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Cho S, Shin E, Park YG, Choi SH, Choe EK, Bae JH, Lee JE, Lee SD. A novel approach of kinship determination based on the physical length of genetically shared regions of chromosomes. Genes Genomics 2024; 46:577-587. [PMID: 38180716 PMCID: PMC11024047 DOI: 10.1007/s13258-023-01485-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/17/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND Determination of genetic relatedness between individuals plays a crucial role in resolving numerous civil cases involving familial relationships and in forensic investigation concerning missing persons. Short tandem repeats (STRs), known for their high degree of DNA polymorphism, have traditionally been the primary choice of DNA markers in genetic testing, but their application for kinships testing is limited to cases involving close kinship. SNPs have emerged as promising supplementary markers for kinship determination. Nevertheless, the challenging remains in discriminating between third-degree or more distant relatives, such as first cousins, using SNPs. OBJECTIVE To investigate a kinship analysis method for distant degree of familial relationships using high-density SNP data. METHODS A high-density SNP data from 337 individuals of Korean families using Affymetrix Axiom KORV1.0-96 Array was obtained for this study. SNPs were aligned by chromosomal positions, and identity-by-state (IBS) was determined, and then shared regions as consecutive SNPs with IBS of 1 or 2 were investigated. The physical lengths of these IBS segments were measured and summed them to create an Index, as a measure of kinship. RESULTS The kinship was determined by the physical length of shared chromosomal regions that are distinguished by each kinship. Using this method, the relationship was able be distinguished up to the fourth degree of kinship, and non-relatives were clearly distinguished from true relatives. We also found a potential for this approach to be used universally, regardless of microarray platforms for SNP genotyping and populations. CONCLUSION This method has a potential to determine the different degree of kinship between individuals and to distinguish non-relatives from true relatives, which can be of great help for practical applications in kinship determination.
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Kim BM, Park SU, Schmelzer L, Yang SB, Lee SD, Kim MY, Naue J, Lee HY. DNA methylation-based organ tissue identification: Marker identification, SNaPshot multiplex assay development, and interlaboratory comparison. Forensic Sci Int Genet 2024; 71:103052. [PMID: 38678764 DOI: 10.1016/j.fsigen.2024.103052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/19/2024] [Accepted: 04/20/2024] [Indexed: 05/01/2024]
Abstract
Identifying body fluids and organ tissues is highly significant as they can offer crucial evidence in criminal investigations and aid the court in making informed decisions, primarily through evaluating the biological source and possibly at the activity level up to death or fatal damage. In this study, organ tissue-specific CpG markers were identified from Illumina's methylation EPIC array data of nine organ tissues, including epidermis, dermis, heart, skeletal muscle, blood, kidney, brain, lung, and liver, from autopsies of 10 Koreans. Through the validation test using 43 samples, 18 hypomethylation markers, with two markers for each organ tissue type, were selected to construct a SNaPshot assay. Two multiplex assays involving forward and reverse SBE primers were designed to help investigators accurately determine the organ origin of the analyzed tissue samples through repeated analysis of the same PCR products for markers. The developed multiplex demonstrated high accuracy, achieving 100.0 % correct detection of the presence of nine organ tissue types in 88 samples from autopsies of 10 Asians. However, two lung samples showed additional positive indications of the presence of blood. An interlaboratory comparison using 80 autopsy samples (heart, skeletal muscle, blood, kidney cortex, kidney medulla, brain, lung, and liver) from 10 individuals in Germany revealed overall comparable results with correct detection of the presence of eight organ tissue types in 92.5 % samples (74 of 80 samples). In the case of six samples, it was impossible to determine the correct tissue successfully due to drop-outs of unmethylation signals at target tissue marker loci. One of these lung samples revealed only non-intended off-target signals for blood. The observed differences might be due to differences in sample collection during routine autopsy, technical differences due to the PCR cycler, and the threshold used for signal calling. Indicating the presence of additional tissue type and off-target unmethylation signals seems alleviated by applying more stringent hypomethylation thresholds. Therefore, the developed SNaPshot multiplex assays will be valuable for forensic investigators dealing with organ tissue identification, as well as for prosecutors and defense aiming to establish the circumstances that occurred at the crime scene.
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Lee JM, Park SU, Lee SD, Lee HY. Application of array-based age prediction models to post-mortem tissue samples. Forensic Sci Int Genet 2024; 68:102940. [PMID: 37857127 DOI: 10.1016/j.fsigen.2023.102940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/03/2023] [Accepted: 09/28/2023] [Indexed: 10/21/2023]
Abstract
Since DNA methylation at specific CpG sites exhibits a strong age association, researchers have developed numerous age prediction models based on the methylation BeadChip array. These models harness epigenetic clocks that hold the potential to narrow down the search range for unknown suspects and unidentified victims. This study collected 180 post-mortem tissue samples comprising nine tissue types (blood, brain, heart, lung, liver, kidney, muscle, epidermis, and dermis) from autopsies of 20 Koreans aged 18-78. Subsequently, DNA methylation profiling was conducted using the Infinium MethylationEPIC array. We tested several array-based age prediction models using the data obtained from various tissues. The pan-tissue clock exhibited a moderately accurate prediction across all nine tissue types (MAE = 8.7 years, r = 0.88). Notably, the DNAm ages of the Hannum clock, the skin & blood clock, and the Zhang clock strongly correlated with the actual age in blood samples (MAE < approximately 5 years, r > 0.9). PhenoAge yielded an MAE of 10.1 years and an r-value of 0.92. The muscle-specific epigenetic clock, the MEAT package, demonstrated high prediction accuracy in muscle samples (MAE = 4.7 years, r = 0.93). Those previously reported array-based age prediction models were mainly constructed in Europeans but performed well in Koreans. In addition, tests involving various quantities of DNA and fragmented DNA have shown that DNA quantity and quality affected methylation measurements and age prediction results. However, robust age prediction models exist under low amounts of DNA and fragmented DNA conditions.
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Kim MY, Kim H, Sung JA, Koh J, Cho S, Chung DH, Jeon YK, Lee SD. Whole Mitochondrial Genome Analysis in Non-Small Cell Lung Carcinoma Reveals Unique Tumor-Specific Somatic Mutations. Arch Pathol Lab Med 2023; 147:1268-1277. [PMID: 36602894 DOI: 10.5858/arpa.2022-0175-oa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2022] [Indexed: 01/06/2023]
Abstract
CONTEXT.— Mitochondria and mitochondrial DNA have been suggested to play a role in cancer initiation and progression. Knowledge of mitochondrial DNA could provide a breakthrough to advance cancer management. OBJECTIVE.— To identify the mitochondrial DNA landscape in non-small cell lung carcinoma. DESIGN.— The adenocarcinoma set consisted of 365 pairs of adenocarcinomas and normal lung tissues, whereas the metastasis set included 12 primary non-small cell carcinomas, 15 metastatic tumors, and their normal counterparts. Tumor-specific somatic variants were identified, and if a variant showed heteroplasmy, the proportion of minor alleles was evaluated. Variants with greater than 10% change in allele frequency between tumor and normal pairs were identified as "heteroplasmic shifts." RESULTS.— Tumor-specific variants appeared throughout the whole mitochondrial genome, without a common hot spot. Distinct variant profiles were seen in 289 (79.18%) of all individual adenocarcinomas. The presence of a unique profile and the number and loading of heteroplasmic shifts in tumors increased with higher stage or lymph node metastasis, and were related to shorter survival. In the metastasis set, the primary tumor variants were generally found in metastatic tumors. CONCLUSIONS.— This study shows that somatic mitochondrial DNA mutations present with diverse locations and unique profiles in each individual tumor, implying their clinicopathologic utility.
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Kim JY, Lee HY, Lee SY, Kim SY, Park JL, Lee SD. DNA methylome profiling of blood to identify individuals in a pair of monozygotic twins. Genes Genomics 2023; 45:1273-1279. [PMID: 37198375 PMCID: PMC10504115 DOI: 10.1007/s13258-023-01396-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/30/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Short tandem repeat (STR) markers cannot be used to distinguish between genetically identical monozygotic (MZ) twins, causing problems in a case with an MZ twin as a suspect. Many studies have shown that in older MZ twins, there are significant differences in overall content and genomic distribution of methylation. OBJECTIVE In this study, we analyzed the DNA methylome profile of blood to identify recurrent differentially methylated CpG sites (DMCs) to discriminate between MZ twins. METHODS Blood samples were collected from 47 paired MZ twins. We performed the DNA methylation profiling using the HumanMethylation EPIC BeadChip platform and identified recurrent DMCs between MZ twins. Then, Kyoto Encyclopedia of Genes and Genomes (KEGG), Gene Ontology (GO), and motif enrichment analyses were performed to reveal the biological functions of recurrent DMCs. We collected DNA methylome data from the Gene Expression Omnibus (GEO) public database to verify the recurrent DMCs between MZ twins. RESULTS We identified recurrent DMCs between MZ twin samples and observed that they were enriched in immune-related genes. In addition, we verified our DMCs in a public dataset. CONCLUSION Our results suggest that the methylation level at recurrent DMCs between MZ twins may serve as a valuable biomarker for identification of individuals in a pair of MZ twins.
