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Yun J, Yun S, Park JE, Cheong EN, Park SY, Kim N, Kim HS. Deep Learning of Time-Signal Intensity Curves from Dynamic Susceptibility Contrast Imaging Enables Tissue Labeling and Prediction of Survival in Glioblastoma. AJNR Am J Neuroradiol 2023; 44:543-552. [PMID: 37105676 PMCID: PMC10171378 DOI: 10.3174/ajnr.a7853] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 03/21/2023] [Indexed: 04/29/2023]
Abstract
BACKGROUND AND PURPOSE An autoencoder can learn representative time-signal intensity patterns to provide tissue heterogeneity measures using dynamic susceptibility contrast MR imaging. The aim of this study was to investigate whether such an autoencoder-based pattern analysis could provide interpretable tissue labeling and prognostic value in isocitrate dehydrogenase (IDH) wild-type glioblastoma. MATERIALS AND METHODS Preoperative dynamic susceptibility contrast MR images were obtained from 272 patients with IDH wild-type glioblastoma (training and validation, 183 and 89 patients, respectively). The autoencoder was applied to the dynamic susceptibility contrast MR imaging time-signal intensity curves of tumor and peritumoral areas. Representative perfusion patterns were defined by voxelwise K-means clustering using autoencoder latent features. Perfusion patterns were labeled by comparing parameters with anatomic reference tissues for baseline, signal drop, and percentage recovery. In the validation set (n = 89), a survival model was created from representative patterns and clinical predictors using Cox proportional hazard regression analysis, and its performance was calculated using the Harrell C-index. RESULTS Eighty-nine patients were enrolled. Five representative perfusion patterns were used to characterize tissues as high angiogenic tumor, low angiogenic/cellular tumor, perinecrotic lesion, infiltrated edema, and vasogenic edema. Of these, the low angiogenic/cellular tumor (hazard ratio, 2.18; P = .047) and infiltrated edema patterns (hazard ratio, 1.88; P = .009) in peritumoral areas showed significant prognostic value. The combined perfusion patterns and clinical predictors (C-index, 0.72) improved prognostication when added to clinical predictors (C-index, 0.55). CONCLUSIONS The autoencoder perfusion pattern analysis enabled tissue characterization of peritumoral areas, providing heterogeneity and dynamic information that may provide useful prognostic information in IDH wild-type glioblastoma.
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Affiliation(s)
- J Yun
- From the Departments of Convergence Medicine (J.Y., N.K.)
- Radiology and Research Institute of Radiology (J.Y., J.E.P., N.K., H.S.K.), Asan Medical Center
| | - S Yun
- Department of Radiology (S.Y.), Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - J E Park
- Radiology and Research Institute of Radiology (J.Y., J.E.P., N.K., H.S.K.), Asan Medical Center
| | - E-N Cheong
- Medical Science and Asan Medical Institute of Convergence Science and Technology (E.-N.C.), University of Ulsan College of Medicine, Seoul, Korea
| | - S Y Park
- Department of Statistics and Data Science (S.Y.P.), Korea National Open University, Seoul, Korea
| | - N Kim
- From the Departments of Convergence Medicine (J.Y., N.K.)
- Radiology and Research Institute of Radiology (J.Y., J.E.P., N.K., H.S.K.), Asan Medical Center
| | - H S Kim
- Radiology and Research Institute of Radiology (J.Y., J.E.P., N.K., H.S.K.), Asan Medical Center
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Kwon YS, Jang JG, Lee J, Choi KJ, Park JE. Risk factors for peripheral neuropathy in patients on linezolid-containing regimens for drug-resistant TB. Int J Tuberc Lung Dis 2023; 27:232-234. [PMID: 36855040 DOI: 10.5588/ijtld.22.0423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Affiliation(s)
- Y S Kwon
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - J G Jang
- Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - J Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - K-J Choi
- Department of Internal Medicine, Daegu Catholic University School of Medicine, Daegu, Republic of Korea
| | - J E Park
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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Kim WH, Jung YE, Roh D, Kim D, Chae JH, Park JE. Development of Korean Version of PTSD Checklist for DSM-5 (K-PCL-5) and the Short Form (K-PCL-5-S). Psychiatry Investig 2022; 19:661-667. [PMID: 36059055 PMCID: PMC9441456 DOI: 10.30773/pi.2022.0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/02/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE This study presents the reliability and validity of the Korean version of the post-traumatic stress disorder (PTSD) checklist for the Diagnostic and Statistical Manual for Mental Disorders-fifth edition (DSM-5) (K-PCL-5) and the short form (K-PCL-5-S). METHODS Seventy-one subjects with PTSD, 74 subjects with mood or anxiety disorders, and 99 healthy controls were enrolled. The Korean version of the Structured Clinical Interview for DSM-5-research version was used to confirm the presence of PTSD. The Beck Depression Inventory-II (BDI-II), Beck Anxiety Inventory (BAI), Impact of Event Scale-Revised (IES-R), and Spielberger State Trait Anxiety Inventory (STAI) were used to evaluate the concurrent validity of the K-PCL-5 and K-PCL-5-S. RESULTS It presented good internal consistency (Cronbach's α=0.93) and test-retest reliability (r=0.90). The K-PCL-5 and K-PCL-5-S were highly correlated with the BDI-II, BAI, IES-R, STAI-S, and STAI-T. The suggested cutoff score for PTSD was 33 for the K-PCL-5 with a sensitivity of 88.51 and specificity of 89.09, and 6 for the K-PCL-5-S with a sensitivity of 91.95 and specificity of 89.09. The data were best explained with a one-factor model. CONCLUSION These results demonstrated the good reliability and validity of the K-PCL-5 and K-PCL-5-S, and their suitability as simple tools for PTSD assessment.
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Affiliation(s)
- Won-Hyoung Kim
- Department of Psychiatry, Inha University Hospital, Inha University School of Medicine, Incheon, Republic of Korea
| | - Young-Eun Jung
- Department of Psychiatry, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Daeyoung Roh
- Department of Psychiatry, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Republic of Korea
| | - Daeho Kim
- Department of Psychiatry, Hanyang University Guri Hospital, Hanyang University Medical School, Guri, Republic of Korea
| | - Jeong-Ho Chae
- Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, Republic of Korea
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Lee MO, Lee SK, Park JE, Jin SY. The recurrence of phantom limb pain with spinal anesthesia. Niger J Clin Pract 2022; 25:728-730. [DOI: 10.4103/njcp.njcp_1875_21] [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: 11/04/2022]
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Kim I, Kim D, Kim NH, Park JE. A psychometric evaluation of the National Stressful Events Survey for PTSD-Short Scale (NSESSS-PTSD) among Korean psychiatric outpatients. Eur J Psychotraumatol 2022; 13:2117905. [PMID: 36186159 PMCID: PMC9518649 DOI: 10.1080/20008066.2022.2117905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The National Stressful Events Survey for PTSD-Short Scale (NSESSS-PTSD) is a brief screening measure for DSM-5 PTSD that has not been evaluated for its psychometric properties in clinical population. We developed a Korean version of the original English scale through translation-back translation process and examined its reliability and validity among treatment-seeking adults at a psychiatric outpatient unit of a university-affiliated hospital in South Korea. The sample comprised adults diagnosed with PTSD (n = 100) and other psychiatric disorders (n = 134). The NSESSS-PTSD, the PTSD Checklist for DSM-5 (PCL-5), the Beck Depression Inventory-II (BDI-II), and the Beck Anxiety Inventory (BAI) were used to determine validity and reliability. The findings show modest test-retest reliability (r = .43), good internal consistency (Cronbach's α = .81), high convergent validity (r = .78) with PCL-5 and good concurrent validity with the BDI (r = .55) and BAI (r = .50), respectively. A cut-off score of 16 best predicted PTSD from other psychiatric disorders with specificity of .90 and sensitivity of .87. This study reveals sound psychometric properties of the Korean version of the NSESSS-PTSD and supports its use in the clinical population.
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Affiliation(s)
- Ilbin Kim
- Department of Psychiatry, Hanyang University Medical College, Seoul, South Korea
| | - Daeho Kim
- Department of Psychiatry, Hanyang University Medical College, Seoul, South Korea
| | - Nam Hee Kim
- Suwon Smile Center for Criminal Victims, Suwon, South Korea
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Kim M, Park JE, Emblem K, Bjørnerud A, Kim HS. Vessel Type Determined by Vessel Architectural Imaging Improves Differentiation between Early Tumor Progression and Pseudoprogression in Glioblastoma. AJNR Am J Neuroradiol 2021; 42:663-670. [PMID: 33541891 DOI: 10.3174/ajnr.a6984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 11/01/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND PURPOSE Currently available perfusion parameters are limited in differentiating early tumor progression and pseudoprogression with no insight about vessel size and type. We aimed to investigate differences in vessel size and type between early tumor progression and pseudoprogression in posttreatment glioblastoma and to demonstrate diagnostic performance using vessel architectural imaging. MATERIALS AND METHODS Fifty-eight patients with enlarging contrast-enhancing masses in posttreatment glioblastomas underwent simultaneous gradient recalled-echo and spin-echo dynamic susceptibility contrast imaging. Relative CBV and vessel architectural imaging parameters, including the relative vessel size index, peak shift between gradient recalled echo and spin-echo bolus signal peaks, and arterial dominance scores using spatial dominance of arterial/venous vessel type, were calculated and compared between the 2 conditions. The area under the curve and cross-validation were performed to compare the diagnostic performance of the relative CBV, vessel architectural imaging parameters, and their combinations. RESULTS There were 41 patients with early tumor progression and 17 patients with pseudoprogression. Relative to pseudoprogression, early tumor progression showed a lower peak shift (-0.02 versus 0.33, P = .02) and a lower arterial dominance score (1.46 versus 2.11, P = .001), indicating venous dominance. Patients with early tumor progression had higher relative CBV (1.88 versus 1.38, P = .02) and a tendency toward a larger relative vessel size index (99.67 versus 83.17, P = .15) than those with pseudoprogression. Combining arterial dominance scores and relative CBV showed significantly higher diagnostic performance (area under the curve = 0.82; 95% CI, 0.70-0.94; P = .02) than relative CBV alone (area under the curve = 0.64; 95% CI, 0.49-0.79) in distinguishing early tumor progression from pseudoprogression. CONCLUSIONS Vessel architectural imaging significantly improved the diagnostic performance of relative CBV by demonstrating venous dominance and a tendency toward larger vessel size in early tumor progression.
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Affiliation(s)
- M Kim
- From the Department of Radiology and Research Institute of Radiology (M.K., J.E.P., H.S.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J E Park
- From the Department of Radiology and Research Institute of Radiology (M.K., J.E.P., H.S.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - K Emblem
- Department of Diagnostic Physics, (K.E.)
| | - A Bjørnerud
- Unit for Computational Radiology and Artificial Intelligence (A.B.), Division of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway
- Department of Physics (A.B.), University of Oslo, Oslo, Norway
| | - H S Kim
- From the Department of Radiology and Research Institute of Radiology (M.K., J.E.P., H.S.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Shin I, Kim H, Ahn SS, Sohn B, Bae S, Park JE, Kim HS, Lee SK. Development and Validation of a Deep Learning-Based Model to Distinguish Glioblastoma from Solitary Brain Metastasis Using Conventional MR Images. AJNR Am J Neuroradiol 2021; 42:838-844. [PMID: 33737268 DOI: 10.3174/ajnr.a7003] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/13/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND PURPOSE Differentiating glioblastoma from solitary brain metastasis preoperatively using conventional MR images is challenging. Deep learning models have shown promise in performing classification tasks. The diagnostic performance of a deep learning-based model in discriminating glioblastoma from solitary brain metastasis using preoperative conventional MR images was evaluated. MATERIALS AND METHODS Records of 598 patients with histologically confirmed glioblastoma or solitary brain metastasis at our institution between February 2006 and December 2017 were retrospectively reviewed. Preoperative contrast-enhanced T1WI and T2WI were preprocessed and roughly segmented with rectangular regions of interest. A deep neural network was trained and validated using MR images from 498 patients. The MR images of the remaining 100 were used as an internal test set. An additional 143 patients from another tertiary hospital were used as an external test set. The classifications of ResNet-50 and 2 neuroradiologists were compared for their accuracy, precision, recall, F1 score, and area under the curve. RESULTS The areas under the curve of ResNet-50 were 0.889 and 0.835 in the internal and external test sets, respectively. The area under the curve of neuroradiologists 1 and 2 were 0.889 and 0.768 in the internal test set and 0.857 and 0.708 in the external test set, respectively. CONCLUSIONS A deep learning-based model may be a supportive tool for preoperative discrimination between glioblastoma and solitary brain metastasis using conventional MR images.
