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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Fuel-Composition Dependent Reactor Antineutrino Yield at RENO. PHYSICAL REVIEW LETTERS 2019; 122:232501. [PMID: 31298906 DOI: 10.1103/physrevlett.122.232501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 05/16/2019] [Indexed: 06/10/2023]
Abstract
We report a fuel-dependent reactor electron antineutrino (ν[over ¯]_{e}) yield using six 2.8 GW_{th} reactors in the Hanbit nuclear power plant complex, Yonggwang, Korea. The analysis uses 850 666 ν[over ¯]_{e} candidate events with a background fraction of 2.0% acquired through inverse beta decay (IBD) interactions in the near detector for 1807.9 live days from August 2011 to February 2018. Based on multiple fuel cycles, we observe a fuel ^{235}U dependent variation of measured IBD yields with a slope of (1.51±0.23)×10^{-43} cm^{2}/fission and measure a total average IBD yield of (5.84±0.13)×10^{-43} cm^{2}/fission. The hypothesis of no fuel-dependent IBD yield is ruled out at 6.6σ. The observed IBD yield variation over ^{235}U isotope fraction does not show significant deviation from the Huber-Mueller (HM) prediction at 1.3 σ. The measured fuel-dependent variation determines IBD yields of (6.15±0.19)×10^{-43} and (4.18±0.26)×10^{-43} cm^{2}/fission for two dominant fuel isotopes ^{235}U and ^{239}Pu, respectively. The measured IBD yield per ^{235}U fission shows the largest deficit relative to the HM prediction. Reevaluation of the ^{235}U IBD yield per fission may mostly solve the reactor antineutrino anomaly (RAA) while ^{239}Pu is not completely ruled out as a possible contributor to the anomaly. We also report a 2.9 σ correlation between the fractional change of the 5 MeV excess and the reactor fuel isotope fraction of ^{235}U.
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Lee KE, Shin SW, Kim GT, Choi JH, Shim EB. Prediction of Plaque Progression in Coronary Arteries Based on a Novel Hemodynamic Index Calculated From Virtual Stenosis Method. Front Physiol 2019; 10:400. [PMID: 31133862 PMCID: PMC6526757 DOI: 10.3389/fphys.2019.00400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 03/22/2019] [Indexed: 01/07/2023] Open
Abstract
Rationale Predicting the sites in coronary arteries that are susceptible to plaque deposition is essential for the development of clinical treatment strategies and prevention. However, to date, no physiological biomarkers for this purpose have been developed. We hypothesized that the possibility of plaque deposition at a specific site in the coronary artery is associated with wall shear stress (WSS) and fractional flow reserve (FFR). Background and Objective We proposed a new biomarker called the stenosis susceptibility index (SSI) using the FFR and WSS derived using virtual stenosis method. To validate the clinical efficacy of this index, we applied the method to actual pilot clinical cases. This index non-invasively quantifies the vasodilation effects of vascular endothelial cells relative to FFR variation at a specific coronary artery site. Methods and Results Using virtual stenosis method, we computed maximum WSS and FFR according to the variation in stenotic severity at each potential stenotic site and then plotted the variations of maximum WSS (y-axis) and FFR (x-axis). The slope of the graph indicated a site-specific SSI value. Then we determined the most susceptible sites for plaque deposition by comparing SSI values between the potential sites. Applying this method to seven patients revealed 71.4% in per-patient basis analysis 77.8% accuracy in per-vessel basis analysis in percutaneous coronary intervention (PCI) site prediction. Conclusion The SSI index can be used as a predictive biomarker to identify plaque deposition sites. Patients with relatively smaller SSI values also had a higher tendency for myocardial infarction. In conclusion, sites susceptible to plaque deposition can be identified using the SSI index.
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Baek SY, Kim JH, Kim G, Choi JH, Jeong CY, Ryu KH, Park DH. Successful one-lung ventilation by blocking the right intermediate bronchus in a 7-year-old child: a case report. J Int Med Res 2019; 47:2740-2745. [PMID: 31068034 PMCID: PMC6567731 DOI: 10.1177/0300060519845782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
A 7-year-old child underwent surgical excision of a benign mesothelioma of the pleura near the right lower lung. Although insertion of a wire-reinforced endotracheal tube through the left main bronchus was attempted for one-lung ventilation to secure the surgical field of view, the attempt failed. Therefore, an endotracheal tube was inserted into the trachea, and an Arndt endobronchial blocker (Cook Medical, Bloomington, IN, USA) was placed in the right intermediate bronchus under bronchoscopic guidance to selectively block the right lower and middle lobes. The surgery was performed while ventilating the right upper lobe and left lung, and no specific intraoperative adverse events occurred.
