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Oh Y, Lee S, Lee NK, Rhee JK. Improving the Three-Dimensional Printability of Potato Starch Loaded onto Food Ink. J Microbiol Biotechnol 2024; 34:891-901. [PMID: 38379303 DOI: 10.4014/jmb.2311.11040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/17/2024] [Accepted: 01/24/2024] [Indexed: 02/22/2024]
Abstract
This study focuses on improving the 3D printability of pea protein with the help of food inks designed for jet-type 3D printers. Initially, the food ink base was formulated using nanocellulose-alginate with a gradient of native potato starch and its 3D printability was evaluated. The 3D-printed structures using only candidates for the food ink base formulated with or without potato starch exhibited dimensional accuracy exceeding 95% on both the X and Y axes. However, the accuracy of stacking on the Z-axis was significantly affected by the ink composition. Food ink with 1% potato starch closely matched the CAD design, with an accuracy of approximately 99% on the Z-axis. Potato starch enhanced the stacking of 3D-printed structures by improving the electrostatic repulsion, viscoelasticity, and thixotropic behavior of the food ink base. The 3D printability of pea protein was evaluated using the selected food ink base, showing a 46% improvement in dimensional accuracy on the Z-axis compared to the control group printed with a food ink base lacking potato starch. These findings suggest that starch can serve as an additive support for high-resolution 3D jet-type printing of food ink material.
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Affiliation(s)
- Yourim Oh
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seungmin Lee
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Nam Keun Lee
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jin-Kyu Rhee
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
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Heo EJ, Kim M, Park CG, Chang KH, Kim KH, Shim JB, Park YJ, Kim CY, Lee NK, Lee S. The Feasibility of Fast, Four-Dimensional Computed Tomography-Based O-Ring Linac Plans for Stereotactic Body Radiotherapy in Patients with Poor Performance Status. Int J Radiat Oncol Biol Phys 2023; 117:e672. [PMID: 37785984 DOI: 10.1016/j.ijrobp.2023.06.2120] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) As patients with poor performance status cannot endure long treatment times, it can lead to unplanned and prolonged radiation treatment or discontinuation of treatment. Moreover, prolonged radiation treatment appears to negatively affect survival for patients. We aimed to verify the feasibility of fast 4DCT-based O-ring linear accelerator (LINAC) treatment in lung 4D stereotactic body radiotherapy (SBRT). MATERIALS/METHODS This study included data of 38 patients who received lung 4D-SBRT. Gating20-70% plans were based on 4DCT data obtained at phase values ranging from 20-70% using a C-arm LINAC. Non-GatingFB plans were retrospectively established based on 4DCT data obtained at phase values of 0-90% using an O-ring LINAC. The prescribed dose of 4,800 cGy was delivered to PTV in four fractions. The conformity index (CI), homogeneity index (HI), and gradient measurement (GM) of the PTV were analyzed to compare dosimetric data between Gating20-70% and Non-GatingFB plans. Organs at risks (OARs) were analyzed in accordance with the RTOG 0915 protocol. Treatment delivery time and total monitor units (MU) were analyzed to compare the efficiency of treatment delivery. Statistical comparisons were performed using the Wilcoxon signed-rank test (p<0.05). RESULTS For the PTV, there was no significant difference in the CI or HI between Gating20-70% and Non-GatingFB plans (CI: 1.337±0.137, 1.335±0.174, HI: 0.939±0.015, 0.939±0.016, all at p>0.05). However, there was a significant difference in GM between Gating20-70% and Non-GatingFB plan (1.528±0.206 cm, 1.381±0.222 cm, p<0.001). For OARs, all plans met the criteria for dose constraint. There was a significant difference between Gating20-70% and Non-GatingFB plans except in the spinal cord. In particular, D1000cc and D1500cc values for the ipsilateral lung for Gating20-70% plans were 31.6% and 59.9% lower than those for Non-GatingFB plans (D1000cc: 50.780±132.061 cGy, 34.755±102.480 cGy, p<0.001, D1500cc: 6.641±14.598 cGy, 2.666±7.926 cGy, p<0.001). Treatment delivery time was 92% longer for Gating20-70% plans than for Non-GatingFB plans (5.0±0.4 min, 9.6±3.3 min, p = 0.043). The total MU value for Gating20-70% plans was 9.6% higher than that for Non-GatingFB plans (3665.8±230.7, 4016±236.9, p = 0.039). CONCLUSION When compared to OARs both plans were acceptable per RTOG-0915 protocol, but significant differences were between Non-GatingFB and Gating20-70% plans. However, treatment delivery time of Non-GatingFB plans decreased by 47.9% than Gating20-70% plans. We verified the feasibility of fast 4DCT-based O-ring LINAC treatment for patients who cannot endure long treatment times due to poor performance status in lung 4D-SBRT. In further study, we will analyze dosimetric differences and treatment delivery efficiency considering tumor motion according to tumor location.
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Affiliation(s)
- E J Heo
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea; Department of Bio-medical Science, Graduate School of Korea University, Sejong, Korea, Republic of (South) Korea
| | - M Kim
- Department of Biostatistics and Computing, Yonsei University Graduate school, Seoul, Korea, Republic of (South) Korea
| | - C G Park
- Department of Mathematics, Kyonggi University, Gyeonggi, Korea, Republic of (South) Korea
| | - K H Chang
- Department of Radiologic Science, Far East University, Chungcheongbuk-do, Korea, Republic of (South) Korea
| | - K H Kim
- Department of Neurosurgery, Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Korea, Republic of (South) Korea
| | - J B Shim
- Department of Radiation Oncology, Guro Hospital, Korea University Medical Center, Seoul, Korea, Republic of (South) Korea
| | - Y J Park
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - C Y Kim
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - N K Lee
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
| | - S Lee
- Department of Radiation Oncology, College of Medicine, Korea University, Seoul, Korea, Republic of (South) Korea
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Kang H, Oh Y, Lee NK, Rhee JK. Printing Optimization of 3D Structure with Lard-like Texture Using a Beeswax-Based Oleogels. J Microbiol Biotechnol 2022; 32:1573-1582. [PMID: 36398443 PMCID: PMC9843748 DOI: 10.4014/jmb.2209.09052] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 11/19/2022]
Abstract
In this study, we investigated the optimal conditions for 3D structure printing of alternative fats that have the textural properties of lard using beeswax (BW)-based oleogel by a statistical analysis. Products printed with over 15% BW oleogel at 50% and 75% infill level (IL) showed high printing accuracy with the lowest dimensional printing deviation for the designed model. The hardness, cohesion, and adhesion of printed samples were influenced by BW concentration and infill level. For multi-response optimization, fixed target values (hardness, adhesiveness, and cohesiveness) were applied with lard printed at 75% IL. The preparation parameters obtained as a result of multiple reaction prediction were 58.9% IL and 16.0% BW, and printing with this oleogel achieved fixed target values similar to those of lard. In conclusion, our study shows that 3D printing based on the BW oleogel system produces complex internal structures that allow adjustment of the textural properties of the printed samples, and BW oleogels could potentially serve as an excellent replacement for fat.
