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Lim CY, Chang JH, Lee WS, Kim J, Park IY. CD40 Agonists Alter the Pancreatic Cancer Microenvironment by Shifting the Macrophage Phenotype toward M1 and Suppress Human Pancreatic Cancer in Organotypic Slice Cultures. Gut Liver 2022; 16:645-659. [PMID: 34933280 PMCID: PMC9289829 DOI: 10.5009/gnl210311] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/24/2021] [Accepted: 09/03/2021] [Indexed: 11/04/2022] Open
Abstract
Background/Aims CD40 agonists are thought to generate antitumor effects on pancreatic cancer via macrophages and T cells. We aimed to investigate the role of CD40 agonists in the differentiation of macrophages and treatment of human pancreatic adenocarcinoma. Methods Immunohistochemistry was performed on paraffin-embedded surgical blocks from patients with pancreatic cancers to evaluate macrophage phenotypes and their relationship with survival. The effects of CD40 agonists on macrophage phenotypes and human pancreatic cancer were evaluated utilizing cell cocultures and organotypic slice cultures. Results CD163+ (predominant in M2 macrophages) and FOXP3+ (predominant in regulatory T cells) expression levels in the tumors were significantly lower in patients with stage IB pancreatic cancer than in those with stage II or III disease (p=0.002 and p=0.003, respectively). Patients with high CD163+ expression had shorter overall survival than those with low CD163+ expression (p=0.002). In vitro treatment of THP-1 macrophages with a CD40 agonist led to an increase in HLA-DR+ (predominant in M1 macrophages) and a decrease in CD163+ expression in THP-1 cells. Cell cocultures showed that CD40 agonists facilitate the suppression of PANC-1 human pancreatic cancer cells by THP-1 macrophages. Organotypic slice cultures showed that CD40 agonists alter the pancreatic cancer microenvironment by shifting the macrophage phenotype toward M1 (increase HLA-DR+ and decrease CD163+ expression), decreasing the abundance of regulatory T cells, and increasing tumor cell apoptosis. Conclusions CD163 is related to advanced human pancreatic cancer stages and shorter overall survival. CD40 agonists alter macrophage phenotype polarization to favor the M1 phenotype and suppress human pancreatic cancer.
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Affiliation(s)
- Chae Yoon Lim
- Institute of Clinical Medicine Research, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae Hyuck Chang
- Departments of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Won Sun Lee
- Institute of Clinical Medicine Research, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jeana Kim
- Departments of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Il Young Park
- Departments of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Lee HL, Lee SW, Jang JW, Bae SH, Choi JY, Yoon SK, Choi HJ, Na GH, You YK, Park IY, Kim DG. Anticancer Effect of Statins in Patients Undergoing Liver Transplantation for Hepatocellular Carcinoma. Liver Transpl 2022; 28:397-406. [PMID: 34374192 DOI: 10.1002/lt.26258] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/15/2021] [Accepted: 08/03/2021] [Indexed: 01/06/2023]
Abstract
The anticancer effect of statins is drawing attention. However, it is unclear whether statin use reduces the risk of hepatocellular carcinoma (HCC) recurrence in patients who undergo liver transplantation (LT) for HCC. Consecutive patients who underwent LT for HCC between 1995 and 2019 were enrolled. The effects of statins on HCC recurrence and mortality were compared between statin user and statin nonuser groups. We performed the analyses in a variety of ways, including inverse probability treatment weighting (IPTW) methods to balance any confounders and the landmark method to avoid immortal time bias. A total of 430 patients were enrolled, among whom 323 (75.1%) were statin nonusers and 107 (24.9%) were statin users. During a median of 64.9 months (IQR, 26.1-122.6 months) of follow-up, 79 patients (18.4%) had HCC recurrence and 111 (25.8%) died. Among those who died, 53 (47.7%) were identified as HCC-related mortalities. Statin use was a predictor of HCC recurrence (adjusted hazard ratio [HR], 0.3; 95% confidence interval [CI], 0.1-0.6; P = 0.002), all-cause mortality (adjusted HR, 0.3; 95% CI, 0.2-0.5; P < 0.001), and HCC-related mortality (adjusted HR, 0.4; 95% CI, 0.2-0.9; P = 0.03). The effects of statin use on clinical outcomes were also identified through IPTW analysis. There was a dose-dependent relationship between statin use and HCC recurrence. The anticancer effect of statins on HCC recurrence was consistently significant across multivariable-stratified and sensitivity analyses. Statin use significantly reduced the risk of HCC recurrence and improved the survival of patients who underwent LT for HCC.
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Affiliation(s)
- Hae Lim Lee
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung Won Lee
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeong Won Jang
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Si Hyun Bae
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jong Young Choi
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seung Kew Yoon
- Division of Hepatology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,The Catholic Liver Research Center, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ho Joong Choi
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Gun Hyung Na
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Kyoung You
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Il Young Park
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dong Goo Kim
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Kang JS, Mok L, Heo JS, Han IW, Shin SH, Yoon YS, Han HS, Hwang DW, Lee JH, Lee WJ, Park SJ, Park JS, Kim Y, Lee H, Yu YD, Yang JD, Lee SE, Park IY, Jeong CY, Roh Y, Kim SR, Moon JI, Lee SK, Kim HJ, Lee S, Kim H, Kwon W, Lim CS, Jang JY, Park T. Development and External Validation of Survival Prediction Model for Pancreatic Cancer Using Two Nationwide Database: Surveillance, Epidemiology and End Results (SEER) and Korea Tumor Registry System-Biliary Pancreas (KOTUS-BP). Gut Liver 2021; 15:912-921. [PMID: 33941710 PMCID: PMC8593502 DOI: 10.5009/gnl20306] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/29/2020] [Revised: 12/31/2020] [Accepted: 01/15/2021] [Indexed: 11/04/2022] Open
Abstract
Background/Aims Several prediction models for evaluating the prognosis of nonmetastatic resected pancreatic ductal adenocarcinoma (PDAC) have been developed, and their performances were reported to be superior to that of the 8th edition of the American Joint Committee on Cancer (AJCC) staging system. We developed a prediction model to evaluate the prognosis of resected PDAC and externally validated it with data from a nationwide Korean database. Methods Data from the Surveillance, Epidemiology and End Results (SEER) database were utilized for model development, and data from the Korea Tumor Registry System-Biliary Pancreas (KOTUS-BP) database were used for external validation. Potential candidate variables for model development were age, sex, histologic differentiation, tumor location, adjuvant chemotherapy, and the AJCC 8th staging system T and N stages. For external validation, the concordance index (C-index) and time-dependent area under the receiver operating characteristic curve (AUC) were evaluated. Results Between 2004 and 2016, data from 9,624 patients were utilized for model development, and data from 3,282 patients were used for external validation. In the multivariate Cox proportional hazard model, age, sex, tumor location, T and N stages, histologic differentiation, and adjuvant chemotherapy were independent prognostic factors for resected PDAC. After an exhaustive search and 10-fold cross validation, the best model was finally developed, which included all prognostic variables. The C-index, 1-year, 2-year, 3-year, and 5-year time-dependent AUCs were 0.628, 0.650, 0.665, 0.675, and 0.686, respectively. Conclusions The survival prediction model for resected PDAC could provide quantitative survival probabilities with reliable performance. External validation studies with other nationwide databases are needed to evaluate the performance of this model.
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Affiliation(s)
- Jae Seung Kang
- Department of Surgery, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Lydia Mok
- Department of Statistics and Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Korea
| | - Jin Seok Heo
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - In Woong Han
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Hyun Shin
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yoo-Seok Yoon
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Ho-Seong Han
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Dae Wook Hwang
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Hoon Lee
- Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Woo Jung Lee
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Jae Park
- Center for Liver and Pancreatobiliary Cancer, National Cancer Center, Goyang, Korea
| | - Joon Seong Park
- Pancreatobiliary Cancer Clinic, Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yonghoon Kim
- Department of Surgery, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea
| | - Huisong Lee
- Department of Surgery, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Young-Dong Yu
- Division of HBP Surgery and Liver Transplantation, Department of Surgery, Korea University College of Medicine, Seoul, Korea
| | - Jae Do Yang
- Department of Surgery, Jeonbuk National University Medical School, Jeonju, Korea
| | - Seung Eun Lee
- Department of Surgery, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Il Young Park
- Department of General Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Chi-Young Jeong
- Department of Surgery, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Younghoon Roh
- Department of Surgery, Dong-A University College of Medicine, Busan, Korea
| | - Seong-Ryong Kim
- Department of Surgery, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang, Korea
| | - Ju Ik Moon
- Department of Surgery, Konyang University Hospital, Daejeon, Korea
| | - Sang Kuon Lee
- Department of Surgery, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea
| | - Hee Joon Kim
- Department of Surgery, Chonnam National University Hospital, Gwangju, Korea
| | - Seungyeoun Lee
- Department of Mathematics and Statistics, Sejong University, Seoul, Korea
| | - Hongbeom Kim
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Wooil Kwon
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Chang-Sup Lim
- Department of Surgery, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Jin-Young Jang
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Taesung Park
- Department of Statistics and Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, Korea
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Hwang HS, Park IY, Hong JI, Kim JR, Kim HA. Comparison of joint degeneration and pain in male and female mice in DMM model of osteoarthritis. Osteoarthritis Cartilage 2021; 29:728-738. [PMID: 33609695 DOI: 10.1016/j.joca.2021.02.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 01/13/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE While the prevalence of radiographic and symptomatic osteoarthritis (OA) is higher in women, male mice are more frequently used in animal experiments to explore its pathogenesis or drug efficacy. In this study, we examined whether sexual dimorphism affects pain and joint degeneration in destabilization of the medial meniscus (DMM) mouse model. METHODS DMM or sham surgery was performed on the knee of male and female C57BL/6 mice. Joint damage was assessed by safranin O staining and scored using the Osteoarthritis Research Society International (OARSI) scoring system. Von Frey hair, incapacitance, and rotarod tests were conducted to measure joint pain. The analgesic effect of capsazepine (CPZ), a TRPV1 antagonist, was compared between male and female mice. RESULTS Histology and OARSI scoring analysis showed that cartilage degeneration developed, and progressed in both male and female DMM groups, however, damage was less severe in females at the late stage of OA. Pain behavior, as measured by mechanical allodynia, was displayed for longer in male DMM mice compared to females. Incapacitance data showed that CPZ significantly reduced DMM-induced pain in male mice but not in female mice. Immunofluorescence microscopy analysis demonstrated that DMM surgery increased the expression of TRPV1 in both female and male dorsal root ganglion (DRG). Injection of CPZ significantly suppressed TRPV1 expression in the DRG of male mice only. CONCLUSION Joint damage develops comparably in both female and male mice after DMM although it progresses less in females. There was a subtle sex difference in pain behaviors and analgesic efficacy of a TRPV1 antagonist, which was accompanied by a differential regulation of TPRV1.
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Affiliation(s)
- H S Hwang
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - I Y Park
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J I Hong
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J R Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - H A Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea.