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Lee SE, Kim GE, Kim H, Chung DH, Lee SD, Kim MY. Comparison of Two Variant Analysis Programs for Next-Generation Sequencing Data of Whole Mitochondrial Genome. J Korean Med Sci 2023; 38:e297. [PMID: 37698211 PMCID: PMC10497357 DOI: 10.3346/jkms.2023.38.e297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/29/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND With advance of next-generation sequencing (NGS) techniques, the need for mitochondrial DNA analysis is increasing not only in the forensic area, but also in medical fields. METHODS Two commercial programs, Converge Software (CS) and Torrent Variant Caller for variant calling of NGS data, were compared with a considerable amount of sequence data of 50 samples with a homogeneous ethnicity. RESULTS About 2,300 variants were identified and the two programs showed about 90% of consistency. CS, a dedicated analysis program for mitochondrial DNA, showed some advantages for forensic use. By additional visual inspection, several causes of discrepancy in variant calling results were identified. Application of different notation rules for mitochondrial sequence and the minor allele frequency close to detection threshold were the two most significant reasons. CONCLUSION With prospective improvement of each program, researchers and practitioners should be aware of characteristics of the analysis program they use and prepare their own strategies to determine variants.
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Go SM, Lee B, Ahn C, Jeong SH, Jo NR, Park SM, Lee M, Tran DN, Jung EM, Lee SD, Jeung EB. Initial phase establishment of an in vitro method for developmental neurotoxicity test using Ki-67 in human neural progenitor cells. JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY : AN OFFICIAL JOURNAL OF THE POLISH PHYSIOLOGICAL SOCIETY 2023; 74. [PMID: 37453095 DOI: 10.26402/jpp.2023.2.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 04/30/2023] [Indexed: 07/18/2023]
Abstract
Building a precise alternative neurotoxicological test is of great importance to respond to societal and ethical requirements. In this study, a new developmental neurotoxicity test (DNT) was established with the human neural progenitor cell line. ReNcell CX cells were exposed to neurotoxic chemicals (aphidicolin, hydroxyurea, cytosine arabinoside, 5-fluorouracil, and ochratoxin A) or non-neurotoxic chemicals (sodium gluconate, sodium bicarbonate, penicillin G, and saccharin). Propidium iodide (PI) was used to evaluate cell viability. BrdU and Ki-76 were employed to determine cell proliferation. Based on the cell viability and proliferation, mathematical models were built by linear discriminant analysis. Furthermore, the neurotoxic-considered chemicals inhibited cell cycle progression at the protein level, supporting the biomolecular rationale for the predictive model. Overall, these results show that the new test method can be used to determine the potential developmental neurotoxicants or new drug candidates.
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Oh CS, Kim MJ, Kim YS, Min S, Oh KT, Lee SD, Shin DH. Revealing Joseon period People's single nucleotide polymorphism associated with lactase gene by ancient DNA analysis of human remains from archaeological sites in Korea. Anat Cell Biol 2023; 56:54-60. [PMID: 36450657 PMCID: PMC9989794 DOI: 10.5115/acb.22.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022] Open
Abstract
Lactase non-persistence (LNP), one of the causes of lactose intolerance, is related to lactase gene associated single nucleotide polymorphisms (SNPs). Since the frequency of LNP varies by ethnic group and country, the research to reveal the presence or absence of LNP for specific people has been conducted worldwide. However, in East Asia, the study of lactase gene associated SNPs have not been sufficiently examined so far using ancient human specimens from archaeological sites. In our study of Joseon period human remains (n=14), we successfully revealed genetic information of lactase gene associated SNPs (rs1679771596, rs41525747, rs4988236, rs4988235, rs41380347, rs869051967, rs145946881 and rs182549), further confirming that as for eight SNPs, the pre-modern Korean people had a lactase non-persistent genotype. Our report contributes to the establishment of LNP associated SNP analysis technique that can be useful in forthcoming studies on human bones and mummy samples from East Asian archaeological sites.
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Nelson SW, Hardison RL, Limmer R, Marx J, Taylor BM, James RR, Stewart MJ, Lee SD, Calfee MW, Ryan SP, Howard MW. Efficacy of detergent-based cleaning and wiping against SARS-CoV-2 on high-touch surfaces. Lett Appl Microbiol 2023; 76:7076331. [PMID: 36906280 DOI: 10.1093/lambio/ovad033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 02/15/2023] [Accepted: 03/10/2023] [Indexed: 03/13/2023]
Abstract
Efficacy of cleaning methods against SARS-CoV-2 suspended in either 5% soil load (SARS-soil) or simulated saliva (SARS-SS) was evaluated immediately (hydrated virus, T0) or 2 hours post-contamination (dried virus, T2). Hard water dampened wiping (DW) of surfaces, resulted in 1.77-3.91 log reduction (T0) or 0.93-2.41 log reduction (T2). Incorporating surface pre-wetting by spraying with a detergent solution (D + DW) or hard water (W + DW) just prior to dampened wiping did not unilaterally increase efficacy against infectious SARS-CoV-2, however, the effect was nuanced with respect to surface, viral matrix, and time. Cleaning efficacy on porous surfaces (seat fabric, SF) was low. W + DW on stainless steel (SS) was as effective as D + DW for all conditions except SARS-soil at T2 on SS. DW was the only method that consistently resulted in > 3-log reduction of hydrated (T0) SARS-CoV-2 on SS and ABS plastic. These results suggest that wiping with a hard water dampened wipe can reduce infectious virus on hard non-porous surfaces. Pre-wetting surfaces with surfactants did not significantly increase efficacy for the conditions tested. Surface material, presence or absence of pre-wetting, and time post-contamination affect efficacy of cleaning methods.
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Kamp K, Li N, Lachance DM, Saad K, Tolentino E, Yoo L, Heitkemper MM, Clark-Snustad K, Lee SD, Dey N. Interpersonal Variability in Gut Microbial Calprotectin Metabolism. GASTRO HEP ADVANCES 2022; 1:853-856. [PMID: 36160305 PMCID: PMC9494624 DOI: 10.1016/j.gastha.2022.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hardison RL, Ryan SP, Limmer RA, Crouse M, Nelson SW, Barriga D, Ghere JM, Stewart MJ, Lee SD, Taylor BM, James RR, Calfee MW, Howard MW. Residual Antimicrobial Coating Efficacy Against SARS-CoV-2. J Appl Microbiol 2022; 132:3375-3386. [PMID: 34981882 DOI: 10.1111/jam.15437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 11/28/2022]
Abstract
AIMS This study evaluated the residual efficacy of commercially available antimicrobial coatings or films against SARS-CoV-2 on nonporous surfaces. METHOD AND RESULTS Products were applied to stainless steel or ABS plastic coupons and dried overnight. Coupons were inoculated with SARS-CoV-2 in the presence of 5% soil load. Recovered infectious SARS-CoV-2 was quantified by TCID50 assay. Tested product efficacies ranged from <1.0 to >3.0 log10 reduction at a 2-hour contact time. The log10 reduction in recovered infectious SARS-CoV-2 ranged from 0.44 to 3 log10 reduction on stainless steel and 0.25 to >1.67 log10 on ABS plastic. The most effective products tested contained varying concentrations (0.5 to 1.3%) of the same active ingredient: 3- (trihydroxysilyl) propyldimethyloctadecyl ammonium chloride. Products formulated with other quaternary ammonium compounds were less effective against SARS-CoV-2 in this test. CONCLUSIONS The residual antimicrobial products tested showed varied effectiveness against SARS-CoV-2 as a function of product tested. Several products were identified as efficacious against SARS-CoV-2 on both stainless steel and ABS plastic surfaces under the conditions evaluated. Differences in observed efficacy may be due to variation in active ingredient formulation; efficacy is, therefore, difficult to predict based upon listed active ingredient and its concentration. SIGNIFICANCE AND IMPACT This study highlights formulation-specific efficacy of several products against SARS-CoV-2 and may inform future development of residual antiviral products for use on nonporous surfaces. The identification of antimicrobial coatings or films showing promise to inactivate SARS-CoV-2 suggests that these products may be worth future testing and consideration.
