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Jaiswal A, Verma A, Dannenfelser R, Melssen M, Tirosh I, Izar B, Kim T, Nirschl C, Devi S, Olson W, Slingluff C, Engelhard V, Garraway L, Regev A, Yoon C, Troyanskaya O, Elemento O, Suarez-Farinas M, Anandasabapathy N. 037 A systems immunology approach to classify melanoma tumor infiltrating lymphocytes (TILs) informs and models overall survival. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.091] [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: 11/16/2022]
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2
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Liu K, Milligan M, Schoenfeld J, Tishler R, Ng A, Devlin P, Fite E, Hanna G, Silk A, Yoon C, Thakuria M, Margalit D. MO-0151 Outcomes after hypofractionated radiotherapy for non-metastatic Merkel cell carcinoma. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02311-8] [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: 11/25/2022]
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3
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Margalit D, Fite E, Schoenfeld J, Tishler R, Silk A, Hanna G, DeCaprio J, Yoon C, Thakuria M. Changes in Merkel Cell Oncoprotein Antibodies (AMERK) After Radiation Therapy (RT) in Curatively Treated Merkel Cell Carcinoma (MCC) and Association With Recurrence. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.119] [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: 10/20/2022]
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4
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Chipidza F, Thakuria M, Schoenfeld J, Silk A, Catalano P, Yoon C, Hanna G, DeCaprio J, Tishler R, Margalit D. Effect of Treatment Center Experience on Survival after Diagnosis of Stage I-III Merkel Cell Carcinoma Treated with Surgery with or without Postoperative Radiation Therapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Choi W, Yoon C, Lee J, Lee C. Abstract No. 598 Recurrent malignant jejunojejunostomy obstruction after gastric surgery: palliation with fluoroscopy-guided stent placement. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.659] [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] Open
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Choi W, Yoon C, Lee J, Lee C. Abstract No. 597 Percutaneous transhepatic enteral stent placement in patients with recurrent malignant obstruction in surgically altered bowel anatomy. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.658] [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: 11/15/2022] Open
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7
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Affiliation(s)
- DR Kang
- Chonbuk National University, South Korea
| | - SA Belal
- Sylhet Agricultural University, Bangladesh
| | - KD Song
- Chonbuk National University, South Korea
| | - C Yoon
- Chonbuk National University, South Korea
| | - BY Park
- Chonbuk National University, South Korea
| | - KS Shim
- Chonbuk National University, South Korea
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Lin JX, Yoon C, Desiderio J, Yi BC, Li P, Zheng CH, Parisi A, Huang CM, Strong VE, Yoon SS. Development and validation of a staging system for gastric adenocarcinoma after neoadjuvant chemotherapy and gastrectomy with D2 lymphadenectomy. Br J Surg 2019; 106:1187-1196. [PMID: 31197829 DOI: 10.1002/bjs.11181] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 01/21/2019] [Accepted: 02/25/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND Neoadjuvant chemotherapy followed by gastrectomy with D2 lymphadenectomy is commonly used for patients with locally advanced gastric adenocarcinoma. The eighth AJCC ypTNM staging system was validated based on patients undergoing more limited lymphadenectomy (less than D2). The aim of this study was to develop a system for accurate staging of patients with locally advanced gastric adenocarcinoma who receive neoadjuvant chemotherapy followed by gastrectomy with D2 lymphadenectomy. METHODS A modified system of ypTNM was developed, based on overall survival (OS) of patients receiving neoadjuvant chemotherapy followed by gastrectomy with D2 lymphadenectomy at Memorial Sloan Kettering Cancer Center, and validated using data from an international cohort of patients who had similar treatment. RESULTS Of 325 patients in the derivation cohort, 33 (10·2 per cent) had ypT0 N0/+ tumours, which are not classifiable under the AJCC system. The 5-year OS rate for modified ypTNM stages I, II, IIIA and IIIB was 89, 71, 42·3 and 10 per cent respectively, compared with 82, 65·2 and 24·1 for AJCC stages I, II and III respectively. The concordance index (0·730 versus 0·709), estimated area under the curve (0·765 versus 0·740) and time-dependent receiver operating characteristic (ROC) curve throughout the observation period were all superior for modified ypTNM staging. For the validation cohort of 186 patients, the modified system was again better at separating patients into prognostic groups for OS. CONCLUSION The modified ypTNM staging system improves the accuracy of OS prediction for patients treated with neoadjuvant chemotherapy followed by gastrectomy with D2 lymphadenectomy.