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Kim CH, Koo BK, Lee JM, Shin ES, Park J, Choi KH, Hwang D, Rhee TM, Zhang J, Choi JH, Doh JH, Nam CW, Wang JA, Chen S, Kuramitsu S, Tanaka N, Matsuo H, Akasaka T. TCTAP A-129 Influence of Sex on Relationship Between Total Anatomical and Physiologic Disease Burden and Their Prognostic Implications in Patients with Coronary Artery Disease. J Am Coll Cardiol 2019. [DOI: 10.1016/j.jacc.2019.03.175] [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: 11/25/2022]
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Choi JM, Choi JH, Kang M, Jang YJ. TCTAP A-076 Time Dependent Association Between Red Blood Cell Transfusion and Long-term Clinical Outcomes in Patients Undergoing Percutaneous Coronary Intervention: A Korean Nationwide Longitudinal Cohort Study. J Am Coll Cardiol 2019. [DOI: 10.1016/j.jacc.2019.03.113] [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: 10/27/2022]
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Yang JH, Lee JM, Park TK, Song YB, Hahn JY, Choi JH, Choi SH, Yu CW, Chun WJ, Oh JH, Koo BK, Jeong JO, Kim HS, Gwon HC. The Proximal Optimization Technique Improves Clinical Outcomes When Treated without Kissing Ballooning in Patients with a Bifurcation Lesion. Korean Circ J 2019; 49:485-494. [PMID: 30891962 PMCID: PMC6554581 DOI: 10.4070/kcj.2018.0352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/17/2018] [Accepted: 01/16/2019] [Indexed: 11/11/2022] Open
Abstract
Background and Objectives There are limited data regarding the clinical efficacy of the proximal optimization technique (POT) in the treatment of coronary bifurcation lesions. We investigated the influence of POT on the clinical outcomes of patients with coronary bifurcation lesions. Methods We enrolled a total of 1,191 patients with a bifurcation lesion with a side branch (SB) diameter ≥2.5 mm treated with a drug-eluting stent from 18 centers between January 2003 and December 2009. The primary outcome was major adverse cardiac events (MACEs: cardiac death, myocardial infarction or target lesion revascularization [TLR]). We performed one-to-many (1:N) propensity score matching with non-fixed matching ratio. Results POT was performed in 252 patients. During follow-up (median 37 months), the incidence of MACE was lower in the POT group than it was in the non-POT group (adjusted hazard ratio, 0.43; 95% confidence interval [CI], 0.24–0.79; p=0.006). After propensity score matching, these were 0.34; 95% CI, 0.17–0.69; p=0.003 for MACE and 0.37; 95% CI, 0.17–0.78; p=0.01 for TLR. The use of POT was associated with significantly lower TLR in patients treated without kissing ballooning, but was not in those who underwent kissing ballooning (p for interaction=0.03). Conclusions In coronary bifurcation lesions with a large SB, POT may be beneficial to improve long-term clinical outcome, particularly in patients treated without kissing ballooning during the procedure. Trial Registration ClinicalTrials.gov Identifier: NCT01642992
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Park J, Lee M, Kim J, Choi HJ, Kwon A, Chung HS, Hong SH, Park CS, Choi JH, Chae MS. Intraoperative Management to Prevent Cardiac Collapse in a Patient With a Recurrent, Large-volume Pericardial Effusion and Paroxysmal Atrial Fibrillation During Liver Transplantation: A Case Report. Transplant Proc 2019; 51:568-574. [PMID: 30879592 DOI: 10.1016/j.transproceed.2018.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 12/29/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pericardial effusion is a common feature of end-stage liver disease. In this case report we describe the intraoperative management of recurrent pericardial effusion, without re-pericardiocentesis, to prevent circulatory collapse during a critical surgical time-point; that is, during manipulation of the major vessels and graft reperfusion. METHODS A 47-year-old woman with hepatitis B was scheduled to undergo deceased donor liver transplantation (LT). A large pericardial effusion was preoperatively identified using transthoracic echocardiography (TTE). The patient also had paroxysmal atrial fibrillation. Two days before surgery, preemptive pericardiocentesis was performed and the 1150-mL effusion was drained. Intraoperatively, recurrence of the large pericardial effusion was identified using transesophageal echocardiography (TEE). During inferior vena cava manipulation, the surgeon consulted the anesthesiologist to evaluate the hemodynamic changes in the patient. After 3 attempts, the transplant team was able to determine the most appropriate anastomosis site, defined as that with the least impact on cardiac function. To prevent the development of severe postreperfusion syndrome, 10% MgSO4 (2 g) was gradually infused 20 minutes before portal vein declamping, and immediately before graft reperfusion a 100-μg bolus of epinephrine was administered. RESULTS During graft reperfusion, there was no evidence of heart chamber collapse or flow disturbance, as seen on the TEE findings. Postoperatively, the patient recovered completely and was discharged from the hospital. Six months after surgery, there was no sign of pericardial effusion on follow-up TTE. CONCLUSION Our intraoperative strategy may prevent cardiac collapse in patients with pericardial effusion detected during LT. Intraoperative TEE plays an important role in guiding hemodynamic management.