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Affiliation(s)
- Hyeona Kang
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yourim Oh
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Nam Keun Lee
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea,
N.K. Lee Phone: +82-2-3277-4297 Fax: +82-2-3277-4213 E-mail:
| | - Jin-Kyu Rhee
- Department of Food Science and Biotechnology, Ewha Womans University, Seoul 03760, Republic of Korea,Corresponding authors J.K. Rhee E-mail:
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Oh Y, Lee NK, Rhee J. Cartdridged Food Materials for 3D Printing of Alternative Meat: Regarding Modified Texture of 3D Printed Food according to the Ionic State of Particle Surface exposed on Protein Powder. FASEB J 2022. [DOI: 10.1096/fasebj.2022.36.s1.r6368] [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: 11/11/2022]
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Kang H, Lee NK, Rhee J. Food 3D printing using Beeswax Oleogels. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04487] [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: 11/11/2022]
Affiliation(s)
- Hyeona Kang
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Nam Keun Lee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Jin‐Kyu Rhee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
- SuFAB Inc.Chungcheongbuk‐do
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Affiliation(s)
- Jeong Bin Bae
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Yourim Oh
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Nam Keun Lee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Jin‐Kyu Rhee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
- SuFAB Inc.Chungcheongbuk‐do
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Jeong S, Lee NK, Rhee J. Characterization of Pullulan/PVP/Curcumin‐loaded fibers and films fabricated by geometrical conversion. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04488] [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: 11/11/2022]
Affiliation(s)
- Soyeong Jeong
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Nam Keun Lee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Jin‐Kyu Rhee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
- SuFAB Inc.Chungcheongbuk‐do
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Oh Y, Lee NK, Rhee J. Establishment of 3D Structuring of Resistant Starch. FASEB J 2021. [DOI: 10.1096/fasebj.2021.35.s1.04466] [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: 11/11/2022]
Affiliation(s)
- Yourim Oh
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Nam Keun Lee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
| | - Jin‐Kyu Rhee
- Department of Food Science and EngineeringEwha Womans UniversitySeoul
- SuFAB Inc.Chungcheongbuk‐do
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Khalid HR, Lee NK, Park S, Abbas N, Lee HK. Corrigendum: "Synthesis of geopolymer-supported zeolites via robust one-step method and their adsorption potential" [J. Hazard. Mater. 353 (2018) 522-533]. J Hazard Mater 2020; 391:121986. [PMID: 32044625 DOI: 10.1016/j.jhazmat.2019.121986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Hammad R Khalid
- Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - N K Lee
- Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-ro, Ilsanseo-gu, Goyang-si, 10223, South Korea
| | - Solmoi Park
- Department of Civil and Environmental Engineering, KAIST, Daehak-ro 291, Yuseong-gu, Daejeon, 34141, South Korea
| | - N Abbas
- Department of Chemical Engineering University of Hai'l, Hai'l, Saudi Arabia
| | - H K Lee
- Department of Civil and Environmental Engineering, KAIST, Daehak-ro 291, Yuseong-gu, Daejeon, 34141, South Korea.
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JEONG SOYEONG, Lee NK, Rhee JK. 3D Lamination of Fiber‐like Textures in Thin Filmed Food Materials. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.09704] [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: 11/11/2022]
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You JM, Kim TU, Kim S, Lee NK, Lee JW, Ryu H, Kim JH, Hong SB, Jeon TY, Park DY. Preoperative N stage evaluation in advanced gastric cancer patients using multidetector CT: can the sum of the diameters of metastatic LNs be used for N stage evaluation? Clin Radiol 2019; 74:782-789. [PMID: 31378300 DOI: 10.1016/j.crad.2019.06.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 06/28/2019] [Indexed: 12/23/2022]
Abstract
AIM To compare the diagnostic performance of total counts of metastatic lymph nodes (LN-sum) and conventional multidetector (MD) computed tomography (CT) staging in the nodal evaluation of advanced gastric cancer (AGC) patients. MATERIALS AND METHODS In total, 127 consecutive patients who underwent preoperative MDCT and gastrectomy for AGC were identified. Metastatic LNs on MDCT were defined as LNs with a short axis ≥8 mm, marked or heterogeneous enhancement, and morphological features (central necrosis, round shape, clustering). The sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) of the N-stage using LN-sum and conventional MDCT staging were generated and compared. In addition, metastatic LN counts between the MDCT and the histopathological examinations and correlation between LN-sum and histopathological nodal status were analysed. RESULTS The total counts of metastatic LNs on MDCT was significantly smaller than those detected in histopathological assessments (p<0.0001). LN-sum showed significant correlation with the pathological N stage and the number of metastatic LNs (rho=0.69, 0.73, p<0.0001). The areas under the receiver operating characteristic curve were 0.896, and 0.835, for N stage ≥N2 and N3, with cut-off values of 12.5 and 23.5 mm, respectively. LN-sum provided better diagnostic performance than conventional MDCT staging for discriminating N0-2 versus N3; sensitivity, accuracy, PPV and NPV of LN-sum were significantly higher (80.4 versus 52.2%, 81.1 versus 68.5%, 71.2 versus 57.1%, and 88 versus 74.1%). CONCLUSION LN-sum may be sufficiently useful in assessing the N3 stage of AGC and may help to plan appropriate therapy for AGC patients.
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Affiliation(s)
- J M You
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - T U Kim
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea.
| | - S Kim
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - N K Lee
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - J W Lee
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - H Ryu
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - J H Kim
- Department of Radiology, Medical Research Institute, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongsangnam-do, Republic of Korea
| | - S B Hong
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - T Y Jeon
- Department of Surgery, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
| | - D Y Park
- Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Medical Research Institute, Busan, Republic of Korea
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Khalid HR, Lee NK, Park SM, Abbas N, Lee HK. Synthesis of geopolymer-supported zeolites via robust one-step method and their adsorption potential. J Hazard Mater 2018; 353:522-533. [PMID: 29723813 DOI: 10.1016/j.jhazmat.2018.04.049] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/05/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
The present study proposes a robust one-step hydrothermal treatment method for synthesis of high strength geopolymer-supported zeolites utilizing industrial by-products (fly ash and blast furnace slag), which can be potentially used as bulk-type solid adsorbents. The results revealed that the geopolymer-supported zeolites, possessing distinct strengths, zeolite phases (Na-P1, Na-chabazite, and analcime) and pore features depending on the mix design and synthesis conditions, can be easily synthesized employing the proposed one-step method. The geopolymer-supported zeolites exhibited the characteristics of mesoporous materials which are typically desired for commercial adsorbents. The maximum adsorption capacity for Pb2+ was found to be about 37.9 mg/g which is relatively higher than the other bulk-type adsorbents reported for Pb2+ to date. Since industrial by-products are used for synthesis of these materials, it will help in reducing the environmental hazards associated with the permanent disposal of such by-products, with an added advantage that these bulk-type solid adsorbents can be easily retrieved after use unlike granular adsorbents.
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Affiliation(s)
- Hammad R Khalid
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea
| | - N K Lee
- Korea Institute of Civil Engineering and Building Technology, 283 Goyangdae-ro, Ilsanseo-gu, Goyang-si 10223, South Korea
| | - S M Park
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea
| | - N Abbas
- Department of Chemical Engineering, University of Hai'l, Hai'l, Saudi Arabia
| | - H K Lee
- Department of Civil and Environmental Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea.
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Lee NK, Cheon CJ, Rhee JK. Anti-Obesity Effect of Red Radish Coral Sprout Extract by Inhibited Triglyceride Accumulation in a Microbial Evaluation System and in High-Fat Diet-Induced Obese Mice. J Microbiol Biotechnol 2018. [DOI: 10.4014/jmb.1802.02005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Yang HJ, Kim MJ, Kang HJ, Lee HY, Park YM, Lee YH, Kang YG, Hwa GP, Kang YS, Jung YM, Lee NK, Park KH. Immunomodulating Properties of Polygonum multiflorum Extracts on Cyclophosphamide-induced Immunosuppression Model. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Lee NK. Oleaginous Yeast Rhodosporidium toruloides as a Tool for Rapid Evaluation of Anti-Obesity Candidates: Inhibitory Effect of Persimmon Leaf Fermentate on Lipid Accumulation. J Microbiol Biotechnol 2017; 27:1773-1777. [PMID: 28870008 DOI: 10.4014/jmb.1707.07062] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
The aim of this study was to examine the efficiency of Rhodosporidium toruloides as a new tool to evaluate the triglyceride (TG) reduction effects of anti-obesity candidate materials. Unfermented and fermented persimmon leaf hot water extracts (UFPLE and FPLE) were used as anti-obesity agents. The content of TG in R. toruloides treated with FPLE was less than those with UFPLE by about 11% (p < 0.05) relative to the control (R. toruloides incubated in YPD medium without the agents). Fat reduction in 3T3-L1 cells achieved by FPLE was about 13% higher than that achieved by UFPLE.
