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Son WC, Kwon JG, Hong JP, Park CS, Kim SA, Do JH, Cheon H, Gelvosa MN, Suh HS, Jeon JY. Clinical Utility of Bioelectrical Impedance Analysis Parameters for Evaluating Patients with Lower Limb Lymphedema after Lymphovenous Anastomosis. J Reconstr Microsurg 2023; 39:171-178. [PMID: 35817050 DOI: 10.1055/s-0042-1750126] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND In lymphedema, lymphatic fluid accumulates in the interstitial space, and localized swelling appears. Lymphovenous anastomosis (LVA) is the most widely used surgery to rebuild a damaged lymphatic system; however, assessing outcome of LVA involves performing volume measurements, which provides limited information on body composition changes. Therefore, we analyzed the bioelectrical impedance analysis (BIA) parameters that can reflect the status of lymphedema patients who underwent LVA. METHODS We retrospectively reviewed records of 42 patients with unilateral lower extremity lymphedema who had LVA. We measured the perioperative BIA parameters such as extracellular water (ECW) ratio and volume as defined by the percentage of excess volume (PEV). We evaluated the relationship between the amount of change in PEV and in BIA parameters before and after surgery. We confirmed the correlation between ΔPEV and BIA parameters using Spearman's correlation. RESULTS Most patients included had secondary lymphedema due to cancer. Average age was 51.76 years and average body mass index was 23.27. PEV and all BIA parameters after surgery showed a significant difference (p < 0.01) compared with preoperative measurements. The ECW ratio aff/unaff showed the strongest correlation with PEV with a correlation coefficient of 0.473 (p < 0.01). CONCLUSION Our findings suggest that BIA parameters, especially ECW ratio aff/unaff could reflect the status of patients with lower limb lymphedema after LVA. Appropriate use of BIA parameters may be useful in the postoperative surveillance of patients.
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Affiliation(s)
- Woo Chul Son
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jin Geun Kwon
- Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Joon Pio Hong
- Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Chang Sik Park
- Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang Ah Kim
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jung Hwa Do
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hwayeong Cheon
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Korea
| | - Ma Nessa Gelvosa
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyun Suk Suh
- Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Yong Jeon
- Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Lee HJ, Park CS, Lee S, Park JB, Kim HK, Park SJ, Kim YJ, Lee SP. Systemic proinflammatory-profibrotic response in aortic stenosis patients with diabetes and its relationship with myocardial remodeling and clinical outcome. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1621] [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
It is unclear whether and how diabetes mellitus may aggravate myocardial fibrosis and remodeling in the pressure-overloaded heart. We investigated the impact of diabetes on the prognosis of aortic stenosis (AS) patients and its underlying mechanisms using comprehensive noninvasive imaging studies and plasma proteomics.
Methods
Severe AS patients undergoing both echocardiography and cardiovascular magnetic resonance (CMR) (n=253 of which 66 had diabetes) comprised the imaging cohort. The degree of replacement and diffuse interstitial fibrosis by late gadolinium enhancement (LGE) and extracellular volume fraction (ECV) was quantified using CMR. Plasma samples were analyzed with the multiplex proximity extension assay for 92 proteomic biomarkers in a separate biomarker cohort of severe AS patients (n=100 of which 27 had diabetes).
Results
In the imaging cohort, diabetic patients were older (70.4±6.8 vs. 66.7±10.1 years) and had a higher prevalence of ischemic heart disease (28.8% vs. 9.1%), with more advanced ventricular diastolic dysfunction. On CMR, diabetic patients had increased replacement and diffuse interstitial fibrosis (LGE% 0.3 [0.0–1.6] versus 0.0 [0.0–0.5], p=0.009; ECV% 27.9 [25.7–30.1] versus 26.7 [24.9–28.5], p=0.025) (Figure 1).
Plasma proteomics analysis of the biomarker cohort revealed that 9 proteins (E-selectin, interleukin-1 receptor type 1, interleukin-1 receptor type 2, galectin-4, intercellular adhesion molecule 2, integrin beta-2, galectin-3, growth differentiation factor 15, and cathepsin D) are significantly elevated in diabetic AS patients (Figure 2). Pathway over-representation analyses of the plasma proteomics with Gene Ontology terms indicated that pathways related to inflammatory response and extracellular matrix components were enriched, suggesting that diabetes is associated with systemic effects that evoke proinflammatory and profibrotic response to the pressure-overloaded myocardium.
During follow-up (median 6.3 years [IQR 5.2–7.2]) of the imaging cohort, 232 patients received aortic valve replacement (AVR) with 53 unexpected heart failure admissions or death. Diabetes was a significant predictor of heart failure and death, independent of clinical covariates and AVR (hazard ratio 1.88, 95% confidence interval 1.06–3.31, p=0.030).
Conclusion
Plasma proteomic analyses indicate that diabetes potentiates the systemic proinflammatory and profibrotic milieu in AS patients. These systemic biological changes underlie the increase of myocardial fibrosis, diastolic dysfunction, and worse clinical outcomes in severe AS patients with concomitant diabetes.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): National Research Foundation of Korea
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Affiliation(s)
- H J Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - C S Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S Lee
- Asan Medical Center, Internal Medicine , Seoul , Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiovascular Imaging Center , Seoul , Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
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Park CS. Three-dimensional principal strain, twist and torsion as predictors of cancer therapeutics related cardiac dysfunction in breast cancer patients. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.058] [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
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Research Foundation of Korea
Background
Breast cancer patients usually received anti-cancer chemotherapy even in the early stage. Main regimen includes anthracycline and trastuzumab which are known to have cardiotoxicity. Three-dimensional echocardiography can provide all conventional and deformational parameters in one image but its utility is limited.
Methods
The patients underwent adriamycin based chemotherapy and three-dimensional echocardiography before and 1 year after were included. All the analyses of 3-dimensioanl echocardiographic images were performed using 4D LV Analysis (TomTec, Unterschleissheim, Germany). Cancer therapeutics related cardiac dysfunction was defined as decrease in the value of longitudial strian more than 15 % in the follow up compared to the pre-chemotherapy exam.
Results
: The number of patients was 75. One patient was admitted due to symptoms related to heart failure. Multivariate logistic regression analysis showed that 3-dimensional longitudial strian measured before chemotherapy can predict CTRCD (Odds ratio; 95% confidence interval: 0.63; 0.42-0.93. p value = 0.02).
Conclusion
3-dimensional deformation parameters can be used as predictors of CTRCD in breast cancer patients and it should be applied more widely in clinical settings. Abstract Figure. Usefulness as a predictor
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Affiliation(s)
- CS Park
- Catholic University Medical College, Seoul, Korea (Republic of)
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Dolganov PV, Shuravin NS, Dolganov VK, Kats EI, Stannarius R, Harth K, Trittel T, Park CS, Maclennan JE. Transient hexagonal structures in sheared emulsions of isotropic inclusions on smectic bubbles in microgravity conditions. Sci Rep 2021; 11:19144. [PMID: 34580344 PMCID: PMC8476617 DOI: 10.1038/s41598-021-98166-7] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/19/2021] [Indexed: 11/08/2022] Open
Abstract
We describe the collective behavior of isotropic droplets dispersed over a spherical smectic bubble, observed under microgravity conditions on the International Space Station (ISS). We find that droplets can form two-dimensional hexagonal structures changing with time. Our analysis indicates the possibility of spatial and temporal periodicity of such structures of droplets. Quantitative analysis of the hexagonal structure including the first three coordination circles was performed. A peculiar periodic-in-time ordering of the droplets, related to one-dimensional motion of droplets with non-uniform velocity, was found.
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Affiliation(s)
- P V Dolganov
- Institute of Solid State Physics, Russian Academy of Sciences (ISSP RAS), 142432, Chernogolovka, Moscow Region, Russia
| | - N S Shuravin
- Institute of Solid State Physics, Russian Academy of Sciences (ISSP RAS), 142432, Chernogolovka, Moscow Region, Russia
| | - V K Dolganov
- Institute of Solid State Physics, Russian Academy of Sciences (ISSP RAS), 142432, Chernogolovka, Moscow Region, Russia.
| | - E I Kats
- L.D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Region, Russia
| | - R Stannarius
- Institute of Physics, Otto von Guericke University, 39106, Magdeburg, Germany
| | - K Harth
- Institute of Physics, Otto von Guericke University, 39106, Magdeburg, Germany
| | - T Trittel
- Institute of Physics, Otto von Guericke University, 39106, Magdeburg, Germany
| | - C S Park
- Department of Physics, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - J E Maclennan
- Department of Physics, University of Colorado Boulder, Boulder, CO, 80309, USA
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Lee SR, Park CS, Choi EK, Ahn HJ, Han KD, Oh S, Lip GYH. Hypertension burden and the risk of new-onset atrial fibrillation: a nationwide population-based study. Europace 2021. [DOI: 10.1093/europace/euab116.508] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
The association between the cumulative hypertension burden and the development of atrial fibrillation (AF) is unclear.
Purpose
We aimed to investigate the relationship between hypertension burden and the development of incident AF.
Methods and Results: Using the Korean National Health Insurance Service database, we identified 3,726,172 subjects who underwent four consecutive annual health checkups between 2009 and 2013, with no history of AF. During the median follow-up of 5.2 years, AF was newly diagnosed in 22,012 patients (0.59% of the total study population, 1.168 per 1,000 person-years). Using the BP values at each health checkup, we determined the burden of hypertension (systolic blood pressure [SBP] ≥130 mmHg or diastolic blood pressure [DBP] ≥80 mmHg), stratified as 0 to 4 per the hypertension criteria. The subjects were grouped according to hypertension burden scale 1 to 4: 20% (n = 742,806), 19% (n = 704,623), 19% (n = 713,258), 21% (n = 766,204), and 21% (n = 799,281). Compared to normal people, subjects with hypertension burdens of 1, 2, 3, and 4 were associated with an 8%, 18%, 26%, and 27% increased risk of incident AF, respectively. On semi-quantitative analyses with further stratification of stage 1 (SBP 130-139 mmHg or DBP 80-89 mmHg) and stage 2 (SBP ≥140 mmHg or DBP ≥90 mmHg) hypertension, the risk of AF increased with the hypertension burden by up to 71%.
Conclusions
Both a sustained exposure and the degree of increased blood pressure were associated with an increased risk of incident AF. Tailored blood pressure management should be emphasized to reduce the risk of AF. Abstract Figure.
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Affiliation(s)
- SR Lee
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - CS Park
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - EK Choi
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - HJ Ahn
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - KD Han
- The Catholic University of Korea, Seoul, Korea (Republic of)
| | - S Oh
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - GYH Lip
- Liverpool Heart and Chest Hospital, Liverpool Centre for Cardiovascular Science, Liverpool, United Kingdom of Great Britain & Northern Ireland
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Park CS. More exaggerated blood pressure morning surge is associated with more deteriorated cardiac function evaluated by 3-dimensional echocardiographic examination. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356.133] [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: 11/15/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): The Korean Society of Hypertension
Background
We studied the association between the exaggerated morning blood pressure (BP) surge and cardiac function evaluated by 3-dimensional echocardiography in naïve hypertensive patient.
Methods and results
We studied longitudinal, circumferential and principal strain as well as torsion in 163 naïve hypertensive patients in whom ambulatory BP monitoring was performed. The morning surge (MS) was calculated as mean systolic BP during the 2 hours after awakening minus mean systolic BP during 1 hour included the lowest sleep BP. Patients were divided into 2 groups (MS 25 percentile). There were no differences of left ventricular ejection fraction between the groups (MS: no MS, 62.0 ± 2.4: 62.2 ± 3.3, p = 0.807) but global longitudinal (MS: no MS, -21.2 ± 1.7: -22.0 ± 2.3, p = 0.072), circumferential (MS: no MS, -30.1 ± 2.0: -31.1 ± 2.7, p = 0.045), principal strain (MS: no MS, -33.9 ± 1.7: -35.5 ± 2.8, p < 0.001), twist(MS: no MS, 9.6 ± 6.1: 12.1 ± 4.8, p = 0.011) and torsion (MS: no MS, 1.23 ± 0.78: 1.49 ± 0.62, p = 0.042) were different between the groups. We also divided the groups into four according to the degree of morning surge and 4th quartile group showed more decreased cardiac functions.
Conclusion
Left ventricular mechanical parameters deteriorate from the very early stage of hypertension in the patients with morning surge. And it is more exaggerated in the higher morning blood pressure elevation group.
Abstract Figure.