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Affiliation(s)
- J X Lin
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.,Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, USA
| | - C Yoon
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, USA
| | - J Desiderio
- Department of Digestive Surgery, St. Mary's Hospital, University of Perugia, Terni, Italy
| | - B C Yi
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, USA
| | - P Li
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - C H Zheng
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - A Parisi
- Department of Digestive Surgery, St. Mary's Hospital, University of Perugia, Terni, Italy
| | - C M Huang
- Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - V E Strong
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, USA
| | - S S Yoon
- Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, USA
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9
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Pawelec KM, Yoon C, Giger RJ, Sakamoto J. Engineering a platform for nerve regeneration with direct application to nerve repair technology. Biomaterials 2019; 216:119263. [PMID: 31220794 DOI: 10.1016/j.biomaterials.2019.119263] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 06/05/2019] [Accepted: 06/07/2019] [Indexed: 12/16/2022]
Abstract
The development of effective treatment options for repair of peripheral nerves is complicated by lack of knowledge concerning the interactions between cells and implants. A promising device, the multichannel scaffold, incorporates microporous channels, aligning glia and directing axonal growth across a nerve gap. To enhance clinical outcomes of nerve repair, a platform, representative of current implant technology, was engineered which 1) recapitulated key device features (porosity and linearity) and 2) demonstrated remyelination of adult neurons. The in vitro platform began with the study of Schwann cells on porous polycaprolactone (PCL) and poly(lactide co-glycolide) (PLGA) substrates. Surface roughness determined glial cell attachment, and an additional layer of topography, 40 μm linear features, aligned Schwann cells and axons. In addition, direct co-culture of sensory neurons with Schwann cells significantly increased neurite outgrowth, compared to neurons cultured alone (naive or pre-conditioned). In contrast to the control substrate (glass), on porous PCL substrates, Schwann cells differentiated into a mature myelinating phenotype, expressing Oct-6, MPZ and MBP. The direct applicability of this platform to nerve implants, including its response to physiological cues, allows for optimization of cell-material interactions, close observation of the regeneration process, and the study of therapeutics, necessary to advance peripheral nerve repair technology.
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Affiliation(s)
- K M Pawelec
- University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, 48109, USA
| | - C Yoon
- University of Michigan, Department of Cell and Developmental Biology, Ann Arbor, MI, 48109, USA
| | - R J Giger
- University of Michigan, Department of Cell and Developmental Biology, Ann Arbor, MI, 48109, USA
| | - J Sakamoto
- University of Michigan, Department of Mechanical Engineering, Ann Arbor, MI, 48109, USA.
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Min JY, Kim HJ, Yoon C, Lee K, Yeo M, Min KB. Tuberculosis infection via the emergency department among inpatients in South Korea: a propensity score matched analysis of the National Inpatient Sample. J Hosp Infect 2018; 100:92-98. [PMID: 29608938 PMCID: PMC7114590 DOI: 10.1016/j.jhin.2018.03.031] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 03/26/2018] [Indexed: 12/02/2022]
Abstract
BACKGROUND Emergency departments (EDs) carry a high risk of infectious disease transmission and have also been implicated in tuberculosis (TB) outbreaks. AIM To determine if patients who visit EDs have an increased risk of TB infection. Using South Korean inpatient sample data (2012), the risk of TB occurrence during 90 days after hospitalization for patients admitted via EDs was compared with that for patients admitted via outpatient clinics. METHODS The data of the 2012 Health Insurance Review and Assessment Service - National Inpatient Sample were used. TB diagnosis was based on International Classification of Diseases Version 10 [all TB (A15-A19), pulmonary TB (A15-A16) and extrapulmonary TB (A17-A18)]. FINDINGS After propensity score matching using the demographic and clinical characteristics of the patients, 191,997 patients (64,017 patients admitted via EDs and 127,908 patients admitted via outpatient clinics) were included in this study. There was no significant difference in baseline patient characteristics between the two groups. The percentage of patients with TB admitted via EDs was higher than that of patients admitted via outpatient clinics. The likelihood of active TB occurrence was 30% higher for all TB [hazard ratio (HR) 1.30; 95% confidence interval (CI) 1.12-1.52] and pulmonary TB (HR 1.30; 95% CI 1.10-1.53) in patients admitted via EDs compared with patients admitted via outpatient clinics; this difference was significant. However, no difference in the occurrence of extrapulmonary TB was observed between the two groups. CONCLUSIONS The likelihood of TB infection was greater in patients admitted via EDs than in patients admitted via outpatient clinics.
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Affiliation(s)
- J-Y Min
- Institute of Health and Environment, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea
| | - H-J Kim
- Institute of Health and Environment, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea
| | - C Yoon
- Institute of Health and Environment, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea; Department of Environmental Health Sciences, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea
| | - K Lee
- Institute of Health and Environment, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea; Department of Environmental Health Sciences, Seoul National University, Graduate School of Public Health, Seoul, Republic of Korea
| | - M Yeo
- Department of Architecture and Architectural Engineering, College of Engineering, Seoul National University, Seoul, Republic of Korea
| | - K-B Min
- Department of Preventive Medicine, College of Medicine, Seoul National University, Seoul, Republic of Korea.
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Rabinowits G, Harris E, Chen T, Giobbie-Hurder A, Reilly M, Schoenfeld J, Margalit D, Wang L, Yoon C, Thakuria M. Extracapsular Nodal Extension Predicts Death and Recurrence in Merkel Cell Carcinoma (MCC). Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2017.12.190] [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: 11/17/2022]
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12
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Bae SJ, Ahn SG, Yoon C, Cha YJ, Jeong J. Abstract P4-02-11: Accuracy of breast magnetic resonance imaging has limited value to reduce the margin-positive rate: A study in relation to the molecular subtypes. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p4-02-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Newly released guideline standardizing a negative margin after breast-conservative surgery (BCS) as “no ink on tumor” by SSO-ASTRO stressed the importance of estimation tumor extent with comprehensive breast imaging studies. To evaluate clinical value of breast magnetic resonance imaging (MRI) in patients with BCS, we compared the degree of correlation between MRI-pathology and ultrasonography (US)-pathology according to subtypes. In addition, we investigated the margin-positive rates and secondary operation rates for margin clearance.
