1
|
Saygin D, DiRenzo D, Raaphorst J, de Groot I, Bingham CO, Lundberg IE, Regardt M, Sarver C, de Visser M, Maxwell LJ, Beaton D, Kim JY, Needham M, Alexanderson H, Christopher-Stine L, Mecoli CA, Park JK. Responsiveness and meaningful thresholds of PROMIS pain interference, fatigue, and physical function forms in adults with idiopathic inflammatory myopathies: Report from the OMERACT Myositis Working Group. Semin Arthritis Rheum 2024; 64:152339. [PMID: 38141522 DOI: 10.1016/j.semarthrit.2023.152339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 11/18/2023] [Accepted: 11/28/2023] [Indexed: 12/25/2023]
Abstract
BACKGROUND A series of qualitative studies conducted by the OMERACT Myositis Working Group identified pain interference, fatigue, and physical function as highly important life impact domains for adults with idiopathic inflammatory myositis (IIM). In this study, our goal was to assess the responsiveness and minimal important difference of PROMIS pain interference (6a), fatigue (7a), and physical function (8b). METHODS Adults with IIM from USA, Netherlands, Korea, Sweden, and Australia with two "clinical" visits were enrolled in this prospective study. Anchor questions on a Likert scale were collected at baseline, and manual muscle testing (MMT), physician and patient reported global disease activity, and PROMIS instruments were collected at both visits. Responsiveness was assessed with i) ANOVA, ii) paired t-test, effect size and standardized response mean, and iii) Pearson correlation. Minimal important difference (MID), minimal important change (MIC) and minimal detectable change (MDC) values were calculated. RESULTS 114 patients with IIM (median age 60, 60 % female) completed both visits. Changes in PROMIS instruments were significantly different among anchor categories. Patients who reported improvement had a significant improvement in their PROMIS scores with at least medium effect size, while patients who reported worsening and stability did not show a significant change with weak effect size. PROMIS instruments had weak to moderate correlations with MMT, patient and physician global disease activity. MID was approximately 2-3 points for Pain Interference and 3-4 points for Fatigue and Physical Function forms based on the method used. MIC was approximately 4-5 for improvement of all the instruments, while MDC was 1.7-2 points for Pain Interference and Physical Function and 3.2-3.9 for Fatigue. CONCLUSION This study provides evidence towards the responsiveness of the PROMIS instruments in a large international prospective cohort of adults with IIM supporting their use as PROMs in adult myositis.
Collapse
Affiliation(s)
- D Saygin
- Division of Rheumatology, Department of Medicine, University of Pittsburgh, Pittsburgh, USA
| | - D DiRenzo
- Division of Rheumatology, Department of Medicine, University of Pennsylvania, Philadelphia, USA
| | - J Raaphorst
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | | | - C O Bingham
- Division of Rheumatology, Department of Medicine, Johns Hopkins University, Baltimore, USA
| | - I E Lundberg
- Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet, Karolinska University, Stockholm, Sweden
| | - M Regardt
- Department of Neurobiology, Care Sciences and Society, Division of Occupational Therapy, Karolinska Institutet and Medical Unit Occupational Therapy and Physical Therapy, Karolinska University Hospital, Stockholm, Sweden
| | | | - M de Visser
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - L J Maxwell
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - D Beaton
- Institute for Work & Health and Institute for Health Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - J Y Kim
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Korea
| | - M Needham
- Department of Neurology, Fiona Stanley Hospital, IIID Murdoch University and University of Notre Dame, Perth, Australia
| | - H Alexanderson
- Medical Unit Occupational Therapy and Physical Therapy, Karolinska University Hospital and Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - L Christopher-Stine
- Division of Rheumatology, Department of Medicine, Johns Hopkins University, Baltimore, USA
| | - C A Mecoli
- Division of Rheumatology, Department of Medicine, Johns Hopkins University, Baltimore, USA
| | - J K Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Hospital and College of Medicine, Seoul, Korea.
| |
Collapse
|
2
|
Lee S, Kim C, Kim H, Ahn SG, Cho S, Park JK, Moon JY, Won H, Suh Y, Cho JR, Cho YH, Oh SJ, Lee BK, Kime JS. Perioperative risk and benefit of antiplatelet therapy in patients undergoing non-cardiac surgery within 1 year after percutaneous coronary intervention with second-generation drug-eluting stents. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Antiplatelet therapy (APT) in patients undergoing non-cardiac surgery (NCS) after percutaneous coronary intervention (PCI) is still on debate due to its opposite effects which are to prevent from cardiovascular events and to cause bleeding. There is no apparent consensus on how to determine perioperative APT strategy within 1 year after PCI. Therefore, we investigated the risk and benefit of APT in NCS within 1 year after PCI.
Methods
Patients undergoing NCS after PCI with second-generation drug-eluting stents are retrospectively included from multicenter cohort of 8 medical centers in Korea. Perioperative clinical event within 30 days after NCS was recorded. Net adverse clinical event (NACE) including all cause death, major adverse cardiac event (MACE, a composite of cardiac death, myocardial infarction, and stent thrombosis) and major bleeding were evaluated. To overcome bias, propensity score covariate adjustment was performed using logistic regression analysis to generate propensity scores for patients of both APT strategies.
Results
Total 1130 patients (median age 69 years, female 30.5%) undergoing NCS within 1 year after PCI were eligible in the cohort. Study population included 55.1% patients suffered from ACS and 22.5% underwent complex PCI. NCS included 45.8% intermediate-to-high risk surgery and 10.7% urgent or emergent surgery. APT was continued during NCS in 62.7% of the patients. More patients continued DAPT (48% vs. 32%, p<0.001) among the patients who underwent NCS within 6 months after PCI than those who underwent NCS after 6 months. There were 49 NACE (4.3%), 16 MACE (1.4%) and 23 major bleeding events (2.0%), respectively. Continuing APT was associated with a lower risk of NACE (Adjusted hazard ratio [HR], 0.49; 95% confidence interval [CI], 0.27–0.89; p=0.020)) and MACE (Adjusted HR, 0.35; 95 CI, 0.12–0.96; p=0.042). Subgroup analysis showed a tendency that continuing APT might be favorable than discontinuing APT in terms of MACE in patients who were diagnosed with ACS, underwent complex PCI, or underwent NCS within 6 months after PCI.
Conclusions
About two thirds of the patients were continuing APT during NCS. Our findings may support a careful consideration of APT continuation for some of the patients who are undergoing NCS within 1 year after PCI.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- S Lee
- Yonsei University, Division of Cardiology , Seoul , Korea (Republic of)
| | - C Kim
- Ewha Womans University Seoul Hospital, Department of Cardiology , Seoul , Korea (Republic of)
| | - H Kim
- NHIS Ilsan Hospital, Division of Cardiology , Goyang , Korea (Republic of)
| | - S G Ahn
- Wonju Severance Christian Hospital, Division of Cardiology , Wonju , Korea (Republic of)
| | - S Cho
- Dankook University, Division of Cardiovascular Medicine , Cheonan-si , Korea (Republic of)
| | - J K Park
- NHIS Ilsan Hospital, Division of Cardiology , Goyang , Korea (Republic of)
| | - J Y Moon
- Cha Bundang Medical Center, Department of Cardiology , Seongnam , Korea (Republic of)
| | - H Won
- Chung-Ang University Hospital, Cardiovascular & Arrhythmia Center , Seoul , Korea (Republic of)
| | - Y Suh
- Myongji Hospital, Department of Cardiology , Goyang , Korea (Republic of)
| | - J R Cho
- Kangnam Sacred Heart Hospital, Division of Cardiology , Seoul , Korea (Republic of)
| | - Y H Cho
- Myongji Hospital, Department of Cardiology , Goyang , Korea (Republic of)
| | - S J Oh
- NHIS Ilsan Hospital, Division of Cardiology , Goyang , Korea (Republic of)
| | - B K Lee
- Gangnam Severance Hospital, Division of Cardiology , Seoul , Korea (Republic of)
| | - J S Kime
- Yonsei University, Division of Cardiology , Seoul , Korea (Republic of)
| |
Collapse
|
3
|
Park H, Yu HT, Kim TH, Park J, Park JK, Kang KW, Shim J, Kim JB, Choi EK, Park HW, Lee YS, Joung B. Oral anticoagulation therapy in atrial fibrillation patients with advanced chronic kidney disease: CODE-AF Registry. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background and objectives
Advanced chronic kidney disease (CKD), including end-stage renal disease (ESRD) on dialysis, increases thromboembolic risk among patients with atrial fibrillation (AF). This study examined the comparative safety and efficacy of direct-acting oral anticoagulant (DOAC) compared to warfarin or no OAC among AF patients with advanced CKD or ESRD on dialysis.
Methods
Using data from the COmparison study of Drugs for symptom control and complication prEvention of AF (CODE-AF) registry, 260 non-valvular AF patients with advanced CKD (defined as estimated glomerular filtration rate [eGFR] <3 0ml/min per 1.73 m2) or ESRD on dialysis were enrolled from June 2016 to July 2020. The study population was categorized into DOAC, warfarin, and no OAC group, and differences in major or clinically relevant non-major (CRNM) bleeding, stroke/systemic embolism (SE), myocardial infarction/critical limb ischemia (CLI), and death were assessed.
Results
During a median 24 months of follow-up, major or CRNM bleeding risk was significantly reduced in the DOAC group compared to the warfarin group (hazard ratio [HR] 0.21, 95% confidence interval [CI] 0.05 to 0.95, p=0.042). In addition, the risk of composite adverse clinical outcome (major or CRNM bleeding, stroke/SE, myocardial infarction/CLI, and death) was significantly reduced in the DOAC group compared to the no OAC group (HR 0.32, 95% CI 0.11 to 0.96, p=0.043).
Conclusion
Among AF patients with advanced CKD or ESRD on dialysis, DOAC was associated with a lower risk of major or CRNM bleeding compared to warfarin and a lower risk of composite adverse clinical outcome compared to no OAC.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Korean Healthcare Technology R&D project funded by the Ministry of Health & Welfare (HI15C1200, HC19C0130)
Collapse
Affiliation(s)
- H Park
- Yonsei University College of Medicine , Seoul , Korea (Republic of)
| | - H T Yu
- Yonsei University College of Medicine , Seoul , Korea (Republic of)
| | - T H Kim
- Yonsei University College of Medicine , Seoul , Korea (Republic of)
| | - J Park
- Ewha Womans University School of Medicine , Seoul , Korea (Republic of)
| | - J K Park
- Hanyang university medical center , Seoul , Korea (Republic of)
| | - K W Kang
- Eulji University College of Medicine , Seoul , Korea (Republic of)
| | - J Shim
- Korea University Anam Hospital , Seoul , Korea (Republic of)
| | - J B Kim
- Kyunghee University , Seoul , Korea (Republic of)
| | - E K Choi
- Seoul National University Hospital , Seoul , Korea (Republic of)
| | - H W Park
- Chonnam National University School of Medicine , Gwangju , Korea (Republic of)
| | - Y S Lee
- Daegu Catholic University Medical Center , Daegu , Korea (Republic of)
| | - B Joung
- Yonsei University College of Medicine , Seoul , Korea (Republic of)
| |
Collapse
|
4
|
Park H, Yu HT, Kim TH, Park J, Park JK, Kang KW, Shim J, Kim JB, Kim J, Choi EK, Park HW, Lee YS, Joung B. Resting heart rate and cardiovascular outcomes in patients with atrial fibrillation: CODE-AF registry. Europace 2022. [DOI: 10.1093/europace/euac053.182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
The prognostic significance of resting heart rate and its therapeutic target in atrial fibrillation (AF) is uncertain.
