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Yoo JC, Kim MS, Sohn S, Woo SH, Choi YR, Kwak AS, Lee DS. Atelocollagen Scaffold Enhances Cartilage Regeneration in Osteochondral Defects: A Study in Rabbits. Tissue Eng Regen Med 2024; 21:329-339. [PMID: 37853285 PMCID: PMC10825099 DOI: 10.1007/s13770-023-00589-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/19/2023] [Accepted: 08/08/2023] [Indexed: 10/20/2023] Open
Abstract
BACKGROUND To enhance articular cartilage healing, microfractures (Mfx) and bone marrow aspirate concentrate (BMAC) are commonly used, and some form of scaffold is often used together to increase its efficacy. Herein, we compared the efficacy of atelocollagen scaffold to that of collagen scaffold when used with Mfx or BMAC on osteochondral defect of animal. METHODS This experiment was designed in two stages, and therapeutic effects of Mfx and BMAC were respectively evaluated when used with atelocollagen or collagen scaffold. Femoral condyle defects were artificially created in male New Zealand White rabbits, and in each stage, 12 rabbits were randomly allocated into three treatment groups: test group with additional atelocollagen scaffold, the positive control group with collagen scaffold, and the negative control group. Then, for 12 weeks, macroscopic and histological evaluations were performed. RESULTS At 12 weeks, defects in the test group were fully regenerated with normal cartilage-like tissue, and were well integrated with the surrounding cartilage at both stages experiment, whereas defects in the control groups were not fully filled with regenerated tissue, and the tissue appeared as fibrous tissue. Histologically, the regenerated tissue in the test group showed a statistically significant improvement compared to the positive and negative control groups, achieving a similar structure as normal articular cartilage. CONCLUSION The results showed that implantation of the atelocollagen scaffold enhanced cartilage regeneration following osteochondral defects in rabbits. This suggests that the atelocollagen scaffold can be used with Mfx or BMAC for effective regeneration of osteochondral defects.
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Affiliation(s)
- Ji-Chul Yoo
- R&D Division, Cellontech Co., Ltd, 04783, Seoul, Republic of Korea.
| | - Man Soo Kim
- Department of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University, Seoul, Republic of Korea
| | - Sueen Sohn
- Department of Orthopaedic Surgery, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - Sang Hun Woo
- R&D Division, Cellontech Co., Ltd, 04783, Seoul, Republic of Korea
| | - Yu Ri Choi
- R&D Division, Cellontech Co., Ltd, 04783, Seoul, Republic of Korea
| | - Andrew S Kwak
- R&D Division, Cellontech Co., Ltd, 04783, Seoul, Republic of Korea
| | - Dong Shin Lee
- R&D Division, Cellontech Co., Ltd, 04783, Seoul, Republic of Korea
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Almendros A, Choi YR, Leung TL, Tam WYJ, Hernandez Muguiro D, Woodhouse FM, Gray JJ, Beatty JA, Barrs VR. Low prevalence of Babesia hongkongensis infection in community and privately-owned cats in Hong Kong. Ticks Tick Borne Dis 2024; 15:102278. [PMID: 37979475 DOI: 10.1016/j.ttbdis.2023.102278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/05/2023] [Accepted: 10/26/2023] [Indexed: 11/20/2023]
Abstract
Domestic cats are susceptible to infection with at least 11 species of Babesia. In Hong Kong, where dogs are commonly infected with B. gibsoni, a single infection in a cat by a novel species, B. hongkongensis, was reported previously. The aim of this study was to investigate the frequency of Babesia spp. detection in cats in Hong Kong. Residual blood-derived DNA from healthy free-roaming community cats (n = 239), and privately-owned cats with and without anaemia undergoing diagnostic investigations (n = 125) was tested for Babesia spp. DNA using a pan-Babesia PCR targeting mitochondrial Cytochrome B, and a B. hongkongensis specific PCR targeting 18S rRNA. Positive samples were confirmed by sequencing and comparative sequence analysis against the GenBank nucleotide database. Babesia hongkongensis was detected in 4/239 (1.7 %) community cats, and 0/125 (0.0 %) privately-owned cats. Babesia gibsoni was detected in 0/239 community cats and 1/125 (0.8 %) privately-owned cats. Cats infected with B. hongkongensis were clinically healthy at the time of sampling. The B. gibsoni-infected cat was anaemic and thrombocytopenic. Cats in Hong Kong can be infected with B. hongkongensis and B. gibsoni, albeit at low frequency. The tick vector for B. hongkongensis is yet to be identified.
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Affiliation(s)
- A Almendros
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China.
| | - Y R Choi
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China; Centre for Animal Health and Welfare, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
| | - T L Leung
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
| | - W Y J Tam
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
| | - D Hernandez Muguiro
- Veterinary Diagnostic Laboratory, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
| | - F M Woodhouse
- The Society for the Prevention of Cruelty to Animals, Wan Chai, Hong Kong Special Administrative Region of China
| | - J J Gray
- The Society for the Prevention of Cruelty to Animals, Wan Chai, Hong Kong Special Administrative Region of China
| | - J A Beatty
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China; Centre for Animal Health and Welfare, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
| | - V R Barrs
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China; Centre for Animal Health and Welfare, City University of Hong Kong, Kowloon Tong, Hong Kong Special Administrative Region of China
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Almendros A, Choi YR, Bęczkowski PM, Baiker K, Barrs VR, Beatty JA. Babesia gibsoni Infection in a Cat with Immune-Mediated Haemolytic Anaemia and Thrombocytopenia. Animals (Basel) 2023; 13:2128. [PMID: 37443927 DOI: 10.3390/ani13132128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Tick-borne haemoparasite Babesia gibsoni has been detected rarely in cats, in surveys of apparently healthy animals. In stored blood from a 6-year-old male-neutered domestic shorthair cat in Hong Kong, B. gibsoni DNA was detected retrospectively using PCR for Babesia spp. 18S rRNA and mitochondrial cytochrome B genes, followed by sequencing and basic local alignment search tool (BLAST) analysis. The cat presented with severe haemolytic anaemia and thrombocytopenia. The cat responded to supportive care and glucocorticoids and was clinically normal despite persistent subclinical thrombocytopenia until six months after presentation, when it succumbed to a fatal haemorrhagic episode. Necropsy revealed severe intestinal and pulmonary haemorrhage and hypocellular bone marrow with megakaryocytosis but no other causes of immune-mediated thrombocytopenia (IMTP) or immune-mediated haemolytic anaemia (IMHA). Blood stored on days 158 and 180 tested PCR negative for Babesia spp. This report demonstrates that geographic range of B. gibsoni detection in cats includes Hong Kong. The exclusion of other causes suggests that B. gibsoni might have potentially played a role in triggering immune-mediated disease in this case.