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Lee SW, Lee SD, Kim MY. Incarcerated diaphragmatic hernia after right hepatectomy: an autopsy case with a review of 45 previous cases. Int J Legal Med 2021; 135:1549-1554. [PMID: 33735419 DOI: 10.1007/s00414-021-02557-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/02/2021] [Indexed: 11/28/2022]
Abstract
An iatrogenic diaphragmatic hernia after major hepatic resection is a rare complication. Incarceration of the abdominal organ through a diaphragmatic defect can have a fatal prognosis. Here, we report a case of incarcerated diaphragmatic hernia after right hepatectomy, which was diagnosed only after the autopsy. The deceased, who had right hepatectomy 1 year previously, complained of severe chest pain, and 4 days later was found dead. Localized decomposition in his chest and abdomen suggested a late complication of the surgery because the location was consistent with the prior surgical area. In the autopsy, there was a small defect in his right diaphragm, resulting in the herniation and incarceration of the small intestine. Gross and microscopic findings of the herniated small intestine were consistent with ischemic enteritis. Different from our case, most of the previously reported cases showed a good prognosis after surgical repair, except one lethal one. Even though its overall incidence is very low, an incarcerated diaphragmatic hernia is one of the critical complications of major hepatic resection. The clinicians should warn the patients to avoid preventable morbidity and mortality. Reviewing this fatal complication would be also helpful for forensic pathologists and death investigators.
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Moon JM, Chun BJ, Cho YS, Kim JC, Koo YJ, Park KH, Lee SD, Ahn JS, Kim DK, Ryu SJ. Coagulopathy after snake envenomation in South Korea. Clin Toxicol (Phila) 2021; 59:905-912. [PMID: 33641566 DOI: 10.1080/15563650.2021.1884694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE This retrospective study investigated the nature and severity of venom-induced consumption coagulopathy (VICC) and determined the clotting factors involved in VICC in patients after envenomation by South Korea's snakes. Additionally, we studied the effectiveness of antivenom for the treatment of VICC after envenomation. METHODS Included patients were divided into three groups according to the severity of VICC (no VICC, partial VICC, and complete VICC). Data, including changes in coagulation parameters during hospitalization and clotting factors at presentation, were collected and analyzed. RESULTS One hundred nineteen patients who presented at our emergency department within 3 h after snake envenomation were included. VICC developed in 34 patients (27 patients with partial VICC and 7 patients with complete VICC). Two of 34 patients with VICC required blood transfusions. Five patients with complete VICC had an undetectable fibrinogen concentration at presentation. Three patients with complete VICC had an unmeasurable INR and aPTT within 24 h. The median times of the most extreme values were 10 h for INR, 12 h for aPTT, and 16 h for fibrinogen after presentation in the VICC group. The D-dimer concentration peaked at a median of 63.5 h after presentation. The activities of factors II and X were significantly reduced in the complete VICC group (factor II: 88 (84-99.3)% in the non-VICC group vs. 69 (49.5-83.5)% in the complete VICC group; factor X:94 (83-102) in the non-VICC group vs. 70 (66.5-79.8)% in the complete VICC group), while there was no difference in factor V activity at presentation. The time from bite to first antivenom administration did not correlate with the time course and most extreme concentrations for fibrinogen and D-dimer within the VICC groups. DISCUSSION AND CONCLUSION VICC occurs in approximately one-quarter of snakebite patients in South Korea; however, VICC itself does not appear to lead to clinical deterioration. Fibrinogen is an early diagnostic maker for complete VICC. Clotting factors II and X are involved in VICC. Future investigations should explore the mechanism of VICC from Korean snakebites and the effect of antivenom on VICC.
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Jung YM, Lee SM, Oh S, Lyoo SH, Park CW, Lee SD, Park JS, Jun JK. The concordance rate of non-chromosomal congenital malformations in twins based on zygosity: a retrospective cohort study. BJOG 2020; 128:857-864. [PMID: 32783284 DOI: 10.1111/1471-0528.16463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To examine the concordance rate of non-chromosomal congenital malformations in twin pairs based on zygosity. DESIGN Retrospective cohort study. SETTING A tertiary hospital in Korea. POPULATION Twin pairs born at Seoul National University Hospital between 2001 and 2019. METHODS Congenital malformations were diagnosed by postnatal workups of neonates or autopsy in cases of stillborn infants. Zygosity was confirmed by sex, chorionicity and DNA analysis. MAIN OUTCOME MEASURES Concordance rate of congenital malformations in twin pairs based on zygosity. RESULTS In total, 3386 twin pairs were included. The risk of a congenital malformation in the index twin increased significantly if the co-twin had the congenital malformation, and the concordance rate was higher in monozygotic (MZ) than in dizygotic (DZ) twins (37.04 versus 16.77, P < 0.001). An increased risk of a congenital malformation in the presence of the same congenital malformation in the co-twin was observed only for malformations of the nervous system, eye/ear/face/neck, circulatory system, cleft lip/palate, genital organs, urinary system and musculoskeletal system. Significantly higher concordance rates in MZ than in DZ twin pairs were observed only for the nervous system (40.00 versus 0.00, P < 0.001), circulatory system (32.97 versus 19.74, P = 0.021), cleft lip/palate (44.44 versus 0.00, P = 0.017) and urinary system (22.22 versus 0.00, P = 0.004), whereas significant differences were not found for the genital organs or musculoskeletal system. CONCLUSIONS Monozygotic twins had higher concordance rates than DZ twins only in specific organ systems. It may be speculated that nervous system, circulatory system, cleft lip/palate and urinary system are primarily genetically affected. TWEETABLE ABSTRACT Monozygotic twins had higher concordance rates than dizygotic twins only in specific organ systems.
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Moon JM, Koo YJ, Chun BJ, Park KH, Cho YS, Kim JC, Lee SD, Min YR, Park HS. The effect of myocardial injury on the clinical course of snake envenomation in South Korea. Clin Toxicol (Phila) 2020; 59:286-295. [PMID: 32840397 DOI: 10.1080/15563650.2020.1802473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
CONTENT This study investigated the incidence, progression and clinical course of myocardial injury-related snake envenomation in South Korea. In addition, this study evaluated whether antivenom guidelines are appropriate to control envenomation in patients with myocardial injury. METHODS The study included 198 patients who received antivenom after a snakebite, and they were divided into two groups according to evidence of myocardial injury (defined as elevated troponin I or ischemic change on electrocardiogram) at presentation. Data including serial troponin I, echocardiogram/coronary angiogram findings, the clinical course, and treatment were collected and analyzed. RESULTS The incidence of myocardial injury at presentation was 15.2%. The troponin I level was 0.11 (0.07-0.56) ng/ml at presentation and tended to decrease over 24 h. Echocardiograms revealed neither regional wall motion abnormalities nor left ventricular dysfunction in 15 of 17 patients, while two patients showed signs of coronary artery stenosis on echocardiograms and coronary angiograms. However, compared with patients without myocardial injury, patients with myocardial injury had a higher frequency of systemic envenomation complications, including bleeding, respiratory failure, hypotension, acute kidney injury, thrombocytopenia and venom-induced consumption coagulopathy (VICC). The patients with myocardial injury at presentation needed significantly more frequent and larger doses of antivenom than indicated by the initial severity of envenomation. Multivariate analysis showed that myocardial injury was associated with the need for additional antivenom administration after initial administration. DISCUSSION AND CONCLUSION Myocardial injury is not uncommon after snake envenomation in Korea. Although myocardial injury itself seems to be benign, the clinical course of patients with myocardial injury is complicated, and myocardial injury is associated with the need for additional antivenom administration. The optimal use of antivenom to control envenomation in patents with myocardial injury after snake envenomation in South Korea should be established.
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Cho S, Shin KJ, Bae SJ, Kwon YL, Lee SD. Improved STR analysis of degraded DNA from human skeletal remains through in-house MPS-STR panel. Electrophoresis 2020; 41:1600-1605. [PMID: 32725901 DOI: 10.1002/elps.202000070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 07/06/2020] [Accepted: 07/24/2020] [Indexed: 11/09/2022]
Abstract
DNA analysis of degraded samples and low-copy number DNA derived from skeletal remains, one of the most challenging forensic tasks, is common in disaster victim identification and genetic analysis of historical materials. Massively parallel sequencing (MPS) is a useful technique for STR analysis that enables the sequencing of smaller amplicons compared with conventional capillary electrophoresis (CE), which is valuable for the analysis of degraded DNA. In this study, 92 samples of human skeletal remains (70+ years postmortem) were tested using an in-house MPS-STR system designed for the analysis of degraded DNA. Multiple intrinsic factors of DNA from skeletal remains that affect STR typing were assessed. The recovery of STR alleles was influenced more by DNA input amount for amplification rather than DNA degradation, which may be attributed from the high quantity and quality of libraries prepared for MPS run. In addition, the higher success rate of STR typing was achieved using the MPS-STR system compared with a commercial CE-STR system by providing smaller sized fragments for amplification. The results can provide constructive information for the analysis of degraded sample, and this MPS-STR system will contribute in forensic application with regard to skeletal remain sample investigation.
