clinically localised renal cell carcinoma. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33072-x] [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] Open
|
55
|
Uehara S, Matsuoka Y, Tanaka H, Moriyama S, Tanaka H, Kijima T, Yoshida S, Yokoyama M, Ishioka J, Saito K, Fujii Y. Systematic biopsy cores away from targets are of limited value for the detection of significant cancer: Analysis of prostate biopsy mapping using multiplanar MRI reconstruction. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33757-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
56
|
Yoshida S, Taniguchi N, Moriyama S, Uehara S, Tanaka H, Kijima T, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Fujii Y. Application of virtual reality in patient education about MRI-ultrasound fusion prostate biopsy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33934-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
57
|
Nakamura Y, Yokoyama M, Yoshida S, Tanaka H, Kijima T, Ishioka J, Matsuoka Y, Saito K, Minami I, Yoshimoto T, Naito S, Ogawa Y, Yamada T, Uchida S, Fujii Y. Postoperative renal impairment and longitudinal change in renal function after adrenalectomy in patients with Cushing’s syndrome. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33195-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
58
|
Kato R, Fukushima H, Kijima T, Yoshida S, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Otsuka Y, Koga F, Yano M, Tsukamoto T, Masuda H, Okuno T, Yonese J, Nagahama K, Kamata S, Noro A, Kageyama Y, Tsujii T, Morimoto S, Fujii Y. Predictive performance of the qSOFA score for in-hospital mortality of obstructive pyelonephritis patients: A multi-institutional study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33590-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
59
|
Yoshida S, Takahara T, Arita Y, Ishii C, Toda K, Kijima T, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Yoshimura R, Fujii Y. Treatment outcomes of progressive site-directed therapy for oligo-progressive castration-resistant prostate cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33518-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
60
|
Tamiya T, Kijima T, Tanaka H, Yoshida S, Yokoyama M, Ishioka J, Matsuoka Y, Numao N, Sakai Y, Saito K, Matsubara N, Yuasa T, Masuda H, Yonese J, Kageyama Y, Fujii Y. Association between immune-related adverse events spectrum and efficacy of pembrolizumab in patients with advanced urothelial cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33654-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
61
|
Dutt R, Meagher M, Patil D, Saito K, Patel D, Ghali F, Keiner C, Miller N, Bradshaw A, Wan F, Yasuda Y, Fujii Y, Master V, Derweesh I. Impact of diabetes mellitus on functional and survival outcomes in renal cell carcinoma: An international multicenter study. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32709-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
62
|
Ishioka J, Matsuoka Y, Uehara S, Tanaka H, Kijima T, Yoshida S, Yokoyama M, Saito K, Kimura T, Akimoto R, Kumazawa I, Fujii Y. Development of artificial intelligence to diagnose prostate cancer using multiparametric MR images. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33951-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
63
|
Matsumoto S, Yoshida S, Yamada I, Kijima T, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Tateishi U, Fujii Y. Utility of diffusion-weighted magnetic resonance imaging radiomics features in the differentiation of fat-poor angiomyolipoma from clear cell renal cell carcinoma. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33078-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
64
|
Fujii K, Yamamoto Y, Saito K, Seishima M. 007 Indoleamine 2,3-dioxygenase 2 knockout exacerbates imiquimod-induced psoriasis-like skin inflammation. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
65
|
Fukushima H, Kijima T, Uehara S, Tanaka H, Yoshida S, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Matsubara N, Yuasa T, Masuda H, Yonese J, Kageyama Y, Fujii Y. Previous chemoradiotherapy may enhance the efficacy of pembrolizumab in advanced urothelial carcinoma patients. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33653-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
66
|
Saito K, Matsuoka Y, Yamada KI. Reaction targets of antioxidants in azo-initiator or lipid hydroperoxide induced lipid peroxidation. Free Radic Res 2020; 54:301-310. [PMID: 32338088 DOI: 10.1080/10715762.2020.1761020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Lipid peroxidation (LPO) is reported to be involved in the pathogenesis of several oxidative diseases, and several therapeutic approaches using antioxidants have been proposed. LPO is thought to progress via a complicated series of multistep reactions suggesting that the activity of each antioxidant may be different, and depends on the reacting molecules. Hence, in this study, we evaluated the inhibitory mechanisms of several antioxidants toward arachidonic acid (AA) peroxidation induced by the azo initiator 2,2'-azobis(2-amidinopropane) dihydrochloride (AAPH) or a lipid hydroperoxide, hydroperoxyoctadecadienoic acid (HpODE)/hemin. Edaravone, ferrostatin-1, TEMPO and trolox effectively inhibited the production of malondialdehyde (MDA) and several oxidised AAs generated in the AAPH-induced LPO because of their scavenging ability toward lipid peroxyl radicals. In contrast, ebselen and ferrostatin-1 showed strong antioxidative activity in the HpODE/hemin-induced peroxidation. Under this condition, ebselen and ferrostatin-1 were thought to reduce HpODE and its derived alkoxyl radicals to the corresponding lipid alcohols. In conclusion, we found that each antioxidant had different antioxidative activities that prevented the progression of LPO. We expect that these findings will contribute to the design of novel therapeutic strategies using an appropriate antioxidant targeted to each step of the development of oxidative stress diseases.
