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Jeong J, Lee JY, Moon JS, Kang MS, Kang SI, Lee OM, Lee SH, Kwon YK, Chae M, Cho S. Virulence Genes, Antimicrobial Resistance, and Genotypes of Campylobacter jejuni Isolated from Chicken Slaughterhouses in South Korea. Foodborne Pathog Dis 2024. [PMID: 38608218 DOI: 10.1089/fpd.2023.0144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024] Open
Abstract
Campylobacter jejuni represents one of the leading causes of bacterial gastroenteritis in humans and is primarily linked to chicken meat contamination. In the present study, we analyzed the virulence and survival genes, antimicrobial resistance, and the clonal distribution of 50 C. jejuni isolates obtained from various sources in 14 chicken slaughterhouses across 8 provinces in South Korea from 2019 to 2022. Furthermore, we determined their genetic relatedness to human-derived isolates registered in PubMLST using multilocus sequence typing (MLST). All isolates harbored various virulence and survival genes (flhA, cadF, cdtA, cdtC, cmeA, and sodB) out of 17 tested genes, as confirmed via polymerase chain reaction analysis. Adherence factor gene virB11 was not detected in any isolate. All isolates harbored 12 or more virulence and survival genes. Antimicrobial susceptibility testing indicated that ciprofloxacin resistance was the most prevalent (84.0%), followed by nalidixic acid (82.0%) and tetracycline (52.0%) resistance. MLST analysis of the isolates revealed 18 sequence types (STs), including four new ones. Overlapping STs between chicken slaughterhouse and human-derived isolates included ST42, ST45, ST50, ST137, ST354, and ST464. Our study identified 11 clonal complexes (CCs), with CC-21 being the most prevalent in both human and chicken slaughterhouse-derived isolates. This study provides comprehensive insights into recent C. jejuni isolates from chicken slaughterhouses, including data on quinolone resistance and virulence factors. The MLST-based genetic relatedness between isolates from humans and chicken slaughterhouses in this study suggests the potential of C. jejuni transmission from chickens to humans through the food chain. This study suggests the need for improved management practices in chicken slaughterhouses to reduce the transmission of chicken slaughterhouse-derived C. jejuni to humans.
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Affiliation(s)
- Jiyeon Jeong
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
- Department of Veterinary Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Ji-Youn Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Jin-San Moon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Min-Su Kang
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Sung-Il Kang
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - O-Mi Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - So-Hee Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Yong-Kuk Kwon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Myeongju Chae
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - Seongbeom Cho
- Department of Veterinary Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
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Kang MS, Yu-Chin C. Concurrent expectation and experience-based metacontrol: EEG insights and the role of working memory capacity. Cogn Affect Behav Neurosci 2024:10.3758/s13415-024-01163-2. [PMID: 38291309 DOI: 10.3758/s13415-024-01163-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
We investigated the simultaneous influence of expectation and experience on metacontrol, which we define as the instantiation of context-specific control states. These states could entail heightened control states in preparation for frequent task switching or lowered control states for task repetition. Specifically, we examined whether "expectations" regarding future control demands prompt proactive metacontrol, while "experiences" with items associated with specific control demands facilitate reactive metacontrol. In Experiment 1, we utilized EEG with a high temporal resolution to differentiate between brain activities associated with proactive and reactive metacontrol. We successfully observed cue-locked and image-locked ERP patterns associated with proactive and reactive metacontrol, respectively, supporting concurrent instantiation of two metacontrol modes. In Experiment 2, we focused on individual differences to investigate the modulatory role of working memory capacity (WMC) in the concurrent instantiation of two metacontrol modes. Our findings revealed that individuals with higher WMC exhibited enhanced proactive metacontrol, indicated by smaller response time variability (RTV). Additionally, individuals with higher WMC showed a lower tendency to rely on reactive metacontrol, indicated by a smaller item-specific switch probability (ISSP) effect. In conclusion, our results suggest that proactive and reactive metacontrol can coexist, but their interplay is influenced by individuals' WMC. Higher WMC promotes the use of proactive metacontrol while attenuating reliance on reactive metacontrol. This study provides insights into the interplay between proactive and reactive metacontrol and highlights the impact of WMC on their concurrent instantiation.
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Affiliation(s)
- M S Kang
- Department of Psychological Sciences, Purdue University, West Lafayette, IN, USA.
| | - C Yu-Chin
- Department of Psychological Sciences, Purdue University, West Lafayette, IN, USA
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Hoost SS, Brickman AM, Manly JJ, Honig LS, Gu Y, Sanchez D, Reyes-Dumeyer D, Lantigua RA, Kang MS, Dage JL, Mayeux R. Effects of Vascular Risk Factors on the Association of Blood-Based Biomarkers with Alzheimer's Disease. Med Res Arch 2023; 11:10.18103/mra.v11i9.4468. [PMID: 38037598 PMCID: PMC10688358 DOI: 10.18103/mra.v11i9.4468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Background Comorbidities may influence the levels of blood-based biomarkers for Alzheimer's disease (AD). We investigated whether differences in risk factors or comorbid conditions might explain the discordance between clinical diagnosis and biomarker classifications in a multi-ethnic cohort of elderly individuals. Aims To evaluate the relationship of medical conditions and other characteristics, including body mass index (BMI), vascular risk factors, and head injury, with cognitive impairment and blood-based biomarkers of AD, phosphorylated tau (P-tau 181, P-tau 217), in a multi-ethnic cohort. Methods Three-hundred individuals, aged 65 and older, were selected from a prospective community-based cohort for equal representation among three racial/ethnic groups: non-Hispanic White, Hispanic/Latino and African American/Black. Participants were classified into four groups based on absence (Asym) or presence (Sym) of cognitive impairment and low (NEG) or high (POS) P-tau 217 or P-tau 181 levels, determined previously in the same cohort: (Asym/NEG, Asym/POS, Sym/NEG, Sym/POS). We examined differences in individual characteristics across the four groups. We performed post-hoc analysis examining the differences across biomarker and cognitive status. Results P-tau 217 or P-tau 181 positive individuals had lower BMI than P-tau negative participants, regardless of symptom status. Symptomatic and asymptomatic participants did not differ in terms of BMI. BMI was not a mediator of the effect of P-tau 217 or P-tau 181 on dementia. Frequencies of other risk factors did not differ between the four groups of individuals. Conclusions Participants with higher levels of P-tau 217 or P-tau 181 consistent with AD had lower BMI regardless of whether the individual was symptomatic. These findings suggest that weight loss may change with AD biomarker levels before onset of cognitive decline. They do not support BMI as a confounding variable. Further longitudinal studies could explore the relationship of risk factors with clinical diagnoses and biomarkers.
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Affiliation(s)
- SS Hoost
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - AM Brickman
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - JJ Manly
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - LS Honig
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - Y Gu
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - D Sanchez
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - D Reyes-Dumeyer
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - RA Lantigua
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
| | - MS Kang
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
| | - JL Dage
- Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN
- Department of Neurology, Indiana University School of Medicine, Indianapolis, IN
- Indiana Alzheimer’s Disease Research Center, Indiana University School of Medicine Indianapolis IN
| | - R Mayeux
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- G.H. Sergievsky Center, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY
- Department of Neurology, Vagelos College of Physicians and Surgeons, Columbia University, and the New York Presbyterian Hospital, New York, NY
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Lee HJ, Lee OM, Kang SI, Yeo YG, Jeong JY, Kwon YK, Kang MS. Prevalence of asymptomatic infections of Chlamydia psittaci in psittacine birds in Korea. Zoonoses Public Health 2023. [PMID: 37005713 DOI: 10.1111/zph.13039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 02/07/2023] [Accepted: 03/15/2023] [Indexed: 04/04/2023]
Abstract
Avian chlamydiosis is an acute or chronic bacterial disease of birds. Chlamydia psittaci is the primary agent of the disease. It is also an important zoonotic pathogen. Chlamydia avium and Chlamydia gallinacea have also been recognized as potential causative agents of the disease. Clinical signs of this disease can vary in severity. Asymptomatic infections of Chlamydia have commonly been reported in various birds worldwide. In this study, we investigated the distribution of Chlamydia species in healthy psittacine birds in Korea. A total of 263 samples (pharyngeal/cloacal swabs and faeces) were collected from psittacine birds of 26 species in five zoos, five parrot farms and seven parrot cafes between 2020 and 2021. Ages of these birds had a wide range (1 month to 30 years). During sample collection, no bird showed any clinical signs indicating diseases such as chlamydiosis. Samples were tested for the presence of Chlamydia spp. using real-time PCR assays. Chlamydia spp. were detected in 168 (63.9%) samples and C. psittaci was detected in 96 (36.5%) samples. However, C. avium and C. gallinacea were not detected. There were no significant differences in the prevalence of asymptomatic infections in birds among three types of housing environments. Regarding ompA genotypes, 87 C. psittaci-positive samples had genotype A based on sequence analysis (n = 28) and genotype-specific real-time PCR (n = 59). Other positive samples were untyped (n = 9). Overall findings showed high prevalence of asymptomatic infections of C. psittaci in psittacine birds in Korea, posing a significant hazard to public health.
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Affiliation(s)
- Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - O-Mi Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Sung-Il Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | | | - Ji-Yeon Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
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Lee OM, Lee HJ, Kang SI, Jeong JY, Kwon YK, Kang MS. A multiplex real-time PCR assay for differential identification of avian Chlamydia. Avian Pathol 2022; 51:164-170. [PMID: 35076325 DOI: 10.1080/03079457.2022.2031882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Avian chlamydiosis is an acute or chronic disease of birds after infection by Chlamydia. Although Chlamydia psittaci is the primary agent of the disease, two additional species, Chlamydia avium and Chlamydia gallinacea, have also been recognized as potential disease agents. Therefore, the diagnosis of avian chlamydiosis requires differential identification of these avian Chlamydia species. The objective of the present study was to develop a multiplex real-time polymerase chain reaction (PCR) assay to rapidly differentiate between these three species of avian Chlamydia (C. psittaci, C. avium, and C. gallinacea) as well as the genus Chlamydia. Specific genetic regions of the three species were identified by comparative analysis of their genome sequences. Also, the genus-specific region was selected based on 23S rRNA sequences. PCR primers and probes specific to the genus and each species were designed and integrated in the multiplex real-time PCR assay. The assay was highly efficient (94.8-100.7%). It detected less than 10 copies of each target sequence of the genus and each species. Twenty-five Chlamydia control and field DNA samples were differentially identified while 20 other bacterial strains comprising 10 bacterial genera were negative in the assay. This assay allows rapid, sensitive, and specific detection of the genus and the three species of avian Chlamydia in a single protocol that is suitable for routine diagnostic purposes in avian diagnostic laboratories.