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Kim JR, Jang KT, Jang JY, Lee K, Kim JH, Kim H, Kim SW, Kwon W, Choi DW, Heo J, Han IW, Hwang S, Kim WJ, Hong SM, Kim DS, Yu YD, Kim JY, Nah YW, Park HW, Choi HJ, Han HS, Yoon YS, Park SJ, Hong EK, Seo HI, Park DY, Kang KJ, Kang YN, Yu HC, Moon WS, Lim CS, Bae JM, Jo S, Lee W, Roh YH, Jeong JS, Jeong CY, Lee JS, Song IS, Kim KH, Kim HG, Cho CH, Joo SH, Won KY, Kim HJ, Choi JH, Chu CW, Lee JH, Park IY, Lee H, Lee SE, Kim HS, Lee HK, Cho MS, Kim H, Han KM. Clinicopathologic analysis of intraductal papillary neoplasm of bile duct: Korean multicenter cohort study. HPB (Oxford) 2020; 22:1139-1148. [PMID: 31837945 DOI: 10.1016/j.hpb.2019.11.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/02/2019] [Accepted: 11/11/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND IPNB is very rare disease and most previous studies on IPNB were case series with a small number due to low incidence. The aim of this study is to validate previously known clinicopathologic features of intraductal papillary neoplasm of bile duct (IPNB) based on the first largest multicenter cohort. METHODS Among 587 patients previously diagnosed with IPNB and similar diseases from each center in Korea, 387 were included in this study after central pathologic review. We also reviewed all preoperative image data. RESULTS Of 387 patients, 176 (45.5%) had invasive carcinoma and 21 (6.0%) lymph node metastasis. The 5-year overall survival was 80.9% for all patients, 88.8% for IPNB with mucosal dysplasia, and 70.5% for IPNB with invasive carcinoma. According to the "Jang & Kim's modified anatomical classification," 265 (68.5%) were intrahepatic, 103 (26.6%) extrahepatic, and 16 (4.1%) diffuse type. Multivariate analysis revealed that tumor invasiveness was a unique predictor for survival analysis. (p = 0.047 [hazard ratio = 2.116, 95% confidence interval 1.010-4.433]). CONCLUSIONS This is the first Korean multicenter study on IPNB through central pathologic and radiologic review process. Although IPNB showed good long-term prognosis, relatively aggressive features were also found in invasive carcinoma and extrahepatic/diffuse type.
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Affiliation(s)
- Jae Ri Kim
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Hospital), South Korea
| | - Kee-Taek Jang
- Dept. of Pathology, Sungkyunkwan University School of Medicine (Samsung Medical Center), South Korea
| | - Jin-Young Jang
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Hospital), South Korea.
| | - Kyungbun Lee
- Dept. of Pathology, Seoul National University College of Medicine (Seoul National University Hospital), South Korea
| | - Jung Hoon Kim
- Dept. of Radiology, Seoul National University College of Medicine (Seoul National University Hospital), South Korea
| | - Haeryoung Kim
- Dept. of Pathology, Seoul National University College of Medicine (Seoul National University Hospital), South Korea; Dept. of Pathology, Seoul National University College of Medicine (Seoul National University Bundang Hospital), South Korea
| | - Sun-Whe Kim
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Hospital), South Korea
| | - Wooil Kwon
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Hospital), South Korea
| | - Dong Wook Choi
- Dept. of Surgery, Sungkyunkwan University School of Medicine (Samsung Medical Center), South Korea
| | - JinSeok Heo
- Dept. of Surgery, Sungkyunkwan University School of Medicine (Samsung Medical Center), South Korea
| | - In Woong Han
- Dept. of Surgery, Sungkyunkwan University School of Medicine (Samsung Medical Center), South Korea
| | - Shin Hwang
- Dept. of Surgery, University of Ulsan College of Medicine (Asan Medical Center), South Korea
| | - Wan-Joon Kim
- Dept. of Surgery, University of Ulsan College of Medicine (Asan Medical Center), South Korea
| | - Seung-Mo Hong
- Dept. of Pathology, University of Ulsan College of Medicine (Asan Medical Center), South Korea
| | - Dong-Sik Kim
- Dept. of Surgery, Korea University College of Medicine, South Korea
| | - Young-Dong Yu
- Dept. of Surgery, Korea University College of Medicine, South Korea
| | - Joo Young Kim
- Dept. of Pathology, Korea University College of Medicine, South Korea
| | - Yang Won Nah
- Dept. of Surgery, University of Ulsan College of Medicine (Ulsan University Hospital), South Korea
| | - Hyung Woo Park
- Dept. of Surgery, University of Ulsan College of Medicine (Ulsan University Hospital), South Korea
| | - Hye-Jeong Choi
- Dept. of Pathology, University of Ulsan College of Medicine (Ulsan University Hospital), South Korea
| | - Ho-Seong Han
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Bundang Hospital), South Korea
| | - Yoo-Seok Yoon
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Bundang Hospital), South Korea
| | - Sang Jae Park
- Dept. of Surgery, National Cancer Center, South Korea
| | | | - Hyung Il Seo
- Dept. of Surgery, Pusan National University School of Medicine (Pusan National University Hospital), South Korea
| | - Do Youn Park
- Dept. of Pathology, Pusan National University School of Medicine (Pusan National University Hospital), South Korea
| | - Koo Jeong Kang
- Dept. of Surgery, Keimyung University School of Medicine, South Korea
| | - Yu Na Kang
- Dept. of Pathology, Keimyung University School of Medicine, South Korea
| | - Hee Chul Yu
- Dept. of Surgery, Chonbuk National University Medical School, South Korea
| | - Woo Sung Moon
- Dept. of Pathology, Chonbuk National University Medical School, South Korea
| | - Chang-Sup Lim
- Dept. of Surgery, Seoul National University College of Medicine (Boramae Medical Center), South Korea
| | - Jeong Mo Bae
- Dept. of Pathology, Seoul National University College of Medicine (Boramae Medical Center), South Korea
| | - Sungho Jo
- Dept. of Surgery, Dankook University College of Medicine, South Korea
| | - Wonae Lee
- Dept. of Pathology, Dankook University College of Medicine, South Korea
| | - Young Hun Roh
- Dept. of Surgery, Dong-A University College of Medicine, South Korea
| | - Jin Sook Jeong
- Dept. of Pathology, Dong-A University College of Medicine, South Korea
| | - Chi-Young Jeong
- Dept. of Surgery, Gyeongsang National University Postgraduate School of Medicine, South Korea
| | - Jong Sil Lee
- Dept. of Pathology, Gyeongsang National University Postgraduate School of Medicine, South Korea
| | - In-Sang Song
- Dept. of Surgery, Chungnam National University School of Medicine, South Korea
| | - Kyung-Hee Kim
- Dept. of Pathology, Chungnam National University School of Medicine, South Korea
| | - Ho Gak Kim
- Dept. of Surgery, Daegu Catholic University School of Medicine, South Korea
| | - Chang Ho Cho
- Dept. of Pathology, Daegu Catholic University School of Medicine, South Korea
| | - Sun-Hyung Joo
- Dept. of Surgery, Kyung Hee University School of Medicine, South Korea
| | - Kyu Yeoun Won
- Dept. of Pathology, Kyung Hee University School of Medicine, South Korea
| | - Hong Jin Kim
- Dept. of Surgery, Yeungnam University College of Medicine, South Korea
| | - Joon Hyuk Choi
- Dept. of Pathology, Yeungnam University College of Medicine, South Korea
| | - Chong-Woo Chu
- Dept. of Surgery, Pusan National University School of Medicine (Pusan National University Yangsan Hospital), South Korea
| | - Jung Hee Lee
- Dept. of Pathology, Pusan National University School of Medicine (Pusan National University Yangsan Hospital), South Korea
| | - Il Young Park
- Dept. of Surgery, Catholic University College of Medicine, South Korea
| | - Heejeong Lee
- Dept. of Pathology, Catholic University College of Medicine, South Korea
| | - Seung Eun Lee
- Dept. of Surgery, Chung-Ang University College of Medicine, South Korea
| | - Hee Sung Kim
- Dept. of Pathology, Chung-Ang University College of Medicine, South Korea
| | - Hyeon Kook Lee
- Dept. of Surgery, Ewha Womans University School of Medicine, South Korea
| | - Min-Sun Cho
- Dept. of Pathology, Ewha Womans University School of Medicine, South Korea
| | - Hongbeom Kim
- Dept. of Surgery, Seoul National University College of Medicine (Seoul National University Hospital), South Korea; Dept. of Surgery, Dongguk University College of Medicine (Dongguk University Ilsan Hospital), South Korea
| | - Kang Min Han
- Dept. of Pathology, Dongguk University College of Medicine (Dongguk University Ilsan Hospital), South Korea
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Kim YM, Joo YB, Lee WY, Park IY, Park YC. Patella-patellar tendon angle decreases in patients with infrapatellar fat pad syndrome and medial patellar plica syndrome. Knee Surg Sports Traumatol Arthrosc 2020; 28:2609-2618. [PMID: 32125441 DOI: 10.1007/s00167-020-05892-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/29/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE Infrapatellar fat pad (IPFP) syndrome and medial patellar plica (MPP) syndrome are two recognized causes of anterior knee pain. However, diagnosing these syndromes is challenging without arthroscopic examination. The aim of this study was to evaluate sagittal patellar tilt in patients with IPFP syndrome or MPP syndrome by measuring the patella-patellar tendon angle (PPTA) in affected patients. METHODS Eighty-three patients with anterior knee pain who underwent diagnostic arthroscopy that confirmed isolated IPFP or MPP syndrome from 2011 to 2016 were included in this retrospective study. Patients were divided into Group A (IPFP syndrome, n = 44) and Group B (MPP syndrome, n = 39). The control group included 78 patients without knee pathology who underwent magnetic resonance imaging (MRI) of the knee during the study period. Radiographic measurements, including PPTA, IPFP area, patellar height, axial patellar alignment, patellar tilt, sulcus angle, and lateral trochlear inclination, were made on MRI images by two experienced sports medicine orthopedists. RESULTS The mean PPTA in each knee-pathology group was significantly smaller than that in the control group (Group A: 137.3° ± 4.9°; Group B: 138.1° ± 3.2°; control group, 141.4° ± 2.9°). There was no significant difference between groups for any other radiographic parameter evaluated. CONCLUSION The PPTA was significantly smaller in patients with IPFP syndrome or MPP syndrome than in healthy controls. Therefore, sagittal patellar tilt should be included in the routine evaluation of patients with anterior knee pain. Evaluation of PPTA may help to diagnose IPFP syndrome or MPP syndrome. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Young Mo Kim
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea
| | - Yong Bum Joo
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea.
