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Thong LM, Choi H, Kwon OJ, Kim JH, Kim YB, Oh JW, Seo K, Yeom SC, Lee WJ, Park C. Systematic analysis of swine leukocyte antigen-DRB1 nucleotide polymorphisms using genomic DNA-based high-resolution genotyping and identification of new alleles. ACTA ACUST UNITED AC 2011; 77:572-83. [PMID: 21457149 DOI: 10.1111/j.1399-0039.2011.01662.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In an attempt to enable comprehensive high-resolution genotyping of the swine leukocyte antigen (SLA) gene, we performed a systemic analysis of nucleotide polymorphisms at introns 1 and 2 and exon 2 from diverse alleles of SLA-DRB1 and DRB1 pseudogenes. We amplified and cloned 16 partial sequences of SLA-DRB1 and DRB2 introns 1 and 2 from different alleles, and analyzed them together with sequences of four reported SLA-DRB pseudogenes, DRB2, 3, 4, and 5. The results showed the presence of extreme nucleotide variations within introns 1 and 2 of SLA-DRB-related genes including substitutions and deletions. On the basis of these results, we developed a comprehensive genotyping method for SLA-DRB1 by genomic polymerase chain reaction (PCR) and subsequent direct sequencing. A total of 415 animals were genotyped and 67 allelic combinations from 18 DRB1 alleles were identified. Among them, two alleles, SLA-DRB1*kn04 and *kn05, were previously unreported. SLA-DRB1 genotyping results from this study combined with those of SLA-DQB1 from our previous study presented 10 SLA class II haplotypes, three of which were previously unreported. Population analysis using seven different pig breeds showed differences in the allele frequency of SLA-DRB1 among breeds. Our results should benefit biological experiments requiring sequence-level genotyping results of SLA-DRB1 and further study of the complete genetic diversity of SLA-DRB1 using field samples.
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Kwon KA, Oh S, Kim S, Lee S, Han J, Choi H, Park K, Roh M, Kim H, Kwon H. Systemic inflammatory response in predicting survival in patients with operable colorectal cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
456 Background: Several inflammatory response materials could be biomarkers for prediction of prognosis of cancer patients; elevated C-reactive protein (CRP), increased white cell, neutrophil, platelet, and decreased albumin. The Glasgow Prognostic Score (GPS) combines circulating CRP and albumin level, the neutrophil/lymphocyte ratio (NLR), and the platelet/lymphocyte ratio (PLR) has been introduced for prognostic scoring system in colorectal cancer (CRC). Thus, in this study, we attempted to identify an more adequate prognostic model related with systemic inflammatory response for CRC. Methods: Between Mar 2005 and Dec 2008, 200 patients who underwent curative resection for colorectal cancer were enrolled in this study. Systemic inflammatory parameters (CRP, albumin, neutrophil, lymphocyte, and platelet count) were checked for making 3 scoring systems. Based on clinical survival data, we then compared PFS and OS with GPS, NLR, and PLR. Results: Male to female were 123:77. Median age of the patients was 64 years (range, 26-83 years). Median follow-up duration was 27.2 months (range 7.8-52.7 months). 36 patients were observed disease progression or death. 19 patients were passed away during follow-up duration. 3 year PFS and OS were 72% and 86%, respectively. Numbers of GPS 0,1, and 2 patients were 154 (77%), 44 (22%), and 2 (1%), respectively. Survival analysis according to GPS, PFS and OS could not be able to show the prognostic significance (P=0.313 and P=263). Cut-off value of NLR and PLR were determined 3 and 180 by ROC curve. Both of NLR and PLR were observed as a good prognostic biomarker of PFS and OS (P=0.009 and P<0.001 in PFS, P=0.006 and P=0.001 in OS). Conclusions: Although GPS, NLR, and PLR were introduced as prognostic scoring systems for operable CRC, PLR which is constructed of platelet/lymphocyte count may represent a useful prognostic index for the prediction of PFS and OS in operable CRC. No significant financial relationships to disclose.