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Affiliation(s)
- Angel Almendros
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - Y R Choi
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - Paweł M Bęczkowski
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - Kerstin Baiker
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - Vanessa R Barrs
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
| | - Julia A Beatty
- Department of Veterinary Clinical Sciences, Jockey Club College of Veterinary Medicine, City University of Hong Kong, Hong Kong SAR, China
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Lee J, Choi YR, Kim M, Park JM, Kang M, Oh J, Lee CJ, Park S, Kang SM, Manabe I, Ann SJ, Lee SH. Erratum to: Common and differential effects of docosahexaenoic acid and eicosapentaenoic acid on helper T-cell responses and associated pathways. BMB Rep 2021. [PMID: 34433511 PMCID: PMC8411040 DOI: 10.5483/bmbrep.2021.54.8.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Jaeho Lee
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Yu Ri Choi
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Miso Kim
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Jung Mi Park
- Department of Biostatistics and Computing, Graduate School of Yonsei University, Seoul 03722, Korea
| | - Moonjong Kang
- Department of Biostatistics and Computing, Graduate School of Yonsei University, Seoul 03722, Korea
| | - Jaewon Oh
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Chan Joo Lee
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sungha Park
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Seok-Min Kang
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Ichiro Manabe
- Department of Disease Biology and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Soo-jin Ann
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sang-Hak Lee
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
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Kim YJ, Koh EM, Song CH, Byun MS, Choi YR, Jeon EJ, Hwang K, Kim SK, Yang SI, Jung KJ. Preclinical immunogenicity testing using anti-drug antibody analysis of GX-G3, Fc-fused recombinant human granulocyte colony-stimulating factor, in rat and monkey models. Sci Rep 2021; 11:12004. [PMID: 34099775 PMCID: PMC8184775 DOI: 10.1038/s41598-021-91360-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 05/23/2021] [Indexed: 12/02/2022] Open
Abstract
Human granulocyte colony-stimulating factor (G-CSF, this study used Fc-fused recombinant G-CSF; GX-G3) is an important glycoprotein that stimulates the proliferation of granulocytes and white blood cells. Thus, G-CSF treatment has been considered as a crucial regimen to accelerate recovery from chemotherapy-induced neutropenia in cancer patients suffering from non-myeloid malignancy or acute myeloid leukemia. Despite the therapeutic advantages of G-CSF treatment, an assessment of its immunogenicity must be performed to determine whether the production of anti-G-CSF antibodies causes immune-related disorders. We optimized and validated analytical tools by adopting validation parameters for immunogenicity assessment. Using these validated tools, we analyzed serum samples from rats and monkeys injected subcutaneously with GX-G3 (1, 3 or 10 mg/kg once a week for 4 weeks followed by a 4-week recovery period) to determine immunogenicity response and toxicokinetic parameters with serum concentration of GX-G3. Several rats and monkeys were determined to be positive for anti-GX-G3 antibodies. Moreover, the immunogenicity response of GX-G3 was lower in monkeys than in rats, which was relevant to show less inhibition of toxicokinetic profiles in monkeys, at least 1 mg/kg administrated group, compared to rats. These results suggested the establishment and validation for analyzing anti-GX-G3 antibodies and measurement of serum levels of GX-G3 and anti-GX-G3 antibodies, which was related with toxicokinetic profiles. Taken together, this study provides immunogenicity assessment which is closely implicated with toxicokinetic study of GX-G3 in 4-week repeated administrated toxicological studies.
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Affiliation(s)
- Yun Jung Kim
- Genexine, Inc, Korea Bio Park, Seongnam, 13488, Republic of Korea
| | - Eun Mi Koh
- Bioanalytical and Immunoanalytical Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Chi Hun Song
- Bioanalytical and Immunoanalytical Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea.,College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34131, Republic of Korea
| | - Mi Sun Byun
- Genexine, Inc, Korea Bio Park, Seongnam, 13488, Republic of Korea
| | - Yu Ri Choi
- Genexine, Inc, Korea Bio Park, Seongnam, 13488, Republic of Korea
| | - Eun-Jeong Jeon
- Bioanalytical and Immunoanalytical Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea
| | - Kyunghwa Hwang
- Jeonbuk Analytical Research Group, In Vivo Hazard Evaluation and Research Division, Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Jeollabuk-do, 56212, Republic of Korea
| | - Sang Kyum Kim
- College of Pharmacy, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34131, Republic of Korea.
| | - Sang In Yang
- Genexine, Inc, Korea Bio Park, Seongnam, 13488, Republic of Korea.
| | - Kyung Jin Jung
- Bioanalytical and Immunoanalytical Research Group, Department of Advanced Toxicology Research, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, Republic of Korea.
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Lee J, Choi YR, Kim M, Park JM, Kang M, Oh J, Lee CJ, Park S, Kang SM, Manabe I, Ann SJ, Lee SH. Common and differential effects of docosahexaenoic acid and eicosapentaenoic acid on helper T-cell responses and associated pathways. BMB Rep 2021. [PMID: 33972011 PMCID: PMC8167247 DOI: 10.5483/bmbrep.2021.54.5.267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Jaeho Lee
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Yu Ri Choi
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Miso Kim
- Graduate Program of Science for Aging, Yonsei University, Seoul 03722, Korea
| | - Jung Mi Park
- Department of Biostatistics and Computing, Graduate School of Yonsei University, Seoul 03722, Korea
| | - Moonjong Kang
- Department of Biostatistics and Computing, Graduate School of Yonsei University, Seoul 03722, Korea
| | - Jaewon Oh
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Chan Joo Lee
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sungha Park
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Seok-Min Kang
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Ichiro Manabe
- Department of Disease Biology and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Soo-jin Ann
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sang-Hak Lee
- Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
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Lee S, Park JM, Ann SJ, Kang M, Cheon EJ, An DB, Choi YR, Lee CJ, Oh J, Park S, Kang SM, Lee SH. Cholesterol Efflux and Collateral Circulation in Chronic Total Coronary Occlusion: Effect-Circ Study. J Am Heart Assoc 2021; 10:e019060. [PMID: 33634702 PMCID: PMC8174259 DOI: 10.1161/jaha.120.019060] [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] [Indexed: 11/16/2022]
Abstract
Background The mechanism through which high‐density lipoprotein (HDL) induces cardioprotection is not completely understood. We evaluated the correlation between cholesterol efflux capacity (CEC), a functional parameter of HDL, and coronary collateral circulation (CCC). We additionally investigated whether A1BP (apoA1‐binding protein) concentration correlates with CEC and CCC. Methods and Results In this case‐control study, clinical and angiographic data were collected from 226 patients (mean age, 58 years; male, 72%) with chronic total coronary occlusion. CEC was assessed using a radioisotope and J774 cells, and human A1BP concentration was measured using enzyme‐linked immunosorbent assay. Differences between the good and poor CCC groups were compared, and associations between CEC, A1BP, and other variables were evaluated. Predictors of CCC were identified by multivariable logistic regression analysis. The CEC was higher in the good than in the poor CCC group (22.0±4.6% versus 20.2±4.7%; P=0.009). In multivariable analyses including age, sex, HDL‐cholesterol levels, age (odds ratio [OR], 0.96; P=0.003), and CEC (OR, 1.10; P=0.004) were identified as the independent predictors of good CCC. These relationships remained significant after additional adjustment for diabetes mellitus, acute coronary syndrome, and Gensini score. The A1BP levels were not significantly correlated with CCC (300 pg/mL and 283 pg/mL in the good CCC and poor CCC groups, respectively, P=0.25) or CEC. Conclusions The relationship between higher CEC and good CCC indicates that well‐functioning HDL may contribute to CCC and may be cardioprotective; this suggests that a specific function of HDL can have biological and clinical consequences.