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Affiliation(s)
- I Shin
- From the Department of Radiology, Research Institute of Radiological Science and Center for Clinical Imaging Data Science (I.S., H.K., S.S.A., B.S., S.-K.L.), Yonsei University College of Medicine, Seoul, Korea
| | - H Kim
- From the Department of Radiology, Research Institute of Radiological Science and Center for Clinical Imaging Data Science (I.S., H.K., S.S.A., B.S., S.-K.L.), Yonsei University College of Medicine, Seoul, Korea
| | - S S Ahn
- From the Department of Radiology, Research Institute of Radiological Science and Center for Clinical Imaging Data Science (I.S., H.K., S.S.A., B.S., S.-K.L.), Yonsei University College of Medicine, Seoul, Korea
| | - B Sohn
- From the Department of Radiology, Research Institute of Radiological Science and Center for Clinical Imaging Data Science (I.S., H.K., S.S.A., B.S., S.-K.L.), Yonsei University College of Medicine, Seoul, Korea
| | - S Bae
- Department of Radiology (S.B.), National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - J E Park
- Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K.), Asan Medical Center, University of Ulsan College of Medicine
| | - H S Kim
- Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K.), Asan Medical Center, University of Ulsan College of Medicine
| | - S-K Lee
- From the Department of Radiology, Research Institute of Radiological Science and Center for Clinical Imaging Data Science (I.S., H.K., S.S.A., B.S., S.-K.L.), Yonsei University College of Medicine, Seoul, Korea
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Park JE, Kim JY, Kim HS, Shim WH. Comparison of Dynamic Contrast-Enhancement Parameters between Gadobutrol and Gadoterate Meglumine in Posttreatment Glioma: A Prospective Intraindividual Study. AJNR Am J Neuroradiol 2020; 41:2041-2048. [PMID: 33060100 DOI: 10.3174/ajnr.a6792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/22/2020] [Indexed: 01/10/2023]
Abstract
BACKGROUND AND PURPOSE Differences in molecular properties between one-molar and half-molar gadolinium-based contrast agents are thought to affect parameters obtained from dynamic contrast-enhanced imaging. The aim of our study was to investigate differences in dynamic contrast-enhanced parameters between one-molar nonionic gadobutrol and half-molar ionic gadoterate meglumine in patients with posttreatment glioma. MATERIALS AND METHODS This prospective study enrolled 32 patients who underwent 2 20-minute dynamic contrast-enhanced examinations, one with gadobutrol and one with gadoterate meglumine. The model-free parameter of area under the signal intensity curve from 30 to 1100 seconds and the Tofts model-based pharmacokinetic parameters were calculated and compared intraindividually using paired t tests. Patients were further divided into progression (n = 12) and stable (n = 20) groups, which were compared using Student t tests. RESULTS Gadobutrol and gadoterate meglumine did not show any significant differences in the area under the signal intensity curve or pharmacokinetic parameters of K trans, Ve, Vp, or Kep (all P > .05). Gadobutrol showed a significantly higher mean wash-in rate (0.83 ± 0.64 versus 0.29 ± 0.63, P = .013) and a significantly lower mean washout rate (0.001 ± 0.0001 versus 0.002 ± 0.002, P = .02) than gadoterate meglumine. Trends toward higher area under the curve, K trans, Ve, Vp, wash-in, and washout rates and lower Kep were observed in the progression group in comparison with the treatment-related-change group, regardless of the contrast agent used. CONCLUSIONS Model-free and pharmacokinetic parameters did not show any significant differences between the 2 gadolinium-based contrast agents, except for a higher wash-in rate with gadobutrol and a higher washout rate with gadoterate meglumine, supporting the interchangeable use of gadolinium-based contrast agents for dynamic contrast-enhanced imaging in patients with posttreatment glioma.
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Affiliation(s)
- J E Park
- From the Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K., W.H.S.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J Y Kim
- Department of Radiology (J.Y.K.), Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - H S Kim
- From the Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K., W.H.S.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - W H Shim
- From the Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K., W.H.S.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Park MH, Park JE, Kim MS, Yun JI, Choi K, Lee E, Lee ST. Determination of Medium Condition Effective to Cryopreservation of Primary Spermatogonial Stem Cells Derived from Porcine Neonatal Testes. Cryo Letters 2019; 40:312-321. [PMID: 33966057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
BACKGROUND The superior genetic resources of breeding pigs have been preserved for use through freezing the sperm or semen. However, because there is no way to collect their sperm or semen after depletion, the generation of sperm via the differentiation of porcine spermatogonial stem cells (SSCs) can be an alternative. To date, there have been no reports of techniques customized to in-vitro culture and differentiation into sperm in porcine SSCs. Accordingly, it is important to preserve porcine SSCs with outstanding genetic backgrounds until these technologies are developed. Unfortunately, a protocol for the long-term preservation of porcine SSCs has yet to be reported. OBJECTIVE We tried to develop a cryopreservation medium to preserve the characteristics of undifferentiated porcine SSCs for long-term cryopreservation. MATERIALS AND METHODS SSCs retrieved from porcine testes were freeze-cryopreserved in StemPro-34 medium supplemented with various concentrations of fetal bovine serum (FBS), dimethyl sulfoxide (DMSO), and trehalose; then, after 7 days, the viability and alkaline phosphatase (AP) activity was measured in thawed porcine SSCs. Additionally, we investigated the use of hypotaurine and/or glutathione as antioxidants in the optimized freezing medium for maintaining the viability and AP activity of porcine SSCs during the freezing-cryopreservation-thawing process. RESULTS Porcine SSCs frozen-cryopreserved-thawed in StemPro-34 medium supplemented with 10% (v/v) FBS, 10% (v/v) DMSO, 200 mM trehalose, 5 mM hypotaurine, and 5 mM glutathione showed the highest viability and AP activity. CONCLUSION We optimized a cryopreservation medium that inhibits the loss of viability and the increases differentiation post-thawing of the frozen porcine SSCs.
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Affiliation(s)
- M H Park
- Dept. Animal Life Science, Kangwon National University, Chuncheon, Republic of Korea
| | - J E Park
- Dept. Animal Life Science, Kangwon National University, Chuncheon, Republic of Korea
| | - M S Kim
- Dept. Animal Life Science, Kangwon National University, Chuncheon, Republic of Korea
| | - J I Yun
- Division of Animal Resource Science, Kangwon National University, Chuncheon, Republic of Korea
| | - K Choi
- Optipharm Inc., Cheongju, Republic of Korea
| | - E Lee
- College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea
| | - S T Lee
- Dept. Animal Life Science; Dept. Applied Animal Science, Kangwon National University, Chuncheon, Republic of Korea.
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Kim WH, Jung YE, Roh D, Kim D, Kang SH, Chae JH, Park JE. Reliability and Validity of the Korean Version of Clinician-Administered Posttraumatic Stress Disorder Scale for DSM-5. J Korean Med Sci 2019; 34:e219. [PMID: 31432652 PMCID: PMC6698450 DOI: 10.3346/jkms.2019.34.e219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 07/09/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND For diagnosis of post-traumatic stress disorder (PTSD), the Clinician-Administered PTSD Scale (CAPS) is one of the most widely used structured diagnostic interviews. METHODS In this study, we aimed to develop and validate the Korean version of CAPS for the Diagnostic and Statistical Manual of Mental Disorders, 5th edition ([DSM-5] K-CAPS-5). Seventy-one subjects with PTSD, 74 with mood disorder or anxiety disorder, and 99 as healthy controls were enrolled. The Korean version of the structured clinical interview for DSM-5-research version was used to assess the convergent validity of K-CAPS-5. BDI-II, BAI, IES-R, and STAI was used to evaluate the concurrent validity. RESULTS All subjects completed various psychometric assessments including K-CAPS-5. K-CAPS-5 presented good internal consistency (Cronbach's α = 0.92) and test-retest reliability (r = 0.91). K-CAPS-5 showed strong correlations with the structured clinical interview for DSM-5 PTSD (k = 0.893). Among the three subject groups listed above there were significant differences in the K-CAPS-5 total score. The data were best explained by a six-factor model. CONCLUSION These results demonstrated the good reliability and validity of K-CAPS-5 and its suitability for use as a simple but structured instrument for PTSD assessment.
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Affiliation(s)
- Won Hyoung Kim
- Department of Psychiatry, Inha University Hospital, Inha University School of Medicine, Incheon, Korea
| | - Young Eun Jung
- Department of Psychiatry, Jeju National University Hospital, Jeju National University School of Medicine, Jeju, Korea
| | - Daeyoung Roh
- Department of Psychiatry, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Daeho Kim
- Department of Psychiatry, Hanyang University Guri Hospital, Hanyang University Medical School, Guri, Korea
| | - Suk Hoon Kang
- Department of Psychiatry, Graduated School, Yonsei University College of Medicine, Seoul, Korea
| | - Jeong Ho Chae
- Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, Korea.
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Park JE, Miller M, Rhyne J, Wang Z, Hazen SL. Differential effect of short-term popular diets on TMAO and other cardio-metabolic risk markers. Nutr Metab Cardiovasc Dis 2019; 29:513-517. [PMID: 30940489 DOI: 10.1016/j.numecd.2019.02.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/25/2019] [Accepted: 02/11/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Dietary nutrient intake and its metabolism by the gut microbiome have recently been implicated in cardiovascular disease (CVD) risk. In particular, trimethylamine N-oxide (TMAO), a metabolite of the gut microbiota, has been shown to be a predictor of incident CVD events. Elevated levels of branched-chain amino acids (BCAA) have also been associated with an increased propensity for insulin resistance. METHODS To study the association of dietary intake with systemic TMAO, its nutrient precursors, and BCAA levels on fasting plasma levels of TMAO and its nutrient precursors and BCAA, we conducted an exploratory post-hoc analysis of 3 popular diets - high fat (Atkins), Mediterranean (South Beach), and very low fat (Ornish) - using plasma samples from a prior randomized, crossover study, with each isocaloric dietary phase lasting 4 weeks. Metabolites were quantified using stable isotope dilution HPLC with on-line tandem mass spectrometry. RESULTS Compared to the low fat Ornish phase, the high fat Atkins dietary phase was characterized by increased levels of TMAO (3.3 vs. 1.8 μM, p = 0.01), and the BCAA valine (272.8 vs. 235.8 μM, p = 0.005) and leucine (105.9 vs. 96.4 μM, p = 0.01). The high fat Atkins dietary phase was also associated with higher levels of TMAO (3.3 vs 1.6 μM, p = 0.04), valine (272.8 vs. 240.7 μM, p = 0.004), and leucine (105.9 vs. 96.4 μM, p = 0.01) compared to baseline. CONCLUSIONS These data suggest that over a 4-week interval, a saturated fat diet that is predominantly animal-based, compared to an isocaloric, low fat, predominantly plant-based diet, is associated with heightened risk for cardiometabolic derangements, as monitored by a higher plasma levels of both TMAO and BCAA.