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Lee JH, Park SY, Ahn C, Yoo YM, Kim CW, Kim JE, Jo NR, Kang HY, Jung EM, Kim KS, Choi KC, Lee SD, Jeung EB. Second-phase validation study of an alternative developmental toxicity test using mouse embryonic stem cell-derived embryoid bodies. JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY 2020; 71. [PMID: 32633240 DOI: 10.26402/jpp.2020.2.06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 02/28/2020] [Indexed: 11/03/2022]
Abstract
The embryoid body test (EBT) is a developmental toxicity test method that measures the size of embryoid bodies (EBs) and the viability of mouse embryonic stem cells (mESCs) and fibroblasts (3T3 cells). The previous pre-validation study confirmed the high accuracy (above 80%) of EBT using 26 coded test chemicals. This second-phase validation study assessed the inter-laboratory reproducibility (5 chemicals in common) and predictive capacity (10 chemicals in each laboratory) test using the coded test chemicals at three laboratories. For the prediction model, the accuracy is increased when more data is accumulated. Therefore, we updated the prediction model and analyzed the results of the second year with the newly created-prediction model. Statistical analysis of the inter-laboratory reproducibility test results indicated that accuracy, sensitivity, and specificity were 87%, 78%, and 100%, respectively. The results of the statistical analysis of the predictive capacity test showed an accuracy of 80%, sensitivity of 78%, and specificity of 81%. In conclusion, the EBT can accurately classify various embryotoxicants within a short period and with relatively little effort. Therefore, EBT can be used as a good way to test developmental toxicity.
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Cho S, Kim MY, Lee JH, Lee HY, Lee SD. Large-scale identification of human bone remains via SNP microarray analysis with reference SNP database. Forensic Sci Int Genet 2020; 47:102293. [PMID: 32276230 DOI: 10.1016/j.fsigen.2020.102293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 03/10/2020] [Accepted: 03/20/2020] [Indexed: 10/24/2022]
Abstract
Single nucleotide polymorphisms (SNPs) are valuable markers complementary to conventional forensic short tandem repeat (STR) markers in genetic typing, with potential advantages in challenging forensic casework. With the advent of high-throughput technologies, such as microarrays and massively parallel sequencing, the use of SNP typing has now expanded to large-scale forensic applications. Herein, a forensic case is presented to demonstrate the usefulness of SNP typing in identifying large-scale human bone remains with reference database construction. A total of 402 bone remains were recovered from an island in the Jeju Province of Korea where a massive disaster occurred in 1948. The first phase of the identification process was accomplished via conventional DNA typing methods including autosomal and Y-chromosomal STR typing, and mitochondrial DNA sequencing, which resulted in the identification of 74 of 402 remains. The second phase of the identification involved the remaining 327 unidentified remains using SNP typing as a supplementary tool based on Affymetrix resequencing array. The SNP markers of 782 family members were also analyzed and a reference database was constructed for comparison. An additional 51 bone remains were identified in the second phase. SNP data obtained from the supplementary genotyping yielded additional genetic information as well as contributed to kinship testing to determine the second degrees of relationship. In addition SNPs are useful in discriminating ambiguous relationship when only STR data are available. A software program developed for SNP typing system enabled efficient kinship analysis for large-scale forensic identification. The results and the casework are described and discussed.
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Jeong SJ, Lee HJ, Lee SD, Lee SH, Park SJ, Kim JS, Lee JW. Classification of Common Relationships Based on Short Tandem Repeat Profiles Using Data Mining. ACTA ACUST UNITED AC 2019. [DOI: 10.7580/kjlm.2019.43.3.97] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kim MY, Cho S, Lee JH, Seo HJ, Lee SD. Detection of Innate and Artificial Mitochondrial DNA Heteroplasmy by Massively Parallel Sequencing: Considerations for Analysis. J Korean Med Sci 2018; 33:e337. [PMID: 30584415 PMCID: PMC6300661 DOI: 10.3346/jkms.2018.33.e337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 10/02/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Mitochondrial heteroplasmy, the co-existence of different mitochondrial polymorphisms within an individual, has various forensic and clinical implications. But there is still no guideline on the application of massively parallel sequencing (MPS) in heteroplasmy detection. We present here some critical issues that should be considered in heteroplasmy studies using MPS. METHODS Among five samples with known innate heteroplasmies, two pairs of mixture were generated for artificial heteroplasmies with target minor allele frequencies (MAFs) ranging from 50% to 1%. Each sample was amplified by two-amplicon method and sequenced by Ion Torrent system. The outcomes of two different analysis tools, Torrent Suite Variant Caller (TVC) and mtDNA-Server (mDS), were compared. RESULTS All the innate heteroplasmies were detected correctly by both analysis tools. Average MAFs of artificial heteroplasmies correlated well to the target values. The detection rates were almost 90% for high-level heteroplasmies, but decreased for low-level heteroplasmies. TVC generally showed lower detection rates than mDS, which seems to be due to their own computation algorithms which drop out some reference-dominant heteroplasmies. Meanwhile, mDS reported several unintended low-level heteroplasmies which were suggested as nuclear mitochondrial DNA sequences. The average coverage depth of each sample placed on the same chip showed considerable variation. The increase of coverage depth had no effect on the detection rates. CONCLUSION In addition to the general accuracy of the MPS application on detecting heteroplasmy, our study indicates that the understanding of the nature of mitochondrial DNA and analysis algorithm would be crucial for appropriate interpretation of MPS results.
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Moon JM, Chun BJ, Lee SD, Shin MH. The impact of hyperthermia after acute carbon monoxide poisoning on neurological sequelae. Hum Exp Toxicol 2018; 38:455-465. [PMID: 30545252 DOI: 10.1177/0960327118814151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study investigated whether hyperthermia within the first 24 h after presentation was associated with long-term neurological outcomes after acute carbon monoxide (CO) poisoning. This retrospective study included 200 patients with acute severe CO poisoning. Hyperthermia (≥ 37.5°C) developed during the first 24 h after presentation in 55 (27.5%) patients, and poor long-term neurological sequelae assessed at 23 months after acute CO poisoning developed in 19.5% of the patients. The incidence of poor long-term neurological outcomes was significantly higher in the hyperthermia group than in the normothermia group. Patients with poor long-term neurological outcomes had higher maximum temperatures than patients with good outcomes. No significant difference was found in the time of hyperthermia onset within the first day according to the neurological outcomes. Hyperthermia (adjusted odds ratio (aOR) 5.009 (95% confidence interval (CI) 1.556-16.126)) and maximum temperature (aOR 2.581 (95% CI 1.098-6.063)) within the first 24 h after presentation to the emergency department were independently associated with poor long-term neurological outcomes. Body temperature measurements, which are easily and noninvasively recorded at the bedside in any facility, help to predict the risk for poor long-term neurological outcomes. This study carefully emphasizes fastidious control of pyrexia, particularly during the early period after acute CO poisoning.
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Lee JH, Cho S, Kim MY, Shin DH, Rakha A, Shinde V, Lee SD. Genetic resolution of applied biosystems™ precision ID Ancestry panel for seven Asian populations. Leg Med (Tokyo) 2018; 34:41-47. [PMID: 30153533 DOI: 10.1016/j.legalmed.2018.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 07/23/2018] [Accepted: 08/22/2018] [Indexed: 10/28/2022]
Abstract
Massively parallel sequencing (MPS) offers additional information in cases that lack reference samples for comparison. The HID-Ion AmpliSeq Ancestry Panel is a forensic multiplex platform consisting of 165 autosomal markers designed to provide biogeographic ancestry information. We analyzed seven different population groups from Asia to assess the accuracy and reliability of analysis, using this panel. In this study, we have designated 750 unrelated Asians, from southern China (n = 99), Beijing (n = 100), Japan (n = 101), Korea (n = 100), Vietnam (n = 100), Nepal (n = 100), India (n = 51), and Pakistan (n = 99). The likelihood ratios of 750 Asians were calculated, using the Torrent Server and the HID SNP Genotyper Plugin Version 4.3.2. The results reveal that all Northeast Asians (China, Japan, and Korea), and Vietnamese, were predicted as East Asians with the highest ethnicity likelihood values from reference data. Although the samples from Nepal, India and Pakistan (Southwest Asians), were predominantly predicted as South Asians, there were seven cases of which results revealed as Europeans, with similar likelihood patterns. Population structure analysis indicated that Southwest Asians have a genetic profile that is distinguishable from those of other Asian populations. This panel was validated for potential usefulness in forensic analysis and the findings could be used as a basis for building additional Asian specific reference databases. Nevertheless, additional analyses comprising larger sample sizes will be necessary, especially Southeast Asians, to fully understand the Asian population structure, and to discriminate them with further details.