Methods: We identified patients with invasive breast cancer who had preoperative breast MRI and ultrasound between 2011 and 2016. We excluded patients having large tumor more than 5cm or multiple tumors or undergoing mastectomy. Patients were classified into 4 subtypes based on the immunohistochemistry; luminal A, luminal B/HER2, HER2, triple-negative breast cancer (TNBC). Lin's concordance correlation coefficient was used to measure the agreement between the MRI or US and tumor extent. Tumor extent was defined as pathologic tumor size including in situ carcinoma. Margin-positivity was assessed based on intraoperative frozen examination.
Results: A total 516 patients with single tumor undergoing BCS were included. Means of tumor size were 1.99 ± 0.91 cm by pathologic examination, 1.91 ± 1.01 cm by MRI, and 1.76 ± 0.92 cm by US, respectively. The correlation coefficient of MRI-pathology was significantly higher than that of US-pathology (r=0.6975 vs. 0.6211, P=0.001). A superiority of MRI than US in measuring pathologic extent was only observed in TNBC (r=0.8089 vs. 0.6014, P<0.001), whereas the agreement between the MRI or US and tumor extents was low in the HER2 (MRI: 0.3509, US: 0.3165). Also, the margin-positive rate was higher in HER2 (luminal A, 11.6%; luminal B/HER2, 17.5%; HER2, 29.6%; TNBC, 17.8%; P=0.0382). In the post-hoc test, the HER2 was more likely to have positive margin compared to Luminal A (P=0.0039). There is no significant difference in secondary operation as margin clearance according to the subtypes (P>0.999).
Margin positive and re-excision rates according to the subtypes Luminal A (n=302)Luminal B (n=80)HER2 (n=27)TNBC (n=107)P valuePositive margin35 (11.6)14 (17.5)8 (29.6)19 (17.8)0.0382Re-excision14 (4.6)4 (5.0)1 (3.7)5 (4.7)>0.9999
Conclusions: Given a superiority of MRI to US in preoperative assessment, MRI-guided BCS did not reduce the margin-positive rate in TNBC. In the HER2, size correlation of MRI-pathology was very low, and the margin-positive rate was high. Collectively, our findings suggest that accuracy of MRI has limited value to reduce the margin-positive rate.
Citation Format: Bae SJ, Ahn SG, Yoon C, Cha YJ, Jeong J. Accuracy of breast magnetic resonance imaging has limited value to reduce the margin-positive rate: A study in relation to the molecular subtypes [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-02-11.
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Affiliation(s)
- SJ Bae
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - SG Ahn
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - C Yoon
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - YJ Cha
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J Jeong
- Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Pacchierotti C, Ongaro F, van den Brink F, Yoon C, Prattichizzo D, Gracias DH, Misra S. Steering and control of miniaturized untethered soft magnetic grippers with haptic assistance. IEEE Trans Autom Sci Eng 2018; 15:290-306. [PMID: 31423113 PMCID: PMC6697175 DOI: 10.1109/tase.2016.2635106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Untethered miniature robotics have recently shown promising results in several scenarios at the microscale, such as targeted drug delivery, microassembly, and biopsy procedures. However, the vast majority of these small-scale robots have very limited manipulation capabilities, and none of the steering systems currently available enable humans to intuitively and effectively control dexterous miniaturized robots in a remote environment. In this paper, we present an innovative micro teleoperation system with haptic assistance for the intuitive steering and control of miniaturized self-folding soft magnetic grippers in 2-D space. The soft grippers can be wirelessly positioned using weak magnetic fields and opened/closed by changing their temperature. An image-guided algorithm tracks the position of the controlled miniaturized gripper in the remote environment. A haptic interface provides the human operator with compelling haptic sensations about the interaction between the gripper and the environment, as well as enables the operator to intuitively control the target position and grasping configuration of the gripper. Finally, magnetic and thermal control systems regulate the position and grasping configuration of the gripper. The viability of the proposed approach is demonstrated through two experiments involving 26 human subjects. Providing haptic stimuli elicited statistically significant improvements in the performance of the considered navigation and micromanipulation tasks. Note to Practitioners-The ability to accurately and intuitively control the motion of miniaturized grippers in remote environments can open new exciting possibilities in the fields of minimally-invasive surgery, micromanipulation, biopsy, and drug delivery. This paper presents a micro teleoperation system with haptic assistance through which a clinician can easily control the motion and open/close capability of miniaturized wireless soft grippers. It introduces the underlying autonomous magnetic and thermal control systems, their interconnection with the master haptic interface, and an extensive evaluation in two real-world scenarios: following of a predetermined trajectory, and pick-and-place of a microscopic object.