Collapse
|
67
|
Woollard DC, Indyk HE, Angyal G, Borbon J, Chase W, Coors U, Davis P, Edwards M, Ellis C, Gore W, Gossard J, Hischenhuber C, Jagodic M, Kerr M, Kmec D, McMahow A, Myers M, Rajamohan R, Saito K, Sullivan D, Tsalkani N, Walker E, Welton K, Wo C, Zaugg S. Taurine Analysis in Milk and Infant Formulae by Liquid Chromatography: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/80.4.860] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
A collaborative study was conducted on a liquid chromatographic (LC) method for determination of taurine in infant formula and milk powders. Twenty laboratories participated in the analysis of 8 blind duplicates over the range of approximately 3–60 mg/100 g sample. The method involved protein removal, conversion to the dansyl-derivative, and isocratic LC separation with UV and/or fluorescence detection. Following outlier treatment, overall mean RSDR has been estimated at 7.00% for sup. plemented products with a HORRAT value of 1.1. The poorer precision at endogenous levels establishes a lower limit of determination of about 5 mg/100 g. An overall mean RSDr:RSDR value of 0.7 for all products demonstrated acceptable performance.
Collapse
|
68
|
Yasuda M, Tachi T, Fukuta M, Kato M, Saito K, Yoshida A, Nagaya K, Setta E, Osawa T, Umeda M, Murakami E, Azuma K, Teramachi H, Goto C. Nutritional factors affecting length of hospital stay in patients undergoing cardiovascular surgery. DIE PHARMAZIE 2019; 74:760-762. [PMID: 31907119 DOI: 10.1691/ph.2019.9650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Cardiovascular surgery is a highly invasive intervention that is often performed in elderly patients at risks of complications because of malnutrition and reduced immunity. This study investigated nutritional factors that affected length of hospital stay in patients undergoing cardiovascular surgery. Among 68 patients who underwent surgery at the Department of Cardiovascular Surgery of Gifu Municipal Hospital between April 2013 and March 2015, 55 with complete data were included in the analysis. Data on serum albumin (ALB), transferrin (Tf), pre-albumin (PA) and retinol binding protein (RBP) levels were collected. The median length of hospital stay was 29 days (stays of ≥30 days were considered long-term hospitalization). Multivariate analysis (multiple logistic regression) included age (≥ 65 years), sex (female), and ALB (≤ 3.0 g/dL), Tf (≤ 150.0 mg/dL), PA (≤ 10.0 mg/dL) and RBP (≤ 1.5 mg/dL) levels. ALB [odds ratio (OR) 10.37, 95% CI (confidence interval): 1.185-90.80, P = 0.035] and Tf [OR 4.743, 95% CI: 1.375-16.36, P = 0.014] were significantly associated with length of hospital stay. Nutritional management of patients and careful monitoring of ALB and Tf levels can shorten length of hospital stay in patients undergoing cardiovascular surgery.
Collapse
|
69
|
Jujo K, Shimazaki K, Furuki Y, Moriyama T, Shiozaki N, Iwanami Y, Arashi H, Hagiwara N, Saito K. P5616Risk stratification of cardiovascular events among patients with functionally non-significant coronary stenosis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0560] [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: 11/12/2022] Open
Abstract
Abstract
Introduction
Deferral of percutaneous coronary intervention (PCI) of a functionally non-significant stenosis is associated with a favorable long-term clinical prognosis. However, to date, there has been limited evidence to stratify the risk for the development of cardiovascular (CV) adverse events in patients who were deferred of PCI due to a greater fractional flow reserve (FFR) than 0.80 at the target lesion.