| | - Woo Yong Lee
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea
| | - Il Young Park
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea
| | - Young Cheol Park
- Department of Orthopedic Surgery, Chungnam National University Hospital, Chungnam National University School of Medicine, Munhwa-dong, Jung-gu, Daejeon, 301-721, South Korea
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Park SY, Hong TH, Lee SK, Park IY, Kim TH, Kim SG. Recurrence of common bile duct stones following laparoscopic common bile duct exploration: a multicenter study. J Hepatobiliary Pancreat Sci 2019; 26:578-582. [DOI: 10.1002/jhbp.675] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sun Young Park
- Department of General Surgery Yeouido St. Mary’s HospitalCollege of MedicineThe Catholic University of Korea 63‐ro 10, Yeongdeungpo‐gu Seoul07345Korea
| | - Tae Ho Hong
- Department of Hepatobiliary and Pancreas Surgery Seoul St. Mary’s HospitalCollege of MedicineThe Catholic University of Korea Seoul Korea
| | - Sang Kuon Lee
- Department of General Surgery Daejeon St. Mary’s Hospital College of Medicine The Catholic University of Korea Daejeon Korea
| | - Il Young Park
- Department of General Surgery Bucheon St. Mary’s HospitalCollege of MedicineThe Catholic University of Korea Bucheon Korea
| | - Tae Hyeon Kim
- Division of Gastroenterology Department of Internal Medicine Wonkwang University Medical School and Hospital Iksan Korea
| | - Sung Geun Kim
- Department of General Surgery Yeouido St. Mary’s HospitalCollege of MedicineThe Catholic University of Korea 63‐ro 10, Yeongdeungpo‐gu Seoul07345Korea
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Lim CY, Chang JH, Lee WS, Lee KM, Yoon YC, Kim J, Park IY. Organotypic slice cultures of pancreatic ductal adenocarcinoma preserve the tumor microenvironment and provide a platform for drug response. Pancreatology 2018; 18:913-927. [PMID: 30292644 DOI: 10.1016/j.pan.2018.09.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 07/20/2018] [Revised: 09/10/2018] [Accepted: 09/24/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND /Objective: The conventional models currently used to evaluate various anti-tumor therapeutic agents are not sufficient for representing human pancreatic ductal adenocarcinoma (PDA), which has a unique tumor microenvironment. We aimed to produce an organotypic slice culture model from human PDA that resembles the in vivo situation and to evaluate the responses of PDA slices to established cytotoxic drugs. METHODS PDA tissues were obtained from 10 patients who underwent pancreatic resection. The tissues were sliced by a vibratome, and the tumor slices were then cultured. The viability of tumor slices during slice culture was evaluated using H&E and immunohistochemical staining, and stromal cells were demonstrated. The effects of cytotoxic drugs on PDA cell lines and slices were analyzed. RESULTS Tumor slices maintained their surface areas and tissue viability for at least five days during culture. Preserved proliferation and apoptosis in tumor slices were observed by the expression of Ki-67 and cleaved caspase-3. Stromal cells including macrophages (CD68+ and CD163+), T cells (CD3+, CD8+, and FOXP3+), and myeloid cells (CD11b+) were present throughout the culture period. Staurosporine, gemcitabine, and cisplatin treatment of PDA cell lines and tumor slices exerted proportional cytotoxic effects in terms of MTT viability, tumor cell number, and Ki-67 and cleaved caspase-3 expression. CONCLUSIONS Organotypic human PDA slice cultures preserved their viability and tumor microenvironment for at least five days during slice culture. PDA slice culture appears to be a feasible preclinical test model to assess the response to anti-tumor agents.
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Affiliation(s)
- Chae Yoon Lim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jae Hyuck Chang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Won Sun Lee
- Institute of Clinical Medicine Research, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Kang Min Lee
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Chul Yoon
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeana Kim
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Il Young Park
- Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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You DD, Paik KY, Park IY, Yoo YK. Randomized controlled study of the effect of octreotide on pancreatic exocrine secretion and pancreatic fistula after pancreatoduodenectomy. Asian J Surg 2018; 42:458-463. [PMID: 30262436 DOI: 10.1016/j.asjsur.2018.08.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/09/2018] [Accepted: 08/23/2018] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Octreotide is known to decrease the rate of postoperative complication after pancreatic resection by diminishing exocrine function of the pancreas. The aim of this study was to evaluate the effect of octreotide in decreasing exocrine excretion of pancreas and preventing pancreatic fistula. MATERIALS AND METHODS Prospective randomized trial was conducted involving 59 patients undergoing pancreaticoduodenectomy for either malignant or benign tumor, 29 patients were randomized to receive octreotide; 30 patients allotted to placebo. All pancreaticojejunal anastomosis was performed with external stent of negative-pressured drainage and the amount of pancreatic juice through the external stent was measured until postoperative 7th day. Pancreatic fistula was recorded. RESULTS There were no differences in demographics, pancreatic texture and pancreatic duct diameter between the octreotide and placebo group. The median output of pancreatic juice was not significantly different between both groups during 7 days after surgery. When the patients were stratified according to the diameter of pancreatic duct (duct ≤5 mm, > 5 mm), there were no significant differences in daily amount of pancreatic juice, however, when stratified according to pancreatic texture, median output of pancreatic juice was significantly lower in patients with hard pancreas compared with those with soft pancreas from 5 day to 7 day after surgery (p < 0.05). No significant differences in pancreatic fistula and postoperative complications were found between the octreotide and placebo groups. CONCLUSIONS Prophylactic octreotide is not effective to inhibit the exocrine secretion of the remnant pancreas and does not decrease the incidence of pancreatic fistula after pancreaticoduodenectomy.
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Affiliation(s)
- Dong Do You
- Department of Surgery, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kwang Yeol Paik
- Department of Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
| | - Il Young Park
- Department of Surgery, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Kyung Yoo
- Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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10
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Park IY, Kim MR, Lee HN, Gen Y, Kim MJ. Risk factors for Korean women to develop an isthmocele after a cesarean section. BMC Pregnancy Childbirth 2018; 18:162. [PMID: 29764452 PMCID: PMC5952596 DOI: 10.1186/s12884-018-1821-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 05/02/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The increase in number of cesarean section (CS) operations has resulted in an increase in cases of isthmocele development. The objective of this study is to determine the risk factors for isthmocele development after CS. METHODS Isthmocele measurements were taken for 404 women with a history of at least one low transverse CS. The following potential risk factors were investigated: patient's age at CS, cause of CS, weeks of gestation at CS, premature rupture of membrane (PROM), phase of labor, type suture (single/double layer), operation time, uterine flexion (anteversion/retroversion), and blood transfusion during operation. A transvaginal ultrasound was carried out to examine the isthmocele in the uterus after CS, including the shape of the isthmocele, residual myometrial thickness, depth and width of isthmocele, cervical thickness, location of the isthmocele, and clinical characteristics. RESULTS In our study population, the isthmocele had a prevalence of 73.8%. Most isthmocele had a triangular (65.4%) or semicircular shape (10.4%). The presence of an isthmocele was significantly associated with repeat CS, premature rupture of membrane (PROM), short operation time, and extent of cervix dilatation at CS. The risk of isthmocele was low in women who had placenta previa totalis (PPT), twin, a long operation time, or a transfusion during the operation. CONCLUSIONS In our study, isthmocele development was significantly associated with repeat CS, PROM, a short operation time, and the extent of cervix dilatation at CS. Therefore, PROM prevention and a more careful uterine closure are needed to reduce the risk of developing an isthmocele after CS.
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Affiliation(s)
- I Y Park
- Department of Obstetrics and Gynecology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - M R Kim
- Department of Obstetrics and Gynecology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - H N Lee
- Department of Obstetrics and Gynecology, College of Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, 327 Sosa-ro, Bucheon, Gyeonggi-do, 14647, Republic of Korea
| | - Y Gen
- Department of Obstetrics and Gynecology, College of Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, 327 Sosa-ro, Bucheon, Gyeonggi-do, 14647, Republic of Korea
| | - M J Kim
- Department of Obstetrics and Gynecology, College of Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, 327 Sosa-ro, Bucheon, Gyeonggi-do, 14647, Republic of Korea.
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Abstract
Small cell carcinoma (SCC) of the gallbladder is an extremely rare tumor. Despite aggressive and varied treatments, its prognosis is poor. A 70-year-old woman undergoing treatment for pneumonia was detected with a gallbladder mass. Radical cholecystectomy was performed and the pathology revealed small cell carcinoma. There were metastases in 2 lymph nodes, scoring T2N1M0, stage IIIB (AJCC 7th). The patient has survived thus far, with subsequent chemotherapy. SCC of the gallbladder has an extremely low incidence and poor prognosis. In some cases, radical surgery with chemotherapy or radiation therapy could increase survival rate of patients.
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Affiliation(s)
- Hayemin Lee
- Department of Surgery, Bucheon St. Mary Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Ho Joong Choi
- Department of Surgery, Bucheon St. Mary Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
| | - Il Young Park
- Department of Surgery, Bucheon St. Mary Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea
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12
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Wie JH, Kwon JY, Ko HS, Lee Y, Shin JC, Park IY. Thyroid storm and early-onset proteinuric hypertension caused by a partial molar pregnancy. J OBSTET GYNAECOL 2017; 36:351-2. [PMID: 26977975 DOI: 10.3109/01443615.2015.1065229] [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: 11/13/2022]
Affiliation(s)
- J H Wie
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
| | - J Y Kwon
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
| | - H S Ko
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
| | - Y Lee
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
| | - J C Shin
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
| | - I Y Park
- a Department of Obstetrics and Gynecology , College of Medicine, The Catholic University of Korea , Seoul , Korea
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Hong JH, Ha KS, Jung YH, Won HS, An HJ, Lee GJ, Kang D, Park JC, Park S, Byun JH, Suh YJ, Kim JS, Park WC, Jung SS, Park IY, Chung SM, Woo IS. Clinical Features of Male Breast Cancer: Experiences from Seven Institutions Over 20 Years. Cancer Res Treat 2016; 48:1389-1398. [PMID: 27121722 PMCID: PMC5080810 DOI: 10.4143/crt.2015.410] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 03/22/2016] [Indexed: 12/02/2022] Open
Abstract
Purpose Breast cancer treatment has progressed significantly over the past 20 years. However, knowledge regarding male breast cancer (MBC) is sparse because of its rarity. This study is an investigation of the clinicopathologic features, treatments, and clinical outcomes of MBC. Materials and Methods Clinical records of 59 MBC patients diagnosed during 1995-2014 from seven institutions in Korea were reviewed retrospectively. Results Over a 20-year period, MBC patients accounted for 0.98% among total breast cancer patients, and increased every 5 years. The median age of MBC patientswas 66 years (range, 24 to 87 years). Forty-three patients (73%) complained of a palpable breast mass initially. The median symptom duration was 5 months (range, 1 to 36 months). Mastectomy was performed in 96% of the patients. The most frequent histology was infiltrating ductal carcinoma (75%). Ninety-one percent of tumors (38/43) were estrogen receptor–positive, and 28% (11/40) showed epidermal growth factor receptor 2 (HER-2) overexpression. After curative surgery, 42% of patients (19/45) received adjuvant chemotherapy; 77% (27/35) received hormone therapy. Five out of ten patients with HER-2 overexpressing tumors did not receive adjuvant anti–HER-2 therapy, while two out of four patients with HER-2 overexpressing tumors received palliative trastuzumab for recurrent and metastatic disease. Letrozole was used for one patient in the palliative setting. The median overall survival durations were 7.2 years (range, 0.6 to 17.0 years) in patients with localized disease and 2.9 years (range, 0.6 to 4.3 years) in those with recurrent or metastatic disease. Conclusion Anti–HER-2 and hormonal therapy, except tamoxifen, have been underutilized in Korean MBC patients compared to female breast cancer patients. With the development of precision medicine, active treatment with targeted agents should be applied. Further investigation of the unique pathobiology of MBC is clinically warranted.