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Affiliation(s)
- C. Pacchierotti
- CNRS at Irisa and Inria Rennes Bretagne Atlantique, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - F. Ongaro
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, MIRA–Institute for Biomedical Technology and Technical Medicine, University of Twente, 7522 NB Enschede, The Netherlands
| | - F. van den Brink
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, MIRA–Institute for Biomedical Technology and Technical Medicine, University of Twente, 7522 NB Enschede, The Netherlands
| | - C. Yoon
- Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD 21218 USA
| | - D. Prattichizzo
- Department of Information Engineering and Mathematics, University of Siena, 53100 Siena, Italy, and also with the Department of Advanced Robotics, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
| | - D. H. Gracias
- Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD 21218 USA
- Department of Chemical and Biomolecular Engineering, The Johns Hopkins University, Baltimore, MD 21218 USA
| | - S. Misra
- Surgical Robotics Laboratory, Department of Biomechanical Engineering, MIRA–Institute for Biomedical Technology and Technical Medicine, University of Twente, 7522 NB Enschede, The Netherlands
- Department of Biomedical Engineering, University Medical Centre Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
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Raja G, Kim S, Yoon D, Yoon C, Kim S. 1
H NMR Based Metabolomics Studies of the Toxicity of Titanium Dioxide Nanoparticles in Zebrafish (Danio rerio
). B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ganesan Raja
- Department of Chemistry; Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University; Busan 46241 Republic of Korea
| | - Siwon Kim
- Department of Chemistry; Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University; Busan 46241 Republic of Korea
| | - Dahye Yoon
- Department of Chemistry; Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University; Busan 46241 Republic of Korea
| | - Changshin Yoon
- Department of Chemistry; Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University; Busan 46241 Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry; Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University; Busan 46241 Republic of Korea
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Ahn S, Cha Y, Yoon C, Bae S, Kim J, Jeong J. Comparisons of tumor-infiltrating lymphocytes and 21-gene recurrence score in ER-positive/HER2-negative breast cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx362.044] [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: 11/14/2022] Open
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16
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Yoon D, Yoon C, Choi H, Noh H, Ok Y, Kim DH, Kim HS, Kim S. 1H-NMR-based Metabolomic Study of Miamiensis avidus-infected Olive Flounder. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Changshin Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Hyeonsoo Choi
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Hyeonkyung Noh
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Youngjun Ok
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
| | - Do-Hyung Kim
- Department of Aquatic Life Medicine; Pukyong National University; Busan 48513, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences and Genetic Engineering Institute; Pusan National University; Busan 46241, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241, Republic of Korea
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Suarez-Farinas M, Devi K, Dannenfelser R, Izar B, Prakadan S, Zhu Q, Yoon C, Regev A, Garraway L, Shalek A, Troyansakaya O, Anandasabapathy N. 065 Highly conserved tissue immune signatures are co-opted in cancer. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Devi K, Melssen M, Tirosh I, Izar B, Olson W, Engelhard V, Slingluff C, Regev A, Garraway L, Kupper T, Yoon C, Suarez-Farinas M, Anandasabapathy N. 062 Human melanoma TILs share phenotypic and transcriptional properties with tissue resident memory T cells. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.075] [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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Abstract
Proton nuclear magnetic resonance (1H-NMR) spectroscopy was used to study the response of zebrafish (Danio rerio) to increasing concentrations of bisphenol A (4,4'-(propane-2,2-diyl)diphenol, BPA). Orthogonal partial least squares discriminant analysis (OPLS-DA) was applied to detect aberrant metabolomic profiles after 72 h of BPA exposure at all levels tested (0.01, 0.1, and 1.0 mg/L). The OPLS-DA score plots showed that BPA exposure caused significant alterations in the metabolome. The metabolomic changes in response to BPA exposure generally exhibited nonlinear patterns, with the exception of reduced levels of several metabolites, including glutamine, inosine, lactate, and succinate. As the level of BPA exposure increased, individual metabolite patterns indicated that the zebrafish metabolome was subjected to severe oxidative stress. Interestingly, ATP levels increased significantly at all levels of BPA exposure. In the present study, we demonstrated the applicability of 1H-NMR-based metabolomics to identify the discrete nature of metabolic changes.
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Affiliation(s)
- Changshin Yoon
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Dahye Yoon
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Junghee Cho
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Siwon Kim
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Heonho Lee
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Hyeonsoo Choi
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Suhkmann Kim
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
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20
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Yoon D, Choi H, Noh H, Ok YJ, Oh S, Ma S, Yoon C, Kim S. Toxicological Assessment of Microcystin-LR to Zebrafish (Danio rerio
) Using Metabolomics. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11112] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Hyeonsoo Choi
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Hyeonkyung Noh
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Young Jun Ok
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Sangah Oh
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Seohee Ma
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Changshin Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
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Abstract
OBJECTIVES We evaluated the accuracy of augmented reality (AR)-based navigation assistance through simulation of bone tumours in a pig femur model. METHODS We developed an AR-based navigation system for bone tumour resection, which could be used on a tablet PC. To simulate a bone tumour in the pig femur, a cortical window was made in the diaphysis and bone cement was inserted. A total of 133 pig femurs were used and tumour resection was simulated with AR-assisted resection (164 resection in 82 femurs, half by an orthropaedic oncology expert and half by an orthopaedic resident) and resection with the conventional method (82 resection in 41 femurs). In the conventional group, resection was performed after measuring the distance from the edge of the condyle to the expected resection margin with a ruler as per routine clinical practice. RESULTS The mean error of 164 resections in 82 femurs in the AR group was 1.71 mm (0 to 6). The mean error of 82 resections in 41 femurs in the conventional resection group was 2.64 mm (0 to 11) (p < 0.05, one-way analysis of variance). The probabilities of a surgeon obtaining a 10 mm surgical margin with a 3 mm tolerance were 90.2% in AR-assisted resections, and 70.7% in conventional resections. CONCLUSION We demonstrated that the accuracy of tumour resection was satisfactory with the help of the AR navigation system, with the tumour shown as a virtual template. In addition, this concept made the navigation system simple and available without additional cost or time.Cite this article: H. S. Cho, Y. K. Park, S. Gupta, C. Yoon, I. Han, H-S. Kim, H. Choi, J. Hong. Augmented reality in bone tumour resection: An experimental study. Bone Joint Res 2017;6:137-143.