Purpose
The aim of this study was to investigate the relationships between resting heart rate and cardiovascular outcomes in patients with AF.
Methods
A total of 8,886 patients with AF was included from the COmparison study of Drugs for symptom control and complication prEvention of AF (CODE-AF) registry. Patients were categorized according to baseline heart rate, and cardiovascular outcomes were accessed during a median follow-up of 30 months. The primary outcome was a composite of cardiovascular death, hospitalization due to heart failure, and myocardial infarction/critical limb ischemia.
Results
Compared to heart rate ≥100 beats per minute (bpm), heart rate 80-99 bpm was associated with the lowest risk of primary outcome (adjusted hazard ratio [HR] 0.56, 95% confidence interval [CI] 0.40-0.79, p=0.001). In subgroup of patients with heart failure with preserved ejection fraction (HFpEF), heart rate between 80-99 bpm was associated with reduced risk of primary outcome compared to heart rate ≥100 bpm (HR 0.40, 95% CI 0.16-0.98, p=0.045). However, in patients with heart failure with reduced ejection fraction (HFrEF), there was no association between resting heart rate and cardiovascular outcomes (P for interaction 0.001).
Conclusion
Resting heart rate was associated with cardiovascular outcomes in patients with AF, and those with a resting heart rate between 80-99 bpm had the lowest risk of adverse events. The impact of resting heart rate on adverse events persisted in patients with concomitant HFpEF but was not apparent in those with concomitant HFrEF.
Collapse
Affiliation(s)
- H Park
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - HT Yu
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - TH Kim
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J Park
- Ewha Womans University School of Medicine, Seoul, Korea (Republic of)
| | - JK Park
- Hanyang University Seoul Hospital, Seoul, Korea (Republic of)
| | - KW Kang
- Eulji University College of Medicine, Seoul, Korea (Republic of)
| | - J Shim
- Korea University Medical Center, Seoul, Korea (Republic of)
| | - JB Kim
- Kyung Hee University Hospital, Seoul, Korea (Republic of)
| | - J Kim
- University of Ulsan College of Medicine, Seoul, Korea (Republic of)
| | - EK Choi
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - HW Park
- Chonnam National University School of Medicine, Gwangju, Korea (Republic of)
| | - YS Lee
- Daegu Catholic University Medical Center, Daegu, Korea (Republic of)
| | - B Joung
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| |
Collapse
|
5
|
Lee DS, Ki MJ, Lee HJ, Park JK, Hong SY, Kim BW, Heo JH, Im SH. Fully Scalable and Stable CsPbI 2Br Solar Cells Realized by an All-Spray-Coating Process. ACS Appl Mater Interfaces 2022; 14:7926-7935. [PMID: 35041387 DOI: 10.1021/acsami.1c21644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Spray-coating is a scalable and time-efficient technique for the development of large-area metal halide perovskite (MHP) solar cells. However, a bottleneck still exists toward the development of fully scalable n-i-p-type MHP solar cells particularly on spray-coating the hole transporting layer (HTL). Here, we present a reliable strategy of spray-coating the HTL by using MoO2 nanoparticles with small amounts of poly(triarylamine) (PTAA) binders to ensure uniform coverage and efficient charge extraction. By spray-coating all layers except the Au electrode, we achieve high and scalable efficiencies of 14.26 and 13.88% for CsPbI2Br unit cells (0.12 cm2) and submodules (25 cm2), respectively. We then extend toward an all-spray-coating process by spray-coating carbon black as the top counter electrode, resulting in a submodule efficiency of 10.08%. Finally, we also demonstrate good long-term stability of the submodules under damp heat conditions (85 °C/85% relative humidity) over 1000 h.
Collapse
Affiliation(s)
- David Sunghwan Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Min Jeong Ki
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Hyong Joon Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Seok Yeong Hong
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Bong Woo Kim
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jin Hyuck Heo
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| |
Collapse
|
6
|
Lee Y, Shin J, Park JK, Shin JH, Kim HJ, Park HC, Heo R. Associations between changing patterns of ST-T waves morphologies in rest electrocardiography and cardiovascular risk in an asymptomatic low risk population: a report from Ansan-Ansung cohort study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
While clinical significance of ST-T wave abnormalities (STA) in rest electrocardiography (ECG) on long-term cardiovascular outcomes has been on debate, few studies have been reported on the association between the changes in ST-T waves in rest ECG and cardiovascular outcomes in low risk populations. We investigate the changing patterns of STA in rest ECG and the predictive value of the changes in ST-T wave in rest ECG for cardiovascular events in an asymptomatic general population.
Methods
A longitudinal community-based cohort study was conducted for 12 years. Koreans aged 40–69 years were followed biennially through scheduled revisit for comprehensive assessments. Among 10,030 participants, 6,648 participants who did not have any cardiovascular diseases, angina-related symptoms or pathologic Q waves in rest ECG at baseline were included for analysis. Changes in STAs were defined using the changes between ECG at baseline and that at the first revisit. A major adverse cardiovascular events was defined as a composite of cardiac death, myocardial infarction, clinical diagnosis of coronary artery disease and stroke.
Results
Among 5,924 participants without STA at baseline, only 187 participants (3.2%) developed new STA. Among 724 patients (10.9%) with STA at baseline, 274 patients (37.8%) persistently showed STA at the first revisit. MACEs occurred more frequently in the participants persistently with STA and those with newly-developed STA than in the participants persistently without STA (Figure 1). Multivariate Cox-proportional hazard models showed that a higher risk of MACE was only associated with the persisted STA (HR 1.69; 95% CI 1.10–2.63). In participants with baseline STA, persisted T-wave flattening was associated with a higher risk of MACE, whereas T-wave inversion, either persisted or fluctuated was not associated with a higher risk of MACE, compared with persistent absence of STA (Figure 2). In the participants without baseline STAs, multivariate Cox-proportional hazard model showed that newly-developed T-wave flattening (HR 1.85; 95% CI 0.20–2.84), not T-wave inversion (HR 1.50; 95% CI 0.85–2.65) was associated with a higher risk of MACE. Survival receiver operating curve analysis showed that the changes in STAs had a C-index of 0.538 (95% CI 0.511–0.558), a sensitivity of 13.0% and a specificity of 92.5% and add only a small value to the predictive power of 10-year atherosclerotic cardiovascular diseases risk estimator (C-index without STA changes 0.708 [0.681–0.736] vs. C-index with STA changes 0.721 [0.694–0.748]).
Conclusions
STAs uncommonly developed while frequently disappeared spontaneously in the asymptomatic general population. Persisted STA and newly developed STA in rest ECG were predictive of future cardiovascular events in the asymptomatic general population. However, the changes in STAs did not significantly improve the predictive value of the conventional risk estimator, when added.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Research Foundation of Korea Figure 1Figure 2
Collapse
Affiliation(s)
- Y Lee
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H J Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| |
Collapse
|
7
|
Lee Y, Shin J, Shin JH, Kim HJ, Ryu MH, Park HC, Lim HY, Park JK, Heo R, Kim WH. Simulation and validation for count-based binary decision of target blood pressure achievement in home blood pressure monitoring data analysis for clinical practice. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Home blood pressure monitoring (HBPM) is a useful tool to identify hypertension and to decide whether a patient's blood pressure (BP) is controlled. The use of automatized oscillometric BP measurement devices has become increasingly popular with help of information technology and internet of things to the devices. However, applying HBPM to daily clinical practices is still challenging, because most patients with hypertension are in age groups not familiar to digital devices and internet and high BP criteria using average home BP values are often useless in outpatient clinics without easily accessible average BP calculation tools. Therefore, we developed a simple and straightforward method to interpret HBPM through counts of BP ≥135/85 mmHg.
Methods
We simulated 400 cases of HBPM using a random number generator function in statistical software. The simulated average home systolic BP (SBP) and its standard deviation (SD) were 125±15 mmHg and 12±5 mmHg and the number of HBP readings was 24 times. The simulated diastolic BP (DBP) was randomly selected to 50–75% of the SBP. The validation of the binary interpretation method was conducted using actual HBPM data from 386 subjects in a rural area of South Korea. Receiver operating characteristics curve analysis was conducted, and linear regression and logarithmic models were fitted between the numbers of home BP ≥135/85 mmHg and mean BP. Hypertension was defined with average home BP ≥135/85 mmHg.
Results
In the simulated cohort, hypertension was presented in 197 cases (49.3%). The C-index of the numbers of BP readings ≥135/85 mmHg was 0.994 (95% confidence interval [CI] 0.990–0.998), and ≥12 of 24 BP readings ≥135/85 mmHg showed a sensitivity of 95.4%, a specificity of 95.1% and an accuracy of 95.3% for the diagnosis of hypertension. In validation cohort, the numbers of home BP measurements varied from 8 to 81 times. The validation cohort similarly showed that the C-index of the ratio between the number of high BP readings (≥135/85 mmHg) to the number of BP measurements (R-NHBP/NBP) was 0.985 (95% CI, 0.976–0.994) and the best accuracy was shown at R-NHBP/NBP of ≥0.45. R-NHBP/NBP of ≥0.5 showed a sensitivity of 0.957, a specificity of 0.907 and an accuracy of 0.927. The accuracy of the R-NHBP/NBP of ≥0.5 decreased as SD and the range of SBP increased, whereas it did not change with the number of measurements (Figure 1). R-NHBP/NBP <0.2 predicted normotension and R-NHBP/NBP >0.8 predicted hypertension in 95% confidence. Mean widths of the 95 prediction intervals for the average SBP and DBP were 18.2 mmHg and 12.6 mmHg, respectively (Figure 2).
Conclusion
Counting the number of BP ≥135/85 mmHg can provide accurate assessments for the BP levels. R-NHBP/NBP of ≥0.5 is a simple and accurate marker of high BP in HBPM, and R-NHBP/NBP could be a useful tool to assess BP levels in patients practicing HBPM.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
Collapse
Affiliation(s)
- Y Lee
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H J Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - M H Ryu
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H Y Lim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - W H Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| |
Collapse
|
8
|
Heo JH, Park JK, Yang YM, Lee DS, Im SH. Self-powered flexible all-perovskite X-ray detectors with high sensitivity and fast response. iScience 2021; 24:102927. [PMID: 34430816 PMCID: PMC8365385 DOI: 10.1016/j.isci.2021.102927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/05/2021] [Accepted: 07/27/2021] [Indexed: 12/24/2022] Open
Abstract
Perovskite materials have demonstrated superior performance in many aspects of optoelectronic applications including X-ray scintillation, photovoltaic, photodetection, and so on. In this work, we demonstrate a self-powered flexible all-perovskite X-ray detector with high sensitivity and fast response, which can be realized by integrating CsPbBr3 perovskite nanocrystals (PNCs) as the X-ray scintillator with a CH3NH3PbI3 perovskite photodetector. The PNCs scintillator exhibits ultra-fast light decay of 2.81 ns, while the perovskite photodetector gives a fast response time of ∼0.3 μs and high-specific detectivity of ∼2.4×1012 Jones. The synergistic effect of these two components ultimately leads to a self-powered flexible all-perovskite X-ray detector that delivers high sensitivity of 600-1,270 μC/mGyaircm3 under X-ray irradiation and fast radiation-to-current response time.