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Affiliation(s)
- CS Park
- Catholic University Medical College, Seoul, Korea (Republic of)
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Park CS, Ragland D, Adeola O. Amino acid digestibility in corn distillers' dried grains with solubles in pigs at different dietary levels of casein and test ingredient. Animal 2020; 15:100147. [PMID: 33785183 DOI: 10.1016/j.animal.2020.100147] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 11/05/2020] [Accepted: 11/10/2020] [Indexed: 11/30/2022] Open
Abstract
Digestibility of amino acids (AA) in feed ingredients for pigs has been generally determined by feeding experimental diets containing test feedstuffs as a sole source of N, which may lead to the deficiency or imbalance of AA and hinder an accurate determination of digestibility values. Therefore, the addition of casein in experimental diets may ameliorate the potential negative effects of deficiency or imbalance of AA. In addition, the concentration of test feedstuffs in experimental diets may affect the digestibility of AA in test feedstuffs. Two experiments were conducted with corn distillers' dried grains with solubles (DDGS) as the test feedstuff to determine the effects of increasing concentrations of casein in experimental diets on standardized ileal digestibility (SID) of AA in DDGS (experiment 1) and to investigate the effects of two concentrations of DDGS in experimental diets with or without the addition of casein on SID of AA in DDGS (experiment 2). In experiment 1, 20 barrows (initial BW = 45.3 ± 1.80 kg) surgically fitted with T-cannulas at the distal ileum were allocated to a quadruplicate 5 × 2 incomplete Latin square design with five diets and two periods. Four isonitrogenous diets containing increasing concentrations of casein from 0 to 165 g/kg with decreasing concentrations of DDGS from 466.8 to 0 g/kg and a N-free diet were prepared. The SID of AA, except for arginine, cysteine, and glycine, in DDGS linearly decreased (P < 0.05) with increasing concentrations of casein in experimental diets. Quadratic response (P = 0.023) was observed in the SID of lysine in DDGS when the concentration of casein in experimental diets increased. In experiment 2, the same 20 barrows (initial BW = 52.8 ± 2.99 kg) and experimental design as experiment 1 were used with different diets, which were prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and that of casein at 0 or 110 g/kg. Regardless of the addition of casein, pigs fed experimental diets containing 466.8 g/kg DDGS had greater (P < 0.01) SID of indispensable AA, except for tryptophan, in DDGS than those fed diets containing 155.6 g/kg DDGS. In conclusion, the addition of casein in experimental diets did not affect the SID of AA in DDGS, whereas the SID of AA in DDGS decreased as the concentration of DDGS in diets decreased.
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Affiliation(s)
- C S Park
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - D Ragland
- Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - O Adeola
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
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Babatunde OO, Osho SO, Park CS, Adeola O. Additivity of apparent and standardized ileal digestibility of phosphorus in mixed diets containing corn and soybean meal fed to broiler chickens. Poult Sci 2020; 99:6907-6913. [PMID: 33248606 PMCID: PMC7704994 DOI: 10.1016/j.psj.2020.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/08/2020] [Accepted: 09/03/2020] [Indexed: 11/29/2022] Open
Abstract
Phosphorus (P) is an integral part of diet formulation for broiler chickens as P is required for various biochemical processes essential to life. A study was designed to examine the additivity of apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of P in mixed diets containing corn and soybean meal (SBM) with or without phytase supplementation. Birds were fed a commercial starter diet from day 0 to 21 after hatching and then allotted to 7 dietary treatments in a randomized complete block design with the BW as a blocking factor. Four semipurified diets were prepared to contain corn or SBM as the sole source of P with or without the addition of phytase at 1,000 phytase units/kg of diet. Two mixed diets were also prepared to contain corn and SBM with or without the addition of phytase at 1,000 phytase units/kg diet. A P-free diet (PFD) was formulated to determine the basal ileal endogenous loss of P. There were 16 replicate cages of the PFD and 8 replicate cages of the 6 experimental diets, with 8 birds per replicate cage for a total of 512 birds. Diets were fed for 3 d. The ileal digesta of birds were collected from the distal two-thirds of the ileum on day 24 after hatching. The SID of P in corn and SBM were 52.2 and 65.4%, respectively (SEM = 1.37). The addition of phytase improved (P < 0.05) both the AID and SID of P in the corn, SBM, and mixed diets. The determined AID or SID in the corn and SBM with or without phytase was used to predict the AID or SID in the mixed diets. There were no differences between the predicted and determined digestibility values in the mixed diets for either AID or SID of P and thus additive. Phytase supplementation of the mixed diet did not influence the additivity of AID or SID. In conclusion, the AID or SID of P in the corn and SBM was additive in the mixed diets containing corn and SBM with or without the addition of phytase.
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Affiliation(s)
- O O Babatunde
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - S O Osho
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - C S Park
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - O Adeola
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907.
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Lee SH, Park JS, Kim SY, Kim DS, Kim YW, Chung MP, Uh ST, Park CS, Park SW, Jeong SH, Park YB, Lee HL, Shin JW, Lee JH, Jegal Y, Lee HK, Kim YH, Song JW, Park MS. Clinical features and prognosis of patients with idiopathic pulmonary fibrosis and chronic obstructive pulmonary disease. Int J Tuberc Lung Dis 2020; 23:678-684. [PMID: 31315699 DOI: 10.5588/ijtld.18.0194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
<sec> <title>BACKGROUND</title> Idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD) share common risk factors. They could therefore be expressed in a single patient. However, the prevalence, clinical characteristics and prognosis of individuals with comorbid IPF and COPD are not known. </sec> <sec> <title>METHOD</title> From 2003 to 2007, the Korean Interstitial Lung Disease Study Group created a register for idiopathic interstitial pneumonia using 2002 ATS/ERS (American Thoracic Society/European Respiratory Society) criteria. Of the 1546 IPF patients assessed, 143 had decreased lung function consistent with COPD (IPF-COPD). COPD was diagnosed based on age (≥40 years) and pulmonary function (forced expiratory volume in 1 sec [FEV1]/forced vital capacity [FVC] ratio < 0.7). </sec> <sec> <title>RESULTS</title> The median age of the IPF-COPD group was 71.0 years (interquartile range 66.0-76.0); most patients were male (88.1%). FVC (%) was significantly higher in the IPF-COPD group; however, FEV1 (%) was significantly lower in the IPF-COPD group (P < 0.001). Diffusing capacity of the lung for carbon monoxide (DLCO) was not significantly different between the two groups. In survival analysis, age and FVC (%), but not COPD, were significantly associated with prognosis (respectively P = 0.003, 0.001 and 0.401). COPD severity was also not related to prognosis (P = 0.935). </sec> <sec> <title>CONCLUSION</title> The prevalence of IPF-COPD was estimated to be ∼9.2% among all IPF patients; prognosis of patients with IPF-COPD was not worse than those with IPF alone. </sec>.
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Affiliation(s)
- S H Lee
- Yonsei University College of Medicine, Seoul, Department of Internal Medicine, National University College of Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University Bundang Hospital, Seoul
| | - J S Park
- Department of Internal Medicine, National University College of Medicine, Division of Pulmonary and Critical Care Medicine, Seoul National University Bundang Hospital, Seoul
| | - S Y Kim
- Division of Pulmonology, Department of Internal Medicine, Severance Hospital, Institute of Chest Diseases, Yonsei University College of Medicine, Seoul
| | - D S Kim
- Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul
| | - Y W Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine and Lung Institute, Seoul National University College of Medicine, Seoul
| | - M P Chung
- Division of Pulmonary and Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - S T Uh
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul
| | - C S Park
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Gyeonggi-do
| | - S W Park
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Gyeonggi-do
| | - S H Jeong
- Division of Pulmonology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon
| | - Y B Park
- Division of Pulmonary, Allergy & Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul
| | - H L Lee
- Pulmonary Division, Department of Internal Medicine, Inha University Hospital, Incheon
| | - J W Shin
- Division of Pulmonary Medicine, Department of Internal Medicine, Chung Ang University College of Medicine, Seoul
| | - J H Lee
- Department of Internal Medicine, Ewha Womans University School of Medicine, Ewha Medical Research Institute, Seoul
| | - Y Jegal
- Division of Pulmonary Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan
| | - H K Lee
- Division of Critical Care and Pulmonary Medicine, Department of Internal Medicine, Inje University Pusan Paik Hospital, Busan
| | - Y H Kim
- Division of Allergy and Pulmonology, Department of Internal Medicine, Bucheon St Mary's Hospital, The Catholic University of Korea School of Medicine, Seoul, South Korea
| | - J W Song
- Division of Pulmonary and Critical Care Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul
| | - M S Park
- Division of Pulmonology, Department of Internal Medicine, Severance Hospital, Institute of Chest Diseases, Yonsei University College of Medicine, Seoul
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Park CS, Gwon A, Ahn HS, Kim GH, Cho JS, Youn HJ. P1535 Interventricular interaction can result in right ventricular dysfunction in interventricular septum involved myocardial infarction patient. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.957] [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
Previous studies revealed that interventricular septal thickness is related to right ventricular dysfunction after anterior myocardial infarction. This finding suggest that interventricular septal function can affect right ventricular function in myocardial infarction patients. We assumed that right ventricular free wall strain values measured using dedicated software can be affected in the setting of ischemic insult on interventricular septum in long-term follow up.
Methods
The patients diagnosed as acute myocardial infarction due to left anterior descending artery disease who underwent successful revascularization were enrolled. Echocardiographic exams were performed at least 2 times, within 72 hours and 1 year after the revascularization. Strain values of interventricular septum and right ventricular free wall were derived from the raw-dicom images. The analysis was performed using the dedicated software for the measurement of right ventricular strain.
Results
Total 65 patients were enrolled. The values of global left ventricular strain were increased after the follow up. There were no changes in global longitudinal strain of the right ventricle. But longitudinal stain values acquired from right ventricular free walls were decreased even the strain values measured at left ventricle and interventricular septum were improved.
Conclusion
Interventricular septal dysfunction due to ischemic injury can affect long term right ventricular dysfunction. This finding suggests the interventricular dependence between cardiac chambers and can provide the development of heart failure in myocardial infarction patient even after the successful revascularization.
Strain values of both ventricles Left ventricle after revascularization (n = 65) 1 year later (n = 65) P values Global longitudinal strain (%) -12.84 ± 4.50 -15.62 ± 4.45 <0.001 Septal longitudinal strain (%) -10.77 ± 5.96 -14.02 ± 5.26 <0.001 Right ventricle Global longitudinal strain (%) -19.36 ± 4.57 -19.47 ± 4.83 0.872 Septal longitudinal strain (%) -14.82 ± 4.48 -16.43 ± 6.03 0.055 Free wall longitudinal strain (%) -20.23 ± 5.33 -17.82 ± 5.70 0.010
Abstract P1535 Figure. Right ventricular segmental strain
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Affiliation(s)
- C S Park
- Catholic University Medical College, Seoul, Korea (Republic of)
| | - A Gwon
- Catholic University Medical College, Seoul, Korea (Republic of)
| | - H S Ahn
- Catholic University Medical College, Seoul, Korea (Republic of)
| | - G H Kim
- Catholic University Medical College, Seoul, Korea (Republic of)
| | - J S Cho
- Catholic University Medical College, Seoul, Korea (Republic of)
| | - H J Youn
- Catholic University Medical College, Seoul, Korea (Republic of)
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Park JB, Park CS, Choi YJ, Kwak S, Moon I, Hwang IC, Park JJ, Lee SP, Park JH, Cho GY. P785 Left ventricular geometry and myocardial contractility modulate impact of statins on prognosis in patients with acute heart failure. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.444] [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: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
N/A
Background/Introduction: The benefit of statins in patients with heart failure (HF) remains controversial and the mechanism of action is largely speculative. We investigated whether survival benefit with statins differs according to left ventricular (LV) geometry and myocardial contractility in acute HF patients.
Methods
We enrolled 1792 acute HF patients receiving statins and 2296 patients not receiving statins admitted from 2009 to 2016. The LV and right ventricular (RV) global longitudinal strain (GLS) was assessed as a measure of myocardial contractility. Patients were classified into 2 groups based on ischemic etiology of HF and further divided into 4 subgroups according to the median values of LV-GLS or RV-GLS. The primary outcome was 5-year all-cause mortality. The study protocol was approved by the ethics committee at each institute and complied with the Declaration of Helsinki. The need for written informed consent was waived.
Results
During the 5-year follow-up, 1740 (40.4%) patients died and they had more unfavorable baseline characteristics. Statin therapy was significantly associated with improved survival in overall patients and in both groups with and without ischemic etiology (all p <0.001). Patients with concentric remodeling/hypertrophy and eccentric hypertrophy demonstrated survival benefit with statin therapy (P = 0.033, 0.004, and 0.008, respectively), while those with normal geometry did not (p = 0.123). In the non-ischemic HF group, survival benefit with statin therapy was confined to patients with low LV-GLS (p = 0.045) or those with low RV-GLS p = 0.003). On the contrary, in ischemic HF group, survival benefit with statin therapy was observed in all patients regardless of the values of LV-GLS or RV-GLS. Significant interactions were present between statin use and diabetes mellitus and IHD (p for interaction = 0.027 and 0.003, respectively) regarding mortality.
Conclusions
LV geometry and myocardial contractility may modulate the effects of statins in patients with acute HF. These echocardiographic measures can provide prognostic information to guide tailored statin treatment in this population. Our findings may also help to develop more well-designed prospective studies, in terms of a more homogenous study population, to confirm survival benefit with statin therapy.