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Affiliation(s)
- O-Mi Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Sung-Il Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Ji-Yeon Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
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Son IS, Han SY, Chung HJ, Hong JE, Kang MS. Unstable Non-isthmic Spondylolisthesis Following Unilateral Biportal Endoscopy Assisted Unilateral Laminotomy for Bilateral Decompression: A Case Report. Malays Orthop J 2021; 15:147-151. [PMID: 34966512 PMCID: PMC8667255 DOI: 10.5704/moj.2111.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 08/27/2021] [Indexed: 11/05/2022] Open
Abstract
Lumbar decompressive laminectomy is a standard treatment for degenerative lumbar spinal stenosis, but in some cases, can lead to iatrogenic spondylolysis and delayed segmental instability. Iatrogenic spondylolysis occurs in most cases in pars interarticularis, but rare cases have also been reported, pediculolysis in pedicle and laminolysis in lamina. Minimally invasive spine surgery (MIS) is known to have a low risk of developing these iatrogenic spondylolyses, and unilateral biportal endoscopy is the MIS that has been drawing attention. We present a case of a 72-year-old female who was diagnosed with L4-5 unstable non-isthmic spondylolisthesis and severe right central disc extrusion 10 weeks after UBE assisted unilateral laminotomy for bilateral decompression (ULBD) at the consecutive segments of L3-4 and L4-5. Pre-operative imaging studies revealed severe central stenosis without spondylolisthesis at L3-L4 and L4-L5 along with L4-L5 facet tropism. She was managed by anterior lumbar interbody fusion and cement augmented pedicle screw fixation, which resulted in the complete resolution of her clinical and neurologic symptoms.
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Affiliation(s)
- I S Son
- Department of Orthopedic Surgery, Jeju National University College of Medicine and Graduate School of Medicine, Jeju, South Korea
| | - S Y Han
- Department of Neurosurgery, Yonsei Knee Spine Hospital, Seoul, South Korea
| | - H J Chung
- Department of Orthopedic Surgery, Bumin Hospital Seoul, Seoul, South Korea
| | - J E Hong
- Department of Orthopedic Surgery, Jeju National University College of Medicine and Graduate School of Medicine, Jeju, South Korea
| | - M S Kang
- Department of Orthopedic Surgery, Bumin Hospital Seoul, Seoul, South Korea
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Yoon HM, Kang MS, Choi GE, Kim YJ, Bae CH, Yu YB, Jeong YIL. Stimuli-Responsive Drug Delivery of Doxorubicin Using Magnetic Nanoparticle Conjugated Poly(ethylene glycol)- g-Chitosan Copolymer. Int J Mol Sci 2021; 22:ijms222313169. [PMID: 34884973 PMCID: PMC8658650 DOI: 10.3390/ijms222313169] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 12/27/2022] Open
Abstract
Stimuli-responsive nanoparticles are regarded as an ideal candidate for anticancer drug targeting. We synthesized glutathione (GSH) and magnetic-sensitive nanocomposites for a dual-targeting strategy. To achieve this goal, methoxy poly (ethylene glycol) (MePEG) was grafted to water-soluble chitosan (abbreviated as ChitoPEG). Then doxorubicin (DOX) was conjugated to the backbone of chitosan via disulfide linkage. Iron oxide (IO) magnetic nanoparticles were also conjugated to the backbone of chitosan to provide magnetic sensitivity. In morphological observation, images from a transmission electron microscope (TEM) showed that IO nanoparticles were embedded in the ChitoPEG/DOX/IO nanocomposites. In a drug release study, GSH addition accelerated DOX release rate from nanocomposites, indicating that nanocomposites have redox-responsiveness. Furthermore, external magnetic stimulus concentrated nanocomposites in the magnetic field and then provided efficient internalization of nanocomposites into cancer cells in cell culture experiments. In an animal study with CT26 cell-bearing mice, nanocomposites showed superior magnetic sensitivity and then preferentially targeted tumor tissues in the field of external magnetic stimulus. Nanocomposites composed of ChitoPEG/DOX/IO nanoparticle conjugates have excellent anticancer drug targeting properties.
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Affiliation(s)
- Hyun-Min Yoon
- Department of Industrial and Management Engineering, POSTECH, Gyeongbuk, Pohang 37673, Korea;
| | - Min-Su Kang
- Department of Bio and Brain Engineering, KAIST, Daejeon 34141, Korea;
| | - Go-Eun Choi
- College of Medicine, Hanyang University, Seoul 04763, Korea;
| | | | - Chang-Hyu Bae
- Department of Well-being Bioresources, Sunchon National University, Suncheon 57922, Korea;
| | - Young-Bob Yu
- Department of Emergency Medical Rescue & Department of Herbal Pharmaceutical Development, Nambu University, Gwangju 62271, Korea
- Correspondence: (Y.-B.Y.); (Y.-I.J.); Tel.: +82-62-970-0163 (Y.-B.Y.), +82-62-230-7567 (Y-.I.J)
| | - Young-IL Jeong
- The Institute of Dental Science, Chosun University, Gwangju 61452, Korea
- Research Institute of Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongnam, Yangsan 50612, Korea
- Correspondence: (Y.-B.Y.); (Y.-I.J.); Tel.: +82-62-970-0163 (Y.-B.Y.), +82-62-230-7567 (Y-.I.J)
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Lee K, Oh HJ, Kang MS, Kim S, Ahn S, Kim MJ, Kim SW, Chang S. Metagenomic analysis of gut microbiome reveals a dynamic change in Alistipes onderdonkii in the preclinical model of pancreatic cancer, suppressing its proliferation. Appl Microbiol Biotechnol 2021; 105:8343-8358. [PMID: 34648062 DOI: 10.1007/s00253-021-11617-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/12/2021] [Accepted: 09/20/2021] [Indexed: 12/13/2022]
Abstract
Pancreatic cancer is a lethal cancer with aggressive and invasive characteristics. By the time it is diagnosed, patients already have tumors extended to other organs and show extremely low survival rates. The gut microbiome is known to be associated with many diseases and its imbalance affects the pathogenesis of pancreatic cancer. In this study, we established an orthotopic, patient-derived xenograft model to identify how the gut microbiome is linked to pancreatic ductal adenocarcinoma (PDAC). Using the 16S rDNA metagenomic sequencing, we revealed that the levels of Alistipes onderdonkii and Roseburia hominis decreased in the gut microbiome of the PDAC model. To explore the crosstalk between the two bacteria and PDAC cells, we collected the supernatant of the bacteria or cancer cell culture medium and treated it in a cross manner. While the cancer cell medium did not affect bacterial growth, we observed that the A. onderdonkii medium suppressed the growth of the pancreatic primary cancer cells. Using the bromodeoxyuridine/7-amino-actinomycin D (BrdU/7-AAD) staining assay, we confirmed that the A. onderdonkii medium inhibited the proliferation of the pancreatic primary cancer cells. Furthermore, RNA-seq analysis revealed that the A. onderdonkii medium induced unique transcriptomic alterations in the PDAC cells, compared to the normal pancreatic cells. Altogether, our data suggest that the reduction in the A. onderdonkii in the gut microbiome provides a proliferation advantage to the pancreatic cancer cells. KEY POINTS: • Metagenome analysis of pancreatic cancer model reveals A. onderdonkii downregulation. • A. onderdonkii culture supernatant suppressed the proliferation of pancreatic cancer cells. • RNA seq data reveals typical gene expression changes induced by A. onderdonkii.
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Affiliation(s)
- Kihak Lee
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Hyo Jae Oh
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Min-Su Kang
- Division of Applied Life Science (BK21 Four), PMBBRC, Gyeongsang National University, Jinju, Republic of Korea
| | - Sinae Kim
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Sehee Ahn
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Myung Ji Kim
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea
| | - Seon-Won Kim
- Division of Applied Life Science (BK21 Four), PMBBRC, Gyeongsang National University, Jinju, Republic of Korea.
| | - Suhwan Chang
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea.
- Department of Physiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, 05505, Republic of Korea.
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Lee HJ, Woo YK, Choi BK, Jeong OM, Kim JH, Kim DW, Jeong JY, Kwon YK, Kang MS. High prevalence of a gene cluster conferring resistance to streptomycin, sulfonamide, and tetracycline in Escherichia coli isolated from indigenous wild birds. J GEN APPL MICROBIOL 2021; 67:81-84. [PMID: 33487603 DOI: 10.2323/jgam.2020.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A total of 116 Escherichia coli isolates from cecal contents of 81 indigenous wild birds in Korea were tested for antimicrobial susceptibility. Seventy-one isolates from sparrows (Passer montanus) and one isolate from doves (Columba livia) were resistant to three antimicrobials, including streptomycin, sulfonamide, and tetracycline (SSuT). PCR and subsequent sequence analysis revealed the SSuT gene cluster region (approximately 13 kb) harboring genes encoding resistance to streptomycin (strA and strB), sulfonamide (sul2), and tetracycline (tetB, tetC, tetD, and tetR). In particular, tetracycline resistance genes were located on the transposon Tn10-like element. The SSuT element-harboring E. coli can be an important source of the transmission of antimicrobial resistance to other pathogenic bacteria. Therefore, strict sanitary measures in human and animal environments are necessary to prevent the spread of resistant bacteria through fecal residues of wild birds.
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Jeong J, Lee JY, Kang MS, Lee HJ, Kang SI, Lee OM, Kwon YK, Kim JH. Comparative Characteristics and Zoonotic Potential of Avian Pathogenic Escherichia coli (APEC) Isolates from Chicken and Duck in South Korea. Microorganisms 2021; 9:946. [PMID: 33925760 PMCID: PMC8145765 DOI: 10.3390/microorganisms9050946] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 11/16/2022] Open
Abstract
Avian pathogenic Escherichia coli (APEC) causes colibacillosis, which is an economically important disease in the poultry industry worldwide. The present study investigated O-serogroups, phylogenetic groups, antimicrobial resistance, and the existence of virulence-associated genes (VAGs) and antimicrobial resistance genes in 125 APEC isolates between 2018 and 2019 in Korea. The phylogenetic group B2 isolates were confirmed for human-related sequence types (STs) through multi-locus sequence typing (MLST). O-serogroups O2 (12.5%) and O78 (10.3%) and phylogenetic group B1 (36.5%) and A (34.5%) were predominant in chicken and duck isolates, respectively. Out of 14 VAGs, iucD, iroN, hlyF, and iss were found significantly more in chicken isolates than duck isolates (p < 0.05). The resistance to ampicillin, ceftiofur, ceftriaxone, and gentamicin was higher in chicken isolates than duck isolates (p < 0.05). The multidrug resistance (MDR) rates of chicken and duck isolates were 77.1% and 65.5%, respectively. One isolate resistant to colistin (MIC 16 μg/mL) carried mcr-1. The B2-ST95 APEC isolates possessed more than 9 VAGs, and most of them were MDR (82.4%). This report is the first to compare the characteristics of APEC isolates from chickens and ducks in Korea and to demonstrate that B2-ST95 isolates circulating in Korea have zoonotic potential and pose a public health risk.