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Affiliation(s)
- H S Cho
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Y K Park
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - S Gupta
- Division of Orthopaedic Surgery, Glasgow Royal Infirmary, 84 Castle Street, Glasgow, G4 0SF, UK
| | - C Yoon
- Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - I Han
- Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - H-S Kim
- Department of Orthopaedic Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - H Choi
- Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea
| | - J Hong
- Department of Robotics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea
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Kim S, Yoon D, Lee DK, Yoon C, Kim S. 1 H-NMR with Multivariate Analysis for Automobile Lubricant Comparison. J Forensic Sci 2017; 62:1033-1036. [PMID: 28230901 DOI: 10.1111/1556-4029.13471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/22/2017] [Accepted: 01/24/2017] [Indexed: 12/21/2022]
Abstract
Identification of suspected automobile-related lubricants could provide valuable information in forensic cases. We examined that automobile lubricants might exhibit the chemometric characteristics to their individual usages. To compare the degree of clustering in the plots, we co-plotted general industrial oils that were highly dissimilar with automobile lubricants in additive compositions. 1 H-NMR spectroscopy was used with multivariate statistics as a tool for grouping, clustering, and identification of automobile lubricants in laboratory conditions. We analyzed automobile lubricants including automobile engine oils, automobile transmission oils, automobile gear oils, and motorcycle oils. In contrast to the general industrial oils, automobile lubricants showed relatively high tendencies of clustering to their usages. Our pilot study demonstrated that the comparison of known and questioned samples to their usages might be possible in forensic fields.
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Affiliation(s)
- Siwon Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Korea.,National Forensic Service Busan Institute, Yangsan-si, 50612, Korea
| | - Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Korea
| | - Dong-Kye Lee
- National Forensic Service Busan Institute, Yangsan-si, 50612, Korea
| | - Changshin Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan, 46241, Korea
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Raja G, Kim S, Yoon D, Yoon C, Kim S. 1H-NMR-based Metabolomics Studies of the Toxicity of Mesoporous Carbon Nanoparticles in Zebrafish (Danio rerio). B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11080] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Ganesan Raja
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Siwon Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Dahye Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Changshin Yoon
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteome Biophysics and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
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Abstract
A 1H-nuclear magnetic resonance (NMR) spectroscopy with multivariate analysis was applied to detect the toxicity of antiacetylcholinesterase insecticides, methomyl (methyl (1E)-N-(methylcarbamoyloxy)ethanimidothioate) and methidathion (3-(dimethoxyphosphinothioyl sulfanylmethyl)-5-methoxy-1,3,4-thiadiazol-2-one), using zebrafish (Danio rerio) and Chinese bleak (Aphyocypris chinensis). Generally, methomyl and methidathion have been believed not to highly accumulate in fish tissues. However, these pesticides showed their toxicity by altering patterns of whole-body metabolites in neurotransmitter balance, energy metabolism, oxidative stress, and muscle maintenance in low concentrations. We used Pearson correlation analysis to contextualize the metabolic markers in pesticide treated groups. We observed that the positive correlations of choline with acetate and betaine in untreated control were shifted to null correlations showing acetylcholinesterase specific toxicity. This research demonstrated the applicability and potential of NMR metabolomics in detecting toxic effects of insecticide with a modicum of concentrations in aquatic environment.
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Affiliation(s)
- Dahye Yoon
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Siwon Kim
- b National Forensic Service Busan Institute , Yangsan-si , Korea
| | - Minji Lee
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Changshin Yoon
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
| | - Suhkmann Kim
- a Department of Chemistry , Center for Proteome Biophysics and Chemistry Institute for Functional Materials, Pusan National University , Busan , Korea
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Kim Y, Yoon C, Seong N, Lee H, An S, Woo Y. Cryptogenic hemoptysis: bronchial artery embolization using N-butyl-cyanoacrylate. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.158] [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: 10/22/2022] Open
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Kim Y, Yoon C, Seong N, An S, Woo Y. Spontaneous isolated dissection of superior mesenteric artery: a long-term outcome after endovascular stent placement. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.307] [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: 11/17/2022] Open
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Rha J, Park H, Yoon C, Kwon J, Kim S, Lee E, Oh D. Clinical characteristics of stroke patients with essential thrombocytosis according to Jak2 mutation. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1434] [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: 11/29/2022]
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Choi S, Yoon B, Yoon C, Kwon J, Jeong J, Park M, Yoon B. Dietary patterns and conversion from amnestic mild cognitive impairment to dementia: a credos study. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.398] [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: 10/22/2022]
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Abstract
Exosomes are extracellularly secreted vesicles ranging from 40 to 100 nm in diameter that are thought to play important roles in intercellular communication. Exosomes contain numerous proteins, RNA, and lipids that can affect the status of recipient cells under various pathological conditions. MicroRNAs (miRNAs) are small non-coding RNAs that play a major role in post-transcriptional gene silencing by interacting with the 3'-untranslated regions of target genes. Epstein-Barr virus (EBV) has been reported to induce sustained elevation of cellular miRNAs such as miR-155. We hypothesized that miRNAs delivered by exosomes might affect the angiogenesis of retinal pigment epithelial (RPE) cells. Here, we demonstrated that co-culture of EBV-positive Burkitt's lymphoma (BL) cells (Raji) with retinal pigment epithelial (ARPE-19) cells increased the level of miR-155 in recipient cells whereas no major difference was detected for co-culture with EBV-negative BL cells (Ramos). Isolated Raji exosomes increased transcriptional and translational levels of VEGF-A in ARPE-19 cells, which was reversely correlated with von Hippel-Lindau expression. A human umbilical vein endothelial cell tube formation assay showed that delivery of ectopic miR-155 rendered ARPE-19 cells proangiogenic. Our results demonstrate that sustained accumulation of miR-155 mediated by exosomes might affect remote recipient cells such as retinal pigment epithelial cells.