Abstract P785 Figure. Multivariate Cox survival curves
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Affiliation(s)
- J B Park
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - C S Park
- Korea Advanced Institute of Science and Technology, Daejeon, Korea (Republic of)
| | - Y J Choi
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - S Kwak
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - I Moon
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - I C Hwang
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - J J Park
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - J H Park
- Chungnam National University Hospital, Daejeon, Korea (Republic of)
| | - G Y Cho
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
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Shin DY, Jang T, Song HY, Kim SM, Park YH, Park CS, Oh H, Baek J, Chae J, Lee CS. Abstract A108: Specific and traceless payload release from HER2-ADC containing LBG-linker prodrug by the action of lysosomal β-glucuronidase. Mol Cancer Ther 2019. [DOI: 10.1158/1535-7163.targ-19-a108] [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: 11/16/2022]
Abstract
Abstract
Many antibody-drug conjugates (ADCs) have actively been evaluated in clinical trials since Mylotarg was approved in 2001, but only 4 more have been approved by the FDA. The main reason for the poor results is yet to overcome worse risk-benefit than the expected from ADC approach. Controlled payload release specifically at cancer cells would significantly reduce systemic toxicity. Herein, we report that LBG000-linker can be selectively cleaved from ADC to release free toxins in a traceless manner by β-glucuronidase. Lysosomal β-glucuronidase is overexpressed in many cancer cell lines, and its enzymatic activity is much higher in acidic condition than neutral pH. As a model reaction, an LBG-linker-MMAE conjugate, LCB14-0302, was incubated with a β-glucuronidase in vitro resulting clean release of free MMAE while other lysosomal enzymes such as cathepsin B or heparanase did not generate the free toxin. We also confirmed that there was no free MMAE found when β-glucuronidase inhibitor, β-D-glucuronic acid, was treated. Also, lysosomal extract incubation with LCB14-0302 clearly demonstrated the traceless toxin release by β-glucuronidase regardless of other enzymatic disturbance. Therefore, these results strongly suggest that LBG-linker is highly stable and specific to β-glucuronidase among hundreds of enzymes in the lysosome.
Citation Format: Dong Yeon Shin, Taeik Jang, Ho Young Song, Sung Min Kim, Yun-Hee Park, Chang Sik Park, Hwanhee Oh, Juyuel Baek, Jeiwook Chae, Chang-Sun Lee. Specific and traceless payload release from HER2-ADC containing LBG-linker prodrug by the action of lysosomal β-glucuronidase [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics; 2019 Oct 26-30; Boston, MA. Philadelphia (PA): AACR; Mol Cancer Ther 2019;18(12 Suppl):Abstract nr A108. doi:10.1158/1535-7163.TARG-19-A108
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Park J, Lee M, Kim J, Choi HJ, Kwon A, Chung HS, Hong SH, Park CS, Choi JH, Chae MS. Intraoperative Management to Prevent Cardiac Collapse in a Patient With a Recurrent, Large-volume Pericardial Effusion and Paroxysmal Atrial Fibrillation During Liver Transplantation: A Case Report. Transplant Proc 2019; 51:568-574. [PMID: 30879592 DOI: 10.1016/j.transproceed.2018.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 12/29/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pericardial effusion is a common feature of end-stage liver disease. In this case report we describe the intraoperative management of recurrent pericardial effusion, without re-pericardiocentesis, to prevent circulatory collapse during a critical surgical time-point; that is, during manipulation of the major vessels and graft reperfusion. METHODS A 47-year-old woman with hepatitis B was scheduled to undergo deceased donor liver transplantation (LT). A large pericardial effusion was preoperatively identified using transthoracic echocardiography (TTE). The patient also had paroxysmal atrial fibrillation. Two days before surgery, preemptive pericardiocentesis was performed and the 1150-mL effusion was drained. Intraoperatively, recurrence of the large pericardial effusion was identified using transesophageal echocardiography (TEE). During inferior vena cava manipulation, the surgeon consulted the anesthesiologist to evaluate the hemodynamic changes in the patient. After 3 attempts, the transplant team was able to determine the most appropriate anastomosis site, defined as that with the least impact on cardiac function. To prevent the development of severe postreperfusion syndrome, 10% MgSO4 (2 g) was gradually infused 20 minutes before portal vein declamping, and immediately before graft reperfusion a 100-μg bolus of epinephrine was administered. RESULTS During graft reperfusion, there was no evidence of heart chamber collapse or flow disturbance, as seen on the TEE findings. Postoperatively, the patient recovered completely and was discharged from the hospital. Six months after surgery, there was no sign of pericardial effusion on follow-up TTE. CONCLUSION Our intraoperative strategy may prevent cardiac collapse in patients with pericardial effusion detected during LT. Intraoperative TEE plays an important role in guiding hemodynamic management.
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Affiliation(s)
- J Park
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M Lee
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Kim
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H J Choi
- Department of Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - A Kwon
- Department of Cardiology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H S Chung
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S H Hong
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - C S Park
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J H Choi
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M S Chae
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Chae MS, Kim Y, Oh SA, Jeon Y, Choi HJ, Kim YH, Hong SH, Park CS, Huh J. Intraoperative Management of a Patient With Impaired Cardiac Function Undergoing Simultaneous ABO-Compatible Liver and ABO-Incompatible Kidney Transplant From 2 Living Donors: A Case Report. Transplant Proc 2018; 50:3988-3994. [PMID: 30471833 DOI: 10.1016/j.transproceed.2018.08.017] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 08/16/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Combined liver and kidney transplant is a very complex surgery. To date, there has been no report on the intraoperative management of patients with impaired cardiac function undergoing simultaneous ABO-compatible liver and ABO-incompatible kidney transplant from 2 living donors. CASE REPORT A 60-year-old man underwent simultaneous ABO-compatible liver and ABO-incompatible kidney transplant from 2 living donors because of IgA nephropathy and alcoholic liver cirrhosis. The preoperative cardiac findings revealed continuous aggravation, shown by large left atrial enlargement, severe left ventricular hypertrophy, a very prolonged QT interval, and a calcified left anterior descending coronary artery. Severe hypotension with very weak pulsation and severe bradycardia developed, with an irregular junctional rhythm noted immediately after the liver graft was reperfused. Although epinephrine was administered as a rescue drug, hemodynamics did not improve, and central venous pressure and mean pulmonary arterial pressure increased to potentially fatal levels. Emergency phlebotomy via the central line was performed. Thereafter, hypotension and bradycardia recovered gradually as the central venous pressure and mean pulmonary arterial pressure decreased. The irregular junctional rhythm returned to a sinus rhythm, but the QTc interval was slightly more prolonged. Because of poor cardiac capacity, the volume and rate of fluid infusion were increased aggressively to maintain appropriate kidney graft perfusion after confirming vigorous urine production of the graft. CONCLUSIONS A heart with impaired function due to both end-stage liver and kidney diseases may be less able to withstand surgical stress. Further study on cardiac dysfunction will be helpful for the management of patients undergoing complex transplant surgery.
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Affiliation(s)
- M S Chae
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Kim
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S A Oh
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Jeon
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H J Choi
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y H Kim
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S H Hong
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - C S Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Huh
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Park CS, Jang HJ, Lee JH, Oh MY, Kim HJ. Tetrahydrocurcumin Ameliorates Tacrolimus-Induced Nephrotoxicity Via Inhibiting Apoptosis. Transplant Proc 2018; 50:2854-2859. [PMID: 30401411 DOI: 10.1016/j.transproceed.2018.03.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 03/06/2018] [Indexed: 01/18/2023]
Abstract
BACKGROUND Calcineurin inhibitors are effective immunosuppressive agents, but associated adverse effects such as nephrotoxicity may limit efficacy. Tacrolimus (FK506) is an immunosuppressive drug used mainly to lower the risk of organ rejection after allogeneic organ transplant. Adverse effects of FK-506 can prompt patients to end treatment despite the efficacy. In the present study, we investigated the protective effect and mechanism of tetrahydrocurcumin (THC) on FK506-induced renal damage, apoptosis, and oxidative stress to evaluate its possible use for kidney protection. MATERIALS AND METHODS The effect of THC on FK506-induced kidney cell damage was investigated in LLC-PK1 cells. LLC-PK1 cells were pretreated with THC at concentrations of dose for 2 hours followed by addition of FK506 for 24 hours. LLC-PK1 cells were treated with FK506 and THC, and cell viability and glutathione was measured. The number of apoptotic cells was measured using an annexin V/propidium iodide staining with flow cytometry. The effect of apoptosis by THC in LLC-PK1 cells was determined by measuring the caspase-9, caspase-3, B-cell lymphoma-2 (Bcl-2), and Bcl-2-associated X protein levels using Western blotting analyses. RESULTS FK506-induced LLC-PK1 renal cell damage was markedly ameliorated by THC treatment. THC protected LLC-PK1 cells by preventing FK506-induced glutathione decrease. THC protects against FK506-induced apoptosis in LLC-PK1 cells. Apoptosis was significantly decreased, and Bcl-2 was elevated in the THC-treated group. Bcl-2-associated X protein, caspase-3, and caspase-9 were decreased in the THC-treated group. CONCLUSION These results collectively provide therapeutic evidence that THC ameliorates the FK506-induced renal damage via antioxidant effect and apoptosis inhibition.
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Affiliation(s)
- C S Park
- Department of Surgery, Ulsan University, College of Medicine, Gangneung Asan Hospital, Gangneung, South Korea
| | - H J Jang
- Department of Surgery, Ulsan University, College of Medicine, Gangneung Asan Hospital, Gangneung, South Korea.
| | - J H Lee
- College of Korean Medicine, Gachon University, Seongnam, South Korea
| | - M Y Oh
- Department of Surgery, Ulsan University, College of Medicine, Gangneung Asan Hospital, Gangneung, South Korea
| | - H J Kim
- Department of Surgery, Ulsan University, College of Medicine, Gangneung Asan Hospital, Gangneung, South Korea
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Kim TK, Park CS, Jang J, Kim MR, Na HJ, Lee K, Kim HJ, Heo K, Yoo BC, Kim YM, Lee JW, Kim SJ, Kim ES, Kim DY, Cha K, Lee TG, Lee S. Inhibition of VEGF-dependent angiogenesis and tumor angiogenesis by an optimized antibody targeting CLEC14a. Mol Oncol 2018; 12:356-372. [PMID: 29316206 PMCID: PMC5830631 DOI: 10.1002/1878-0261.12169] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/01/2017] [Accepted: 12/03/2017] [Indexed: 12/12/2022] Open
Abstract
The C‐type lectin‐like domain of CLEC14a (CLEC14a‐C‐type lectin‐like domain [CTLD]) is a key domain that mediates endothelial cell–cell contacts in angiogenesis. However, the role of CLEC14a‐CTLD in pathological angiogenesis has not yet been clearly elucidated. In this study, through complementarity‐determining region grafting, consecutive deglycosylation, and functional isolation, we generated a novel anti‐angiogenic human monoclonal antibody that specifically targets CLEC14a‐CTLD and that shows improved stability and homogeneity relative to the parental antibody. We found that this antibody directly inhibits CLEC14a‐CTLD‐mediated endothelial cell–cell contact and simultaneously downregulates expression of CLEC14a on the surface of endothelial cells. Using various in vitro and in vivo functional assays, we demonstrated that this antibody effectively suppresses vascular endothelial growth factor (VEGF)‐dependent angiogenesis and tumor angiogenesis of SNU182 human hepatocellular carcinoma, CFPAC‐1 human pancreatic cancer, and U87 human glioma cells. Furthermore, we also found that this antibody significantly inhibits tumor angiogenesis of HCT116 and bevacizumab‐adapted HCT116 human colorectal cancer cells. These findings suggest that antibody targeting of CLEC14a‐CTLD has the potential to suppress VEGF‐dependent angiogenesis and tumor angiogenesis and that CLEC14a‐CTLD may be a novel anti‐angiogenic target for VEGF‐dependent angiogenesis and tumor angiogenesis.
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Affiliation(s)
- Taek-Keun Kim
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Chang Sik Park
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Jihye Jang
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Mi Ra Kim
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Hee-Jun Na
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Kangseung Lee
- Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Hyun Jung Kim
- Research Institute, National Cancer Center, Goyang, South Korea
| | - Kyun Heo
- Research Institute, National Cancer Center, Goyang, South Korea
| | - Byong Chul Yoo
- Research Institute, National Cancer Center, Goyang, South Korea
| | - Young-Myeong Kim
- Department of Molecular and Cellular Biochemistry, Kangwon National University, Chuncheon, South Korea
| | - Je-Wook Lee
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Su Jin Kim
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Eun Sung Kim
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Dae Young Kim
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Kiweon Cha
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Tae Gyu Lee
- New Drug Development Center, Osong Medical Innovation Foundation, South Korea
| | - Sukmook Lee
- Scripps Korea Antibody Institute, Chuncheon, South Korea
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Kang IG, Jeong WJ, Park CS, Ryu HS, Lee MJ, Park SS, Kim HJ. Hydrothorax Due to Extravasation of Intravenous Contrast after Power Injection through Right Subclavian Catheter. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We report a case of hydrothorax after receiving intravenous (IV) contrast material by power injector through right subclavian central venous catheter (CVC) line. A 38-year-old woman presented to the local emergency department with hypotension after a pedestrian accident. After resuscitation, CVC was inserted into her right subclavian vein and fluid was administered well before computed tomography (CT) enhancement. Contrast-enhanced CT scan showed a large amount of extravasation of contrast material and fluid collection in the thoracic and pericardial cavities which was not shown in non-enhanced CT scan. During operation, vascular perforation was found in right subclavian vein. This case highlights that emergency physicians must keep in mind the possibility of vessel injury after CVC insertion and contrast material is preferably injected via peripheral IV access.