Purpose
We aimed to stratify the risk of CV events in patients with functionally significant and non-significant coronary stenosis.
Methods
This observational study included 458 patients who were proven angiographically intermediate coronary stenoses and were measured FFR, of whom 298 deferred patients with FFR>0.80 and 160 intervened patients with FFR<0.80. The primary endpoint was the incidence of major adverse cardiac and cerebrovascular events (MACCE) including any death, non-fatal myocardial infarction, hospitalization due to heart failure, ischemic stroke and any unplanned revascularization. ROC curve for MACCE indicated the cut-off point of FFR as 0.85 and 0.76 in deferred patients and intervened patients, respectively.
Results
During the observation period, 27 MACCE (9.1%) in the Deferred group, and 33 MACCE (20.6%) in Intervened group were occurred. Kaplan-Meier curves showed a higher MACCE rate in the Intervened group than Deferred group (hazard ratio (HR): 2.19, 95% confidence interval (CI): 1.29–3.71, Figure A). However, even among patients in the Deferred group, the population with “intermediate” FFR (0.81–0.85) had a significantly higher MACCE rate than those with higher FFR (>0.85) (HR 2.55, 95% CI 1.14–5.69, Figure B). This rate was comparable to that of the Intervened group at the remote phase (at 4-year: 32.0% vs. 35.8%). Conversely, in the Intervened group, there was no statistically significant difference in MACCE rate between patients with higher FFR (0.76–0.80) and those with lower FFR (<0.76) (Log-rank: p=0.21, Figure C).
Conclusion
The population with relatively low FFR in patients who were deferred PCI by FFR>0.80 had comparable MACCE rate to patients with FFR<0.80. Close observation after the FFR evaluation should be considered in those population.
Collapse
|
70
|
Sakai T, Yamauchi Y, Yokote F, Saito Y, Uehara H, Saito K, Sakao Y, Kawamura M. EP1.15-23 Cardiac Tamponade Caused by a Type A Thymoma: A Case Report. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2358] [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]
|
71
|
Strauss K, Swoboda K, Farrar M, McMillan H, Parsons J, Krueger J, Iannaccone S, Chiriboga C, Kwon J, Saito K, Scoto M, Baldinetti F, Schultz M, Kernbauer E, Farrow M, Ogrinc F, Kavanagh S, Feltner D, McGill B, Spector S, L’Italien J, Sproule D, Muntoni F. Onasemnogene abeparvovec gene-replacement therapy (GRT) in presymptomatic spinal muscular atrophy (SMA): SPR1NT study update. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
72
|
Llovet J, Shepard K, Finn R, Ikeda M, Sung M, Baron A, Kudo M, Okusaka T, Kobayashi M, Kumada H, Kaneko S, Pracht M, Mamontov K, Meyer T, Mody K, Kubota T, Saito K, Siegel A, Dubrovsky L, Zhu A. A phase Ib trial of lenvatinib (LEN) plus pembrolizumab (PEMBRO) in unresectable hepatocellular carcinoma (uHCC): Updated results. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.073] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
73
|
Saito K, Kondo Y, Kitahara H, Nakayama T, Fujimoto Y, Kobayashi Y. P4453Predictors of sustained ventricular arrhythmias during late phase in patients with reduced left ventricular ejection fraction after myocardial infarction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0852] [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: 11/13/2022] Open
Abstract
Abstract
Background
Sustained ventricular arrhythmias (VAs) and death are feared events post myocardial infarction (post-MI). Patients with heart failure post-MI have higher risk of VAs, compared to those without heart failure. Although the risk of sudden cardiac arrest and death post-MI isn't small, previous clinical trials have failed to demonstrate the benefit of early use of implantable cardioverter defibrillators. Moreover, little is known about the relationship between the acute phase and the late phase VAs in patients with heart failure post-MI.
Purpose
The aim of this study was to determine the predictors of the late phase VAs in patients with heart failure post MI.
Methods
We retrospectively analyzed our database of MI patients from January 2012 to September 2016.
Results
A total of consecutive 460 post-MI patients were included in this study (age, 67±12 year-old; male, 336 (73%); STEMI, 281 (61%)). All the patients underwent primary percutaneous coronary intervention. Of those, 90 patients (20%) had depressed left ventricular ejection fraction (LVEF) ≤35%. After a mean follow up period of 30±16 months, 45 patients (50%) had VAs after MI. Among them, 35 patients (78%) had VAs within 48 hours after MI onset, 8 patients (18%) within 7 days 48 hours later, and 21 patients (47%) more than 7 days. Cox-regression analysis showed that VAs within 7 days 48 hours later after MI onset was significantly related to sustained VAs more than 7 days after MI onset (Hazard Ratio, 4.97; 95% Confidence Interval, 1.31–18.9; p=0.019).