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Affiliation(s)
- J E Park
- Department of Internal Medicine, University of Maryland Medical Center, 22 S Greene St, N3E09, Baltimore, MD, MD 21201, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Maryland School of Medicine, 110 S Paca St, Suite 7-124, Baltimore, MD 21201, USA.
| | - M Miller
- Department of Internal Medicine, University of Maryland Medical Center, 22 S Greene St, N3E09, Baltimore, MD, MD 21201, USA; Division of Cardiovascular Medicine, Department of Medicine, University of Maryland School of Medicine, 110 S Paca St, Suite 7-124, Baltimore, MD 21201, USA; Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA.
| | - J Rhyne
- Division of Cardiovascular Medicine, Department of Medicine, University of Maryland School of Medicine, 110 S Paca St, Suite 7-124, Baltimore, MD 21201, USA.
| | - Z Wang
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, NC10, Cleveland, OH 44195, USA.
| | - S L Hazen
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, NC10, Cleveland, OH 44195, USA; Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA.
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Jung YE, Kim D, Kim WH, Roh D, Chae JH, Park JE. A Brief Screening Tool for PTSD: Validation of the Korean Version of the Primary Care PTSD Screen for DSM-5 (K-PC-PTSD-5). J Korean Med Sci 2018; 33:e338. [PMID: 30584416 PMCID: PMC6300662 DOI: 10.3346/jkms.2018.33.e338] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/27/2018] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study was to develop and evaluate psychometrically the Korean version of the Primary Care Posttraumatic Stress Disorder Screen for the Diagnostic and Statistical Manual-fifth edition (K-PC-PTSD-5). In total, 252 participants were interviewed with the Structured Clinical Interview for Diagnostic and Statistical Manual-fifth edition-research version (SCID-5-RV). The K-PC-PTSD-5 showed good internal consistency (α = 0.872), test-retest reliability (r = 0.89), and concurrent validity (r = 0.81). A score of 3 was identified as the threshold for clinically significant posttraumatic stress disorder (PTSD) symptoms. Overall, the results indicate that the K-PC-PTSD-5 is a useful, timesaving instrument for screening PTSD symptoms.
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Affiliation(s)
- Young-Eun Jung
- Department of Psychiatry, Jeju National University School of Medicine, Jeju, Korea
| | - Daeho Kim
- Department of Psychiatry, Hanyang University College of Medicine, Seoul, Korea
| | - Won-Hyoung Kim
- Department of Psychiatry, Inha University Hospital, Incheon, Korea
| | - Daeyoung Roh
- Mind-Neuromodulation Laboratory and Department of Psychiatry, Hallym University College of Medicine, Chuncheon, Korea
| | - Jeong-Ho Chae
- Department of Psychiatry, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, Korea
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Kim KS, Kang SY, Park CK, Kim GA, Park SY, Cho H, Seo CW, Lee DY, Lim HW, Lee HW, Park JE, Woo TH, Oh JE. A Compressed-Sensing Based Blind Deconvolution Method for Image Deblurring in Dental Cone-Beam Computed Tomography. J Digit Imaging 2018; 32:478-488. [PMID: 30238344 DOI: 10.1007/s10278-018-0120-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
In cone-beam computed tomography (CBCT), reconstructed images are inherently degraded, restricting its image performance, due mainly to imperfections in the imaging process resulting from detector resolution, noise, X-ray tube's focal spot, and reconstruction procedure as well. Thus, the recovery of CBCT images from their degraded version is essential for improving image quality. In this study, we investigated a compressed-sensing (CS)-based blind deconvolution method to solve the blurring problem in CBCT where both the image to be recovered and the blur kernel (or point-spread function) of the imaging system are simultaneously recursively identified. We implemented the proposed algorithm and performed a systematic simulation and experiment to demonstrate the feasibility of using the algorithm for image deblurring in dental CBCT. In the experiment, we used a commercially available dental CBCT system that consisted of an X-ray tube, which was operated at 90 kVp and 5 mA, and a CMOS flat-panel detector with a 200-μm pixel size. The image characteristics were quantitatively investigated in terms of the image intensity, the root-mean-square error, the contrast-to-noise ratio, and the noise power spectrum. The results indicate that our proposed method effectively reduced the image blur in dental CBCT, excluding repetitious measurement of the system's blur kernel.
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Affiliation(s)
- K S Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Kang
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - C K Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - G A Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Hyosung Cho
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
| | - C W Seo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - D Y Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - T H Woo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Oh
- Division of Convergence Technology, National Cancer Center, Goyang, 10408, Republic of Korea
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Lee B, Park JE, Bjørnerud A, Kim JH, Lee JY, Kim HS. Clinical Value of Vascular Permeability Estimates Using Dynamic Susceptibility Contrast MRI: Improved Diagnostic Performance in Distinguishing Hypervascular Primary CNS Lymphoma from Glioblastoma. AJNR Am J Neuroradiol 2018; 39:1415-1422. [PMID: 30026384 DOI: 10.3174/ajnr.a5732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 05/01/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE A small subset of primary central nervous system lymphomas exhibits high cerebral blood volume, which is indistinguishable from that in glioblastoma on dynamic susceptibility contrast MR imaging. Our study aimed to test whether estimates of combined perfusion and vascular permeability metrics derived from DSC-MR imaging can improve the diagnostic performance in differentiating hypervascular primary central nervous system lymphoma from glioblastoma. MATERIALS AND METHODS A total of 119 patients (with 30 primary central nervous system lymphomas and 89 glioblastomas) exhibited hypervascular foci using the reference method of leakage-corrected CBV (reference-normalized CBV). An alternative postprocessing method used the tissue residue function to calculate vascular permeability (extraction fraction), leakage-corrected CBV, cerebral blood flow, and mean transit time. Parameters were compared using Mann-Whitney U tests, and the diagnostic performance to distinguish primary central nervous system lymphoma from glioblastoma was calculated using the area under the curve from the receiver operating characteristic curve and was cross-validated with bootstrapping. RESULTS Hypervascular primary central nervous system lymphoma showed similar leakage-corrected normalized CBV and leakage-corrected CBV compared with glioblastoma (P > .05); however, primary central nervous system lymphoma exhibited a significantly higher extraction fraction (P < .001) and CBF (P = .01) and shorter MTT (P < .001) than glioblastoma. The extraction fraction showed the highest diagnostic performance (the area under the receiver operating characteristic curve [AUC], 0.78; 95% confidence interval, 0.69-0.85) for distinguishing hypervascular primary central nervous system lymphoma from glioblastoma, with a significantly higher performance than both CBV (AUC, 0.53-0.59, largest P = .02) and CBF (AUC, 0.72) and MTT (AUC, 0.71). CONCLUSIONS Estimation of vascular permeability with DSC-MR imaging further characterizes hypervascular primary central nervous system lymphoma and improves diagnostic performance in glioblastoma differentiation.
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Affiliation(s)
- B Lee
- From the Department of Radiology (B.L.), Seoul Metropolitan Government-Seoul National University, Boramae Medical Center, Seoul, Korea
| | - J E Park
- Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - A Bjørnerud
- Department of Diagnostic Physics (A.B.), Rikshopitalet University Hospital, Oslo, Norway
| | - J H Kim
- NordicNeuroLab (J.H.K.), Seoul, Korea
| | - J Y Lee
- Department of Radiology (J.Y.L.), Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - H S Kim
- Department of Radiology and Research Institute of Radiology (J.E.P., H.S.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Jo SJ, Na KS, Park JE, Lee MS. Decision Making Regarding Key Elements of Korean Disaster Psychiatric Assistance Teams Using the Analytic Hierarchy Process. Psychiatry Investig 2018; 15:663-669. [PMID: 29945429 PMCID: PMC6056699 DOI: 10.30773/pi.2018.01.13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/26/2017] [Accepted: 01/13/2018] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE The purpose of this study was to determine the key components of Korean disaster psychiatric assistant teams (K-DPATs), to set up new mental health service providing system for the disaster victims. METHODS We conducted an analytic hierarchy process (AHP) involving disaster mental health experts, using a pairwise comparison questionnaire to compare the relative importance of the key components of the Korean disaster mental health response system. In total, 41 experts completed the first online survey; of these, 36 completed the second survey. Ten experts participated in panel meetings and discussed the results of the survey and AHP process. RESULTS It was agreed that K-DPATs should be independent of the existing mental health system (70.1%), funding for K-DPATs should be provided by the Ministry of Public Safety, and the system should be managed by the Ministry of Health (65.8%). Experts shared the view that K-DPAT leaders would be suitable key decision makers for all types of disaster, with the exception of those involving infectious diseases. CONCLUSION K-DPAT, a new model for disaster mental health response systems could improve the insufficiency of the current system, address problems such as fragmentation, and fulfill disaster victims' unmet need for early professional intervention.
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Affiliation(s)
- Sun-Jin Jo
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kyoung-Sae Na
- Department of Psychiatry, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, Republic of Korea
| | - Myung-Soo Lee
- Deptartment of Psychiatry, Yong-in Mental Hospital, Yongin, Republic of Korea
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Park JE, Kim MH. Happiness and anguish made by the welfare state: work and health of caregivers. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx186.346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- JE Park
- People's Health Institute, Seoul, South Korea
| | - MH Kim
- People's Health Institute, Seoul, South Korea
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Park JE, Lee JY, Kang SH, Choi JH, Kim TY, So HS, Yoon IY. Heart rate variability of chronic posttraumatic stress disorder in the Korean veterans. Psychiatry Res 2017; 255:72-77. [PMID: 28528244 DOI: 10.1016/j.psychres.2017.05.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 04/12/2017] [Accepted: 05/07/2017] [Indexed: 11/18/2022]
Abstract
Patients with post-traumatic stress disorder (PTSD) have lower heart rate variability (HRV) than the general population, but findings in this area have been inconsistent. This study was conducted to investigate the characteristics of HRV in patients with PTSD and to evaluate associations between PTSD symptoms and HRV indices. Sixty-eight patients with PTSD and 73 controls without PTSD were evaluated. HRV was measured in all subjects after they completed self-reported questionnaires. Patients with PTSD had significantly more depressed moods, anxiety, and poorer sleep quality than individuals in the non-PTSD group. Standard deviations of NN intervals (SDNN), the square root of the mean squared differences of successive NN intervals (RMSSD), and log high-frequency (LNHF) were significantly lower in the PTSD group than in the non-PTSD group. Comparisons of HRV indices among four sub-groups according to presence/absence of PTSD and experiences of combat-related or other trauma indicated that individuals in the PTSD group who had experienced combat-related trauma had the lowest HRV indices. These indices included SDNN, RMSSD, and LNHF. Further, SDNN, RMSSD, and HF power were significantly associated with symptoms of hyperarousal. HRV measures might be useful physiological parameters in assessing and monitoring sympathovagal function in patients with PTSD.