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Park CS, Kang IG, Heo SJ, Chae YS, Kim HJ, Park SS, Lee MJ, Jeong WJ. A Randomised, Cross over Study Using a Mannequin Model to Evaluate the Effects on CPR Quality of Real-Time Audio-Visual Feedback Provided by a Smartphone Application. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791402100304] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective To evaluate the effect of real time feedback provided by smartphone application on cardiopulmonary resuscitation (CPR) performance. Methods Participants were randomised in two groups based on whether chest compression with or without the assistance of the smartphone application. Both groups performed hands-only CPR on a mannequin for 4 minutes. Data on CPR performance of both groups was compared. To assess the reliability the feedback value, we compared the CPR data from Skillmeter and data from smartphone. A questionnaire survey to participants about the usefulness of the application was also evaluated. Results Twenty-one subjects were recruited for the study. We found no significant difference in mean chest compression rate (103.3±5.0/min vs. 107.1±1.7/min; p=0.133) and depth between the two groups (47.3 [39.3, 56.2] mm vs. 45.8 [40.3, 49.9] mm; p=0.085). The proportion of adequate compression depth over the total compression was significantly higher in the group using the smartphone (38.1% vs. 22.2%; p=0.034). The CPR data displayed on smartphone application in mannequin's chest was not different from Skillmeter software. The majority of the participants considered the application easy to use, but holding the smartphone during CPR hampered compression. Conclusions Real-time audio-visual feedback on CPR depth and rate using a smartphone application can help to maintain the adequate chest compression depth in prolonged CPR. A better method to hold the smartphone may maximise the feedback effect on CPR quality. (Hong Kong j.emerg.med. 2014;21:153-160)
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Affiliation(s)
- CS Park
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - IG Kang
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - SJ Heo
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - YS Chae
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - HJ Kim
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - SS Park
- Konyang University Hospital, Department of Emergency Medicine, Republic of Korea
| | - MJ Lee
- Kyungpook National University Hospital, Department of Emergency Medicine, Republic of Korea
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Kim SH, Han SH, Song Y, Park CS, Song JJ. Arteriovenous malformation of the external ear: a clinical assessment with a scoping review of the literature. Braz J Otorhinolaryngol 2017; 83:683-690. [PMID: 28277225 PMCID: PMC9449233 DOI: 10.1016/j.bjorl.2016.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/17/2016] [Accepted: 09/20/2016] [Indexed: 11/17/2022] Open
Abstract
Introduction Auricular Arteriovenous Malformation of the external ear is a rarely encountered disease; in particular, arteriovenous malformation arising from the auricle, with spontaneous bleeding, has seldom been reported. Objective In the current study, we report an unusual case of late-onset auricular arteriovenous malformation originating from the posterior auricular artery that was confirmed by computed tomographic angiography. The case was successfully managed by pre-surgical intravascular embolization followed by total lesion excision. Prompted by this case, we also present a scoping review of the literature. Methods A case of a 60 year-old man with right auricular arteriovenous malformation treated in our tertiary care center, and 52 patients with auricular arteriovenous malformation described in 10 case reports and a retrospective review are presented. Auricular arteriovenous malformation can manifest as swelling of the ear, pulsatile tinnitus, pain, and/or bleeding. On physical examination, a pulsatile swelling and/or a tender mass is evident. When arteriovenous malformation is suspected, the lesions should be visualized using imaging modalities that optimally detect vascular lesions, and managed via embolization, mass excision, or auricular resection. Effectiveness of the various diagnostic methods used and the treatment outcomes were analyzed. Results Various imaging modalities including Doppler sonography, computed tomographic angiography, magnetic resonance angiography, and/or transfemoral cerebral angiography were used to diagnose 38 cases reported in the literature. In another 15 cases, no imaging was performed; treatment was determined solely by physical examination and auscultation. Of the total of 53 cases, 12 were not treated (their symptoms were merely observed) whereas 20 underwent therapeutic embolization. In total, 32 patients, including 1 patient who was not treated and 10 with persistent or aggravated arteriovenous malformation after previous embolization, underwent mass excision or auricular resection depending on the extent of the lesion. No major postoperative complication was recorded. The postoperative follow-up duration varied from 1 month to 19 years, and only one case of unresectable, residual cervicofacial arteriovenous malformation was recorded. Conclusion Auricular arteriovenous malformation is a rarely encountered disease, but should be suspected if a patient presents with a swollen ear and pulsatile tinnitus. Appropriate imaging is essential for diagnosis and evaluation of the extent of disease. As embolization affords only relatively poor control, total surgical removal of the vascular mass is recommended.
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Affiliation(s)
- Shin Hye Kim
- Korea University Medical Center, Korea University College of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Seoul, Republic of Korea; Seoul National University Bundang Hospital, Seoul National University College of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Seongnam, Republic of Korea
| | - Seung Hoon Han
- Seoul National University Bundang Hospital, Seoul National University College of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Seongnam, Republic of Korea
| | - Yoonjae Song
- Seoul National University Bundang Hospital, Seoul National University College of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Seongnam, Republic of Korea
| | - Chang Sik Park
- Seoul National University Bundang Hospital, Seoul National University College of Medicine, Department of Plastic Surgery, Seongnam, Republic of Korea
| | - Jae-Jin Song
- Seoul National University Bundang Hospital, Seoul National University College of Medicine, Department of Otorhinolaryngology-Head and Neck Surgery, Seongnam, Republic of Korea.
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Park CS, Helmbrecht A, Htoo JK, Adeola O. Comparison of amino acid digestibility in full-fat soybean, two soybean meals, and peanut flour between broiler chickens and growing pigs. J Anim Sci 2017; 95:3110-3119. [PMID: 28727082 DOI: 10.2527/jas.2017.1404] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to determine the apparent ileal digestibility (AID) and the standardized ileal digestibility (SID) of CP and AA in full-fat soybean (FFSB), solvent-extracted soybean meal containing 430 g/kg CP (SBM-43), solvent-extracted soybean meal containing 470 g/kg CP (SBM-47), and peanut flour (PNF) fed to broiler chickens and pigs and to compare the digestibility of CP and AA between broiler chickens and pigs. Four diets were prepared to contain FFSB, SBM-43, SBM-47, and PNF as the sole source of N. A N-free diet was formulated to estimate the basal ileal endogenous losses of CP and AA for broiler chickens and pigs. In Exp. 1, a total of four hundred sixteen 21-d-old male broiler chickens (922.1 ± 79.9 g initial BW) were assigned to 5 experimental diets in a randomized complete block design with BW as a blocking factor. After 5 d of adaptation, ileal digesta samples were collected after birds were euthanized by CO asphyxiation. In Exp. 2, twenty barrows (62.0 ± 6.9 kg initial BW) surgically fitted with T-cannulas at the distal ileum were allotted to 5 experimental diets with 2 consecutive 7-d experimental periods. After 5 d of adaptation, ileal digesta samples were collected at d 6 and 7. For statistical analysis, treatments were considered a 2 × 4 factorial arrangement with effects of species and experimental diets (Exp. 1 vs. Exp. 2). There were no interactions between species and diets for the digestibility of CP and AA except for Cys ( < 0.01). The AID of CP and indispensable AA in pigs were greater ( < 0.01) than in broiler chickens. In both broiler chickens and pigs, the AID of CP and indispensable AA in SBM-47 were greater ( < 0.05) than in FFSB, and the AID of Lys in PNF was the least ( < 0.05) among ingredients. The SID of CP and indispensable AA in pigs were greater ( < 0.05) than in broiler chickens except for Trp. In both broiler chickens and pigs, the SID of Lys in PNF was the least ( < 0.05) among ingredients. In broiler chickens, the SID of CP, Ile, Leu, Thr, Trp, and Val in FFSB were less ( < 0.05) than that in SBM-43, SBM-47, and PNF. In pigs, the SID of Arg, Ile, Leu, Met, Phe, and Val in FFSB were less ( < 0.05) than in SBM-43, SBM-47, and PNF. In conclusion, the digestibility of CP and most AA were less in broiler chickens than in pigs, but the pattern of differences in the AA digestibility among ingredients was similar between broiler chickens and pigs.
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21
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Jeong Y, Jantz LM, Park CS. Generating equations to estimate body mass of Korean skeletal remains. Anthropol Anz 2017; 74:213-219. [PMID: 28555246 DOI: 10.1127/anthranz/2017/0697] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 04/24/2017] [Accepted: 04/26/2017] [Indexed: 11/05/2022]
Abstract
ABSTRACT This study aims to generate Korean specific standards for body mass estimation and compare their performance to previous techniques derived from non-Korean samples. Due to a lack of known reference samples in Korea, estimation equations were generated using the hybrid method on 106 Korean unknown skeletons. In the first phase of the hybrid method (morphometric method), a downward adjustment of 4.5 kg was necessary to compensate for a systematic overestimation associated with the morphometric method being applied to Asian samples. Estimates using the adjusted morphometric method were regarded as actual body mass. New body mass equations revealed a better performance in accuracy and precision than previous techniques. However, caution is required in their forensic application because they yield an estimate for body mass around onset of adulthood, rather than the body mass at the time of death.
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Affiliation(s)
- Y Jeong
- Defense POW/MIA Accounting Agency-Laboratory, 106 Peacekeeper Drive, Offutt AFB, NE 68113, USA
| | - L M Jantz
- Department of Anthropology, University of Tennessee, 250 South Stadium Hall, Knoxville, TN 37996, USA
| | - C S Park
- Department of Police Administration, Catholic Kwandong University, 579-24 Bumil-ro, Gangneung-si, South Korea
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22
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Kim MR, Jang JH, Park CS, Kim TK, Kim YJ, Chung J, Shim H, Nam IH, Han JM, Lee S. A Human Antibody That Binds to the Sixth Ig-Like Domain of VCAM-1 Blocks Lung Cancer Cell Migration In Vitro. Int J Mol Sci 2017; 18:ijms18030566. [PMID: 28272300 PMCID: PMC5372582 DOI: 10.3390/ijms18030566] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/27/2017] [Accepted: 03/03/2017] [Indexed: 01/09/2023] Open
Abstract
Vascular cell adhesion molecule-1 (VCAM-1) is closely associated with tumor progression and metastasis. However, the relevance and role of VCAM-1 in lung cancer have not been clearly elucidated. In this study, we found that VCAM-1 was highly overexpressed in lung cancer tissue compared with that of normal lung tissue, and high VCAM-1 expression correlated with poor survival in lung cancer patients. VCAM-1 knockdown reduced migration of A549 human lung cancer cells into Matrigel, and competitive blocking experiments targeting the Ig-like domain 6 of VCAM-1 (VCAM-1-D6) demonstrated that the VCAM-1-D6 domain was critical for VCAM-1 mediated A549 cell migration into Matrigel. Next, we developed a human monoclonal antibody specific to human and mouse VCAM-1-D6 (VCAM-1-D6 huMab), which was isolated from a human synthetic antibody library using phage display technology. Finally, we showed that VCAM-1-D6 huMab had a nanomolar affinity for VCAM-1-D6 and that it potently suppressed the migration of A549 and NCI-H1299 lung cancer cell lines into Matrigel. Taken together, these results suggest that VCAM-1-D6 is a key domain for regulating VCAM-1-mediated lung cancer invasion and that our newly developed VCAM-1-D6 huMab will be a useful tool for inhibiting VCAM-1-expressing lung cancer cell invasion.
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Affiliation(s)
- Mi Ra Kim
- Research Center, Scripps Korea Antibody Institute, Chuncheon 24341, Korea.
| | - Ji Hye Jang
- Research Center, Scripps Korea Antibody Institute, Chuncheon 24341, Korea.
| | - Chang Sik Park
- Research Center, Scripps Korea Antibody Institute, Chuncheon 24341, Korea.
| | - Taek-Keun Kim
- Research Center, Scripps Korea Antibody Institute, Chuncheon 24341, Korea.
| | - Youn-Jae Kim
- Specific Organs Cancer Branch, Research Institute, National Cancer Center, Goyang 10408, Korea.
| | - Junho Chung
- Department of Biochemistry and Molecular Biology, Seoul National University, Seoul 03087, Korea.
| | - Hyunbo Shim
- Departments of Bioinspired Science and Life Science, Ewha Womans University, Seoul 03760, Korea.
| | - In Hyun Nam
- Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Korea.
| | - Jung Min Han
- Department of Integrated OMICS for Biomedical Science, College of Pharmacy, Yonsei University, Incheon 21983, Korea.
| | - Sukmook Lee
- Research Center, Scripps Korea Antibody Institute, Chuncheon 24341, Korea.
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23
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Park KS, Cho KB, Hwang IS, Park JH, Jang BI, Kim KO, Jeon SW, Kim ES, Park CS, Kwon JG. Characterization of smooth muscle, enteric nerve, interstitial cells of Cajal, and fibroblast-like cells in the gastric musculature of patients with diabetes mellitus. World J Gastroenterol 2016; 22:10131-10139. [PMID: 28028361 PMCID: PMC5155172 DOI: 10.3748/wjg.v22.i46.10131] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 10/01/2016] [Accepted: 10/31/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate histologic abnormalities in the gastric smooth muscle of patients with diabetes mellitus (DM).