Conclusions
VAs in the sub-acute phase after MI predicted sustained VAs in the late phase in this population. Prompt initiation of aggressive antiarrhythmic therapies, including catheter ablation, after MI should be considered to reduce the mortality.
Collapse
|
74
|
Inoue K, Arai M, Tsuruoka H, Saito K, Fujisawa M, Nakazawa S, Veerasamy N, Fukushi M. IMPACT ON ABSORBED DOSE RATE IN AIR IN KANTO REGION BY FUKUSHIMA DAIICHI NUCLEAR POWER PLANT ACCIDENT. RADIATION PROTECTION DOSIMETRY 2019; 184:500-503. [PMID: 31330022 DOI: 10.1093/rpd/ncz073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 06/10/2023]
Abstract
Absorbed dose rates in air were measured for the whole area of the Kanto region in 2015, 2016 and 2017 (n = 31 147). The mean absorbed dose rates in air for each prefecture measured by car-borne surveys were from 44 to 67 nGy h-1 (13-289 nGy h-1). The absorbed dose rate in air from artificial radionuclides (134Cs + 137Cs) measured by fixed-point observation (n = 507) was from 1 to 14 nGy h-1 (0-105 nGy h-1), and meaning that the contribution ratios of 134Cs and 137Cs were 3-22%. The deposited location of artificial radionuclides was less than 1000 m from ground level and depended on the topography, wind direction and precipitation field.
Collapse
|
75
|
Saito K, Maeda M. Not just a cargo receptor for large cargoes; an emerging role of TANGO1 as an organizer of ER exit sites. J Biochem 2019; 166:115-119. [PMID: 31098622 DOI: 10.1093/jb/mvz036] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 04/24/2019] [Indexed: 02/07/2023] Open
Abstract
Proteins synthesized within the endoplasmic reticulum (ER) are exported from ER exit sites via coat protein complex II (COPII)-coated vesicles. Although the mechanisms of COPII-vesicle formation at the ER exit sites are highly conserved among species, vertebrate cells secrete a wide range of materials, including collagens and chylomicrons, which form bulky structures within the ER that are too large to fit into conventional carriers. Transport ANd Golgi Organization 1 (TANGO1) was initially identified as a cargo receptor for collagens but has been recently rediscovered as an organizer of ER exit sites. We would like to review recent advances in the mechanism of large cargo secretion and organization of ER exit sites through the function of TANGO1.
Collapse
|
76
|
Baba F, Shibamoto Y, Iwana M, Nomura K, Nagayoshi J, Ono Y, Akiyama K, Yamamoto T, Saito K, Fujioka R, Ueno T. Evaluation of Changes in Respiratory Patterns by Repeating under Different Respiratory Conditions. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
77
|
Saito K, Wang S, Wi H, Kim H, Kamio S, Nomura G, Seki R, Seki T, Kasahara H, Mutoh T. Development of power combination system for high-power and long-pulse ICRF heating in LHD. FUSION ENGINEERING AND DESIGN 2019. [DOI: 10.1016/j.fusengdes.2018.12.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
78
|
Saito K, Nakai Y, Ushiku T, Saito T, Takahara N, Mizuno S, Kogure H, Koike K. Gastrointestinal: Successful diagnosis of primary peritoneal serous carcinoma by endoscopic ultrasound-guided through-the-needle forceps biopsy. J Gastroenterol Hepatol 2019; 34:1271. [PMID: 30693562 DOI: 10.1111/jgh.14593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 11/22/2018] [Accepted: 12/28/2018] [Indexed: 12/09/2022]
|
79
|
Centonze FG, Reiterer V, Nalbach K, Saito K, Pawlowski K, Behrends C, Farhan H. LTK is an ER-resident receptor tyrosine kinase that regulates secretion. J Cell Biol 2019; 218:2470-2480. [PMID: 31227593 PMCID: PMC6683734 DOI: 10.1083/jcb.201903068] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/17/2019] [Accepted: 05/15/2019] [Indexed: 01/03/2023] Open
Abstract
The endoplasmic reticulum (ER) is a major regulator of cellular proteostasis. However, only little is known about signaling molecules resident to this organelle. Centonze et al. identify LTK as the first ER-resident receptor tyrosine kinase and show that it stimulates secretory trafficking out of the ER. The endoplasmic reticulum (ER) is a key regulator of cellular proteostasis because it controls folding, sorting, and degradation of secretory proteins. Much has been learned about how environmentally triggered signaling pathways regulate ER function, but only little is known about local signaling at the ER. The identification of ER-resident signaling molecules will help gain a deeper understanding of the regulation of ER function and thus of proteostasis. Here, we show that leukocyte tyrosine kinase (LTK) is an ER-resident receptor tyrosine kinase. Depletion of LTK as well as its pharmacologic inhibition reduces the number of ER exit sites and slows ER-to-Golgi transport. Furthermore, we show that LTK interacts with and phosphorylates Sec12. Expression of a phosphoablating mutant of Sec12 reduces the efficiency of ER export. Thus, LTK-to-Sec12 signaling represents the first example of an ER-resident signaling module with the potential to regulate proteostasis.