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Affiliation(s)
- Seonhwa Lee
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Jung Mi Park
- Department of Biostatistics and Computing Graduate School Yonsei University Seoul Korea
| | - Soo-Jin Ann
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases Yonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Moonjong Kang
- Department of Biostatistics and Computing Graduate School Yonsei University Seoul Korea
| | - Eun Jeong Cheon
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases Yonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Dan Bi An
- Graduate Program of Science for Aging Graduate School Yonsei University Seoul Korea
| | - Yu Ri Choi
- Graduate Program of Science for Aging Graduate School Yonsei University Seoul Korea
| | - Chan Joo Lee
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Jaewon Oh
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Sungha Park
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Seok-Min Kang
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
| | - Sang-Hak Lee
- Division of Cardiology Department of Internal Medicine Severance HospitalYonsei University College of MedicineYonsei University Health System Seoul Korea
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Lee KH, Kim JS, Hong SH, Seong D, Choi YR, Ahn YT, Kim KS, Kim SE, Lee S, Sim W, Kim D, Jun B, Yang JW, Yon DK, Lee SW, Kim MS, Dragioti E, Li H, Jacob L, Koyanagi A, Abou Ghayda R, Shin JI, Smith L. Risk factors of COVID-19 mortality: a systematic review of current literature and lessons from recent retracted articles. Eur Rev Med Pharmacol Sci 2020; 24:13089-13097. [PMID: 33378062 DOI: 10.26355/eurrev_202012_24216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Recently, two influential articles that reported the association of (hydroxy)chloroquine or angiotensin converting enzyme (ACE) inhibitors and coronavirus disease 2019 (COVID-19) mortality were retracted due to significant methodological issues. Therefore, we aimed to analyze the same clinical issues through an improved research method and to find out the differences from the retracted papers. We systematically reviewed pre-existing literature, and compared the results with those of the retracted papers to gain a novel insight. MATERIALS AND METHODS We extracted common risk factors identified in two retracted papers, and conducted relevant publication search until June 26, 2020 in PubMed. Then, we analyzed the risk factors for COVID-19 mortality and compared them to those of the retracted papers. RESULTS Our systematic review demonstrated that most demographic and clinical risk factors for COVID-19 mortality were similar to those of the retracted papers. However, while the retracted paper indicated that both (hydroxy)chloroquine monotherapy and combination therapy with macrolide were associated with higher risk of mortality, our study showed that only combination therapy of hydroxychloroquine and macrolide was associated with higher risk of mortality (odds ratio 2.33; 95% confidence interval 1.63-3.34). In addition, our study demonstrated that use of ACE inhibitors or angiotensin receptor blockers (ARBs) was associated with reduced risk of mortality (0.77; 0.65-0.91). CONCLUSIONS When analyzing the same clinical issues with the two retracted papers through a systematic review of randomized controlled trials and relevant cohort studies, we found out that (hydroxy)chloroquine monotherapy was not associated with higher risk of mortality, and that the use of ACE inhibitors or ARBs was associated with reduced risk of mortality in COVID-19 patients.
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Affiliation(s)
- K H Lee
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Ku EJ, Cho KC, Lim C, Kang JW, Oh JW, Choi YR, Park JM, Han NY, Oh JJ, Oh TJ, Jang HC, Lee H, Kim KP, Choi SH. Discovery of plasma biomarkers for predicting the severity of coronary artery atherosclerosis by quantitative proteomics. BMJ Open Diabetes Res Care 2020; 8:8/1/e001152. [PMID: 32327445 PMCID: PMC7202779 DOI: 10.1136/bmjdrc-2019-001152] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/04/2020] [Accepted: 03/24/2020] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Cardiovascular disease (CVD) in patients with diabetes is the leading cause of death. Finding early biomarkers for detecting asymptomatic patients with CVD can improve survival. Recently, plasma proteomics-targeted selected reaction monitoring/multiple reaction monitoring analyses (MRM)-has emerged as highly specific and sensitive tools compared with classic ELISA methods. The objective was to identify differentially regulated proteins according to the severity of the coronary artery atherosclerosis. RESEARCH DESIGN AND METHODS A discovery cohort, a verification cohort and a validation cohort consisted of 18, 53, and 228 subjects, respectively. The grade of coronary artery stenosis was defined as a percentage of luminal stenosis of the major coronary arteries. Participants were divided into six groups, depending on the presence of diabetes and the grade of coronary artery stenosis. Two mass spectrometric approaches were employed: (1) conventional shotgun liquid chromatography tandem mass spectrometry for a discovery and (2) quantitative MRM for verification and validation. An analysis of the covariance was used to examine the biomarkers' predictivity beyond conventional cardiovascular risks. RESULTS A total of 1349 different proteins were identified from a discovery cohort. We selected 52 proteins based on the tandem mass tag quantitative analysis then summarized as follows: chemokine (C-X-C motif) ligand 7 (CXCL7), apolipoprotein C-II (APOC2), human lipopolysaccharide-binding protein (LBP) and dedicator of cytokinesis 2 (DOCK2) in diabetes; CXCL7, APOC2, LBP, complement 4A (C4A), vitamin D-binding protein (VTDB) and laminin β1 subunit in non-diabetes. Analysis of covariance showed that APOC2, DOCK2, CXCL7 and VTDB were upregulated and C4A was downregulated in patients with diabetes showing severe coronary artery stenosis. LBP and VTDB were downregulated in patients without diabetes, showing severe coronary artery stenosis. CONCLUSION We identified significant associations between circulating APOC2, C4A, CXCL7, DOCK2, LBP and VTDB levels and the degree of coronary artery stenosis using the MRM technique.
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Affiliation(s)
- Eu Jeong Ku
- Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
- Internal Medicine, Chungbuk National University College of Medicine, Cheongju, South Korea
| | - Kyung-Cho Cho
- Applied Chemisty, Kyung Hee University College of Applied Sciences, Yongin, South Korea
| | - Cheong Lim
- Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
- Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Jeong Won Kang
- Applied Chemisty, Kyung Hee University College of Applied Sciences, Yongin, South Korea
| | - Jae Won Oh
- Applied Chemisty, Kyung Hee University College of Applied Sciences, Yongin, South Korea
| | - Yu Ri Choi
- Applied Chemisty, Kyung Hee University College of Applied Sciences, Yongin, South Korea
| | - Jong-Moon Park
- Pharmaceutics, Gachon University College of Pharmacy, Incheon, South Korea
| | - Na-Young Han
- Pharmaceutics, Gachon University College of Pharmacy, Incheon, South Korea
| | - Jong Jin Oh
- Urology, Seoul National University Bundang Hospital, Seongnam, South Korea
- Urology, Seoul National University College of Medicine, Seoul, South Korea
| | - Tae Jung Oh
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
- Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Hak Chul Jang
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
- Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Hookeun Lee
- Pharmaceutics, Gachon University College of Pharmacy, Incheon, South Korea
| | - Kwang Pyo Kim
- Applied Chemisty, Kyung Hee University College of Applied Sciences, Yongin, South Korea
| | - Sung Hee Choi
- Internal Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
- Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Choi YR, Kim KS, Bandu R, Kim H, Lee JE, Shin B, Cho YJ, Park JM, Lee H, Kim KP. Liquid Chromatography/Electrospray Ionization Tandem Mass Spectrometry‐based Structural Analysis of Deacylated Lipooligosaccharides From Escherichia coli. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.11993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yu Ri Choi
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient MaterialsKyung Hee University Yongin 17104 Republic of Korea
| | - Kwang Sung Kim
- R&D center, EyeGene Goyang 10551 Republic of Korea
- Department of Integrated Bioscience and BiotechnologySejong University Seoul 05006 Republic of Korea
| | - Raju Bandu
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient MaterialsKyung Hee University Yongin 17104 Republic of Korea
| | - Hyoseon Kim
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient MaterialsKyung Hee University Yongin 17104 Republic of Korea
| | - Jae Eun Lee
- R&D center, EyeGene Goyang 10551 Republic of Korea
| | | | - Yang Je Cho
- R&D center, EyeGene Goyang 10551 Republic of Korea
| | - Jong Moon Park
- College of PharmacyGachon University Incheon 21936 Republic of Korea
| | - Hookeun Lee
- College of PharmacyGachon University Incheon 21936 Republic of Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, Institute of Natural Science, Global Center for Pharmaceutical Ingredient MaterialsKyung Hee University Yongin 17104 Republic of Korea
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11
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Sim SY, Choi YR, Lee JH, Lim JM, Lee S, Kim KP, Kim JY, Lee SH, Kim M. Back Cover: In‐Depth Proteomic Analysis of Human Bronchoalveolar Lavage Fluid toward the Biomarker Discovery for Lung Cancers. Proteomics Clin Appl 2019. [DOI: 10.1002/prca.201970054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sim SY, Choi YR, Lee JH, Lim JM, Lee SE, Kim KP, Kim JY, Lee SH, Kim MS. In-Depth Proteomic Analysis of Human Bronchoalveolar Lavage Fluid toward the Biomarker Discovery for Lung Cancers. Proteomics Clin Appl 2019; 13:e1900028. [PMID: 31119868 DOI: 10.1002/prca.201900028] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/30/2019] [Indexed: 12/18/2022]
Abstract
PURPOSE Lung cancer is among the most common cancers. Bronchoalveolar lavage fluid (BALF) can be easily obtained from patients with lung cancers. The aim is to develop a novel proteomic method of the molecule-based sensitive detection of biomarkers from BALF. EXPERIMENTAL DESIGN BALF samples are collected from segmental bronchus of 14 patients with lung cancers from Kyung Hee University Hospital. First, BALF proteome is depleted using a depletion column, and then peptides are prepared from the enriched low abundant proteins and fractionated by high pH reverse phase liquid chromatography prior to LC-MS/MS. Data are available via ProteomeXchange with identifier PXD012645. RESULTS A novel method is developed for in-depth proteomic analysis of BALF by combining antibody-based depletion of high abundant proteins from BALF with high pH peptide fractionation. Peptides are analyzed on a high resolution Orbitrap Fusion mass spectrometer. MaxQuant search result in the identification of 4615 protein groups mapped to 4534 genes. CONCLUSIONS AND CLINICAL RELEVANCE It is found that the method outperformed conventional BALF proteomic methods and it is believed that this method will facilitate the biomarker research for lung cancer. In addition, it is shown that BALF will be a great source of biomarkers of lung diseases.