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Pośpiech E, Lee SD, Kukla-Bartoszek M, Karłowska-Pik J, Woźniak A, Boroń M, Zubańska M, Bronikowska A, Hong SR, Lee JH, Wojas-Pelc A, Lee HY, Spólnicka M, Branicki W. Variation in the RPTN gene may facilitate straight hair formation in Europeans and East Asians. J Dermatol Sci 2018; 91:331-334. [PMID: 29935789 DOI: 10.1016/j.jdermsci.2018.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/30/2018] [Accepted: 06/11/2018] [Indexed: 02/02/2023]
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Colombel JF, Sloan S, Gasink C, Gao L, Jacobstein D, Lee SD, Targan S. A147 RESPONSE AND REMISSION AFTER 16 WEEKS OF USTEKINUMAB– AN ALL PATIENTS ANALYSIS FROM THE UNITI CROHN’S STUDIES. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Shin DH, Oh CS, Hong JH, Lee H, Lee SD, Lee E. Helicobacter pylori DNA obtained from the stomach specimens of two 17 th century Korean mummies. Journal of Biological and Clinical Anthropology 2018; 75:75-87. [PMID: 29328350 DOI: 10.1127/anthranz/2018/0780] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/08/2017] [Accepted: 09/08/2017] [Indexed: 02/06/2023]
Abstract
ABSTRACT Helicobacter pylori is a bacterium that grows in the stomach mucosal epithelium, and can induce gastric diseases. Although many studies on modern H. pylori genomes have been reported from all over the world, a comprehensive picture of H. pylori is still lacking. Therefore, there is a pressing need to obtain archaeological specimens and to subject the ancient DNA (aDNA) extracted therefrom to analysis. Considering the typically excellent state of preservation of Joseon mummies discovered in Korea, we thus tried to isolate ancient H. pylori DNA from their mummified stomach specimens. After screening Korean mummy stomachs containing remnant H. pylori DNA, vacA (s- and m-region) alleles were successfully identified in the stomach isolates of two samples. The H. pylori strains identified had vacA s1/m2 (Cheongdo mummy) and s1 (Dangjin mummy) alleles. This paper is significant in that it is the first report of presumptive ancient H. pylori DNA obtained from East Asian archaeological specimens. However, full characterization and exploitation of ancient H. pylori DNA remnant in Joseon mummy specimens will require subsequent investigations utilizing the most cutting-edge techniques established for the analysis of ancient intestinal-content samples, such as next-generation sequencing (NGS).
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Kim MY, Lee SD. A proposal for writing a better death certificate. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2018. [DOI: 10.5124/jkma.2018.61.4.259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Cho S, Kim MY, Lee JH, Lee SD. Assessment of mitochondrial DNA heteroplasmy detected on commercial panel using MPS system with artificial mixture samples. Int J Legal Med 2017; 132:1049-1056. [PMID: 29279961 DOI: 10.1007/s00414-017-1755-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 11/30/2017] [Indexed: 01/05/2023]
Abstract
Mitochondrial DNA (mtDNA) heteroplasmy is a potential genetic marker for forensic mtDNA analysis as well as phylogenic studies. Frequency of mtDNA heteroplasmy has been investigated in different populations through massively parallel sequencing (MPS) analysis, revealing various levels of frequency based on different MPS systems. For accurate heteroplasmy identification, it is essential to explore reliable detection threshold on various MPS systems. In addition, software solutions and pipelines need to be evaluated to analyze data effectively. In this study, heteroplasmy analysis was conducted on a commercially available mtDNA analysis system developed for forensic caseworks with artificially mixed DNA samples known for ratios and variant positions for assessment. mtDNA heteroplasmy > 10% was detectable with Torrent Variant Caller (TVC) while lower levels were identified using GeneMarker® HTS specialized software for minor variant detection. This study implies that analytical parameters and tools need to be optimized and evaluated for low-level heteroplasmy identification. Automated system with simple and efficient workflow is needed for forensic caseworks.
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Moon JM, Chun BJ, Lee SD, Jung EJ. Serum neuron-specific enolase levels at presentation and long-term neurological sequelae after acute charcoal burning-induced carbon monoxide poisoning. Clin Toxicol (Phila) 2017; 56:751-758. [PMID: 29239210 DOI: 10.1080/15563650.2017.1415347] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE This study aimed to investigate whether clinical parameters and serum neuron-specific enolase (NSE) levels measured at emergency department (ED) presentation help stratify the risk of acute or delayed persistent severe neurological sequelae after acute carbon monoxide (CO) poisoning induced by charcoal burning. METHODS This retrospective study included 236 patients who suffered from CO poisoning. Demographic information, serum NSE levels measured in the ED, treatment, clinical course, and long-term neurological outcomes were recorded. RESULTS The median serum NSE level at presentation was 15.5 (10.9-22.7) ng/mL. No differences were observed in the duration of CO exposure; the initial Glasgow Coma Scale (GCS) score; the levels of arterial HCO3-, white blood cells (WBCs), C-reactive protein (CRP) or troponin I; or the frequency of abnormal diffusion-weighted imaging finding at presentation among the groups with different serum NSE levels at presentation. The incidences of acute and delayed persistent neurologic sequelae assessed at 22.3 months after acute charcoal CO poisoning were 5.1% and 8.5%, respectively. No difference in the NSE level was observed between patients stratified according to long-term neurological status. According to the multinomial logistic regression analysis, age, serum CRP levels and the initial GCS score were risk factors for the two types of persistent severe neurological sequelae, whereas troponin I levels were associated only with the acute persistent severe neurological sequelae. However, the adjusted NSE level was not a risk factor for any persistent neurological sequelae. CONCLUSIONS Serum NSE levels at presentation were not correlated with the risk of acute or delayed persistent neurological sequelae. Further studies with blood sampling at optimal time points and serial measurements should be conducted. Age, initial GCS score, and CRP levels may be risk factors for persistent severe neurological sequelae.
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Lee JH, Jin HX, Cho S, Kim HN, Seo HJ, Shin KJ, Shin DH, Lee SD. Y chromosomal deletion pattern in Koreans inhabiting Jeju Island. Journal of Biological and Clinical Anthropology 2017; 74:177-182. [PMID: 28555242 DOI: 10.1127/anthranz/2017/0669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 02/28/2017] [Accepted: 03/07/2017] [Indexed: 11/05/2022]
Abstract
ABSTRACT Mutations occur in Y chromosome genes similar to autosomal genes. However, unlike autosomal genes, Y chromosome genes do not undergo recombination, which produce distinctive characteristics and distribution patterns in different geographic regions. Therefore, detailed analysis of mutations of Y chromosome genes might provide information for personal identification or analysis of phylogenetic history. In Y-STR (short tandem repeat) analysis tests on 668 habitants of Jeju Island, the largest island in the Korean peninsula located apart from the mainland, a deletion at DYS448 was found in 10 samples. The length of deletion was estimated by confirming specific Sequence Tagged Site (STS) markers ranging from G66018 to sY1201. Patterns found were similar to those of the Kalmyks, a tribe that has had strong social and genetic influences in Jeju Island in the past. Historically from 1273 on, Jeju Island was governed by Mongolian for about one hundred years. The results of this study suggest such historical aspects affected the genetic composition of people living in Jeju Island. Furthermore, previous reports showed that Y chromosomal deletions and region specific Y chromosomal mutations depended on regional differences. This study may be useful for a better understanding of the genetic structure of Jeju habitants as well as Korean population for the purpose of forensic practice and population genetics.
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Shin DH, Oh CS, Hong JH, Kim Y, Lee SD, Lee E. Paleogenetic study on the 17th century Korean mummy with atherosclerotic cardiovascular disease. PLoS One 2017; 12:e0183098. [PMID: 28813480 PMCID: PMC5559090 DOI: 10.1371/journal.pone.0183098] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 06/27/2017] [Indexed: 12/20/2022] Open
Abstract
While atherosclerotic cardiovascular disease (ASCVD) is known to be common among modern people exposed to various risk factors, recent paleopathological studies have shown that it affected ancient populations much more frequently than expected. In 2010, we investigated a 17th century Korean female mummy with presumptive ASCVD signs. Although the resulting report was a rare and invaluable conjecture on the disease status of an ancient East Asian population, the diagnosis had been based only on anatomical and radiological techniques, and so could not confirm the existence of ASCVD in the mummy. In the present study, we thus performed a paleogenetic analysis to supplement the previous conventional diagnosis of ASCVD. In aDNA extracted from the same Korean mummy, we identified the risk alleles of seven different SNPs (rs5351, rs10757274, rs2383206, rs2383207, rs10757278, rs4380028 and rs1333049) that had already been revealed to be the major risk loci of ASCVD in East Asian populations. The reliability of this study could be enhanced by cross-validation using two different analyses: Sanger and SNaPshot techniques. We were able to establish that the 17th century Korean female had a strong genetic predisposition to increased risk of ASCVD. The current paleogenetic diagnosis, the first of its kind outside Europe, re-confirms its utility as an adjunct modality for confirmatory diagnosis of ancient ASCVD.