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Affiliation(s)
- Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, South Korea
| | - Ji Yeon Lee
- Department of Psychiatry, Veteran Health Service Medical Center, Seoul, South Korea
| | - Suk-Hoon Kang
- Department of Psychiatry, Veteran Health Service Medical Center, Seoul, South Korea; Center for Sleep Medicine, Veteran Health Service Medical Center, Seoul, South Korea.
| | - Jin Hee Choi
- Department of Psychiatry, Keyo Hospital, Uiwang, South Korea
| | - Tae Yong Kim
- Department of Psychiatry, Keyo Hospital, Uiwang, South Korea
| | - Hyung Seok So
- Department of Psychiatry, Keyo Hospital, Uiwang, South Korea; Posttraumatic Stress Disorder Clinic, Veteran Health Service Medical Center, Seoul, South Korea
| | - In-Young Yoon
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Gyeonggi-do, South Korea
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Park JE, Lee JH, Ryu KH, Park HS, Chung MS, Kim HW, Choi YJ, Baek JH. Improved Diagnostic Accuracy Using Arterial Phase CT for Lateral Cervical Lymph Node Metastasis from Papillary Thyroid Cancer. AJNR Am J Neuroradiol 2017; 38:782-788. [PMID: 28126748 DOI: 10.3174/ajnr.a5054] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Accepted: 11/05/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND PURPOSE Contrast-enhanced CT protocols for papillary thyroid cancer are yet to be optimized. Our aim was to compare the diagnostic accuracy of arterial phase CT and delayed-phase CT protocols for lateral cervical lymph node metastasis from papillary thyroid carcinoma by using the lymph node tissue attenuation. MATERIALS AND METHODS This retrospective study included 327 lateral cervical lymph nodes (177 metastatic and 150 benign) from 131 patients with papillary thyroid carcinoma (107 initially diagnosed and 24 recurrences). Patients underwent CT by using 1 of 3 protocols: a 70-second (A) or a 35-second (B) delay with 100 mL of iodinated IV contrast or a 25-second delay with 75 mL of IV contrast (C). Two readers independently measured and compared lymph node tissue attenuation between metastatic and benign lymph nodes. An area under the receiver operating characteristic curve analysis was performed to differentiate metastatic and benign lymph nodes after multiple comparison correction for clustered data and was compared across the protocols. RESULTS The difference in mean lymph node tissue attenuation between metastatic and benign lymph nodes was maximum in protocol C (P < .001 for both readers). Protocol C showed the highest diagnostic performance (area under the receiver operating characteristic curve, 0.88-0.92) compared with protocol A (area under the receiver operating characteristic curve, 0.73-0.74, P < .001 for both readers) and B (area under the receiver operating characteristic curve, .63-0.65, P < .01 for both readers). The sensitivity, specificity, positive predictive value, and negative predictive value of lymph node tissue attenuation by using a 99-HU cutoff value were 83%-87%, 93.7%-97.9%, 95.1%-97.3%, and 81.2%-87%. CONCLUSIONS A combination of 25-second delay CT and 75 mL of iodinated IV contrast can improve the diagnostic accuracy for lateral lymph node metastasis from papillary thyroid carcinoma compared with a combination of a 35- or 70-second delay with 100-mL of iodinated IV contrast.
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Affiliation(s)
- J E Park
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J H Lee
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
| | - K H Ryu
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - H S Park
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - M S Chung
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - H W Kim
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Y J Choi
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - J H Baek
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Hong T, Park JE, Ling F, terBrugge KG, Tymianski M, Zhang HQ, Krings T. Comparison of 3 Different Types of Spinal Arteriovenous Shunts below the Conus in Clinical Presentation, Radiologic Findings, and Outcomes. AJNR Am J Neuroradiol 2016; 38:403-409. [PMID: 27884878 DOI: 10.3174/ajnr.a5001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 09/06/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Spinal arteriovenous shunts below the conus constitute 3 types of lesions, which have previously been mainly described in case reports, given their rarity, and are sometimes misdiagnosed. The purpose of this study was to describe the features of each type and compare these types as to epidemiologic features, clinical and radiologic presentations, treatment, and outcomes in a consecutive series of 48 cases. MATERIALS AND METHODS The prospectively collected data bases of 2 referral centers for spinal vascular lesions were retrospectively reviewed. Spinal arteriovenous shunts below the conus were defined as all dural and intradural shunts below the conus medullaris. Clinical features, radiologic findings, treatment results, and clinical outcomes were assessed. RESULTS There were filum terminale arteriovenous fistulas in 11 patients (22.9%), radicular arteriovenous shunts in 7 patients (14.6%), and spinal dural arteriovenous fistulas in 30 patients (62.5%). Radicular arteriovenous shunts presented at a younger age (P = .017) and with a higher incidence of back pain symptoms (P = .037). A tethered spinal cord was found in 54.5% of patients with filum terminale arteriovenous fistulas and 23.3% of patients with spinal dural arteriovenous fistulas. After treatment, the angiographic complete obliteration rate was 89.4% and spinal function was improved significantly (P < .001). CONCLUSIONS Three groups of spinal arteriovenous shunts below the conus can be differentiated according to clinical and radiologic features. Filum terminale arteriovenous fistulas are frequently associated with dysraphic malformations, which may suggest a particular embryologic origin.
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Affiliation(s)
- T Hong
- From the Department of Neurosurgery (T.H., F.L., H.Q.Z.), Xuanwu Hospital, Capital Medical University, Beijing, China
| | - J E Park
- Department of Radiology and Research Institute of Radiology (J.E.P.), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - F Ling
- From the Department of Neurosurgery (T.H., F.L., H.Q.Z.), Xuanwu Hospital, Capital Medical University, Beijing, China
| | | | - M Tymianski
- Division of Neurosurgery (M.T.), Toronto Western Hospital, University of Toronto, Ontario, Canada
| | - H Q Zhang
- From the Department of Neurosurgery (T.H., F.L., H.Q.Z.), Xuanwu Hospital, Capital Medical University, Beijing, China
| | - T Krings
- Department of Medical Imaging (K.G.T., T.K.)
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Kang SH, Park JE. P4‐253: Subjective Memory Complaints and Symptoms of Nightmare in Elderly With Chronic PTSD. Alzheimers Dement 2016. [DOI: 10.1016/j.jalz.2016.06.2347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Suk-Hoon Kang
- Veterans Hospital Service Medical CenterSeoulRepublic of Korea
- Graduate School of Yonsei UniversitySeoulRepublic of Korea
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Woo YS, Park JE, Kim DH, Sohn I, Hwang TY, Park YM, Jon DI, Jeong JH, Bahk WM. Blonanserin Augmentation of Atypical Antipsychotics in Patients with Schizophrenia-Who Benefits from Blonanserin Augmentation?: An Open-Label, Prospective, Multicenter Study. Psychiatry Investig 2016; 13:458-67. [PMID: 27482249 PMCID: PMC4965658 DOI: 10.4306/pi.2016.13.4.458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/12/2016] [Accepted: 03/07/2016] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The purpose of this study was to investigate the efficacy and tolerability of atypical antipsychotics (AAPs) with augmentation by blonanserin in schizophrenic patients. METHODS aA total of 100 patients with schizophrenia who were partially or completely unresponsive to treatment with an AAP were recruited in this 12-week, open-label, non-comparative, multicenter study. Blonanserin was added to their existing AAP regimen, which was maintained during the study period. Efficacy was primarily evaluated using the Positive and Negative Syndrome Scale (PANSS) at baseline and at weeks 2, 4, 8, and 12. Predictors for PANSS response (≥20% reduction) were investigated. RESULTS The PANSS total score was significantly decreased at 12 weeks of blonanserin augmentation (-21.0±18.1, F=105.849, p<0.001). Moreover, 51.0% of participants experienced a response at week 12. Premature discontinuation of blonanserin occurred in 17 patients (17.0%); 4 of these patients dropped out due to adverse events. The patients who benefited the most from blonanserin were those with severe symptoms despite a treatment with a higher dose of AAP. CONCLUSION Blonanserin augmentation could be an effective strategy for patients with schizophrenia who were partially or completely unresponsive to treatment with an AAP.
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Affiliation(s)
- Young Sup Woo
- Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Keyo Medical Foundation, Uiwang, Republic of Korea
| | - Do-Hoon Kim
- Department of Psychiatry, Hallym University Medical Center, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - Inki Sohn
- Department of Psychiatry, Keyo Hospital, Keyo Medical Foundation, Uiwang, Republic of Korea
| | - Tae-Yeon Hwang
- WHO Collaborating Center of Yongin Mental Hospital, Yongin, Republic of Korea
| | - Young-Min Park
- Department of Psychiatry, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Republic of Korea
| | - Duk-In Jon
- Department of Psychiatry, College of Medicine, Hallym University, Anyang, Republic of Korea
| | - Jong-Hyun Jeong
- Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Won-Myong Bahk
- Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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22
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Chang JH, Kim D, Jang E, Park JE, Bae H, Han CW, Kim SH. Reliability and Validity of the Korean Version of the Symptom Checklist-Post-Traumatic Stress Disorder Scale. J Korean Med Sci 2016; 31:777-82. [PMID: 27134501 PMCID: PMC4835605 DOI: 10.3346/jkms.2016.31.5.777] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 02/01/2016] [Indexed: 11/29/2022] Open
Abstract
The Symptom Checklist - Post-Traumatic Stress Disorder Scale (SCL-PTSD), also known as Crime-Related PTSD Scale has been validated in survivors of interpersonal trauma in the general population. However, the psychometric properties have not been investigated in a clinical setting for patients with PTSD from diverse traumatic events. This study investigates the reliability and validity of the Korean version of the SCL-PTSD among 104 psychiatric outpatients with PTSD, caused by interpersonal (n = 50) or non-interpersonal trauma (n = 54). Self-report data of the SCL-PTSD, Beck Depression Inventory (BDI), State-Trait Anxiety Inventory (STAI), and Impact of Events Scale-Revised (IES-R) were gathered. The Korean version of the SCL-PTSD showed excellent internal consistency and moderate-to-good four-week temporal stability in both the interpersonal and non-interpersonal trauma groups. In comparison with other diagnostic groups, the scores of the SCL-PTSD were significantly higher compared to those of adjustment disorder, depression, other anxiety disorders, and schizophrenia, demonstrating its criteria-related validity. Convergent validity was confirmed because the scores of the SCL-PTSD were significantly correlated with BDI, SAI and TAI scores. Concurrent validity was demonstrated by significant correlation with the IES-R score. This study demonstrated the favorable psychometric prosperities of the Korean version of the SCL-PTSD, supporting its use in clinical research and practice.
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Affiliation(s)
- Jae Hyeok Chang
- Department of Psychiatry and Mental Health Research Institute, College of Medicine, Hanyang University, Seoul, Korea
| | - Daeho Kim
- Department of Psychiatry and Mental Health Research Institute, College of Medicine, Hanyang University, Seoul, Korea
- Trauma and Stress Program, Hanyang University Guri Hospital, Guri, Korea
| | - Eonyoung Jang
- Department of Psychiatry and Mental Health Research Institute, College of Medicine, Hanyang University, Seoul, Korea
- Trauma and Stress Program, Hanyang University Guri Hospital, Guri, Korea
| | - Joo Eon Park
- Department of Psychiatry, Keyo Hospital, Uiwang, Korea
| | - Hwallip Bae
- Department of Psychiatry, Seonam University Myongji Hospital, Goyang, Korea
| | - Chang Woo Han
- Department of Psychiatry and Mental Health Research Institute, College of Medicine, Hanyang University, Seoul, Korea
| | - Seok Hyeon Kim
- Department of Psychiatry and Mental Health Research Institute, College of Medicine, Hanyang University, Seoul, Korea
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Lee YS, Lee JW, Lee J, Min NE, Park JE, Jung JW, Park DI, Kim KD, Ahn HJ, Choi JW, Park YH, Ryu S, Jeong WJ, Moon JY. The usefulness of modified national early warning score with the age level in critically ill medical patients. Intensive Care Med Exp 2015. [PMCID: PMC4797895 DOI: 10.1186/2197-425x-3-s1-a834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Jang IK, Yoon HH, Yang MS, Lee JE, Lee DH, Lee MW, Kim DS, Park JE. B7-H1 inhibits T cell proliferation through MHC class II in human mesenchymal stem cells. Transplant Proc 2015; 46:1638-41. [PMID: 24935340 DOI: 10.1016/j.transproceed.2013.12.059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/16/2013] [Indexed: 12/26/2022]
Abstract
B7-H1 on mesenchymal stem cells (MSCs) is known to modulate immune response. However, its expression pattern and exact immunomodulatory mechanism are unclear. In this study, we examined the immunomodulatory mechanism through the expression pattern of B7-H1 and major histocompatibility complex class II in various MSCs. Human bone marrow, adipose tissue, and cord blood MSCs were isolated and cultured. B7-H1, HLA-ABC, and HLA-DR expression on MSCs by interferon-γ (IFN-γ) was detected time-dependently by flow cytometry. The inhibitory effect of MSCs on T lymphocytes was observed in phytohemagglutinin antigen-induced T cell proliferation assay. The expression of B7-H1 was rapidly induced, but the expression of HLA-DR was induced at 48 hours after IFN-γ treatment. The inhibitory effect of MSCs on T cell proliferation could be restored when the anti-B7-H1 monoclonal antibody was used to block the B7-H1, or when the HLA-DRα small interfering RNA was used to interfere with its expression. These results show that MSCs could inhibit the T cell proliferation and activation by B7-H1 depending on the presence of HLA-DR. Therefore, MSCs would have a strong effect on immune diseases such as graft-versus-host disease and autoimmune diseases when MSCs are primed with IFN-γ 48 hours before transplantation.