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Affiliation(s)
- Nam Keun Lee
- Department of Oriental Medicine Resources, Chonbuk National University, Iksan 54596, Republic of Korea
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Yun KY, Kim YH, Suh DS, Lee NK, Choi KU, Kim KH. Mixed endometrial stromal and smooth muscle tumor of the uterus in a postmenopausal woman: morphologic and immunohistochemical features. EUR J GYNAECOL ONCOL 2017; 38:319-322. [PMID: 29953805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mixed endometrial stromal and smooth muscle tumor of the uterus is a rare occurrence, and it is truly challenging to diagnose or dif- ferentiate mesenchymal tumors of the uterine corpus, due to their many overlapping features. In most cases, the gross pathology of mixed endometrial stromal and smooth muscle tumor differs from that of pure endometrial stromal and pure smooth muscle tumors. A 59-year-old postmenopausal woman presented with vaginal spotting, low abdominal pain, and an uterine mass. Subsequent pelvic magnetic resonance imaging revealed a 4.0x3.8x3.4-cm sized uterine mass with enhancement. The mass showed restricted diffusion on diffusion-weighted images, and thus, was suspected to be uterine sarcoma rather than degenerative leiomyoma. Levels of tumor markers, CA 125, CA 19-9, and SCC, were within their normal ranges. The patient underwent exploratory laparotomy. Morphological and immunohistochemical evaluations were performed, and a final diagnosis of mixed endometrial stromal and smooth muscle tumor of the uterus was rendered. Her postoperative course was uneventful, and aromatase inhibitor adjuvant therapy was administered.
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Ponsford J, Lee NK, Wong D, McKay A, Haines K, Alway Y, Downing M, Furtado C, O'Donnell ML. Efficacy of motivational interviewing and cognitive behavioral therapy for anxiety and depression symptoms following traumatic brain injury. Psychol Med 2016; 46:1079-1090. [PMID: 26708017 DOI: 10.1017/s0033291715002640] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [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] [Indexed: 11/06/2022]
Abstract
BACKGROUND Anxiety and depression are common following traumatic brain injury (TBI), often co-occurring. This study evaluated the efficacy of a 9-week cognitive behavioral therapy (CBT) program in reducing anxiety and depression and whether a three-session motivational interviewing (MI) preparatory intervention increased treatment response. METHOD A randomized parallel three-group design was employed. Following diagnosis of anxiety and/or depression using the Structured Clinical Interview for DSM-IV, 75 participants with mild-severe TBI (mean age 42.2 years, mean post-traumatic amnesia 22 days) were randomly assigned to an Adapted CBT group: (1) MI + CBT (n = 26), or (2) non-directive counseling (NDC) + CBT (n = 26); or a (3) waitlist control (WC, n = 23) group. Groups did not differ in baseline demographics, injury severity, anxiety or depression. MI and CBT interventions were guided by manuals adapted for individuals with TBI. Three CBT booster sessions were provided at week 21 to intervention groups. RESULTS Using intention-to-treat analyses, random-effects regressions controlling for baseline scores revealed that Adapted CBT groups (MI + CBT and NDC + CBT) showed significantly greater reduction in anxiety on the Hospital Anxiety and Depression Scale [95% confidence interval (CI) -2.07 to -0.06] and depression on the Depression Anxiety and Stress Scale (95% CI -5.61 to -0.12) (primary outcomes), and greater gains in psychosocial functioning on Sydney Psychosocial Reintegration Scale (95% CI 0.04-3.69) (secondary outcome) over 30 weeks post-baseline relative to WC. The group receiving MI + CBT did not show greater gains than the group receiving NDC + CBT. CONCLUSIONS Findings suggest that modified CBT with booster sessions over extended periods may alleviate anxiety and depression following TBI.
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Affiliation(s)
- J Ponsford
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - N K Lee
- National Centre for Education and Training on Addiction,Flinders University,SA,Australia
| | - D Wong
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - A McKay
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - K Haines
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - Y Alway
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - M Downing
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - C Furtado
- Monash-Epworth Rehabilitation Research Centre,School of Psychological Sciences, Monash University,Clayton,Victoria,Australia
| | - M L O'Donnell
- Phoenix Australia,University of Melbourne,Victoria,Australia
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Yoon WS, Lee NK, Lee JA, Yang DS, Kim CY, Son GS, Chang YW. Abstract P3-12-17: Can radiation dosimetric parameters explain severe skin reaction during adjuvant whole breast irradiation applying field-in-field technique? Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p3-12-17] [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
Aim: Although modern radiotherapy such as field-in-field technique decreased the radiation toxicity, skin reaction is still frequent and main problem during adjuvant whole breast irradiation. Our study investigated various radiation dosimetric and clinical parameters as the risk factors of severe skin reaction.
Methods: From January 2012 to December 2014, total 219 patients with breast conserving surgery and adjuvant whole breast irradiation were retrospectively reviewed. All patients took both whole breast irradiation (50 Gy/25 fractions) and boost to the tumor bed (10 - 15 Gy). Skin reaction was measured by comparing the photography of radiation field between the first day of whole breast irradiation and boost therapy. For each axilla and inferior fold, the intensity (score 1 to 5) and extent (score 0 to 1) of erythema were recorded and summed. The severe skin reaction was defined as score 5 or 6. The relations of various radiation dosimetric parameters for radiotherapy planning, personal breast characteristics and clinical factors to severe skin reaction were evaluated using the Logistic regression tests.
Results: Total 75 (34%) and 57 (26%) patients showed the severe skin reaction to axilla and inferior fold, respectively. The variables of P < 0.2 in univariate analyses including age, the body mass index, the breast height, the V100, the calculated point dose in radiation planning system, the breast separation, the field size, and the gradient of inferior fold entered the multivariate analyses. Age (P=0.013 (OR = 0.950, 95% CI 0.913 - 0.989)), the body mass index (P = 0.015 (OR = 1.123, 95% CI 1.023 - 1.233)), the calculated axilla point dose (P = 0.091 (OR = 1.064, 95% CI 0.990 - 1.142)), and the gradient of inferior fold (P = 0.073 (OR = 1.029, 95% CI 0.997 - 1.063)) were risk factors for severe axilla skin reaction, whereas age (P = 0.018 (OR = 0.948, 95% CI 0.907 - 0.991)) and the V100 (P < 0.001 (OR = 1.005, 95% CI 1.003 - 1.007)) were for severe inferior fold skin reaction.
Conclusion: In addition to clinical factor and personal breast characteristics, the radiation dosimetric parameters such as calculated point dose and V100 could be another predictive factors of severe skin reaction.
Citation Format: Yoon WS, Lee NK, Lee JA, Yang DS, Kim CY, Son GS, Chang YW. Can radiation dosimetric parameters explain severe skin reaction during adjuvant whole breast irradiation applying field-in-field technique?. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P3-12-17.