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Affiliation(s)
| | | | | | | | | | | | | | - Jin-Hyun Kim
- Avian Disease Research Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si 39660, Gyeongsangbuk-do, Korea; (J.J.); (J.-Y.L.); (M.-S.K.); (H.-J.L.); (S.-I.K.); (O.-M.L.); (Y.-K.K.)
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Jeong J, Kang MS, Jeong OM, Lee HJ, Lee JY, Kwon YK, Park JW, Kim JH. Investigation of Genetic Diversity of Pasteurella multocida Isolated from Diseased Poultry in Korea. Braz J Poult Sci 2021. [DOI: 10.1590/1806-9061-2020-1390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- J Jeong
- Animal and Plant Quarantine Agency, Republic of Korea
| | - MS Kang
- Animal and Plant Quarantine Agency, Republic of Korea
| | - OM Jeong
- Animal and Plant Quarantine Agency, Republic of Korea
| | - HJ Lee
- Animal and Plant Quarantine Agency, Republic of Korea
| | - JY Lee
- Animal and Plant Quarantine Agency, Republic of Korea
| | - YK Kwon
- Animal and Plant Quarantine Agency, Republic of Korea
| | - JW Park
- Animal and Plant Quarantine Agency, Republic of Korea
| | - JH Kim
- Animal and Plant Quarantine Agency, Republic of Korea
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Kim JH, Lee HJ, Jeong OM, Kim DW, Jeong JY, Kwon YK, Kang MS. High prevalence and variable fitness of fluoroquinolone-resistant avian pathogenic Escherichia coli isolated from chickens in Korea. Avian Pathol 2020; 50:151-160. [PMID: 33242260 DOI: 10.1080/03079457.2020.1855322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Colibacillosis caused by avian pathogenic Escherichia coli (APEC) is the most common bacterial disease in poultry, resulting in significant economic losses. Resistance to fluoroquinolones has been found to be high in APEC worldwide, which has increased concerns about risks to human health as well as poultry production. In the present study, we determined the prevalence, genetic traits, and fitness traits of fluoroquinolone-resistant APEC isolated from chickens in Korea using a total of 286 APEC isolates collected between 2014 and 2017. The APEC isolates were highly resistant to nalidixic acid (86.0%), ampicillin (71.7%), tetracycline (69.6%), and sulfisoxazole (61.2%), and 132 (46.2%) of the isolates were resistant to both enrofloxacin and ciprofloxacin. These fluoroquinolone-resistant isolates showed eight mutation combinations including single- or double-point mutations in the gyrA, parC, or parE genes. The isolates with double mutations (codons 83 and 87) in gyrA and additional mutations in parC and parE showed high-level fluoroquinolone resistance (minimum inhibitory concentrations, 16-128 µg/ml). The isolates fell into four phylogenetic groups, and groups A (47/132, 35.6%) and B1 (47/132, 36.4%) were the most predominant. Nine isolates (6.8%) belonged to group B2 and included major lineages of extraintestinal pathogenic E. coli, sequence type (ST) 95 (n = 3) and ST69 (n = 2). The isolates varied in their virulence-associated gene content, biofilm formation, and intramacrophage survival. Overall, fluoroquinolone-resistant APEC in poultry poses a potential risk to public health and represents a highly diverse group of the resistant bacteria that varied in their genetic and fitness traits.
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Affiliation(s)
- Jin-Hyun Kim
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Hye-Jin Lee
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Ok-Mi Jeong
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Dong-Wan Kim
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Ji-Yeon Jeong
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Yong-Kuk Kwon
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
| | - Min-Su Kang
- Avian Disease Research Division, Animal and Plant Quarantine Agency, Gimcheon-si, Korea
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Lee HJ, Jeong JY, Jeong OM, Youn SY, Kim JH, Kim DW, Yoon JU, Kwon YK, Kang MS. Impact of Dermanyssus gallinae infestation on persistent outbreaks of fowl typhoid in commercial layer chicken farms. Poult Sci 2020; 99:6533-6541. [PMID: 33248568 PMCID: PMC7705004 DOI: 10.1016/j.psj.2020.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 08/20/2020] [Accepted: 09/11/2020] [Indexed: 12/02/2022] Open
Abstract
Although it has rapidly decreased since the early 2000s, fowl typhoid still occurs in commercial layer chickens, causing a significant economic loss in Korea. There is growing concern about the emergence of new pathogenic strains of the causative agent, Salmonella Gallinarum, which is able to overcome vaccine immunity. It has also been suspected that the poultry red mite, Dermanyssus gallinae, which is commonly found in layer chicken farms, may be an important cause of the recurrence of fowl typhoid in the farms. This study was conducted to examine changes in the virulence of recent isolates of S. Gallinarum obtained from layer farms and estimate the potential of the disease transmission of D. gallinae in the farms. Clinical and environmental samples and mites collected from layer farms affected by fowl typhoid between 2013 and 2018 were tested for S. Gallinarum. The isolates were characterized by genotypic analyses and in vitro virulence assays with chicken-derived cell lines. Vaccine protection against recent isolates was examined in the chickens. A total of 45 isolates of S. Gallinarum were collected and there was no evidence of changes in their virulence. It has also been demonstrated that the S. Gallinarum 9R vaccine strain widely used in Korea is still effective in controlling fowl typhoid if the susceptibility of birds to the disease is not increased by stress. Salmonella Gallinarum isolated from the outer and inner parts of D. gallinae, environmental dust, and dead birds of the same farm showed the same or closely related genotypes. Consequently, the present study indicated that the horizontal transmission and environmental persistence of S. Gallinarum and the increased disease susceptibility of chickens in layer farms could be mediated by D. gallinae, causing persistent outbreaks of fowl typhoid.
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Affiliation(s)
- Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Ji-Yeon Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Ok-Mi Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - So-Youn Youn
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Jin-Hyun Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Dong-Wan Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | | | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea
| | - Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Korea.
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Lee DK, Kang MS, Cho H. MRI size assessment of cerebral microvasculature using diffusion-time-dependent stimulated-echo acquisition: A feasibility study in rodent. Neuroimage 2020; 215:116784. [PMID: 32276059 DOI: 10.1016/j.neuroimage.2020.116784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 03/18/2020] [Accepted: 03/21/2020] [Indexed: 11/19/2022] Open
Abstract
In this study, a stimulated-echo (STE) method was employed to robustify the cerebral vessel size estimation near air-tissue, bone-tissue interfaces, and large vessels. The proposed solution is to replace the relaxation rate change from gradient-echo (GRE) with that from STE with long diffusion time after the injection of an intravascular contrast agent, superparamagnetic iron oxide nanoparticles. The corresponding diffusion length of STE is shorter than the length over which the unwanted macroscopic field inhomogeneities but is still longer than the correlation length of the fields induced by small vessels. Therefore, the unwanted field inhomogeneities are refocused, while preserving microscopic susceptibility contrast from cerebral vessels. The mean vessel diameter (dimensionless) derived from the diffusion-time-varying STE method was compared to the mean vessel diameter obtained by a conventional spin-echo (SE) and GRE combination based on Monte-Carlo proton diffusion simulations and in vivo rat experiments at 7 T. The in vivo mean vessel diameter from the MRI experiments was directly compared to available reference mouse brain vasculature obtained by a knife-edge scanning microscope (KESM), which is considered to be the gold standard. Monte-Carlo simulation revealed that SE and GRE-based MR relaxation rate changes (ΔR2 and ΔR2∗, respectively) can be enhanced using single STE-based MR relaxation rate change (ΔRSTE) by regulating diffusion time, especially for small vessels. The in vivo mean vessel diameter from the STE method demonstrated a closer agreement with that from the KESM compared to the combined SE and GRE method, especially in the olfactory bulb and cortex. This study demonstrates that STE relaxation rate changes can be used as consistent measures for assessing small cerebral microvasculature, where macroscopic field inhomogeneity is severe and signal contamination from adjacent large vessels is significant.
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Affiliation(s)
- D K Lee
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - M S Kang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea
| | - H Cho
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea.
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Jeong OM, Kang MS, Blackall PJ, Jeon BW, Kim JH, Jeong J, Lee HJ, Kim DW, Kwon YK, Kim JH. Genotypic divergence of Avibacterium paragallinarum isolates with different growth requirements for nicotinamide adenine dinucleotide. Avian Pathol 2019; 49:153-160. [PMID: 31709803 DOI: 10.1080/03079457.2019.1692128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In 2017, for the first time in Asia, we reported the isolation of variants of Avibacterium paragallinarum with atypical NAD dependency. The present study was conducted to characterize the genotypes of 24 isolates of Av. paragallinarum in Korea, including the four variants reported previously. Most of the typical isolates (19/20) showed a unique ERIC-PCR pattern with no ERIC-PCR patterns in common between the typical isolates and the variants. Furthermore, the variants shared no ERIC-PCR patterns among themselves. All the typical NAD-dependent isolates belonged to the same phylogenetic group based on both 16S rRNA and hagA gene sequences. The four variants were placed in several groups distinct from the typical isolates. In the 16S rRNA phylogenetic analysis, two of the variants were not closely aligned to any other Av. paragallinarum, isolate although they were clearly members of the genus Avibacterium. The other variants were clustered together with NAD atypical isolates from geographically diverse global locations. Compared with the Modesto reference strain AY498870, all the variants lacked a TTTTT stretch at positions 182-186 in the 16S rRNA gene and the same deletion was shown in most of the reported variants. The typical isolates and variants shared 97.3-98.2% and 95.2-97.2% nucleotide sequence similarity, for 16S rRNA and hagA, respectively. In addition, the similarities among variants were within 98.3-100% and 96.5-98.4% for the two genes, respectively. Our results indicate that the Av. paragallinarum variants with altered NAD growth requirements were genetically different and highly divergent from the typical NAD-dependent isolates.RESEARCH HIGHLIGHTS NAD variant Korean Av. paragallinarum isolates show genetic diversity, whereas typical Korean Av. paragallinarum isolates do not.The Korean variants were not closely aligned to all other Av. paragallinarum in the 16S rRNA phylogeny.NAD atypical isolates from geographically diverse global locations clustered together.Almost all variants, including all Korean variants of Av. paragallinarum, lack a specific fragment of the 16S rRNA gene.