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Affiliation(s)
- Ji Hyung Hong
- Department of Internal Medicine, Incheon St. Mary's Hospital, Incheon, Korea
| | - Kyung Sun Ha
- Department of Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea
| | - Yun Hwa Jung
- Department of Internal Medicine, Yeouido St. Mary's Hospital, Seoul, Korea
| | - Hye Sung Won
- Department of Internal Medicine, Uijeongbu St. Mary's Hospital, Uijeongbu, Korea
| | - Ho Jung An
- Department of Internal Medicine, St. Vincent's Hospital, Suwon, Korea
| | - Guk Jin Lee
- Department of Internal Medicine, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Donghoon Kang
- Department of Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea
| | - Ji Chan Park
- Department of Internal Medicine, Daejeon St. Mary's Hospital, Daejeon, Korea
| | - Sarah Park
- Department of Internal Medicine, Seoul St. Mary's Hospital, Seoul, Korea
| | - Jae Ho Byun
- Department of Internal Medicine, Incheon St. Mary's Hospital, Incheon, Korea
| | - Young Jin Suh
- Department of Surgery, St. Vincent's Hospital, Suwon, Korea
| | - Jeong Soo Kim
- Department of Surgery, Uijeongbu St. Mary's Hospital, Uijeongbu, Korea
| | - Woo Chan Park
- Department of Surgery, Yeouido St. Mary's Hospital, Seoul, Korea
| | - Sang Seol Jung
- Department of Surgery, Seoul St. Mary's Hospital, Seoul, Korea
| | - Il Young Park
- Department of Surgery, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Su-Mi Chung
- Department of Radiation Oncology, Yeouido St. Mary's Hospital, Seoul, Korea
| | - In Sook Woo
- Department of Internal Medicine, Yeouido St. Mary's Hospital, Seoul, Korea
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14
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Lee GJ, Jo KW, Kim J, Park IY. Metastatic Brain Neuroendocrine Tumor Originating from the Liver. J Korean Neurosurg Soc 2015; 58:550-3. [PMID: 26819691 PMCID: PMC4728094 DOI: 10.3340/jkns.2015.58.6.550] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Revised: 12/11/2014] [Accepted: 12/17/2014] [Indexed: 11/27/2022] Open
Abstract
A 67-year-old male presented with left temporal hemianopsia and left hemiparesis. A contrast-enhanced magnetic resonance image revealed a 4.5×3.5×5.0 cm rim-enhancing mass with central necrosis and associated edema located in the left occipital lobe. Of positron emission tomography and abdominal computed tomography, a 9–cm mass with poor enhancement was found in the right hepatic lobe. Craniotomy and right hemihepatectomy was performed. The resected specimen showed histological features and immunochemical staining consistent with a metastatic neuroendocrine tumor (NET). Four months later, the tumors recurred in the brain, liverand spinal cord. Palliative chemotherapy with etoposide and cisplatin led to complete remission of recurred lesions, but the patient died for pneumonia. This is the first case of a metastatic brain NET originating from the liver. If the metastatic NET of brain is suspicious, investigation for primary lesion should be considered including liver.
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Affiliation(s)
- Guk Jin Lee
- Department of Internal Medicine, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Kwang Wook Jo
- Department of Neurosurgery, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Jeana Kim
- Department of Hospital Pathology, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Il Young Park
- Department of Surgery, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
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15
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Ho TH, Park IY, Zhao H, Tong P, Champion MD, Yan H, Monzon FA, Hoang A, Tamboli P, Parker AS, Joseph RW, Qiao W, Dykema K, Tannir NM, Castle EP, Nunez-Nateras R, Teh BT, Wang J, Walker CL, Hung MC, Jonasch E. High-resolution profiling of histone h3 lysine 36 trimethylation in metastatic renal cell carcinoma. Oncogene 2015; 35:1565-74. [PMID: 26073078 PMCID: PMC4679725 DOI: 10.1038/onc.2015.221] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 03/01/2015] [Accepted: 03/06/2015] [Indexed: 02/07/2023]
Abstract
Mutations in SETD2, a histone H3 lysine trimethyltransferase, have been identified in clear cell renal cell carcinoma (ccRCC); however it is unclear if loss of SETD2 function alters the genomic distribution of histone 3 lysine 36 trimethylation (H3K36me3) in ccRCC. Furthermore, published epigenomic profiles are not specific to H3K36me3 or metastatic tumors. To determine if progressive SETD2 and H3K36me3 dysregulation occurs in metastatic tumors, H3K36me3, SETD2 copy number (CN) or SETD2 mRNA abundance was assessed in two independent cohorts: metastatic ccRCC (n=71) and the Cancer Genome Atlas Kidney Renal Clear Cell Carcinoma data set (n=413). Although SETD2 CN loss occurs with high frequency (>90%), H3K36me3 is not significantly impacted by monoallelic loss of SETD2. H3K36me3-positive nuclei were reduced an average of ~20% in primary ccRCC (90% positive nuclei in uninvolved vs 70% positive nuclei in ccRCC) and reduced by ~60% in metastases (90% positive in uninvolved kidney vs 30% positive in metastases) (P<0.001). To define a kidney-specific H3K36me3 profile, we generated genome-wide H3K36me3 profiles from four cytoreductive nephrectomies and SETD2 isogenic renal cell carcinoma (RCC) cell lines using chromatin immunoprecipitation coupled with high-throughput DNA sequencing and RNA sequencing. SETD2 loss of methyltransferase activity leads to regional alterations of H3K36me3 associated with aberrant RNA splicing in a SETD2 mutant RCC and SETD2 knockout cell line. These data suggest that during progression of ccRCC, a decline in H3K36me3 is observed in distant metastases, and regional H3K36me3 alterations influence alternative splicing in ccRCC.
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Affiliation(s)
- T H Ho
- Division of Hematology and Medical Oncology, Mayo Clinic, Scottsdale, AZ, USA.,Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - I Y Park
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, USA
| | - H Zhao
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Tong
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M D Champion
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Biomedical Statistics and Informatics, Mayo Clinic, Scottsdale, AZ, USA
| | - H Yan
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA.,Department of Biomedical Statistics and Informatics, Rochester, MN, USA
| | - F A Monzon
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, TX, USA
| | - A Hoang
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - P Tamboli
- Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - A S Parker
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL, USA
| | - R W Joseph
- Division of Hematology and Medical Oncology, Mayo Clinic, Jacksonville, FL, USA
| | - W Qiao
- Division of Quantitative Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - K Dykema
- Center for Cancer Genomics and Computational Biology, Van Andel Institute, Grand Rapids, MI, USA
| | - N M Tannir
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - E P Castle
- Department of Urology, Mayo Clinic, Scottsdale, AZ, USA
| | | | - B T Teh
- Center for Cancer Genomics and Computational Biology, Van Andel Institute, Grand Rapids, MI, USA
| | - J Wang
- Department of Bioinformatics and Computational Biology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C L Walker
- Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX, USA
| | - M-C Hung
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - E Jonasch
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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16
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Cha SM, Shin HD, Kim KC, Park IY. Extensive curettage using a high-speed burr versus dehydrated alcohol instillation for the treatment of enchondroma of the hand. J Hand Surg Eur Vol 2015; 40:384-91. [PMID: 24369364 DOI: 10.1177/1753193413517204] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 11/22/2013] [Indexed: 02/03/2023]
Abstract
The purpose of this retrospective study was to compare the clinical and radiological outcomes of patients treated with different adjuvant methods after curettage for enchondromas of the hand. Sixty-two patients with enchondroma were treated with high-speed burring (29 patients) or alcohol instillation (33 patients) after curettage. The mean follow-up was 40.8 months. No significant differences in the visual analogue scale, Disabilities of the Arm, Shoulder, and Hand scores, total range of active motion, grip strength, and complete healing time were observed between the groups. The distribution of the results of the formula by Wilhelm and Feldmeier were not significantly different between the groups. No surgery-related complications, postoperative pathological fractures, or recurrence was found in either group. For the treatment of enchondroma in the metacarpal and proximal phalanx, alcohol instillation immediately after curettage was as effective as extensive curettage using a high-speed burr.
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Affiliation(s)
- S M Cha
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - H D Shin
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - K C Kim
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - I Y Park
- Department of Orthopaedic Surgery, Regional Rheumatoid and Degenerative Arthritis Center, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
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17
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Hong TH, Park IY. MicroRNA expression profiling of diagnostic needle aspirates from surgical pancreatic cancer specimens. Ann Surg Treat Res 2014; 87:290-7. [PMID: 25485236 PMCID: PMC4255547 DOI: 10.4174/astr.2014.87.6.290] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [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: 05/29/2014] [Revised: 06/30/2014] [Accepted: 07/07/2014] [Indexed: 12/15/2022] Open
Abstract
Purpose MicroRNAs (miRNAs) have been widely investigated as potential biomarkers for several malignancies. To establish the feasibility of miRNA expression profiling of small biopsy samples of pancreatic cancers, we assessed expression profiles in freshly collected aspirates obtained immediately after surgical resection of the pancreas. Methods We used separate fine needles (20-23 gauge) to aspirate the pancreatic cancer and adjacent normal pancreatic tissue. miRNAs that were differentially expressed in pancreatic cancers and matched paraneoplastic normal pancreatic tissues were identified using an miRNA microarray. Results We identified 158 aberrantly expressed miRNAs in pancreatic cancers; 51 were overexpressed and 107 underexpressed compared with normal pancreatic tissue. To confirm the microarray findings, quantitative RT-PCR was performed on individual samples. We chose eight miRNAs for further analysis; of which five were overexpressed (miR-21, miR-27a, miR-146a, miR-200a, and miR-196a) and three underexpressed (miR-217, miR-20a, and miR-96) in pancreatic cancer samples compared to benign pancreatic tissue. Expression of miR-21, miR-27a, miR-146a, miR-200a, and miR-196a was significantly increased in cancer fine-needle aspirates relative to matched controls in all samples. Expression of miR-217, miR-20a, and miR-96 was significantly downregulated in almost all pancreatic cancer tissues. Conclusion We demonstrate the feasibility of performing miRNA profiling on very small specimens obtained using fine-needle aspiration of pancreatic cancers.