Collapse
Affiliation(s)
- Jin Hyuck Heo
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Yang Michael Yang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, Zhejiang, China
| | - David Sunghwan Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| |
Collapse
|
9
|
Lee DS, Heo JH, Park JK, Kim BW, Lee HJ, Song YM, Im SH. Enhanced Weak-Light Detection of Perovskite Photodetectors through Perovskite/Hole-Transport Material Interface Treatment. ACS Appl Mater Interfaces 2021; 13:16775-16783. [PMID: 33787223 DOI: 10.1021/acsami.1c03610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Enhancement in weak-light detection and other photodetection properties was observed for organic-inorganic halide perovskite photodetectors as a result of benzylammonium iodide (BzAI) treatment at the methylammonium lead triiodide (MAPbI3) and hole-transport layer (HTL) interface. After treatment, growth of the two-dimensional Ruddlesden-Popper perovskite phase was observed at the MAPbI3 surface, which shifted the overall surface work function upwards and thus effectively facilitated charge transfer across the MAPbI3/HTL interface. As a result, the fully fabricated device with 10 mg/mL (BzAI/isopropanol) treatment exhibited shorter rise time (trise) and decay time (tdecay) of 53 and 38 μs, respectively, compared to trise and tdecay of 214 and 120 μs, respectively, for the pristine MAPbI3 sample. In addition, the BzAI-treated device exhibited larger linearity compared to the pristine MAPbI3 sample, demonstrating a high and stable specific detectivity of 1.49 × 1013 to 2.14 × 1013 Jones under incident light intensity of 10-3 to 100 mW/cm2, respectively.
Collapse
Affiliation(s)
- David Sunghwan Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Jin Hyuck Heo
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Bong Woo Kim
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Hyong Joon Lee
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Yun Mi Song
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea
| |
Collapse
|
10
|
Park JK, Heo JH, Kim BW, Im SH. Synthesis of post-processable metal halide perovskite nanocrystals via modified ligand-assisted re-precipitation method and their applications to self-powered panchromatic photodetectors. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
11
|
Han HJ, Park JH, Park JK, Kristanto I, Park BJ, Kwak SK, Im SH. Uniform Ag Nanocubes Prepared by AgCl Particle-Mediated Heterogeneous Nucleation and Disassembly and Their Mechanism Study by DFT Calculation. Small 2020; 16:e2002132. [PMID: 32406203 DOI: 10.1002/smll.202002132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
|
12
|
Heo JH, Kim DH, Park JK, Choi YK, Lee DS, Im SH. Thermally Stable Inorganic CsPbI 2Br Mesoscopic Metal Halide Perovskite Solar Submodules. ACS Appl Mater Interfaces 2019; 11:43066-43074. [PMID: 31657896 DOI: 10.1021/acsami.9b12179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Highly efficient and thermally stable inorganic CsPbI2Br mesoscopic metal halide perovskite (MHP) solar cells with a poly-3-hexylthiophene (P3HT) hole transporting layer (HTL) are demonstrated by spin-washing of the P3HT HTL since the light harvesting efficiency is improved by minimizing the coabsorption of light by P3HT, and the open-circuit voltage is enhanced because of the increased valence band maximum position of the spin-washed P3HT HTL. The spin-washed CsPbI2Br MHP solar cell exhibited 1.24 V open-circuit voltage (Voc), 14.20 mA/cm2 short-circuit current density (Jsc), 81.52% fill factor (FF), and 14.35% power conversion efficiency (PCE). The unencapsulated spin-washed CsPbI2Br MHP solar cell went through 7.56% degradation after a 1000 h thermal stability test under 100 °C/25% relative humidity (RH) and simultaneous 1 sun light soaking conditions. In addition, the unencapsulated spin-washed CsPbI2Br MHP solar submodule with 25 cm2 of masked active area showed a 98% geometrical FF, 115.09 mA short-circuit current, 3.54 V Voc, 71.09% FF, and 11.58% PCE while exhibiting 8.80% of degradation during a thermal stability test at 100 °C/25% RH and 1 sun light soaking for 1000 h.
Collapse
Affiliation(s)
- Jin Hyuck Heo
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Do Hun Kim
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Yong Kyu Choi
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - David S Lee
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 136-713 , Republic of Korea
| |
Collapse
|
13
|
Han HJ, Park JH, Park JK, Kristanto I, Park BJ, Kwak SK, Im SH. Uniform Ag Nanocubes Prepared by AgCl Particle-Mediated Heterogeneous Nucleation and Disassembly and Their Mechanism Study by DFT Calculation. Small 2019; 15:e1904031. [PMID: 31496116 DOI: 10.1002/smll.201904031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Uniform Ag nanocubes are reproducibly synthesized by a AgCl particle-mediated heterogeneous nucleation and disassembly process in polyol chemistry. By introducing N,N-dimethylformamide (DMF) in a conventional polyol method with HCl etchant, Ag nanocrystals (NCs) begin to be nucleated on the surface of AgCl-precipitated particles due to the promoted reduction reaction by DMF. The nucleated Ag NCs on the AgCl particles are grown to Ag nanocubes in shape by consuming Ag sources from the AgCl mother particles. Eventually the grown Ag nanocubes are disassembled from the mother AgCl particles because the AgCl particles are fully digested by the growing Ag nanocubes. Density functional theory calculation confirms that the Ag atoms can be favorably deposited on the (100) facet of AgCl particles and the Ag nuclei on the AgCl particles tend to reveal (100) facet.
Collapse
Affiliation(s)
- Hye Ji Han
- Department of Chemical Engineering, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
| | - Ju Hyun Park
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Imanuel Kristanto
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Bum Jun Park
- Department of Chemical Engineering, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
| | - Sang Kyu Kwak
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| |
Collapse
|
14
|
Lee Y, Park HC, Shin JH, Lim YH, Park JK, Shin J, Kim KS, Kim BK. P5298Influence of the changes in body fat on all-cause and cardiovascular mortality in a general population: a report from Ansan-Ansung cohort in the Korean genome environment study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Paradoxical beneficial effects of obesity on all-cause and cardiovascular mortality have been reported in multiple cohort studies based on patients with cardiovascular disease as well as general populations. However, the association between the presence of obesity at baseline and the better survival rates could not be directly interpreted into the beneficial effect of gain in obesity or fatness on the mortality, which makes it difficult to provide any recommendation for the management of obesity. Therefore, we investigated the influence of the changes in body fat on all-cause and cardiovascular mortality in a general population.
Methods
A population-based cohort study has been conducted for 12 years (from 2001 to 2012). A total of 5,259 subjects in whom body compositions using a bio-impedance method were measured at least 2 times during the observational period were included. The causes of death was identified from the nation-wide database in KOSTAT. I20-I82 and R99 in the International Classification of Disease-10 codes were defined as a cardiovascular death. The subjects were evenly divided into 3 groups by the percentages of the changes in body fat (Δ%BF; decreased [Δ%BF <0.0%] vs. increased [Δ%BF 0.0–13.7%] vs. highly increased [Δ%BF ≥13.7%]). Inverse probability of treatment weighting was applied to balance the covariate differences among the groups.
Results
The age was 51.2±8.5 years and 51.6% was male. Median observation duration was 163 (the interquartile range: 157–168) months. The all-cause death and cardiovascular death occurred most frequently in the decreased Δ%BF group and least frequent in the highly increased Δ%BF group in both unweighted and weighted cohort. Multivariate Cox proportional hazard models showed that the risk of all-cause death was lower in the increased and highly increased Δ%BF groups (hazard ratio [HR] 0.61 [0.47–0.80] and 0.24 [0.17–0.34], respectively) and the risk of cardiovascular death was lower in the highly increased Δ%BF group (HR 0.20 [0.08–0.48]), compared to those in the decreased Δ%BF group after adjustment for all covariates including physical activities and the changes in muscle mass. The risk of all-cause death and cardiovascular death linearly decreased with increasing Δ%BF (HR 0.72 [0.67–0.77] and 0.70 [0.60–0.82], respectively).
Conclusion
The increase in body fat is associated with a lower risk of all-cause death and cardiovascular death in a middle-age general population, independently with physical activities and the changes in muscle mass.
Collapse
Affiliation(s)
- Y Lee
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - H C Park
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - J H Shin
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - Y H Lim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - K S Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - B K Kim
- Sung Ae Hospital, Department of Cardiology, Seoul, Korea (Republic of)
| |
Collapse
|
15
|
Abstract
Abstract
Purpose
Patients with diabetes mellitus have an elevated risk of atrial fibrillation (AF). However, whether insulin resistance may elevate risk of AF incidence in non-diabetic is inconsistent. The aim of our study was to verify the association between insulin resistance and incidence of AF in non-diabetics.
Methods
We evaluated population-based cohorts embedded in the Korean Genome Epidemiology Study. Insulin resistance was expressed as Homeostasis Model Assessment for Insulin resistance (HOMA-IR). Baseline data including HOMA-IR and electrocardiography (ECG) were obtained at 2001. Subsequent biennial ECG was performed for identification of AF until 2016.
Results
Among the 8220 participants (46.8% male; median age 49 years), 25 participants had AF (0.3%) at baseline and 101 participants developed AF (1.2%) during follow up of 12 years. In multivariate Cox regression analysis, high HOMA-IR (≥1.4) was significantly associated with incident AF compared with low HOMA-IR (<1.40) (adjusted hazard ratio [HR] 1.9, 95% confidence interval [CI] 1.3–3.0). In subgroup analysis, these association was consistent regardless of obesity (BMI<25; adjust HR 1.8, 95% CI 1.1–3.0, BMI≥25; adjust HR 2.3, 95% CI 1.3–4.0)
Subgroup analysis
Conclusion
Based on prospective cohort study, insulin resistance (HOMA-IR) was associated with AF independently of obesity in non-diabetics.
Collapse
Affiliation(s)
- J K Park
- Hanyang University, Seoul, Korea (Republic of)
| | - J H Park
- Hanyang University, Seoul, Korea (Republic of)
| | - Y G Lee
- Hanyang University Kuri Hospital, Cardiology, Guri, Korea (Republic of)
| | - J H Shin
- Hanyang University Kuri Hospital, Cardiology, Guri, Korea (Republic of)
| | - Y H Lim
- Hanyang University, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Seoul, Korea (Republic of)
| |
Collapse
|
16
|
Heo JH, Shin DH, Park JK, Kim DH, Lee SJ, Im SH. High-Performance Next-Generation Perovskite Nanocrystal Scintillator for Nondestructive X-Ray Imaging. Adv Mater 2018; 30:e1801743. [PMID: 30141200 DOI: 10.1002/adma.201801743] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 05/28/2018] [Indexed: 05/12/2023]
Abstract
Readily commercializable and cost-effective next-generation CsPbBr3 perovskite nanocrystals (PNCs) based X-ray detectors are demonstrated. The PNCs-based X-ray detector exhibits higher spatial resolution (9.8 lp mm-1 at modulation transfer function (MTF) = 0.2 and 12.5-8.9 lp mm-1 for a linear line chart), faster response time (≈200 ns), and comparable stability (>40 Gyair s-1 of X-ray exposure) compared with the commercialized terbium-doped gadolinium oxysulfide (GOS)-based detectors (spatial resolution = 6.2 lp mm-1 at MTF = 0.2 and 6.3 lp mm-1 for a linear line chart, response time = ≈1200 ns) because the PNCs-based scintillator has ≈5.6-fold faster average photoluminescence lifetime and stronger emission than the GOS-based one.