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Affiliation(s)
- WS Yoon
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - NK Lee
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - JA Lee
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - DS Yang
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - CY Kim
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - GS Son
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
| | - YW Chang
- Ansan Hospital, Korea University, Ansan, Gyeonggi-do, Korea
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Lee NK, Nyakudya E, Jeong YS. Bioconversion of Platycodon Grandiflorum
Saponins by the Platycodin D-Converting Microorganism, Yeast Cyberlindnera Fabianii. J Food Biochem 2015. [DOI: 10.1111/jfbc.12217] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Nam Keun Lee
- Research Center for Industrial Development of Biofood Materials; Chonbuk National University; Jeonbuk 561-756 Korea
- Department of Food Science and Technology; Chonbuk National University; Jeonbuk 561-756 Korea
| | - Elijah Nyakudya
- Department of Food Science and Technology; Chonbuk National University; Jeonbuk 561-756 Korea
| | - Yong-Seob Jeong
- Department of Food Science and Technology; Chonbuk National University; Jeonbuk 561-756 Korea
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Lee NK, Jeong JH, Oh J, Kim Y, Ha YS, Jeong YS. Conversion of Flavonols Kaempferol and Quercetin in Mulberry (M
orus Alba
L.) Leaf Using Plant-Fermenting L
actobacillus Plantarum. J Food Biochem 2015. [DOI: 10.1111/jfbc.12176] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nam Keun Lee
- Department of Food Science and Technology; Chonbuk National University; Jeonju 561-756 Korea
- Research Center for Industrial Development of Biofood Materials; Chonbuk National University; Jeonju 561-756 Korea
| | - Jong Hoon Jeong
- Department of Food Science and Technology; Chonbuk National University; Jeonju 561-756 Korea
| | - Jisun Oh
- Department of Food Science and Technology; Chonbuk National University; Jeonju 561-756 Korea
- Research Center for Industrial Development of Biofood Materials; Chonbuk National University; Jeonju 561-756 Korea
| | - Younghoon Kim
- BK21 Plus Graduate Program; Department of Animal Science; Institute Agricultural Science & Technology; Chonbuk National University; Jeonju 561-756 Korea
| | - Young Sik Ha
- R&D Center; Seoul Dairy Cooperative; Ansan Korea
| | - Yong-Seob Jeong
- Department of Food Science and Technology; Chonbuk National University; Jeonju 561-756 Korea
- Research Center for Industrial Development of Biofood Materials; Chonbuk National University; Jeonju 561-756 Korea
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Hsu HT, Chen HM, Yang Z, Wang J, Lee NK, Burger A, Zaret K, Liu T, Levine E, Mango SE. TRANSCRIPTION. Recruitment of RNA polymerase II by the pioneer transcription factor PHA-4. Science 2015; 348:1372-6. [PMID: 26089518 DOI: 10.1126/science.aab1223] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Pioneer transcription factors initiate cell-fate changes by binding to silent target genes. They are among the first factors to bind key regulatory sites and facilitate chromatin opening. Here, we identify an additional role for pioneer factors. In early Caenorhabditis elegans foregut development, the pioneer factor PHA-4/FoxA binds promoters and recruits RNA polymerase II (Pol II), often in a poised configuration in which Pol II accumulates near transcription start sites. At a later developmental stage, PHA-4 promotes chromatin opening. We found many more genes with poised RNA polymerase than had been observed previously in unstaged embryos, revealing that early embryos accumulate poised Pol II and that poising is dynamic. Our results suggest that Pol II recruitment, in addition to chromatin opening, is an important feature of PHA-4 pioneer factor activity.
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Affiliation(s)
- H-T Hsu
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA
| | - H-M Chen
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA
| | - Z Yang
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - J Wang
- Department of Biochemistry, University at Buffalo, Buffalo, NY, USA
| | - N K Lee
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA
| | - A Burger
- Department of Physics and Center for Systems Biology, Harvard University, Cambridge, MA, USA
| | - K Zaret
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - T Liu
- Department of Biochemistry, University at Buffalo, Buffalo, NY, USA. Department of Biostatistics, University at Buffalo, Buffalo, NY 14214, USA
| | - E Levine
- Department of Physics and Center for Systems Biology, Harvard University, Cambridge, MA, USA
| | - S E Mango
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA.
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Jeong JH, Lee NK, Cho SH, Jeong DY, Jeong YS. Enhancement of 1-deoxynojirimycin content and α-glucosidase inhibitory activity in mulberry leaf using various fermenting microorganisms isolated from Korean traditional fermented food. BIOTECHNOL BIOPROC E 2015. [DOI: 10.1007/s12257-014-0277-0] [Citation(s) in RCA: 13] [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: 10/24/2022]
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Nyakudya E, Jeong JH, Lee NK, Jeong YS. Platycosides from the Roots of Platycodon grandiflorum and Their Health Benefits. Prev Nutr Food Sci 2014; 19:59-68. [PMID: 25054103 PMCID: PMC4103729 DOI: 10.3746/pnf.2014.19.2.059] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 04/10/2014] [Indexed: 11/06/2022] Open
Abstract
The extracts and pure saponins from the roots of Platycodon grandiflorum (PG) are reported to have a wide range of health benefits. Platycosides (saponins) from the roots of PG are characterized by a structure containing a triterpenoid aglycone and two sugar chains. Saponins are of commercial significance, and their applications are increasing with increasing evidence of their health benefits. The biological effects of saponins include cytotoxic effects against cancer cells, neuroprotective activity, antiviral activity, and cholesterol lowering effects. Saponins with commercial value range from crude plant extracts, which can be used for their foaming properties, to high purity saponins such as platycodin D, which can be used for its health applications (e.g., as a vaccine adjuvant). This review reveals that platycosides have many health benefits and have the potential to be used as a remedy against many of the major health hazards (e.g., cancer, obesity, alzheimer's) faced by populations around the world. Methods of platycoside purification and analysis are also covered in this review.
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Affiliation(s)
- Elijah Nyakudya
- Research Center for Industrial Development of Biofood Materials, Chonbuk National University, Jeonbuk 561-756, Korea ; Department of Food Science and Technology, Chonbuk National University, Jeonbuk 561-756, Korea
| | - Jong Hoon Jeong
- Research Center for Industrial Development of Biofood Materials, Chonbuk National University, Jeonbuk 561-756, Korea
| | - Nam Keun Lee
- Research Center for Industrial Development of Biofood Materials, Chonbuk National University, Jeonbuk 561-756, Korea
| | - Yong-Seob Jeong
- Department of Food Science and Technology, Chonbuk National University, Jeonbuk 561-756, Korea
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Yang DS, Yoon WS, Lee JA, Lee NK, Lee S, Kim CY, Yim HJ, Lee SH, Chung HH, Cha SH. The effectiveness of gadolinium MRI to improve target delineation for radiotherapy in hepatocellular carcinoma: a comparative study of rigid image registration techniques. Phys Med 2014; 30:676-81. [PMID: 24870246 DOI: 10.1016/j.ejmp.2014.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 04/14/2014] [Accepted: 05/06/2014] [Indexed: 11/29/2022] Open
Abstract
To achieve consistent target delineation in radiotherapy for hepatocellular carcinoma (HCC), image registration between simulation CT and diagnostic MRI was explored. Twenty patients with advanced HCC were included. The median interval between MRI and CT was 11 days. CT was obtained with shallow free breathing and MRI at exhale phase. On each CT and MRI, the liver and the gross target volume (GTV) were drawn. A rigid image registration was taken according to point information of vascular bifurcation (Method[A]) and pixel information of volume of interest only including the periphery of the liver (Method[B]) and manually drawn liver (Method[C]). In nine cases with an indefinite GTV on CT, a virtual sphere was generated at the epicenter of the GTV. The GTV from CT (VGTV[CT]) and MRI (VGTV[MR]) and the expanded GTV from MRI (V+GTV[MR]) considering geometrical registration error were defined. The underestimation (uncovered V[CT] by V[MR]) and the overestimation (excessive V[MR] by V[CT]) were calculated. Through a paired T-test, the difference between image registration techniques was analyzed. For method[A], the underestimation rates of VGTV[MR] and V+GTV[MR] were 16.4 ± 8.9% and 3.2 ± 3.7%, and the overestimation rates were 16.6 ± 8.7% and 28.4 ± 10.3%, respectively. For VGTV[MR] and V+GTV[MR], the underestimation rates and overestimation rates of method[A] were better than method[C]. The underestimation rates and overestimation rates of the VGTV[MR] were better in method[B] than method[C]. By image registration and additional margin, about 97% of HCC could be covered. Method[A] or method[B] could be recommended according to physician preference.