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Affiliation(s)
- Seo Young Sim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Yu Ri Choi
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Jun Hyung Lee
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea.,Department of New Biology, DGIST, Daegu, 42988, Republic of Korea
| | - Jae Min Lim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Seung-Eun Lee
- Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Kwang Pyo Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea.,Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Jin Young Kim
- Biomedical Omic Research Group, Korea Basic Science Institute, Ochang, 28119, Republic of Korea
| | - Seung Hyeun Lee
- Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, 02447, Republic of Korea
| | - Min-Sik Kim
- Department of Applied Chemistry, Global Center for Pharmaceutical Ingredient Materials, Institute of Natural Science, Kyung Hee University, Yongin, 17104, Republic of Korea.,Department of New Biology, DGIST, Daegu, 42988, Republic of Korea.,Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, 02447, Republic of Korea
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13
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Choi YR, Kim HJ, Ahn GY, Lee MJ, Park JR, Jun DR, Ryu TK, Park JW, Shin E, Choi SW. Fabrication of dihydroxyflavone-conjugated hyaluronic acid nanogels for targeted antitumoral effect. Colloids Surf B Biointerfaces 2018; 171:690-697. [DOI: 10.1016/j.colsurfb.2018.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/27/2018] [Accepted: 08/05/2018] [Indexed: 11/25/2022]
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14
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Ahn GY, Ryu TK, Choi YR, Park JR, Lee MJ, Choi SW. Fabrication and optimization of Nanodiamonds-composited poly(ε-caprolactone) fibrous matrices for potential regeneration of hard tissues. Biomater Res 2018; 22:16. [PMID: 29862039 PMCID: PMC5975567 DOI: 10.1186/s40824-018-0126-x] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/20/2018] [Indexed: 02/06/2023] Open
Abstract
Background Electrospun fibrous matrices are of great importance for tissue engineering and drug delivery device. However, relatively low mechanical strength of the fibrous matrix is one of the major disadvantages. NDs with a positive charge were selected to enhance the mechanical property of a composited fibrous matrix by inducing the intermolecular interaction between NDs and polymer chain. We prepared ND-composited poly (ε-caprolactone) (PCL) fibrous matrices by electrospinning and evaluated their performance in terms of mechanical strength and cell behaviors. Methods A predetermined amounts of NDs (0.5, 1, 2 and 3 wt%) were added into PCL solution in a mixture of chloroform and 2,2,2-trifluoroethanol (8:2). ND-composited PCL (ND/PCL) fibrous matrices were prepared by electrospinning method. The tensile properties of the ND/PCL fibrous matrices were analyzed by using a universal testing machine. Mouse calvaria-derived preosteoblast (MC3T3-E1) was used for cell proliferation, alkaline phosphatase (ALP) assay, and Alizarin Red S staining. Results The diameters of the fibrous matrices were adjusted to approximately 1.8 μm by changing process variables. The intermolecular interaction between NDs and PCL polymers resulted in the increased tensile strength and the favorable interfacial adhesion in the ND/PCL fibrous matrices. The ND/PCL fibrous matrix with 1 wt% of ND had the highest tensile strength among the samples and also improved proliferation and differentiation of MC3T3-E1 cells. Conclusions Compared to the other samples, the ND/PCL fibrous matrix with 1 wt% of ND concentration exhibited superior performances for MC3T3 cells. The ND/PCL fibrous matrix can be potentially used for bone and dental tissue engineering.
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Affiliation(s)
- Guk Young Ahn
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
| | - Tae-Kyung Ryu
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
| | - Yu Ri Choi
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
| | - Ju Ri Park
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
| | - Min Jeong Lee
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
| | - Sung-Wook Choi
- Department of Biotechnology, The Catholic University of Korea, 43 Jibong-ro, Wonmi-gu, Bucheon-si, Gyeonggi-do 420-743 Republic of Korea
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Kwon CH, Park HJ, Choi YR, Kim A, Kim HW, Choi JH, Hwang CS, Lee SJ, Choi CI, Jeon TY, Kim DH, Kim GH, Park DY. PSMB8 and PBK as potential gastric cancer subtype-specific biomarkers associated with prognosis. Oncotarget 2017; 7:21454-68. [PMID: 26894977 PMCID: PMC5008298 DOI: 10.18632/oncotarget.7411] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [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: 08/10/2015] [Accepted: 02/05/2016] [Indexed: 11/25/2022] Open
Abstract
Gastric adenocarcinoma is a common form of cancer associated with a poor prognosis. We analyzed microarray profiling data from 48 patients with gastric adenocarcinoma to characterize gastric cancer subtypes and identify biomarkers associated with prognosis. We identified two major subtypes of gastric adenocarcinoma differentially associated with overall survival (P = 0.025). Genes that were differentially expressed were identified using specific criteria (P < 0.001 and >1.5-fold); expression of 294 and 116 genes was enriched in good and poor prognosis subtypes, respectively. Genes related to translational elongation and cell cycle were upregulated in the poor prognosis group. Of these genes, upregulation of proteasome subunit beta type 8 PSMB8 and PDZ binding kinase PBK was confirmed by real-time reverse transcription-PCR analysis. PSMB8 or PBK knockdown had no effect on gastric cancer cell proliferation but suppressed cell migration and invasion, respectively. Furthermore, immunohistochemistry analysis of 385 gastric cancer patients revealed that increased nuclear expression of PSMB8 and PBK was correlated with depth of invasion, lymph node metastasis, and lower survival rates. Taken together, two gastric adenocarcinoma subtypes were predictive of prognosis. PSMB8 and PBK were predictive of gastric cancer prognosis and could be potential gastric cancer subtype-specific biomarkers.