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You MS, Ryu JK, Choi YH, Choi JH, Huh G, Paik WH, Lee SH, Kim YT. Efficacy of Nab-Paclitaxel Plus Gemcitabine and Prognostic Value of Peripheral Neuropathy in Patients with Metastatic Pancreatic Cancer. Gut Liver 2019; 12:728-735. [PMID: 30400731 PMCID: PMC6254624 DOI: 10.5009/gnl18220] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/23/2018] [Accepted: 07/24/2018] [Indexed: 12/14/2022] Open
Abstract
Background/Aims The combination of nab-paclitaxel and gemcitabine (nab-P/Gem) is widely used for treating metastatic pancreatic cancer (MPC). We aimed to evaluate the therapeutic outcomes and prognostic role of treatment-related peripheral neuropathy in patients with MPC treated with nab-P/Gem in clinical practice. Methods MPC patients treated with nab-P/Gem as the first-line chemotherapy were included. All 88 Korean patients underwent at least two cycles of nab-P/Gem combination chemotherapy (125 and 1,000 mg/m2, respectively). Treatment-related adverse events were monitored through periodic follow-ups. Overall survival and progression-free survival were estimated by the Kaplan-Meier method, and the Cox proportional hazards regression linear model was applied to assess prognostic factors. To evaluate the prognostic value of treatment-related peripheral neuropathy, the landmark point analysis was used. Results Patients underwent a mean of 6.7±4.2 cycles during 6.3±4.4 months. The median overall survival and progression-free survival rates were 14.2 months (95% confidence interval [CI], 11.8 to 20.3 months) and 8.4 months (95% CI, 7.1 to 13.2 months), respectively. The disease control rate was 84.1%; a partial response and stable disease were achieved in 30 (34.1%) and 44 (50.0%) patients, respectively. Treatment-related peripheral neuropathy developed in 52 patients (59.1%), and 13 (14.8%) and 16 (18.2%) patients experienced grades 2 and 3 neuropathy, respectively. In the landmark model, at 6 months, treatment-related peripheral neuropathy did not have a significant correlation with survival (p=0.089). Conclusions Nab-P/Gem is a reasonable choice for treating MPC, as it shows a considerable disease control rate while the treatment-related peripheral neuropathy was tolerable. The prognostic role of treatment-related neuropathy was limited.