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Affiliation(s)
- Tae Ho Hong
- Department of Surgery, The Catholic University of Korea, Seoul St. Mary's Hospital, Seoul, Korea
| | - Il Young Park
- Department of Surgery, The Catholic University of Korea, Bucheon St. Mary's Hospital, Bucheon, Korea
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18
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Chung E, Park CH, Kim J, Han NI, Lee YS, Choi HJ, Bae SH, Park IY. [Recurrence of multiple focal nodular hyperplasia in a young male patient]. Korean J Gastroenterol 2014; 64:49-53. [PMID: 25073672 DOI: 10.4166/kjg.2014.64.1.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Focal nodular hyperplasia (FNH) is the second most common benign hepatic tumor that is usually found in women. Diagnosis of FNH mainly depends on imaging studies such as color Doppler flow imaging, computed tomography, and magnetic resonance imaging. It is characterized by the presence of stellate central scar and is nowadays incidentally diagnosed with increasing frequency due to advances in radiologic imaging technique. FNH typically presents as a single lesion in 70% of cases and generally does not progress to malignancy or recur after resection. Herein, we report a case of a young male patient with recurrent multiple FNH who underwent surgical resection for presumed hepatic adenoma on computed tomography.
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Affiliation(s)
- Eun Chung
- Department of General Surgery, The Catholic University of Korea, Bucheon St. Mary's Hospital, 327 Sosa-ro, Wonmi-gu, Bucheon 420-717, Korea
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Kim M, Blum AB, Haslinger ML, Donahue MJ, Fisher DT, Skitzki JJ, Park IY. Quinacrine for extremity melanoma in a mouse model of isolated limb perfusion (ILP). Surg Today 2014; 45:355-62. [PMID: 24998594 DOI: 10.1007/s00595-014-0952-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 02/03/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE Quinacrine is a relatively non-toxic drug, once given almost exclusively for malaria. However, recent studies show that quinacrine can suppress nuclear factor-κB (NF-κB), and activate p53 signaling. We investigated the anti-cancer effect of quinacrine, using a novel mouse model of isolated limb perfusion (ILP) for extremity melanoma. METHOD Female C57BL/6 mice (22-25 g) were injected with B16 melanoma cells (1 × 10(5)) subcutaneously in the distal thigh. After 7 days of tumor establishment, mice were perfused with either PBS, melphalan (90 µg), or quinacrine (3.5 and 4.5 mg) through the superficial femoral artery for 30 min at either 37 or 42 °C in a non-oxygenated circuit. We analyzed morbidity, toxicity, tumor apoptosis, and responses. RESULTS Melanoma cell death following in vitro exposure to quinacrine was dose and time dependent. A significant decrease in mean tumor volume was observed after perfusion with low-dose and high-dose quinacrine (both P = 0.002) at 37 °C as well as after perfusion with low-dose quinacrine (P = 0.0008) at 42 °C. CONCLUSION Quinacrine has demonstrable efficacy against melanoma cells in vitro and in a clinically relevant model of ILP. Further studies to evaluate the optimal conditions for quinacrine usage are warranted.
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Affiliation(s)
- Minhyung Kim
- Department of Surgical Oncology, Roswell Park Cancer Institute, Buffalo, NY, USA,
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Park J, Chung NG, Chae H, Kim M, Lee S, Kim Y, Lee JW, Cho B, Jeong DC, Park IY. FANCA and FANCG are the major Fanconi anemia genes in the Korean population. Clin Genet 2014; 84:271-5. [PMID: 23067021 DOI: 10.1111/cge.12042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2012] [Revised: 10/09/2012] [Accepted: 10/11/2012] [Indexed: 01/17/2023]
Abstract
Fanconi anemia (FA) is a rare disorder characterized by physical abnormalities, bone marrow failure (BMF), increased risk of malignancies, and cellular hypersensitivity to DNA cross-linking agents. This study evaluated the genetic alterations in three major Fanconi genes (FANCA, FANCC, and FANCG) in 30 FA patients using multiplex ligation-dependent probe amplification and direct sequencing. Thirteen BMF patients were genetically classified as FA-A (n = 6, 46%) and FA-G (n = 7, 54%). Four common founder mutations were identified and included two FANCA mutations (c.2546delC and c.3720_3724delAAACA) and two FANCG mutations (c.307+1G>C and c.1066C>T), which had previously been commonly observed in a Japanese FA population. We also detected four novel deleterious mutations: c.2778+1G>C and c.3627-1G>A of FANCA, and c.1589_1591delATA and c.1761-1G>A of FANCG. This study shows that mutations in FANCA and FANCG are common in Korean FA patients and the existence of four common founder mutations in an East Asian FA population. Mutation screening workflow that includes these common mutations may be useful in the creation of an international database, and to better understand the ethnic characteristics of FA.
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Affiliation(s)
- J Park
- Department of Laboratory Medicine, The Catholic University of Korea, Seoul, Korea
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Park J, Chae H, Kim M, Kim Y, Park IY, Shin JC, Park YM. A novel COL7A1 mutation in a Korean patient with Hallopeau-Siemens recessive dystrophic epidermolysis bullosa. Genet Mol Res 2013; 12:678-82. [PMID: 23546949 DOI: 10.4238/2013.march.11.15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dystrophic epidermolysis bullosa (DEB) is an inherited skin fragility disorder that presents various clinical manifestations. DEB is characterized by separation of sublamina densa tissue and abnormalities in the anchoring fibrils that result from mutations in COL7A1 and subsequent defects in type VII collagen. A 16-month-old boy was diagnosed with Hallopeau-Siemens recessive DEB on the basis of typical skin lesions composed of multiple blisters with moderately healed erosions, scarring on trauma-exposed body sites, including hands and feet, pseudosyndactyly and flexion contractures of the toes, and severely dystrophic nails on the right hand. Genomic DNA from the patient and parents were subjected to direct sequencing for the COL7A1 gene. Two heterozygous mutations were detected in the affected child; one novel mutation designated c.4232delC in exon 38 and a single-base substitution (c.6573+1G>C) in intron 81. Deletion of a single cytosine at codon 1411 within exon 38 had produced a frameshift mutation that created a stop codon at codon 1427 (p.Pro1411Leufs*17). This intronic base substitution had led to aberrant splicing and a premature termination codon. This is a novel mutation of COL7A1 associated with DEB in a Korean patient, adding to the range of COL7A1 mutations related to DEB.
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Affiliation(s)
- J Park
- Department of Laboratory Medicine, College of Medicine, Catholic University of Korea, Seoul, Korea
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Kim JH, Chang JH, Nam SM, Lee MJ, Maeng IH, Park JY, Im YS, Kim TH, Park IY, Han SW. Duodenal obstruction following acute pancreatitis caused by a large duodenal diverticular bezoar. World J Gastroenterol 2012; 18:5485-8. [PMID: 23082068 PMCID: PMC3471120 DOI: 10.3748/wjg.v18.i38.5485] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/21/2012] [Accepted: 06/28/2012] [Indexed: 02/06/2023] Open
Abstract
Bezoars are concretions of indigestible materials in the gastrointestinal tract. It generally develops in patients with previous gastric surgery or patients with delayed gastric emptying. Cases of periampullary duodenal divericular bezoar are rare. Clinical manifestations by a bezoar vary from no symptom to acute abdominal syndrome depending on the location of the bezoar. Biliary obstruction or acute pancreatitis caused by a bezoar has been rarely reported. Small bowel obstruction by a bezoar is also rare, but it is a complication that requires surgery. This is a case of acute pancreatitis and subsequent duodenal obstruction caused by a large duodenal bezoar migrating from a periampullary diverticulum to the duodenal lumen, which mimicked pancreatic abscess or microperforation on abdominal computerized tomography. The patient underwent surgical removal of the bezoar and recovered completely.
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Woo SH, Kim TW, Mohy-Ud-Din Z, Park IY, Cho JH. Small intestinal model for electrically propelled capsule endoscopy. Biomed Eng Online 2011; 10:108. [PMID: 22177218 PMCID: PMC3265441 DOI: 10.1186/1475-925x-10-108] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 12/16/2011] [Indexed: 12/14/2022] Open
Abstract
The aim of this research is to propose a small intestine model for electrically propelled capsule endoscopy. The electrical stimulus can cause contraction of the small intestine and propel the capsule along the lumen. The proposed model considered the drag and friction from the small intestine using a thin walled model and Stokes' drag equation. Further, contraction force from the small intestine was modeled by using regression analysis. From the proposed model, the acceleration and velocity of various exterior shapes of capsule were calculated, and two exterior shapes of capsules were proposed based on the internal volume of the capsules. The proposed capsules were fabricated and animal experiments were conducted. One of the proposed capsules showed an average (SD) velocity in forward direction of 2.91 ± 0.99 mm/s and 2.23 ± 0.78 mm/s in the backward direction, which was 5.2 times faster than that obtained in previous research. The proposed model can predict locomotion of the capsule based on various exterior shapes of the capsule.
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Affiliation(s)
- Sang Hyo Woo
- Department of Elec. Eng. and Computer Science, Kyungpook National Univ., Daegu, South Korea.
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Sohn BS, Kim SR, Park IY, Kim EJ. Transvaginal Laparoscopic Cholecystectomy (Hybrid NOTES Cholecystectomy). J Laparoendosc Adv Surg Tech A 2010; 20:245-7. [DOI: 10.1089/lap.2009.0413] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Bo Sung Sohn
- Department of Surgery, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - Seong Ryong Kim
- Department of Surgery, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - Il Young Park
- Department of Surgery, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
| | - Eun Jung Kim
- Department of Gynecology, Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Korea
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Affiliation(s)
- Bo Sung Sohn
- Department of Surgery, Holy Family Hospital, The Catholic University of Korea, Bucheon, Korea
| | - Chung Eun Cho
- Department of Surgery, Holy Family Hospital, The Catholic University of Korea, Bucheon, Korea
| | - Il Young Park
- Department of Surgery, Holy Family Hospital, The Catholic University of Korea, Bucheon, Korea
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Park MH, Song HS, Kim KH, Son DJ, Lee SH, Yoon DY, Kim Y, Park IY, Song S, Hwang BY, Jung JK, Hong JT. Cobrotoxin Inhibits NF-κB Activation and Target Gene Expression through Reaction with NF-κB Signal Molecules. Biochemistry 2005; 44:8326-36. [PMID: 15938622 DOI: 10.1021/bi050156h] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cobrotoxin is known to bind with cysteine residues of biological molecules such as nicotine acetylcholine receptor. Cobrotoxin may modify IKKs and p50 through protein-protein interaction since cysteine residues are present in the kinase domains of IKKalpha and IKKbeta and in the p50 of NF-kappaB. Our surface plasmon resonance analysis showed that cobrotoxin directly binds to p50 (K(d) = 1.54 x 10(-)(5) M), IKKalpha (K(d) = 3.94 x 10(-)(9) M) and IKKbeta (K(d) = 3.4 x 10(-)(8) M) with high binding affinity. Moreover, these protein-protein interactions suppressed the lipopolysaccharide (LPS, 1 microg/mL)- and the sodium nitroprusside (SNP, 200 microM)-induced DNA binding activity of NF-kappaB and NF-kappaB-dependent luciferase activity in astrocytes and Raw 264.7 macrophages. These inhibitory effects were correlated with the inhibition of IkappaB release and p50 translocation. Inhibition of NF-kappaB by cobrotoxin resulted in reductions in the LPS-induced expressions of COX-2, iNOS, cPLA(2), IL-4, and TNF-alpha in astrocytes and in COX-2 expression induced by SNP, LPS, and TNF-alpha in astrocytes. Moreover, these inhibitory effects of cobrotoxin were reversed by adding reducing agents, dithiothreitol and glutathione. In addition, cobrotoxin did not have any inhibitory effect on NF-kappaB activity in cells carrying mutant p50 (C62S), IKKalpha (C178A), and IKKbeta (C179A), with the exception of IKKbeta (K44A) mutant plasmid. Confocal microscopic analysis showed that cobrotoxin is uptaken into the nucleus of cells. These results demonstrate that cobrotoxin directly binds to the sulfhydryl groups of p50 and IKKs, and that this results in reduced IkappaB release and the translocation of p50, thereby inhibiting the activation of NF-kappaB.