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Affiliation(s)
- Ok-Mi Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Patrick J Blackall
- Queensland Alliance for Agriculture and Food Innovation, the University of Queensland, St Lucia, Australia
| | - Byung-Woo Jeon
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Jin-Hyun Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Jiyeon Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Dong-Wan Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Jae-Hong Kim
- College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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Kim HJ, Sung IY, Cho YC, Kang MS, Rho GJ, Byun JH, Park WU, Son MG, Park BW, Lee HJ, Kang YH. Three-Dimensional Spheroid Formation of Cryopreserved Human Dental Follicle-Derived Stem Cells Enhances Pluripotency and Osteogenic Induction Properties. Tissue Eng Regen Med 2019; 16:513-523. [PMID: 31624706 DOI: 10.1007/s13770-019-00203-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 02/07/2023] Open
Abstract
Background Enhancement and maintenance of the stemness of mesenchymal stem cells (MSCs) is one of the most important factors contributing to the successful in vivo therapeutic application of these cells. In this regard, three-dimensional (3D) spheroid formation has been developed as reliable method for increasing the pluripotency of MSCs. Moreover, using a new protocol, we have previously shown that dental tissues of extracted wisdom teeth can be effectively cryopreserved for subsequent use as a source of autologous stem cells. The main purpose of this study is to analyze the stemness and in vitro osteogenic differentiation potential of 3D spheroid dental MSCs compared with conventional mono-layer cultured MSCs. Methods In this study, MSC-characterized stem cells were isolated and cultured from long-term cryopreserved dental follicles (hDFSCs), and then 2D hDFSCs were cultured under 3D spheroid-forming conditions using a newly designed microchip dish. The spheroids (3D hDFSCs) thus produced were investigated and characterized with respect to stemness, MSC marker expression, apoptosis, cell cycle analysis, extracellular matrix (ECM) production, and osteogenic and adipogenic differentiation properties. Results In terms of MSC and senescence markers, spheroid cells showed no difference when compared with 2D hDFSCs; however, 3D hDFSCs were observed to have a higher proportion of cell cycle arrest and a larger number of apoptotic cells. Moreover, spheroids showed substantially increased levels of pluripotency marker (early transcription factors) and ECM protein expression. Compared with 2D hDFSCs, there was also a notable enhancement in the osteogenic induction potential of spheroids, although no differences were observed with respect to in vitro adipogenesis. Conclusion To the best of our knowledge, this is the first study to demonstrate the application of a spheroid culture system for dental follicle-derived stem cells using a microchip dish. Although further studies are needed, including in vivo transplantation, the results obtained in this study indicate that spheroid hDFSCs derived from cryopreserved dental follicle tissues could be used as a valuable source of autologous stem cells for bone tissue regeneration.
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Affiliation(s)
- Hyo-Jung Kim
- 1Department of Oral and Maxillofacial Surgery, College of Medicine, University of Ulsan, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033 Republic of Korea
| | - Iel-Yong Sung
- 1Department of Oral and Maxillofacial Surgery, College of Medicine, University of Ulsan, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033 Republic of Korea
| | - Yeong-Cheol Cho
- 1Department of Oral and Maxillofacial Surgery, College of Medicine, University of Ulsan, 877 Bangeojinsunhwando-ro, Dong-gu, Ulsan, 44033 Republic of Korea
| | - Min-Su Kang
- 2Department of Oral and Maxillofacial Surgery, Changwon Gyeongsang National University Hospital, 11 Samjeongja-ro, Seongsan-gu, Changwon, 51472 Republic of Korea
| | - Gyu-Jin Rho
- 3Department of Theriogenology and Biotechnology, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, 15 Jinju-daero 816 beon-gil, Jinju-si, Gyeongsangnam-do 52727 Republic of Korea
| | - June-Ho Byun
- 4Department of Dentistry, Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, 816-15 Republic of Korea
| | - Won-Uk Park
- Department of Dental Technology, Jinju Health College, Jinju, Republic of Korea
| | - Myeong-Gyun Son
- Department of Dentistry, Hanil Hospital, Jinju, Republic of Korea
| | - Bong-Wook Park
- Department of Dentistry, Hanil Hospital, Jinju, Republic of Korea
| | - Hyeon-Jeong Lee
- 3Department of Theriogenology and Biotechnology, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, 15 Jinju-daero 816 beon-gil, Jinju-si, Gyeongsangnam-do 52727 Republic of Korea
| | - Young-Hoon Kang
- 2Department of Oral and Maxillofacial Surgery, Changwon Gyeongsang National University Hospital, 11 Samjeongja-ro, Seongsan-gu, Changwon, 51472 Republic of Korea.,4Department of Dentistry, Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, 816-15 Republic of Korea
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Lim HY, Kim KN, Jun JH, Lee SW, Kang MS. Reporting of randomized controlled trials in International Journal of Obstetric Anesthesia. Int J Obstet Anesth 2019; 41:114-115. [PMID: 31204097 DOI: 10.1016/j.ijoa.2019.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 04/07/2019] [Accepted: 04/10/2019] [Indexed: 11/26/2022]
Affiliation(s)
- H Y Lim
- Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, College of Medicine, Seoul, Republic of Korea
| | - K N Kim
- Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, College of Medicine, Seoul, Republic of Korea.
| | - J H Jun
- Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, College of Medicine, Seoul, Republic of Korea
| | - S W Lee
- Department of Urology, Hanyang University Guri Hospital, College of Medicine, Seoul, Republic of Korea
| | - M S Kang
- Department of Anesthesiology and Pain Medicine, Hanyang University Hospital, College of Medicine, Seoul, Republic of Korea
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Lee HJ, Youn SY, Jeong OM, Kim JH, Kim DW, Jeong JY, Kwon YK, Kang MS. Sequential Transmission of Salmonella in the Slaughtering Process of Chicken in Korea. J Food Sci 2019; 84:871-876. [PMID: 30861135 DOI: 10.1111/1750-3841.14493] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 02/07/2019] [Accepted: 02/08/2019] [Indexed: 11/26/2022]
Abstract
Salmonella is one of the most common foodborne pathogens worldwide. Salmonella infections in humans are mainly associated with consumption of poultry products contaminated with this foodborne pathogen. Therefore, strict sanitary measures are necessary to control Salmonella contamination during the slaughtering process of poultry. The objective of this study was to determine the occurrence and transmission of Salmonella at a series of steps in the slaughtering process of chicken. A total of 601 samples were collected from a series of slaughtering steps (10 sampling sites) of 26 chicken slaughterhouses throughout Korea. Salmonella was isolated from samples and its distribution was analyzed along the slaughtering process. Isolates from each sampling site were tested for susceptibility to 15 antibiotics by the broth microdilution method. They were also genotypically characterized by pulsed-field gel electrophoresis (PFGE). Salmonela was isolated from 168 out of 601 samples. Sixteen serotypes were identified while six isolates were untypable. Salmonella enterica serovars Montevideo (n = 29) and Virchow (n = 27) were the most common serotypes out of 119 nonredundant isolates. Relatively high contamination rates of Salmonella were found in shackles (75.0%), feathers near plucking machine (68.5%), and feces from crates (44.0%). Twenty-three antibiotic resistance patterns were recognized and 40 (33.6%) isolates were resistant to five or more antibiotics. The same serotypes of Salmonella were distributed along the slaughtering process of each Salmonella-positive slaughterhouse. Most of those isolates belonging to the same serotype had identical or closely related PFGE profiles. They also shared common antibiotic resistance patterns. Overall findings of this study indicated that Salmonella were sequentially transmitted through the chicken slaughtering process. PRACTICAL APPLICATION: This study provides useful information on the distribution and transmission of Salmonella serotypes through the chicken slaughtering process. Overall findings indicated the need for routine microbiological monitoring along the slaughtering process. This study also showed that on-farm control of Salmonella is needed to obtain Salmonella-free chicken carcasses.
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Affiliation(s)
- Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - So-Youn Youn
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Ok-Mi Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Jin-Hyun Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Dong-Wan Kim
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Ji-Yeon Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
| | - Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do 39660, Korea
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Choi GE, Kang MS, Kim YJ, Yoon JJ, Jeong YI. Magnetically Responsive Drug Delivery Using Doxorubicin and Iron Oxide Nanoparticle-Incorporated Lipocomplexes. J Nanosci Nanotechnol 2019; 19:675-679. [PMID: 30360140 DOI: 10.1166/jnn.2019.15910] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bacterial iron oxide (IO) nanoparticles and doxorubicin (DOX) were complexed with lipid materials (magnetic lipocomplexes) for stimuli-sensitive drug targeting. DOX-incorporated magnetic lipocomplexes showed spherical core-shell structure with small diameter less than 300 nm, i.e., iron oxide nanoparticles were located in the inner-core of the lipocomplexes and these were surrounded by lipid bilayer. The complexe sizes were around 100 nm~300 nm while IO nanoparticle itself was smaller than 100 nm. DOX-incorporated magnetic lipocomplexes showed increased anticancer activity against CT26 mouse colorectal carcinoma cells. Stimulation with magnetic field resulted in higher cellular uptake ratio and suppression of cell growth. In vivo tumor imaging study using CT26-bearing tumor model proved that the magnet-sensitive delivery of DOX-incorporated magnetic lipocomplexes specifically suppressed the tumor growth. Magnetic lipocomplexes showed enhanced anticancer activity due to the magnet-sensitive drug delivery properties in vitro and in vivo.
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Affiliation(s)
- Go-Eun Choi
- Gwangju Science Academy, Gwangju 61005, Republic of Korea
| | - Min-Su Kang
- Gwangju Science Academy, Gwangju 61005, Republic of Korea
| | - Young-Jun Kim
- Gwangju Science Academy, Gwangju 61005, Republic of Korea
| | - Je Jung Yoon
- Jeonnam Bioindustry Foundation, Jeonnam 58275, Korea
| | - Young-Il Jeong
- Biomedical Research Institute, Pusan National University Hospital, Pusan 49241, Korea
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Abstract
Acute and chronic stress have dissociable effects on reward sensitivity, and a better understanding of these effects promises to elucidate the pathophysiology of stress-related disorders, particularly depression. Recent preclinical and human findings suggest that stress particularly affects reward anticipation; chronic stress perturbates dopamine signaling in the medial prefrontal cortex and ventral striatum; and such effects are further moderated by early adversities. Additionally, a systems-level approach is uncovering the interplay among striatal, limbic and control networks giving rise to stress-related, blunted reward sensitivity. Together, this cross-species confluence has not only enriched our understanding of stress-reward links but also highlighted the role of neuropeptides and opioid receptors in such effects, and thereby identified novel targets for stress-related neuropsychiatric disorders.