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Affiliation(s)
- I K Jang
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Republic of Korea; Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - H H Yoon
- Dongguk University Research Institute of Biotechnology, Dongguk University, Seoul, Republic of Korea
| | - M S Yang
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - J E Lee
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - D-H Lee
- Biomedical Research Institute, Lifeliver Co Ltd, Yongin, Republic of Korea
| | - M W Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D S Kim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J E Park
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Republic of Korea.
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Cho YC, Park JE, Park BC, Kim JH, Jeong DG, Park SG, Cho S. Cell cycle-dependent Cdc25C phosphatase determines cell survival by regulating apoptosis signal-regulating kinase 1. Cell Death Differ 2015; 22:1605-17. [PMID: 25633196 DOI: 10.1038/cdd.2015.2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/16/2014] [Accepted: 11/17/2014] [Indexed: 11/09/2022] Open
Abstract
Cdc25C (cell division cycle 25C) phosphatase triggers entry into mitosis in the cell cycle by dephosphorylating cyclin B-Cdk1. Cdc25C exhibits basal phosphatase activity during interphase and then becomes activated at the G2/M transition after hyperphosphorylation on multiple sites and dissociation from 14-3-3. Although the role of Cdc25C in mitosis has been extensively studied, its function in interphase remains elusive. Here, we show that during interphase Cdc25C suppresses apoptosis signal-regulating kinase 1 (ASK1), a member of mitogen-activated protein (MAP) kinase kinase kinase family that mediates apoptosis. Cdc25C phosphatase dephosphorylates phospho-Thr-838 in the activation loop of ASK1 in vitro and in interphase cells. In addition, knockdown of Cdc25C increases the activity of ASK1 and ASK1 downstream targets in interphase cells, and overexpression of Cdc25C inhibits ASK1-mediated apoptosis, suggesting that Cdc25C binds to and negatively regulates ASK1. Furthermore, we showed that ASK1 kinase activity correlated with Cdc25C activation during mitotic arrest and enhanced ASK1 activity in the presence of activated Cdc25C resulted from the weak association between ASK1 and Cdc25C. In cells synchronized in mitosis following nocodazole treatment, phosphorylation of Thr-838 in the activation loop of ASK1 increased. Compared with hypophosphorylated Cdc25C, which exhibited basal phosphatase activity in interphase, hyperphosphorylated Cdc25C exhibited enhanced phosphatase activity during mitotic arrest, but had significantly reduced affinity to ASK1, suggesting that enhanced ASK1 activity in mitosis was due to reduced binding of hyperphosphorylated Cdc25C to ASK1. These findings suggest that Cdc25C negatively regulates proapoptotic ASK1 in a cell cycle-dependent manner and may play a role in G2/M checkpoint-mediated apoptosis.
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Affiliation(s)
- Y-C Cho
- College of Pharmacy, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - J E Park
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - B C Park
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - J-H Kim
- Targeted Gene Regulation Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-333, Republic of Korea
| | - D G Jeong
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - S G Park
- Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
| | - S Cho
- College of Pharmacy, Chung-Ang University, Seoul 156-756, Republic of Korea
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Kim JM, Jo YY, Na SW, Kim SI, Choi YS, Kim NO, Park JE, Koh SO. The predictors for continuous renal replacement therapy in liver transplant recipients. Transplant Proc 2015; 46:184-91. [PMID: 24507049 DOI: 10.1016/j.transproceed.2013.07.075] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 07/13/2013] [Accepted: 07/30/2013] [Indexed: 12/23/2022]
Abstract
BACKGROUND Acute renal failure (ARF) after liver transplantation requiring continuous renal replacement therapy (CRRT) adversely affects patient survival. We suggested that postoperative renal failure can be predicted if a clinically simple nomogram can be developed, thus selecting potential risk factors for preventive strategy. METHODS We retrospectively reviewed the medical records of 153 liver transplant recipients from January 2008 to December 2011 at Severance Hospital, Yonsei University Health System, in Seoul, Korea. There were 42 patients treated with CRRT (20 and 22 patients received transplants from living and deceased donors, respectively) and 115 were not. Univariate and stepwise logistic multivariate analyses were performed. A clinical nomogram to predict postoperative CRRT application was constructed and validated internally. RESULTS Hepatic encephalopathy (HEP; odds ratio OR, 5.47), deceased donor liver donations (OR, 3.47), Model for End-Stage Liver Disease (MELD) score (OR, 1.09), intraoperative blood loss (L; OR, 1.16), and tumor (hepatocellular carcinoma) as the indication for liver transplantation (OR, 0.11) were identified as independent predictive factors for postoperative CRRT on multivariate analysis. A clinical prediction model constructed for calculating the probability of CRRT post-transplantation was 1.7000 × HEP + [-4.5427 + 1.2440 × (deceased donor) + 0.0830 × (MELD score) + 0.000149 × the amount of intraoperative bleeding (L) - 2.1785 × tumor]. The validation set discriminated well with an area under the curve (AUC) of 0.90 (95% confidence interval, 0.85-0.95). The predicted and the actual probabilities were calibrated with the clinical nomogram. CONCLUSIONS We developed a predictive model of postoperative CRRT in liver transplantation patients. Perioperative strategies to modify these factors are needed.
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Affiliation(s)
- J M Kim
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Y Y Jo
- Department of Anesthesia and Pain Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - S W Na
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - S I Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Y S Choi
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - N O Kim
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - J E Park
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - S O Koh
- Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.
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Paudel S, Park JE, Jang H, Shin HJ. Comparison of serum neutralization and enzyme-linked immunosorbent assay on sera from porcine epidemic diarrhea virus vaccinated pigs. Vet Q 2014; 34:218-23. [PMID: 25415042 DOI: 10.1080/01652176.2014.979512] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 10/24/2022] Open
Abstract
BACKGROUND Porcine epidemic diarrhea virus (PEDV) is an economically important pathogen of swine. OBJECTIVE Serum neutralization (SN) and enzyme-linked immunosorbent assay (ELISA) test results as well as the utility of spike proteins S1, S2, and S3 and entire nucleocapsid protein were compared. ANIMALS AND METHODS Serum samples from 400 pigs vaccinated against PEDV strain SM98P were collected from 78 farms in Korea. SN test and ELISA were performed to confirm the presence of antibodies. For prokaryotic expression of partial fragments of spike protein the size and location of S1, S2, and S3, and full nucleocapsid protein, polymerase chain reaction was performed using specific primers. RESULTS Comparison of these results demonstrated that there was a correlation between the SN and ELISA results. Sera with higher neutralizing activity also had higher IgG titer. The antibody profiling data presented the correlation of neutralizing activity with the level of spike protein antibody. In particular, the S3 region may have an important role in neutralizing activity. CONCLUSIONS We confirmed that the carboxy-terminal region that includes the endodomain of the S protein induced stronger neutralizing activity than the region that includes the ectodomain. CLINICAL RELEVANCE The region of the S protein may have a stronger neutralizing KPEDV-9 epitope and could be useful for the evaluation of future PEDV vaccine efficacy.
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Affiliation(s)
- S Paudel
- a Laboratory of Infectious Disease, College of Veterinary Medicine , Chungnam National University , Daejeon , South Korea
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Paudel S, Park JE, Jang H, Hyun BH, Yang DG, Shin HJ. Evaluation of antibody response of killed and live vaccines against porcine epidemic diarrhea virus in a field study. Vet Q 2014; 34:194-200. [PMID: 25398090 DOI: 10.1080/01652176.2014.973999] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Porcine epidemic diarrhea virus (PEDV) is an infectious, highly contagious virus, and is an etiological agent of acute entero-pathogenic diarrhea in swine. OBJECTIVES Evaluation of the antibody response of two types of PEDV vaccines is to be carried out. ANIMALS AND METHODS Sows were vaccinated with either live or killed commercial PEDV SM98 (GenBank: GU937797.1) vaccines. Four different groups of sows with five sows in each group were used in this study: the unvaccinated negative control group, the killed virus vaccination group with killed virus boosting (K/K), the live virus vaccinated group with live virus boosting (L/L), and the combination group vaccinated with live virus and subsequently boosted with killed vaccine (L/K). Sows were vaccinated intramuscularly twice at four and two weeks prior to farrowing with 2ml/head vaccine dose. Antibody titers in sow and piglet serum one week after farrowing and that in colostrum were compared by enzyme-linked immunosorbent assay (ELISA) and serum neutralization test. RESULTS Vaccination with K/K vaccine induced the highest level of IgG and IgA in sow serum, colostrum, and especially in piglet serum, with the lowest levels found in the L/L group. The major neutralizing activity was also found in the K/K group, particularly in colostrum, with piglets bearing higher neutralizing activity compared to sow sera. Among recombinant spike S1, S2, S3, and nucleocapsid N protein of PEDV, S3 protein presented the highest antibody level in the K/K group. CONCLUSION Killed PEDV SM98 vaccine induced higher antibody levels. CLINICAL IMPORTANCE This study clearly confirms that killed vaccine has induced higher antibody levels and may contribute to the design of future research and vaccine programs.
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Affiliation(s)
- S Paudel
- a Laboratory of Infectious Disease, College of Veterinary Medicine , Chungnam National University , Daejeon , Korea
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29
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Park HJ, Park M, Han M, Nam BH, Koh KN, Im HJ, Lee JW, Chung NG, Cho B, Kim HK, Yoo KH, Koo HH, Kang HJ, Shin HY, Ahn HS, Lim YT, Kook H, Lyu CJ, Hah JO, Park JE, Lim YJ, Seo JJ. Efficacy and safety of micafungin for the prophylaxis of invasive fungal infection during neutropenia in children and adolescents undergoing allogeneic hematopoietic SCT. Bone Marrow Transplant 2014; 49:1212-6. [PMID: 25000455 DOI: 10.1038/bmt.2014.136] [Citation(s) in RCA: 14] [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] [Received: 12/31/2013] [Revised: 05/12/2014] [Accepted: 05/18/2014] [Indexed: 11/09/2022]
Abstract
The objective of this study was to evaluate the efficacy and safety of micafungin for the prevention of invasive fungal infection (IFI) during the neutropenic phase of allogeneic hematopoietic SCT (allo-HSCT) in children and adolescents. This was a prospective, multicenter, open-label, single-arm study. Micafungin was administered i.v. at a dose of 1 mg/kg/day (max 50 mg) from the beginning of conditioning until neutrophil engraftment. Treatment success was defined as the absence of proven, probable, possible or suspected IFI through to 4 weeks after therapy. From April 2010 to December 2011, 155 patients were enrolled from 11 institutions in Korea, and 147 patients were analyzed. Of the 147 patients, 121 (82.3%) completed the protocol without premature interruption. Of the 132 patients in whom micafungin efficacy could be evaluated, treatment success was achieved in 119 patients (90.2%). There was no proven fungal infection in any patient. The number of patients with probable, possible and suspected IFI was two, two and nine, respectively. Thirty-five patients (23.8%) experienced 109 adverse events (AEs) possibly related to micafungin. No patients experienced grade IV AEs. Two patients (1.4%) discontinued micafungin administration due to adverse effects. None of the deaths were related to the study drug.