Collapse
|
80
|
Maeda M, Kurokawa K, Katada T, Nakano A, Saito K. COPII proteins exhibit distinct subdomains within each ER exit site for executing their functions. Sci Rep 2019; 9:7346. [PMID: 31089171 PMCID: PMC6517409 DOI: 10.1038/s41598-019-43813-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 05/02/2019] [Indexed: 11/09/2022] Open
Abstract
Secretory proteins are exported from special domains of the endoplasmic reticulum (ER) termed ER exit sites, via COPII-coated carriers. We recently showed that TANGO1 and Sec16 cooperatively organize mammalian ER exit sites for efficient secretion. However, the detailed spatial organization of mammalian ER exit sites is yet to be revealed. Here, we used super-resolution confocal live imaging microscopy (SCLIM) to investigate the localization of endogenous proteins, and we identified domains abundant in transmembrane complexes (TANGO1/cTAGE5/Sec12) juxtaposed to Sec16. Interestingly, this domain can be distinguished from the inner and the outer coats of COPII proteins within each mammalian ER exit site. Cargoes are partially concentrated in the domain for secretion. Our results suggest that mammalian ER exit sites compartmentalize proteins according to their function in COPII vesicle formation.
Collapse
|
81
|
Saito K, Hishiki Y, Takahashi H. <p>Validation of two automatic devices, Omron HEM-6232T and HEM-6181, for self-measurement of blood pressure at the wrist according to the ANSI/AAMI/ISO 81060-2:2013 protocol and the European Society of Hypertension International Protocol revision 2010 [Corrigendum]</p>. Vasc Health Risk Manag 2019; 15:137. [PMID: 31190851 PMCID: PMC6530549 DOI: 10.2147/vhrm.s214629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 05/06/2019] [Indexed: 11/23/2022] Open
|
82
|
Tasaki M, Kasahara T, Kaidu M, Kawaguchi G, Hara N, Yamana K, Maruyama R, Takizawa I, Ishizaki F, Saito K, Nakagawa Y, Ikeda M, Umezu H, Nishiyama T, Aoyama H, Tomita Y. Low-Dose-Rate and High-Dose-Rate Brachytherapy for Localized Prostate Cancer in ABO-Incompatible Renal Transplant Recipients. Transplant Proc 2019; 51:774-778. [DOI: 10.1016/j.transproceed.2018.10.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 10/09/2018] [Indexed: 02/06/2023]
|
83
|
Yoshida S, Tanaka H, Kijima T, Yokoyama M, Ishioka J, Matsuoka Y, Saito K, Fujii Y. Vesical imaging-reporting and data system (VI-RADS) for bladder cancer staging with multiparametric MRI. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1569-9056(19)30463-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
84
|
Powell CA, Camidge DR, Gemma A, Kusumoto M, Baba T, Kuwano K, Bankier A, Kiura K, Tamura K, Modi S, Tsurutani J, Doi T, Iwata H, Krop IE, Zhang L, Jasmeet S, Saito K, Shahidi J, Yver A, Takahashi S. Abstract P6-17-06: Characterization, monitoring and management of interstitial lung disease in patients with metastatic breast cancer: Analysis of data available from multiple studies of DS-8201a, a HER2-targeted antibody drug conjugate with a topoisomerase I inhibitor payload. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p6-17-06] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Several classes of anti-cancer agents including certain immunotherapies, systemic chemotherapies, and targeted therapies including trastuzumab and T-DM1 increase the risk of interstitial lung disease (ILD) and fatal cases have been reported. For DS-8201a, interim efficacy and safety analyses of available data established a final recommended dose of 5.4 mg/kg IV q3wk in advanced HER2-positive breast cancer (BC). Based on preliminary clinical results, ILD was identified as an important risk for DS-8201a. A robust monitoring and management plan was established across all studies and an international, independent ILD adjudication committee (AC) reviews the cases reported as ILD on an ongoing basis.