Collapse
Affiliation(s)
- Jin Hyuck Heo
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| | - Dong Hee Shin
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| | - Jin Kyoung Park
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| | - Do Hun Kim
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| | - Sang Jin Lee
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| | - Sang Hyuk Im
- Department of Chemical and Biological engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 17104, Republic of Korea
| |
Collapse
|
17
|
Cho MS, Kim J, Park JK, Kim TH, Lee JM, Park JB, Park HW, Kang KW, Shim JM, Uhm JS, Kim JB, Kim CS, Lee YS, Choi EK, Joung BY. P5796Prevalence and correlates of left atrial enlargement based on left atrial volume index in korean patients with non-valvular atrial fibrillation: data from comparison study of drugs for symptom control. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M S Cho
- Asan Medical Center, Heart Institute, Seoul, Korea Republic of
| | - J Kim
- Asan Medical Center, Heart Institute, Seoul, Korea Republic of
| | - J K Park
- Hanyang University, Seoul, Korea Republic of
| | - T H Kim
- Yonsei University, Seoul, Korea Republic of
| | - J M Lee
- Kyunghee University, Seoul, Korea Republic of
| | - J B Park
- Ewha University, Seoul, Korea Republic of
| | - H W Park
- Chonnam National University Hospital, Gwangju, Korea Republic of
| | - K W Kang
- Eulji University Hospital, Daejeon, Korea Republic of
| | - J M Shim
- Korea University, Seoul, Korea Republic of
| | - J S Uhm
- Yonsei University, Seoul, Korea Republic of
| | - J B Kim
- Kyunghee University, Seoul, Korea Republic of
| | - C S Kim
- Yonsei University, Seoul, Korea Republic of
| | - Y S Lee
- Catholic University of Daegu, Daegu, Korea Republic of
| | - E K Choi
- Seoul National University, Seoul, Korea Republic of
| | - B Y Joung
- Yonsei University, Seoul, Korea Republic of
| |
Collapse
|
18
|
Park JK, Choi YW, Kim BS, Chang KS, Lee YG, Shin JH, Lim YH, Park HC, Shin J. P1880Independent effect of physical activity and resting heart rate on incidence of atrial fibrillation in general population. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J K Park
- Hanyang University, Seoul, Korea Republic of
| | - Y W Choi
- Hanyang University, Seoul, Korea Republic of
| | - B S Kim
- Hanyang University, Seoul, Korea Republic of
| | - K S Chang
- Hanyang University, Seoul, Korea Republic of
| | - Y G Lee
- Hanyang University Kuri Hospital, Cardiology, Guri, Korea Republic of
| | - J H Shin
- Hanyang University Kuri Hospital, Cardiology, Guri, Korea Republic of
| | - Y H Lim
- Hanyang University, Seoul, Korea Republic of
| | - H C Park
- Hanyang University Kuri Hospital, Cardiology, Guri, Korea Republic of
| | - J Shin
- Hanyang University, Seoul, Korea Republic of
| |
Collapse
|
19
|
Lee Y, Park JK, Lim YH, Shin JH, Park HC, Shin J, Kim KS. 5047C-reactive protein and the risk of atrial fibrillation: KOGES 12 years' follow-up study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y Lee
- Hanyang University, Seoul, Korea Republic of
| | - J K Park
- Hanyang University, Seoul, Korea Republic of
| | - Y H Lim
- Hanyang University, Seoul, Korea Republic of
| | - J H Shin
- Hanyang University, Seoul, Korea Republic of
| | - H C Park
- Hanyang University, Seoul, Korea Republic of
| | - J Shin
- Hanyang University, Seoul, Korea Republic of
| | - K S Kim
- Hanyang University, Seoul, Korea Republic of
| |
Collapse
|
20
|
Park JK. [Experience of Frailty in Korean Elderly: A Phenomenological Study Utilizing the Colaizzi Method]. J Korean Acad Nurs 2017; 47:562-574. [PMID: 28894077 DOI: 10.4040/jkan.2017.47.4.562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/18/2017] [Accepted: 08/20/2017] [Indexed: 11/09/2022]
Abstract
PURPOSE This study attempts to explore the subjective experience of frailty among elderly individuals in Korea. METHODS From June to August in 2014, 11 elderly persons who had experienced frailty in a community were interviewed. For data analysis, the method suggested by Colaizzi was applied as a phenomenological method. RESULTS According to the analysis, the study participants' frailty process was structured in seven categories: (a) 'natural phenomenon with ageing,' (b) 'life force comes to an end,' (c) 'the light in my heart turns off,' (d) 'unavoidable situation,' (e) 'continuous and connected vicious cycle,' (f) 'the limit of recovery energy already passes,' and (g) 'life is supported by someones help.' CONCLUSION The frailty experience in the participants is a natural process of aging, which cause vicious cycle acting with each other among physical, psychological, and social health. It is said that the cycle of frailty was started from weight loss and insufficient sleep, and boostered by pain. The participants from repetition of the vicious cycle become exhausted and pass the threshold of their recovery energy at some points. If they meet with sudden accidents such as falling, traffic accident and so on, they become to live a dependent life supported by someone's help in a moment. To prevent frailty and worsening conditions in Korean elderly individuals, it is recommended to provide a interventional programs using this study's results.
Collapse
Affiliation(s)
- Jin Kyoung Park
- College of Nursing, Incheon Catholic University, Incheon, Korea.
| |
Collapse
|
21
|
Chae MR, Kang SJ, Lee KP, Choi BR, Kim HK, Park JK, Kim CY, Lee SW. Onion (Allium cepa L.) peel extract (OPE) regulates human sperm motility via protein kinase C-mediated activation of the human voltage-gated proton channel. Andrology 2017; 5:979-989. [PMID: 28805023 DOI: 10.1111/andr.12406] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 06/13/2017] [Accepted: 06/27/2017] [Indexed: 01/14/2023]
Abstract
Onion (Allium cepa L.) and quercetin protect against oxidative damage and have positive effects on multiple functional parameters of spermatozoa, including viability and motility. However, the associated underlying mechanisms of action have not yet been identified. The aim of this study was to investigate the effect of onion peel extract (OPE) on voltage-gated proton (Hv1) channels, which play a critical role in rapid proton extrusion. This process underlies a wide range of physiological processes, particularly male fertility. The whole-cell patch-clamp technique was used to record the changes in Hv1 currents in HEK293 cells transiently transfected with human Hv1 (HVCN1). The effects of OPE on human sperm motility were also analyzed. OPE significantly activated the outward-rectifying proton currents in a concentration-dependent manner, with an EC50 value of 30 μg/mL. This effect was largely reversible upon washout. Moreover, OPE induced an increase in the proton current amplitude and decreased the time constant of activation at 0 mV from 4.9 ± 1.7 to 0.6 ± 0.1 sec (n = 6). In the presence of OPE, the half-activation voltage (V1/2 ) shifted in the negative direction, from 20.1 ± 5.8 to 5.2 ± 8.7 mV (n = 6), but the slope was not significantly altered. The OPE-induced current was profoundly inhibited by 10 μm Zn2+ , the most potent Hv1 channel inhibitor, and was also inhibited by treatment with GF109203X, a specific protein kinase C (PKC) inhibitor. Furthermore, sperm motility was significantly increased in the OPE-treated groups. OPE exhibits protective effects on sperm motility, at least partially via regulation of the proton channel. Moreover, similar effects were exerted by quercetin, the major flavonoid in OPE. These results suggest OPE, which is rich in the potent Hv1 channel activator quercetin, as a possible new candidate treatment for human infertility.
Collapse
Affiliation(s)
- M R Chae
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kang
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K P Lee
- Laboratory of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - B R Choi
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - H K Kim
- College of Pharmacy, Kyungsung University, Busan, Korea
| | - J K Park
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - C Y Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Korea
| | - S W Lee
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
22
|
Ahn HJ, Lee SJ, Park JK, Jun BG, Seo HI, Han KH, Kim YD, Jeong WJ, Cheon GJ. Catheter probe endoscopic ultrasonography by using cold lubricating jelly-filled method for esophageal subepithelial tumors. Dis Esophagus 2017; 30:1-6. [PMID: 28575248 DOI: 10.1093/dote/dox035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 03/29/2017] [Indexed: 12/11/2022]
Abstract
Catheter probe endoscopic ultrasonography (C-EUS) by ultrasonographic jelly-filled method has been used to evaluate esophageal subepithelial tumors (SETs). Ultrasonographic jelly is safe on the skin, but its internal safety has not been demonstrated. The jelly stored at room temperature is easily injected into the esophagus through the instrument channel of the endoscope. However, using jelly stored at room temperature remains problematic because the jelly is drained rapidly. We used cold lubricating jelly and an intravenous extension tube to resolve these problems. In this study, we evaluated the safety and efficacy of cold lubricating jelly-filled method. The medical records of patients who underwent C-EUS by using water or cold lubricating jelly-filled method for esophageal SETs from March 2013 to September 2016 in Gangneung Asan hospital were reviewed. Clinical characteristics and EUS findings were evaluated retrospectively. Image quality and procedure time between water and cold lubricating jelly-filled method were compared retrospectively. This study included 138 patients (74 males, 64 females) with esophageal SET with a mean age of 57.1 ± 11.1 years. Thirty-four patients had lesions in the upper esophagus, 58 patients had lesions in the middle esophagus, and 46 patients had lesions in the lower esophagus. The EUS diagnoses were leiomyoma (82.6%), hemangioma (4.3%), extrinsic compressive lesion (3.6%), granulosa cell tumor (2.9%), ectopic calcification (1.4%), cyst (1.4%), lipoma (0.7%), varix (0.7%), and inconclusive lesion (2.2%). The mean image score in the cold lubricating jelly filled-method group was higher than that in the water-filled method group (3.2 ± 0.7 vs. 2.8 ± 0.7, P = 0.002). The procedure time in the cold lubricating jelly filled-method group was shorter than that in the water-filled method group (10 minutes 27 seconds ± 4 minutes 22 seconds versus 13 minutes 20 seconds ± 6 minutes 20 seconds, P = 0.045). No procedure-related complication was observed. C-EUS using the cold lubricating jelly-filled method seems to provide better image quality and shorter procedure time compared with C-EUS using the water-filled method.
Collapse
Affiliation(s)
- H J Ahn
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - S J Lee
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - J K Park
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - B G Jun
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - H I Seo
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - K H Han
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - Y D Kim
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - W J Jeong
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| | - G J Cheon
- Department of Internal Medicine, Gangneung Asan Hospital, Ulsan University College of Medicine, Gangneung, Korea
| |
Collapse
|
23
|
Choo SH, Lee SW, Chae MR, Kang SJ, Sung HH, Han DH, Chun JN, Park JK, Kim CY, Kim HK, So I. Effects of eupatilin on the contractility of corpus cavernosal smooth muscle through nitric oxide-independent pathways. Andrology 2017; 5:1016-1022. [PMID: 28719725 DOI: 10.1111/andr.12397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/26/2017] [Accepted: 06/09/2017] [Indexed: 12/19/2022]
Abstract
Eupatilin (5,7-dihydroxy-3,4,6-trimethoxyflavone) is one of the main compounds present in Artemisia species. Eupatilin has both antioxidative and anti-inflammatory properties and a relaxation effect on vascular contraction regardless of endothelial function. We evaluated the relaxant effects of eupatilin on the corpus cavernosum (CC) of rabbits and the underlying mechanisms of its activity in human corpus cavernosum smooth muscle (CCSM) cells. Isolated rabbit CC strips were mounted in an organ bath system. A conventional whole-cell patch clamp technique was used to measure activation of calcium-sensitive K+ -channel currents in human CCSM cells. The relaxation effect of eupatilin was evaluated by cumulative addition (10-5 m ~ 3 × 10-4 m) to CC strips precontracted with 10-5 m phenylephrine. Western blotting analysis was performed to measure myosin phosphatase targeting subunit 1 (MYPT1) and protein kinase C-potentiated inhibitory protein for heterotrimeric myosin light chain phosphatase of 17-kDa (CPI-17) expression and to evaluate the effect of eupatilin on the RhoA/Rho-kinase pathway. Eupatilin effectively relaxed the phenylephrine-induced tone in the rabbit CC strips in a concentration-dependent manner with an estimated EC50 value of 1.2 ± 1.6 × 10-4 m (n = 8, p < 0.05). Iberiotoxin and tetraethylammonium significantly reduced the relaxation effect (n = 8, p < 0.001 and p = 0.003, respectively). Removal of the endothelium or the presence of L-NAME or indomethacin did not affect the relaxation effect of eupatilin. In CCSM cells, the extracellular application of eupatilin 10-4 m significantly increased the outward currents, and the eupatilin-stimulated currents were significantly attenuated by treatment with 10-7 m iberiotoxin (n = 13, p < 0.05). Eupatilin reduced the phosphorylation level of MYPT1 at Thr853 of MLCP and CPI-17 at Thr38. Eupatilin-induced relaxation of the CCSM cells via NO-independent pathways. The relaxation effects of eupatilin on CCSM cells were partially due to activation of BKCa channels and inhibition of RhoA/Rho-kinase.