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Choi YH, Lee JW, Lee SH, Choi JH, Kang J, Lee BS, Paik WH, Ryu JK, Kim YT. A High Monocyte-to-Lymphocyte Ratio Predicts Poor Prognosis in Patients with Advanced Gallbladder Cancer Receiving Chemotherapy. Cancer Epidemiol Biomarkers Prev 2019; 28:1045-1051. [PMID: 30842131 DOI: 10.1158/1055-9965.epi-18-1066] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/26/2018] [Accepted: 02/25/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Monocyte-to-lymphocyte ratio (MLR), neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) have been reported to be prognostic markers in various cancers. However, the prognostic value of these inflammatory biomarkers, particularly MLR, in gallbladder cancer remains to be determined. METHODS From 2005 to 2016, 178 patients with histologically confirmed gallbladder adenocarcinoma who underwent palliative chemotherapy were queried in this study. The association between survival and various clinical and laboratory variables, including MLR, NLR, and PLR, was investigated. The optimal cutoff values for MLR, NLR, and PLR were determined using the maxstat package of R. RESULTS Patients with high MLR (>0.24) were expected to have shorter progression-free survival [PFS; hazard ratio (HR), 2.100; 95% confidence interval (CI), 1.397-3.157; P < 0.001] and overall survival (OS; HR, 2.533; 95% CI, 1.664-3.856; P < 0.001) compared with patients with low MLR (≤0.24). In multivariate Cox model, CA 19-9, stage, and MLR were independent factors for PFS. MLR was also an independent predictor of OS along with PLR, age, and CA 19-9, whereas NLR was not significantly associated with OS. Time-dependent receiver operating characteristic (ROC) analysis showed that the area under the curve of MLR for predicting OS was greater than that of NLR and PLR at most time points. CONCLUSIONS MLR independently predicts survival in gallbladder cancer patients undergoing chemotherapy. Future prospective studies are needed to validate its value as a prognostic biomarker. IMPACT MLR is an inexpensive and easily available biomarker for predicting prognosis in patients with gallbladder cancer undergoing chemotherapy.
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You MS, Ryu JK, Choi YH, Choi JH, Huh G, Paik WH, Lee SH, Kim YT. Therapeutic outcomes and prognostic factors in unresectable gallbladder cancer treated with gemcitabine plus cisplatin. BMC Cancer 2019; 19:10. [PMID: 30611225 PMCID: PMC6321682 DOI: 10.1186/s12885-018-5211-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 12/12/2018] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Gallbladder cancer (GBC) is likely to be diagnosed at progressive stages and shows a very poor prognosis. Combination therapy with gemcitabine and cisplatin (GEMCIS) has been widely used as first-line palliative chemotherapy for advanced GBC. This study was designed to investigate the efficacy of GEMCIS and identify prognostic factors in patients with unresectable GBC. METHODS Patients with GBC who were treated with GEMCIS from January 2008 to June 2017 in a single tertiary hospital were included. All cases of GBC were diagnosed by pathologic findings and extent of the tumour was assessed by imaging tests. Combination chemotherapy consisted of cisplatin 25 mg/m2 and gemcitabine 1000 mg/m2 intravenously on days 1 and 8 every 3 weeks. To determine factors affecting prognosis, Kaplan-Meier survival analysis, log-rank test and the Cox proportional hazard regression linear model were used. All variables with P < 0.1 in univariable analysis were included in the multivariable model. RESULTS A total of 173 patients received a median of 5.3 ± 4.4 cycles of chemotherapy over 3.8 ± 3.9 months. Most of the patients (94.8%) were stage IVB at the time of diagnosis and the most common site of metastasis was the liver (42.8%). Disease control rate was 59.5%: 2 (1.2%) patients with complete response, 26 (15.0%) patients with partial response and 75 (43.4%) patients with stable disease. Overall survival (OS) and progression-free survival were 8.1 (95% confidence interval [CI], 7.1-10.2) and 5.6 (95% CI 4.5-6.8) months, respectively. Multivariable regression model indicated that metastasis to liver (hazard ratio [HR] = 1.63, 95% CI 1.11-2.40; P = 0.013), neutrophil-to-lymphocyte ratio (NLR) ≥3 (HR 1.65, 95% CI 1.09-2.49; P = 0.017), CEA ≥ 5 ng/mL (HR 1.50, 95% CI 1.02-2.19; P = 0.038), and CA19-9 ≥ 500 U/mL (HR 1.59, 95% CI 1.01-2.50; P = 0.043) were significantly associated with OS. CONCLUSIONS GEMCIS demonstrated a high disease control rate in patients with unresectable GBC. Factors independently related to OS were metastasis to liver, NLR ≥ 3, CEA ≥ 5 ng/mL and CA19-9 ≥ 500 U/mL.