Methods: All subjects (sbj) who received ≥1 dose of DS-8201a across 7 ongoing studies were included in this analysis. Reported ILD (standardized MedDRA Query terms) included the terms ILD, pneumonitis, and organizing pneumonia. ILD frequencies were calculated based on investigator's assessment and after adjudication. The analysis of potential risk factors associated with ILD is ongoing.
Results: As of 21 June 2018, 448 sbj received ≥1 dose of DS-8201a across multiple tumor types, including BC. Of the 321 sbj with BC, 173 (53.9%) were from Japan, 103 (32.1%) from the US, and 45 (14.0%) from 6 other countries (Spain, South Korea, Taiwan, Belgium, France, and Italy). These sbj received 1 of 7 doses of DS-8201a (0.8 mg/kg: 3 sbjs, 1.6 mg/kg: 1 sbj, 3.2 mg/kg: 3 sbjs, 5.4 mg/kg: 111 sbjs, 6.4 mg/kg: 178 sbj, 7.4 mg/kg: 20 sbj, 8.0 mg/kg: 5 sbj). Overall, 44 cases of potential ILD were reported by the investigators across all tumor types (44/448, 9.8%; Grade ≥3 10/448, 2.2%). In sbj with BC who received 5.4 mg/kg, any grade and Grade ≥3 investigator-reported ILD were 7.2% (8/111) and 0.9% (1/111), respectively. The ILD AC assessed 30 of 44 cases; 22 were considered drug-related ILD, 4 were ILD but not drug-related, and 4 were found not to be ILD. For adjudicated drug-related ILD cases, the median time to onset was 159 (range; 46-591) days from the time of first dose.
Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 All Grades All tumors, All doses (N=448) Investigator-reported20 (4.5)14 (3.1)4 (0.9)1 (0.2)5 (1.1)44 (9.8)Cases adjudicated13840530Adjudicated as drug-related ILD9 (2.0)6 (1.3)3 (0.7)04 (0.9)22 (4.9) BC, All doses (N=321) Investigator-reported17 (5.3)11 (3.4)3 (0.9)1 (0.3)4 (1.2)36 (11.2)Cases adjudicated11830426Adjudicated as drug-related ILD8 (2.5)6 (1.9)3 (0.9)04 (1.2)21 (6.5) BC, 5.4 mg/kg (N=111) Investigator-reported4 (3.6)3 (2.7)001 (0.9)8 (7.2)Cases adjudicated120014Adjudicated as drug-related ILD00001 (0.9)1 (0.9)n (%), except where noted
Conclusions: These analyses confirm that ILD is an important identified risk for DS-8201a. Further analyses are ongoing to better understand the potential risk factors associated with the incidence of on-treatment ILD. When ILD is suspected, early diagnosis through appropriate imaging, laboratory tests, and pulmonary consultation as well as prompt management with steroids are recommended.
Citation Format: Powell CA, Camidge DR, Gemma A, Kusumoto M, Baba T, Kuwano K, Bankier A, Kiura K, Tamura K, Modi S, Tsurutani J, Doi T, Iwata H, Krop IE, Zhang L, Jasmeet S, Saito K, Shahidi J, Yver A, Takahashi S. Characterization, monitoring and management of interstitial lung disease in patients with metastatic breast cancer: Analysis of data available from multiple studies of DS-8201a, a HER2-targeted antibody drug conjugate with a topoisomerase I inhibitor payload [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P6-17-06.
Collapse
|
85
|
Hughes T, Simon GP, Saito K. Photocuring of 4-arm coumarin-functionalised monomers to form highly photoreversible crosslinked epoxy coatings. Polym Chem 2019. [DOI: 10.1039/c8py01767k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Highly photoreversible photocurable crosslinked epoxy coatings that can heal substantial surface damage were formed by the synthesis of unique monomers.