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Affiliation(s)
- Chae Hwa Kwon
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Ji Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Yu Ri Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Ahrong Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Hye Won Kim
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Jin Hwa Choi
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Chung Su Hwang
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - So Jung Lee
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Chang In Choi
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Tae Yong Jeon
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Dae Hwan Kim
- Department of Surgery, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Gwang Ha Kim
- Department of Internal Medicine, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
| | - Do Youn Park
- Department of Pathology, Pusan National University Hospital and Pusan National University School of Medicine, and BioMedical Research Institute, Pusan National University Hospital, Seo-Gu, Busan, Korea
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16
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Zhao J, van Mierlo KMC, Gómez-Ramírez J, Kim H, Pilgrim CHC, Pessaux P, Rensen SS, van der Stok EP, Schaap FG, Soubrane O, Takamoto T, Viganò L, Winkens B, Dejong CHC, Olde Damink SWM, Martín Pérez E, Cho JY, Choi YR, Phillips W, Michael M, Panaro F, Chenard MP, Verhoef C, Grünhagen DJ, Vara J, Scatton O, Hashimoto T, Makuuchi M, De Rosa G, Ravarino N. Systematic review of the influence of chemotherapy-associated liver injury on outcome after partial hepatectomy for colorectal liver metastases. Br J Surg 2017; 104:990-1002. [PMID: 28542731 DOI: 10.1002/bjs.10572] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/07/2017] [Accepted: 03/29/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND The impact of chemotherapy-associated liver injury (CALI) on postoperative outcome in patients undergoing partial hepatectomy for colorectal liver metastases (CRLM) remains controversial. The objective of this study was to clarify the effect of CALI (sinusoidal dilatation (SD), steatosis and steatohepatitis) on postoperative morbidity and mortality by investigating a large data set from multiple international centres. METHODS PubMed and Embase were searched for studies published between 1 January 2004 and 31 December 2013 with keywords 'chemotherapy', 'liver resection', 'outcome' and 'colorectal metastases' to identify potential collaborating centres. Univariable and multivariable analyses were performed using binary logistic regression models, with results presented as odds ratios (ORs) with 95 per cent confidence intervals. RESULTS A consolidated database comprising 788 patients who underwent hepatectomy for CRLM in eight centres was obtained. In multivariable analyses, severe SD was associated with increased major morbidity (Dindo-Clavien grade III-V; OR 1·73, 95 per cent c.i. 1·02 to 2·95; P = 0·043). Severe steatosis was associated with decreased liver surgery-specific complications (OR 0·52, 95 per cent c.i. 0·27 to 1·00; P = 0·049), whereas steatohepatitis was linked to an increase in these complications (OR 2·08, 1·18 to 3·66; P = 0·012). Subgroup analysis showed that lobular inflammation was the sole component associated with increased overall morbidity (OR 2·22, 1·48 to 3·34; P = 0·001) and liver surgery-specific complications (OR 3·35, 2·11 to 5·32; P < 0·001). Finally, oxaliplatin treatment was linked to severe SD (OR 2·74, 1·67 to 4·49; P < 0·001). CONCLUSION An increase in postoperative major morbidity and liver surgery-specific complications was observed after partial hepatectomy in patients with severe SD and steatohepatitis. Postoperative liver failure occurred more often in patients with severe SD.
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Affiliation(s)
- J Zhao
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands
| | - K M C van Mierlo
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands
| | - J Gómez-Ramírez
- Hepatopancreaticobiliary Surgery Unit, Department of Surgery, Hospital Universitario de la Princesa, Madrid, Spain
| | - H Kim
- Department of Pathology, Seoul National University Bundang Hospital, Seoul National College of Medicine, Seongnam, Korea
| | - C H C Pilgrim
- Hepatopancreaticobiliary Service, Upper Gastrointestinal Surgery, The Alfred Hospital, and Division of Cancer Surgery, Peter MacCallum Cancer Centre, Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, Victoria, Australia
| | - P Pessaux
- Digestive Surgery and Transplantation, Hôpital de Hautepierre, University Hospital of Strasbourg, Strasbourg, France
| | - S S Rensen
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands
| | - E P van der Stok
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - F G Schaap
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands
| | - O Soubrane
- Department of Hepatobiliary Surgery and Liver Transplant, Beaujon Hospital, Assistance Publique - Hôpitaux de Paris, Université Denis Diderot, Paris, France
| | - T Takamoto
- Department of Hepatopancreaticobiliary Surgery, Japanese Red Cross Medical Centre, Tokyo, Japan
| | - L Viganò
- Division of Hepatobiliary and General Surgery, Humanitas Clinical and Research Centre, Humanitas University, Rozzano, Italy
| | - B Winkens
- Department of Methodology and Statistics, Maastricht University Medical Centre, and CAPHRI School for Public Health and Primary Care, Maastricht, The Netherlands
| | - C H C Dejong
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands.,GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - S W M Olde Damink
- Department of Surgery, Maastricht University Medical Centre and NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht, The Netherlands.,Department of Hepatopancreaticobiliary Surgery and Liver Transplantation, Institute for Liver and Digestive Health, Royal Free Hospital, University College London, London, UK
| | | | - E Martín Pérez
- Hepatopancreaticobiliary Surgery Unit, Department of Surgery, Hospital Universitario de la Princesa, Madrid, Spain
| | - J Y Cho
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National College of Medicine, Seongnam, Korea
| | - Y R Choi
- Department of Surgery, Seoul National University Bundang Hospital, Seoul National College of Medicine, Seongnam, Korea
| | - W Phillips
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, Victoria, Australia
| | - M Michael
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Department of Surgery, University of Melbourne, St Vincent's Hospital, Melbourne, Victoria, Australia
| | - F Panaro
- Digestive Surgery and Transplantation, Hôpital de Hautepierre, University Hospital of Strasbourg, University of Strasbourg, Strasbourg, France
| | - M-P Chenard
- Department of Pathology, Hôpital de Hautepierre, University hospital of Strasbourg, University of Strasbourg, Strasbourg, France
| | - C Verhoef
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - D J Grünhagen
- Department of Surgical Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - J Vara
- Digestive Tumours Unit, Institut Bergonié, Bordeaux, France
| | - O Scatton
- Department of Digestive and Hepatobiliary Surgery, La Pitié Hospital, Université Pierre et Maris Curie, Paris, France
| | - T Hashimoto
- Department of Hepatopancreaticobiliary Surgery, Japanese Red Cross Medical Centre, Tokyo, Japan
| | - M Makuuchi
- Department of Hepatopancreaticobiliary Surgery, Japanese Red Cross Medical Centre, Tokyo, Japan
| | - G De Rosa
- Department of Pathology, Mauriziano Umberto I Hospital, Turin, Italy
| | - N Ravarino
- Department of Pathology, Mauriziano Umberto I Hospital, Turin, Italy
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Kim H, Ahn SW, Hong SK, Yoon KC, Kim HS, Choi YR, Lee HW, Yi NJ, Lee KW, Suh KS. Survival benefit of liver resection for Barcelona Clinic Liver Cancer stage B hepatocellular carcinoma. Br J Surg 2017; 104:1045-1052. [DOI: 10.1002/bjs.10541] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/23/2017] [Accepted: 02/01/2017] [Indexed: 01/27/2023]
Abstract
Abstract
Background
Although transarterial chemoembolization is recommended as the standard treatment for Barcelona Clinic Liver Cancer stage B hepatocellular carcinoma (BCLC-B HCC), other treatments including liver resection have been used. This study aimed to determine the survival benefit of treatment strategies including resection for BCLC-B HCC compared with non-surgical treatments.
Methods
The nationwide multicentre database of the Korean Liver Cancer Association was reviewed. Patients with BCLC-B HCC who underwent liver resection as a first or second treatment within 2 years of diagnosis and patients who received non-surgical treatment were selected randomly. Survival outcomes of propensity score-matched groups were compared.
Results
Among 887 randomly selected patients with BCLC-B HCC, 83 underwent liver resection as first or second treatment and 597 had non-surgical treatment. After propensity score matching, the two groups were well balanced (80 patients in each group). Overall median survival in the resection group was better than that for patients receiving non-surgical treatment (50·9 versus 22·1 months respectively; P < 0·001). The 1-, 2-, 3- and 5-year overall survival rates in the resection group were 90, 88, 75 and 63 per cent, compared with 79, 48, 35 and 22 per cent in the no-surgery group (P < 0·001). In multivariable analysis, non-surgical treatment only (hazard ratio (HR) 3·35, 95 per cent c.i. 2·16 to 5·19; P < 0·001), albumin level below 3·5 g/dl (HR 1·96, 1·22 to 3·15; P = 0·005) and largest tumour size greater than 5·0 cm (HR 1·81, 1·20 to 2·75; P = 0·005) were independent predictors of worse overall survival.
Conclusion
Treatment strategies that include liver resection offer a survival benefit compared with non-surgical treatments for potentially resectable BCLC-B HCC.