Collapse
Affiliation(s)
- S H Choo
- Department of Urology, Ajou University School of Medicine, Suwon, Korea
| | - S W Lee
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - M R Chae
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kang
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H H Sung
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D H Han
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - J N Chun
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - J K Park
- Department of Urology, Institute for Medical Sciences, Medical School, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - C Y Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Korea
| | - H K Kim
- College of Pharmacy, Kyungsung University, Busan, Korea
| | - I So
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
| |
Collapse
|
24
|
Lee WY, Park MH, Kim KW, Song H, Kim KB, Lee CS, Kim NK, Park JK, Yang BC, Oh KB, Im GS, Chung HJ. Identification of lactoferrin and glutamate receptor-interacting protein 1 in bovine cervical mucus: A putative marker for oestrous detection. Reprod Domest Anim 2016; 52:16-23. [DOI: 10.1111/rda.12744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 07/01/2016] [Indexed: 11/28/2022]
Affiliation(s)
- WY Lee
- Department of Food Bioscience; College of Biomedical & Health Science; Konkuk University; Chung-ju Korea
| | - MH Park
- Department of Biomedical Chemistry; College of Biomedical & Health Science; Konkuk University; Chung-ju Korea
- Doosan Venture Digm 924; Dongan-gu Anyang Korea
| | - KW Kim
- Animal Biotechnology Division; National Institute of Animal Science; Wanju-gun Korea
| | - H Song
- Department of Animal Biotechnology; Konkuk University; Gwangjin-gu Seoul Korea
| | - KB Kim
- Korea Institute for Animal Products Quality Evaluation; Gunpo Korea
| | - CS Lee
- Department of Biomedical Chemistry; College of Biomedical & Health Science; Konkuk University; Chung-ju Korea
| | - NK Kim
- Experiment Research Institute; National Agricultural Products Quality Management Service (NAQS); Gimcheon Gyeongbuk Korea
| | - JK Park
- Department of Swine & Poultry Science; Korea National College of Agriculture and Fisheries; Jeonju Korea
| | - BC Yang
- Institute of Hanwoo; National institute of animal Science; Pyeongchang Korea
| | - KB Oh
- Animal Biotechnology Division; National Institute of Animal Science; Wanju-gun Korea
| | - GS Im
- Animal Biotechnology Division; National Institute of Animal Science; Wanju-gun Korea
| | - HJ Chung
- Animal Biotechnology Division; National Institute of Animal Science; Wanju-gun Korea
| |
Collapse
|
25
|
Kim HJ, Shin YS, Choi H, Kim MK, Jeong YB, Park JK. Undiagnosed nephrogenic diabetes insipidus as a cause of acute urinary retention in a young soldier. J ROY ARMY MED CORPS 2016. [DOI: 10.1136/jramc-2015-000471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
26
|
Liu W, Choi BR, Bak YO, Zhang LT, Zhou LX, Huang YR, Zhao C, Park JK. Cavernosum smooth muscle relaxation induced by Schisandrol A via the NO-cGMP signaling pathway. Cell Mol Biol (Noisy-le-grand) 2016; 62:115-119. [PMID: 27064883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Accepted: 03/28/2016] [Indexed: 06/05/2023]
Abstract
To evaluate the effect of Schisandrol A on rabbit corpus cavernosum smooth muscle and elucidate the potential mechanism. Penises were obtained from healthy male New Zealand White rabbits (2.5-3.0 kg). The pre-contracted penis with phenylephrine (Phe, 10 µM) was treated with accumulative concentrations of Schisandrol A (10-7, 10-6, 10-5 and 10-4 M). The change in intracavernosum pressure (ICP) and tension was recorded, cyclic nucleotides in the cavernosum tissue were measured by radioimmunoassay, mRNA level and expression of endothelial nitric oxide synthase (eNOS) and neuronal NOS (nNOS) were measured by real time PCR and western blot respectively. The corpus cavernosum smooth muscle relaxation induced by Schisandrol A was in a dose-dependent manner. Pre-treatment with NOS inhibitor (Nω nitro-L-arginine-methyl ester, L-NAME) or guanylyl cyclase inhibitor (1H-(1,2,4)oxadiazolo(4,3-a)quinoxalin-1-one, ODQ) significantly diminished the relaxation. The cyclic guanosine monophosphate (cGMP) level was significantly increased in the cavernosum tissue. Real time PCR and western blot showed the mRNA level and expression of eNOS and nNOS was also upregulated. Schisandrol A relaxes the cavernosum smooth muscle by activating NO-cGMP signaling pathway. It may be a new promising treatment for erectile dysfunction and cardiovascular disease.
Collapse
Affiliation(s)
- W Liu
- Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University and Shanghai Institute of Andrology Departments of Urology Shanghai China
| | - B R Choi
- Chonbuk National University Hospital Departments of Urology Jeonju South Korea
| | - Y O Bak
- Chonbuk National University Hospital Departments of Urology Jeonju South Korea
| | - L T Zhang
- Chonbuk National University Hospital Departments of Urology Jeonju South Korea
| | - L X Zhou
- Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University and Shanghai Institute of Andrology Departments of Urology Shanghai China
| | - Y R Huang
- Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University and Shanghai Institute of Andrology Departments of Urology Shanghai China
| | - C Zhao
- Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University and Shanghai Institute of Andrology Departments of Urology Shanghai China
| | - J K Park
- Chonbuk National University Hospital Departments of Urology Jeonju South Korea
| |
Collapse
|
27
|
Choi BR, Kumar SK, Zhao C, Zhang LT, Kim CY, Lee SW, Jeon JH, So I, Kim SH, Park NC, Kum HK, Park JK. Additive effects of Artemisia capillaris extract and scopoletin on the relaxation of penile corpus cavernosum smooth muscle. Int J Impot Res 2016; 28:80. [PMID: 26965159 DOI: 10.1038/ijir.2016.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
28
|
Park JK, Sugita S, Soma T, Yamashiro K, Hasegawa T. Malignant peripheral nerve sheath tumor coexisting with congenital melanocytic nevus in an elderly man. Pathol Int 2016; 66:309-10. [PMID: 26897251 DOI: 10.1111/pin.12392] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/22/2015] [Accepted: 01/18/2016] [Indexed: 11/30/2022]
Affiliation(s)
- J K Park
- Department of Surgical Pathology, Orthopaedic Surgery, Hokkaido Cancer Center, Sapporo, Japan
| | - S Sugita
- Department of Surgical Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan
| | - T Soma
- Department of Surgical Pathology, Orthopaedic Surgery, Hokkaido Cancer Center, Sapporo, Japan
| | - K Yamashiro
- Department of Surgical Pathology, Orthopaedic Surgery, Hokkaido Cancer Center, Sapporo, Japan
| | - T Hasegawa
- Department of Surgical Pathology, Sapporo Medical University, School of Medicine, Sapporo, Japan.
| |
Collapse
|
29
|
Park JK, Heo JH, Han HJ, Lee MH, Song DH, You MS, Sung SJ, Kim DH, Im SH. Efficient hysteresis-less bilayer type CH₃NH₃PbI₃ perovskite hybrid solar cells. Nanotechnology 2016; 27:024004. [PMID: 26618542 DOI: 10.1088/0957-4484/27/2/024004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bilayer type CH3NH3PbI3 (MAPbI3) perovskite hybrid solar cells were fabricated via a one-step spin-coating process by using solubility controlled MAPbI3 solutions of MAPbI3-DMSO (dimethyl sulfoxide) and MAPbI3-DMF (N, N-dimethylformamide)-HI. The best DMSO-bilayer device showed 1.07 ± 0.02 V V(oc) (open-circuit voltage), 20.2 ± 0.1 mA cm(-2) J(sc) (short-circuit current density), 68 ± 2% FF (fill factor), and 15.2 ± 0.3% η (overall power conversion efficiency) under the forward scan direction and 1.07 ± 0.02 V V(oc), 20.4 ± 0.1 mA cm(-2) J(sc), 70 ± 3% FF, and 15.9 ± 0.4% η under the reverse scan direction. The best HI-bilayer device had 1.08 ± 0.02 V V(oc), 20.6 ± 0.1 mA cm(-2) J(sc), 75 ± 1% FF, and 17.2 ± 0.2% η under the forward scan direction and 1.08 ± 0.02 V V(oc), 20.6 ± 0.1 mA cm(-2) J(sc), 76 ± 2% FF, and 17.4 ± 0.3% η under the reverse scan direction. The deviation of average device efficiency (η(avg)) of 20 DMSO samples and 20 HI samples was 14.2 ± 0.95% and 16.2 ± 0.85%, respectively. Therefore, the HI-bilayer devices exhibited better device efficiency and smaller J-V (current density-voltage) hysteresis with respect to the scan direction than the DMSO-bilayer devices due to the reduced recombination and traps by the formation of a purer and larger MAPbI3 perovskite crystalline film.
Collapse
Affiliation(s)
- Jin Kyoung Park
- Functional Crystallization Center (ERC), Department of Chemical Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Kim HJ, Park JK, Park SC, Kim YG, Choi H, Ko JI, Kim MK, Jeong YB, Shin YS. The prevalence of causative organisms of community-acquired urethritis in an age group at high risk for sexually transmitted infections in Korean Soldiers. J ROY ARMY MED CORPS 2015; 163:20-22. [PMID: 26607860 DOI: 10.1136/jramc-2015-000488] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 09/24/2015] [Indexed: 11/03/2022]
Abstract
OBJECTIVES This study was designed to evaluate the causative organisms in young male soldiers with clinical signs and symptoms after sexual contact that suggests a diagnosis of urethritis. METHODS Between June 2012 and January 2015, male patients with urethritis symptoms that had resulted from sexual contact within 3 months participated in this study. All patients were evaluated using urinalysis and were screened for Neisseria gonorrhoeae (NG), Chlamydia trachomatis (CT), Ureaplasma urealyticum (UU), Mycoplasma genitalium (MG), Mycoplasma hominis (MH), herpes simplex virus (HSV) type II and Trichomonas vaginalis (TV) using multiplex PCR (mPCR) assay in order to detect sexually transmitted infections (STI) or pathogens. RESULTS A total of 436 male patients aged 18-28 years were included in the study. The median age was 22.0 years. The prevalence of STI pathogens were as follows: NG in 19.0%, CT in 36.6%, UU in 24.0%, MG in 21.5%, MH in 6.1%, HSV type II in 1.6%, TV in 0.2% and indeterminate STI pathogens in 9.4%. Coinfection of NG with non-NG was detected in 5.7% of the participants, while the coinfection rates for STI pathogens were: with CT in 3.4%, with UU in 2.7%, with MG in 0.2% and with MH in 0.2%. CONCLUSIONS CT was the most prevalent STI pathogen and coinfections of NG with non-NG appeared less frequently. The young male soldiers with urethritis should be administered suitable antibiotics for STI pathogens that were found by mPCR results, rather than an experimental combination of antibiotics for coinfections.