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Moon JM, Chun BJ, Lee SD. In-hospital outcomes and delayed neurologic sequelae of seizure-related endosulfan poisoning. Seizure 2017; 51:43-49. [PMID: 28787683 DOI: 10.1016/j.seizure.2017.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 05/22/2017] [Accepted: 07/19/2017] [Indexed: 11/18/2022] Open
Abstract
PURPOSE This study investigated the predictive factors for progression from seizure-related endosulfan poisoning to status epilepticus (SE) and refractory SE (RSE). This study also investigated delayed neurologic sequelae in seizure-related endosulfan poisoning. METHODS This retrospective, observational case series consisted of 73 patients who developed at least one seizure after endosulfan ingestion. RESULTS The progression rates from seizure-related endosulfan poisoning to SE and from SE-related endosulfan poisoning to RSE were 78.1% and 54.4%, respectively. The SE and RSE fatality rates were 19.2% and 41.9%, respectively. No patients reported the development of delayed neurological sequelae at least six months after discharge. Glasgow coma scale (GCS) score were identified as an independent factor for progression from seizure-related endosulfan poisoning to SE and from SE-related endosulfan poisoning to RSE. Lorazepam administration was independently associated with preventing progression from SE-related endosulfan poisoning to RSE. CONCLUSION Seizure-related endosulfan poisoning had higher progression rates to SE and RSE and higher fatality rates than other drug-induced seizures. However, delayed neurologic sequelae after discharge were not demonstrated. Due to the high progression rates from seizure-related endosulfan poisoning to SE and RSE and the absence of an established treatment for SE-related endosulfan poisoning, physicians should aggressively treat patients who experience a seizure after endosulfan poisoning and who present with decreased GCS score. Lorazepam should be considered a first-line anti-epileptic drug for controlling seizures in patients with endosulfan poisoning.
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Cho S, Jung SE, Hong SR, Lee EH, Lee JH, Lee SD, Lee HY. Independent validation of DNA-based approaches for age prediction in blood. Forensic Sci Int Genet 2017; 29:250-256. [PMID: 28511095 DOI: 10.1016/j.fsigen.2017.04.020] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/21/2017] [Accepted: 04/27/2017] [Indexed: 01/13/2023]
Abstract
Numerous molecular biomarkers have been proposed as predictors of chronological age. Among them, T-cell specific DNA rearrangement and DNA methylation markers have been introduced as forensic age predictors in blood because of their high prediction accuracy. These markers appear highly promising, but for better application to forensic casework sample analysis the proposed markers and genotyping methods must be tested further. In the current study, signal-joint T-cell receptor excision circles (sjTRECs) and DNA methylation markers located in the ELOVL2, C1orf132, TRIM59, KLF14, and FHL2 genes were reanalyzed in 100 Korean blood samples to test their associations with chronological age, using the same analysis platform used in previous reports. Our study replicated the age association test for sjTREC and DNA methylation markers in the 5 genes in an independent validation set of 100 Koreans, and proved that the age predictive performance of the previous models is relatively consistent across different population groups. However, the extent of age association at certain CpG loci was not identical in the Korean and Polish populations; therefore, several age predictive models were retrained with the data obtained here. All of the 3 models retrained with DNA methylation and/or sjTREC data have a CpG site each from the ELOVL2 and FHL2 genes in common, and produced better prediction accuracy than previously reported models. This is attributable to the fact that the retrained model better fits the existing data and that the calculated prediction accuracy could be higher when the training data and the test data are the same. However, it is notable that the combination of different types of markers, i.e., sjTREC and DNA methylation, improved prediction accuracy in the eldest group. Our study demonstrates the usefulness of the proposed markers and the genotyping method in an independent dataset, and suggests the possibility of combining different types of DNA markers to improve prediction accuracy.
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Park S, Cho S, Seo HJ, Lee JH, Kim MY, Lee SD. Entire Mitochondrial DNA Sequencing on Massively Parallel Sequencing for the Korean Population. J Korean Med Sci 2017; 32:587-592. [PMID: 28244283 PMCID: PMC5334155 DOI: 10.3346/jkms.2017.32.4.587] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/15/2017] [Indexed: 12/02/2022] Open
Abstract
Mitochondrial DNA (mtDNA) genome analysis has been a potent tool in forensic practice as well as in the understanding of human phylogeny in the maternal lineage. The traditional mtDNA analysis is focused on the control region, but the introduction of massive parallel sequencing (MPS) has made the typing of the entire mtDNA genome (mtGenome) more accessible for routine analysis. The complete mtDNA information can provide large amounts of novel genetic data for diverse populations as well as improved discrimination power for identification. The genetic diversity of the mtDNA sequence in different ethnic populations has been revealed through MPS analysis, but the Korean population not only has limited MPS data for the entire mtGenome, the existing data is mainly focused on the control region. In this study, the complete mtGenome data for 186 Koreans, obtained using Ion Torrent Personal Genome Machine (PGM) technology and retrieved from rather common mtDNA haplogroups based on the control region sequence, are described. The results showed that 24 haplogroups, determined with hypervariable regions only, branched into 47 subhaplogroups, and point heteroplasmy was more frequent in the coding regions. In addition, sequence variations in the coding regions observed in this study were compared with those presented in other reports on different populations, and there were similar features observed in the sequence variants for the predominant haplogroups among East Asian populations, such as Haplogroup D and macrohaplogroups M9, G, and D. This study is expected to be the trigger for the development of Korean specific mtGenome data followed by numerous future studies.
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Cho S, Seo HJ, Lee JH, Kim MY, Lee SD. Influence of immunologic status on age prediction using signal joint T cell receptor excision circles. Int J Legal Med 2017; 131:1061-1067. [DOI: 10.1007/s00414-017-1540-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
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Lee HY, Lee SD, Shin KJ. Forensic DNA methylation profiling from evidence material for investigative leads. BMB Rep 2017; 49:359-69. [PMID: 27099236 PMCID: PMC5032003 DOI: 10.5483/bmbrep.2016.49.7.070] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Indexed: 12/30/2022] Open
Abstract
DNA methylation is emerging as an attractive marker providing investigative leads to solve crimes in forensic genetics. The identification of body fluids that utilizes tissue-specific DNA methylation can contribute to solving crimes by predicting activity related to the evidence material. The age estimation based on DNA methylation is expected to reduce the number of potential suspects, when the DNA profile from the evidence does not match with any known person, including those stored in the forensic database. Moreover, the variation in DNA implicates environmental exposure, such as cigarette smoking and alcohol consumption, thereby suggesting the possibility to be used as a marker for predicting the lifestyle of potential suspect. In this review, we describe recent advances in our understanding of DNA methylation variations and the utility of DNA methylation as a forensic marker for advanced investigative leads from evidence materials. [BMB Reports 2016; 49(7): 359-369]
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Park HM, Han SS, Lee EC, Lee SD, Yoon HM, Eom BW, Kim SH, Ryu KW, Park SJ, Kim YW, Park B. Randomized clinical trial of preoperative skin antisepsis with chlorhexidine gluconate or povidone–iodine. Br J Surg 2016; 104:e145-e150. [DOI: 10.1002/bjs.10395] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/04/2016] [Accepted: 09/06/2016] [Indexed: 11/11/2022]
Abstract
Abstract
Background
Skin antiseptic agents are used to prevent surgical-site infection (SSI); few trials have reported the superiority of any specific agent in clean-contaminated abdominal surgery. This RCT was designed to compare the effectiveness of chlorhexidine gluconate and povidone–iodine.
Methods
Consecutive patients who underwent clean-contaminated upper gastrointestinal or hepatobiliary–pancreatic open surgery between 2011 and 2014 were assigned randomly to either chlorhexidine gluconate or povidone–iodine. The primary endpoint was the occurrence of SSI within 30 days of surgery. Secondary endpoints included causative organisms and risk factors for SSI.
Results
A total of 534 patients were randomized; 31 (5·8 per cent) developed an SSI. There was no difference in the overall SSI rate in the chlorhexidine gluconate and povidone–iodine groups: 15 of 267 (5·6 per cent) and 16 of 267 (6·0 per cent) respectively (P = 0·853). The most common causative organism was Enterococcus faecalis. In subgroup analysis, biliary–pancreatic surgery had a higher SSI rate (26 of 127, 20·5 per cent) than upper gastrointestinal (2 of 204, 1·0 per cent) and hepatic (3 of 203, 1·5 per cent) resection. Both age (60 years and over) and type of incision were associated with the risk of SSI.
Conclusion
No difference was detected between chlorhexidine gluconate and povidone–iodine antiseptics for prevention of SSI. Registration number: NCT01495117 (http://www.clinicaltrials.gov).
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Cho S, Seo HJ, Lee J, Yu HJ, Lee SD. Kinship Testing Based on SNPs Using Microarray System. Transfus Med Hemother 2016; 43:429-432. [PMID: 27994531 DOI: 10.1159/000446322] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/15/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Kinship testing using biallelic SNP markers has been demonstrated to be a promising approach as a supplement to standard STR typing, and several systems, such as pyrosequencing and microarray, have been introduced and utilized in real forensic cases. The Affymetrix microarray containing 169 autosomal SNPs developed for forensic application was applied to our practical case for kinship analysis that had remained inconclusive due to partial STR profiles of degraded DNA and possibility of inbreeding within the population. CASE REPORT 169 autosomal SNPs were typed on array with severely degraded DNA of two bone samples, and the kinship compared to genotypes in a reference database of their putative family members. RESULTS Two bone samples remained unidentified through traditional STR typing with partial profiles of 10 or 14 of 16 alleles. Because these samples originated from a geographically isolated population, a cautious approach was required when analyzing and declaring true paternity only based on PI values. In a supplementary SNP typing, 106 and 78 SNPs were obtained, and the match candidates were found in each case with improved PI values than using only STRs and with no discrepant SNPs in comparison. CONCLUSION Our case showed that the utility of multiple SNPs on array is expected in practical forensic caseworks with an establishment of reference database.