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Affiliation(s)
- H Kim
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - S W Ahn
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - S K Hong
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - K C Yoon
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - H-S Kim
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - Y R Choi
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - H W Lee
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - N-J Yi
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - K-W Lee
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - K-S Suh
- Department of Surgery, Seoul National University College of Medicine 101, Daehak-ro, Jongno-gu, Seoul 03080, Korea
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Choi JH, Seo JD, Kim MJ, Choi BY, Choi YR, Cho BM, Kim JS, Choi KD. Vertigo and nystagmus in orthostatic hypotension. Eur J Neurol 2014; 22:648-55. [PMID: 25641037 DOI: 10.1111/ene.12622] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [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: 06/29/2014] [Accepted: 10/07/2014] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND PURPOSE Generalized cerebral ischaemia from cardiovascular dysfunction usually leads to presyncopal dizziness, but several studies reported a higher frequency of rotatory vertigo in cardiovascular patients. Whether generalized cerebral ischaemia due to cardiovascular disorders may produce objective vestibular dysfunction was investigated. METHODS Thirty-three patients with orthostatic dizziness/vertigo due to profound orthostatic hypotension and 30 controls were recruited. All participants underwent recording of eye movements during two orthostatic challenging tests: the Schellong and the squatting-standing tests. Most patients had neuroimaging, and patients with abnormal eye movements were subjected to follow-up evaluations. RESULTS Symptoms associated with orthostatic dizziness/vertigo included blurred vision, fainting and tinnitus. Ten (30%) of 33 patients developed rotatory vertigo and nystagmus during the Schellong (n = 5) or squatting-standing test (n = 5). Four of them showed pure downbeat nystagmus whilst five had downbeat and horizontal nystagmus with or without torsional component. Patients with orthostatic nystagmus had shorter duration of orthostatic intolerance than those without nystagmus (1.0 ± 1.6 vs. 11.0 ± 9.7 months, P < 0.001). In two patients, orthostatic nystagmus disappeared during follow-up despite the persistence of profound orthostatic hypotension. CONCLUSIONS Generalized cerebral ischaemia caused by orthostatic hypotension induces rotatory vertigo due to objective vestibular dysfunction. The presence of orthostatic vertigo and nystagmus has an association with the duration of orthostatic intolerance.
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Affiliation(s)
- J-H Choi
- Department of Neurology, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
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Choi JH, Kim HW, Choi KD, Kim MJ, Choi YR, Cho HJ, Sung SM, Kim HJ, Kim JS, Jung DS. Isolated vestibular syndrome in posterior circulation stroke: Frequency and involved structures. Neurol Clin Pract 2014; 4:410-418. [PMID: 29443249 DOI: 10.1212/cpj.0000000000000028] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Dizziness/vertigo is a common symptom of posterior circulation stroke and usually accompanies other neurologic symptoms and signs. Although strokes involving the brainstem or cerebellum may produce isolated vestibular syndrome (isolated vertigo or imbalance), the overall frequency and involved structures of isolated vestibular syndrome in the posterior circulation stroke remain uncertain. Isolated vestibular syndrome occurs in approximately 25% of the patients with posterior circulation stroke, and mostly involves the cerebellum, inferior or superior cerebellar peduncles, and caudal lateral or rostral dorsolateral medulla. The occasional negative neuroimaging in patients with acute isolated vascular vertigo highlights the importance of appropriate bedside evaluation in acute vestibular syndrome.
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Affiliation(s)
- Jae-Hwan Choi
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Hyun-Woo Kim
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Kwang-Dong Choi
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Min-Ji Kim
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Yu Ri Choi
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Han-Jin Cho
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Sang-Min Sung
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Hak-Jin Kim
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Ji-Soo Kim
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
| | - Dae-Soo Jung
- Department of Neurology (J-HC), Pusan National University Yangsan Hospital, Pusan National University School of Medicine and Biomedical Research Institute; Departments of Neurology (H-WK, K-DC, M-JK, YRC, H-JC, S-MS, D-SJ) and Radiology (H-JK), Pusan National University Hospital, Pusan National University School of Medicine and Biomedical Research Institute; and Department of Neurology (J-SK), Seoul National University College of Medicine, Seoul National University Bundang Hospital, South Korea
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Abstract
The purpose of this study was to compare the outcome and complications of endoscopic versus open release for the treatment of de Quervain's tenosynovitis. Patients with this condition were randomised to undergo either endoscopic (n = 27) or open release (n = 25). Visual Analogue Scale (VAS) pain and Disabilities of Arm, Shoulder, and Hand (DASH) scores were measured at 12 and 24 weeks after surgery. Scar satisfaction was measured using a VAS scale. The mean pain and DASH scores improved significantly at 12 weeks and 24 weeks (p < 0.001) in both groups. The scores were marginally lower in the endoscopic group compared to the open group at 12 weeks (p = 0.012 and p = 0.002, respectively); however, only the DASH score showed a clinically important difference. There were no differences between the groups at 24 weeks. The mean VAS scar satisfaction score was higher in the endoscopic group at 24 weeks (p < 0.001). Transient superficial radial nerve injury occurred in three patients in the endoscopic group compared with nine in the open release group (p = 0.033). We conclude that endoscopic release for de Quervain's tenosynovitis seems to provide earlier improvement after surgery, with fewer superficial radial nerve complications and greater scar satisfaction, when compared with open release.
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Affiliation(s)
- H J Kang
- Yonsei University College of Medicine, Department of Orthopaedic Surgery, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, South Korea
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Choi KJ, Lee HS, Yoon YS, Park SS, Kim JS, Jeong JJ, Choi YR. Distal metatarsal osteotomy for hallux varus following surgery for hallux valgus. ACTA ACUST UNITED AC 2011; 93:1079-83. [PMID: 21768632 DOI: 10.1302/0301-620x.93b8.26430] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We reviewed the outcome of distal chevron metatarsal osteotomy without tendon transfer in 19 consecutive patients (19 feet) with a hallux varus deformity following surgery for hallux valgus. All patients underwent distal chevron metatarsal osteotomy with medial displacement and a medial closing wedge osteotomy along with a medial capsular release. The mean hallux valgus angle improved from -11.6° pre-operatively to 4.7° postoperatively, the mean first-second intermetatarsal angle improved from -0.3° to 3.3° and the distal metatarsal articular angle from 9.5° to 2.3° and the first metatarsophalangeal joints became congruent post-operatively in all 19 feet. The mean relative length ratio of the metatarsus decreased from 1.01 to 0.99 and the mean American Orthopaedic Foot and Ankle Society score improved from 77 to 95 points. In two patients the hallux varus recurred. One was symptom-free but the other remained symptomatic after a repeat distal chevron osteotomy. There were no other complications. We consider that distal chevron metatarsal osteotomy with a medial wedge osteotomy and medial capsular release is a useful procedure for the correction of hallux varus after surgery for hallux valgus.