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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO. PHYSICAL REVIEW LETTERS 2018; 121:201801. [PMID: 30500262 DOI: 10.1103/physrevlett.121.201801] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/13/2018] [Indexed: 06/09/2023]
Abstract
The RENO experiment reports more precisely measured values of θ_{13} and |Δm_{ee}^{2}| using ∼2200 live days of data. The amplitude and frequency of reactor electron antineutrino (ν[over ¯]_{e}) oscillation are measured by comparing the prompt signal spectra obtained from two identical near and far detectors. In the period between August 2011 and February 2018, the far (near) detector observed 103 212 (850 666) ν[over ¯]_{e} candidate events with a background fraction of 4.8% (2.0%). A clear energy and baseline dependent disappearance of reactor ν[over ¯]_{e} is observed in the deficit of the measured number of ν[over ¯]_{e}. Based on the measured far-to-near ratio of prompt spectra, we obtain sin^{2}2θ_{13}=0.0896±0.0048(stat)±0.0047(syst) and |Δm_{ee}^{2}|=[2.68±0.12(stat)±0.07(syst)]×10^{-3} eV^{2}.
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Song PS, Park KT, Kim MJ, Jeon KH, Park JS, Choi RK, Song YB, Choi SH, Choi JH, Lee SH, Gwon HC, Jeong JO, Im ES, Kim SW, Chun WJ, Oh JH, Hahn JY. Safety and Efficacy of Biodegradable Polymer-biolimus-eluting Stents (BP-BES) Compared with Durable Polymer-everolimus-eluting Stents (DP-EES) in Patients Undergoing Complex Percutaneous Coronary Intervention. Korean Circ J 2018; 49:69-80. [PMID: 30468035 PMCID: PMC6331317 DOI: 10.4070/kcj.2018.0097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/30/2018] [Accepted: 07/24/2018] [Indexed: 11/13/2022] Open
Abstract
Background and Objectives There are no data comparing clinical outcomes of complex percutaneous coronary intervention (PCI) between biodegradable polymer-biolimus-eluting stents (BP-BES) and durable polymer-everolimus-eluting stents (DP-EES). We sought to evaluate the safety and efficacy of BP-BES compared with DP-EES in patients undergoing complex PCI. Methods Patients enrolled in the SMART-DESK registry were stratified into 2 categories based on the complexity of PCI. Complex PCI was defined as having at least one of the following features: unprotected left main lesion, ≥2 lesions treated, total stent length >40 mm, minimal stent diameter ≤2.5 mm, or bifurcation as target lesion. The primary outcome was target lesion failure (TLF), defined as a composite of cardiac death, target vessel-related myocardial infarction (TV-MI), or target lesion revascularization (TLR) at 2 years of follow-up. Results Of 1,999 patients, 1,145 (57.3%) underwent complex PCI: 521 patients were treated with BP-BES and 624 with DP-EES. In propensity-score matching analysis (481 pairs), the risks of TLF (3.8% vs. 5.2%, adjusted hazard ratio [HR], 0.578; 95% confidence interval [CI], 0.246–1.359; p=0.209), cardiac death (2.5% vs. 2.5%, adjusted HR, 0.787; 95% CI, 0.244–2.539; p=0.689), TV-MI (0.5% vs. 0.4%, adjusted HR, 1.128; 95% CI, 0.157–8.093; p=0.905), and TLR (1.1% vs. 2.9%, adjusted HR, 0.390; 95% CI, 0.139–1.095; p=0.074) did not differ between 2 stent groups after complex PCI. Conclusions Clinical outcomes of BP-BES were comparable to those of DP-EES at 2 years after complex PCI. Our data suggest that use of BP-BES is acceptable, even for complex PCI.