Collapse
|
86
|
Kojima N, Kim M, Saito K, Yoshida Y, Hirano H, Obuchi S, Suzuki T, Kim H. DAILY CONSUMPTION OF SOY, VEGETABLES, AND OILS MAY HELP PREVENT ADL DECLINE IN OLDER WOMEN: A LONGITUDINAL STUDY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2621] [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
|
87
|
Shitara K, Bang YJ, Sakai D, Yasui H, Kawaguchi Y, Sugihara M, Saito K, Dalal R, Yamaguchi K. A randomized, phase II, multicenter, open-label study of trastuzumab deruxtecan (DS-8201a) in subjects with HER2-expressing gastric cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.058] [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
|
88
|
Nagano M, Saito K, Kozuka Y, Shibusawa M, Imai N, Noro A, Kageyama Y, Mizuno T, Ogawa T, Katayama N. PD-L1 expression on circulating monocytes in patients with breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy427.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
89
|
Castro D, Farrar M, Finkel R, Tulinius M, Krosschell K, Saito K, Zhang Y, Bhan I, Farwell W, Reyna S. SMA THERAPIES I. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
90
|
Yoshino T, Iwata H, Tamura K, Takahashi S, Redfern C, Modi S, Doi T, Kawakami H, Taniguchi H, Takashima A, Yamaguchi K, Fisher J, Li B, Saito K, Fujisaki Y, Sugihara M, Tsurutani J. Updated results of phase I study of trastuzumab deruxtecan (DS-8201a) in HER2-expressing advanced colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
91
|
Nagane M, Saito K, Shimizu S, Nozaki E, Kobayashi K, Kume S, Chiba T, Shibahara J, Shiokawa Y. P04.19 Detailed analysis of mutation change after treatment in glioblastoma. Neuro Oncol 2018. [DOI: 10.1093/neuonc/noy139.253] [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
|
92
|
Jwa S, Nakashima A, Kuwahara A, Saito K, Irahara M, Sakumoto T, Ishihara O, Saito H. Ovarian stimulation using clomiphene citrate and adverse perinatal outcomes in pregnancies following fresh single-embryo transfers. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
93
|
Hirono K, Hata Y, Takarada S, Miyao N, Okabe M, Saito K, Ozawa SW, Nishida N, Ichida F. P2252Cardiomyopathy phenotypes and genotypes for children with left ventricular noncompaction. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
94
|
Saito K, Saito Y, Kitahara H, Nakayama T, Fujimoto Y, Kobayashi Y. P5130In-hospital blood pressure variability as a novel prognostic factor in patients with stable coronary artery disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
95
|
Yamanishi J, Sano H, Saito K, Furuta Y, Fukuzaki H. Plasma Concentrations of Platelet-Specific Proteins in Different Stages of Essential Hypertension: Interactions between Platelet Aggregation, Blood Lipids and Age. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1657892] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryPlasma β-thromboglobulin (βTG) and platelet factor 4 (PF4) were significantly higher in a group of 116 hypertensive men than in a normotensive group of 142 men. They increased with the stage of hypertension but the level did not correlate with the age of the subjects. Platelet aggregation was similar in the two groups and positively correlated with the age of the subjects in the normotensive group but not in the hypertensive group. A strong positive correlation was observed between the levels of plasma βTG and PF4 and between platelet aggregation to ADP and that to epinephrine in both the hypertensive and normotensive groups. However, there was no correlation between the level of plasma βTG or PF4 and platelet aggregation. Plasma antithrombin III was lower in the hypertensive group than in the normotensive group.These studies suggest that plasma levels of PTG and PF4 are closely related to the stage of hypertension and are better indicators than aggregation of in vivo platelet activation in hypertensive subjects. Enhanced platelet activation may be involved in the acceleration of hypertensive arteriovascular damage and atherosclerosis.
Collapse
|
96
|
Sakai A, Okami K, Ebisumoto K, Yamamoto H, Saito K, Maki D, Furuya H, Iida M. How to improve the endoscopic view of the hypopharynx: Validation of our novel modified Killian's Method to expose the hypopharynx in 20 subjects. Clin Otolaryngol 2018; 43:1407-1410. [PMID: 29920948 DOI: 10.1111/coa.13172] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2018] [Indexed: 11/30/2022]
|
97
|
Saito K, Fujimoto K, Higashi K, Miki N. Microbes Culture System Using Cellulose Tubes and Photocatalyst-Coated Glass Balls. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2018; 2018:5741-5744. [PMID: 30441640 DOI: 10.1109/embc.2018.8513570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Currently, microbes are utilized in many fields, such as medicine, food and environment etc. For more application of microbes, we need a new culture system, which can culture target microbes in large quantities at low cost. Thereupon, we propose a culture system using cellulose tubes. Target microbes are encapsulated inside the cellulose tubes, where they acquire nutrients and oxygen through nano pores of the tubes and are protected from competitive microbes even in open environment. To further increase the amount of oxygen and nutritions available for the target microbes, we propose photocatalyst-coated glass balls (PCGB) to sterilize competing microbes outside the tubes. We experimentally verified the effectiveness of the proposed culture system by culturing Coryne gultamicum as the target microbes.