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Affiliation(s)
- Changshin Yoon
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Jayoung Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Gabin Park
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Seonghan Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Daejin Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Dae Young Hur
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea
| | - Bomi Kim
- Department of Pathology, Inje University College of Medicine, Busan, Republic of Korea
| | - Yeong Seok Kim
- Department of Anatomy and Research Center for Tumor Immunology, Inje University College of Medicine, Bokji-ro 75, Busanjin-gu, Busan, 614-735, Republic of Korea.
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Cho Y, Jeon K, Park J, Yoon C, Suh J, Youn T, Chae I, Choi D. Evolution of non-culprit coronary atherosclerotic plaques assessed by serial virtual histology-intravascular ultrasound in st-segment elevation myocardial infarction and chronic total occlusion. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.831] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Noh KK, Chung KW, Choi YJ, Park MH, Jang EJ, Park CH, Yoon C, Kim ND, Kim MK, Chung HY. β-Hydroxy β-methylbutyrate improves dexamethasone-induced muscle atrophy by modulating the muscle degradation pathway in SD rat. PLoS One 2014; 9:e102947. [PMID: 25032690 PMCID: PMC4102592 DOI: 10.1371/journal.pone.0102947] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 06/24/2014] [Indexed: 11/18/2022] Open
Abstract
Skeletal muscle atrophy results from various conditions including high levels of glucocorticoids, and β-hydroxy β-methylbutyrate (HMB; a metabolite of leucine) is a potent therapeutical supplement used to treat various muscle disorders. Recent studies have demonstrated that HMB inhibits dexamethasone-induced atrophy in cultured myotubes, but its effect on dexamethasone-induced muscle atrophy has not been determined in vivo. In the present study, we investigated the effect of HMB on dexamethasone-induced muscle atrophy in rats. Treatment with dexamethasone weakened grip strengths and increased muscle damage as determined by increased serum creatine kinase levels and by histological analysis. Dexamethasone treatment also reduced both soleus and gastrocnemius muscle masses. However, HMB supplementation significantly prevented reductions in grip strengths, reduced muscle damage, and prevented muscle mass and protein concentration decrease in soleus muscle. Biochemical analysis demonstrated that dexamethasone markedly increased levels of MuRF1 protein, which causes the ubiquitination and degradation of MyHC. Indeed, dexamethasone treatment decreased MyHC protein expression and increased the ubiquitinated-MyHC to MyHC ratio. However, HMB supplementation caused the down-regulations of MuRF1 protein and of ubiquitinated-MyHC. Furthermore, additional experiments provided evidence that HMB supplementation inhibited the nuclear translocation of FOXO1 induced by dexamethasone, and showed increased MyoD expression in the nuclear fractions of soleus muscles. These findings suggest that HMB supplementation attenuates dexamethasone-induced muscle wasting by regulating FOXO1 transcription factor and subsequent MuRF1 expression. Accordingly, our results suggest that HMB supplementation could be used to prevent steroid myopathy.
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Affiliation(s)
- Kyung Kyun Noh
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Ki Wung Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Yeon Ja Choi
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Min Hi Park
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Eun Ji Jang
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Chan Hum Park
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Changshin Yoon
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Nam Deuk Kim
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
| | - Mi Kyung Kim
- Longevity Life Science and Technology Institute, Pusan National University, Busan, Republic of Korea
| | - Hae Young Chung
- Molecular Inflammation Research Center for Aging Intervention (MRCA), Department of Pharmacy, Pusan National University, Busan, Republic of Korea
- * E-mail:
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Yoon C, Kim D, Kim S, Park GB, Hur DY, Yang JW, Park SG, Kim YS. MiR-9 regulates the post-transcriptional level of VEGF165a by targeting SRPK-1 in ARPE-19 cells. Graefes Arch Clin Exp Ophthalmol 2014; 252:1369-76. [PMID: 25007957 DOI: 10.1007/s00417-014-2698-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/07/2014] [Accepted: 06/16/2014] [Indexed: 02/07/2023] Open
Abstract
PURPOSE To investigate the effect of the overexpression of miRNA-9 to the ratio of pro- and anti-angiogenic isoforms of vascular endothelial growth factor (VEGF) in human retinal pigment cells (ARPE-19). METHODS Oxidative stress was induced to ARPE-19 cells by 4-hydroxynonenal (4-HNE), tert-butyl hydroperoxide (t-BH), and hypoxia chamber with 1% O₂. Expression patterns of miRNAs were validated by qPCR. Relative mRNA levels of VEGF and PEDF were measured by semi-quantitative PCR. After the transfection of miR-9 mimic and inhibitor, transcriptional levels of VEGF165a, VEGF 165b, and SRPK-1 were measured by qPCR. RESULTS We demonstrated that miR-9 expression is decreased in ARPE-19 human retinal pigment cells under hypoxic stress induced by 4-HNE, a lipid peroxidation end-product. We observed that miR-9 mimic transfection of ARPE-19 inhibited one of its targets, serine-arginine protein kinase-1 (SRPK-1), modulating the transcriptional level of VEGF165b. Transfection of miR-9 reduced the alternative splicing of VEGF165a mRNA in ARPE-19 cells under hypoxic conditions, suggesting that miR-mediated regulation of alternative splicing could be a potential therapeutic target in neovascular pathologies. CONCLUSIONS Hypoxic stress decreased the miR-9 level in ARPE-19 cells, which increased the transcriptional level of SRPK-1, resulting in alternative splicing shift to pro-angiogenic isoforms of VEGF165 in human retinal pigment epithelial cells.