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Hwang KW, Choi JH, Jung SM, Kim YS, Lee SY, Chon MK, Lee SH, Kim JS, Park YH, Kim JH, Chun KJ, Je HG, Lee SK, Choi HO. P1520Defining the blanking period after maze procedure for atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1520] [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
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Kim YS, Hwang KW, Choi HO, Jung SM, Choi JH, Lee SY, Chun MK, Lee SH, Kim JS, Je HG, Park YH, Kim JH, Lee SK, Chun KJ. P4815Incidence of incomplete surgical left atrial appendage closure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4815] [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
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Choe JC, Cha KS, Shin JY, Lee SH, Ahn J, Park JS, Lee HW, Oh JH, Choi JH, Lee HC, Hong TJ, Jeong MH. 1466Prognosis of biodegradable polymer drug-eluting stents versus second-generation durable polymer drug-eluting stents in acute myocardial infarction patients following percutaneous coronary intervention. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1466] [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
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Park I, Choi JH, Kim EK, Kim SM, Yang JH, Song YB, Hahn JY, Choi SH, Gwon HC, Lee SH, Choi YH, Oh JK. P1790Non-invasive identification of coronary collateral vessels by coronary computed tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1790] [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: 11/12/2022] Open
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Tang Z, Blatnik M, Broussard LJ, Choi JH, Clayton SM, Cude-Woods C, Currie S, Fellers DE, Fries EM, Geltenbort P, Gonzalez F, Hickerson KP, Ito TM, Liu CY, MacDonald SWT, Makela M, Morris CL, O'Shaughnessy CM, Pattie RW, Plaster B, Salvat DJ, Saunders A, Wang Z, Young AR, Zeck BA. Search for the Neutron Decay n→X+γ, Where X is a Dark Matter Particle. PHYSICAL REVIEW LETTERS 2018; 121:022505. [PMID: 30085691 DOI: 10.1103/physrevlett.121.022505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 05/01/2018] [Indexed: 06/08/2023]
Abstract
Fornal and Grinstein recently proposed that the discrepancy between two different methods of neutron lifetime measurements, the beam and bottle methods, can be explained by a previously unobserved dark matter decay mode, n→X+γ. We perform a search for this decay mode over the allowed range of energies of the monoenergetic γ ray for X to be dark matter. A Compton-suppressed high-purity germanium detector is used to identify γ rays from neutron decay in a nickel-phosphorous-coated stainless-steel bottle. A combination of Monte Carlo and radioactive source calibrations is used to determine the absolute efficiency for detecting γ rays arising from the dark matter decay mode. We exclude the possibility of a sufficiently strong branch to explain the lifetime discrepancy with 97% confidence.
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Park MH, Jung IK, Min WK, Choi JH, Kim GM, Jin HK, Bae JS. Neuropeptide Y improves cisplatin-induced bone marrow dysfunction without blocking chemotherapeutic efficacy in a cancer mouse model. BMB Rep 2018; 50:417-422. [PMID: 28712386 PMCID: PMC5595171 DOI: 10.5483/bmbrep.2017.50.8.099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 11/25/2022] Open
Abstract
Cisplatin is the most effective and widely used chemo-therapeutic agent for many types of cancer. Unfortunately, its clinical use is limited by its adverse effects, notably bone marrow suppression leading to abnormal hematopoiesis. We previously revealed that neuropeptide Y (NPY) is responsible for the maintenance of hematopoietic stem cell (HSC) function by protecting the sympathetic nervous system (SNS) fibers survival from chemotherapy-induced bone marrow impairment. Here, we show the NPY-mediated protective effect against bone marrow dysfunction due to cisplatin in an ovarian cancer mouse model. During chemotherapy, NPY mitigates reduction in HSC abundance and destruction of SNS fibers in the bone marrow without blocking the anticancer efficacy of cisplatin, and it results in the restoration of blood cells and amelioration of sensory neuropathy. Therefore, these results suggest that NPY can be used as a potentially effective agent to improve bone marrow dysfunction during cisplatin-based cancer therapy.
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Kang J, Lee SH, Son JH, Lee JW, Choi YH, Choi JH, Paik WH, Ryu JK, Kim YT. Body mass index and weight change during initial period of chemotherapy affect survival outcome in advanced biliary tract cancer patients. PLoS One 2018; 13:e0195118. [PMID: 29608578 PMCID: PMC5880377 DOI: 10.1371/journal.pone.0195118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 03/17/2018] [Indexed: 01/10/2023] Open
Abstract
Background The impact of obesity on survival is known to vary in different cancers. Advanced biliary tract cancer was rarely analyzed about the relationship between obesity and prognosis. We performed this study to evaluate the BMI and body weight change as prognostic factors for advanced biliary tract cancer patients with palliative chemotherapy. Methods Between January 2005 and December 2016, two hundred and seventy-six patients who underwent chemotherapy for biliary tract cancer were retrospectively analyzed. The relationship between BMI (kg/m2) and clinical outcomes including overall and progression-free survival was assessed. Additionally the relationship between change in body composition and overall survival was evaluated. Results Median overall survival was 9.7 months for underweight patients, 10.1 months for normal patients, 15.8 months for overweight group, 13.1 months for obese patients, respectively. (p = 0.047) Univariate analysis showed that BMI, stage III, age less than 64 year-old, gallbladder cancer, operation, radiotherapy and ECOG performance were significantly associated with better survival. Compared with normal patients, overweight patients (BMI 23–24.9kg/m2) had a reduced risk of mortality in multivariate analysis (HR 0.632; 95% CI 0.436–0.918, p = 0.016). In the additional analysis for the effect of changes in body weight and BMI to the overall survival, decrease in body weight and BMI (HR 1.410, 95% CI 1.168–1.986, p = 0.046) was associated with a shorter in overall survival. Conclusion Overweight status and the maintenance of body weight during the initial period of chemotherapy are important and independent predictors of better overall survival in advanced biliary tract cancer patients.