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Affiliation(s)
- K J Choi
- Choi Kyung Jin Orthopaedic Hospital, 369-26 Woobong Building 3F, Shindang-dong, Jung-gu, Seoul, Korea
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22
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Kim SH, Choi EM, Chang CH, Kim HK, Chung MH, Choi YR. Comparison of the effect-site concentrations of remifentanil for Streamlined Liner of the Pharynx Airway (SLIPA) versus laryngeal mask airway SoftSealTM insertion during target-controlled infusion of propofol. Anaesth Intensive Care 2011; 39:611-7. [PMID: 21823378 DOI: 10.1177/0310057x1103900412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study was designed to determine the optimal dose of remifentanil required for the successful insertion of Streamlined Liner of the Pharynx Airway (SLIPA) and to compare it to that required for laryngeal mask airway (LMA) insertion in patients receiving a propofol infusion at a standard effect-site concentration. Fifty-eight patients scheduled to undergo general anaesthesia were randomly assigned to either the SLIPA (n = 29) or LMA (n = 29) group. All patients were premedicated with midazolam 0.05 mg x kg(-1) and glycopyrrolate 0.004 mg x kg(-1) intramuscularly. After the administration of lignocaine 1 mg x kg(-1) intravenously, a propofol infusion was started at an effect-site concentration of 3.5 microg x ml(-1) with a remifentanil infusion without a neuromuscular blocking agent. The remifentanil dose was determined by the modified up-and-down method starting in each group at 4 ng x ml(-1). Six minutes after induction, the airway device was inserted. Airway device insertion was classified as 'success' or 'failure' based on patient response. From the isotonic regression analysis and bootstrap distribution, the EC50 of remifentanil for SLIPA and LMA were 0.93 ng x ml(-1) (95% confidence interval [CI] 0.81 to 1.50 ng x ml(-1) and 1.36 ng x ml(-1) (95% CI 1.19 to 2.06 ng x ml(-1)) respectively, and the EC95 for SLIPA and LMA insertions were 1.90 ng x ml(-1) (95% CI 1.39 to 1.95) and 2.43 ng x ml(-1) (95% CI 1.80 to 2.46 ng x ml(-1)) respectively. Using the 83% CIs from the bootstrap distribution, EC50 for SLIPA was significantly less than that of LMA (0.83 to 1.23 vs 1.26 to 2.00, respectively) (P < 0.05). These findings suggest that the insertion of SLIPA needs about a 32% lower depth of anaesthesia than LMA insertion.
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Affiliation(s)
- S H Kim
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
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23
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Han CH, Hyun YK, Choi YR, Sung NY, Park YS, Lee KS, Chung JH. Clinical Features of Hospitalized Adult Patients with Pneumonia in Novel Influenza A (H1N1) Infection. Tuberc Respir Dis (Seoul) 2010. [DOI: 10.4046/trd.2010.69.1.24] [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: 11/24/2022] Open
Affiliation(s)
- Chang Hoon Han
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Yu Kyung Hyun
- Department of Internal Medicine, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Yu Ri Choi
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Na Young Sung
- Medical Institute, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Yoon Seon Park
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Goyang, Korea
| | - Kkot Sil Lee
- Department of Internal Medicine, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
| | - Jae Ho Chung
- Department of Internal Medicine, Myongji Hospital, Kwandong University College of Medicine, Goyang, Korea
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Shin SY, Kim BK, Park BH, Park SC, Park JC, Soon MK, Lee SY, Im E, Jeon HH, Jung KS, Jeong JH, Choi YR, Kang KH, Choi YJ, Hong YK, Kim CJ. Localized Fibrosing Mediastinitis with Superior Vena Caval(SVC) Syndrome. Tuberc Respir Dis (Seoul) 2007. [DOI: 10.4046/trd.2007.63.4.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Sang Yun Shin
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Beom Kyung Kim
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Byung Hoon Park
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seon Cheol Park
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jun Chul Park
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Myoung Kyun Soon
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Yul Lee
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Eui Im
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Han Ho Jeon
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung Soo Jung
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Heon Jeong
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Yu Ri Choi
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
| | - Kyoung Hoon Kang
- Department of Thoracic surgery, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
| | - Yoon Jung Choi
- Department of Pathology, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
| | - Yong Kook Hong
- Department of Radiology, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
| | - Chong Ju Kim
- Department of Internal Medicine, National Health Insurance Corporation Ilsan Hospital, Koyang, Korea
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Kim NG, Choi YR, Baek MJ, Kim YH, Kang H, Kim NK, Min JS, Kim H. Frameshift mutations at coding mononucleotide repeats of the hRAD50 gene in gastrointestinal carcinomas with microsatellite instability. Cancer Res 2001; 61:36-8. [PMID: 11196187 PMCID: PMC3300545 DOI: 10.1186/bcr362] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2001] [Indexed: 11/25/2022]
Abstract
Microsatellite instability (MSI) and frameshift mutations in genes containing nucleotide repeats have been reported in a subset of colorectal and gastric carcinomas. This study describes the analysis of MSI-positive colorectal (39 cases) and gastric carcinomas (36 cases) for the presence of frameshift mutations of the six genes known to be involved in DNA repair and containing mononucleotide repeats in their coding region. Our mutational study of the 75 MSI-positive tumors revealed frequent mutations in hRAD50 (23 cases, 31%), BLM (16 cases, 21%), and hMSH6 (16 cases, 21%); rare mutations in BRCA1 (1 case, 1%) and ATM (3 cases, 4%); and no mutation in NBS1. In contrast, no frameshift mutation was found in 60 MSI-negative colorectal and gastric carcinomas. The mutation of hRAD50, a gene that is involved in the response to cellular DNA damage and forms a complex with hMRE11 and NBS1, has not been reported previously. Our results suggest that frameshift mutations of hRAD50, BLM, and hMSH6 are selected and play a role in the tumorigenesis of colorectal and gastric carcinomas with MSI. The MSI targeting of the hRAD50 and BLM genes represents an additional link between MSI and DNA repair because alteration of these genes could accelerate defective DNA repair.
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Affiliation(s)
- N G Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
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26
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Abstract
Activity-dependent changes of conduction velocity (CV) and conduction block in single A(delta) fibers of primary afferent neurons were characterized in a rat model of neuropathy (NP). Injured dorsal root (DR) fiber in NP rats exhibited profoundly greater decreases of CV following impulse activity than did DR fiber in normal rats. Activity-dependent conduction block was absent up to 100 Hz of activity rate in DR fiber of NP rats, but was present above 25 Hz in normal rats. Profiles of activity dependence in sciatic fibers were similar in both NP and normal rats. These results suggest that nerve injury may alter activity-dependent hypoexcitability of A(delta) DR fibers. Furthermore, this excitability change may be responsible for the elevated pain perception in neuropathy.
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Affiliation(s)
- C K Won
- Department of Pharmacology, College of Medicine, Korea University, Seoul
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27
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Abstract
Activity-dependent changes of the conduction latency of single A beta fibers of primary afferent neurons were characterized in both neuropathic (L4 and L6 ligated) and normal rats. Activity-dependent increases in conduction latency of dorsal root fibers in neuropathic rats were significantly stronger than those in normal rats. Different profiles of activity dependence were also observed between injured and adjacent intact dorsal root fibers of neuropathic rats. However, activity-dependent latency changes in sciatic nerves distal to the dorsal root ganglion were not different between neuropathic and normal rats. These results suggest that partial nerve injury induces activity-dependent excitability changes in the dorsal root fibers of neuropathic rat and that these changes may be responsible for the altered sensory processing such as those seen in allodynia.
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Affiliation(s)
- H C Shin
- Department of Physiology, College of Medicine, Chunchon Sacred Heart Hospital, Hallym University, Kangwondo, Korea
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28
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Bieber LL, Helmrath T, Dolanski EA, Belanger LL, Choi YR. Studies on the formation of phosphoenolpyruvate and citric acid cycle intermediates by neonatal piglet liver mitochondria. Biol Neonate 1980; 37:197-203. [PMID: 7362856 DOI: 10.1159/000241274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The capacity of mitochondria isolated from livers of 5-day-old piglets to convert pyruvate to phosphoenolpyruvate, malate and citrate has been investigated. These mitochondria have a large capacity to flux pyruvate through the pyruvate carboxylase reaction causing an accumulation of malate, citrate and phosphoenolpyruvate. As much as 70% of the pyruvate utilized during state 3 respiration can flux through the pyruvate carboxylase reaction. The data indicate that phosphoenolpyruvate from mitochondria can contribute a significant fraction of the carbon skeletons of pyruvate converted to glucose by piglet liver (estimated to be 30%).