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Affiliation(s)
- Mi Hee Park
- College of Pharmacy, Chungbuk National University, 48, Gaesin-dong, Heungduk-gu, Cheongju, Chungbuk 361-763, Korea
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Rezansoff AJ, Hunter HN, Jing W, Park IY, Kim SC, Vogel HJ. Interactions of the antimicrobial peptide Ac-FRWWHR-NH2 with model membrane systems and bacterial cells. ACTA ACUST UNITED AC 2005; 65:491-501. [PMID: 15853943 DOI: 10.1111/j.1399-3011.2005.00263.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The acetylated and amidated hexapeptide FRWWHR (combi-2), previously identified by combinatorial chemistry methods, shows strong antimicrobial activity. The binding of the peptide to 1-palmitoyl-2-oleoyl-sn-glycero-3-[(phospho-rac-(1-glycerol)] (POPG) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) vesicles was studied using fluorescence spectroscopy and isothermal titration calorimetry (ITC). Differential scanning calorimetry (DSC) with dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidylglycerol (DPPG) multilamellar vesicles was performed to determine changes in the lipid phase behaviour upon binding the peptide. Two-dimensional proton nuclear magnetic resonance (NMR) spectroscopy, to solve the bound peptide structure, was performed in the presence of dodecylphosphatidylcholine (DPC) and sodium dodecyl sulphate (SDS) micelles. The fluorescence, ITC and DSC studies indicate that the peptide interacts preferentially with lipid vesicles containing negatively charged head groups. Conformational information determined using NMR indicate that the combi-2 peptide adopts a coiled amphipathic conformation when bound to SDS and DPC micelles. Leakage assays indicate that the peptide is not very efficient at causing leakage from calcein-filled large unilamellar vesicles comprised of POPG/POPC (1 : 1). The rapid passage of either the fluorescent-tagged peptides combi-2 or the previously studied peptide Ac-RRWWRF-NH(2) (combi-1) into Escherichia coli and Staphylococcus aureus suggests that instead of membrane disruption, the main bactericidal site of action of these peptides might be located inside bacteria.
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Affiliation(s)
- A J Rezansoff
- Structural Biology Research Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada T2N1N4
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28
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Baek JM, Sung GY, Lee DS, Chun KH, Lee DH, Seo YJ, Choi SH, Park WC, Kim JS, Song BJ, Oh SJ, Kim W, Park IY, Jung SS, Lim KW, Won JM, Chun CS, Lee JH, Kim JA. Expression of estrogen receptor β, estrogen receptor α and cyclooxygenase II in advanced breast cancer. J Breast Cancer 2005. [DOI: 10.4048/jbc.2005.8.2.45] [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: 11/30/2022] Open
Affiliation(s)
- Jong Min Baek
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Gi Young Sung
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Do Sang Lee
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Kyung Hwa Chun
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Dong Ho Lee
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Young Jin Seo
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Seung Hye Choi
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Woo Chan Park
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Jeong Soo Kim
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Byung Joo Song
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Se Jeong Oh
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Wook Kim
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Il Young Park
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Sang Seol Jung
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Keun Woo Lim
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Jong Man Won
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Chung Soo Chun
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Jae Hak Lee
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Jean A Kim
- Department of Clinical Pathology, The Catholic University of Korea, Seoul, Korea
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Affiliation(s)
- Jong Min Baek
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Gi Young Sung
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Do Sang Lee
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Wook Kim
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Il Young Park
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Sang Seol Jung
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
| | - Jong Man Won
- Department of Surgery, The Catholic University of Korea, Seoul, Korea
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Choi JE, Chung HJ, Yoo WJ, Chung MH, Sung MS, Lee HG, Park IY, Kim J. Retroperitoneal malignant mesenchymoma: a case of mesenchymal mixed tumor with osteosarcoma, leiomyosarcoma, liposarcoma and fibrosarcoma. Korean J Radiol 2002; 3:264-6. [PMID: 12514345 PMCID: PMC2713850 DOI: 10.3348/kjr.2002.3.4.264] [Citation(s) in RCA: 5] [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] [Indexed: 11/30/2022] Open
Abstract
Malignant mesenchymoma is an interesting but very rare tumor in which malignant differentiation has occurred twice or more. We report a case of retroperitoneal malignant mesenchymoma consisting of osteosarcoma, leiomyosarcoma, liposarcoma and fibrosarcoma. Abdominal CT showed a large retroperitoneal mass with two separate and distinct parts, namely an area of prominent calcification and one of clearly enhancing solid components. The mass contained histologically distinct tumorous components with no histologic admixure at the interfaces. The densely calcified nodule corresponded to osteosarcoma, and the noncalcified clearly enhancing nodules to leiomyosarcoma, liposarcoma and fibrosarcoma.
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Affiliation(s)
- Jung Eun Choi
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Hong Jun Chung
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Won Jong Yoo
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Myung Hee Chung
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Mi Sook Sung
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Hae Giu Lee
- Department of Radiology, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Il Young Park
- Department of General Surgery, Holy Family Hospital, The Catholic University of Korea, Korea
| | - Jeana Kim
- Department of Pathology, Holy Family Hospital, The Catholic University of Korea, Korea
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Abstract
OBJECTIVES Although complete anatomical knowledge of the nasofrontal duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the nasofrontal duct and to investigate the anatomical boundaries of the nasofrontal duct according to the drainage site. STUDY DESIGN One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. METHODS Computed tomography scans of 50 adult cadaver heads were taken sagittally at 1-mm intervals and coronally at 3-mm intervals to find the nasofrontal duct. One hundred specimens, made up of sagittally divided adult cadaver heads, were dissected under the microscope to study the structure of the nasofrontal duct. RESULTS We identified the anterior, posterior, medial, and lateral boundaries of the nasofrontal duct. In the most common type, the superior portion of the uncinate process formed the anterior border and the superior portion of the bulla ethmoidalis formed the posterior border of the nasofrontal duct. The conchal plate formed the medial border and the suprainfundibular plate formed the lateral border of the nasofrontal duct. Other variations are described in detail. CONCLUSIONS To widen the nasofrontal communication, removing the upper portion of the ground lamella of the ethmoid bulla, which is the posterior boundary of the nasofrontal duct, with cutting forceps seems to be a safe and easy method.
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Affiliation(s)
- K S Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Han YM, Kim SJ, Park JS, Park IY, Kang YK, Lee CS, Koo DB, Lee TH, Yu DY, Kim YH, Lee KJ, Lee KK. Blastocyst viability and generation of transgenic cattle following freezing of in vitro produced, DNA-injected embryos. Anim Reprod Sci 2000; 63:53-63. [PMID: 10967240 DOI: 10.1016/s0378-4320(00)00168-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This study examined whether the viability, determined in vitro, of DNA-injected bovine embryos produced in vitro was affected by freezing, and if the frozen embryos developed to term following transfer to recipients. In vitro fertilized zygotes were injected with the pBL1 gene and then co-cultured with mouse embryonic fibroblasts (MEF) in CR1aa medium. Embryos were prepared for cryopreservation by exposure to a 10% (v/v) glycerol solution, loaded into 0.25 ml straws and then frozen by conventional slow freezing. Thawing was by rapid warming in water (37 degrees C) and embryos were rehydrated in PBS diluents of 6%, 3% and 0% (v/v) glycerol supplemented with 0.25 M sucrose and 0.5% (w/v) BSA. In Experiment 1, blastocysts that developed from DNA-injected embryos were individually classified into three morphological groups and three stages of development prior to freezing. DNA-injected blastocysts of excellent quality at freezing showed a higher survival rate (78.8+/-10.6%) after thawing than those of good (60. 9+/-16.4%) or fair (12.5+/-5.9%) quality (P<0.05). Post-thaw survival rate, judged in vitro, increased with more advanced stage of blastocyst development at freezing (early 48.8+/-15.9%, mid 52. 1+/-12.6% and expanded 71.2+/-1.1; P<0.05). In Experiment 2, the frozen/thawed embryos were transferred to recipients to examine in vivo viability. Following transfer of one or two embryos per recipient, pregnancy rates at 60 days of gestation were 13.6% (13/96) for frozen embryos and 26.5% (43/162) for fresh embryos (P<0. 05). Of the 12 live calves born from the frozen/thawed embryos, two males (18.3%) were transgenic. None of the live-born calves derived from fresh embryos exhibited the transgene. One of transgenic bulls did not produce transgenic sperm. Three out of 23 calves (13.0%) produced from cows inseminated with semen of the other bull were transgenic, suggesting that this animal was a germ-line mosaic. These studies indicated that the viability of in vitro produced, DNA-injected bovine blastocysts was affected by freezing and by both the quality and stage of development of the embryo prior to freezing. The generation of transgenic cattle demonstrates that it is feasible to freeze DNA-injected, in vitro produced embryos.