Collapse
Affiliation(s)
- Hyung Jin Kim
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - J K Park
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - S C Park
- Department of Urology, Wonkwang University School of Medicine, Institute of Wonkwang Medical Science, Iksan, Korea
| | - Y G Kim
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - H Choi
- Department of Urology, Armed Forces Capital Hospital, Seongnam, Korea
| | - J I Ko
- Department of Urology, Armed Forces Capital Hospital, Seongnam, Korea
| | - M K Kim
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - Y B Jeong
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea
| | - Y S Shin
- Department of Urology, Chonbuk National University Medical School, Jeonju, Korea.,Department of Urology, Armed Forces Capital Hospital, Seongnam, Korea
| |
Collapse
|
31
|
Lee WH, Yoo JH, Yang JM, Park JK. Effect of the Film-Growth Defects on the Magnetic Microstructure of Epitaxial FePt Thin Film. J Nanosci Nanotechnol 2015; 15:8688-8692. [PMID: 26726576 DOI: 10.1166/jnn.2015.11498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Effect of the columnar grain boundaries on the perpendicular magnetic domain structure of epitaxial L10 FePt (001) thin film has been studied using electron holography. The analysis of stray fields shows that both the continuous and columnar epitaxial films of L10 FePt (001) consist of perpendicular magnetic domain walls. In the columnar epitaxial film, however, the perpendicular domain walls tend to be confined to columnar grain boundaries, because columnar boundaries act as pinning sites for the domain walls. The domain wall pinning by columnar grain boundaries leads to a significant hysteresis effect in the perpendicular magnetization of L10 FePt epitaxial films.
Collapse
|
32
|
Choi BR, Kumar SK, Zhao C, Zhang LT, Kim CY, Lee SW, Jeon JH, Soní KK, So I, Kim SH, Park NC, Kim HK, Park JK. Additive effects of Artemisia capillaris extract and scopoletin on the relaxation of penile corpus cavernosum smooth muscle. Int J Impot Res 2015; 27:225-32. [PMID: 26447600 DOI: 10.1038/ijir.2015.23] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 06/07/2015] [Accepted: 07/30/2015] [Indexed: 11/09/2022]
Abstract
The objective was to investigate the cellular effect and action mechanism of Artemisia capillaris extract (ACE) and its component, scopoletin, on penile corpus cavernosum smooth muscle (PCCSM). In vitro study with PCCSM, the precontracted PCCSM with phenylephrine was treated with ACE or scopoletin. Cyclic nucleotides in the perfusate were measured by radioimmunoassay and expression of protein and mRNA of endothelial nitric oxide synthase (eNOS) and neuronal nitric oxide synthase in the perfused PCCSM were measured by western blot and real-time PCR, respectively. The interaction of ACE or scopoletin with udenafil was also evaluated. ACE and scopoletin exerted a significant and concentration-dependent relaxation in PCCSM. The perfusion with ACE or scopoletin significantly increased cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) and the perfusion with ACE or scopoletin increased the expression of eNOS mRNA and protein. Furthermore, ACE or scopoletin enhanced udenafil-inducing relaxation in PCCSM. ACE and scopoletin relaxed the PCCSM mainly by activating nitric oxide-cGMP system and cAMP pathway and they may be additive therapeutic candidates for ED patients who do not completely respond to udenafil.
Collapse
Affiliation(s)
- B R Choi
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - S K Kumar
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - C Zhao
- Department of Urology, Renji Hospital, Jiao Tong University School of Medicine, and Shanghai Institute of Andrology, Shanghai, China
| | - L T Zhang
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - C Y Kim
- Department of Pharmacognosy, Hangyang University, Ansan, Republic of Korea
| | - S W Lee
- Department of Urology, Sungkyunkwan University Medical School, Seoul, Republic of Korea
| | - J-H Jeon
- Department of Physiology, Seoul National University Medical School, Seoul, Republic of Korea
| | | | - I So
- Department of Physiology, Seoul National University Medical School, Seoul, Republic of Korea
| | - S H Kim
- Department of Physiology, Diabetic Research Center, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - N C Park
- Department of Urology, Pusan National University Hospital, Busan, Republic of Korea
| | - H K Kim
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| | - J K Park
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University, Jeonju, Republic of Korea
| |
Collapse
|
33
|
Park JK, Lee J, Kim K, Jo YH, Lee JH, Kim J, Lee SM, Song IA. Association of C-Reactive Protein and Outcome in Patients With Community-Acquired Pneumonia. Intensive Care Med Exp 2015. [PMCID: PMC4797359 DOI: 10.1186/2197-425x-3-s1-a523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
34
|
Park JK, Campos CDM, Neužil P, Abelmann L, Guijt RM, Manz A. Direct coupling of a free-flow isotachophoresis (FFITP) device with electrospray ionization mass spectrometry (ESI-MS). Lab Chip 2015; 15:3495-3502. [PMID: 26183237 DOI: 10.1039/c5lc00523j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present the online coupling of a free-flow isotachophoresis (FFITP) device to an electrospray ionization mass spectrometer (ESI-MS) for continuous analysis without extensive sample preparation. Free-flow-electrophoresis techniques are used for continuous electrophoretic separations using an electric field applied perpendicular to the buffer and sample flow, with FFITP using a discontinuous electrolyte system to concurrently focus a target analyte and remove interferences. The online coupling of FFITP to ESI-MS decouples the separation and detection timeframe because the electrophoretic separation takes place perpendicular to the flow direction, which can be beneficial for monitoring (bio)chemical changes and/or extensive MS(n) studies. We demonstrated the coupling of FFITP with ESI-MS for simultaneous concentration of target analytes and sample clean-up. Furthermore, we show hydrodynamic control of the fluidic fraction injected into the MS, allowing for fluidically controlled scanning of the ITP window. Future applications of this approach are expected in monitoring biochemical changes and proteomics.
Collapse
Affiliation(s)
- J K Park
- Korea Institute of Science and Technology (KIST)-Europe, Campus e 7 1, 66123, Germany.
| | | | | | | | | | | |
Collapse
|
35
|
Park JK, Jeong YB, Han YM, Kim HJ. High-flow priapism caused by injury of the bilateral cavernosal artery after needle trauma in a patient with low-flow priapism. BJU Int 2015; 92 Suppl 3:e7-e8. [PMID: 19125464 DOI: 10.1111/j.1464-410x.2003.02945.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J K Park
- Department of Urology, Chonbuk National University and Research Institute of Clinical Medicine, Chonbuk National University Hospital, Chonju, Chonbuk, Korea.
| | | | | | | |
Collapse
|
36
|
Jeon HW, Choi MG, Lim CH, Park JK, Sung SW. Intraoperative esophagoscopy provides accuracy and safety in video-assisted thoracoscopic enucleation of benign esophageal submucosal tumors. Dis Esophagus 2015; 28:437-41. [PMID: 24712727 DOI: 10.1111/dote.12220] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Benign esophageal tumors are rare; complete surgical resection is essential for the management of the submucosal tumors. Larger, symptomatic, or non-diagnostic lesions should be resected for both diagnostic and therapeutic indications. Video-assisted thoracic surgery has become a popular treatment in the field of thoracic surgery; however, thoracoscopic esophageal surgery may lead to an increase in operative complications. The effect and safety of thoracoscopic surgery for esophageal submucosal lesions were evaluated. A retrospective study evaluated patients undergoing thoracoscopic treatment of benign submucosal tumors. Between March 2011 and December 2013, 17 patients underwent thoracoscopic resection of benign submucocal tumors. Intraoperative esophagoscopy was performed for tumor localization by transillumination and confirmation of mucosal integrity after enucleation in every patient. Median patient age was 47 years (range 30-65). The median surgery time was 170 minutes (range 80-429). The median tumor size was 3.8 cm (range 1.3-9). The median hospital stay was 4 days (range 2-12). There were 16 leiomyoma and 1 neurogenic tumor. There was one case of conversion to thoracotomy because of residual tumor after enucleation. Mucosal injuries occurred in three patients, two accidentally and one intentionally; each patient was treated with primary repair and confirmed integrity with flexible esophagoscopy at operating room. The small sized tumor with intraoperative esophagoscopy could be localized. Esophagoscopic assistance was necessary in eight patients to have better idea where to make myotomy. There were no major morbidities such as postoperative leakage or mortality. Esophageal submucosal tumors can be treated safely with thoracoscopic surgery. However, intraoperative esophagoscopy allows accurate tumor localization, direction of esophageal access incision, and decreases complications during VATS enucleation of esophageal submucosal tumors.
Collapse
Affiliation(s)
- H W Jeon
- Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - M-G Choi
- Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - C-H Lim
- Department of Thoracic and Cardiovascular Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - J K Park
- Department of Thoracic and Cardiovascular Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - S W Sung
- Department of Thoracic and Cardiovascular Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| |
Collapse
|
37
|
|
38
|
Park JK, Lee CH, Kim IH, Kim SM, Jang JW, Kim SH, Kim SW, Lee SO, Lee ST, Kim DG. Clinical characteristics and prognostic impact of bacterial infection in hospitalized patients with alcoholic liver disease. J Korean Med Sci 2015; 30:598-605. [PMID: 25931791 PMCID: PMC4414644 DOI: 10.3346/jkms.2015.30.5.598] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Accepted: 12/31/2014] [Indexed: 12/13/2022] Open
Abstract
Bacterial infection is an important cause of death in patients with liver cirrhosis. The aim of this study was to investigate the clinical characteristics and prognostic impact of bacterial infection in hospitalized patients with alcoholic liver disease (ALD). We retrospectively analyzed data from 409 patients consecutively admitted to a tertiary referral center with ALD diagnosis. Of a total of 544 admissions, 133 (24.4%) cases presented with bacterial infection, of which 116 were community-acquired whereas 17 were hospital-acquired. The common types of infection were pneumonia (38%), biliary tract infection (17%), soft tissue infection (12%), and spontaneous bacterial peritonitis (9%). Diabetes, serum Na <135 mM/L, albumin <2.5 g/dL, C-reactive protein ≥20 mg/L, systemic inflammatory response syndrome (SIRS) positivity were independently associated with bacterial infection in patients with ALD. Overall 30-day and 90-day mortalities in patients with bacterial infection were significantly (P < 0.001) higher than those without infection (22.3% vs. 5.1% and 32.3% vs. 8.2%, respectively). Furthermore, bacterial infection (HR, 2.2; 95% CI, 1.049-4.579, P = 0.037), SIRS positivity (HR, 2.5; 95% CI, 1.240-4.861, P = 0.010), Maddrey's discriminant function score ≥32 (HR, 2.3; 95% CI, 1.036-5.222, P = 0.041), and hemoglobin <12 g/dL (HR, 2.4; 95% CI, 1.081-5.450, P = 0.032) were independent predictors of short-term mortality. In conclusion, bacterial infection and SIRS positivity predicted short-term prognosis in hospitalized patients with ALD. A thorough evaluation at admission or on clinical deterioration is required to detect possible infection with prompt management.