METHODS Full-thickness gastric specimens were obtained from patients undergoing surgery for gastric cancer. H&E stain and Masson’s Trichrome stain were performed to assess the degree of fibrosis. Immunohistochemical staining using various antibodies was also performed [antibodies against protein gene product 9.5 (PGP9.5), neuronal nitric oxide synthase (nNOS), vasoactive intestinal peptide (VIP), neurokinin-1 (NK1) receptor, c-Kit, and platelet-derived growth factor receptor-alpha, (PDGFRα)]. Immunofluorescent staining and evaluation with confocal microscopy were also conducted.
RESULTS Twenty-six controls and 35 diabetic patients (21 short-duration patients and 14 long-duration patients) were included. There were no significant differences in basic demographics between the two groups except in mean body mass index (BMI) (higher in the DM group). Proportions of moderate-to-severe intercellular fibrosis in the muscle layer were significantly higher in the DM group than in the control group (P < 0.01). On immunohistochemical staining, c-Kit- and PDGFRα-positive immunoreactivity were significantly decreased in the DM group compared with the control group (P < 0.05). There were no statistically significant differences in PGP9.5, nNOS, VIP, and neurokinin 1 expression. On immunofluorescent staining, cellularity of interstitial cells of Cajal (ICC) was observed to decrease with increasing duration of DM.
CONCLUSION Our study suggests that increased intercellular fibrosis, loss of ICC, and loss of fibroblast-like cells are found in the smooth muscle of DM patients. These abnormalities may contribute to changes in gastric motor activity in patients with DM.
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24
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Shen Y, Park CS, Suppipat K, Mistretta TA, Puppi M, Horton TM, Rabin K, Gray NS, Meijerink JPP, Lacorazza HD. Inactivation of KLF4 promotes T-cell acute lymphoblastic leukemia and activates the MAP2K7 pathway. Leukemia 2016; 31:1314-1324. [PMID: 27872496 DOI: 10.1038/leu.2016.339] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 10/14/2016] [Accepted: 10/21/2016] [Indexed: 02/06/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematological malignancy with a high incidence of relapse in pediatric ALL. Although most T-ALL patients exhibit activating mutations in NOTCH1, the cooperating genetic events required to accelerate the onset of leukemia and worsen disease progression are largely unknown. Here, we show that the gene encoding the transcription factor KLF4 is inactivated by DNA methylation in children with T-ALL. In mice, loss of KLF4 accelerated the development of NOTCH1-induced T-ALL by enhancing the G1-to-S transition in leukemic cells and promoting the expansion of leukemia-initiating cells. Mechanistically, KLF4 represses the gene encoding the kinase MAP2K7. Our results showed that in murine and pediatric T-ALL, loss of KLF4 leads to aberrant activation of MAP2K7 and of the downstream effectors JNK and ATF2. As a proof-of-concept for the development of a targeted therapy, administration of JNK inhibitors reduced the expansion of leukemia cells in cell-based and patient-derived xenograft models. Collectively, these data uncover a novel function for KLF4 in regulating the MAP2K7 pathway in T-ALL cells, which can be targeted to eradicate leukemia-initiating cells in T-ALL patients.
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Affiliation(s)
- Y Shen
- Department of Pathology &Immunology, Baylor College of Medicine, Houston, TX, USA
| | - C S Park
- Department of Pathology &Immunology, Baylor College of Medicine, Houston, TX, USA
| | - K Suppipat
- Texas Children's Cancer and Hematology Center, Houston, TX, USA
| | - T-A Mistretta
- Department of Pathology &Immunology, Baylor College of Medicine, Houston, TX, USA
| | - M Puppi
- Department of Pathology &Immunology, Baylor College of Medicine, Houston, TX, USA
| | - T M Horton
- Texas Children's Cancer and Hematology Center, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - K Rabin
- Texas Children's Cancer and Hematology Center, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - N S Gray
- Department of Cancer Biology, Dana Farber Cancer Institute, Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - J P P Meijerink
- Department of Pediatric Oncology/Hematology, Erasmus Medical Center/Sophia Children's Hospital, Rotterdam and the Princess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - H D Lacorazza
- Department of Pathology &Immunology, Baylor College of Medicine, Houston, TX, USA.,Department of Pediatrics, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
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25
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Park KA, Oh YJ, Kim KM, Eum SY, Cho MH, Son YH, Park SH, Woo KM, Lee YS, Kim S, Chang HS, Park CS. Navigation programs, are they helpful for perioperative care with thyroid cancer patients? Eur J Cancer Care (Engl) 2016; 26. [PMID: 27726224 DOI: 10.1111/ecc.12592] [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] [Subscribe] [Scholar Register] [Accepted: 08/30/2016] [Indexed: 12/23/2022]
Abstract
The purpose of this study was to develop and evaluate a navigation program for patients with thyroid cancer. The navigation program was developed following an analysis of the unmet needs of patients who underwent surgery for thyroid cancer. Ninety-nine patients in the control group received usual care, and 95 in the navigation group were managed with a navigation program during the perioperative period. The effectiveness of the navigation program was assessed by administering a questionnaire to both groups. Overall satisfaction scores were significantly higher in the navigation than in the control group (p = .025), as were satisfaction scores on the continuity of information (p < .001), the continuity of management (p = .002), the continuity of relationships with healthcare providers (p<.001), and patient empowerment (p < .001). The newly developed navigation program for patients with thyroid cancer was effective in raising satisfaction levels and in actively managing the disease during the perioperative period.
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Affiliation(s)
- K A Park
- Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea.,Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Y J Oh
- Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea.,Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - K M Kim
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - S Y Eum
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - M H Cho
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Y H Son
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - S H Park
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - K M Woo
- Division of Nursing, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - Y S Lee
- Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - S Kim
- Department of Clinical Nursing Science & Mo Im Kim Nursing Research Institute, Yonsei University College of Nursing, Seoul, Korea
| | - H-S Chang
- Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
| | - C S Park
- Thyroid Cancer Center, Gangnam Severance Hospital, Yonsei University Health System, Seoul, Korea
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26
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Park CS, An SH. Reliability and validity of the modified functional ambulation category scale in patients with hemiparalysis. J Phys Ther Sci 2016; 28:2264-7. [PMID: 27630410 PMCID: PMC5011574 DOI: 10.1589/jpts.28.2264] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 05/07/2016] [Indexed: 11/24/2022] Open
Abstract
[Purpose] This study aimed to examine the inter- and intra-rater reliability and validity
of the modified functional ambulation category (mFAC) scale. [Subjects and Methods] The
participants were 66 stroke patients with hemiparalysis. The inter- and intra-rater
validity of the mFAC was calculated using the Spearman correlation coefficient. A score
comparison of the stable or maximum gait speed with regard to mFAC and modified Rivermead
Mobility Index (mRMI) performances was performed as a univariate linear regression
analysis to determine how the Kruskal-Wallis test affects the mRMI and stable/maximum gait
speed with regard to mFAC. [Results] The inter-rater reliability of the mFAC (intraclass
coefficient [ICC]) was 0.982 (0.971–0.989), with a kappa coefficient of 0.923 and a
consistency ratio of 94%. In contrast, the intra-rater reliability of the mFAC (ICC) was
0.991 (0.986–0.995), with a kappa coefficient of 0.961 and a consistency ratio of 96%,
showing higher reliability. Moreover, there was a significant difference in stable/maximum
gait speed between the mFAC and the mRMI. [Conclusion] Since the mFAC has sufficient
inter- and intra-reliability and high validity, it can be used as an assessment tool that
reflects the gait performance and mobility of stroke patients.
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Affiliation(s)
- Chang Sik Park
- Department of Occupational Therapy, Howon University, Republic of Korea
| | - Seung Heon An
- Department of Physical Therapy, National Rehabilitation Center, Republic of Korea
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27
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Park CS, Kim BG. In vitro Solubility of Copper(II) Sulfate and Dicopper Chloride Trihydroxide for Pigs. Asian-Australas J Anim Sci 2016; 29:1608-1615. [PMID: 27456425 PMCID: PMC5088381 DOI: 10.5713/ajas.16.0189] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 03/29/2016] [Accepted: 07/01/2016] [Indexed: 11/27/2022]
Abstract
This study was conducted to determine the solubility of copper (Cu) in two sources of copper(II) sulfate (CuSO4) including monohydrate and pentahydrate and three sources of dicopper chloride trihydroxide (dCCTH) including α-form (dCCTH-α), β-form (dCCTH-β), and a mixture of α- and β-form (dCCTH-αβ) at different pH and a 3-step in vitro digestion assay for pigs. In Exp. 1, Cu sources were incubated in water-based buffers at pH 2.0, 3.0, 4.8, and 6.8 for 4 h using a shaking incubator at 39°C. The CuSO4 sources were completely dissolved within 15 min except at pH 6.8. The solubility of Cu in dCCTH-α was greater (p<0.05) than dCCTH-β but was not different from dCCTH-αβ during 3-h incubation at pH 2.0 and during 2-h incubation at pH 3.0. At pH 4.8, there were no significant differences in solubility of Cu in dCCTH sources. Copper in dCCTH sources were non-soluble at pH 6.8. In Exp. 2, the solubility of Cu was determined during the 3-step in vitro digestion assay for pigs. All sources of Cu were completely dissolved in step 1 which simulated digestion in the stomach. In Exp. 3, the solubility of Cu in experimental diets including a control diet and diets containing 250 mg/kg of additional Cu from five Cu sources was determined during the in vitro digestion assay. The solubility of Cu in diets containing additional Cu sources were greater (p<0.05) than the control diet in step 1. In conclusion, the solubility of Cu was influenced by pH of digesta but was not different among sources based on the in vitro digestion assay.
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Affiliation(s)
- C S Park
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea
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28
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Rani S, Park CS, Sreenivasaiah PK, Kim DH. Characterization of Ca(2+)-Dependent Protein-Protein Interactions within the Ca(2+) Release Units of Cardiac Sarcoplasmic Reticulum. Mol Cells 2016; 39:149-55. [PMID: 26674963 PMCID: PMC4757803 DOI: 10.14348/molcells.2016.2284] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 11/02/2015] [Accepted: 11/03/2015] [Indexed: 02/04/2023] Open
Abstract
In the heart, excitation-contraction (E-C) coupling is mediated by Ca(2+) release from sarcoplasmic reticulum (SR) through the interactions of proteins forming the Ca(2+) release unit (CRU). Among them, calsequestrin (CSQ) and histidine-rich Ca(2+) binding protein (HRC) are known to bind the charged luminal region of triadin (TRN) and thus directly or indirectly regulate ryanodine receptor 2 (RyR2) activity. However, the mechanisms of CSQ and HRC mediated regulation of RyR2 activity through TRN have remained unclear. We first examined the minimal KEKE motif of TRN involved in the interactions with CSQ2, HRC and RyR2 using TRN deletion mutants and in vitro binding assays. The results showed that CSQ2, HRC and RyR2 share the same KEKE motif region on the distal part of TRN (aa 202-231). Second, in vitro binding assays were conducted to examine the Ca(2+) dependence of protein-protein interactions (PPI). The results showed that TRN-HRC interaction had a bell-shaped Ca(2+) dependence, which peaked at pCa4, whereas TRN-CSQ2 or TRN-RyR2 interaction did not show such Ca(2+) dependence pattern. Third, competitive binding was conducted to examine whether CSQ2, HRC, or RyR2 affects the TRN-HRC or TRN-CSQ2 binding at pCa4. Among them, only CSQ2 or RyR2 competitively inhibited TRN-HRC binding, suggesting that HRC can confer functional refractoriness to CRU, which could be beneficial for reloading of Ca(2+) into SR at intermediate Ca(2+) concentrations.
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Affiliation(s)
- Shilpa Rani
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology, Gwangju 500-712,
Korea
| | - Chang Sik Park
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology, Gwangju 500-712,
Korea
| | - Pradeep Kumar Sreenivasaiah
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology, Gwangju 500-712,
Korea
| | - Do Han Kim
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology, Gwangju 500-712,
Korea
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29
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Park CS, Kim TK, Kim HG, Kim YJ, Jeoung MH, Lee WR, Go NK, Heo K, Lee S. Therapeutic targeting of tetraspanin8 in epithelial ovarian cancer invasion and metastasis. Oncogene 2016; 35:4540-8. [PMID: 26804173 DOI: 10.1038/onc.2015.520] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/27/2015] [Accepted: 11/12/2015] [Indexed: 11/09/2022]
Abstract
Epithelial ovarian cancer (EOC) invasion and metastasis are complex phenomena that result from the coordinated action of many metastatic regulators and must be overcome to improve clinical outcomes for patients with these cancers. The identification of novel therapeutic targets is critical because of the limited success of current treatment regimens, particularly in advanced-stage ovarian cancers. In this study, we found that tetraspanin 8 (TSPAN8) is overexpressed in about 52% (14/27) of EOC tissues and correlates with poor survival. Using small interfering RNA-mediated TSPAN8 knockdown and a competition assay with purified TSPAN8 large extracellular loop (TSPAN8-LEL) protein, we identified TSPAN8-LEL as a key regulator of EOC cell invasion. Furthermore, monotherapy with TSPAN8-blocking antibody we developed shows that antibody-based modulation of TSPAN8-LEL can significantly reduce the incidence of EOC metastasis without severe toxicity in vivo. Finally, we demonstrated that the TSPAN8-blocking antibody promotes the internalization and concomitant downregulation of cell surface TSPAN8. Collectively, our data suggest TSPAN8 as a potential novel therapeutic target in EOCs and antibody targeting of TSPAN8 as an effective strategy for inhibiting invasion and metastasis of TSPAN8-expressing EOCs.