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Affiliation(s)
- Maria Ironside
- McLean Hospital, 115 Mill St, Belmont, MA 02476, USA Telephone: +1 800-333-0338; Fax: +1 617-855-4231
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115, USA
| | - Poornima Kumar
- McLean Hospital, 115 Mill St, Belmont, MA 02476, USA Telephone: +1 800-333-0338; Fax: +1 617-855-4231
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115, USA
| | - Min-Su Kang
- McLean Hospital, 115 Mill St, Belmont, MA 02476, USA Telephone: +1 800-333-0338; Fax: +1 617-855-4231
| | - Diego A. Pizzagalli
- McLean Hospital, 115 Mill St, Belmont, MA 02476, USA Telephone: +1 800-333-0338; Fax: +1 617-855-4231
- Harvard Medical School, 25 Shattuck St, Boston, MA 02115, USA
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Benedet AL, Mathotaarachchi S, Pascoal TA, Medina YI, Savard M, Therriault J, Kang MS, Chamoun M, Gauthier S, Evans AC, Labbe A, Rosa-Neto P. P1‐148: THE EFFECT OF PROTON PUMP INHIBITORS AND
CYP2C19
ON AMYLOID PATHOLOGY. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Andrea Lessa Benedet
- CAPES FoundationBrasiliaBrazil
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | | | | | | | | | - Joseph Therriault
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | - Min-Su Kang
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in AgingMcGill UniversityMontrealQCCanada
| | - Mira Chamoun
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | - Alan C. Evans
- McGill Centre for Integrative NeuroscienceMcGill UniversityMontrealQCCanada
| | | | - Pedro Rosa-Neto
- McGill University Research Centre for Studies in AgingVerdunQCCanada
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22
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Pascoal TA, Chamoun M, Benedet AL, Shin M, Mathotaarachchi S, Kang MS, Therriault J, Savard M, Thomas E, Massarweh G, Soucy JP, Gauthier S, Rosa-Neto P. P1‐482: ASSOCIATION OF [
18
F]MK6240 PET TAU BINDING WITH CLINICAL DIAGNOSIS, APOE4, COGNITION, AMYLOID, AGE, AND BRAAK STAGES ACROSS THE AD CLINICAL SPECTRUM. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Mira Chamoun
- Translational Neuroimaging Laboratory- McGill UniversityVerdunQCCanada
| | | | - Monica Shin
- Cerebral Imaging Centre - Douglas Research CentreVerdunQCCanada
| | | | - Min-Su Kang
- Translational Neuroimaging LaboratoryMcGill University Research Centre for Studies in Aging- McGill UniversityMontrealQCCanada
| | - Joseph Therriault
- Translational Neuroimaging Laboratory- McGill UniversityVerdunQCCanada
| | | | - Emilie Thomas
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | - Gassan Massarweh
- McConnell Brain Imaging Centre - McGill UniversityMontréalQCCanada
| | - Jean-Paul Soucy
- McConnell Brain Imaging Centre - McGill UniversityMontréalQCCanada
| | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQCCanada
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Benedet AL, Pascoal TA, Chamoun M, Savard M, Schoemaker D, Mathotaarachchi S, Kang MS, Therriault J, Collins L, Gauthier S, Poirier J, Labbe A, Rosa-Neto P. IC‐P‐064: THE IMPACT OF TSPO RS6971 POLYMORPHISM IN A CANADIAN NEUROIMAGING STUDY OF NEUROINFLAMMATION. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.2129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Andrea Lessa Benedet
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior FoundationBrasiliaBrazil
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | | | - Mira Chamoun
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | | | | | | | - Min-Su Kang
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in AgingMcGill UniversityMontrealQCCanada
| | - Joseph Therriault
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | | | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | - Judes Poirier
- Douglas Mental Health Research InstituteMontrealQCCanada
| | | | - Pedro Rosa-Neto
- McGill University Research Centre for Studies in Aging, CanadaVerdunQCCanada
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Benedet AL, Pascoal TA, Chamoun M, Savard M, Schoemaker D, Mathotaarachchi S, Kang MS, Therriault J, Collins L, Gauthier S, Poirier J, Labbe A, Rosa-Neto P. P2‐353: THE IMPACT OF TSPO RS6971 POLYMORPHISM IN A CANADIAN NEUROIMAGING STUDY OF NEUROINFLAMMATION. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.1044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Mira Chamoun
- Translational Neuroimaging Laboratory-McGill UniversityVerdunQCCanada
| | | | | | | | - Min-Su Kang
- Translational Neuroimaging LaboratoryMcGill University Research Centre for Studies in Aging- McGill UniversityMontrealQCCanada
| | - Joseph Therriault
- Translational Neuroimaging Laboratory-McGill UniversityVerdunQCCanada
| | | | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | - Judes Poirier
- Douglas Mental Health Research InstituteMontrealQCCanada
| | | | - Pedro Rosa-Neto
- McGill University Research Centre for Studies in Aging, CanadaVerdunQCCanada
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25
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Benedet AL, Mathotaarachchi S, Pascoal TA, Medina YI, Savard M, Therriault J, Kang MS, Chamoun M, Gauthier S, Evans AC, Labbe A, Rosa-Neto P. IC‐P‐063: THE EFFECT OF PROTON PUMP INHIBITORS AND CYP2C19 ON AMYLOID PATHOLOGY. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.2128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Andrea Lessa Benedet
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior FoundationBrasiliaBrazil
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | | | | | | | | | - Joseph Therriault
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | - Min-Su Kang
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in AgingMcGill UniversityMontrealQCCanada
| | - Mira Chamoun
- Translational Neuroimaging LaboratoryMcGill UniversityVerdunQCCanada
| | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQCCanada
| | - Alan C. Evans
- McGill Centre for Integrative NeuroscienceMcGill UniversityMontrealQCCanada
| | | | - Pedro Rosa-Neto
- McGill University Research Centre for Studies in Aging, CanadaVerdunQCCanada
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26
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Benedet AL, Yu L, Labbe A, Mathotaarachchi S, Pascoal TA, Shin M, Kang MS, Gauthier S, Rouleau GA, Poirier J, Bennett DA, Rosa-Neto P. CYP2C19 variant mitigates Alzheimer disease pathophysiology in vivo and postmortem. Neurol Genet 2018; 4:e216. [PMID: 29473050 PMCID: PMC5820598 DOI: 10.1212/nxg.0000000000000216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 12/04/2017] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To verify whether CYP polymorphisms are associated with amyloid-β (Aβ) pathology across the spectrum of clinical Alzheimer disease using in vivo and postmortem data from 2 independent cohorts. METHODS A candidate-gene approach tested the association between 5 genes (28 single nucleotide polymorphisms) and Aβ load measured in vivo by the global [18F]florbetapir PET standardized uptake value ratio (SUVR) in 338 Alzheimer's Disease Neuroimaging Initiative participants. Significant results were then tested using plasma Aβ and CSF Aβ and Aβ/phosphorylated tau (Aβ/p-tau) ratio in the same cohort. The significant association was also generalized to postmortem Aβ load measurement in the Rush Religious Orders Study/Memory and Aging Project cohorts. In addition, global cognition was used as a phenotype in the analysis in both cohorts. RESULTS Analysis of Aβ PET identified a variant in the CYP2C19 gene (rs4388808; p = 0.0006), in which carriers of the minor allele (MA) had a lower global SUVR. A voxel-wise analysis revealed that the variant is associated with a lower Aβ load in the frontal, inferior temporal, and posterior cingulate cortices. MA carriers also had higher CSF Aβ (p = 0.003) and Aβ/p-tau ratio (p = 0.02) but had no association with Aβ plasma levels. In postmortem brains, MA carriers had a lower Aβ load (p = 0.03). Global cognition was higher in MA carriers, which was found to be mediated by Aβ. CONCLUSIONS Together, these findings point to an association between CYP2C19 polymorphism and Aβ pathology, suggesting a protective effect of the MA of rs4388808. Despite the several possibilities in which CYP2C19 affects brain Aβ, the biological mechanism by which this genetic variation may act as a protective factor merits further investigation.
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Affiliation(s)
- Andréa L Benedet
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Lei Yu
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Aurélie Labbe
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Sulantha Mathotaarachchi
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Tharick A Pascoal
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Monica Shin
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Min-Su Kang
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Serge Gauthier
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Guy A Rouleau
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Judes Poirier
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - David A Bennett
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
| | - Pedro Rosa-Neto
- Translational Neuroimaging Laboratory (A.L.B., S.M., T.A.P., M.S., M.-S.K., P.R.-N.), and Alzheimer's Disease Research Unit (S.G., P.R.-N.), McGill University Research Centre for Studies in Aging, Montreal, Canada; CAPES Foundation (A.L.B.), Ministry of Education of Brazil, Brasília, Brazil; Rush Alzheimer's Disease Center (L.Y., D.A.B.), Rush University Medical Center, Chicago, IL; Department of Decision Sciences (A.L.), HEC Montreal, Montreal, Canada; Department of Epidemiology (A.L.), Biostatistics & Occupational Health, McGill University, Montreal, Canada; Department of Neurology and Neurosurgery (G.A.R., J.P., P.R.-N.), Douglas Hospital Research Centre (J.P., P.R.-N.), and Department of Psychiatry (J.P.), McGill University, Montreal, Canada; and Montreal Neurological Institute (G.A.R., P.R.-N.), Canada
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Kim KM, Han OJ, Kang MS, Huh JY. HLA-A*02:687, a novel allele identified by sequence-based typing in cord blood from a Korean woman. HLA 2017; 90:246-247. [PMID: 28686327 DOI: 10.1111/tan.13088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 06/28/2017] [Accepted: 06/28/2017] [Indexed: 11/29/2022]
Abstract
A*02:687 showed one nucleotide difference with A*02:01:01:01 resulting in an amino acid change.