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Choi JH, Park I, Lee JM, Kim HY. TCTAP A-079 Non-invasive Coronary Physiologic Study Based on Computational Analysis of Intracoronary Transluminal Attenuation Gradient. J Am Coll Cardiol 2018. [DOI: 10.1016/j.jacc.2018.03.143] [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: 10/17/2022]
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96
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Kim J, Lee JM, Choi KH, Rhee TM, Hwang D, Park J, Park TK, Yang JH, Song YB, Choi JH, Hahn JY, Choi SH, Gwon HC. TCTAP A-098 Differential Clinical Outcomes Between Angiographic Complete Versus Incomplete Coronary Revascularization, According to the Presence of Chronic Kidney Disease in the Drug-eluting Stent Era. J Am Coll Cardiol 2018. [DOI: 10.1016/j.jacc.2018.03.173] [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: 10/17/2022]
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97
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Choi YH, Jang DK, Lee SH, Jang S, Choi JH, Kang J, Paik WH, Lee JK, Ryu JK, Kim YT. Utility of serum phosphate as a marker for predicting the severity of post-endoscopic retrograde cholangiopancreatography pancreatitis. United European Gastroenterol J 2018; 6:895-901. [PMID: 30023067 DOI: 10.1177/2050640618764168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/12/2018] [Indexed: 01/03/2023] Open
Abstract
Background To date, no reliable marker for predicting the severity of post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis exists. A previous animal study reported a correlation between serum phosphate level and the severity of acute pancreatitis. Objective The purpose of this study was to evaluate the feasibility of serum phosphate as a marker for predicting the severity of post-ERCP pancreatitis in humans. Methods A cohort of patients that were diagnosed with post-ERCP pancreatitis between January 2005 and December 2016 was queried. In addition to serum phosphate levels measured between 12 and 24 hours after ERCP, several candidates deemed suitable for accurately predicting the severity of post-ERCP pancreatitis were also explored. Results A total of 191 patients with severe (n = 42, 22.0%) and mild-to-moderate (n = 149, 78.0%) post-ERCP pancreatitis were included. Several factors for predicting severe post-ERCP pancreatitis were identified in the multivariate analysis: malignancy as the primary indication for ERCP (odds ratio (OR) 2.65, P = 0.038), systemic inflammatory response syndrome (OR 4.49, P = 0.016) and serum phosphate level (OR 1.97, P = 0.040). In the receiver operating characteristic analysis, the area under the curve of serum phosphate level for severe post-ERCP pancreatitis was 0.65 (95% confidence interval, 0.56-0.75). The optimal cut-off value of serum phosphate level for prediction of severe post-ERCP pancreatitis was 3.35 mg/dL (sensitivity, 0.62; specificity, 0.73). Conclusions Serum phosphate level after ERCP can be used as a reliable prognostic marker in predicting the severity of post-ERCP pancreatitis. Future prospective studies would be the cogent next step in validating its value.