Collapse
|
98
|
Shobugawa Y, Tashiro A, Saitoh A, Saito K, Manabe T, Saito R, Kondo K, Kawachi I. Social determinants of pneumococcal vaccination status in Japanese elders. Rev Epidemiol Sante Publique 2018. [DOI: 10.1016/j.respe.2018.05.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
99
|
Ogawa E, Mukai K, Saito K, Arai H, Taguchi T. The binding of TBK1 to STING requires exocytic membrane traffic from the ER. Biochem Biophys Res Commun 2018; 503:138-145. [PMID: 29870684 DOI: 10.1016/j.bbrc.2018.05.199] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 05/29/2018] [Indexed: 10/14/2022]
Abstract
Stimulator of interferon genes (STING) is essential for the type I interferon and pro-inflammatory responses against DNA pathogens. In response to the presence of cytosolic DNA, STING translocates from the endoplasmic reticulum (ER) to the Golgi, and activates TANK-binding kinase 1 (TBK1), a cytosolic kinase that is essential for the activation of STING-dependent downstream signalling. The organelles where TBK1 binds to STING remain unknown. Here we show that TBK1 binds to STING at the Golgi, not at the ER. Treatment with brefeldin A, an agent to block ER-to-Golgi traffic, or knockdown of Sar1, a small GTPase that regulates coat protein complex II (COP-II)-mediated ER-to-Golgi traffic, inhibited the binding of TBK1 to STING. Endogenous TBK1 was recruited to the Golgi when STING was transported to the Golgi, as shown by immunofluorescence microscopy. STING variants that constitutively induce the type I interferon response were found in patients with autoinflammatory diseases. Even these disease-causative STING variants could not bind to TBK1 when the STING variants were trapped in the ER. These results demonstrate that the Golgi is an organelle at which STING recruits and activates TBK1 for triggering the STING-dependent type I interferon response.
Collapse
|
100
|
Nakatomi M, Ida-Yonemochi H, Nakatomi C, Saito K, Kenmotsu S, Maas RL, Ohshima H. Msx2 Prevents Stratified Squamous Epithelium Formation in the Enamel Organ. J Dent Res 2018; 97:1355-1364. [PMID: 29863959 DOI: 10.1177/0022034518777746] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Tooth enamel is manufactured by the inner enamel epithelium of the multilayered enamel organ. Msx2 loss-of-function mutation in a mouse model causes an abnormal accumulation of epithelial cells in the enamel organ, but the underlying mechanism by which Msx2 regulates amelogenesis is poorly understood. We therefore performed detailed histological and molecular analyses of Msx2 null mice. Msx2 null ameloblasts and stratum intermedium (SI) cells differentiated normally in the early stages of amelogenesis. However, during subsequent developmental stages, the outer enamel epithelium (OEE) became highly proliferative and transformed into a keratinized stratified squamous epithelium that ectopically expressed stratified squamous epithelium markers, including Heat shock protein 25, Loricrin, and Keratin 10. Moreover, expression of hair follicle-specific keratin genes such as Keratin 26 and Keratin 73 was upregulated in the enamel organ of Msx2 mutants. With the accumulation of keratin in the stellate reticulum (SR) region and subsequent odontogenic cyst formation, SI cells gradually lost the ability to differentiate, and the expression of Sox2 and Notch1 was downregulated, leading to ameloblast depolarization. As a consequence, the organization of the Msx2 mutant enamel organ became disturbed and enamel failed to form in the normal location. Instead, there was ectopic mineralization that likely occurred within the SR. In summary, we show that during amelogenesis, Msx2 executes a bipartite function, repressing the transformation of OEE into a keratinized stratified squamous epithelium while simultaneously promoting the development of a properly differentiated enamel organ competent for enamel formation.
Collapse
|