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Affiliation(s)
- Changshin Yoon
- Department of Anatomy, College of Medicine, Inje University, Bokji-ro 75, Busanjin-gu, Busan, South Korea, 614-735
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Kim Y, Yoon C, Seong N, Woo Y, Kim Y. Abstract No. 259: Pelvic arterial embolization in treatment of postpartum hemorrhage: clinical outcomes and predictive factor for failed embolization. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.312] [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: 11/25/2022] Open
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An S, Yoon C, Woo Y, Seong N, Kim Y, Kim Y, Park J. Abstract No. 384: Inaccessible postoperative abdominal abscess: a new percutaneous drainage technique. J Vasc Interv Radiol 2012. [DOI: 10.1016/j.jvir.2011.12.442] [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: 10/28/2022] Open
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Kang S, Kim S, Kang T, Yoon C, Ko S, Hur M, Lee H, Seol C. 528 Short-term Outcomes of Immediate Breast Reconstruction After Mastectomy Using Implant or Tissue Expander in Patients with Breast Cancer. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70593-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kim T, Park C, Nam J, Yoon C. UP-02.021 Influence of Preoperative Variables on the Outcome of Holmium Laser Enucleation of the Prostate. Urology 2011. [DOI: 10.1016/j.urology.2011.07.839] [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: 12/01/2022]
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Ko J, Jun H, Chung H, Yoon C, Kim T, Kwon M, Lee S, Jung S, Kim M, Park JH. Comparison of EGF with VEGF non-viral gene therapy for cutaneous wound healing of streptozotocin diabetic mice. Diabetes Metab J 2011; 35:226-35. [PMID: 21785742 PMCID: PMC3138097 DOI: 10.4093/dmj.2011.35.3.226] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 05/20/2011] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND To accelerate the healing of diabetic wounds, various kinds of growth factors have been employed. It is the short half-life of administered growth factors in hostile wound beds that have limited wide-spread clinical usage. To overcome this limitation, growth factor gene therapy could be an attractive alternative rather than direct application of factors onto the wound beds. We administered two growth factor DNAs, epidermal growth factor (EGF) and vascular endothelial growth factor (VEGF) into a cutaneous wound on diabetic mice. We compared the different characteristics of the healing wounds. METHODS Streptozotocin was injected intraperitoneally to induce diabetes into C57BL/6J mice. The ultrasound micro-bubble destruction method with SonoVue as a bubbling agent was used for non-viral gene delivery of EGF(828) and VEGF(165) DNAs. Each gene was modified for increasing efficacy as FRM-EGF(828) or minicircle VEGF(165). The degree of neoangiogenesis was assessed using qualitative laser Doppler flowmetry. We compared wound size and histological findings of the skin wounds in each group. RESULTS In both groups, accelerated wound closure was observed in the mice receiving gene therapy compared with non treated diabetic control mice. Blood flow detected by laser doppler flowmetry was better in the VEGF group than in the EGF group. Wound healing rates and histological findings were more accelerated in the EGF gene therapy group than the VEGF group, but were not statistically significant. CONCLUSION Both non-viral EGF and VEGF gene therapy administrations could improve the speed and quality of skin wound healing. However, the detailed histological characteristics of the healing wounds were different.
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Affiliation(s)
- Junghae Ko
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
| | - Haejung Jun
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
| | - Hyesook Chung
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
| | - Changshin Yoon
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
| | - Taekyoon Kim
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
| | - Minjeong Kwon
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
| | - Soonhee Lee
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
| | - Soojin Jung
- Department of Pathology, Inje University College of Medicine, Busan, Korea
| | - Mikyung Kim
- Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Jeong Hyun Park
- Molecular Therapy Laboratory, Paik Memorial Institute for Clinical Research, Busan, Korea
- Department of Internal Medicine, Inje University College of Medicine, Busan, Korea
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Kaushal R, Goldmann DA, Keohane CA, Abramson EL, Woolf S, Yoon C, Zigmont K, Bates DW. Medication errors in paediatric outpatients. BMJ Qual Saf 2010; 19:e30. [DOI: 10.1136/qshc.2008.031179] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [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 YT, Yoon HO, Yoon C, Woo NC. Arsenic species in ecosystems affected by arsenic-rich spring water near an abandoned mine in Korea. Environ Pollut 2009; 157:3495-3501. [PMID: 19596161 DOI: 10.1016/j.envpol.2009.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Revised: 06/09/2009] [Accepted: 06/10/2009] [Indexed: 05/28/2023]
Abstract
The objectives of this study were to quantitatively estimate the distribution of arsenic with its speciation and to identify potential pathways for transformation of arsenic species from samples of water, sediments, and plants in the ecosystem affected by the Cheongog Spring, where As(V) concentration reached levels up to 0.270 mg L(-1). After flowing about 100 m downstream, the arsenic level showed a marked reduction to 0.044 mg L(-1) (about 84% removal) without noticeable changes in major water chemistry. The field study and laboratory hydroponic experiments with the dominant emergent plants along the creek (water dropwort and thunbergian smartweed) indicated that arsenic distribution, reduction, and speciation appear to be controlled by, (i) sorption onto stream sediments in exchangeable fractions, (ii) bioaccumulation by and possible release from emergent plants, and (iii) transformation of As(V) to As(III) and organic species through biological activities.