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Affiliation(s)
- Y M Han
- Korea Research Institute of Bioscience and Biotechnology, P.O. Box 115, Yusong, 305-600, Taejon, South Korea
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Koo DB, Kang YK, Choi YH, Park JS, Han SK, Park IY, Kim SU, Lee KK, Son DS, Chang WK, Han YM. In vitro development of reconstructed porcine oocytes after somatic cell nuclear transfer. Biol Reprod 2000; 63:986-92. [PMID: 10993818 DOI: 10.1095/biolreprod63.4.986] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
This study was designed to examine the developmental ability of porcine embryos after somatic cell nuclear transfer. Porcine fibroblasts were isolated from fetuses at Day 40 of gestation. In vitro-matured porcine oocytes were enucleated and electrically fused with somatic cells. The reconstructed eggs were activated using electrical stimulus and cultured in vitro for 6 days. Nuclear-transferred (NT) embryos activated at a field strength of 120 V/mm (11.6 +/- 1.6%) showed a higher developmental rate as compared to the 150-V/mm group (6.5 +/- 2.3%) (P: < 0.05), but the mean cell numbers of blastocysts were similar between the two groups. Rates of blastocyst development from NT embryos electrically pulsed at different times (2, 4, and 6 h) after electrofusion were 11.6 +/- 2.9, 6.6 +/- 2.3, and 8.1 +/- 3.3%, respectively. The mean cell numbers of blastocysts developed from NT embryos were gradually decreased (30.4 +/- 10.4 > 24.6 +/- 10.1 > 16.5 +/- 7.4 per blastocyst) as exposure time (2, 4, and 6 h) of nuclei to oocyte cytoplast before activation was prolonged. There was a significant difference in the cell number between the 2- and 6-h groups (P: < 0. 05). Nuclear-transferred embryos (9.4 +/- 0.9%) had a lower developmental rate than in vitro fertilization (IVF)-derived (21.4 +/- 1.9%) or parthenogenetic embryos (22.4 +/- 7.2%) (P: < 0.01). The mean cell number (28.9 +/- 11.4) of NT-derived blastocysts was smaller than that (38.6 +/- 10.4) of IVF-derived blastocysts (P: < 0. 05) and was similar to that (29.9 +/- 12.1) of parthenogenetic embryos. Our results suggest that porcine NT eggs using somatic cells after electrical activation have developmental potential to the blastocyst stage, although with smaller cell numbers compared to IVF embryos.
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Affiliation(s)
- D B Koo
- Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon 305-600, Korea. National Livestock Research Institute, Chonan 330-800, Suwon 441-350, Korea
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Yoon JH, Kim KS, Kim SS, Lee JG, Park IY. Secretory differentiation of serially passaged normal human nasal epithelial cells by retinoic acid: expression of mucin and lysozyme. Ann Otol Rhinol Laryngol 2000; 109:594-601. [PMID: 10855573 DOI: 10.1177/000348940010900612] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to subculture normal human nasal epithelial (NHNE) cells without compromising their ability to differentiate into secretory and ciliated cells and to study the effect of retinoic acid on mucous and serous secretions in passaged cells and to compare the expression of mucin and lysozyme in cultured cells with those in in vivo nasal epithelium. The subcultured cells were tested after every passage for secretory differentiation in air-liquid interface cultures. The cultured NHNE cells secreted mucin and lysozyme. The cells became squamous and mucin secretion decreased when retinoic acid was deleted from the culture media. Cells from passage 1 through passage 2 remained able to differentiate into mucous or squamous cells. Mucin gene 4 (MUC4), MUC5AC, MUC7, MUC8, and lysozyme messenger RNAs were expressed in passage 2 NHNE cells. In conclusion, passage 2 NHNE cell cultures retain features of normal epithelium and are suitable for many studies of upper airway cell biology.
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Affiliation(s)
- J H Yoon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Kim SS, Kim KS, Lee JG, Park IY, Koo JS, Yoon JH. Levels of intracellular protein and messenger RNA of mucin and lysozyme in normal human nasal and polyp epithelium. Laryngoscope 2000; 110:276-80. [PMID: 10680929 DOI: 10.1097/00005537-200002010-00017] [Citation(s) in RCA: 45] [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] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Mucus hypersecretion is a characteristic feature in chronic sinusitis with nasal polyps. The objective of this study is to examine whether the polyp epithelium itself contributes to a certain extent to the increased mucous secretions in chronic sinusitis with nasal polyps, and if it does, to determine which mucin genes are responsible for the increased mucin secretion. METHODS Three pooled samples of normal nasal epithelial cells from each subject were obtained by scrapings from the inferior turbinates of 30 healthy adult volunteers and nasal polyps from 6 patients who underwent intranasal ethmoidectomy and polypectomy. Isolated epithelial cells were used for total RNA isolation for reverse transcriptase polymerase chain reaction and cell lysates for immunoblotting. RESULTS The intracellular level of mucin from polyp epithelium was 2.9 times higher than that of normal nasal epithelium (P < .05). Interestingly, MUC2 and MUC8 messenger RNA (mRNA) levels were clearly upregulated in polyp epithelium compared with those of normal turbinate epithelium. CONCLUSIONS Polyp epithelium can be considered to contribute in part to increased secretion in chronic sinusitis with polyps, and increased mucous secretion might be related to the increased mRNA level of MUC2 or MUC8 or both.
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Affiliation(s)
- S S Kim
- College of Medicine, Catholic University, Seoul, Korea
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Kim GE, Cho JH, Yang WI, Chung EJ, Suh CO, Park KR, Hong WP, Park IY, Hahn JS, Roh JK, Kim BS. Angiocentric lymphoma of the head and neck: patterns of systemic failure after radiation treatment. J Clin Oncol 2000; 18:54-63. [PMID: 10623693 DOI: 10.1200/jco.2000.18.1.54] [Citation(s) in RCA: 247] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To investigate the patterns of systemic failure and the clinical outcome in patients with angiocentric lymphoma of the head and neck who were treated with radiation alone, and to discuss the optimal mode of treatment for these patients. PATIENTS AND METHODS We reviewed the records of 92 patients with stage I or II angiocentric lymphoma who were treated at Yonsei Cancer Center between 1976 and 1994. All patients were treated with involved-field irradiation. Radiation doses ranged from 40 to 60 Gy (median dose, 50.4 Gy). Treatment response, patterns of treatment failure including systemic failure, and clinical outcome after radiation treatment were analyzed. RESULTS The most frequently involved site was the nasal cavity, either alone or in conjunction with other sites. In 16 patients (17.4%), angiocentric lymphoma was accompanied by cervical lymphadenopathy. Disease was classified as stage I in 62 patients (67.4%) and stage II in 30 patients (32.6%). After completion of radiation treatment, 61 patients (66.3%) achieved a complete response and 16 (17.4%) a partial response. Half of the patients (50.0%) ultimately experienced local recurrence with or without other components of failure, whereas regional failure was relatively uncommon (10.9%). Systemic failure occurred in 25.0% of patients during follow-up. Six patients had histologic findings identical to those at the time of the original disease (group I), whereas four patients exhibited morphologic features of frank lymphomas (group II). The majority of patients with systemic relapse had the predilection sites for widespread extranodal involvement, such as the skin, brain, lung, gastrointestinal tract, or testes. In addition, seven patients died from various medical illnesses or immunologic disorders, including hemophagocytic syndrome and second primary cancers (group III). After a median follow-up of 56 months, the overall survival and disease-free survival rates for all patients were 40.1% and 37.8%, respectively. All patients except one with systemic failure died within 1 year. CONCLUSION Treatment with radiation alone had suboptimal results, partly because of the occurrence of a variety of systemic failure with diverse clinicopathologic features. Given the frequent occurrence of systemic failure after radiation treatment, we believe that the multimodality treatment approach containing more effective chemotherapeutic agents should be incorporated in the treatment of angiocentric lymphoma confined to the head and neck.
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Affiliation(s)
- G E Kim
- Department of Radiation Yonsei University College of Medicine, Yonsei Cancer Center, Seoul, Korea
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Kim SJ, Sohn BH, Jeong S, Pak KW, Park JS, Park IY, Lee TH, Choi YH, Lee CS, Han YM, Yu DY, Lee KK. High-level expression of human lactoferrin in milk of transgenic mice using genomic lactoferrin sequence. J Biochem 1999; 126:320-5. [PMID: 10423524 DOI: 10.1093/oxfordjournals.jbchem.a022452] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In our previous study, transgenic mice were generated that expressed human lactoferrin (hLF) in milk using cDNA under control of the 2 kb bovine beta-casein promoter. The expression level of the protein in milk of 7 mice ranged from 1 to 200 microg/ml; 1 to 34 microg/ml in 6 mice and 200 microg/ml in 1 mouse. With the aim of inducing higher expression of the protein, we constructed an expression cassette comprised of 10 kb of the bovine beta-casein gene promoter and the hLF genomic sequence in place of the cDNA. The hLF genomic sequence of about 27 kb, spanning 23 kb of the entire coding region and 4 kb of the 3'-flanking sequence, was placed downstream the bovine beta-casein promoter. In total, 8 transgenic mice were generated from 31 mice (transgenic rate of 25.8%) born from the embryos microinjected with the 40-kb hLF expression cassette. Mammary-specific expression of the transgene was addressed by performing Northern hybridization of the total RNAs from various tissues of transgenic mice. Immunoblot analysis showed that the recombinant protein expressed in milk has the same molecular weight as the native protein. The amount of the protein in milk of 5 mice ranged from 60 to 6,600 microg/ml when judged by ELISA analysis. Three mice expressed the protein at the level higher than 500 microg/ml. These data suggest that the genomic lactoferrin sequence represents a valuable element for the efficient expression of the protein in milk of transgenic animals.
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Affiliation(s)
- S J Kim
- Animal Molecular Physiology Research Unit Korea Research Institute of Bioscience and Biotechnology, Taejon, 305-333, Korea
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Lee SW, Park IY, Hahn Y, Lee JE, Seong CS, Chung JH, Park YS. Cloning of mouse sepiapterin reductase gene and characterization of its promoter region. Biochim Biophys Acta 1999; 1445:165-71. [PMID: 10209270 DOI: 10.1016/s0167-4781(99)00030-5] [Citation(s) in RCA: 8] [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] [Indexed: 11/22/2022]
Abstract
We have isolated and characterized approximately 5 kb mouse sepiapterin reductase gene (Spr) and a highly homologous pseudogene (Sprp). The authentic Spr gene is present as a single copy in the mouse genome and is composed of three exons containing the entire coding region. The primer extension experiment located the transcription initiation site in a putative pyrimidine-rich Inr element. The promoter region of the Spr gene is embedded within a CpG island. It was shown that the promoter region is devoid of distinctive TATA and CAAT boxes. Transient transfection of a series of 5' deletion derivatives of the Spr promoter showed the sequence between -83 and -51 to be essential for promoter activity. The pseudogene Sprp lacks promoter region and exon 3.
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Affiliation(s)
- S W Lee
- Department of Microbiology, Inje University, Kimhae 621-749, South Korea
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Yoon JH, Park IY. Mucin gene expression and mucin secretion in human airway epithelium. Rhinology 1998; 36:146-52. [PMID: 9923055] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- J H Yoon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Affiliation(s)
- I Y Park
- Department of Surgery, Holy Family Hospital, Catholic University of Korea, Pucheon City, Korea
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Abstract
In response to epidermal injury, Parasilurus asotus, a catfish, secreted a strong antimicrobial peptide into the epithelial mucosal layer. The molecular mass of the antimicrobial peptide, named parasin I, was 2000.4 Da, as determined by matrix-associated laser desorption ionization mass spectrometry. The complete amino acid sequence of parasin I, which was determined by automated Edman degradation, was Lys-Gly-Arg-Gly-Lys-Gln-Gly-Gly-Lys-Val-Arg-Ala-Lys-Ala-Lys-Thr-Arg-Ser- Ser. Eighteen of the 19 residues in parasin I were identical to the N-terminal of buforin I, a 39-residue antimicrobial peptide derived from the N-terminal of toad histone H2A [Kim et al. (1996) Biochem. Biophys. Res. Commun. 229, 381-387], which implies that parasin I was cleaved off from the N-terminal of catfish histone H2A. Parasin I showed strong antimicrobial activity, about 12-100 times more potent than magainin 2, against a wide spectrum of microorganisms, without any hemolytic activity. Circular dichroism spectra of parasin I indicated a structural content of 11% alpha-helix, 33% beta-sheet, and 56% random coils. The beta-sheet axial projection diagram of parasin I showed an amphipathic structure. Our results indicate that the catfish may produce parasin I from its histone H2A by a specific protease upon injury to protect against invasion by microorganisms.