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Affiliation(s)
- H J Park
- Center for Pediatric Oncology, National Cancer Center, Goyang-si, Republic of Korea
| | - M Park
- Department of Pediatrics, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - M Han
- Clinical Research Center, National Cancer Center, Goyang-si, Republic of Korea
| | - B H Nam
- Clinical Research Center, National Cancer Center, Goyang-si, Republic of Korea
| | - K N Koh
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H J Im
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J W Lee
- Department of Pediatrics, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - N-G Chung
- Department of Pediatrics, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - B Cho
- Department of Pediatrics, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - H-K Kim
- Department of Pediatrics, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - K H Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H H Koo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H J Kang
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H Y Shin
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H S Ahn
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Y T Lim
- Department of Pediatrics, Pusan National University College of Medicine, Busan, Republic of Korea
| | - H Kook
- Department of Pediatrics, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - C J Lyu
- Department of Pediatrics, Yonsei University, College of Medicine, Seoul, Republic of Korea
| | - J O Hah
- Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Republic of Korea
| | - J E Park
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Y J Lim
- Department of Pediatrics, Chungnam National University School of Medicine, Daejon, Republic of Korea
| | - J J Seo
- Department of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Park JK, Kang TG, Kang MY, Park JE, Cho IA, Shin JK, Choi WJ, Lee SA, Choi WS, Kwon HM, Lee JH, Paik WY. Increased NFAT5 expression stimulates transcription of Hsp70 in preeclamptic placentas. Placenta 2013; 35:109-16. [PMID: 24398013 DOI: 10.1016/j.placenta.2013.12.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 12/10/2013] [Accepted: 12/13/2013] [Indexed: 01/25/2023]
Abstract
OBJECTIVE We investigated the expression of heat shock protein 70 (Hsp70), nuclear factor of activated T cells 5 (NFAT5), and hypoxia-induced factor-1α (HIF-1α) in the placentas of normal and preeclamptic pregnancies and in human placental hypoxia models in vitro to examine the regulatory mechanisms of placental Hsp70 expression. METHODS The expression levels of HIF-1α, NFAT5, and Hsp70 were examined in placental samples from 10 females with preeclampsia and 10 normotensive control patients and in human choriocarcinoma trophoblast cells treated with 1 mM CoCl2 by western blotting. Using models of placental hypoxia, pharmacological inhibition of HIF-1α with chetomin and shRNA knockdown and overexpression of NFAT5 were performed to investigate the roles of HIF-1α and NFAT5 in induction of Hsp70 by placental hypoxia. RESULTS The levels of HIF-1α, NFAT5, and Hsp70 expression were significantly higher in the preeclamptic compared to normal placentas. In the placental hypoxia models, the expression of HIF-1α, NFAT5, and Hsp70 were significantly higher after 3, 6, and 12 h of 1 mM CoCl2 treatment, respectively. Pharmacological inhibition of HIF-1α suppressed the induction of NFAT5 and Hsp70 at the protein level. shRNA knockdown of NFAT5 suppressed the induction of Hsp70 protein and overexpression of NFAT5 stimulated the induction of Hsp70 mRNA and protein in models of human placental hypoxia in vitro. CONCLUSION HIF-1α positively regulates the induction of NFAT5 and Hsp70 by placental hypoxia and NFAT5 stimulates transcription of Hsp70 in response to placental hypoxia in models of human placental hypoxia in vitro.
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Affiliation(s)
- J K Park
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - T G Kang
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - M Y Kang
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - J E Park
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - I A Cho
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - J K Shin
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W J Choi
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - S A Lee
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W S Choi
- Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea; Department of Anatomy, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - H M Kwon
- School of Nano-Bioscience and Chemical Engineering, Ulsan National Institute and Science and Technology, Ulsan, South Korea
| | - J H Lee
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea
| | - W Y Paik
- Department of Obstetrics and Gynecology, School of Medicine, Gyeongsang National University, JinJu, South Korea; Institute of Health Sciences, School of Medicine, Gyeongsang National University, JinJu, South Korea.
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31
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Kim JT, Lee SJ, Kang MA, Park JE, Kim BY, Yoon DY, Yang Y, Lee CH, Yeom YI, Choe YK, Lee HG. Cystatin SN neutralizes the inhibitory effect of cystatin C on cathepsin B activity. Cell Death Dis 2013; 4:e974. [PMID: 24357805 PMCID: PMC3877556 DOI: 10.1038/cddis.2013.485] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 11/03/2013] [Accepted: 11/04/2013] [Indexed: 01/05/2023]
Abstract
Cystatin SN (CST1) is one of the several salivary cystatins that form tight equimolar complexes with cysteine proteases, such as the cathepsins. High expression of CST1 is correlated with advanced pTNM stage in gastric cancer. However, the functional role of CST1 in tumorigenesis has not been elucidated. In this study, we showed that CST1 was highly expressed in colon tumor tissues, compared with nontumor regions. Increased cell proliferation and invasiveness were observed in HCT116 cell lines stably transfected with CST1 cDNA (HCT116-CST1) but not in CST3-transfected cells. We also demonstrated that CST1-overexpressing cell lines exhibited increased tumor growth as well as metastasis in a xenograft nude mouse model. Interestingly, CST1 interacted with cystatin C (CST3), a potent cathepsin B (CTSB) inhibitor, with a higher affinity than the interaction between CST3 and CTSB in the extracellular space of HCT116 cells. CTSB-mediated cellular invasiveness and proteolytic activities were strongly inhibited by CST3, but in the presence of CST1 CTSB activities recovered significantly. Furthermore, domain mapping of CST1 showed that the disulfide-bonded conformation, or conserved folding, of CST1 is important for its secretion and for the neutralization of CST3 activity. These results suggest that CST1 upregulation might be involved in colorectal tumorigenesis and acts by neutralizing the inhibition of CTSB proteolytic activity by CST3.
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Affiliation(s)
- J-T Kim
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - S-J Lee
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - M A Kang
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - J E Park
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - B-Y Kim
- Chemical Biology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - D-Y Yoon
- Department of Bioscience and Biotechnology, Bio/Molecular Informatics Center, Konkuk University, Seoul, Republic of Korea
| | - Y Yang
- Department of Life Science, Sookmyung Women's University, Seoul, Republic of Korea
| | - C-H Lee
- Laboratory Animal Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Y I Yeom
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Y-K Choe
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - H G Lee
- Biomedical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
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Melén E, Granell R, Kogevinas M, Strachan D, Gonzalez JR, Wjst M, Jarvis D, Ege M, Braun-Fahrländer C, Genuneit J, Horak E, Bouzigon E, Demenais F, Kauffmann F, Siroux V, Michel S, von Berg A, Heinzmann A, Kabesch M, Probst-Hensch NM, Curjuric I, Imboden M, Rochat T, Henderson J, Sterne JAC, McArdle WL, Hui J, James AL, William Musk A, Palmer LJ, Becker A, Kozyrskyj AL, Chan-Young M, Park JE, Leung A, Daley D, Freidin MB, Deev IA, Ogorodova LM, Puzyrev VP, Celedón JC, Brehm JM, Cloutier MM, Canino G, Acosta-Pérez E, Soto-Quiros M, Avila L, Bergström A, Magnusson J, Söderhäll C, Kull I, Scholtens S, Marike Boezen H, Koppelman GH, Wijga AH, Marenholz I, Esparza-Gordillo J, Lau S, Lee YA, Standl M, Tiesler CMT, Flexeder C, Heinrich J, Myers RA, Ober C, Nicolae DL, Farrall M, Kumar A, Moffatt MF, Cookson WOCM, Lasky-Su J. Genome-wide association study of body mass index in 23 000 individuals with and without asthma. Clin Exp Allergy 2013; 43:463-74. [PMID: 23517042 DOI: 10.1111/cea.12054] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 09/28/2012] [Accepted: 10/22/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Both asthma and obesity are complex disorders that are influenced by environmental and genetic factors. Shared genetic factors between asthma and obesity have been proposed to partly explain epidemiological findings of co-morbidity between these conditions. OBJECTIVE To identify genetic variants that are associated with body mass index (BMI) in asthmatic children and adults, and to evaluate if there are differences between the genetics of BMI in asthmatics and healthy individuals. METHODS In total, 19 studies contributed with genome-wide analysis study (GWAS) data from more than 23 000 individuals with predominantly European descent, of whom 8165 are asthmatics. RESULTS We report associations between several DENND1B variants (P = 2.2 × 10(-7) for rs4915551) on chromosome 1q31 and BMI from a meta-analysis of GWAS data using 2691 asthmatic children (screening data). The top DENND1B single nucleotide polymorphisms(SNPs) were next evaluated in seven independent replication data sets comprising 2014 asthmatics, and rs4915551 was nominally replicated (P < 0.05) in two of the seven studies and of borderline significance in one (P = 0.059). However, strong evidence of effect heterogeneity was observed and overall, the association between rs4915551 and BMI was not significant in the total replication data set, P = 0.71. Using a random effects model, BMI was overall estimated to increase by 0.30 kg/m(2) (P = 0.01 for combined screening and replication data sets, N = 4705) per additional G allele of this DENND1BSNP. FTO was confirmed as an important gene for adult and childhood BMI regardless of asthma status. CONCLUSIONS AND CLINICAL RELEVANCE DENND1B was recently identified as an asthma susceptibility gene in a GWAS on children, and here, we find evidence that DENND1B variants may also be associated with BMI in asthmatic children. However, the association was overall not replicated in the independent data sets and the heterogeneous effect of DENND1B points to complex associations with the studied diseases that deserve further study.
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Affiliation(s)
- E Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Kim GA, Oh HJ, Park JE, Kim MJ, Park EJ, Jo YK, Jang G, Kim MK, Kim HJ, Lee BC. Species-specific challenges in dog cloning. Reprod Domest Anim 2013; 47 Suppl 6:80-3. [PMID: 23279471 DOI: 10.1111/rda.12035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/06/2012] [Indexed: 11/28/2022]
Abstract
Somatic cell nuclear transfer (SCNT) is now an established procedure used in cloning of several species. SCNT in dogs involves multiple steps including the removal of the nuclear material, injection of a donor cell, fusion, activation of the reconstructed oocytes and finally transfer to a synchronized female recipient. There are therefore many factors that contribute to cloning efficiency. By performing a retrospective analysis of 2005-2012 published papers regarding dog cloning, we define the optimum procedure and summarize the specific feature for dog cloning.