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30
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Choi YR, Clarke PR, Bieber LL. Studies on the oxidation of isobutyrylcarnitine by beef and rat liver mitochondria. J Biol Chem 1979; 254:5580-3. [PMID: 447666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Mitochondria from beef liver oxidize isobutyrylcarnitine at approximately 50% the rate of succinate in the presence of rotenone. However, the oxidation rate of isobutyryl coenzyme A in the presence of l(-)-carnitine is very low and can be negligible in both rat and beef liver mitochondria. The limited stimulation of isobutyryl-CoA oxidation by l(-)-carnitine appears to be due to inhibition of isobutyrylcarnitine translocation rather than lack of formation of isobutyrylcarnitine. This conclusion is supported by the fact that: 1) isobutyrylcarnitine oxidation is inhibited by l(-)-carnitine; 2) some oxidation of isobutyryl-CoA is obtained when a low concentration (50 microM) of l(-)-carnitine is used; and 3) under conditions of high isobutyryl-coenzyme A and l(-)-carnitine concentrations (1 mM), isobutyryl-carnitine is produced in near theoretical amounts by these rat liver mitochondria. Other studies demonstrated that less than 25% of the carnitine isobutyryl transferase activity of beef liver mitochondria and rat liver mitochondria is located on the cytosol side of the acylcoenzyme A barrier of these mitochondria.
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31
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Choi YR, Fogle PJ, Bieber LL. The effect of long-term fasting on the branched chain acylcarnitines and branched chain carnitine acyltransferases. J Nutr 1979; 109:155-61. [PMID: 430209 DOI: 10.1093/jn/109.1.155] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The effect of fasting for 8 days on the levels of carnitine acyltransferases in heart, liver, liver mitochondria, skeletal muscle, skeletal muscle mitochondria, kidney, and testes in young adult male rats was determined. The specific activities of acetyl-, octanyl-, isobutyryl-, and isovaleryl-carnitine acyltransferase in mitochondria isolated from the livers of fasted animals were significantly higher than the levels of the transferases isolated from livers of fed animals. Similar results were obtained with the 500 x g supernatant fluids from liver. In contrast, the specific activities of carnitine acyltransferases of 500 x g supernatant fractions isolated from heart, skeletal muscle, kidney, and testes were the same for fed as fasted animals. The total carnitine content of liver, muscle, heart, and kidney was less in animals fasted for 8 days than in fed animals, but the amount/g of organ was higher in the animals fasted for 8 days. The amount of specific short-chain acylcarnitines in liver, muscle, and heart was determined for both fed and fasted animals. The amount of isobutyrylcarnitine and isovalerylcarnitine increased significantly in muscle from fasted animals. These data are consistent with the previous suggestion that carnitine may have a role in the metabolism of the branched-chain amino acids.
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Choi YR, Akera T. Membrane (Na+ + K+)-ATPase of canine brain, heart and kidney. Tissue-dependent differences in kinetic properties and the influence of purification procedures. Biochim Biophys Acta 1978; 508:313-27. [PMID: 147705 DOI: 10.1016/0005-2736(78)90334-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Effects of commonly used purification procedures on the yield and specific activity of (Na+ + K+)-ATPase (Mg2+-dependent, Na+ + K+-activated ATP phosphohydrolase, EC 3.6.1.3), the turnover number of the enzyme, and the kinetic parameters for the ATP-dependent ouabain-enzyme interaction were compared in canine brain, heart and kidney. Kinetic parameters were estimated using a graphical analysis of non-steady state kinetics. The protein recovery and the degree of increase in specific activity of (Na+ + K+)-ATPase and the ratio between (Na+ + K+)-ATPase and Mg2+-ATPase activities during the successive treatments with deoxycholate, sodium iodide and glycerol were dependent on the source of the enzyme. A method which yields highly active (Na+ + K+)-ATPase preparations from the cardiac tissue was not suitable for obtaining highly active enzyme preparations from other tissues. Apparent turnover numbers of the brain (Na+ + K+)-ATPase preparations were not significantly affected by the sodium iodide treatment, but markedly decreased by deoxycholate or glycerol treatments. Similar glycerol treatment, however, failed to affect the apparent turnover number of cardiac enzymes preparations. Cerebral and cardiac enzyme preparations obtained by deoxycholate, sodium iodide and glycerol treatments had lower affinity for ouabain than renal enzyme preparations, primarily due to higher dissociation rate constants for the ouabain.enzyme complex. This tissue-dependent difference in ouabain sensitivity seems to be an artifact of the purification procedure, since less purified cerebral or cardiac preparations had lower dissociation rate constants. Changes in apparent association rate constants were minimal during the purfication procedure. These results indicate that the presentyl used purification procedures may alter the properties of membrane (Na+ + K+)-ATPase and affect the interaction between cardiac glycosides and the enzyme. The effect of a given treatment depends on the source of the enzyme. For the in vitro studies involving purified (Na+ + K+)-ATPase preparations, the influence of the methods used to obtain the enzyme preparation should be carefully evaluated.
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Choi YR, Fogle PJ, Clarke PR, Bieber LL. Quantitation of water-soluble acylcarnitines and carnitine acyltransferases in rat tissues. J Biol Chem 1977; 252:7930-1. [PMID: 914851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The water-soluble acylcarnitines isolated from rat heart, skeletal muscle, liver, and testis have been characterized. The following acyl residues derived from the acylcarnitine fraction were found: acetyl, propionyl, isobutyryl, butyryl, alpha-methylbutyryl, isovaleryl, tiglyl, caproyl, beta-methylcrotonyl and methacrylyl. The amounts of these acylcarnitines in heart, liver, testis and skeletal muscle from fed rats were determined. Acetylcarnitine was the most abundant acylcarnitine; however, appreciable quantities of propionyl-, isobutyryl-, isovaleryl-, and tiglyl-carnitine were found. The levels of carnitine octanyltransferse, carnitine acetyltransferase and carnitine palmityltransferase activities were determined in several tissues. In addition, carnitine isovaleryltransferase and isobutyryltransferase activities were measured in heart, skeletal muscle, liver, testis and kidney. In all instances the specific activity of isobutyryltransferase was similar to the specific activity of acetyltransferase. The results are consistent with the proposal that carnitine is involved in the catabolism of branched-chain amino acids.
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Bieber LL, Choi YR. Isolation and identification of aliphatic short-chain acylcarnitines from beef heart: possible role for carnitine in branched-chain amino acid metabolism. Proc Natl Acad Sci U S A 1977; 74:2795-8. [PMID: 268629 PMCID: PMC431294 DOI: 10.1073/pnas.74.7.2795] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Aliphatic acylearnitines isolated from a water-soluble fraction of beef heart have been characterized by gas chromatography and mass spectrometry. The following acyl residues derived from the acylcarnitine fraction were unequivocally identified: acetyl, propionyl, isobutyryl, butyryl, alpha-methylbutyryl, valeryl, isovaleryl, tiglyl, and caproyl. beta-methylcrotonyl and methacrylyl were tentatively identified. This occurrence of considerable quantities of branched-chain acylcarnitines indicates a role for carnitine in branched-chain amino acid metabolism.
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36
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Abstract
The association and dissociation rate constants for the interaction of [3H]-ouabain with partially purified rat brain (Na+,K+)-ATPase (ATP phosphohydrolase, EC 3.6.1.3) in vitro were estimated from the time course of the [3H]-ouabain binding observed in the presence of Na+, Mg2+ and ATP by a polynomial approximation-curve-fitting technique. The reduction of the association rate constant by K+ was greater than its reduction of the dissociation rate constant. Thus, the affinity of Na+,K+)-ATPase for ouabain was reduced by K+. The binding-site concentration was unaffected by K+. Consistent with these findings, the addition of KCl to an incubation mixture at the time when [3H]-ouabain binding to (Na+,K+)ATPase is close to equilibrium, caused an immediate decrease in bound ouabain concentration, apparently shifting towards a new, lower equilibrium concentration. Dissociation rate constants which were estimated following the termination of the ouabain-binding reaction were different from those estimated with above methods and may not be useful in predicting the ligand effects on equilibrium of the ouabain-enzyme interaction.
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