Collapse
Affiliation(s)
- Jin Kyoung Park
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Chang Hun Lee
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - In Hee Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Seon Min Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Ji Won Jang
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Seong Hun Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Sang Wook Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Seung Ok Lee
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Soo Teik Lee
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| | - Dae-Ghon Kim
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Jeonju, Korea
| |
Collapse
|
39
|
Lee HN, Lee KS, Kim JC, Chung BH, Kim CS, Lee JG, Kim DK, Park CH, Park JK, Hong SJ. Rate and associated factors of solifenacin add-on after tamsulosin monotherapy in men with voiding and storage lower urinary tract symptoms. Int J Clin Pract 2015; 69:444-53. [PMID: 25363606 DOI: 10.1111/ijcp.12581] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/29/2014] [Indexed: 11/27/2022] Open
Abstract
AIM To explore the rate of add-on therapy with solifenacin in men with voiding and storage lower urinary tract symptoms (LUTS) after tamsulosin monotherapy and to explore predictive factors for starting solifenacin add-on therapy. METHODS Men aged ≥ 45 years with IPSS ≥ 12 and symptoms of OAB (OAB-V8 ≥ 8, micturition ≥ 8/24 h, urgency ≥ 2/24 h) were enrolled to receive tamsulosin 0.2 mg once daily. After 4 weeks, men with residual symptoms of OAB and reported 'dissatisfied' or 'a little satisfied' were received solifenacin 5 mg in combination with tamsulosin monotherapy. Subjects completed an IPSS, a Quality of life (QoL) index, OAB V8, and an International Consultation of Incontinence Questionnaire (ICIQ)-Male LUTS, and patient perception of bladder condition (PPBC) at baseline and week 4. RESULTS Of a total of 305 patients, 254 patients completed 4 weeks of tamsulosin treatment. For 176 patients, solifenacin was added (69.3%). Significant predictive factors of solifenacin add-on therapy included long LUTS duration, high IPSS, number of micturitions per 24 h, more urgency episodes, high urgency severity score in a voiding diary and high OAB V8 score. Based on multivariable analysis, potential predictive factors of solifenacin add-on therapy included long LUTS duration (OR = 1.008, 95% CI: 1.001-1.014), high serum PSA (OR = 1.543, 95% CI: 1.136-2.095) and small prostate size (OR = 0.970, 95% CI: 0.947-0.994) (p < 0.05). IPSS, daytime micturitions and urgency episodes, OAB V8 scores, ICIQ and PPBC were improved after tamsulosin monotherapy. CONCLUSIONS Two thirds of men with voiding and storage LUTS needed to add anticholinergics after 4 weeks of tamsulosin monotherapy. Patients with longer lasting symptoms and storage symptoms with small prostate volume may require the anticholinergic add-on.
Collapse
Affiliation(s)
- H N Lee
- Department of Urology, Seoul Seonam Hospital, Ewha Womans University, Seoul, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Shin YS, Lee SW, Park K, Chung WS, Kim SW, Hyun JS, Moon DG, Yang SK, Ryu JK, Yang DY, Moon KH, Min KS, Park JK. Effect of levitra on sustenance of erection (EROS): an open-label, prospective, multicenter, single-arm study to investigate erection duration measured by stopwatch with flexible dose vardenafil administered for 8 weeks in subjects with erectile dysfunction. Int J Impot Res 2014; 27:95-102. [PMID: 25471318 DOI: 10.1038/ijir.2014.39] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 10/18/2014] [Indexed: 11/09/2022]
Abstract
To investigate the change of erection duration measured by stopwatch with flexible dose vardenafil administered for 8 weeks in subjects with erectile dysfunction (ED). Effect of levitra on sustenance of erection was an open-label, prospective, multicenter and single-arm study designed to measure the duration of erection in men with ED receiving a flexible dose of vardenafil over an 8-week treatment period. Patients were instructed to take vardenafil 10 mg 60 min before attempting the intercourse. Vardenfil could be increased to 20 mg or decreased to 5 mg concerning patients' efficacy and safety. Following the initial screening, patients entered a 4-week treatment-free run-in phase and 8-week treatment period, during which they were instructed to attempt intercourse at least four times on four separate days. A total of 95 men were enrolled in 10 centers. After the 8 weeks treatment, the mean duration of erection leading to successful intercourse was statistically superior when patients were treated with vardenafil. After an 8-week treatment, the duration of erection leading to successful intercourse was 9.39 min. There were significant benefits with vardenafil in all domains of International Index of Erectile Function. Secondary efficacy end points included success rate of penetration, maintaining erection, ejaculation and satisfaction were superior when patients were treated with vardenafil. There was a significant correlation between duration of erection with other sexual factors. Also partner's sexual satisfaction was increased with vardenafil. Most adverse events were mild or moderate in severity. Vardenafil was safe and well tolerated. Vardenafil therapy provided a statistically superior duration of erection leading to successful intercourse in men with ED with female partner.
Collapse
Affiliation(s)
- Y S Shin
- Department of Urology, Chonbuk National University Medical School and Institute for Medical Sciences, Chonbuk National University and Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, South Korea
| | - S W Lee
- Department of Urology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K Park
- Department of Urology, Chonnam National University Medical School, Gwangju, Korea
| | - W S Chung
- Department of Urology, Ewha Womans University School of Medicine, Seoul, Korea
| | - S W Kim
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - J S Hyun
- Department of Urology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - D G Moon
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - S-K Yang
- Department of Urology, Konkuk University School of Medicine, Chungju, Korea
| | - J K Ryu
- Department of Urology, Inha University School of Medicine, Incheon, Korea
| | - D Y Yang
- Department of Urology, Hallym University College of Medicine, Chuncheon, Korea
| | - K H Moon
- Department of Urology, Yeungnam University College of Medicine, Daegu, Korea
| | - K S Min
- Department of Urology, Inje University Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - J K Park
- Department of Urology, Chonbuk National University Medical School and Institute for Medical Sciences, Chonbuk National University and Biomedical Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, South Korea
| |
Collapse
|
41
|
Lee YS, Lee KS, Kim JC, Hong S, Chung BH, Kim CS, Lee JG, Kim DK, Park CH, Park JK. Persistence with solifenacin add-on therapy in men with benign prostate obstruction and residual symptoms of overactive bladder after tamsulosin monotherapy. Int J Clin Pract 2014; 68:1496-502. [PMID: 25284747 DOI: 10.1111/ijcp.12483] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS In spite of the reported efficacy and safety of antimuscarinics in men with OAB (overactive bladder) and BPO (benign prostatic obstruction), many patients do not persist with the treatment. We aimed to evaluate persistence and the reasons for the discontinuation of solifenacin add-on therapy in men with residual symptoms of OAB after tamsulosin monotherapy for BPO in a real clinical environment. METHODS Men aged ≥ 45 years with IPSS ≥ 12 and symptoms of OAB (OAB-V8 ≥ 8, micturition ≥ 8/24 h, urgency ≥ 2/24 h) were prescribed tamsulosin 0.2 mg. After 4 weeks, men who had residual symptoms of OAB (OAB-V8 ≥ 8, micturition ≥ 8/24 h, urgency ≥ 1/24 h) and reported that they were 'dissatisfied' or 'a little satisfied' with the therapy were enrolled and prescribed solifenacin 5 mg in combination with tamsulosin. After 52 weeks, persistence and the reasons for the discontinuation of solifenacin were evaluated. Factors related to persistence were analysed. RESULTS Of the 305 men who had been treated with tamsulosin, 176 were prescribed solifenacin. After 52 weeks, 44 (25%) remained on solifenacin therapy. Of the 132 who discontinued solifenacin, 85 were evaluated on the reason for discontinuation. The three most common reasons for discontinuation were adverse events (AEs) (35%), lack of efficacy (33%), and improvement in symptoms (16%). The aggravation of voiding symptoms was the most common AE leading to discontinuation. Retention was observed in 11 men. None of the demographical or clinical characteristics were significantly related to persistence. CONCLUSIONS Only 25% men with OAB and BPO remained on antimuscarinic add-on therapy after 1 year, mostly because of AEs and lack of efficacy. Realistic data should be added to what is already known about antimuscarinic treatment in men by including patients who were excluded or who dropped out of well-designed clinical trials.
Collapse
Affiliation(s)
- Y-S Lee
- Department of Urology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Park JK, Park EA, Lee W, Kim YK, Lee EY, Song YW, Lee EB. Baseline MRA predicts the treatment response to vasodilator udenafil in patients with secondary Raynaud's phenomenon. Clin Exp Rheumatol 2014; 32:S-167-70. [PMID: 25189168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 05/26/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES High-resolution MR angiography (HR-MRA) demonstrates blood flow in the digital arteries, which correlates with the severity of Raynaud's phenomenon (RP). This study investigates whether baseline HR-MRA of the hand can predict the treatment response to udenafil, a new PDE5-inhibitor, in patients with secondary RP. METHODS Baseline MRA and Doppler ultrasound were obtained in 12 patients with secondary RP. The patients were treated with udenafil 100 mg/day for 4 weeks and changes in blood flow were measured. Blood flow on MRA was scored on a 4-point scale: 0, no visible flow; 1, visible flow to the proximal phalanx; 2, to the middle phalanx; and 3, to the distal phalanx. Peak systolic velocity (PSV) was measured to determine blood flow. Paired t-test and ANOVA were used to determine the treatment response of the different MRA scores. RESULTS On baseline MRA, 53.3% of digital arteries had an MRA score of 0, 25.8% MRA score of 1, 9.2% MRA score of 2, and 11.6% MRA score of 3. Overall, 4-week udenafil treatment improved digital flow (p<0.05) in all MRA scores. Digital arteries with MRA score 2 showed the best response with improvement in PSV by 14.5 mm/sec (p<0.01), whereas improvement in arteries of MRA scores 1 and 3 were not better than an MRA score of 0 (all, p>0.05). CONCLUSIONS Digital arteries with moderate blood flow observed on MRA respond best to treatment with udenalfil. Therefore, baseline MRA may help predict treatment response in patients with secondary RP.
Collapse
Affiliation(s)
- J K Park
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.
| | | | | | | | | | | | | |
Collapse
|
43
|
Affiliation(s)
- J J Kim
- Department of Thoracic and Cardiovascular Surgery, Uijeongbu St. Mary's Hospital , Seoul , Korea
| | | | | | | |
Collapse
|
44
|
Chung HJ, Kim KW, Han DW, Lee HC, Yang BC, Chung HK, Shim MR, Choi MS, Jo EB, Jo YM, Oh MY, Jo SJ, Hong SK, Park JK, Chang WK. Protein Profile in Corpus Luteum during Pregnancy in Korean Native Cows. Asian-Australas J Anim Sci 2014; 25:1540-5. [PMID: 25049514 PMCID: PMC4093032 DOI: 10.5713/ajas.2012.12294] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 08/28/2012] [Accepted: 08/12/2012] [Indexed: 01/17/2023]
Abstract
Steroidogenesis requires coordination of the anabolic and catabolic pathways of lipid metabolism, but the profile of proteins associated with progesterone synthesis in cyclic and pregnant corpus luteum (CL) is not well-known in cattle. In Experiment 1, plasma progesterone level was monitored in cyclic cows (n = 5) and pregnant cows (n = 6; until d-90). A significant decline in the plasma progesterone level occurred at d-19 of cyclic cows. Progesterone level in abbatoir-derived luteal tissues was also determined at d 1 to 5, 6 to 13 and 14 to 20 of cyclic cows, and d-60 and -90 of pregnant cows (n = 5 each). Progesterone level in d-60 CL was not different from those in d 6 to 13 CL and d-90 CL, although the difference between d 6 to 13 and d-90 was significant. In Experiment 2, protein expression pattern in CL at d-90 (n = 4) was compared with that in CL of cyclic cows at d 6 to 13 (n = 5). Significant changes in the level of protein expression were detected in 32 protein spots by two-dimensional polyacrylamide gel electrophoresis (2-DE), and 23 of them were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Six proteins were found only in pregnant CL, while the other 17 proteins were found only in cyclic CL. Among the above 6 proteins, vimentin which is involved in the regulation of post-implantation development was included. Thus, the protein expression pattern in CL was disorientated from cyclic luteal phase to mid pregnancy, and alterations in specific CL protein expression may contribute to the maintenance of pregnancy in Korean native cows.