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Affiliation(s)
- Y T Kim
- Department of Earth System Science, Yonsei University, 134 Shinchon-Dong, Sudaemoon-Gu, Seoul 120-749, Republic of Korea
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Jeong S, Doo S, Park H, Yoon C, Hong S, Byun S, Lee S. MP-17.12: A Study of Factors Predicting Female Bladder Outlet Obstruction Defined Using Pressure-flow Study. Urology 2009. [DOI: 10.1016/j.urology.2009.07.813] [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: 10/20/2022]
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Jeong S, Doo S, Park H, Yoon C, Hong S, Byun S, Lee S. UP-1.185: Urodynamic Comparison Between Complete and Incomplete Injury in Patients with Spinal Cord Injury: Can Urodynamic Study be Skipped in a Patient With Incomplete Injury? Urology 2009. [DOI: 10.1016/j.urology.2009.07.632] [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: 11/27/2022]
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Lee S, Hong S, Yoon C, Jeong S, Byun S, Park H, Doo S, Lee W, Kim D. UP-2.142: Impact of Bony Pelvic Dimensions on Performing Robot-Assisted Laparoscopic Prostatectomy. Urology 2009. [DOI: 10.1016/j.urology.2009.07.361] [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: 10/20/2022]
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Yoon C, Yu J, Du S, Park H, Kim S, Jeong S, Hong S, Byun S, Lee S. UP-3.007: Histone Deacetylase Inhibitor Trichostatin A Induces Apoptosis in Human Invasive Bladder Cancer through the Caspase Dependent Pathway. Urology 2009. [DOI: 10.1016/j.urology.2009.07.010] [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: 11/26/2022]
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Shim KS, Jung HJ, Na CS, Yoon C, Park GH. Effects of Taurine on Lipid Metabolism and Protein Synthesis in Poultry and Mice. Asian Australas J Anim Sci 2009. [DOI: 10.5713/ajas.2009.90024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hur M, Yoon C, Ko S, Lee H, Kim S, Park H, Han A, Kang S. 0213 Clinical characteristics of triple negative breast cancers. Breast 2009. [DOI: 10.1016/s0960-9776(09)70230-9] [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: 10/20/2022] Open
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Yoon C, Song H, Shin J. Abstract No. 375: A Covered, Retrievable Prostate Stent Placement in Hormone-Induced Canine Prostate Hyperplasia: Technical Feasibility and Histologic Changes of the Prostate. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.370] [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: 11/29/2022] Open
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Chang H, Heo C, Jeong J, Baek R, Minn K, Yoon C. Unilateral buttock reconstruction using contralateral inferior gluteal artery perforator flap with the aid of multi-detector CT. J Plast Reconstr Aesthet Surg 2008; 61:1534-8. [PMID: 17638601 DOI: 10.1016/j.bjps.2006.12.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 08/29/2006] [Revised: 11/27/2006] [Accepted: 12/27/2006] [Indexed: 11/18/2022]
Abstract
SUMMARY The applicability of inferior gluteal artery perforator (IGAP) flaps in breast reconstruction following breast cancer has been well described. However, the use of IGAP flaps in buttock augmentation has not been presented. We present the case of a female patient with buttock asymmetry and a deficiency of volume, who underwent buttock reconstruction based on a contralateral IGAP flap. Multidetector computed tomography (MDCT) was used to study donor and recipient areas, and allowed easy interpretation as it provided anatomical images and three-dimensional anatomy reconstructions. Based on a knowledge of individual anatomical perforating vessel distributions, safe perforator flaps can be designed. Moreover, we are convinced that buttock reconstruction using autologous tissue can be performed in a safe and reliable fashion using perforator flaps. Donor site morbidity was minimal and the muscle at the donor site was preserved. The contralateral buttock proved an excellent donor site for aesthetic unilateral buttock reconstruction and provided ample tissue in the described case.
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Affiliation(s)
- H Chang
- Department of Plastic and Reconstructive Surgery, The College of Medicine, Seoul National University, Chongno-gu, Seoul, South Korea
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Park Y, Kang S, Ko S, Lee H, Hur M, Kim J, Yoon C. Proposal for using an international unified draft for chemotherapeutic regimen time schedule table: Chemo Box. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70344-6] [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] Open
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Hur M, Kim J, Yoon C, Ko S, Lee H, Lee J, Kang S. Breast cancer screening in Korea. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70485-3] [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: 10/22/2022] Open
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