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Affiliation(s)
- K M Kim
- Department of Laboratory Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - O J Han
- Department of Laboratory Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - M S Kang
- Department of Laboratory Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - J Y Huh
- Department of Laboratory Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
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28
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Kwon YK, Oh JY, Jeong OM, Moon OK, Kang MS, Jung BY, An BK, Youn SY, Kim HR, Jang I, Lee HS. Prevalence of Campylobacter species in wild birds of South Korea. Avian Pathol 2017; 46:474-480. [DOI: 10.1080/03079457.2017.1315048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yong-Kuk Kwon
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Jae-Young Oh
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Ok-Mi Jeong
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Oun-Kyoung Moon
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Min-Su Kang
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Byeong-Yeal Jung
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Byung-Ki An
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - So-Youn Youn
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Hye-Ryoung Kim
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Il Jang
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
| | - Hee-Soo Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, Gimcheon-si, Republic of Korea
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29
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Lee EK, Song BM, Lee YN, Heo GB, Bae YC, Joh SJ, Park SC, Choi KS, Lee HJ, Jang I, Kang MS, Jeong OM, Choi BK, Lee SM, Jeong SC, Park BK, Lee HS, Lee YJ. Multiple novel H5N6 highly pathogenic avian influenza viruses, South Korea, 2016. Infect Genet Evol 2017; 51:21-23. [PMID: 28284997 DOI: 10.1016/j.meegid.2017.03.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/01/2017] [Accepted: 03/07/2017] [Indexed: 11/18/2022]
Abstract
We report the identification of novel highly pathogenic avian influenza viruses of subtype H5N6, clade 2.3.4.4, that presumably originated from China. In addition, reassortant strains with Eurasian lineage low pathogenic avian influenza viruses were isolated in wild birds and poultry in South Korea. The emergence of these novel H5N6 viruses and their circulation among bird populations are of great concern because of the potential for virus dissemination with intercontinental wild bird migration.
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Affiliation(s)
- Eun-Kyoung Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Byung-Min Song
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Yu-Na Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Gyeong-Beom Heo
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - You-Chan Bae
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Sung-Joon Joh
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Seok-Chan Park
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Kang-Seuk Choi
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Hyun-Jeong Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Il Jang
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Min-Su Kang
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Ok-Mi Jeong
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Byung-Kook Choi
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Sang-Man Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Suk Chan Jeong
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Bong-Kyun Park
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Hee-Soo Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea
| | - Youn-Jeong Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 177, Hyeoksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Republic of Korea.
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Kang MS, Oh JY, Kwon YK, Lee DY, Jeong OM, Choi BK, Youn SY, Jeon BW, Lee HJ, Lee HS. Public health significance of major genotypes of Salmonella enterica serovar Enteritidis present in both human and chicken isolates in Korea. Res Vet Sci 2017; 112:125-131. [PMID: 28242576 DOI: 10.1016/j.rvsc.2017.02.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 02/03/2017] [Accepted: 02/15/2017] [Indexed: 11/17/2022]
Abstract
Salmonella enterica serovar Enteritidis is one of the most common serotypes implicated in Salmonella infections in both humans and poultry worldwide. It has been reported that human salmonellosis is mainly associated with the consumption of poultry products contaminated with serovar Enteritidis. The present study was to extensively analyze the public health risk of serovar Enteritidis isolates from chickens in Korea. A total of 127 chicken isolates were collected from clinical cases, on-farm feces, and chicken meat between 1998 and 2012 and 20 human clinical isolates were obtained from patients with diarrhea between 2000 and 2006 in Korea. To characterize the isolates from chickens and humans, we compared the pulsed-field gel electrophoresis (PFGE) patterns and multilocus variable-number tandem-repeat analysis (MLVA) profiles of the isolates. We further characterized representative isolates of different genotypes using a DNA microarray. PFGE revealed 28 patterns and MLVA identified 16 allelic profiles. The DNA microarray showed high genetic variability in plasmid regions and other fimbrial subunits of the isolates although the virulence gene contents of isolates from the same source and/or of the same genotype were unrelated. PFGE and MLVA showed that major genotypes were present in both human and chicken isolates. This result suggests that chickens in Korea pose a significant risk to public health as a source of serovar Enteritidis as has been noted in other countries.
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Affiliation(s)
- Min-Su Kang
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea.
| | - Jae-Young Oh
- Department of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, Republic of Korea
| | - Yong-Kuk Kwon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Deog-Yong Lee
- Division of Enteric Diseases, Center for Infectious Diseases, National Research Institute of Health, Cheongju, Republic of Korea
| | - Ok-Mi Jeong
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Byung-Kook Choi
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - So-Youn Youn
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Byung-Woo Jeon
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Hye-Jin Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
| | - Hee-Soo Lee
- Animal and Plant Quarantine Agency, Gimcheon-si, Gyeongsangbuk-do, Republic of Korea
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31
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Roh IJ, Lee YG, Kang MS, Lee JU, Baek SH, Kim SK, Ju BK, Hyun DB, Kim JS, Kwon B. Harman Measurements for Thermoelectric Materials and Modules under Non-Adiabatic Conditions. Sci Rep 2016; 6:39131. [PMID: 27966622 PMCID: PMC5155428 DOI: 10.1038/srep39131] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 11/17/2016] [Indexed: 11/28/2022] Open
Abstract
Accuracy of the Harman measurement largely depends on the heat transfer between the sample and its surroundings, so-called parasitic thermal effects (PTEs). Similar to the material evaluations, measuring thermoelectric modules (TEMs) is also affected by the PTEs especially when measuring under atmospheric condition. Here, we study the correction methods for the Harman measurements with systematically varied samples (both bulk materials and TEMs) at various conditions. Among several PTEs, the heat transfer via electric wires is critical. Thus, we estimate the thermal conductance of the electric wires, and correct the measured properties for a certain sample shape and measuring temperature. The PTEs are responsible for the underestimation of the TEM properties especially under atmospheric conditions (10–35%). This study will be useful to accurately characterize the thermoelectric properties of materials and modules.
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Affiliation(s)
- Im-Jun Roh
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Yun Goo Lee
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.,Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Min-Su Kang
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.,Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jae-Uk Lee
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Seung-Hyub Baek
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.,Department of Nanomaterials Science and Technology, Korea University of Science and Technology, Daejeon, 34113, Republic of Korea
| | - Seong Keun Kim
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Byeong-Kwon Ju
- Display and Nanosystem Laboratory, College of Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Dow-Bin Hyun
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jin-Sang Kim
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Beomjin Kwon
- Center for Electronic Materials, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
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Pollock BH, Elmore S, Romoser A, Tang L, Kang MS, Xue K, Rodriguez M, Dierschke NA, Hayes HG, Hansen HA, Guerra F, Wang JS, Phillips T. Intervention trial with calcium montmorillonite clay in a south Texas population exposed to aflatoxin. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2016; 33:1346-54. [PMID: 27321368 DOI: 10.1080/19440049.2016.1198498] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
South Texas currently has the highest incidence of hepatocellular carcinoma (HCC) in the United States, a disease that disproportionately affects Latino populations in the region. Aflatoxin B1 (AFB1) is a potent liver carcinogen that has been shown to be present in a variety of foods in the United States, including corn and corn products. Importantly, it is a dietary risk factor contributing to a higher incidence of HCC in populations frequently consuming AFB1-contaminated diets. In a randomised double-blind placebo controlled trial, we evaluated the effects of a 3-month administration of ACCS100 (refined calcium montmorillonite clay) on serum AFB1-lysine adduct (AFB-Lys) level and serum biochemistry in 234 healthy men and women residing in Bexar and Medina counties, Texas. Participants recruited from 2012 to 2014 received either a placebo, 1.5 g or 3 g ACCS100 each day for 3 months, and no treatment during the fourth month. Adverse event rates were similar across treatment groups and no significant differences were observed for serum biochemistry and haematology parameters. Differences in levels of AFB-Lys at 1, 3 and 4 months were compared between placebo and active treatment groups. Although serum AFB-Lys levels were decreased by month 3 for both treatment groups, the low dose was the only treatment that was significant (p = 0.0005). In conclusion, the observed effect in the low-dose treatment group suggests that the use of ACCS100 may be a viable strategy to reduce dietary AFB1 bioavailability during aflatoxin outbreaks and potentially in populations chronically exposed to this carcinogen.
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Affiliation(s)
- Brad H Pollock
- a Department of Public Health Sciences , University of California , Davis , CA , USA.,b Department of Epidemiology and Biostatistics , University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Sarah Elmore
- c Interdisciplinary Faculty of Toxicology , Texas A&M University , College Station , TX , USA
| | - Amelia Romoser
- c Interdisciplinary Faculty of Toxicology , Texas A&M University , College Station , TX , USA
| | - Lili Tang
- d Department of Environmental Health Science, College of Public Health , University of Georgia , Athens , GA , USA
| | - Min-Su Kang
- d Department of Environmental Health Science, College of Public Health , University of Georgia , Athens , GA , USA
| | - Kathy Xue
- d Department of Environmental Health Science, College of Public Health , University of Georgia , Athens , GA , USA
| | - Marisa Rodriguez
- b Department of Epidemiology and Biostatistics , University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Nicole A Dierschke
- b Department of Epidemiology and Biostatistics , University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Holly G Hayes
- e Arnold School of Public Health , University of South Carolina , Columbia , SC , USA
| | - H Andrew Hansen
- f Department of Clinical Surgery , Texas A&M Health Sciences Center , College Station , TX , USA
| | - Fernando Guerra
- b Department of Epidemiology and Biostatistics , University of Texas Health Science Center at San Antonio , San Antonio , TX , USA
| | - Jia-Sheng Wang
- d Department of Environmental Health Science, College of Public Health , University of Georgia , Athens , GA , USA
| | - Timothy Phillips
- c Interdisciplinary Faculty of Toxicology , Texas A&M University , College Station , TX , USA
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Benedet AL, Yu L, Labbe A, Mathotaarachchi SS, Shin M, Pascoal TA, Kang MS, Beaudry T, Gauthier S, Bennett DA, Rosa-Neto P. P2‐093: Polymorphism in Cytochrome P450 Gene is Associated with Alzheimer’s Pathology. Alzheimers Dement 2016. [DOI: 10.1016/j.jalz.2016.06.1298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Andrea Lessa Benedet
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in AgingMontrealQC Canada
| | - Lei Yu
- Rush University Medical CenterChicagoIL USA
| | | | | | - Monica Shin
- McGill University Research Centre for Studies in AgingVerdunQC Canada
- Translational Neuroimaging Laboratory-McGill UniversityVerdunQC Canada
| | | | - Min-Su Kang
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in Aging-McGill UniversityMontrealQC Canada
| | | | - Serge Gauthier
- McGill University Research Centre for Studies in AgingVerdunQC Canada
| | | | - Pedro Rosa-Neto
- McGill University Research Centre for Studies in AgingVerdunQC Canada
- Translational Neuroimaging Laboratory-McGill UniversityVerdunQC Canada
- Douglas Hospital Research CentreVerdunQC Canada
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Liu L, Zhang YD, Li HY, Bi YQ, Yu LJ, Fan XM, Tan J, Jeffers DP, Kang MS. QTL Mapping for Gray Leaf Spot Resistance in a Tropical Maize Population. Plant Dis 2016; 100:304-312. [PMID: 30694127 DOI: 10.1094/pdis-08-14-0825-re] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A tropical gray leaf spot (GLS)-resistant line, YML 32, was crossed to a temperate GLS-susceptible line, Ye 478, to produce an F2:3 population for the identification of quantitative trait loci (QTL) associated with resistance to GLS. The population was evaluated for GLS disease resistance and flowering time at two locations in Yunnan province. Seven QTL using GLS disease scores and six QTL using flowering time were identified on chromosomes 2, 3, 4, 5, and 8 in the YML 32 × Ye 478 maize population. All QTL, except one identified on chromosome 2 using flowering time, were overlapped with the QTL for GLS disease scores. The results indicated that QTL for flowering time in this population strongly corresponded to QTL for GLS resistance. Among the QTL, qRgls.yaas-8-1/qFt.yaas-8 with the largest genetic effect accounted for 17.9 to 18.1 and 11.0 to 21.42% of variations for GLS disease scores and flowering time, respectively, and these should be very useful for improving resistance to GLS, especially in subtropical maize breeding programs. The QTL effects for resistance to GLS were predominantly additive in nature, with a dominance effect having been found for two QTL on the basis of joint segregation genetic analysis and QTL analysis.