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Affiliation(s)
- D S Yang
- Department of Radiation Oncology, Guro Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - W S Yoon
- Department of Radiation Oncology, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea.
| | - J A Lee
- Department of Radiation Oncology, Guro Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - N K Lee
- Department of Radiation Oncology, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - S Lee
- Department of Radiation Oncology, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - C Y Kim
- Department of Radiation Oncology, Anam Hospital, College of Medicine, Korea University, Seoul, Republic of Korea
| | - H J Yim
- Department of Internal Medicine, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - S H Lee
- Department of Radiology, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - H H Chung
- Department of Radiology, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
| | - S H Cha
- Department of Radiology, Ansan Hospital, College of Medicine, Korea University, Ansan, Republic of Korea
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Noh JM, Park W, Suh CO, Keum KC, Kim YB, Shin KH, Kim K, Chie EK, Ha SW, Kim SS, Ahn SD, Shin HS, Kim JH, Lee HS, Lee NK, Huh SJ, Choi DH. Is elective nodal irradiation beneficial in patients with pathologically negative lymph nodes after neoadjuvant chemotherapy and breast-conserving surgery for clinical stage II-III breast cancer? A multicentre retrospective study (KROG 12-05). Br J Cancer 2014; 110:1420-6. [PMID: 24481403 PMCID: PMC3960607 DOI: 10.1038/bjc.2014.26] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/29/2013] [Accepted: 01/08/2014] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND To evaluate the effects of elective nodal irradiation (ENI) in clinical stage II-III breast cancer patients with pathologically negative lymph nodes (LNs) (ypN0) after neoadjuvant chemotherapy (NAC) followed by breast-conserving surgery (BCS) and radiotherapy (RT). METHODS We retrospectively analysed 260 patients with ypN0 who received NAC followed by BCS and RT. Elective nodal irradiation was delivered to 136 (52.3%) patients. The effects of ENI on survival outcomes were evaluated. RESULTS After a median follow-up period of 66.2 months (range, 15.6-127.4 months), 26 patients (10.0%) developed disease recurrence. The 5-year locoregional recurrence-free survival and disease-free survival (DFS) for all patients were 95.5% and 90.5%, respectively. Pathologic T classification (0-is vs 1 vs 2-4) and the number of LNs sampled (<13 vs ≥13) were associated with DFS (P=0.0086 and 0.0012, respectively). There was no significant difference in survival outcomes according to ENI. Elective nodal irradiation also did not affect survival outcomes in any of the subgroups according to pathologic T classification or the number of LNs sampled. CONCLUSIONS ENI may be omitted in patients with ypN0 breast cancer after NAC and BCS. But until the results of the randomised trials are available, patients should be put on these trials.
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Affiliation(s)
- J M Noh
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, Republic of Korea
| | - W Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, Republic of Korea
| | - C-O Suh
- Department of Radiation Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
| | - K C Keum
- Department of Radiation Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
| | - Y B Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
| | - K H Shin
- Proton Therapy Center, Research Institute and Hospital, National Cancer Center, 323 Ilsan-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do 410-769, Republic of Korea
| | - K Kim
- Department of Radiation Oncology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 110-799, Republic of Korea
| | - E K Chie
- Department of Radiation Oncology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 110-799, Republic of Korea
| | - S W Ha
- Department of Radiation Oncology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 110-799, Republic of Korea
| | - S S Kim
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan, College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea
| | - S D Ahn
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan, College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea
| | - H S Shin
- Department of Radiation Oncology, Bundang CHA Hospital, School of Medicine, CHA University, 59 Yatap-ro, Bundang-gu, Seongnam-si, Gyeonggi-do 463-712, Republic of Korea
| | - J H Kim
- Department of Radiation Oncology, Dongsan Medical Center, Keimyung University School of Medicine, 56 Dalseong-ro, Jung-gu, Daegu 700-712, Republic of Korea
| | - H-S Lee
- Department of Radiation Oncology, Dong-A University Hospital, Dong-A University School of Medicine, 26 Daesingongwon-ro, Seo-gu, Busan 602-715, Republic of Korea
| | - N K Lee
- Department of Radiation Oncology, Korea Medical Center, Korea University School of Medicine, 73 Inchon-ro, Seongbuk-gu, Seoul 136-705, Republic of Korea
| | - S J Huh
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, Republic of Korea
| | - D H Choi
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 135-710, Republic of Korea
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Jung SH, Park JW, Cho IJ, Lee NK, Yeo IC, Kim BY, Kim HK, Hahm YT. Characterization of Lactic Acid Bacteria Isolated from Sauce-type Kimchi. Prev Nutr Food Sci 2014; 17:217-22. [PMID: 24471087 PMCID: PMC3866744 DOI: 10.3746/pnf.2012.17.3.217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 09/10/2012] [Indexed: 11/06/2022] Open
Abstract
This study was carried out to investigate the isolation and characterization of lactic acid bacteria (LAB) from naturally fermented sauce-type kimchi. Sauce-type kimchi was prepared with fresh, chopped ingredients (Korean cabbage, radish, garlic, ginger, green onion, and red pepper). The two isolated bacteria from sauce-type kimchi were identified as Pediococcus pentosaceus and Lactobacillus brevis by 16S rDNA sequencing and tentatively named Pediococcus sp. IJ-K1 and Lactobacillus sp. IJ-K2, respectively. Pediococcus sp. IJ-K1 was isolated from the early and middle fermentation stages of sauce-type kimchi whereas Lactobacillus sp. IJ-K2 was isolated from the late fermentation stage. The resistance of Pediococcus sp. IJ-K1 and Lactobacillus sp. IJ-K2 to artificial gastric and bile acids led to bacterial survival rates that were 100% and 84.21%, respectively.
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Affiliation(s)
- Suk Hee Jung
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
| | - Joung Whan Park
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
| | - Il Jae Cho
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
| | - Nam Keun Lee
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
| | - In-Cheol Yeo
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
| | - Byung Yong Kim
- Department of Food Science and Biotechnology, Kyung Hee University, Gyeonggi 446-701, Korea
| | - Hye Kyung Kim
- Department of Food Science and Biotechnology, Hanseo University, Chungnam 356-706, Korea
| | - Young Tae Hahm
- Department of Biotechnology (BK21 Program), Chung-Ang University, Gyeonggi 456-756, Korea
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Lee NK, Kim S, Kim TU, Kim DU, Seo HI, Jeon TY. Diffusion-weighted MRI for differentiation of benign from malignant lesions in the gallbladder. Clin Radiol 2013; 69:e78-85. [PMID: 24290779 DOI: 10.1016/j.crad.2013.09.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [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: 04/03/2013] [Revised: 09/13/2013] [Accepted: 09/20/2013] [Indexed: 02/07/2023]
Abstract
AIM To investigate the value of diffusion-weighted imaging (DWI) for differentiating benign from malignant gallbladder lesions. MATERIALS AND METHODS One hundred and twenty-six patients who had undergone magnetic resonance imaging (MRI) with DWI, in whom the histopathological diagnosis of their gallbladder lesions was confirmed by biopsy or surgery were retrospectively analysed. Thirty-six malignant and 90 benign lesions were included. Two radiologists categorized gallbladder lesions into seven types on two imaging sets [T2-weighted imaging (WI) alone and combined T2WI and DWI (b = 800 s/mm(2))] according to the presence of wall thickening, layered patterns, morphology of the mass, and diffusion restriction. Disagreements were resolved in consensus. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of each imaging set for diagnosing gallbladder carcinoma were calculated. The diagnostic performance of each imaging set was calculated using receiver operating characteristic (ROC) curve analysis. Additionally, ADC values of malignant and benign gallbladder lesions were compared separately for 1.5 and 3 T MRI. RESULTS The sensitivity, specificity, PPV, and NPV of diagnosis at T2WI were 97.2%, 86.7%, 74.5%, and 98.7%, respectively. The sensitivity, specificity, PPV, and NPV using combined T2WI and DWI were 97.2%, 92.2%, 83.3%, and 98.8%, respectively. Diagnostic accuracy for gallbladder carcinoma slightly improved after adding DWI, from 0.92 to 0.95 (p < 0.05). ADC values for gallbladder carcinoma were significantly lower than those for benign lesions. Mean ADC values of malignant and benign lesions were 0.97 ± 0.25 × 10(-3) and 1.72 ± 0.56 × 10(-3) mm(2)/s, respectively, at 1.5 T (p < 0.001), and 1.04 ± 0.38 × 10(-3) and 2.2 ± 0.72 × 10(-3) mm(2)/s, respectively, at 3 T (p < 0.001). CONCLUSION DWI can improve diagnostic accuracy for differentiating benign from malignant gallbladder lesions.