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Jung SE, Cho S, Antunes J, Gomes I, Uchimoto ML, Oh YN, Di Giacomo L, Schneider PM, Park MS, van der Meer D, Williams G, McCord B, Ahn HJ, Choi DH, Lee YH, Lee SD, Lee HY. A collaborative exercise on DNA methylation based body fluid typing. Electrophoresis 2016; 37:2759-2766. [DOI: 10.1002/elps.201600256] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 06/01/2016] [Accepted: 07/10/2016] [Indexed: 01/25/2023]
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Kokturk N, Kilic H, Baha A, Lee SD, Jones PW. Sex Difference in Chronic Obstructive Lung Disease. Does it Matter? A Concise Review. COPD 2016; 13:799-806. [PMID: 27398767 DOI: 10.1080/15412555.2016.1199666] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Chronic obstructive lung disease (COPD) primarily affects men; however, its epidemiology has been changing because more women have become smokers. Recently, investigators found that although women and men were exposed to the same amount of smoke fume, women tended to have more severe disease and higher mortality rate. They also complain of more dyspnoea and may experience more severe exacerbations than men. This led to the question of whether sex has an impact on COPD course and whether women have a higher susceptibility to smoke fumes than men. That may be explained by multiple complex factors highlighting the relationship between sex, epidemiology, method of diagnostics and the clinical course of the disease. In this review, sex differences in epidemiology, clinical presentation, exacerbation, co-morbidities and treatment are covered.
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Kim SH, Lee SD, Kim YK, Park SJ. Impact of Intra-Abdominal Adhesion on Living Donor Right Hepatectomy. Am J Transplant 2016; 16:1788-94. [PMID: 26613370 DOI: 10.1111/ajt.13636] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 10/26/2015] [Accepted: 11/14/2015] [Indexed: 01/25/2023]
Abstract
The impact of intra-abdominal adhesion (IAA) on living donor right hepatectomy (LDRH) remains to be clarified. The purpose of this study was to compare both the donor and recipient outcomes of right lobe living donor liver transplantation according to IAA detected intraoperatively. LDRH donors were identified through a prospectively maintained database at the authors' institution between March 2008 and February 2014. IAA was graded according to Beck et al (Dis Colon Rectum 2000; 43: 1749-1753). LDRH donors with IAA (group A) were matched 1:3 to those without IAA (group B) based on age, gender, and BMI. Perioperative data, complications by the Clavien classification, and the outcomes with at least 12 months follow-up were compared. Thirty-two (7.6%) of a total of 420 LDRH donors had IAA around the liver. Nineteen donors had previous abdominal surgery. LDRH was successfully completed under upper midline laparotomy in all donors. Compared with group B, group A had a longer operative time (270 vs. 172 min; p < 0.001), a higher wound complication rate (28.1% vs. 4.2%; p = 0.009), and a longer postoperative stay (10 vs. 7 days; p = 0.009). All donors recovered completely to their previous activities. The 1-year graft and recipient survivals of recipients were comparable between two groups. These findings support the feasibility and safety of LDRH in patients with IAA.
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Feagan BG, Sandborn WJ, D'Haens G, Lee SD, Allez M, Fedorak RN, Seidler U, Vermeire S, Lawrance IC, Maroney AC, Jurgensen CH, Heath A, Chang DJ. Randomised clinical trial: vercirnon, an oral CCR9 antagonist, vs. placebo as induction therapy in active Crohn's disease. Aliment Pharmacol Ther 2015; 42:1170-81. [PMID: 26400458 DOI: 10.1111/apt.13398] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 06/16/2015] [Accepted: 08/18/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Many patients with active Crohn's disease do not adequately respond to therapies, highlighting the need for new treatments. AIMS To conduct a randomised, double-blind, placebo-controlled phase 3 study to assess the efficacy and safety of vercirnon, an oral inhibitor of CC chemokine receptor-9, for the treatment of patients with moderately-to-severely active Crohn's disease. METHODS Patients with a Crohn's Disease Activity Index (CDAI) of 220-450, plus evidence of active disease (endoscopically confirmed or elevation of both C-reactive protein and faecal calprotectin), who had failed corticosteroid or immunosuppressant therapy were enrolled. Patients were equally randomised to receive placebo, vercirnon 500 mg once daily or vercirnon 500 mg twice daily. The primary endpoint was clinical response, defined as a 100-point decrease in CDAI from baseline to week 12. RESULTS Six hundred and eight patients were randomised. Patient characteristics and baseline demographics were similar among the groups. The proportions of patients achieving a clinical response were 25.1%, 27.6% and 27.2% for placebo, once daily and twice daily respectively; treatment differences were not significant (2.5%; 95% confidence interval, CI -6.1% to 11.0%, P = 0.546 for once daily vs. placebo, and 2.1%; 95% CI -6.5% to 10.7%, P = 0.648 for twice daily vs. placebo). Adverse events were reported in 69.8%, 73.3% and 78.1% with serious adverse events in 8.9%, 5.9%, and 6.0% of patients in the placebo, once-daily and twice-daily groups, respectively. CONCLUSIONS We did not demonstrate efficacy of vercirnon as an induction therapy in patients with moderately-to-severely active Crohn's disease; its effect in maintenance therapy was not addressed.
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Oh CS, Lee SD, Shin KJ, Shin DH. Effectiveness of Coupled Application of AmpFℓSTR Yfiler Kit and Reduced Size Y-chromosomal Short Tandem Repeat Analysis for Archeological Human Bones. J Forensic Sci 2015; 61:430-438. [PMID: 26375610 DOI: 10.1111/1556-4029.12950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 03/13/2015] [Accepted: 03/22/2015] [Indexed: 11/27/2022]
Abstract
The AmpFℓSTR Yfiler PCR Amplification (Yfiler) kit continues to be improved for a better analytical efficiency in cases of highly degraded DNA. The authors endeavored to determine whether coupling of the Yfiler kit with supplemental multiplex amplification of some Y-STR loci is a more efficient analytical mode for poorly preserved human femurs (n = 15) discovered at Korean archeological sites. To reveal locus profiles not easily obtained by Yfiler analysis, custom-designed primers were adopted for the DYS390, DYS391, DYS392, DYS438, DYS439, and DYS635 loci. The success rate for 16 Y-STR locus profiles obtained from the 15 femurs was improved from 18.33% (in the use of Yfiler kit only) to 49.17% (the coupled use of Yfiler and custom-designed primers). In this study, the authors established that the custom-designed primers offer a markedly improved success rate for obtainment of Y-STR profiles from degraded aDNA not easily identified by sole use of the Yfiler assay.
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Sandborn WJ, Melmed GY, McGovern DPB, Loftus EV, Choi JM, Cho JH, Abraham B, Gutierrez A, Lichtenstein G, Lee SD, Randall CW, Schwartz DA, Regueiro M, Siegel CA, Spearman M, Kosutic G, Pierre-Louis B, Coarse J, Schreiber S. Clinical and demographic characteristics predictive of treatment outcomes for certolizumab pegol in moderate to severe Crohn's disease: analyses from the 7-year PRECiSE 3 study. Aliment Pharmacol Ther 2015; 42:330-42. [PMID: 26031921 DOI: 10.1111/apt.13251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 03/30/2015] [Accepted: 04/28/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND Clinical factors were previously identified as predictors of short-term treatment efficacy in Crohn's disease (CD). The PRECiSE 3 (P3) 7-year trial provides an opportunity to study predictors of short- and long-term clinical remission among CD patients treated with certolizumab pegol (CZP). AIM To identify factors that influence long-term remission of CD with CZP treatment. METHODS Patients who had completed placebo-controlled studies (PRECiSE 1/PRECiSE 2, P1/P2) enrolled in P3 and received open-label CZP 400 mg every 4 weeks up to 7 years. Baseline predictors included, but were not limited to, smoking status, disease duration, prior inflammatory bowel disease (IBD) surgery, Harvey-Bradshaw Index (HBI), albumin, haematocrit and CZP exposure; association with time to initial remission (HBI ≤4) was tested for patients who received CZP in P1/P2; time to loss of remission/frequency of maintenance of remission was also tested. Univariate analyses and multivariate Cox or logistic regression models were used. RESULTS Predictors for initial remission (N = 377) included age, haematocrit, prior IBD surgery and entry HBI (P < 0.05 for all). Predictors for loss of remission (N = 437) included HBI, serum albumin concentration, haematocrit, smoking status and exposure. Predictors of maintenance of remission (N = 437) included haematocrit, IBD surgery, HBI, disease duration, serum albumin concentration and exposure. Significant predictors were confirmed with stepwise multivariate regression models. CONCLUSIONS These analyses identified several influential parameters for short-and long-term remission of Crohn's disease with certolizumab pegol treatment. The data yield valuable hypotheses regarding factors that influence certolizumab pegol treatment. More investigation is needed. (ClinicalTrials.gov identifier NCT00552058).