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Affiliation(s)
- G A Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Korea
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Chan K, Patel RS, Newcombe P, Nelson CP, Qasim A, Epstein SE, Burnett S, Vaccarino VL, Zafari AM, Shah SH, Anderson JL, Carlquist JF, Hartiala J, Allayee H, Hinohara K, Lee BS, Erl A, Ellis KL, Goel A, Schaefer AS, Mokhtari NE, Goldstein BA, Hlatky MA, Go AS, Shen GQ, Gong Y, Pepine C, Laxton RC, Wittaker JC, Tang WHW, Johnson JA, Wang QK, Assimes TL, Nöthlings U, Farrall M, Watkins H, Richards AM, Cameron VA, Muendlein A, Drexel H, Koch W, Park JE, Kimura A, Shen WF, Simpson IA, Hazen SL, Horne BD, Hauser ER, Quyyumi AA, Reilly MP, Samani NJ, Ye S. 126 CHROMOSOME 9P21 LOCUS AND ANGIOGRAPHIC CORONARY ARTERY DISEASE BURDEN: A COLLABORATIVE META-ANALYSIS. Heart 2013. [DOI: 10.1136/heartjnl-2013-304019.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Park SJ, Park JE, Shin JI. Systemic lupus erythematosus and hypercalcaemia: comment on the article by TP Karageorgas et al. Scand J Rheumatol 2012; 41:323. [PMID: 22804719 DOI: 10.3109/03009742.2012.673636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Park JE, Choi HJ, Kim IK, Lee HJ, Kang JH, Song J. Influence of serum leptin levels on future overweight risk in Korean children. Nutr Metab Cardiovasc Dis 2012; 22:260-268. [PMID: 21193296 DOI: 10.1016/j.numecd.2010.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 08/27/2010] [Accepted: 08/29/2010] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND AIMS Leptin is an important regulator of energy metabolism. It is considered to be positively related to body adiposity and metabolic disorders in obese adults and children. The purpose of this study was to evaluate the relationship between baseline circulating leptin, insulin and adiponectin levels and future overweight and metabolic risks in a paediatric population-based cohort. METHODS AND RESULTS First-grade students, who entered elementary school at age 7 years in Gwacheon, a Korean city, were enrolled in this cohort study, and followed from 1st grade to 5th grade. Annual physical examinations from 2005 to 2009 were performed. In 2006, the levels of serum glucose, insulin, leptin and adiponectin and lipid profiles were examined. In 2008, the above parameters, except for adiponectin, were measured again in 381 children (202 boys and 179 girls) who participated. In 2006, 10.2% of the children were overweight (body mass index (BMI) ≥ 85th percentile), and after 2 years, an additional 3% became overweight. Compared with insulin and adiponectin, leptin was most highly associated with current and future BMI, and percent body fat. Boys in the highest tertile for initial leptin (T3) showed the highest prevalence of overweight and metabolic risk scores among three leptin tertile groups. Girls showed the same trends as boys. High initial leptin levels could be predictive of greater future BMI and metabolic risk score (p < 0.001). CONCLUSION These results suggest that elevated serum leptin concentrations among the childhood population could be a marker for future BMI and metabolic disorders.
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Affiliation(s)
- J E Park
- Division of Metabolic Diseases, Center for Biomedical Sciences, National Institute of Health, 194 Tongillo, Eunpyeong-gu, Seoul 122-701, Republic of Korea
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Park JE, Yung R, Stefanowicz D, Shumansky K, Akhabir L, Durie PR, Corey M, Zielenski J, Dorfman R, Daley D, Sandford AJ. Cystic fibrosis modifier genes related to Pseudomonas aeruginosa infection. Genes Immun 2011; 12:370-7. [PMID: 21270830 DOI: 10.1038/gene.2011.5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cystic fibrosis (CF) is one of the most common life-shortening genetic disorders, and the CF transmembrane conductance regulator (CFTR) is the major causal gene. However, a substantial clinical variability among patients with identical CFTR genotypes suggests the presence of modifier genes. We tested the effect of four genes involved in Pseudomonas aeruginosa infection. Analysis of a primary cohort detected eight candidate polymorphisms that were genotyped in the secondary cohort of 1579 patients; lung function and age at first infection with P. aeruginosa were considered as the phenotypes. Both additive and codominant models were considered, adjusting for confounding variables but not for multiple comparisons. In the secondary cohort, heme oxygenase-1 (HMOX1) rs2071749 had the most significant effect on lung function in the pediatric group (P=0.01; P(corrected)=0.03), and complement factor 3 (C3) rs11569393 and HMOX1 rs2071746 in the adult groups (P=0.03 for both variants; P(corrected)=0.16, 0.09). No polymorphism of complement factor B (CFB) or toll-like receptor 4 (TLR4) had a significant modifying effect on lung function in either group. We have identified two genes that showed nominal association with disease severity among CF patients. However, because of the multiple comparisons made, further studies are required to confirm the interaction between these modifying genes and CFTR.
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Affiliation(s)
- J E Park
- James Hogg Research Centre, Providence Heart+Lung Institute, St Paul's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
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Kim MJ, Oh HJ, Park JE, Hong SG, Kang JT, Koo OJ, Kang SK, Jang G, Lee BC. Influence of oocyte donor and embryo recipient conditions on cloning efficiency in dogs. Theriogenology 2010; 74:473-8. [PMID: 20452009 DOI: 10.1016/j.theriogenology.2010.03.001] [Citation(s) in RCA: 20] [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] [Received: 10/31/2009] [Revised: 01/26/2010] [Accepted: 03/07/2010] [Indexed: 11/16/2022]
Abstract
To determine factors that affect the efficiency of dog cloning by somatic cell nuclear transfer, the present study was performed to investigate 1) the effects of surgical history (non-operated/operated) and parity (nullipara/multipara) on the recovery of in vivo canine oocytes; 2) the effects of surgical history and parity of recipients on the pregnancy and delivery; and 3) the effects of synchronization state (AA, advanced asynchrony; SY, synchrony; RA, retarded asynchrony) between oocytes donor and recipient on the pregnancy and delivery. Oocyte recovery rate was significantly higher in non-operated dogs compared to operated dogs (93.8 vs. 89.6%, P < 0.05) and not different between nulliparous dogs and multiparous dogs. Delivery rate was also significantly higher in non-operated dogs compared to operated dogs (2.8 vs. 1.0%, P < 0.05) and in nulliparous dogs than multiparous dogs (3.0 vs. 1.7%, P < 0.05). Even though SY showed increased pregnancy and delivery rate (20.0% and 3.0%) compared to AA (15.0% and 2.0%) and RA (0.0% and 0.0%), there was no significant difference. In conclusion, we recommend non-operated dogs as experimental dogs and nulliparous dogs as recipient dogs to increase delivery rate after transfer of somatic cell nuclear transferred embryos, but further study is needed to find out appropriate synchrony status at the transfer.
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Affiliation(s)
- M J Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, 151-742, Korea
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Son JS, Jun SY, Kim EB, Park JE, Paik HR, Yoon SJ, Kang SH, Choi YJ. Complete genome sequence of a newly isolated lytic bacteriophage, EFAP-1 of Enterococcus faecalis, and antibacterial activity of its endolysin EFAL-1. J Appl Microbiol 2009; 108:1769-79. [PMID: 19863688 DOI: 10.1111/j.1365-2672.2009.04576.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
AIMS In this work, we aimed to identify an effective treatment of infections caused by Enterococcus spp. strains resistant to conventional antibiotics. METHODS AND RESULTS We report the isolation and characterization of a new lytic bacteriophage, designated bacteriophage EFAP-1, that is capable of lysing Enterococcus faecalis bacteria that exhibit resistance to multiple antibiotics. EFAP-1 has low sequence similarity to all known bacteriophages. Transmission electron microscopy confirmed that EFAP-1 belongs to the Siphoviridae family. A putative lytic protein of EFAP-1, endolysin EFAL-1, is encoded in ORF 2 and was expressed in Escherichia coli. Recombinant EFAL-1 had broad-spectrum lytic activity against several Gram-positive pathogens, including Ent. faecalis and Enterococcus faecium. CONCLUSIONS The complete genome sequence of the newly isolated enterococcal lytic phage was analysed, and it was demonstrated that its recombinant endolysin had broad lytic activity against various Gram-positive pathogens. SIGNIFICANCE AND IMPACT OF THE STUDY Bacteriophage EFAP-1 and its lytic protein, EFAL-1, can be utilized as potent antimicrobial agents against Enterococcus spp. strains resistant to conventional antibiotics in hospital infections and also as environmental disinfectants to control disease-causing Enterococcus spp. in dairy farms.
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Affiliation(s)
- J S Son
- Laboratory of Animal Cell Biotechnology, Department of Agricultural Biotechnology, Seoul National University, Seoul, Korea
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Hwang JY, Park JE, Choi YJ, Huh KB, Kim WY. SNP276G>T polymorphism in the adiponectin gene is associated with metabolic syndrome in patients with Type II diabetes mellitus in Korea. Eur J Clin Nutr 2009; 64:105-7. [DOI: 10.1038/ejcn.2009.94] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lee JWY, Lee JY, Choi JY, Kim JY, Lee BS, Park JE. Abstract: P154 HMCO5, HERBAL EXTRACT, INHIBITS NEOINTIMA FORMATION IN BALLOON-INJURED RAT CAROTID ARTERY AND POSSIBLE MECHANISM OF INHIBITION. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70461-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Park JE, Oh HJ, Hong SG, Jang G, Kim MK, Lee BC. Effects of activin A on the in vitro development and mRNA expression of bovine embryos cultured in chemically-defined two-step culture medium. Reprod Domest Anim 2008; 45:585-93. [PMID: 19090825 DOI: 10.1111/j.1439-0531.2008.01306.x] [Citation(s) in RCA: 4] [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: 11/29/2022]
Abstract
The purpose of the present study was to evaluate the effects of activin A on the developmental competence of in vitro fertilized (IVF) bovine embryos derived from a two-step defined culture system (C1/C2 medium) during the early or later stages of embryo development. To evaluate the effects of activin A on transcriptional levels, we analysed genes related to blastocyst hatching and implantation and to activin signalling pathway in IVF embryos. Cumulus-oocyte complexes were matured for 22 h and fertilized in vitro. Presumptive zygotes were cultured in the presence or absence of activin A during early (0-120 h, C1) or later (120-192 h, C2) stages. Although the developmental competence of embryos cultured with activin A in C1 medium was not significantly different from their corresponding controls, development to blastocysts (22.4% vs 34.7%; p < 0.05) and the blastocyst hatching rate (9.3% vs 22.4%; p < 0.05) in C2 medium supplemented with 100 ng/ml activin A were significantly higher than in the control group. To evaluate the effect of activin A on transcription, the relative expression levels of genes related to blastocyst hatching and implantation (Na/K-ATPase, E-cad and Glut-1) as well as activin signalling pathway (ActRII, ActRIIB and Smad2) were analysed. Compared to control medium, gene expression of Na/K-ATPase, E-cad, Glut-1, ActRII and ActRIIB was increased in medium supplemented with activin A. In conclusion, this study suggests that activin A, during the later stage of in vitro bovine embryo development, can enhance in vitro development of embryos by increasing hatching rates and affecting expression levels of genes related to hatching and implantation in defined culture medium.
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Affiliation(s)
- J E Park
- Department of Theriogenology and Biotechnology, SeoulNational University, Seoul, Korea
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Jang G, Oh HJ, Kim MK, Fibrianto YH, Hossein MS, Kim HJ, Kim JJ, Hong SG, Park JE, Kang SK, Lee BC. Improvement of canine somatic cell nuclear transfer procedure. Theriogenology 2007; 69:146-54. [PMID: 17949804 DOI: 10.1016/j.theriogenology.2007.08.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Revised: 05/21/2007] [Accepted: 08/08/2007] [Indexed: 10/22/2022]
Abstract
The purpose of the present study on canine somatic cell nuclear transfer (SCNT) was to evaluate the effects of fusion strength, type of activation, culture media and site of transfer on developmental potential of SCNT embryos. We also examined the potential of enucleated bovine oocytes to serve as cytoplast recipients of canine somatic cells. Firstly, we evaluated the morphological characteristics of in vivo-matured canine oocytes collected by retrograde flushing of the oviducts 72 h after ovulation. Secondly, the effectiveness of three electrical strengths (1.8, 2.3 and 3.3 kV/cm), used twice for 20 micros, on fusion of canine cytoplasts with somatic cells were compared. Then, we compared: (1) chemical versus electrical activation (a) after parthenogenetic activation or (b) after reconstruction of canine oocytes with somatic cells; (2) culture of resulting intergeneric (IG) embryos in either (a) mSOF or (b) TCM-199. The exposure time to 6-DMAP was standardized by using bovine oocytes reconstructed with canine somatic cells. Bovine oocytes were used for SCNT after a 22 h in vitro maturation interval. The fusion rate was significantly higher in the 3.3 kV/cm group than in the 1.8 and 2.3 kV/cm treatment groups. After parthenogenesis or SCNT with chemical activation, 3.4 and 5.8%, respectively, of the embryos developed to the morula stage, as compared to none of the embryos produced using electrical activation. Later developmental stages (8-16 cells) were transferred to the uterine horn of eight recipients, but no pregnancy was detected. However, IG cloned embryos (bovine cytoplast/canine somatic cell) were capable of in vitro blastocyst development. In vitro developmental competence of IG cloned embryos was improved after exposure to 6-DMAP for 4 h as compared to 0, 2 or 6h exposure, although the increase was not significantly different among culture media. In summary, for production of canine SCNT embryos, we recommend fusion at 3.3 kV/cm, chemical activation, culture in mSOF medium and transfer of presumptive zygotes to the oviduct of recipient animals. The feasibility of IG production of cloned canine embryos using bovine cytoplasts as recipient of canine somatic cells was demonstrated.