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Affiliation(s)
- N K Lee
- Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
| | - S Kim
- Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea.
| | - T U Kim
- Department of Radiology, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - D U Kim
- Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
| | - H I Seo
- Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
| | - T Y Jeon
- Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Republic of Korea
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Yeo IC, Lee NK, Yang BW, Hahm YT. RNA-seq Analysis of Antibiotic-Producing Bacillus subtilis SC-8 in Response to Signal Peptide PapR of Bacillus cereus. Appl Biochem Biotechnol 2013; 172:580-94. [DOI: 10.1007/s12010-013-0516-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 09/15/2013] [Indexed: 01/27/2023]
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Kim TU, Kim S, Lee JW, Lee NK, Jeon TY, Park DY. MDCT features in the differentiation of T4a gastric cancer from less-advanced gastric cancer: significance of the hyperattenuating serosa sign. Br J Radiol 2013; 86:20130290. [PMID: 23873904 DOI: 10.1259/bjr.20130290] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE The purpose of our study was to evaluate CT findings to differentiate between T4a and less advanced gastric cancers. METHODS The institutional review board approved this study and waived informed consent. This study included 228 retrospectively identified patients with surgically confirmed gastric cancer (138 T1, 25 T2, 24 T3 and 41 T4a) and who had also undergone pre-operative CT scan. Transverse and multiplanar reconstruction scans were reviewed in consensus by two other blinded radiologists. The following CT findings that differentiate T4a from less advanced cancers were evaluated: nodular or an irregular outer layer of the gastric wall, haziness of the perigastric fat and a hyperattenuating serosa sign. The CT features of T4a and less advanced gastric cancers were compared by means of univariate and multivariate analyses. RESULTS In univariate analysis, nodular or an irregular outer layer of the gastric wall, haziness of the perigastric fat and the hyperattenuating serosa sign were significant in differentiation between T4a and less advanced gastric cancers. In addition, nodular or an irregular outer layer of the gastric wall and the hyperattenuating serosa sign were significant in differentiation between T3 and T4a. In multivariate logistic analysis, the hyperattenuating serosa sign was the most significant finding in differentiation between T3 and T4a (odds ratio, 4.210; 95% confidence intervals, 1.581-11.214; p=0.004). CONCLUSION The hyperattenuating serosa sign may be a useful CT finding in differentiation between T4a and less-advanced gastric cancers. ADVANCES IN KNOWLEDGE The hyperattenuating serosa sign is associated with gastric cancer with invading the serosa and can facilitate planning of the optimal pre-operative evaluation and treatment.
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Affiliation(s)
- T U Kim
- Department of Radiology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Republic of Korea
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Kim JH, Kang YJ, Kim DS, Lee CH, Jeon YS, Lee NK, Oh MH. The relationship between mast cell density and tumour grade in transitional cell carcinoma of the bladder. J Int Med Res 2012; 39:1675-81. [PMID: 22117967 DOI: 10.1177/147323001103900509] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study investigated the relationship between mast cell numbers and the grade of bladder transitional cell carcinoma (TCC). Bladder TCC biopsies were obtained via transurethral resection and 45 stage T1 specimens were included in the study. Specimens were sorted into two groups, low grade (grade I) and high grade (grades II and III). Samples were stained using haematoxylin and eosin, toluidine blue and immunohistochemical staining for tryptase. Mast cells were examined by light microscopy and cell density was recorded. Mast cell density was significantly higher in high-grade TCC than low-grade TCC. There was also a significant relationship between the number of mast cells identified using toluidine blue staining or immunohistochemical staining for tryptase. Detailed studies of mast cell function will enable the development of more effective antitumour therapies via mast cell manipulation.
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Affiliation(s)
- J H Kim
- Department of Urology, Korea University Hospital, Korea University College of Medicine, Ansan, Republic of Korea
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Yeo IC, Lee NK, Cha CJ, Hahm YT. Interspecies interaction of signal peptide PapR secreted by Bacillus cereus and its effect on production of antimicrobial peptide. Appl Biochem Biotechnol 2012; 166:700-10. [PMID: 22101448 DOI: 10.1007/s12010-011-9459-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 10/24/2011] [Indexed: 12/11/2022]
Abstract
This study was carried out to investigate the interspecies interaction of PapR peptide secreted by Bacillus cereus on production of BSAP-254, an antimicrobial peptide produced by Bacillus subtilis SC-8 isolated from the Korean fermented soybean paste and exhibited narrow antagonistic activity against the B. cereus group, but not against other foodborne pathogens. PapR is a signal peptide that activates PlcR, which is a pleiotropic regulator controlling the expression of various virulence factors in B. cereus. When B. subtilis SC-8 was co-cultured with B. cereus, it completely inhibited the growth of B. cereus within 12 h, and the rate of BSAP-254 production was increased 34.2% at 12 h. Furthermore, 5 μM of synthetic PapR peptide added to the culture of B. subtilis SC-8 increased the rate of BSAP-254 production up to 59.7%. The growth of B. subtilis SC-8, however, was not significantly different with or without the addition of PapR. When B. cereus papR mutant was co-cultured with B. subtilis SC-8, the growth of the mutant was not inhibited and the rate of BSAP-254 production was decreased by 45%.
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Affiliation(s)
- In-Cheol Yeo
- Department of Biotechnology (BK21 Program), Chung-Ang University, Anseong 456-756, Republic of Korea
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Yeo IC, Lee NK, Hahm YT. Genome sequencing of Bacillus subtilis SC-8, antagonistic to the Bacillus cereus group, isolated from traditional Korean fermented-soybean food. J Bacteriol 2012; 194:536-7. [PMID: 22207744 PMCID: PMC3256679 DOI: 10.1128/jb.06442-11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 11/07/2011] [Indexed: 11/20/2022] Open
Abstract
Bacillus subtilis SC-8 is a Gram-positive bacterium displaying narrow antagonistic activity for the Bacillus cereus group. B. subtilis SC-8 was isolated from Korean traditional fermented-soybean food. Here we report the draft genome sequence of B. subtilis SC-8, including biosynthetic genes for antibiotics that may have beneficial effects for control of food-borne pathogens.
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Affiliation(s)
- In-Cheol Yeo
- Department of Biotechnology (BK21 Program), Chung-Ang University, An-seong, Republic of Korea
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Lee NK, Yeo IC, Park JW, Hahm YT. Growth Inhibition and Induction of Stress Protein, GroEL, of Bacillus cereus Exposed to Antibacterial Peptide Isolated from Bacillus subtilis SC-8. Appl Biochem Biotechnol 2011; 165:235-42. [DOI: 10.1007/s12010-011-9246-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2011] [Accepted: 04/04/2011] [Indexed: 01/17/2023]
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Lee NK, Kim S, Lee JW, Jeong YJ, Lee SH, Heo J, Kang DH. CT differentiation of pyogenic liver abscesses caused by Klebsiella pneumoniae vs non-Klebsiella pneumoniae. Br J Radiol 2010; 84:518-25. [PMID: 21081584 DOI: 10.1259/bjr/23004588] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Klebsiella pneumoniae is one of the organisms most commonly isolated from pyogenic liver abscesses in Asian populations. We compared CT findings in liver abscesses caused by K. pneumoniae with those caused by other bacterial pathogens. METHODS Of 214 patients with liver abscesses examined over a 5 year period, 129 patients with positive blood or aspirate cultures were enrolled. The patients were divided into two groups: the K. pneumoniae monomicrobial liver abscess (KLA) group (n = 59) and the non-K. pneumoniae monomicrobial or polymicrobial liver abscess (non-KLA) group (n = 70). Two radiologists blinded to the culture results evaluated the CT images, recording the number, size, location and configuration of abscesses, the thickness of the abscess wall, the pattern of rim enhancement, septal enhancement, the double target sign, internal necrotic debris, internal gas bubbles and underlying biliary disease. The presence of diabetes and metastatic infection was also compared between groups. Statistical analyses were performed using univariate (Student's t-test and χ(2) test) and multivariate analyses. RESULTS Multivariate analysis showed that a thin wall, necrotic debris, metastatic infection and the absence of underlying biliary disease were the most significant predictors of KLA. When three of the four criteria were used in combination, a specificity of 98.6% was achieved for the diagnosis of KLA. CONCLUSION A thin-walled abscess, internal necrotic debris, the presence of metastatic infection and the absence of underlying biliary disease may be useful CT findings in the early diagnosis of K. pneumoniae liver abscesses.