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Affiliation(s)
- L Liu
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - Y D Zhang
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - H Y Li
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - Y Q Bi
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - L J Yu
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - X M Fan
- Institute of Food Crops, Yunnan Academy of Agricultural Sciences/Yunnan TianRui Seed Company, Ltd., Kunming 650200, Yunnan Province, China
| | - J Tan
- School of Agriculture, Yunnan University, Kunming 650091, Yunnan Province, China
| | - D P Jeffers
- CIMMYT Yunnan Office/Institute of Food Crops, Yunnan Academy of Agricultural Sciences, Kunming 650200, Yunnan Province, China
| | - M S Kang
- Department of Plant Pathology, Kansas State University, Manhattan KS 66506-5502
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Son YH, Baik SK, Kang MS, Kim YD. Recurrent arteriovenous malformation on palate after embolization combined surgical resection: preoperative magnetic resonance features and intraoperative angiographic findings. J Korean Assoc Oral Maxillofac Surg 2016; 41:346-51. [PMID: 26734564 PMCID: PMC4699938 DOI: 10.5125/jkaoms.2015.41.6.346] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/06/2015] [Accepted: 10/19/2015] [Indexed: 11/07/2022] Open
Abstract
Angiography is the gold standard for the diagnosis and complete resection of arteriovenous malformations (AVMs). The absence of residual AVM after surgery is commonly believed to reduce the risk of future hemorrhage. However, AVMs can recur after proven complete angiographic resection can occur, albeit rarely, especially in the pediatric population. We report a rare case of a recurrent AVM two years after complete resection in an adult patient. This case report shows that AVMs in adults can recur despite their rarity and despite postoperative angiography confirming complete removal. Moreover, in this case, the recurrent AVM involved a new feeding vessel that was not involved with the initial lesion.
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Affiliation(s)
- Yong-Hyun Son
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Seung-Kug Baik
- Department of Radiology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Min-Su Kang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea
| | - Yong-Deok Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea
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36
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Park SJ, Oh SH, Kang MS, Kim TH, Kang SW, Yoon YC, Kim YH. Reuse of a previously transplanted kidney from a deceased donor using Luminex virtual crossmatching: a case report. Transplant Proc 2015; 46:2083-5. [PMID: 25131112 DOI: 10.1016/j.transproceed.2014.06.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Kidney transplantation is the most desired modality of renal replacement therapy for patients with end-stage renal disease (ESRD). We have attempted to expand the organ donor pool through several methods, including the use of expanded donor criteria. Although previously transplanted kidneys are rarely reused, they can be suitable for transplantation into patients in need. We report a case of successful reuse of a previously transplanted kidney from a deceased donor by means of Luminex virtual crossmatching with the first donor and actual crossmatching with the second donor.
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Affiliation(s)
- S J Park
- Organ Transplantation Center, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea; Department of Nephrology, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - S H Oh
- Department of Laboratory Medicine, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - M S Kang
- Department of Pathology, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - T H Kim
- Department of Nephrology, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - S W Kang
- Department of Nephrology, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - Y C Yoon
- Organ Transplantation Center, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea; Department of Cardiovascular Surgery, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea
| | - Y H Kim
- Organ Transplantation Center, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea; Department of Nephrology, College of Medicine, Busan Paik Hospital, Inje University, Busan, Republic of Korea.
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Kang MS, Nkurunziza P, Muwanika R, Qian G, Tang L, Song X, Xue K, Nkwata A, Ssempebwa J, Lutalo T, Asiki G, Serwadda D, Seeley J, Kaleebu P, Nalugoda F, Newton R, William JH, Wang JS. Longitudinal evaluation of aflatoxin exposure in two cohorts in south-western Uganda. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2015. [PMID: 26208708 DOI: 10.1080/19440049.2015.1048749] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Aflatoxins (AF) are a group of mycotoxins. AF exposure causes acute and chronic adverse health effects such as aflatoxicosis and hepatocellular carcinoma in human populations, especially in the developing world. In this study, AF exposure was evaluated using archived serum samples from human immunodeficiency virus (HIV)-seronegative participants from two cohort studies in south-western Uganda. AFB1-lysine (AFB-Lys) adduct levels were determined via HPLC fluorescence in a total of 713 serum samples from the General Population Cohort (GPC), covering eight time periods between 1989 and 2010. Overall, 90% (642/713) of the samples were positive for AFB-Lys and the median level was 1.58 pg mg(-1) albumin (range = 0.40-168 pg mg(-1) albumin). AFB-Lys adduct levels were also measured in a total of 374 serum samples from the Rakai Community Cohort Study (RCCS), across four time periods between 1999 and 2003. The averaged detection rate was 92.5% (346/374) and the median level was 1.18 pg mg(-1) albumin (range = 0.40-122.5 pg mg(-1) albumin). In the GPC study there were no statistically significant differences between demographic parameters, such as age, sex and level of education, and levels of serum AFB-Lys adduct. In the RCCS study, longitudinal analysis using generalised estimating equations revealed significant differences between the adduct levels and residential areas (p = 0.05) and occupations (p = 0.02). This study indicates that AF exposure in people in two populations in south-western Uganda is persistent and has not significantly changed over time. Data from one study, but not the other, indicated that agriculture workers and rural area residents had more AF exposure than those non-agricultural workers and non-rural area residents. These results suggest the need for further study of AF-induced human adverse health effects, especially the predominant diseases in the region.
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Affiliation(s)
- Min-Su Kang
- a College of Public Health and Peanut CRSP , University of Georgia , Athens , GA , USA
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Oh JY, Kwon YK, Tamang MD, Jang HK, Jeong OM, Lee HS, Kang MS. Plasmid-Mediated Quinolone Resistance in Escherichia coli Isolates from Wild Birds and Chickens in South Korea. Microb Drug Resist 2015. [PMID: 26207437 DOI: 10.1089/mdr.2015.0090] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A total of 2,423 nonduplicate isolates of Escherichia coli recovered from wild birds (n=793) and chickens (n=1,630) in South Korea were investigated for plasmid-mediated quinolone resistance (PMQR) genes. Altogether, 56 isolates with PMQR genes were identified, including 25 (3.2%) from wild birds and 31 (1.9%) from chickens, which were further characterized using molecular methods. Among them, qnrS, aac(6')-Ib-cr, qnrB, and qepA genes were detected in 47 (1.9%), 6 (0.24%), 2 (0.08%), and 1 (0.04%) isolates, respectively. The most prevalent gene, qnrS, was identified in 21 (0.9%) and 26 (1.1%) isolates from wild birds and chickens, respectively. The qnrB gene was identified in two chicken isolates, which included qnrB19 and a novel qnrB44 gene. Plasmid isolation and Southern hybridization revealed that qnrS1 was located on a large (>200 kbp) plasmid. The spread of the PMQR genes was attributed to a combination of horizontal dissemination and clonal expansion. The horizontal dissemination of PMQR genes was mostly mediated by IncK plasmids. Molecular typing demonstrated that the majority of the PMQR-positive isolates were genetically diverse. Only one chicken isolate belonged to ST131, which harbored an additional CMY-2 gene. Our findings suggest that the wild birds could serve as reservoirs of PMQR genes and spread them over long distances through migration. To our knowledge, this is the first report of PMQR genes in Korean wild birds. This study also reports qnrS2, qnrB19, qnrB44, and qepA genes for the first time in animal E. coli isolates from South Korea.