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Affiliation(s)
- I Y Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, South Korea
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Abstract
Effect of the replication mode of a plasmid on the stability of tandemly multimerized endoxylanase genes and a gene dose-dependent expression of the endoxylanase were studied in Bacillus subtilis. The structural genes encoding an endoxylanase, carrying its original promoter and ribosomal binding sequence, were tandemly multimerized and cloned into the Escherichia coli-B. subtilis shuttle plasmid, pJH27 delta 88 or pMTL500e, which has a rolling circle-replicon or a theta (theta)-replicon in B. subtilis, respectively. The cloned dimers in pJH27 delta 88, which has a rolling circle-replicon, spontaneously rearranged to monomers in B. subtilis DB104, whereas those in pMTL500e, having a theta (theta)-replicon, were stably maintained. Expression level of the endoxylanase was proportional to the gene dosage in multimers. The endoxylanase activity in the supernatant increased from 80 U ml-1 with pMTL-1x containing a monomer of the gene to 165 U ml-1 with pMTL-4x containing a tetramer. These results indicate that high level expression of the endoxylanase gene can be obtained by tandemly multimerizing the genes in a plasmid with a theta (theta)-replicon.
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Affiliation(s)
- P C Lee
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, South Korea
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Oleshko VP, Gijbels RH, Van Daele AJ, Jacob WA, Xu YE, Wang SE, Park IY, Kang TS. Combined characterization of composite tabular silver halide microcrystals by cryo-EFTEM/EELS and cryo-STEM/EDX techniques. Microsc Res Tech 1998; 42:108-22. [PMID: 9728882 DOI: 10.1002/(sici)1097-0029(19980715)42:2<108::aid-jemt5>3.0.co;2-p] [Citation(s) in RCA: 7] [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] [Indexed: 11/06/2022]
Abstract
The combination of cryo-energy filtering transmission electron microscopy (EFTEM)/electron spectroscopic diffraction (ESD)/electron energy-loss spectroscopy (EELS) and cryo-energy-dispersive X-ray (EDX) analysis in the scanning transmission (STEM) and scanning (SEM) modes was applied for the characterization of composite tabular Ag(Br,I) microcrystals. A low-loss fine structure in EEL spectra between 4 and 26 eV was attributed to excitons and plasmons possibly superimposed with interband transitions and many-electron effects. The contrast tuning under the energy-filtering in the low-loss region was used to image the crystal morphology, defect structure (random dislocations and ¿111¿ stacking faults) and bend and edge contours as well as electron excitations in the microcrystals. Sharp extra reflections at commensurate positions in between the main Bragg reflections and diffuse honeycomb contours in ESD patterns of the microcrystals taken near the [111] zone were assigned to the number of defects in the shell region parallel to the grain edges and polyhedral clusters of interstitial silver cations, respectively. The imaginary part of the energy-loss function, Im (-1/epsilon), and the real and imaginary parts, epsilon1 and epsilon2, of the dielectric permittivity were determined by means of a Kramers-Kronig analysis. An assignment of exciton peaks based on calculations of electronic band structure of silver bromide is proposed. Inner-shell excitation bands of silver halide were detected in line with EDX-analyses. The energy-loss near-edge structure (ELNES) of the AgM4,5-edge governed by spin-orbital splitting between the 3d3/2- and 3d5/2-states has been evaluated. Combined silver and halide distributions were obtained by a three-window method (EFTEM) and by EDX/STEM including area mapping and line profiling of iodide.
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Affiliation(s)
- V P Oleshko
- Micro- and Trace Analysis Center, Department of Chemistry, University of Antwerp (UIA), Wilrijk-Antwerpen, Belgium.
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Jeong KJ, Park IY, Kim MS, Kim SC. High-level expression of an endoxylanase gene from Bacillus sp. in Bacillus subtilis DB104 for the production of xylobiose from xylan. Appl Microbiol Biotechnol 1998; 50:113-8. [PMID: 9720207 DOI: 10.1007/s002530051264] [Citation(s) in RCA: 35] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
To produce xylobiose from xylan, high-level expression of an endoxylanase gene from Bacillus sp. was carried out in Bacillus sabtilis DB104. A 1.62-kb SmaI DNA fragment, coding for an endoxylanase of Bacillus sp., was ligated into the Escherichia coli/B. subtilis shuttle vector pJH27 delta 88, producing pJHKJ4, which was subsequently transformed into B. subtilis DB104. A maximum endoxylanase activity of 105 U/ml was obtained from the supernatant of B. subtilis DB104 harboring pJHKJ4. The endoxylanase was purified to homogeneity by ion-exchange chromatography and the production profile of xylooligosaccharides from xylan by the endoxylanase was examined by HPLC with a carbohydrate analysis column. Xylobiose was the major product from xylan at 40 degrees C and its proportion in the xylan hydrolyzates increased with the reaction time; at 12 h, over 60% of the reaction products was xylobiose. These results suggest that xylobiose, which has a stimulatory effect on the selective growth of the intestinal bacterium Bifidobacterium, can be mass-produced effectively by the endoxylanase of Bacillus sp. cloned in B. subtilis.
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Affiliation(s)
- K J Jeong
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejon, Korea
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Jeong KJ, Lee PC, Park IY, Kim MS, Kim SC. Molecular cloning and characterization of an endoxylanase gene of Bacillus sp. in Escherichia coli. Enzyme Microb Technol 1998; 22:599-605. [PMID: 9621449 DOI: 10.1016/s0141-0229(97)00256-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A gene encoding an endoxylanase of Bacillus sp. was cloned and expressed in Escherichia coli. The entire nucleotide sequence of a 1,620 bp SmaI fragment containing the endoxylanase gene was determined. The endoxylanase gene was 639 bp long and encoded 213 amino acids which showed up to 96% amino acid homology with other endoxylanases. The endoxylanase produced by E. coli harboring pKJX4 was purified by ion-exchange chromatography (DE-52 and CM-52) and its N-terminal sequence was determined to be Ala-Gly-Thr-Asp-Tyr-Trp-Gln-Asn-Trp-Thr-Asp-Gly-Gly-Gly-Thr. The endoxylanase expressed in E. coli was identical to that of the original Bacillus sp. whose molecular weight was approximately 20,400. Most of the produced endoxylanase was localized in the periplasmic space of E. coli. When the endoxylanase was reacted with 2% oat spelts xylan (w/v) at 40 degrees C for 10 h, the major product was xylobiose which is known to be a selective growth stimulant to one of the healthy intestinal microflora, Bifidobacteria.
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Affiliation(s)
- K J Jeong
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Kusong-dong Yusong-ku, Taejon, South Korea
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Abstract
A novel antimicrobial peptide, named misgurin, was isolated and characterized from the loach (mudfish), Misgurnus anguillicaudatus. The 21-amino-acid peptide with a molecular mass of 2502 Da was purified to homogeneity using a heparin-affinity column and C18 reverse-phase and gel-permeation high-performance liquid chromatography. The complete amino acid sequence of misgurin, which was determined by an automated amino acid sequencer, was Arg-Gln-Arg-Val-Glu-Glu-Leu-Ser-Lys-Phe-Ser-Lys-Lys-Gly-Ala-Ala-Ala-Arg- Arg-Arg-Lys. Misgurin is a strongly basic peptide which has 5 arginine and 4 lysine residues. Comparison of the amino acid sequence with those of other known antimicrobial peptides revealed that misgurin was a novel antimicrobial peptide. Misgurin showed a strong antimicrobial activity in vitro against a broad spectrum of microorganisms without significant hemolytic activity and was about 6 times more potent than magainin 2. Scanning electron microscopy confirmed that the peptide caused damage to the cell membrane by a pore-forming mechanism similar to that of magainin 2. This damage occurred at the minimal inhibition concentration (MIC), but at higher concentration than MIC it lysed the cell.
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Affiliation(s)
- C B Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Taejeon
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Valdivia LA, Sun H, Rao AS, Tsugita M, Chen CT, Park IY, Fung JJ, Starzl TE. Donor-specific transfusion in the nude rat prolongs survival of subsequently transplanted hamster cardiac xenografts. Transplant Proc 1997; 29:928-9. [PMID: 9123590 PMCID: PMC2967296 DOI: 10.1016/s0041-1345(96)00243-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- L A Valdivia
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pennsylvania 15213, USA
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Sun H, Wakizaka Y, Rao AS, Pan F, Madariaga J, Park IY, Celli S, Fung JJ, Starzl TE, Valdivia LA. Use of MHC class I or II "knock out" mice to delineate the role of these molecules in acceptance/rejection of xenografts. Transplant Proc 1996; 28:732. [PMID: 8623370 PMCID: PMC2993564] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- H Sun
- Pittsburgh Transplantation Institute, University of Pittsburgh Medical Center, Pennsylvania, USA
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Pan F, Tsugita M, Rao AS, Wakizaka Y, Sun H, Park IY, Fung JJ, Starzl TE, Valdivia LA. Effect of tacrolimus and splenectomy on engraftment and GVHD after bone marrow xenotransplantation in the reciprocal hamster to rat animal models. Transplant Proc 1996; 28:736-7. [PMID: 8623373 PMCID: PMC2954625] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- F Pan
- Pittsburgh Transplantation Institute, University of Pittsburgh Medical Center, Pennsylvania, USA
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Lee WY, Lee JM, Park KH, Park C, Chang M, Hong WP, Park IY. Coxiella burnetii in polymorphic lymphocytes in tissue and blood of patients with polymorphic reticulosis. Acta Virol 1995; 39:269-74. [PMID: 8722296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Coxiella burnetii is a well-known causative agent of granulomatous inflammation and an inducer of morphological changes and transformation of human B lymphocytes in vitro. An association of the organism with polymorphic reticulosis (PMR), a malignant granulomatous inflammation characterized by polymorphic lymphocytes, was examined. The infection of C. burnetii was demonstrated in all cases tested, especially in polymorphic lymphocytes. Also the presence of morphologically transformed peripheral blood lymphocytes (PBLs) infected with C. burnetii was demonstrated. In cultures of blood lymphocytes, C. burnetii-infected polymorphic cells identified as B cells became immortalized in vitro. These findings implicate the role of C. burnetii in the process of PMR.
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Affiliation(s)
- W Y Lee
- Department of Microbiology, Yonsei University, College of Medicine, Seoul, South Korea
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