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Affiliation(s)
- G Jang
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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Lee JA, Park JE, Lee DH, Park SG, Myung PK, Park BC, Cho S. G1 to S phase transition protein 1 induces apoptosis signal-regulating kinase 1 activation by dissociating 14-3-3 from ASK1. Oncogene 2007; 27:1297-305. [PMID: 17700517 DOI: 10.1038/sj.onc.1210740] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1), a member of the mitogen-activated protein kinase kinase kinase family, plays a critical role in mediating apoptosis signals initiated by a variety of death stimuli such as hydrogen peroxide and tumor necrosis factor-alpha. Owing to its critical role in inducing apoptosis, the activity of ASK1 is tightly regulated by various mechanisms such as post-translational modifications and protein-protein interactions. Here we describe the identification of G(1) to S phase transition protein 1 (GSPT1), which is associated with protein translation, as a regulator of ASK1. GSPT1 interacts with ASK1 and enhances ASK1-induced apoptotic activity through the activation of caspase-3. In vitro kinase assay data show that GSPT1 enhances ASK1 autophosphorylation and its kinase activity. Cell cycle-dependent GSPT1 induction and small interfering RNA analyses show that ASK1 autophosphorylation is dependent on the expression level of endogenous GSPT1 in cells. GSPT1 inhibits the binding of ASK1 to the 14-3-3 protein, an ASK1 inhibitor, while GSPT1 has no effect on the interaction between ASK1 and TRAF2, a C-terminal-binding activator of ASK1. Thus, our results reveal a novel role of GSPT1 in the regulation of ASK1-mediated apoptosis.
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Affiliation(s)
- J A Lee
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
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Hong EH, Kim MY, Park JE, Lee MH, Oh JM, Shin WG. Efficacy and safety of abciximab in combination with cilostazol in patients undergoing stenting. Int J Clin Pharmacol Ther 2007; 45:355-65. [PMID: 17595893 DOI: 10.5414/cpp45355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To evaluate the short- and long-term efficacy and safety of abciximab and cilostazol in patients with acute MI and unstable angina undergoing intracoronary stenting. METHODS Acute-phase (7 and 30 days), 6-month and long-term composite outcomes involving death, myocardial infarction or urgent target vessel revascularization (TVR) together with other outcomes (composite outcomes involving death, MI and elective TVR with restenosis and stroke) were evaluated retrospectively in a total of 175 patients. Safety outcomes were assessed using data on the incidence of bleeding and thrombocytopenia at Day 7 and Day 30. RESULTS Of 175 patients, 83 (47.4%) patients received abciximab. At 7 and 30 days, the composite outcome for the group treated with cilostazol alone and that treated with abciximab in combination with cilostazol did not differ significantly. The composite outcomes at 6 months and 1 year were significantly lower in the abciximab plus cilostazol group (relative risk 0.35, 95% Cl 0.13 - 0.90, relative risk 0.28, 95% CI 0.10 -0.78, respectively). The incidence of major bleeding at the access-site and in the gastrointestinal tract and minor bleeding were significantly higher in the group receiving abciximab plus cilostazol group at 7 days (relative risk 3.33, 95% CI 1.66 - 6.65, relative risk 9.98, 95% CI 1.29 - 77.07, relative risk 1.96, 95% CI 1.06 - 3.62, respectively) and at 30 days (relative risk 3.33, 95% CI 1.66 - 6.65, relative risk 5.54, 95% CI 1.25 - 24.56, relative risk 1.96, 95% CI 1.06 - 3.62, respectively). CONCLUSION The combination of abciximab and cilostazol showed an improvement in major cardiac incidents at 6 months and 1 year of the treatment when compared to the group receiving cilostazol alone. However, abciximab did not improve the incidence of death but increased the risk of bleeding complications.
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Affiliation(s)
- E H Hong
- Department of Pharmacy, Sejong Hospital, Gyeonggi-do, Korea
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Abstract
BACKGROUND It is well known that a high level of apolipoprotein (apo) A-II can be associated with familial combined hyperlipidaemia, and that high apolipoprotein profiles can contribute to the development of atherosclerosis. The serum lipoprotein/apolipoprotein profile of a Caucasian patient who had unusually low serum total cholesterol (83 mg dL(-1)) and triglyceride (28 mg dL(-1)) levels despite a high body mass index (33.5 kg m(-2)), is the subject of this report. MATERIALS AND METHODS Each lipoprotein was isolated from serum by sequential ultracentrifugation, and serum and lipoprotein lipids and proteins were determined. The cholesteryl ester (CE) conversion ability of lecithin:cholesterol acyltransferase and CE transfer activity of CE transfer protein were assayed, and the composition of apolipoprotein and lipoprotein(-1) was analyzed by electrophoresis and Western blot analysis. RESULTS Electrophoresis and immunodetection analyses revealed a 60% decrease in the apoA-II band intensity compared to normal reference serum. The decreased apoA-II was associated with reduced very low density lipoprotein-cholesterol and protein content, as well as a greater high-density lipoprotein (HDL)(2) size with high cholesterol content. The CE conversion activity and CE transfer activity of HDL(3) were almost totally lacking in the hypolipidaemic serum, although the expression level of lecithin:cholesterol acyltransferase was normal. Electron microscopy revealed that the obese patient had larger HDL(2) and HDL(3) particle sizes than those of reference serum. CONCLUSION These results suggest that a decreased apoA-II protein in serum and increased HDL-cholesterol and particle size might protect against hyperlipidaemia and the atherosclerotic process, even in a patient with severe obesity.
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Affiliation(s)
- S H Park
- School of Biotechnology, Yeungnam University, Gyeongsan 712-749, South Korea
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Pieper MP, Chaudhary NI, Park JE. Acetylcholine-induced proliferation of fibroblasts and myofibroblasts in vitro is inhibited by tiotropium bromide. Life Sci 2007; 80:2270-3. [PMID: 17412366 DOI: 10.1016/j.lfs.2007.02.034] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Revised: 01/29/2007] [Accepted: 02/09/2007] [Indexed: 11/15/2022]
Abstract
Acetylcholine (ACh) has been suggested to exert various pathophysiological activities in the airways in addition to vagally-induced bronchoconstriction. This archetypal neurotransmitter and other components of the cholinergic system are expressed in a number of non-neuronal cells in the airways. Non-neuronal ACh released from these cells may affect fibroblasts (Fb) as well as inflammatory cells in lung tissue. Tiotropium bromide is a once-a-day antimuscarinic drug, marketed under the brand name Spiriva, for the treatment of chronic obstructive pulmonary disease (COPD). Besides its proven direct bronchodilatory activity, recent evidence suggests that tiotropium may be able to reduce the frequency of exacerbations and attenuate the decline in lung function, thus improving the course of obstructive airway diseases. The aim of the present study was to investigate the effects of tiotropium on the ACh-induced proliferation of primary human Fb isolated from biopsies of lung fibrosis patients and myofibroblasts (MyFb) derived from these cells. A human lung Fb cell line acted as control. Expression of muscarinic receptor subtypes M1, M2 and M3 was demonstrated by RT-PCR in both cell types. Acetylcholine stimulated proliferation in all cells investigated. Tiotropium concentration-dependently inhibited the ACh-induced proliferation in both the Fb and MyFb with a maximum effect at 30 nM. These results suggest that cholinergic stimuli mediated by muscarinic receptors could contribute to remodeling processes in chronic airway disease. Tiotropium bromide may have a beneficial influence on airway remodeling processes in chronic airway diseases through antiproliferative effects on fibroblasts and myofibroblasts.
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Affiliation(s)
- M P Pieper
- Department of Pulmonary Diseases Research, Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach an der Riss, Germany.
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Chaudhary NI, Roth GJ, Hilberg F, Müller-Quernheim J, Prasse A, Zissel G, Schnapp A, Park JE. Inhibition of PDGF, VEGF and FGF signalling attenuates fibrosis. Eur Respir J 2007; 29:976-85. [PMID: 17301095 DOI: 10.1183/09031936.00152106] [Citation(s) in RCA: 270] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BIBF 1000 is a small molecule inhibitor targeting the receptor kinases of platelet-derived growth factor (PDGF), basic fibroblast growth factor and vascular endothelial growth factor, which have known roles in the pathogenesis of pulmonary fibrosis. The anti-fibrotic potential of BIBF 1000 was determined in a rat model of bleomycin-induced lung fibrosis and in an ex vivo fibroblast differentiation assay. Rats exposed to a single intra-tracheal injection of bleomycin were treated with BIBF 1000 starting 10 days after bleomycin administration. To gauge for anti-fibrotic activity, collagen deposition and pro-fibrotic growth factor gene expression was analysed in isolated lungs. Furthermore, the activity of BIBF 1000 was compared with imatinib mesylate (combined PDGF receptor, c-kit and c-abl kinase inhibitor) and SB-431542 (transforming growth factor (TGF)-beta receptor I kinase inhibitor) in an ex vivo TGF-beta-driven fibroblast to myofibroblast differentiation assay, performed in primary human bronchial fibroblasts. Treatment of rats with BIBF 1000 resulted in the attenuation of fibrosis as assessed by the reduction of collagen deposition and the inhibition of pro-fibrotic gene expression. In the cellular assay both SB-431542 and BIBF 1000 showed dose-dependent inhibition of TGF-beta-induced differentiation, whereas imatinib mesylate was inactive. BIBF 1000, or related small molecules with a similar kinase inhibition profile, may represent a novel therapeutic approach for the treatment of idiopathic pulmonary fibrosis.
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Affiliation(s)
- N I Chaudhary
- Dept of Pulmonary Research, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorferstrasse 65, D-88937, Biberach an der Riss, Germany
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Jang G, Kim MK, Oh HJ, Hossein MS, Fibrianto YH, Hong SG, Park JE, Kim JJ, Kim HJ, Kang SK, Kim DY, Lee BC. Birth of viable female dogs produced by somatic cell nuclear transfer. Theriogenology 2006; 67:941-7. [PMID: 17169419 DOI: 10.1016/j.theriogenology.2006.11.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2006] [Accepted: 11/03/2006] [Indexed: 11/20/2022]
Abstract
Since the only viable cloned offspring born in dogs was a male, the purpose of the present study was to produce female puppies by somatic cell nuclear transfer (SCNT). Adult ear fibroblasts from a 2-month-old female Afghan hound were isolated and used as donor cells. In vivo-matured canine oocytes surgically collected (approximately 72h after ovulation) from the oviducts of 23 donors were used for SCNT. After removal of the cumulus cells, oocytes were enucleated, microinjected, fused with a donor cell, and activated. A total of 167 reconstructed SCNT embryos were surgically transferred (Day 0) into the oviducts of 12 recipient bitches (average 13.9 embryos/recipient, range 6-22) with spontaneous, synchronous estrous cycles. Three pregnancies were detected by ultrasonography on Day 23, maintained to term, and three healthy female puppies (520, 460, and 520g), were delivered by Caesarean section on Day 60. These puppies were phenotypically and genotypically identical to the cell donor. In conclusion, we have provided the first demonstration that female dogs can be produced by nuclear transfer of ear fibroblasts into enucleated canine oocytes.
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Affiliation(s)
- G Jang
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, Republic of Korea
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