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Affiliation(s)
- Jae-Young Oh
- 1 Department of Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University , Iksan, South Korea
| | - Yong-Kuk Kwon
- 2 Avian Disease Division, Animal and Plant Quarantine Agency , Anyang, South Korea
| | - Migma Dorji Tamang
- 3 Bacterial Disease Division, Animal and Plant Quarantine Agency , Anyang, South Korea
| | - Hyung-Kwan Jang
- 1 Department of Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University , Iksan, South Korea
| | - Ok-Mi Jeong
- 2 Avian Disease Division, Animal and Plant Quarantine Agency , Anyang, South Korea
| | - Hee-Soo Lee
- 2 Avian Disease Division, Animal and Plant Quarantine Agency , Anyang, South Korea
| | - Min-Su Kang
- 2 Avian Disease Division, Animal and Plant Quarantine Agency , Anyang, South Korea
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Im MC, Jeong SJ, Kwon YK, Jeong OM, Kang MS, Lee YJ. Prevalence and characteristics of Salmonella spp. isolated from commercial layer farms in Korea. Poult Sci 2015; 94:1691-8. [DOI: 10.3382/ps/pev137] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2015] [Indexed: 11/20/2022] Open
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40
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Shin M, Parent MJ, Fonov VS, Kang M, Mathieu A, Allard S, Carmo SD, Gauthier S, Cuello AC, Rosa-Neto P. P1‐036: Dynamics of longitudinal biomarker changes in the Mcgill‐R‐Thy1‐APP rat. Alzheimers Dement 2015. [DOI: 10.1016/j.jalz.2015.06.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Monica Shin
- McGill Centre for Studies in AgingMontrealQCCanada
- Translational Imaging LaboratoryVerdunQCCanada
| | - Maxime J. Parent
- Translational Imaging LaboratoryVerdunQCCanada
- McGill Centre for Studies in AgingVerdunQCCanada
| | | | - MinSu Kang
- Translational Imaging LaboratoryVerdunQCCanada
- McGill Centre for Studies in AgingVerdunQCCanada
| | - Axel Mathieu
- Brain Imaging Centre- Douglas Research CentreVerdunQCCanada
| | | | | | | | | | - Pedro Rosa-Neto
- McGill Centre for Studies in AgingMontrealQCCanada
- Translational Imaging LaboratoryMontrealQCCanada
- Douglas Hospital Research CentreMontrealQCCanada
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41
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Shin M, Parent MJ, Fonov VS, Kang M, Mathieu A, Allard S, Carmo SD, Gauthier S, Cuello AC, Rosa-Neto P. IC‐P‐027: Dynamics of longitudinal biomarker changes in the Mcgill‐R‐Thy1‐APP RAT. Alzheimers Dement 2015. [DOI: 10.1016/j.jalz.2015.06.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Monica Shin
- Translational Imaging LaboratoryVerdunQCCanada
- McGill Centre for Studies in AgingMontrealQCCanada
| | - Maxime J. Parent
- Translational Imaging LaboratoryVerdunQCCanada
- McGill Centre for Studies in AgingVerdunQCCanada
| | | | - MinSu Kang
- Translational Imaging LaboratoryVerdunQCCanada
- McGill Centre for Studies in AgingVerdunQCCanada
| | - Axel Mathieu
- Brain Imaging Centre- Douglas Research CentreVerdunQCCanada
| | | | | | | | | | - Pedro Rosa-Neto
- McGill Centre for Studies in AgingMontrealQCCanada
- Centre for Studies on Prevention of Alzheimer's Disease (StoP‐AD Centre)Douglas Mental Health InstituteMontrealQCCanada
- Douglas Hospital Research CentreMontrealQCCanada
- Translational Imaging LaboratoryMontrealQCCanada
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Lee YJ, Kang HM, Lee EK, Song BM, Jeong J, Kwon YK, Kim HR, Lee KJ, Hong MS, Jang I, Choi KS, Kim JY, Lee HJ, Kang MS, Jeong OM, Baek JH, Joo YS, Park YH, Lee HS. Novel reassortant influenza A(H5N8) viruses, South Korea, 2014. Emerg Infect Dis 2015; 20:1087-9. [PMID: 24856098 PMCID: PMC4036756 DOI: 10.3201/eid2006.140233] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Tamang MD, Gurung M, Kang MS, Nam HM, Moon DC, Jang GC, Jung SC, Park YH, Lim SK. Characterization of plasmids encoding CTX-M β-lactamase and their addiction systems in Escherichia coli isolates from animals. Vet Microbiol 2014; 174:456-462. [DOI: 10.1016/j.vetmic.2014.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/16/2014] [Accepted: 10/01/2014] [Indexed: 11/29/2022]
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Jang I, Kang MS, Kim HR, Oh JY, Lee JI, Lee HS, Kwon YK. Occurrence of Avian Botulism in Korea During the Period from June to September 2012. Avian Dis 2014; 58:666-9. [DOI: 10.1637/10793-020414-case] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Song EY, Huh JY, Kim SY, Kim TG, Oh S, Yoon JH, Roh EY, Park MH, Kang MS, Shin S. Estimation of size of cord blood inventory based on high-resolution typing of HLAs. Bone Marrow Transplant 2014; 49:977-9. [PMID: 24777194 DOI: 10.1038/bmt.2014.76] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/05/2014] [Accepted: 03/04/2014] [Indexed: 11/09/2022]
Abstract
Methods for estimating the cord blood (CB) inventory size required vary according to the ethnic diversity of the HLA, degree of HLA matching and HLA-typing resolution. We estimated the CB inventory size required using 7190 stored CB units (CBU) and 2450 patients who were awaiting or underwent allogeneic hematopoietic stem cell transplantation. With high-resolution typing of HLA-A, B and DRB1, 94.6% of Korean patients could find CBUs in 100 000 CBUs with a 5/6 match, and 95.7% could find CBUs in 5000 CBUs with a 4/6 match. With low-resolution typing of HLA-A and B and high-resolution typing of leukocyte antigen-DRB1, 95% of patients could find CBUs in 50 000 CBUs with a 5/6 match, and 96.7% could find CBUs in 3000 CBUs with a 4/6 match. With additional high-resolution typing for HLA-A and B, which could improve transplantation outcome, the size of the CB inventory would need to increase twofold for Koreans.
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Affiliation(s)
- E Y Song
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - J Y Huh
- CHA Bundang Medical Center, Department of Laboratory Medicine, CHA University, Seongnam, Korea
| | - S Y Kim
- Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - T G Kim
- Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S Oh
- Department of Biostatistics, Boramae Hospital, Seoul, Korea
| | - J H Yoon
- 1] Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea [2] Department of Laboratory Medicine, Boramae Hospital, Seoul, Korea [3] Seoul Metropolitan Government Public Cord Blood Bank (Allcord), Seoul, Korea
| | - E Y Roh
- 1] Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea [2] Department of Laboratory Medicine, Boramae Hospital, Seoul, Korea [3] Seoul Metropolitan Government Public Cord Blood Bank (Allcord), Seoul, Korea
| | - M H Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - M S Kang
- 1] CHA Bundang Medical Center, Department of Laboratory Medicine, CHA University, Seongnam, Korea [2] CHA Medical Center Cord Blood Bank, Seongnam, Korea
| | - S Shin
- 1] Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea [2] Department of Laboratory Medicine, Boramae Hospital, Seoul, Korea [3] Seoul Metropolitan Government Public Cord Blood Bank (Allcord), Seoul, Korea
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Park PG, Choi GJ, Kim WJ, Yang SY, Shin HY, Kang H, Baek CW, Jung YH, Kim JY, Kang MS. A comparative study among normal saline, water soluble gel and 2% lidocaine gel as a SLIPA lubricant. Korean J Anesthesiol 2014; 66:105-11. [PMID: 24624267 PMCID: PMC3948436 DOI: 10.4097/kjae.2014.66.2.105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 08/20/2013] [Accepted: 08/20/2013] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND This study was designed to find appropriate lubricant for streamed lined liner of pharyngeal airway™ (SLIPA™). We evaluated the incidence of sore throat, nausea, vomiting, hoarseness, paresthesia and blood stain after using saline, water soluble gel and 2% lidocaine gel as a SLIPA™ lublicant. METHODS One hundred twenty three patients scheduled for minor surgery to whom the SLIPA™ was considered suitable were randomly allocated to one of three groups which receive normal saline, water soluble gel or 2% lidocaine gel as a SLIPA™ lublicant. Patients were interviewed at recovery room, post operation 6-12 hour, post operation 18-24 hour about sore throat and other complications. RESULTS There were no statistical difference in sore throat and blood stain among three groups. Also there were no statistical differences in hoarseness, nausea, vomiting. The incidence of paresthesia in 2% lidocaine gel group was significantly higher than those of the other two groups immediately after operation, but it was resolved after leaving the recovery room. CONCLUSIONS Our results suggest that normal saline, water soluble gel and 2% lidocaine gel are all available as a SLIPA™ lubricant. Size of SLIPA™, insertion technique and difficulty of insertion should be further investigated as the main causes of a sore throat and other complications which can occur after the insertion of SLIPA™.
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Affiliation(s)
- Pyung-Gul Park
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Geun Joo Choi
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Won Joong Kim
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - So-Young Yang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Hwa-Yong Shin
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Hyun Kang
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Chong Wha Baek
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Yong Hun Jung
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Jin-Yun Kim
- Department of Anesthesiology and Pain Medicine, Chung-Ang University College of Medicne, Seoul, Korea
| | - Min-Su Kang
- Department of Anesthesiology and Pain Medicine, National Police Hospital, Seoul, Korea
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Mohd Redzwan S, Rosita J, Mohd Sokhini AM, Nurul 'Aqilah AR, Wang JS, Kang MS, Zuraini A. Detection of serum AFB1-lysine adduct in Malaysia and its association with liver and kidney functions. Int J Hyg Environ Health 2013; 217:443-51. [PMID: 24095591 DOI: 10.1016/j.ijheh.2013.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 08/24/2013] [Accepted: 08/25/2013] [Indexed: 12/20/2022]
Abstract
Aflatoxin is ubiquitously found in many foodstuffs and produced by Aspergillus species of fungi. Of many aflatoxin metabolites, AFB1 is classified by the International Agency for Research on Cancer (IARC) as group one carcinogen and linked to the development of hepatocellular carcinoma (HCC). The study on molecular biomarker of aflatoxin provides a better assessment on the extent of human exposure to aflatoxin. In Malaysia, the occurrences of aflatoxin-contaminated foods have been documented, but there is a lack of data on human exposure to aflatoxin. Hence, this study investigated the occurrence of AFB1-lysine adduct in serum samples and its association with liver and kidney functions. 5ml fasting blood samples were collected from seventy-one subjects (n=71) for the measurement of AFB1-lysine adduct, albumin, total bilirubin, AST (aspartate aminotransferase), ALT (alanine transaminase), ALP (alkaline phosphatase), GGT (gamma-glutamyl transpeptidase), creatinine and BUN (blood urea nitrogen). The AFB1-lysine adduct was detected in all serum samples (100% detection rate) with a mean of 6.85±3.20pg/mg albumin (range: 1.13-18.85pg/mg albumin). Male subjects (mean: 8.03±3.41pg/mg albumin) had significantly higher adduct levels than female subjects (mean: 5.64±2.46pg/mg albumin) (p<0.01). It was noteworthy that subjects with adduct levels greater than average (>6.85pg/mg albumin) had significantly elevated level of total bilirubin (p<0.01), GGT (p<0.05) and creatinine (p<0.01). Nevertheless, only the level of total bilirubin, (r=0.347, p-value=0.003) and creatinine (r=0.318, p-value=0.007) showed significant and positive correlation with the level of AFB1-lysine adduct. This study provides a valuable insight on human exposure to aflatoxin in Malaysia. Given that aflatoxin can pose serious problem to the health, intervention strategies should be implemented to limit/reduce human exposure to aflatoxin. Besides, a study with a big sample size should be warranted in order to assess aflatoxin exposure in the general population of Malaysia.
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Affiliation(s)
- S Mohd Redzwan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Jamaluddin Rosita
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
| | - A M Mohd Sokhini
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - A R Nurul 'Aqilah
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Jia-Sheng Wang
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens 30602, GA, USA
| | - Min-Su Kang
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens 30602, GA, USA
| | - Ahmad Zuraini
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Kim HR, Kang MS, Kim MJ, Lee HS, Kwon YK. Restriction fragment length polymorphism analysis of multiple genome regions of Korean isolates of infectious laryngotracheitis virus collected from chickens. Poult Sci 2013; 92:2053-8. [DOI: 10.3382/ps.2013-03134] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Affiliation(s)
- Sung Bae Jeon
- Department of Anesthesiology and Pain Medicine, National Police Hospital, Seoul, Korea
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Affiliation(s)
- Jong In Oh
- Department of Anesthesiology and Pain Medicine, National Police Hospital, Seoul, Korea
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