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Affiliation(s)
- N K Lee
- Department of Radiology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Pusan National University, #1-10 Ami-Dong, Busan, Republic of Korea
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Lee NK, Yeo IC, Park JW, Kang BS, Hahm YT. Isolation and characterization of a novel analyte from Bacillus subtilis SC-8 antagonistic to Bacillus cereus. J Biosci Bioeng 2010; 110:298-303. [PMID: 20547349 DOI: 10.1016/j.jbiosc.2010.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/03/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
Abstract
In this study, an effective substance was isolated from Bacillus subtilis SC-8, which was obtained from traditionally fermented soybean paste, cheonggukjang. The substance was purified by HPLC, and its properties were analyzed. It had an adequate antagonistic effect on Bacilluscereus, and its spectrum of activity was narrow. When tested on several gram-negative and gram-positive foodborne pathogenic bacteria such as Salmonella enterica, Salmonella enteritidis, Staphylococcus aureus, and Listeria monocytogenes, no antagonistic effect was observed. Applying the derivative from B. subtilis SC-8 within the same genus did not inhibit the growth of major soybean-fermenting bacteria such as Bacillus subtilis, Bacillus licheniformis, and Bacillus amyloquefaciens. The range of pH stability of the purified antagonistic substance was wide (from 4.0 to >10.0), and the substance was thermally stable up to 60 degrees C. In the various enzyme treatments, the antagonistic activity of the purified substance was reduced with proteinase K, protease, and lipase; its activity was partially destroyed with esterase. Spores of B. cereus did not grow at all in the presence of 5mug/mL of the purified antagonistic substance. The isolated antagonistic substance was thought to be an antibiotic-like lipopeptidal compound and was tentatively named BSAP-254 because it absorbed to UV radiation at 254nm.
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Affiliation(s)
- Nam Keun Lee
- Department of Biotechnology (BK21 Program), Chung-Ang University, An-seong, 456-756, Republic of Korea
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Lee NK, Cho IJ, Park JW, Kim BY, Hahm YT. Characteristics of Cheonggukjang produced by the rotative fermentation method. Food Sci Biotechnol 2010. [DOI: 10.1007/s10068-010-0016-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Cho IJ, Lee NK, Hahm YT. Characterization of Lactobacillus spp. isolated from the feces of breast-feeding piglets. J Biosci Bioeng 2009; 108:194-8. [DOI: 10.1016/j.jbiosc.2009.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 03/13/2009] [Accepted: 03/23/2009] [Indexed: 11/27/2022]
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Lee NK, Karsenty G. Reciprocal regulation of bone and energy metabolism. J Musculoskelet Neuronal Interact 2008; 8:351. [PMID: 19147972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- N K Lee
- Department of Genetics and Development, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
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Cohen-Tannoudji L, Bertrand E, Baudry J, Robic C, Goubault C, Pellissier M, Johner A, Thalmann F, Lee NK, Marques CM, Bibette J. Measuring the kinetics of biomolecular recognition with magnetic colloids. Phys Rev Lett 2008; 100:108301. [PMID: 18352236 DOI: 10.1103/physrevlett.100.108301] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Indexed: 05/26/2023]
Abstract
We introduce a general methodology based on magnetic colloids to study the recognition kinetics of tethered biomolecules. Access to the full kinetics of the reaction is provided by an explicit measure of the time evolution of the reactant densities. Binding between a single ligand and its complementary receptor is here limited by the colloidal rotational diffusion. It occurs within a binding distance that can be extracted by a reaction-diffusion theory that properly accounts for the rotational Brownian dynamics. Our reaction geometry allows us to probe a large diversity of bioadhesive molecules and tethers, thus providing a quantitative guidance for designing more efficient reactive biomimetic surfaces, as required for diagnostic, therapeutic, and tissue engineering techniques.
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Affiliation(s)
- L Cohen-Tannoudji
- ESPCI, UMR 7612, Laboratoire Colloïdes et Matériaux Divisés, ParisTech, 10 rue Vauquelin, Paris, F-75005 France
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Derenko MV, Lunkina AV, Maliarchuk BA, Zakharov IA, Tsedev T, Park KS, Cho YM, Lee NK, Chu CH. [Restriction polymorphism of mitochondrial DNA in Koreans and Mongolians]. Genetika 2004; 40:1562-1570. [PMID: 15612576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Using the data on mitochondrial DNA (mtDNA) restriction polymorphism, the gene pools of Koreans (N = 164) and Mongolians (N = 48) were characterized. It was demonstrated that the gene pools were represented by the common set of mtDNA haplogroups of East Asian origin (M*, M7, M8a, M10, C, D4, G*, G2, A, B*, B5, F1, and N*). In addition to this set, mtDNA haplogroups D5 and Y were identified in Koreans while Mongolians possessed haplogroup Z. Only in Mongolians, a European component with the frequency of 10.4% and represented by the mtDNA types belonging to haplogroups K, U4, and N1, was identified. Phylogenetic and statistical analyses of the data on mtDNA variation in the populations of South Siberia, Central, and East Asia suggested the existence of interpopulation differentiation within these regions, the main role in which was played by the geographical and linguistic factors. Analysis of the pairwise F(ST) distances demonstrated close genetic similarity of Koreans to Northern Chinese, which in turn, were clearly different from Southern Chinese populations. Mongolians occupied an intermediate position between the ethnic groups of South Siberia and Central/East Asia.
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Abstract
A case is reported of anuria and urinary ascites secondary to bilateral ureteropelvic obstruction by fungal balls. Management consisted of bilateral nephrostomy drainage with local irrigation with amphotericin B, and systemic antifungal treatment without surgery. Aspiration by paracentesis was performed for the urinary ascites and continuous drainage through an 8 Fr pig tail catheter for the urinoma. The literature on renal fungus balls in neonates and infants is reviewed.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Seoul, Korea.
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Ku JH, Ahn HC, Kim ME, Lee NK, Park YH. Contralateral hernias or hydroceles in men with unilateral diseases. Acta Paediatr 2003; 92:640-641. [PMID: 12839303 DOI: 10.1080/08035350310011687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
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Abstract
OBJECTIVES To assess the prevalence of circumcision in South Korean young men dwelling in the community, investigate attitudes and perspectives about circumcision, and how they perceive physician involvement in the decision process. METHODS Between May and November 2001, this cross sectional survey was performed. Of 27 202 men aged 20 years dwelling in the community of Choong-chung South Province, 2700 were randomly selected at a 10.0% sampling fraction after a sampling process by census district and a total of 1742 (64.5%) agreed to participate in the study. These subjects completed self administered questionnaires and we included 1674 men (a response rate 62.0%) in the study. RESULTS The overall proportion of circumcised was 1306 (78.0%) and an additional 192 (11.5%) wished to be circumcised later. Circumcision was carried out mostly during their elementary and middle school years. Of men circumcised, the decision whether to circumcise was most often made by their parents. Of the subjects, 75.0% believed that circumcision is necessary, while 2.9% believed it to be unnecessary. Among those who believed circumcision to be necessary, the most common reason was to improve penile hygiene (89.1%). CONCLUSIONS Our results indicate a positive attitude toward circumcision in South Korean men, linking it with hygienic practices. Circumcision in South Korea depends on the perpetuation of cultural beliefs that support it.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Seoul, Korea.