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Lee S, Yoon S, Shin S, Choi H. Sorafenib versus cytotoxic chemotherapy for patients with advanced hepatocellular carcinoma: A retrospective, single-institution study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
339 Background: Prior to the sorafenib era, most of the advanced hepatocellular carcinoma (HCC) patients had to rely only on conventional cytotoxic chemotherapy. But the introduction of sorafenib in 2008 had given HCC patients additional option for their treatment. However, given that sorafenib has been a nonreimbursable drug under the Korea public health system, most of treatment strategy has largely been determined by patients' affordability of the drug rather than by difference in efficacy and toxicity of the two treatments. Therefore, we compared the efficacy and toxicity of the two treatments by observing HCC patients. Methods: From January 2002 to December 2009, 173 patients with unresectable HCC had been retrospectively analyzed. Among them, 44 (25.4%) had been treated with sorafenib and the remaining had received cytotoxic chemotherapy. We evaluated objective response rate (ORR), progression-free survival (PFS), overall survival (OS), and toxicity profiles. Results: The median OS of sorafenib group was 23.0 weeks (95% CI, 8.1-37.9) vs. 43.6 weeks (95% CI, 34.0-37.9) for cytotoxic chemotherapy group. The median PFS for sorafenib group was 11.1 weeks (95% CI, 6.5-15.8) versus 12.4 weeks (95% CI, 8.1-16.7) for cytotoxic chemotherapy group. However, the difference in both findings had not been statistically significant (p=0.105 and p=0.496, respectively). ORR and DCR for sorafenib group were 2.3% and 52.3% versus 6.2% and 43.4% for cytotoxic chemotherapy group, respectively. Patients treated with chemotherapy had shown higher frequencies of grade 3 or 4 neutropenia, 19.7%, (vs. 0% for sorafenib). However, the group with sorafenib had reported a higher rate of all grade dermatologic toxicities such as hand-foot skin reaction, rash and pruritus. Conclusions: Our analysis indicates that efficacy of conventional chemotherapy is not inferior to that of sorafenib. Further research including novel target agent and cytotoxic chemotherapy is needed to improve clinical outcomes for advanced HCC. No significant financial relationships to disclose.
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Nguyen DT, Choi H, Jo H, Kim JH, Dirisala VR, Lee KT, Kim TH, Park KK, Seo K, Park C. Molecular characterization of the human ABO blood group orthologus system in pigs. Anim Genet 2011; 42:325-8. [PMID: 21554350 DOI: 10.1111/j.1365-2052.2010.02152.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The selection and use of animals with blood group 0 in the process of transplanting pig organs or tissues into humans can positively contribute to the control of acute immune rejection due to differences in blood groups. Exon-specific PCRs for the porcine blood group A transferase gene against genomic DNA from either blood group A or 0 animals resulted in the amplification failure of the A0 blood group gene exon 8 from blood group 0 animals. To characterize the genetic abnormality in the genome of blood group 0 animals, we screened bacterial artificial chromosome (BAC) clones from a Korean native pig BAC library which had the blood group 0 allele, and carried out shotgun sequencing. The analysis showed that the 0 allele has a large deletion between exon 7 of the A0 blood group gene and the neighbouring SURF6. We also showed that the ABO blood group antigens in humans and the A0 blood group antigens in pigs are coded by mutations within the orthologous glycosyltransferase gene. In addition, we developed a multiplex genotyping method for the porcine A0 blood group gene.
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Choi H, Takahashi D, Kono K, Kim E. Evidence of Supersolidity in Rotating Solid Helium. Science 2010; 330:1512-5. [DOI: 10.1126/science.1196409] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Kim SM, Baek JH, Kim YS, Sung JY, Lim HK, Choi H, Lee JH. Efficacy and safety of ethanol ablation for thyroglossal duct cysts. AJNR Am J Neuroradiol 2010; 32:306-9. [PMID: 21087937 DOI: 10.3174/ajnr.a2296] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE TGDC is a common congenital neck lesion, which has been treated by surgery. Although surgery is curative, it has drawbacks such as scars and surgical morbidity. Therefore, we applied EA as an alternative treatment technique. The purpose of this study was the evaluation of the efficacy and safety of EA for TGDC. MATERIALS AND METHODS Between May 2005 and July 2008, we performed EA in 11 patients with TGDC who refused surgery. All patients were confirmed as having benign lesions before treatment. US-guided aspiration of the cystic fluid was followed by injection of absolute ethanol (99%). The injected volume of ethanol was 50%-80% of the volume of fluid aspirated. We evaluated the therapeutic outcome, including volume reduction of the TGDC, improvement of cosmetic problems and symptoms, and complications. RESULTS The initial volume of the cysts ranged from 0.67 to 29.39 mL (mean, 6.0 mL). The procedure was performed in 1-3 sessions (mean, 1.4 sessions). Follow-up US was performed in 10 patients from 3 to 29 months (mean, 13.6 months). The mean volume of the cyst was 6.0 ± 8.4 mL, and volume reduction was 43.9%-100% (mean, 81.3%, P = .005) at last follow-up. Therapeutic success (volume reduction of >50%) was observed in 8 patients (8/10, 80%). Significant improvement of symptom- (P = .005) and cosmetic-grading scores (P = .003) was observed at last follow-up. No significant complications were observed during the procedure or follow-up periods. CONCLUSIONS EA seems to be an effective and safe treatment method for TGDC.