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Affiliation(s)
- C S Park
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
| | - T-K Kim
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
| | - H G Kim
- New Experimental Therapeutics Branch, Research Institute, National Cancer Center, Goyang-si, Korea
| | - Y-J Kim
- Specific Organs Cancer Branch, Research Institute, National Cancer Center, Goyang-si, Korea
| | - M H Jeoung
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
| | - W R Lee
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
| | - N K Go
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
| | - K Heo
- New Experimental Therapeutics Branch, Research Institute, National Cancer Center, Goyang-si, Korea
| | - S Lee
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute,, Chuncheon-si, Korea
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30
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Kim TK, Park CS, Jeoung MH, Lee WR, Go NK, Choi JR, Lee TS, Shim H, Lee S. Generation of a human antibody that inhibits TSPAN8-mediated invasion of metastatic colorectal cancer cells. Biochem Biophys Res Commun 2015; 468:774-80. [PMID: 26562525 DOI: 10.1016/j.bbrc.2015.11.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 11/02/2015] [Accepted: 11/05/2015] [Indexed: 12/14/2022]
Abstract
Tetraspanin 8 (TSPAN8) is a tumor-associated antigen implicated in tumor progression and metastasis. However, the validation of TSPAN8 as a potential therapeutic target in metastatic colorectal cancer (mCRC) has not yet been studied. In this study, through several in vitro methodologies, we identified a large extracellular loop of TSPAN8 (TSPAN8-LEL) as a key domain for regulating mCRC invasion. Using phage display technology, we developed a novel anti-TSPAN8-LEL human antibody with subnanomolar affinity that specifically recognizes amino acids 140-205 of TSPAN8-LEL in a conformation-dependent manner. Finally, we demonstrated that the antibody specifically reduces invasion in the HCT116 and LoVo mCRC cell lines more potently than in the HCT-8 and SW480 non-mCRC cell lines. Our data suggest that TSPAN8-LEL may play an important role in mCRC cell invasion, and that the antibody we have developed could be a useful tool for inhibiting the invasion of TSPAN8-expressing mCRCs.
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Affiliation(s)
- Taek-Keun Kim
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Chang Sik Park
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Mee Hyun Jeoung
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Woo Ran Lee
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Nam Kyung Go
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Jong Rip Choi
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea
| | - Tae Sup Lee
- Molecular Imaging Research Center, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Hyunbo Shim
- Departments of Bioinspired Science and Life Science, Ewha Womans University, Seoul, South Korea
| | - Sukmook Lee
- Laboratory of Molecular Cancer Therapeutics, Scripps Korea Antibody Institute, Chuncheon, South Korea.
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Chung HS, Lee S, Kwon SJ, Park CS. Perioperative predictors for refractory hyperglycemia during the neohepatic phase of liver transplantation. Transplant Proc 2015; 46:3474-80. [PMID: 25498075 DOI: 10.1016/j.transproceed.2014.06.078] [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: 01/03/2014] [Accepted: 06/17/2014] [Indexed: 01/15/2023]
Abstract
BACKGROUND Hyperglycemia in the neohepatic phase of liver transplantation (LT) tends to decrease toward completion of the surgical procedure. Refractory hyperglycemia in the neohepatic phase (RH) is influenced by multiple perioperative factors and may be connected to posttransplant outcomes. We attempted to demonstrate the relationship of RH to posttransplant outcomes and to establish a predictive model for RH in living donor liver transplantation (LDLT). METHODS Perioperative data of 211 patients who underwent LDLT from 2009 and 2012 were reviewed, including declines in the blood glucose levels during the neohepatic phase. Perioperative variables including the posttransplant model for end-stage liver disease (MELD) score until day 30 were compared between patients with normal declines in blood glucose and patients with RH. Selected variables after intergroup comparisons were examined by means of multivariate logistic regression to establish a predictive model for RH occurrence. RESULTS The mean blood glucose decline was 22.3 ± 31.5 mg/dL during the neohepatic phase, and 84 of 203 patients (41.4%) had no decline in blood glucose. In intergroup comparisons, preoperative factors associated with RH included sex, Child-Pugh-Turcotte class, MELD score, emergency, liver enzymes, and graft-to-recipient weight ratio. During surgery, surgical time, serum lactate, and arterial pH were associated with RH. After surgery, the RH group showed slower recovery of the MELD score (15.2 versus 11.9 days) and higher MELD scores until day 10 (P < .05). After the multivariate analysis, recipient sex, emergency, surgical time (≤9 h), and the final intraoperative serum lactate level (≥5.0 mmol/L) were included in the predictive model for RH. CONCLUSIONS RH was associated with delayed functional recovery of the liver graft in LT. Recipient sex, emergency, surgical time, and the final intraoperative serum lactate level were identified as predictors of RH. Close monitoring of intraoperative blood glucose in LDLT may be an early prognostic indicator.
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Affiliation(s)
- H S Chung
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Lee
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S J Kwon
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - C S Park
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Kong C, Shin SY, Park CS, Kim BG. Effects of Feeding Barley Naturally Contaminated with Fusarium Mycotoxins on Growth Performance, Nutrient Digestibility, and Blood Chemistry of Gilts and Growth Recoveries by Feeding a Non-contaminated Diet. Asian-Australas J Anim Sci 2015; 28:662-70. [PMID: 25715687 PMCID: PMC4412996 DOI: 10.5713/ajas.14.0707] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 10/08/2014] [Accepted: 12/03/2014] [Indexed: 11/27/2022]
Abstract
The objectives of this study were to investigate the effects of feeding barley naturally contaminated with Fusarium mycotoxins on growth performance, vulva swelling, and digestibility of dry matter, organic matter, and crude protein of gilts and the recovery of gilts fed normal diets immediately after the exposure to contaminated diets by measuring growth performance and vulva swelling. In Exp. 1, four diets were prepared to contain 0%, 15%, 30%, or 45% contaminated barley containing 25.7 mg/kg deoxynivalenol and 26.0 μg/kg zearalenone. Sixteen gilts with an initial body weight (BW) of 33.3 kg (standard deviation = 3.0) were individually housed in a metabolism crate and assigned to 4 diets with 4 replicates in a randomized complete block design based on BW. During the 14-d feeding trial, individual BW and feed consumption were measured weekly and the vertical and horizontal lengths of vulva were measured every 3 d. From d 10, feces were collected by the maker-to-marker method for 4 d. Blood samples were collected on d 14. During the overall period, the average daily gain, average daily feed intake, and gain:feed of pigs linearly decreased (p<0.01) as the dietary concentration of contaminated barley increased. However, the digestibility of crude protein was linearly increased (p = 0.011) with the increasing amounts of contaminated barley. Increasing dietary Fusarium mycotoxin concentrations did not influence vulva size, blood characteristic as well as immunoglobulin level of pigs. In the Exp. 2, a corn-soybean meal-based diet was formulated as a recovery diet. Pigs were fed the recovery diet immediately after completion of the Exp. 1. During the 14-d of recovery period, the individual BW and feed consumption were measured weekly and the vertical and horizontal length of vulva were measured every 3 d from d 0. On d 7, the feed intake of pigs previously fed contaminated diets already reached that of pigs fed a diet with 0% contaminated barley and no significant difference in growth performance among treatments was observed during d 7 to 14 of the recovery period. In conclusion, increasing levels of mycotoxins in diets linearly decreased the growth performance of pigs, and these damages can be recovered in 7 d after the diet was replaced with a normal diet. The vulva size, blood characteristic, immune responses were not affected by increasing level of contaminated barley in the diets fed to pigs.
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Affiliation(s)
- C Kong
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - S Y Shin
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - C S Park
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
| | - B G Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 143-701, Korea
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Chang HS, Shin SW, Lee TH, Bae DJ, Park JS, Kim YH, Uh ST, Choi BW, Kim MK, Choi IS, Park BL, Shin HD, Park CS. Development of a genetic marker set to diagnose aspirin-exacerbated respiratory disease in a genome-wide association study. Pharmacogenomics J 2015; 15:316-21. [PMID: 25707394 DOI: 10.1038/tpj.2014.78] [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] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 09/28/2014] [Accepted: 11/05/2014] [Indexed: 12/27/2022]
Abstract
We developed a genetic marker set of single nucleotide polymorphisms (SNPs) by summing risk scores of 14 SNPs showing a significant association with aspirin-exacerbated respiratory disease (AERD) from our previous 660 W genome-wide association data. The summed scores were higher in the AERD than in the aspirin-tolerant asthma (ATA) group (P=8.58 × 10(-37)), and were correlated with the percent decrease in forced expiratory volume in 1 s after aspirin challenge (r(2)=0.150, P=5.84 × 10(-30)). The area under the curve of the scores for AERD in the receiver operating characteristic curve was 0.821. The best cutoff value of the summed risk scores was 1.01328 (P=1.38 × 10(-32)). The sensitivity and specificity of the best scores were 64.7% and 85.0%, respectively, with 42.1% positive and 93.4% negative predictive values. The summed risk score may be used as a genetic marker with good discriminative power for distinguishing AERD from ATA.
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Affiliation(s)
- H S Chang
- Department of Medical Bioscience, Graduate School, Soonchunhyang University, Asan, Republic of Korea
| | - S W Shin
- Asthma Genome Research Center, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - T H Lee
- Department of Medical Bioscience, Graduate School, Soonchunhyang University, Asan, Republic of Korea
| | - D J Bae
- Department of Medical Bioscience, Graduate School, Soonchunhyang University, Asan, Republic of Korea
| | - J S Park
- 1] Asthma Genome Research Center, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea [2] Division of Allergy and Respiratory Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Y H Kim
- Division of Allergy and Respiratory Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
| | - S T Uh
- Division of Allergy and Respiratory Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - B W Choi
- Department of Internal Medicine, Chung-Ang University Yongsan Hospital, Seoul, Republic of Korea
| | - M K Kim
- Division of Internal Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - I S Choi
- Department of Allergy, Chonnam National University, Gwangju, Republic of Korea
| | - B L Park
- Department of Genetic Epidemiology, SNP Genetics Incorporation, Seoul, Republic of Korea
| | - H D Shin
- 1] Department of Genetic Epidemiology, SNP Genetics Incorporation, Seoul, Republic of Korea [2] Department of Life Science, Sogang University, Seoul, Republic of Korea
| | - C S Park
- 1] Asthma Genome Research Center, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea [2] Division of Allergy and Respiratory Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
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Lee KJ, Hyun C, Woo JS, Park CS, Kim DH, Lee EH. Stromal interaction molecule 1 (STIM1) regulates sarcoplasmic/endoplasmic reticulum Ca²⁺-ATPase 1a (SERCA1a) in skeletal muscle. Pflugers Arch 2014; 466:987-1001. [PMID: 24077737 DOI: 10.1007/s00424-013-1361-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 09/11/2013] [Indexed: 12/31/2022]
Abstract
Stromal interaction molecule 1 (STIM1) mediates Ca2+ movements from the extracellular space to the cytosol through a store-operated Ca2+ entry (SOCE) mechanism in various cells including skeletal muscle cells. In the present study, to reveal the unidentified functional role of the STIM1 C terminus from 449 to 671 amino acids in skeletal muscle, binding assays and quadrupole time-of-flight mass spectrometry were used to identify proteins binding in this region along with proteins that mediate skeletal muscle contraction and relaxation. STIM1 binds to sarcoplasmic/endoplasmic reticulum Ca2+-ATPase 1a (SERCA1a) via this region (called STIM1-SBR). The binding was confirmed in endogenous full-length STIM1 in rabbit skeletal muscle and mouse primary skeletal myotubes via co-immunoprecipitation assay and immunocytochemistry. STIM1 knockdown in mouse primary skeletal myotubes decreased Ca2+ uptake from the cytosol to the sarcoplasmic reticulum (SR) through SERCA1a only at micromolar cytosolic Ca2+ concentrations, suggesting that STIM1 could be required for the full activity of SERCA1a possibly during the relaxation of skeletal muscle. Various Ca2+ imaging experiments using myotubes expressing STIM1-SBR suggest that STIM1 is involved in intracellular Ca2+ distributions between the SR and the cytosol via regulating SERCA1a activity without affecting SOCE. Therefore, in skeletal muscle, STIM1 could play an important role in regulating Ca2+ movements between the SR and the cytosol.