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Kang J, Ryu JK, Son JH, Lee JW, Choi JH, Lee SH, Kim YT. Association between pathologic grade and multiphase computed tomography enhancement in pancreatic neuroendocrine neoplasm. J Gastroenterol Hepatol 2018; 33:1677-1682. [PMID: 29514405 DOI: 10.1111/jgh.14139] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 02/06/2018] [Accepted: 03/01/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIM Pancreatic neuroendocrine neoplasms (PanNENs) are rare diseases but gradually increasing in prevalence with different prognosis. Multiphase contrast-enhanced computed tomography (CT) is known as widely used imaging modality for the diagnosis of pancreatic tumors. We aimed to investigate whether CT enhancement pattern is associated with the pathologic tumor grade and can predict that of PanNEN. METHODS Ninety PanNEN patients who underwent multiphase enhanced CT before pathologic diagnosis were retrospectively reviewed. CT enhancement values at each phase were measured, and its relation with pathologic grade was assessed. RESULTS Ninety PanNENs included 62 G1 (68.9%), 21 G2 (23.3%), and 7 G3 (7.8%). The enhancement values of the early arterial phase were significantly different among three groups (G1 119.4 HU, G2 94.7 HU, and G3 64.8 HU; G1 vs G2, P = 0.043; G1 vs G3, P = 0.001; and G2 vs G3, P = 0.027). In the late arterial phase, there was a difference between grade 1/2 and 3 but no significant difference between grade 1 and grade 2 (G1 164.3 HU, G2 142.9 HU, and G3 94.1 HU; G1 vs G2, P = 0.804; G1 vs G3, P = 0.016; and G2 vs G3, P = 0.022). The enhancement value of the portal phase did not differ significantly among the three groups. Diagnostic ability of the early arterial enhancement value for the differentiation of the G1 (cutoff 109.5 HU, sensitivity 73.3%, and specificity 62.5%) was comparable with that of the tumor size (cutoff 20.5 mm, sensitivity 68.9%, and specificity 66.7%). CONCLUSIONS Computed tomography enhancement value at early arterial phase and its changing pattern can be a useful predictor for the differentiation of pathologic grade of PanNENs.
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Choi JH, Lee SH, Choi YH, Kang J, Paik WH, Ahn DW, Ryu JK, Kim YT. Clinical outcomes of endoscopic ultrasound-guided ethanol ablation for pancreatic cystic lesions compared with the natural course: a propensity score matching analysis. Therap Adv Gastroenterol 2018; 11:1756284818759929. [PMID: 29535793 PMCID: PMC5844525 DOI: 10.1177/1756284818759929] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Endoscopic ultrasound-guided ethanol ablation (EUS-EA) is a recently introduced treatment for pancreatic cystic lesions (PCLs). However, clinical benefits such as survival gain and maintenance of quality of life (QOL) have not been fully established. The aim of this study was to evaluate the clinical benefits of EUS-EA compared with the natural course (NC) of PCLs. METHODS This retrospective comparative study of patients with PCLs investigated an EUS-EA group (n = 118) and an NC group (n = 428). Propensity score matching (PSM) analysis was applied to minimize the effects of selection bias. The overall survival as the primary outcome and the surgical resection rate and complete remission (CR) rate as the secondary outcomes were evaluated. RESULTS Between 84 matched pairs of both groups, there were no significant differences in the baseline clinical characteristics and the mean follow-up duration (78.88 ± 38.86, 75.90 ± 57.46 months, p = 0.694). Overall survival did not differ significantly (194.12 ± 5.60, 247.54 ± 12.70 months, p = 0.235). The surgical resection rate (4.8% versus 26.2%, p < 0.001) was significantly lower in the EUS-EA group. CR was observed only in the EUS-EA group and the CR rate was 32.1%. CONCLUSIONS EUS-EA for PCLs with low risk of malignancy might not be able to obtain a survival benefit, but showed maintenance of QOL by avoidance of unnecessary surgery, and a certain level of CR when compared to the NC. EUS-EA could be considered a useful treatment option for these, but careful application is needed because of the limited effects in some types of PCLs.
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Lee JE, Cha YK, Kim JS, Choi JH. Birt-Hogg-Dubé syndrome: characteristic CT findings differentiating it from other diffuse cystic lung diseases. Diagn Interv Radiol 2018; 23:354-359. [PMID: 28830849 DOI: 10.5152/dir.2017.16606] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Birt-Hogg-Dubé (BHD) syndrome is an uncommon, autosomal dominant, multiorgan systemic disorder manifesting as cutaneous fibrofolliculomas, lung cysts with or without spontaneous pneumothorax, and renal tumors. Spontaneous pneumothorax and lung cysts on chest computed tomography (CT) should lead to the inclusion of BHD syndrome in the differential diagnosis, because these findings may develop earlier than other clinical manifestations. Here, we review and describe the characteristic findings of BHD syndrome. The number, shape, size, and distribution of the lung cysts can help to differentiate BHD syndrome from other diffuse cystic lung diseases. Knowledge of the chest CT findings of BHD syndrome may lead to a correct diagnosis and the initiation of an appropriate work-up in order to prevent pneumothorax and for the early detection of renal tumors.
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