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Kim SH, Kim YK, Lee SD, Park SJ. Successful living donor liver transplantation between septuagenarians. Am J Transplant 2015; 15:274-7. [PMID: 25331693 DOI: 10.1111/ajt.13020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/21/2014] [Accepted: 08/07/2014] [Indexed: 01/25/2023]
Abstract
We report a case of a 76-year-old female who underwent living donor right hepatectomy for her 75-year-old husband with recurrent hepatocellular carcinoma. With her voluntary decision, full medical and psychiatric assessment was performed. The operative time was 130 min in the donor and 399 min in the recipient. Both the donor and recipient had an uneventful recovery and were discharged on days 7 and 10, respectively with normal liver function. The couple has had no complication so far and is currently doing well in good health 26 months after living donor liver transplantation.
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Lee SD, Lee BJ, Park JJ, Kim JS, Bak YT. Education and imaging. Gastrointestinal: Impacted gastric balloon in small bowel. J Gastroenterol Hepatol 2015; 30:1. [PMID: 25536457 DOI: 10.1111/jgh.12825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Cho S, Yu HJ, Han J, Kim Y, Lee J, Lee SD. Forensic application of SNP-based resequencing array for individual identification. Forensic Sci Int Genet 2014; 13:45-52. [DOI: 10.1016/j.fsigen.2014.07.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 06/02/2014] [Accepted: 07/01/2014] [Indexed: 01/13/2023]
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Sandborn WJ, Lee SD, Randall C, Gutierrez A, Schwartz DA, Ambarkhane S, Kayhan C, Pierre-Louis B, Schreiber S, Lichtenstein GR. Long-term safety and efficacy of certolizumab pegol in the treatment of Crohn's disease: 7-year results from the PRECiSE 3 study. Aliment Pharmacol Ther 2014; 40:903-16. [PMID: 25146586 DOI: 10.1111/apt.12930] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 05/28/2014] [Accepted: 07/31/2014] [Indexed: 01/20/2023]
Abstract
BACKGROUND The efficacy and safety of certolizumab pegol (CZP) in moderate-to-severe Crohn's disease were demonstrated in two 26-week double-blind studies (PRECiSE 1 & 2). AIM To report the safety and efficacy outcomes of long-term, CZP therapy from PRECiSE 3, in which patients received treatment up to 7 years treatment. METHODS Patients completing PRECiSE 1 or 2 were eligible to enter PRECiSE 3 in which they received CZP 400 mg, open-label, every 4 weeks (without additional induction therapy) for up to 7 years, for up to 91 doses from study start. Safety (adverse events, including infections and malignancies) and efficacy (Harvey-Bradshaw Index, faecal calprotectin, C-reactive protein) were prospectively monitored. Remission was analysed using observed cases, last observation carried forward imputation and nonresponder imputation. RESULTS A total of 595 patients entered the study; 117 (20%) completed 7 years. Discontinuation rates were 29.2%, 13.6%, 16.1%, 7.9%, 5.0%, 4.5% and 3.9% (years 1-7 respectively). During 1920 patient-years of exposure to CZP, no new safety signals were observed. Incidence rates (new cases/100 patient-years) for serious infections and malignant neoplasms were 4.37 and 1.06 respectively. No lymphoproliferative malignancies were reported. Clinical remission rates were ≥68% at each year (observed cases); rates by last observation carried forward and nonresponder imputation were 58% and 45% at year 1, 56% and 26% at year 3 and 55% and 13% at year 7 respectively. CONCLUSION Certolizumab pegol was well tolerated in the long-term treatment of Crohn's disease, with sustained remission in some patients continuing in the study for up to 7 years. ClinicalTrials.gov identifier NCT00552058.
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Hershkovitz I, Spigelman M, Sarig R, Lim DS, Lee IS, Oh CS, May H, Boaretto E, Kim YS, Lee SD, Peled N, Kim MJ, Toledano T, Bar-Gal GK, Shin DH. A possible case of cherubism in a 17th-century Korean mummy. PLoS One 2014; 9:e102441. [PMID: 25093864 PMCID: PMC4122385 DOI: 10.1371/journal.pone.0102441] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 05/26/2014] [Indexed: 11/18/2022] Open
Abstract
Cherubism is a benign fibro-osseous disease of childhood limited specifically to the maxilla and mandible. The progressive replacement of the jaw bones with expansile multilocular cystic lesions causes eventual prominence of the lower face, and hence the classic “cherubic” phenotype reflecting variable extents of jaw hypertrophy. Histologically, this condition has been characterized as replacement of the normal bone matrix with multicystic pockets of fibrous stroma and osteoclastic giant cells. Because of radiographic features common to both, primarily the presence of multiloculated lucencies with heterogeneous “ground-glass” sclerosis on CT imaging, cherubism was long mistaken for a craniofacial subtype of fibrous dysplasia. In 1999, however, the distinct genetic basis for cherubism was mapped to chromosome 4p16.3 and the SH-3 binding protein SH3BP2. But while there are already three suspected cases of fibrous dysplasia amongst archaeological populations, no definitive cases of cherubism have yet been reported in historical populations. In the current study we describe micro- and macro-structural changes in the face of a 17th century Joseon Dynasty Korean mummy which may coincide with the clinic-pathologic and radiologic features of cherubism.
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Park JC, Kim SC, Lee SD, Jang HC, Kim NK, Lee SH, Jung HJ, Kim IC, Seong HH, Choi BH. Effects of Dietary Fat Types on Growth Performance, Pork Quality, and Gene Expression in Growing-finishing Pigs. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 25:1759-67. [PMID: 25049542 PMCID: PMC4094162 DOI: 10.5713/ajas.2012.12416] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Revised: 09/16/2012] [Accepted: 09/04/2012] [Indexed: 11/27/2022]
Abstract
This study was performed to determine the effects of dietary fat sources, i.e., beef tallow, soybean oil, olive oil and coconut oil (each 3% in feed), on the growth performance, meat quality and gene expression in growing-finishing pigs. A total of 72 crossbred pigs (Landrace×Large White×Duroc) were used at 71±1 kg body weight (about 130 d of age) in 24 pens (320×150 cm) in a confined pig house (three pigs per pen) with six replicate pens per treatment. The growing diet was given for periods of 14±3 d and the finishing diet was given for periods of 28±3 d. The fat type had no significant effect either on growth performance or on chemical composition or on meat quality in growing-finishing pigs. Dietary fat type affected fatty acid composition, with higher levels of unsaturated fatty acids (UFAs) and monounsaturated fatty acids (MUFAs) in the olive oil group. Microarray analysis in the Longissimus dorsi identified 6 genes, related to insulin signaling pathway, that were differentially expressed among the different feed groups. Real time-PCR was conducted on the six genes in the longissimus dorsi muscle (LM). In particular, the genes encoding the protein kinase, cAMP-dependent, regulatory, type II, alpha (PRKAR2A) and the catalytic subunit of protein phosphatase 1, beta isoform (PPP1CB) showed the highest expression level in the olive oil group (respectively, p<0.05, p<0.001). The results of this study indicate that the type of dietary fat affects fatty acid composition and insulin signaling-related gene expression in the LM of pigs.
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Kim YK, Kim SH, Lee SD, Park SJ. Clinical outcomes and risk factors of hepatitis B virus recurrence in patients who received prophylaxis with entecavir and hepatitis B immunoglobulin following liver transplantation. Transplant Proc 2014; 45:3052-6. [PMID: 24157034 DOI: 10.1016/j.transproceed.2013.08.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Although entecavir (ETV) and hepatitis B immunoglobulin (HBIG) have widely been used for prophylaxis of hepatitis B virus (HBV) recurrence following liver transplantation (OLT), there have been few studies about clinical outcomes and risk factors of HBV recurrence. MATERIALS AND METHODS This study retrospectively assessed clinical outcomes and identified risk factors of post-transplant HBV recurrence in 154 patients who received prophylaxis with both ETV and HBIG after OLT. RESULTS The median follow-up duration was 28.0 months (range, 1.0-57.8). Post-transplant HBV recurrence occurred in 5 patients (3.2%) without any ETV-resistant mutants. The overall rates of HBV recurrence at 1, 2, and 4 years were 0.6%, 1.6%, and 6.2%, respectively. We found that recurrent hepatocellular carcinoma (HCC) was an independent risk factor of HBV recurrence (hazard ratio = 13.5, 95% confidence interval, 2.4-74.4; P = .006). CONCLUSIONS Prophylaxis with a combination of ETV and HBIG resulted in a low HBV recurrence rate following OLT without any emergence of ETV-resistant mutants. Recurrent HCC was an independent risk factor of HBV recurrence in patients who received prophylaxis with both ETV and HBIG for prophylaxis following OLT.
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