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Park JH, Yoon DH, Kim DY, Kim S, Seo S, Jeong Y, Lee SW, Park CS, Huh J, Suh C. The highest prognostic impact of LDH among International Prognostic Indices (IPIs): an explorative study of five IPI factors among patients with DLBCL in the era of rituximab. Ann Hematol 2014; 93:1755-64. [PMID: 25027115 DOI: 10.1007/s00277-014-2115-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 05/15/2014] [Indexed: 12/22/2022]
Abstract
Although the International Prognostic Index (IPI) is considered as the current standard prognostication system for diffuse large B-cell lymphoma (DLBCL), prognostic heterogeneity is suggested to exist among the patients within the same IPI risk group. Hence, we investigated the pattern of distribution and prognostic impact of five IPI factors within the same IPI score. We retrospectively reviewed the medical records of 387 patients newly diagnosed as pathologically proven DLBCL between February 2002 and February 2010. We classified patients to IPI risk scores and categorized them according to the combinations of IPI. Then, we explored the frequency of five IPI factors and analyzed the correlation between these subgroups and efficacy outcomes: complete response (CR), event-free survival (EFS), and overall survival (OS). Survival estimates by IPI score in this cohort corresponded to the classic IPI. Elevated serum level of lactate dehydrogenase (LDH) was the most prevalently distributed factor throughout the scores, and patients with elevated serum level of LDH tended to have lower CR, inferior EFS, and/or OS irrespective of IPI scores. Particularly, among the subgroups of IPI score of 2, elevated serum level of LDH was significantly associated with inferior CR (73.1 vs 95.2 %), 3-year EFS (57 vs 87 %), and 3-year OS (58 vs 82 %). In addition, the higher serum level of LDH, particularly above 2,000 IU/L, was significantly correlated with the inferior survival outcomes (3-year EFS 78.0 vs 58.5 vs 45.5 vs 20.0 %, 3-year OS 86.0 vs 66.2 vs 58.2 vs 40.0 %). In conclusion, among five factors of IPI, elevated serum level of LDH seems to be the most frequently distributed and, more importantly, the most relevant IPI factor with the highest prognostic impact. These findings still warrant further validation in larger cohorts.
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Affiliation(s)
- J H Park
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Kim MJ, Kim BY, Lee DC, Choi J, Hwang SH, Park CS, Kim SW, Kim SW, Cho JH, Park YJ. A modified uvulopalatal flap with lateral pharyngoplasty for treatment in 92 adults with obstructive sleep apnoea syndrome. Clin Otolaryngol 2014; 38:415-9. [PMID: 23731664 DOI: 10.1111/coa.12134] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2013] [Indexed: 11/30/2022]
Affiliation(s)
- M J Kim
- Department of Otolaryngology-Head and Neck Surgery, The Catholic University of Korea, College of Medicine, Seoul, Korea
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Cardoso RC, Alves BRC, Prezotto LD, Thorson JF, Tedeschi LO, Keisler DH, Park CS, Amstalden M, Williams GL. Use of a stair-step compensatory gain nutritional regimen to program the onset of puberty in beef heifers. J Anim Sci 2014; 92:2942-9. [PMID: 24879767 DOI: 10.2527/jas.2014-7713] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [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: 01/10/2023] Open
Abstract
It was hypothesized that metabolic programming of processes underlying puberty can be shifted temporally through the use of a stair-step compensatory growth model such that puberty is optimally timed to occur at 11 to 12 mo of age. Forty crossbred beef heifers were weaned at approximately 3.5 mo of age and, after a 2-wk acclimation period, were assigned randomly to 1 of 4 nutritional groups: 1) low control (LC), restricted feed intake of a forage-based diet to promote BW gain of 0.5 kg/d until 14 mo of age, 2) high control (HC), controlled feed intake of a high-concentrate diet to promote BW gain of 1 kg/d until 14 mo of age, 3) stair-step 1 (SS-1), ad libitum feed intake of a high-concentrate diet until 6.5 mo of age followed by restricted access to a high-forage diet to promote BW gain of 0.35 kg/d until 9 mo of age, ad libitum feed intake of a high-concentrate diet until 11.5 mo of age, and restricted intake of a high-forage diet to promote BW gain of 0.35 kg/d until 14 mo of age, and 4) stair-step 2 (SS-2), reverse sequence of SS-1, beginning with restricted access to a high-forage diet. Body weight (every 2 wk) and circulating concentrations of leptin (monthly) were determined throughout the experiment. Concentrations of progesterone in blood samples collected twice weekly beginning at 8 mo of age were used to determine pubertal status. Body weight gain followed a pattern similar to that proposed in our experimental design. Circulating concentrations of leptin increased following distinct elevations in BW but decreased abruptly after feed intake restriction. Survival analysis indicated that the percentage of pubertal heifers in the LC group was lower (P < 0.05) than all other groups throughout the experiment. Although heifers in SS-1 were nutritionally restricted between 6.5 and 9 mo of age, the proportion pubertal by 12 mo of age did not differ (P = 0.36) from that of the HC group, with 80% and 70% pubertal in SS-1 and HC, respectively. In contrast, the proportion of heifers pubertal by 12 mo of age in the SS-2 group (40%) was lower (P < 0.05) than both HC and SS-1. However, by 14 mo of age, 90% of heifers in the SS-2 group had also attained puberty compared to only 40% of the LC group. In summary, these data provide evidence that changes in the nutritional and metabolic status during the early juvenile period can program the onset of puberty that occurs months later, allowing optimal timing of sexual maturation in replacement beef heifers.
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Affiliation(s)
- R C Cardoso
- Animal Reproduction Laboratory, Texas A&M AgriLife Research, Beeville 78102 Department of Animal Science, Texas A&M University, College Station 77843
| | - B R C Alves
- Department of Animal Science, Texas A&M University, College Station 77843
| | - L D Prezotto
- Animal Reproduction Laboratory, Texas A&M AgriLife Research, Beeville 78102 Department of Animal Science, Texas A&M University, College Station 77843
| | - J F Thorson
- Animal Reproduction Laboratory, Texas A&M AgriLife Research, Beeville 78102 Department of Animal Science, Texas A&M University, College Station 77843
| | - L O Tedeschi
- Department of Animal Science, Texas A&M University, College Station 77843
| | - D H Keisler
- Division of Animal Sciences, University of Missouri, Columbia 65211
| | - C S Park
- Department of Animal Sciences, North Dakota State University, Fargo 58108
| | - M Amstalden
- Department of Animal Science, Texas A&M University, College Station 77843
| | - G L Williams
- Animal Reproduction Laboratory, Texas A&M AgriLife Research, Beeville 78102 Department of Animal Science, Texas A&M University, College Station 77843
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Namgoong JM, Hwang S, Ahn CS, Kim KH, Moon DB, Ha TY, Song GW, Jung DH, Park GC, Park HW, Park CS, Park YH, Kang SH, Jung BH, Lee SG. A pilot study on the safety and efficacy of generic mycophenolate agent as conversion maintenance therapy in stable liver transplant recipients. Transplant Proc 2014; 45:3035-7. [PMID: 24157030 DOI: 10.1016/j.transproceed.2013.08.026] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE The patent covering mycophenolate mofetil (MMF) in Korea has expired and, thus, several generic MMF agents are now commercially available. The supply of Cellcept (Roche Korea) was interrupted at the end of 2011, so it was inevitable that a generic MMF would be used instead. During this period, we performed a prospective pilot study to examine the safety and efficacy of a generic mycophenolate agent (Myconol: Hanmi Pharmaceutical, Seoul Korea) for use as conversion maintenance therapy in stable liver transplantation (OLT) recipients. METHODS OLT recipients, who were treated with MMF on an outpatient basis from January 2012 to March 2012, attended follow-up interviews conducted. The patients had undergone OLT ≥ 2 years before the study, had tolerated Cellcept, and showed stable liver function. Fifty-three patients were followed up for more than 3 months after conversion to the same dose of Myconol. RESULTS After conversion to Myconol, 6 patients (11.3%) experienced new side effects, which disappeared when they reverted to Cellcept (n = 5) or stopped taking Myconol medication (n = 1). The side effects associated with Myconol included gastrointestinal symptoms (indigestion and diarrhea; n = 3), skin eruptions (n = 1), pruritus (n = 1), and insomnia (n = 1). The mean mycophenolic acid levels were 1.71 ± 0.88 μg/mL for Cellcept and 1.83 ± 0.91 μg/mL for Myconol, which showed a strong correlation (r(2) = 0.92, P < .001). CONCLUSIONS Myconol showed similar pharmacokinetics to those of Celcept, but a small proportion of patients experienced agent-specific side effects; therefore, patients should be closely monitored when taking Myconol. Also, further studies, with a greater number of patients, are required to identify the full spectrum of drug-associated side effects.
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Affiliation(s)
- J M Namgoong
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Shin HS, Nam KC, Park H, Choi HU, Kim HY, Park CS. Effective doses from panoramic radiography and CBCT (cone beam CT) using dose area product (DAP) in dentistry. Dentomaxillofac Radiol 2014; 43:20130439. [PMID: 24845340 DOI: 10.1259/dmfr.20130439] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES We compared the effective dose from panoramic radiography with that from cone beam CT (CBCT) using dose area product under adult and child exposure conditions. METHODS The effective doses of the cephalo, panorama, implant and dental modes of Alphard 3030 (Asahi Roentgen Ind., Co. Ltd, Kyoto, Japan) CBCT and the Jaw, Wide, Facial and temporomandibular joint modes of Rayscan Symphony (RAY Co., Ltd, Hwaseong, Republic of Korea) CBCT were compared with those of CRANEX(®) 3+ CEPH (Soredex Orion Corporation, Helsinki, Finland) panoramic radiography equipment under adult and child exposure conditions. Each effective dose was calculated using a conversion formula from dose area product meter measured values (VacuTec Messtechnik GmbH, Dresden, Germany). The conversion formulae used were suggested by Helmrot and Alm Carlsson and Batista et al, and they were applied with the tube voltage taken into consideration. RESULTS The maximum effective doses from the Alphard 3030 and Rayscan Symphony were 67 and 21 times greater than that from panoramic radiography, respectively. The ratios of the effective dose under the child setting to that under the adult condition were 0.60-0.62 and 0.84-0.95, and the maximum differences in effective doses between the adult and child exposure settings were equivalent to 27 and 4 times greater than a panoramic examination in the Alphard 3030 and Rayscan Symphony, respectively. CONCLUSIONS The effective CBCT doses were higher than those of panoramic radiography. The differences in effective doses between the adult and child CBCT settings were dependent on equipment type and exposure parameters. Therefore, adequate mode selection and control of exposure as well as further research are necessary to minimize the effective dose to patients, especially for radiosensitive children.
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Affiliation(s)
- H S Shin
- 1 Department of Oral and Maxillofacial Radiology, Yonsei University Dental Hospital, Seoul, Republic of Korea
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Moon DB, Lee SG, Hwang S, Kim KH, Ahn CS, Ha TY, Song GW, Jung DH, Park GC, Namkoong JM, Park HW, Park YH, Park CS. Toward more than 400 liver transplantations a year at a single center. Transplant Proc 2014; 45:1937-41. [PMID: 23769078 DOI: 10.1016/j.transproceed.2012.12.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2012] [Accepted: 12/04/2012] [Indexed: 12/30/2022]
Abstract
BACKGROUND For the first time at Asan Medical Center (AMC) we performed more than 400 liver transplantations (LTs) per year in 2011, despite same number of living donor liver transplantations (LDLTs). METHODS Our OLT program was started in 1992, but not activated well due to the scarcity of deceased donor organs. Since adult LDLTs using a left lobe and then a right lobe were successfully performed in 1997, we have developed several innovative techniques and approaches for adult LDLT, for example, modified right-lobe graft reconstructing middle hepatic branches in 1998, dual graft LDLT using 2 left lobes in 2000; new criteria for hepatocellular carcinoma (HCC); as well as ABO-incompatible LDLT, the first in the world. As a result, the number of LDLTs has increased rapidly but reached a plateau recently. Nationwide efforts to promote deceased donation increased the number of deceased donor liver transplantation (DDLT). RESULTS We have performed 317 LDLTs per year in 2010 and 2011, respectively. The number of LTs reached 403 in 2011. This large number was possible due to a remarkable increase of DDLTs from 50 in 2010 to 86 in 2011. Seventy-nine patients (68.1%) among 116 patients (28.8%) required an urgent LT receiving a DDLT. LT for HCC or ABO-mismatch comprised 50.3% (n = 150) or 8.7% (n = 35), respectively. In-hospital mortality rate in 2011 was 4.7%. CONCLUSIONS The increased LTs number at AMC was aided by the nationwide campaign.
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Affiliation(s)
- D B Moon
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Lim SM, Chang H, Yoon MJ, Hong YK, Kim H, Chung WY, Park CS, Nam KH, Kang SW, Kim MK, Kim SB, Lee SH, Kim HG, Na II, Kim YS, Choi MY, Kim JG, Park KU, Yun HJ, Kim JH, Cho BC. A multicenter, phase II trial of everolimus in locally advanced or metastatic thyroid cancer of all histologic subtypes. Ann Oncol 2013; 24:3089-94. [PMID: 24050953 DOI: 10.1093/annonc/mdt379] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- S M Lim
- Department of Internal Medicine, Division of Medical Oncology, Yonsei University College of Medicine, Seoul
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Khaing AA, Moe KT, Hong WJ, Park CS, Yeon KH, Park HS, Kim DC, Choi BJ, Jung JY, Chae SC, Lee KM, Park YJ. Phylogenetic relationships of chrysanthemums in Korea based on novel SSR markers. Genet Mol Res 2013; 12:5335-47. [PMID: 24301794 DOI: 10.4238/2013.november.7.8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Chrysanthemums are well known for their esthetic and medicinal values. Characterization of chrysanthemums is vital for their conservation and management as well as for understanding their genetic relationships. We found 12 simple sequence repeat markers (SSRs) of 100 designed primers to be polymorphic. These novel SSR markers were used to evaluate 95 accessions of chrysanthemums (3 indigenous and 92 cultivated accessions). Two hundred alleles were identified, with an average of 16.7 alleles per locus. KNUCRY-77 gave the highest polymorphic information content value (0.879), while KNUCRY-10 gave the lowest (0.218). Similar patterns of grouping were observed with a distance-based dendrogram developed using PowerMarker and model-based clustering with Structure. Three clusters with some admixtures were identified by model-based clustering. These newly developed SSR markers will be useful for further studies of chrysanthemums, such as taxonomy and marker-assisted selection breeding.