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Abstract
OBJECTIVE To take a different perspective in assessing young men with chronic prostatitis-like symptoms, this study was designed since few prospective studies are available to survey a population of young men. MATERIAL AND METHODS One hundred and fifty men aged 20 years dwelling in the community were randomly selected. Chronic prostatitis-like symptoms were measured by the National Institutes of Health-Chronic Prostatitis Symptom Index and the selfreported scores for pain and urinary symptoms were used to identify chronic prostatitis-like symptoms. The psychological methods used were the Beck Depression Inventory, the State-Trait Anxiety Inventory, and the Bem Sex Role Inventory. A total of 87 men (a response rate 58%) completed self-administered questionnaires. RESULTS As the scores for pain and urinary symptoms increased, those for depression increased (p < 0.001 and p = 0.01, respectively). However, the mean scores for state and trait anxiety were not different according to the scores for pain and urinary symptoms. The mean masculinity scores were not different according to the scores for pain but those were significantly different according to the scores of urinary symptoms (p = 0.042). The mean femininity scores were not different according to the scores of pain and urinary symptoms. CONCLUSIONS Our findings suggest that psychological factors, especially depression and weak masculine identity may be associated with an early stage of chronic prostatitis-like symptoms. Young men with chronic prostatitis-like symptoms also have psychological problems.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Taejeon, Korea.
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Abstract
OBJECTIVE To investigate the factors influencing testicular volume in young men in the community. SUBJECTS AND METHODS Between May and November 2001, 2700 men aged 20 years and dwelling in the community were randomly selected at a 10% sampling fraction after a sampling process by census district; 2080 men agreed to participate in the study. All volunteers underwent a standard evaluation, including a detailed medical history and physical examination. After excluding those with testicular diseases the study comprised 1792 men. RESULTS There were significant but weak correlations between testicular volumes and height, body weight and body mass index. In a multivariate model, high environmental temperature was associated with a decreased likelihood (odds ratio, OR, 0.42; 95% confidence interval, CI, 0.29-0.60; P < 0.001) of a paired testicular volume being below the 25th percentile of all participants. The likelihood of a low paired testicular volume varied by area, with a 1.6-fold greater risk in men dwelling in large rural areas than in those in major towns. Increasing height was associated with a decreased likelihood (OR 0.60; 95% CI 0.38-0.96; P = 0.032) and low body weight with an increased likelihood of a low paired testicular volume (OR 2.54; 95% CI 1.57-4.12; P < 0.001). CONCLUSION These results establish that demographic and environmental factors have an effect on testicular size and suggest that body size may be important in determining testicular size in late adolescents.
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Affiliation(s)
- J H Ku
- Departments of Urology, Military Manpower Administration, Seoul, and Soonchunhyang University School of Medicine, Pucheon and Chonan, Korea.
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Abstract
OBJECTIVES To investigate the influence of environmental factors on chronic prostatitis-like symptoms among young men in a community. METHODS Of 28,841 men aged 20 years dwelling in the community, a total of 16,321 men (response rate 56.6%) were included in this study. The National Institutes of Health Chronic Prostatitis Symptom Index was used to identify men with chronic prostatitis-like symptoms. The questionnaire also queried sociodemographic characteristics. The Korean Meteorological Administration provided information on the weather of the community. We determined the risk factors of chronic prostatitis-like symptoms among these environmental factors using univariate and multivariate analyses. RESULTS Six percent of the men were identified as having significant prostatitis-like symptoms (perineal and/or ejaculatory pain and a total pain score of 4 or greater). The univariate logistic regression analysis indicated that education level, average duration of sunlight, and average temperature were risk factors for chronic prostatitis-like symptoms. As these variables increased, the scores of chronic prostatitis-like symptoms decreased. In the multivariate model used, the likelihood of chronic prostatitis-like symptoms varied by the final educational level, with middle school and high school graduates having 1.8 and 1.4-fold higher odds, respectively, than men attending college. In the same model, the average duration of sunlight was also an independent risk factor of chronic prostatitis-like symptoms (odds ratio 0.85; 95% confidence interval 0.77 to 0.95; P = 0.003), but the average temperature lost statistical significance. CONCLUSIONS Our findings suggest that the community-based prevalence of chronic prostatitis-like symptoms may be high in young men. Higher education and a longer time in sunlight were associated with a decreased likelihood of chronic prostatitis-like symptoms.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Taejeon, South Korea
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Ku JH, Song YS, Kim ME, Lee NK, Park YH. Is there a role of radial rigidity in the evaluation of erectile dysfunction? Int J Impot Res 2001; 13:200-4. [PMID: 11494075 DOI: 10.1038/sj.ijir.3900674] [Citation(s) in RCA: 10] [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: 08/01/2000] [Accepted: 02/26/2001] [Indexed: 11/09/2022]
Abstract
RigiScan has been the most widely utilized device for measuring erectile rigidity. However, the use of the RigiScan in the evaluation of erectile dysfunction has questionable because the RigiScan device does not directly determine axial rigidity. The aim of this study is to clarify that radial rigidity measured by RigiScan reflects the intracorporeal pressure and erectile capability efficiently. From January 1998 to May 1999, a total of 23 patients with erectile dysfunction were involved in the study. They were evaluated by RigiScan and duplex ultrasonography after intracorporeal injection of prostaglandin E1. We investigated the relationship between radial rigidity and the resistance index. The results of radial rigidity were also compared with that of the degree of erection. For the entire group, significant correlations were found between radial rigidity and the resistance index (r=0.680, P<0.001 for tip rigidity; r=0.703, P<0.001 for base rigidity). In addition, for 12 patients whose tip rigidity exceeded 60% and for 10 whose base rigidity exceeded 60%, the correlations between radial rigidity and the resistance index remained (r=0.659, P=0.020 for tip rigidity; r=0.759, P=0.011 for base rigidity). Based on the response determined by patients, radial rigidity represented the degree of erection efficiently. Our findings suggest that RigiScan is a useful diagnostic tool. Radial rigidity represents the intracorporeal pressure efficiently and has an acceptable role in the evaluation of erectile dysfunction.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Teajeon, Korea.
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Abstract
BACKGROUND Computed tomography (CT) has been the most informative imaging method in renal trauma. Despite the good sensitivity of magnetic resonance imaging (MRI) to the presence of hematoma, edema and ischemia, MRI has not been widely studied in patients with renal trauma. The present study was initiated to evaluate the role of MRI in patients with renal trauma. METHODS Between June 1998 and September 1999, CT and MRI were prospectively performed on 12 patients who suffered from renal trauma and the results reviewed. RESULTS The presence and size of perirenal hematoma could be detected by both CT and MRI. Magnetic resonance imaging could differentiate intrarenal hematoma from perirenal hematoma more accurately, and provided additional information about the hematoma as T1- and T2-weighted MRI were able to determine recent bleeding in the hematoma by regional differences in signal intensity. Magnetic resonance imaging clearly revealed renal fracture with non-viable fragment and detected focal renal laceration that was not detected on CT due to perirenal hematoma associated with renal infarction. However, although MRI had many advantages over CT, it had also major drawbacks, which were that it required longer imaging time and increased the cost. CONCLUSIONS Magnetic resonance imaging may be useful in renal trauma. However, it is suggested that MRI should be limited to carefully selected patients, such as those with severe renal injury or equivocal findings on CT.
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Affiliation(s)
- J H Ku
- Department of Urology, Military Manpower Administration, Taejeon, Seoul, Korea.
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Abstract
We surveyed the prevalence of chronic prostatitis-like symptoms in young men using the National Institutes of Health (NIH) Chronic Prostatitis Symptom Index (CPSI) and determined the clinical validity of the NIH-CPSI among men in the community. Of 29,017 men aged 20 years dwelling in the community, 8,705 men were randomly selected at a 30.0% sampling fraction and a total of 6,940 men (a response rate 79.7%) completed a self-administered questionnaire. Six percent reported having pain or discomfort in more than one area . About 5% did not feel that the bladder emptied fully after urinating more than 1 time in 5 and 10.5% had to urinate again within 2 h more than 1 time in 5. As the scores for pain or discomfort increased, those for urinary symptoms and impact on quality of life increased (P < 0.001; Armitage test). As the scores for urinary symptoms increased, those for pain or discomfort and impact on quality of life also increased (P < 0.001; Armitage test). The community-based prevalence of chronic prostatitis-like symptoms were found to be high in young men as well as in older men. Our findings indicate that men with pain or urinary symptoms experience a negative impact on their quality of life and the NIH-CPSI provides a valid measure for the general population.
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Affiliation(s)
- J H Ku
- Military Manpower Administration, Taejeon, Korea.
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