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Lee E, Park D, Choi H. Experimental determination of subcriticality at subcritical PWRs in Korea. ANN NUCL ENERGY 2010. [DOI: 10.1016/j.anucene.2010.06.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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258
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Choi H, Watanabe T. Learning with attention eliminates attentional blink on a long-term basis. J Vis 2010. [DOI: 10.1167/9.8.856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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259
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Moon H, Kim J, Park S, Kim Y, Park H, Choi H, Kim S, Choi B, Lee T. UP-2.40: Influence of overactive bladder on falls: study on females aged 40 and older in urban and rural communities. Urology 2010. [DOI: 10.1016/j.urology.2010.07.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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260
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Choi H, Watanabe T. Changes induced by attentional training - capacity increase vs. allocation changes. J Vis 2010. [DOI: 10.1167/10.7.1099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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261
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Katz D, Boonsirikamchai P, Benjamin RS, Patel S, Ludwig JA, Trent JC, Xiao L, Ravi V, Choi H, Araujo DM. Efficacy of neoadjuvant doxorubicin and ifosfamide (AI) in myxoid/round cell liposarcoma (MRCL): The M. D. Anderson Cancer Center experience (MDACC). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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262
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Kwon H, Kim S, Oh S, Lee S, Kwon K, Lee JH, Choi H, Park K, Roh M, Kim H. Clinicopathologic significance of p53, hypoxia-inducible factor 1 alfa, and vascular endothelial growth factor expression in colorectal cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.3609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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263
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Lee S, Choi H, Kim E, Choi H, Chung H, Chung KH. Estimation of the Measurement Uncertainty by the Bottom-Up Approach for the Determination of Methamphetamine and Amphetamine in Urine. J Anal Toxicol 2010; 34:222-8. [DOI: 10.1093/jat/34.4.222] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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264
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Newman G, Choi H, Wynn K, Scholl B. The Origins of causal perception: Evidence from postdictive processing in infancy. J Vis 2010. [DOI: 10.1167/7.9.917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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265
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Choi H, Scholl BJ. Effects of grouping and attention on the perception of causality. J Vis 2010. [DOI: 10.1167/3.9.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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266
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Choi H, Scholl BJ. Blindness to swapping features in simple dynamic events. J Vis 2010. [DOI: 10.1167/6.6.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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267
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Choi H, Scholl BJ. Can the perception of causality be measured with representational momentum? J Vis 2010. [DOI: 10.1167/5.8.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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268
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Shah L, Choi H, Krapp F, Zamudio C, Seas C, Ciampi A, Brewer T, Gotuzzo E. Predictors of primary multiple drug resistant tuberculosis (MDR-TB) transmission in Lima, Peru. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.1544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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269
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Han S, Chin B, Choi H, Shin S, Chae Y, Jin S, Baek JH, Kim C, Choi J, Song Y, Kim J. Predictive factors for the indeterminate result on the QuantiFERON-TB Gold In-Tube test. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.2163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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270
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Choi H, Chin B, Shin S, Jin S, Chae Y, Han S, Baek JH, Choi J, Kim C, Kim J. Clinical features of acute viral hepatitis A complicated with acute renal failure. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.1991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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271
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Choi H. Author's reply. West J Med 2010. [DOI: 10.1136/bmj.c452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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272
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273
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Kim M, Cho Y, Lee C, Ko J, Choi H, Kim B. Incidence and Severity of Complications Related to Intraoperative Spillage of Teratoma Contents during Laparoscopic Surgery: Ten Year's Experience. J Minim Invasive Gynecol 2009. [DOI: 10.1016/j.jmig.2009.08.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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274
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Choi K, Ryu SW, Song S, Choi H, Kang SW, Choi C. Caspase-dependent generation of reactive oxygen species in human astrocytoma cells contributes to resistance to TRAIL-mediated apoptosis. Cell Death Differ 2009; 17:833-45. [PMID: 19876066 DOI: 10.1038/cdd.2009.154] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL), a member of the TNF family of cytokines, causes apoptosis by caspase activation in various cell types, particularly in transformed cells. Numerous types of tumors are relatively resistant to TRAIL-induced cytotoxicity; however, the reasons for this are not yet fully understood. We report here a new signal transduction pathway involving protein kinase Cdelta (PKCdelta), NADPH oxidase 4 (NOX4) and reactive oxygen species (ROS), that inhibits caspase-dependent cell death induced by TRAIL ligation in human malignant astrocytoma cells. In our experiments, TRAIL ligation-induced generation of intracellular ROS through caspase-dependent proteolytic activation of PKCdelta and subsequent activation of the NOX4 complex. Suppression of intracellular ROS induction using various pharmacological inhibitors or PKCdelta- or NOX4-specific RNA interference enhanced the enzymatic activity of caspase-3 by blocking the oxidative modification of its catalytic cysteine residue, resulting in marked augmentation of TRAIL-mediated cell death. These results collectively indicate that TRAIL-induced activation of PKCdelta and NOX4 can modulate TRAIL-mediated apoptosis by promoting oxidative modification of active caspase-3 in a negative-feedback manner.
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Paick S, Lho Y, Baek M, Lee B, Kim H, Choi H. MP-12.10: The Effect of Orchiectomy on Contralateral Testicular Injury after Testicular Torsion in the Rat. Urology 2009. [DOI: 10.1016/j.urology.2009.07.897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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