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Affiliation(s)
- A A Khaing
- Department of Plant Resources, College of Industrial Sciences, Kongju National University, Yesan, Republic of Korea
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Hong SH, Park CO, Park CS. Prediction of newly developed acute renal failure using serum phosphorus concentrations after living-donor liver transplantation. J Int Med Res 2013; 40:2199-212. [PMID: 23321177 DOI: 10.1177/030006051204000618] [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] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE This retrospective study investigated the predictive role of serum phosphorus concentration for acute renal failure (ARF), defined by the Risk Injury Failure Loss End-stage kidney disease (RIFLE) criteria, after living-donor liver transplantation (LDLT). METHODS Perioperative factors, including serum phosphorus concentrations, in LDLT recipients without pre-existing renal dysfunction were retrospectively analysed and compared between patients with or without post-LDLT ARF. RESULTS A total of 45 patients out of 350 (12.9%) met the RIFLE ARF criteria and experienced significantly higher postoperative mortality, longer intensive care unit stay and more frequent graft dysfunction than those patients without post-LDLT ARF. Multivariate logistic regression analyses showed that a serum phosphorus concentration ≥ 4.5 mg/dl on postoperative day 1 (relative risk [RR] 5.31; 95% confidence interval [CI] 2.56, 11.03), a preoperative model for end-stage liver disease score 20 points (RR 4.17, 95% CI 2.04, 8.52), and packed red blood cell transfusion 10 units (RR 2.55, 95% CI 1.13, 5.88) were independent risk factors for post-LDLT ARF. CONCLUSIONS Hyperphosphataemia on postoperative day 1 could be an early and simple indicator of ARF occurrence after LDLT.
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Affiliation(s)
- S H Hong
- Department of Anaesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
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Kim MS, Kim YJ, Lim HK, Park CS. Xenoreactive antibody response following pulmonary valve replacement using porcine bioprosthesis in the young. J Cardiothorac Surg 2013. [PMCID: PMC3844493 DOI: 10.1186/1749-8090-8-s1-o138] [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: 11/24/2022] Open
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Kim JH, Park CS, Park HD, Tae HS, Lee SH. Sustain and address discharge characteristics of AC-PDP with MgO surface coated by MgO nano crystal powders. J Nanosci Nanotechnol 2013; 13:3270-3275. [PMID: 23858842 DOI: 10.1166/jnn.2013.7317] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This paper examined the sustain and address discharge characteristics of ac-PDPs with MgO surface coated by MgO nano crystal powders. The MgO nano crystal powder was deposited by about 5% on the MgO surface by using the spray method. To investigate the effects of the partial addition of MgO nano crystal powders on the sustain discharge as well as the address discharge, the luminance, IR spectra of 823, 828 nm, cathodoluminance, and firing voltage were measured with the measurement of the address delay times and wall voltage variation in the 42-inch ac-PDP module with a high Xe content of 17%. As a result, the statistical delay characteristics were improved considerably especially under the low panel temperature of -5 degrees C for the MgO surface with MgO nano crystal powder. However, both MgO surfaces with and without the MgO nano crystal powder showed almost similar sustain and address discharge characteristics except the statistical delay characteristics.
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Affiliation(s)
- J H Kim
- School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu 702-701, Korea
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Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Xiao T, Martin L, Powell A, Wilkinson G, Mendez H, Asner DM, Tatishvili G, Ge JY, Huang GS, Miller DH, Pavlunin V, Shipsey IPJ, Xin B, Adams GS, Hu D, Moziak B, Napolitano J, Ecklund KM, Insler J, Muramatsu H, Park CS, Pearson LJ, Thorndike EH, Ricciardi S, Thomas C, Artuso M, Blusk S, Mountain R, Skwarnicki T, Stone S, Zhang LM, Bonvicini G, Cinabro D, Lincoln A, Smith MJ, Zhou P, Zhu J, Naik P, Rademacker J, Edwards KW, Randrianarivony K, Briere RA, Vogel H, Onyisi PUE, Rosner JL, Alexander JP, Cassel DG, Das S, Ehrlich R, Gibbons L, Gray SW, Hartill DL, Heltsley BK, Kreinick DL, Kuznetsov VE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Sun WM, Yelton J, Rubin P, Lowrey N, Mehrabyan S, Selen M, Wiss J, Libby J, Kornicer M, Mitchell RE, Tarbert CM, Besson D, Pedlar TK, Cronin-Hennessy D, Hietala J. First measurement of the form factors in the decays D0 → ρ- e+ ν(e) and D+ → ρ0 e+ ν(e). Phys Rev Lett 2013; 110:131802. [PMID: 23581310 DOI: 10.1103/physrevlett.110.131802] [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] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Indexed: 06/02/2023]
Abstract
The beauty to up quark coupling constant |V(ub)| can be extracted from B → ρ e+ ν(e) combined with the form factors for D → K* e+ ν(e) and B → V ℓ+ ℓ- and D → ρ e+ ν(e). Using the entire CLEO-c ψ(3770) → DD event sample, corresponding to an integrated luminosity of 818 pb(-1) and approximately 5.4×10(6) DD events, we measure the form factors for the decays D0 → ρ- e+ ν(e) and D+ → ρ0 e+ ν(e) for the first time and the branching fractions with improved precision. A four-dimensional unbinned maximum likelihood fit determines the form factor ratios to be V(0)/A1(0)=1.48±0.15±0.05 and A2(0)/A1(0)=0.83±0.11±0.04. Assuming Cabibbo-Kobayashi-Maskawa unitarity, the known D meson lifetimes, and our measured branching fractions we obtain the form factor normalizations A1(0), A2(0), and V(0). We also present a measurement of the branching fraction for D+ → ω e+ ν(e) with improved precision.
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Affiliation(s)
- S Dobbs
- Northwestern University, Evanston, Illinois 60208, USA
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Jin Lee K, Sik Park C, Seok Woo J, Han Kim D, Ma J, Hui Lee E. Mitsugumin 53 Attenuates the Activity of Sarcoplasmic Reticulum Ca2+-ATPase 1a (SERCA1a) in Skeletal Muscle. Biophys J 2013. [DOI: 10.1016/j.bpj.2012.11.1626] [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: 11/30/2022] Open
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Hong SH, Park CS, Jung HS, Choi H, Lee SR, Lee J, Choi JH. A comparison of intra-operative blood loss and acid-base balance between vasopressor and inotrope strategy during living donor liver transplantation: a randomised, controlled study. Anaesthesia 2012; 67:1091-100. [PMID: 22950390 DOI: 10.1111/j.1365-2044.2012.07198.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Administration of vasopressors or inotropes during liver transplant surgery is almost universal, as this procedure is often accompanied by massive haemorrhage, acid-base imbalance, and cardiovascular instability. However, the actual agents that should be used and the choice between a vasopressor and an inotrope strategy are not clear from existing published evidence. In this prospective, randomised, controlled and single-blinded study, we compared the effects of a vasopressor strategy on intra-operative blood loss and acid-base status with those of an inotrope strategy during living donor liver transplantation. Seventy-six adult liver recipients with decompensated cirrhosis were randomly assigned to receive a continuous infusion of either phenylephrine at a dose of 0.3-0.4 μg.kg(-1).min(-1) or dopamine and/or dobutamine at 2-8 μg.kg(-1).min(-1) during surgery. Vascular resistance was higher over time in the phenylephrine group than in the dopamine/dobutamine group. Estimated blood loss was significantly lower in the phenylephrine group than in the dopamine/dobutamine group (mean (SD) 4.5 (1.8) l vs 6.1 (3.4) l, respectively, p=0.011). Patients in the phenylephrine group had lower lactate levels in the late pre-anhepatic and the early anhepatic phase and needed less bicarbonate administration than those in the dopamine/dobutamine group (median (IQR [range]) 40 (0-100 [0-160]) mEq vs 70 (40-163 [0-260]) mEq, respectively, p=0.018). Postoperative clinical outcomes and laboratory-measured hepatic and renal function did not differ between the groups. Increased vascular resistance and reduction of portal blood flow by intra-operative phenylephrine infusion is assumed to decrease the amount of intra-operative bleeding and thereby ameliorate the progression of lactic acidosis during liver transplant surgery.
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Affiliation(s)
- S H Hong
- Department of Anaesthesiology and Pain Medicine, Seoul St. Mary's Hospital, Seoul, Korea
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Park CS, Cha H, Kwon EJ, Jeong D, Hajjar RJ, Kranias EG, Cho C, Park WJ, Kim DH. AAV-mediated knock-down of HRC exacerbates transverse aorta constriction-induced heart failure. PLoS One 2012; 7:e43282. [PMID: 22952658 PMCID: PMC3429470 DOI: 10.1371/journal.pone.0043282] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 07/23/2012] [Indexed: 01/10/2023] Open
Abstract
Background Histidine-rich calcium binding protein (HRC) is located in the lumen of sarcoplasmic reticulum (SR) that binds to both triadin (TRN) and SERCA affecting Ca2+ cycling in the SR. Chronic overexpression of HRC that may disrupt intracellular Ca2+ homeostasis is implicated in pathogenesis of cardiac hypertrophy. Ablation of HRC showed relatively normal phenotypes under basal condition, but exhibited a significantly increased susceptibility to isoproterenol-induced cardiac hypertrophy. In the present study, we characterized the functions of HRC related to Ca2+ cycling and pathogenesis of cardiac hypertrophy using the in vitro siRNA- and the in vivo adeno-associated virus (AAV)-mediated HRC knock-down (KD) systems, respectively. Methodology/Principal Findings AAV-mediated HRC-KD system was used with or without C57BL/6 mouse model of transverse aortic constriction-induced failing heart (TAC-FH) to examine whether HRC-KD could enhance cardiac function in failing heart (FH). Initially we expected that HRC-KD could elicit cardiac functional recovery in failing heart (FH), since predesigned siRNA-mediated HRC-KD enhanced Ca2+ cycling and increased activities of RyR2 and SERCA2 without change in SR Ca2+ load in neonatal rat ventricular cells (NRVCs) and HL-1 cells. However, AAV9-mediated HRC-KD in TAC-FH was associated with decreased fractional shortening and increased cardiac fibrosis compared with control. We found that phospho-RyR2, phospho-CaMKII, phospho-p38 MAPK, and phospho-PLB were significantly upregulated by HRC-KD in TAC-FH. A significantly increased level of cleaved caspase-3, a cardiac cell death marker was also found, consistent with the result of TUNEL assay. Conclusions/Significance Increased Ca2+ leak and cytosolic Ca2+ concentration due to a partial KD of HRC could enhance activity of CaMKII and phosphorylation of p38 MAPK, causing the mitochondrial death pathway observed in TAC-FH. Our results present evidence that down-regulation of HRC could deteriorate cardiac function in TAC-FH through perturbed SR-mediated Ca2+ cycling.
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Affiliation(s)
- Chang Sik Park
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
| | - Hyeseon Cha
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
| | - Eun Jeong Kwon
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
| | - Dongtak Jeong
- Cardiovascular Research Center, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Roger J. Hajjar
- Cardiovascular Research Center, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Evangelia G. Kranias
- Department of Pharmacology & Cell Biophysics, College of Medicine, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Chunghee Cho
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
| | - Woo Jin Park
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
| | - Do Han Kim
- College of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea
- * E-mail:
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Park HW, Hwang S, Ahn CS, Kim KH, Moon DB, Ha TY, Song GW, Jung DH, Park GC, Namgoong JM, Yoon SY, Park CS, Park YH, Lee HJ, Lee SG. De novo malignancies after liver transplantation: incidence comparison with the Korean cancer registry. Transplant Proc 2012; 44:802-5. [PMID: 22483500 DOI: 10.1016/j.transproceed.2012.01.027] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
PURPOSE De novo malignancy is not uncommon after liver transplantation (OLT). We have compared the incidence of novo malignancy following OLT with those among the general Korean population. METHODS Between January 1998 and December 2008, 1952 adult OLT were performed, including 1714 living donor and 238 deceased donor grafts whose medical records were retrospectively reviewed. RESULTS Among the 1952 patients, 44 (2.3%) showed de novo malignancies after a mean posttransplant period of 41 months. Among the 14 types of malignancy the most frequent was stomach cancer (n = 11; 25.0%), colorectal cancer (n = 9; 20.5%), breast cancer (n = 4; 9.1%), and thyroid cancer (n = 3; 6.8%). These patients underwent aggressive treatment, including surgery, chemotherapy, and radiotherapy, except for one patient with an aggressive primary liver cancer. Over a mean follow-up of 45 months after diagnosis of de novo malignancy, 13 patients (29.5%) died; the overall 3-year patient survival rate was 67.5%. The relative risk of malignancy following OLT was 7.7-fold higher in men and 7.3-fold higher in women than the Korean general population. CONCLUSIONS OLT recipients must be checked periodically for de novo malignancy throughout their lives, especially for cancers common in the general population.
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Affiliation(s)
- H W Park
- Division of Hepatobiliary Surgery and Liver Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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