Collapse
Affiliation(s)
- H J Chung
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - K W Kim
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - D W Han
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - H C Lee
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - B C Yang
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - H K Chung
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M R Shim
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M S Choi
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - E B Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - Y M Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - M Y Oh
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - S J Jo
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - S K Hong
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - J K Park
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| | - W K Chang
- National Institute of Animal Science, Rural Development Administration, Suwon, 441-706, Korea
| |
Collapse
|
45
|
Yoo SH, Kim IH, Jang JW, Choi CH, Moon JC, Park JK, Lee SY, Kim SH, Kim SW, Lee SO, Lee ST, Kim DG, Cho EY, Jung GM. Clinical features and risk factors for severe complications among patients with acute hepatitis A virus infection in the Jeonbuk Province of Korea. Korean J Gastroenterol 2014; 63:25-31. [PMID: 24463285 DOI: 10.4166/kjg.2014.63.1.25] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND/AIMS The frequency of symptomatic acute HAV infections in adulthood are increasing in Korea. This study analyzes the clinical severity in patients with acute HAV infection and investigates risk factors associated with three severe complications: prolonged cholestasis, acute kidney injury, and acute liver failure. METHODS We performed a retrospective analysis of 726 patients diagnosed from January 2006 to December 2010 at three tertiary hospitals in Jeonbuk Province, Republic of Korea with acute HAV infection. RESULTS In the group of 726 patients, the mean age was 30.3 years, 426 (58.6%) were male, and 34 (4.7%) were HBsAg positive. Severe complications from acute HAV infection occurred as follows: prolonged cholestasis in 33 (4.6%), acute kidney injury in 17 (2.3%), and acute liver failure in 16 (2.2%). Through multivariate analysis, age ≥40 years (OR 2.63, p=0.024) and peak PT (INR) ≥1.5 (OR 5.81, p=0.035) were found to be significant risk factors for prolonged cholestasis. Age ≥40 years (OR 5.24, p=0.002) and female gender (OR 3.11, p=0.036) were significant risk factors for acute kidney injury. Age ≥40 years (OR 6.91, p=0.002), HBsAg positivity (OR 5.02, p=0.049), and peak total bilirubin (OR 1.11, p=0.001) were significant risk factors for acute liver failure. CONCLUSIONS Age ≥40 years, female gender, HBsAg positivity, peak PT (INR) ≥1.5, and peak total bilirubin were significant risk factors for severe complications in acute HAV infections.
Collapse
Affiliation(s)
- Sun Ho Yoo
- Department of Internal Medicine, Research Institute of Clinical Medicine, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju 561-712, Korea
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Park JW, Moon SY, Lee JH, Park JK, Lee DS, Jung KC, Song YW, Lee EB. Bone marrow analysis of immune cells and apoptosis in patients with systemic lupus erythematosus. Lupus 2014; 23:975-85. [PMID: 24759630 DOI: 10.1177/0961203314531634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVES To examine the immune cell profile in the bone marrow of systemic lupus erythematosus (SLE) patients and to assess its clinical relevance. METHODS Sixteen bone marrow samples from 14 SLE patients were compared with seven healthy control samples. The numbers of immune cells and apoptotic cells in the bone marrow were examined by immunohistochemistry. The association between immune cell subsets and clinical features was investigated. RESULTS CD4+ T cells, macrophages and plasma cells were more common in the bone marrow of SLE patients than in healthy controls (p=0.001, p=0.004 and p<0.001, respectively). Greater numbers of CD4+ T cells and macrophages were associated with high-grade bone marrow damage. The percentage of apoptotic cells in bone marrow of SLE patients was significantly higher than that in controls (p<0.001) and was positively correlated with the number of plasmacytoid dendritic cells (p=0.013). Increased number of plasma cells along with high interleukin-6 expression was correlated with anti-double stranded DNA antibody levels and the SLE disease activity index (p=0.031 and 0.013, respectively). CONCLUSION Bone marrow from SLE patients showed a distinct immune cell profile and increased apoptosis. This, coupled with a correlation with disease activity, suggests that the bone marrow may play a critical role in the pathogenesis of SLE.
Collapse
Affiliation(s)
- J W Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - S Y Moon
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - J H Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - J K Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - D S Lee
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - K C Jung
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Y W Song
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - E B Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| |
Collapse
|
47
|
Zhang LT, Kim HK, Choi BR, Zhao C, Lee SW, Jang KY, Park JK. Analysis of testicular-internal spermatic vein variation and the recreation of varicocoele in a Sprague-Dawley rat model. Andrology 2014; 2:466-73. [PMID: 24659569 DOI: 10.1111/j.2047-2927.2014.00201.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 12/22/2013] [Accepted: 02/03/2014] [Indexed: 01/23/2023]
Abstract
Many laboratories tried to recreate the varicocoele model have met with varied success. To recreate a consistent varicocoele model by exploring the anatomic variability of the testicular-spermatic venous system in Sprague-Dawley (SD) rats. Seventy-two sexually mature SD male rats were randomly divided into three groups containing 24 rats per group. Partial ligation of the left renal vein and internal spermatic vein (ISV) communicating branches to common iliac vein and ISV communicating branches ligation (RVISVCBCIV) or partial ligation of the left renal vein and ISV communicating branches ligation (RVISVCB). The results showed that the mean diameter of the left ISV was significantly increased in the RVISVCBCIV group compared with the control and RVISVCB groups (p < 0.001). Using ISV as the reference, the sensitivity of varicocoele was 71.43%, and the specificity was 80%. In addition, the positive predictive value was 83.33%, and the negative predictive value was 66.67%. Sperm count, motility, Johnsen score and the spermatogenic cell density were lower in the RVISVCBCIV group compared with the control (p < 0.01). The apoptotic index was higher in the RVISVCBCIV group compared with control groups (p < 0.01). The RVISVCBCIV provides a more effective method for establishing a varicocoele-induced model.
Collapse
Affiliation(s)
- L T Zhang
- Department of Urology, Chonbuk National University Medical School and Institute for Medical Sciences, Chonbuk National University and Biomedical Research Institute and Clinical Trial Center for Medical Devices of Chonbuk National University Hospital, Jeonju, Korea
| | | | | | | | | | | | | |
Collapse
|
48
|
Ul-Islam M, Shehzad A, Khan S, Khattak WA, Ullah MW, Park JK. Antimicrobial and biocompatible properties of nanomaterials. J Nanosci Nanotechnol 2014; 14:780-791. [PMID: 24730297 DOI: 10.1166/jnn.2014.8761] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The rapid development of drug-resistant characteristics in pathogenic viral, bacterial, and fungal species and the consequent spread of infectious diseases are currently receiving serious attention. Indeed, there is a pressing demand to explore novel materials and develop new strategies that can address these issues of serious concern. Nanomaterials are currently proving to be the most capable therapeutic agents to cope with such hazards. The exceptional physiochemical properties and impressive antimicrobial capabilities of nanoparticles have provoked their utilization in biomedical fields. Nanomaterials of both organic and inorganic nature have shown the capabilities of disrupting microbial cells through different mechanisms. Along with the direct influence on the microbial cell membrane, DNA and proteins, these nanomaterials produce reactive oxygen species (ROS) that damage cell components and viruses. Currently, a serious hazard associated with these antimicrobial nanomaterials is their toxicity to human and animal cells. Extensive studies have reported the dose, time, and cell-dependent toxicology of various nanomaterials, and some have shown excellent biocompatible properties. Nevertheless, there is still debate regarding the use of nanomaterials for medical applications. Therefore, in this review, the antimicrobial activities of various nanomaterials with details of their acting mechanisms were compiled. The relative toxic and biocompatible behavior of nanomaterials emphasized in this study provides information pertaining to their practical applicability in medical fields.
Collapse
|
49
|
Park JK, Kang TG, Kang MY, Park JE, Cho IA, Shin JK, Choi WJ, Lee SA, Choi WS, Kwon HM, Lee JH, Paik WY. Increased NFAT5 expression stimulates transcription of Hsp70 in preeclamptic placentas. Placenta 2013; 35:109-16. [PMID: 24398013 DOI: 10.1016/j.placenta.2013.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 12/10/2013] [Accepted: 12/13/2013] [Indexed: 01/25/2023]
Abstract
OBJECTIVE We investigated the expression of heat shock protein 70 (Hsp70), nuclear factor of activated T cells 5 (NFAT5), and hypoxia-induced factor-1α (HIF-1α) in the placentas of normal and preeclamptic pregnancies and in human placental hypoxia models in vitro to examine the regulatory mechanisms of placental Hsp70 expression. METHODS The expression levels of HIF-1α, NFAT5, and Hsp70 were examined in placental samples from 10 females with preeclampsia and 10 normotensive control patients and in human choriocarcinoma trophoblast cells treated with 1 mM CoCl2 by western blotting. Using models of placental hypoxia, pharmacological inhibition of HIF-1α with chetomin and shRNA knockdown and overexpression of NFAT5 were performed to investigate the roles of HIF-1α and NFAT5 in induction of Hsp70 by placental hypoxia. RESULTS The levels of HIF-1α, NFAT5, and Hsp70 expression were significantly higher in the preeclamptic compared to normal placentas. In the placental hypoxia models, the expression of HIF-1α, NFAT5, and Hsp70 were significantly higher after 3, 6, and 12 h of 1 mM CoCl2 treatment, respectively. Pharmacological inhibition of HIF-1α suppressed the induction of NFAT5 and Hsp70 at the protein level. shRNA knockdown of NFAT5 suppressed the induction of Hsp70 protein and overexpression of NFAT5 stimulated the induction of Hsp70 mRNA and protein in models of human placental hypoxia in vitro. CONCLUSION HIF-1α positively regulates the induction of NFAT5 and Hsp70 by placental hypoxia and NFAT5 stimulates transcription of Hsp70 in response to placental hypoxia in models of human placental hypoxia in vitro.
Collapse
Affiliation(s)
- J K Park
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - T G Kang
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - M Y Kang
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - J E Park
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - I A Cho
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - J K Shin
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W J Choi
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - S A Lee
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W S Choi
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea; Department of Anatomy, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - H M Kwon
- School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute and Science and Technology, Ulsan, South Korea
| | - J H Lee
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W Y Paik
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea.
| |
Collapse
|
50
|
Jeon HW, Sung SW, Park JK, Song H. Thoracoscopic surgical management of esophageal benign tumor. J Cardiothorac Surg 2013. [PMCID: PMC3845504 DOI: 10.1186/1749-8090-8-s1-o258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|